Merge branch 'release/0.2.0'

.dockerignore

@@ -0,0 +1,10 @@
+.git/
+.idea/
+
+dist/
+example/
+
+Dockerfile
+.dockerignore
+.gitignore
+.drone.yml

.drone.yml

@@ -3,6 +3,14 @@ kind: pipeline
 name: default
 
 steps:
+- name: pytest
+  image: python:3.6-alpine3.13
+  commands:
+    - apk add --no-cache g++ libffi-dev
+    - wget -O- https://raw.githubusercontent.com/python-poetry/poetry/master/install-poetry.py | python3 -
+    - /root/.local/bin/poetry install
+    - /root/.local/bin/poetry run pytest
+
 - name: docker
   image: plugins/docker
   settings:

.gitignore

@@ -1 +1,3 @@
 __pycache__/
+htmlcov/
+.coverage

.idea/kiwi-scp.iml

@@ -4,6 +4,8 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
       <excludeFolder url="file://$MODULE_DIR$/src/venv" />
+      <excludeFolder url="file://$MODULE_DIR$/htmlcov" />
+      <excludePattern pattern=".coverage" />
     </content>
     <orderEntry type="jdk" jdkName="Poetry (kiwi-scp)" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />

.idea/runConfigurations/Test_Coverage.xml

@@ -0,0 +1,18 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="Test Coverage" type="tests" factoryName="py.test">
+    <module name="kiwi-scp" />
+    <option name="INTERPRETER_OPTIONS" value="" />
+    <option name="PARENT_ENVS" value="true" />
+    <option name="SDK_HOME" value="" />
+    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
+    <option name="IS_MODULE_SDK" value="true" />
+    <option name="ADD_CONTENT_ROOTS" value="true" />
+    <option name="ADD_SOURCE_ROOTS" value="true" />
+    <option name="_new_keywords" value="&quot;&quot;" />
+    <option name="_new_parameters" value="&quot;&quot;" />
+    <option name="_new_additionalArguments" value="&quot;--cov\u003dkiwi_scp --cov-report\u003dhtml&quot;" />
+    <option name="_new_target" value="&quot;tests&quot;" />
+    <option name="_new_targetType" value="&quot;PYTHON&quot;" />
+    <method v="2" />
+  </configuration>
+</component>

.idea/runConfigurations/Tests__Debuggable_.xml

@@ -0,0 +1,18 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="Tests (Debuggable)" type="tests" factoryName="py.test">
+    <module name="kiwi-scp" />
+    <option name="INTERPRETER_OPTIONS" value="" />
+    <option name="PARENT_ENVS" value="true" />
+    <option name="SDK_HOME" value="" />
+    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
+    <option name="IS_MODULE_SDK" value="true" />
+    <option name="ADD_CONTENT_ROOTS" value="true" />
+    <option name="ADD_SOURCE_ROOTS" value="true" />
+    <option name="_new_keywords" value="&quot;&quot;" />
+    <option name="_new_parameters" value="&quot;&quot;" />
+    <option name="_new_additionalArguments" value="&quot;&quot;" />
+    <option name="_new_target" value="&quot;tests&quot;" />
+    <option name="_new_targetType" value="&quot;PYTHON&quot;" />
+    <method v="2" />
+  </configuration>
+</component>

.idea/runConfigurations/kiwi.xml

@@ -0,0 +1,23 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="kiwi" type="PythonConfigurationType" factoryName="Python">
+    <module name="kiwi-scp" />
+    <option name="INTERPRETER_OPTIONS" value="" />
+    <option name="PARENT_ENVS" value="true" />
+    <envs>
+      <env name="PYTHONUNBUFFERED" value="1" />
+    </envs>
+    <option name="SDK_HOME" value="" />
+    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/example" />
+    <option name="IS_MODULE_SDK" value="true" />
+    <option name="ADD_CONTENT_ROOTS" value="true" />
+    <option name="ADD_SOURCE_ROOTS" value="true" />
+    <option name="SCRIPT_NAME" value="kiwi_scp.scripts.kiwi" />
+    <option name="PARAMETERS" value="-v shell hello-world.project greeter" />
+    <option name="SHOW_COMMAND_LINE" value="false" />
+    <option name="EMULATE_TERMINAL" value="false" />
+    <option name="MODULE_MODE" value="true" />
+    <option name="REDIRECT_INPUT" value="false" />
+    <option name="INPUT_FILE" value="" />
+    <method v="2" />
+  </configuration>
+</component>

Dockerfile

@@ -12,6 +12,6 @@ RUN set -ex; \
 COPY . /usr/src/kiwi_scp
 
 RUN set -ex; \
-    pip3 --use-feature=in-tree-build install /usr/src/kiwi_scp
+    pip3 --no-cache-dir --use-feature=in-tree-build install /usr/src/kiwi_scp
 
 ENTRYPOINT ["kiwi"]

README.md

@@ -10,7 +10,7 @@ The simple tool for managing container servers
 ## Quick start
 
 - Learn to use `docker` with `docker-compose`
-- Install kiwi-scp
+- Install `kiwi-scp`
 - Look at [the example instance](./example)
 - Look at the output of `kiwi --help`
 - Start building your own instances
@@ -18,24 +18,24 @@ The simple tool for managing container servers
 
 ## Installation
 
-A convenience installer is available as [install.sh](./install.sh) in this directory.
+A convenience installer is available as [install.sh](./dist/install.sh) in the `dist` directory.
 You can `curl | sh` it using the following one-liner.
 
 ```shell script
-curl --proto '=https' --tlsv1.2 -sSf 'https://raw.githubusercontent.com/ldericher/kiwi-scp/master/install.sh' | sh
+curl --proto '=https' --tlsv1.2 -sSf 'https://raw.githubusercontent.com/ldericher/kiwi-scp/master/dist/install.sh' | sh
 ```
 
 The installer downloads the `kiwi` launcher script and installs it to a location of your choice.
 Please consider installing into a directory inside your `$PATH`.
-Run in a root shell or use `sudo sh` instead for system-wide installation.
+Run in a root shell or use `sudo sh` at the end instead for system-wide installation.
 
-You should now be able to run `kiwi init --show` and see the default configuration file.
-This downloads the latest version of the main kiwi-scp executable and sets it up for you.
+You should then be able to run `kiwi list --show` and see the default configuration file.
+This installs the latest version of the kiwi-scp package and sets it up for you.
 
 
 ### Adjusting environment for `kiwi`
 
-The `kiwi` executable depends on [Python](https://www.python.org/) 3.6 (or later) and 
+The `kiwi` executable depends on [Python](https://www.python.org/) 3.6.1 (or later) and 
 [less](http://www.greenwoodsoftware.com/less/) being in your `$PATH`.
 
 In some cases, notably when using a multi-version system such as
@@ -44,8 +44,7 @@ at login time.
 
 In those cases, you can simply create a `.kiwi_profile` file in your home directory.
 It will be sourced every time you use the `kiwi` command.
-For the aforementioned case where you installed `centos-release-scl` and `rh-python36`, your `~/.kiwi_profile` should
-contain:
+For the aforementioned case where you installed `centos-release-scl` and `rh-python36`, your `~/.kiwi_profile` should contain:
 
 ```shell script
 #!/bin/sh
@@ -59,8 +58,7 @@ contain:
 ### Create a kiwi-scp instance
 
 Any directory is implicitly a valid kiwi-scp instance using the default configuration.
-To prevent surprises however, you should run `kiwi init` in an empty directory and follow its directions to
-create a `kiwi.yml` before using `kiwi` more.
+To prevent surprises however, you should run `kiwi init` and follow its directions to create a `kiwi.yml` for your instance before using `kiwi` more.
 
 
 ### Concept
@@ -69,11 +67,11 @@ A kiwi-scp instance is a directory containing a bunch of static configuration fi
 "Static" there as in "those don't change during normal service operation".
 These files  could be anything from actual `.conf` files to entire html-web-roots.
 
-Non-static, but persistent files are to be kept in a "service data directory", by default `/var/kiwi`.
-In your `docker-compose.yml` files, you can refer to that directory as **${TARGETROOT}**.
+Non-static, persistent files are to be kept in a "service data storage", by default the directory `/var/local/kiwi`.
+In your `docker-compose.yml` files, you can refer to that directory as **${KIWI_INSTANCE}**.
 
-Start the current directory as a kiwi-scp instance using `kiwi up`, or stop it using `kiwi down`.
-This also creates kiwi's internal hub network, which you can use as **kiwi_hub** in your `docker-compose.yml` files.
+Start the current kiwi-scp instance using `kiwi up`, or stop it using `kiwi down`.
+This also manages kiwi's internal hub network, which you can use as **kiwi_hub** in your `docker-compose.yml` files.
 
 
 ### Projects
@@ -88,7 +86,7 @@ Before enabling or starting, consider editing the new project's `docker-compose.
 Finally, enable it with `kiwi enable <project-name>`.
 You can also create, enable or (analogously) disable multiple projects in a single command.
 
-Each project will have its own place in the service data directory, which you can refer to as **${TARGETDIR}**.
+Each project will have its own place in the service data directory, which you can refer to as **${KIWI_PROJECT}**.
 
 Finally, start a project using `kiwi up <project-name>`.
 
@@ -100,7 +98,7 @@ kiwi-scp extends the logical bounds of `docker-compose` to handling multiple pro
 
 #### The `kiwi_hub`
 
-With kiwi-scp, you get the internal kiwi_hub network for free.
+With kiwi-scp, you get the internal `kiwi_hub` network for free.
 It allows for network communication between services in different projects.
 Be aware, services only connected to the kiwi_hub can't use a port mapping!
 In most cases, you will want to use this:
@@ -112,25 +110,23 @@ networks:
 ```
 
 
-#### The `CONFDIR`
+#### The `KIWI_CONFIG` 
 
 Sometimes, it's convenient to re-use configuration files across projects.
-For this use case, create a directory named `conf` in a project.
-Those will all be combined into a directory available as **${CONFDIR}** in your `docker-compose.yml` files.
+For this use case, create a directory named `config` in your instance.
+In your `docker-compose.yml` files, you can refer to that directory as **${KIWI_CONFIG}**.
 
 
 #### `kiwi.yml` options
 
 ##### `version`
 Version of kiwi-scp to use for this instance.
-Default: Latest version.
 
-##### `runtime:storage`
-Path of the service data directory, available as **${TARGETROOT}** in projects.  
-Default: `/var/kiwi`
+Default: Version of [`master` branch](https://github.com/ldericher/kiwi-scp/tree/master).
+
+##### `shells`
+Sequence of additionally preferable shell executables when entering service containers.
 
-##### `runtime:shells`
-List of additionally preferable shell executables when entering service containers.  
 Default: `- /bin/bash`  
 Example:
 
@@ -141,17 +137,74 @@ runtime:
     - /bin/fish
 ```
 
-##### `runtime:env`
-Associative array of custom variables available in projects' `docker-compose.yml` files.   
-Default: `null`  
+##### `projects`
+Sequence of project definitions in this instance.
+
+###### Project definition
+Defining a project in this instance. Any subdirectory with a `docker-compose.yml` should be considered a project. The directory name is equivalent to the project name.
+
+Format[^1]: Mapping using the keys `name` (required), `enabled` and `override_storage`
 Example:
 
 ```yaml
-runtime:
-  env:
+- name: "hello_world"
+  enabled: true
+```
+
+##### `environment`
+Custom variables available in projects' `docker-compose.yml` files.
+
+Format[^1]: Mapping of `KEY: "value"` pairs  
+Example:
+
+```yaml
+environment:
   HELLO: "World"
   FOO: "Bar"
 ```
 
-#### For everything else, look at `kiwi --help`
-#### Happy kiwi-ing!
+##### `storage`
+Configuration for the service data storage.
+
+Format: Mapping using the key `directory`  
+Example:
+
+```yaml
+storage:
+  directory: "/var/local/kiwi"
+```
+
+###### `storage:directory`
+Path to the local service data directory, the only currently supported service data storage. 
+Available as **${KIWI_INSTANCE}** in projects.
+
+Default: `"/var/local/kiwi"`
+
+
+##### `network`
+Configuration for the internal `kiwi_hub` network.
+
+Format: Mapping using the keys `name` and `cidr`
+Example:
+
+```yaml
+network:
+  name: "kiwi_hub"
+  cidr: "10.22.46.0/24"
+```
+
+###### `network:name`
+Configuration for the internal `kiwi_hub` network.
+
+Default: `"kiwi_hub"`
+
+###### `network:cidr`
+[CIDR notation](https://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing#IPv4_CIDR_blocks) for the subnet of the internal `kiwi_hub` network.
+
+Default: `"10.22.46.0/24"`
+
+<font size="5">**For everything else, look at `kiwi --help`**
+
+**Happy kiwi-ing!**</font>
+
+[^1]: This is the officially correct format. For enabling varying conventions, there are multiple accepted formats. Start trying and check with `kiwi list --show` -- if it makes sense, it will likely just work.

bump-version.sh

@@ -1,12 +0,0 @@
-#!/bin/bash
-
-this="$(readlink -f "${0}")"
-this_dir="$(dirname "${this}")"
-
-git_branch="$(git rev-parse --abbrev-ref HEAD)"
-git_tag="$(git describe --abbrev=0)"
-version_str="${git_branch##*/}"
-
-echo "${version_str}" > "${this_dir}/kiwi_scp/data/etc/version_tag"
-sed -ri "s/(version\s*:).*$/\1 '${version_str}'/" "${this_dir}/example/kiwi.yml"
-sed -ri "s/(version\s*=\s*).*$/\1\"${version_str}\"/" "${this_dir}/pyproject.toml"

dist/bump-version.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+this="$(readlink -f "${0}")"
+this_dir="$(dirname "${this}")"
+
+git_branch="$(git rev-parse --abbrev-ref HEAD)"
+# git_tag="$(git describe --abbrev=0)"
+version_str="${git_branch##*/}"
+# version_str="0.2.0"
+
+sed -ri "s/(version\s*:).*$/\1 ${version_str}/" "${this_dir}/../example/kiwi.yml"
+sed -ri "s/(version\s*=\s*).*$/\1\"${version_str}\"/" "${this_dir}/../pyproject.toml"
+sed -ri "s/(version.*=\s*).*$/\1\"${version_str}\"/" "${this_dir}/../kiwi_scp/config.py"

dist/kiwi

@@ -156,12 +156,20 @@ if [ "${run_kiwi_check}" = "yes" ]; then
   chmod 0777 "${CANARY_FILENAME}"
 fi
 
-# check if pwd is a kiwi folder
-if [ -f "./${KIWI_CONF_NAME}" ]; then
+# check if pwd is a kiwi instance
+path="$(pwd)"
+while [ "${path}" != "" ]; do
+  if [ -e "${path}/${KIWI_CONF_NAME}" ]; then
+    # cd into kiwi instance
+    cd "${path}" || yes_no "Could not enter kiwi instance at '${path}'. Continue anyway?" || exit 1
+
     # determine needed kiwi-scp version
     re_version_line='version\s*:\s*'
     eval "$(grep -E "${re_version_line}" "./${KIWI_CONF_NAME}" | sed -r "s/${re_version_line}/KIWI_VERSION=/")"
+    break;
   fi
+  path="${path%/*}"
+done
 
 # install if kiwi-scp not found
 if [ ! -x "$(kiwi_executable)" ]; then

example/hello_world/docker-compose.yml

@@ -10,20 +10,20 @@ networks:
       name: ${KIWI_HUB_NAME}
 
 services:
-  # simple loop producing (rather boring) logs
   greeter:
+    # simple loop producing (rather boring) logs
     image: alpine:latest
     command: sh -c 'LOOP=1; while :; do echo Hello World "$$LOOP"; LOOP=$$(($$LOOP + 1)); sleep 10; done'
 
-  # basic webserver listening on localhost:8080
   web:
+    # basic webserver listening on localhost:8080
     build: web
     restart: unless-stopped
     ports:
       - "8080:80"
 
-  # internal mariadb (mysql) instance with persistent storage
   db:
+    # internal mariadb (mysql) instance with persistent storage
     image: mariadb:10
     restart: unless-stopped
     networks:
@@ -31,10 +31,10 @@ services:
     environment:
       MYSQL_ROOT_PASSWORD: changeme
     volumes:
-      - "${TARGETDIR}/db:/var/lib/mysql"
+      - "${KIWI_PROJECT}/db:/var/lib/mysql"
 
-  # admin interface for databases
   adminer:
+    # admin interface for databases
     image: adminer:standalone
     restart: unless-stopped
     networks:
@@ -45,11 +45,11 @@ services:
     ports:
       - "8081:8080"
 
-  # Another webserver just to show off the ${CONFDIR} variable
   another-web:
+    # Another webserver just to show off the ${KIWI_CONFIG} variable
     image: nginx:stable-alpine
     restart: unless-stopped
     ports:
       - "8082:80"
     volumes:
-      - "${CONFDIR}/html/index.html:/usr/share/nginx/html/index.html:ro"
+      - "${KIWI_CONFIG}/html/index.html:/usr/share/nginx/html/index.html:ro"

example/kiwi.yml

@@ -2,17 +2,17 @@
 # kiwi-scp instance configuration #
 ###################################
 
-version: '0.1.7'
+version: 0.2.0
 
-runtime:
-  storage: /tmp/kiwi
 shells:
   - /bin/bash
-  env: null
 
-markers:
-  project: .project
-  disabled: .disabled
+projects:
+  - name: hello_world
+    enabled: true
+
+storage:
+  directory: /var/local/kiwi
 
 network:
   name: kiwi_hub

kiwi_scp/__init__.py

@@ -1,20 +0,0 @@
-# local
-from .parser import Parser
-from .runner import Runner
-
-
-def verbosity():
-    # ensure singleton is instantiated: runs subcommand setup routines
-    _ = Runner()
-    return Parser().get_args().verbosity
-
-
-def run():
-    # pass down
-    return Runner().run()
-
-
-__all__ = [
-    'verbosity',
-    'run'
-]

kiwi_scp/_constants.py

@@ -1,13 +1,26 @@
-# system
 import os
 
+#############
+# REGEX PARTS
+
+# regex part for a number with no leading zeroes
+_RE_NUMBER: str = r"(?:0|[1-9][0-9]*)"
+
+# regex for a semantic version string
+RE_SEMVER = rf"^{_RE_NUMBER}(?:\.{_RE_NUMBER}(?:\.{_RE_NUMBER})?)?$"
+
+# regex for a variable name
+RE_VARNAME = r"^[A-Za-z](?:[A-Za-z0-9\._-]*[A-Za-z0-9])$"
+
 #############
 # ENVIRONMENT
 
 # location of "kiwi_scp" module
 KIWI_ROOT = os.path.dirname(__file__)
 # default name of kiwi-scp file
-KIWI_CONF_NAME = os.getenv('KIWI_CONF_NAME', "kiwi.yml")
+KIWI_CONF_NAME = os.getenv("KIWI_CONF_NAME", "kiwi.yml")
+# default name of compose files
+COMPOSE_FILE_NAME = "docker-compose.yml"
 
 ############
 # FILE NAMES
@@ -15,19 +28,22 @@ KIWI_CONF_NAME = os.getenv('KIWI_CONF_NAME', "kiwi.yml")
 # text files inside kiwi-scp "src" directory
 HEADER_KIWI_CONF_NAME = f"{KIWI_ROOT}/data/etc/kiwi_header.yml"
 DEFAULT_KIWI_CONF_NAME = f"{KIWI_ROOT}/data/etc/kiwi_default.yml"
-VERSION_TAG_NAME = f"{KIWI_ROOT}/data/etc/version_tag"
 DEFAULT_DOCKER_COMPOSE_NAME = f"{KIWI_ROOT}/data/etc/docker-compose_default.yml"
-KIWI_HELP_TEXT_NAME = f"{KIWI_ROOT}/data/etc/kiwi_help.txt"
-COMMAND_HELP_TEXT_NAME = f"{KIWI_ROOT}/data/etc/command_help.txt"
 
-# special config directory in projects
-CONF_DIRECTORY_NAME = 'conf'
+# special config directory
+CONFIG_DIRECTORY_NAME = "config"
+
 # location for auxiliary Dockerfiles
 IMAGES_DIRECTORY_NAME = f"{KIWI_ROOT}/data/images"
 
+# prohibited project names
+RESERVED_PROJECT_NAMES = [
+    CONFIG_DIRECTORY_NAME,
+]
+
 ####################
 # DOCKER IMAGE NAMES
 
 # name for auxiliary docker images
-LOCAL_IMAGES_NAME = 'localhost/kiwi-scp/auxiliary'
-DEFAULT_IMAGE_NAME = 'alpine:latest'
+LOCAL_IMAGES_NAME = "localhost/kiwi-scp/auxiliary"
+DEFAULT_IMAGE_NAME = "alpine:latest"

kiwi_scp/commands/__init__.py

@@ -0,0 +1,3 @@
+from .cli import KiwiCLI
+
+__all__ = ["KiwiCLI"]

kiwi_scp/commands/cli.py

@@ -0,0 +1,95 @@
+import importlib
+import os
+from gettext import gettext as _
+from typing import List, Optional
+
+import click
+
+
+class MissingCMDObjectError(ValueError):
+    """raised if command object can't be found in its module"""
+    pass
+
+
+class CMDObjectSubclassError(TypeError):
+    """raised if a command object is not inheriting click.Command"""
+    pass
+
+
+class CMDUnregisteredError(ValueError):
+    """raised if commands have not been assigned to a command group"""
+
+    unregistered: List[str]
+
+    def __init__(self, unregistered):
+        self.unregistered = unregistered
+
+        super().__init__(f"Some commands were not registered in a group above: {unregistered!r}")
+
+
+class KiwiCLI(click.MultiCommand):
+    """Command Line Interface spread over multiple files in this directory"""
+
+    def list_commands(self, ctx: click.Context) -> List[str]:
+        """list all the commands defined by cmd_*.py files in this directory"""
+
+        return [
+            filename[4:-3]
+            for filename in os.listdir(os.path.abspath(os.path.dirname(__file__)))
+            if filename.startswith("cmd_") and filename.endswith(".py")
+        ]
+
+    def get_command(self, ctx: click.Context, cmd_name: str) -> Optional[click.Command]:
+        """import and return a specific command"""
+
+        try:
+            cmd_module = importlib.import_module(f"kiwi_scp.commands.cmd_{cmd_name}")
+
+        except ImportError:
+            return
+
+        cmd_object_name = f"{cmd_name.capitalize()}Command"
+
+        if cmd_object_name in dir(cmd_module):
+            cmd_object = getattr(cmd_module, cmd_object_name)
+
+            if isinstance(cmd_object, click.Command):
+                return cmd_object
+
+            else:
+                raise CMDObjectSubclassError()
+
+        else:
+            raise MissingCMDObjectError()
+
+    def format_commands(self, ctx: click.Context, formatter: click.HelpFormatter) -> None:
+        commands = {
+            "Operation": [
+                "up", "down", "restart", "update",
+            ],
+            "Instance Management": [
+                "init", "list",
+            ],
+            "Project and Service Management": [
+                "new", "enable", "disable", "logs", "shell", "cmd",
+            ],
+            "Image Handling": [
+                "build", "pull", "push",
+            ],
+        }
+
+        # allow for 3 times the default spacing
+        cmd_names = set(self.list_commands(ctx))
+        limit = formatter.width - 6 - max(len(cmd_name) for cmd_name in cmd_names)
+
+        for purpose, cmd_list in commands.items():
+            with formatter.section(_(f"Commands for {purpose}")):
+                formatter.write_dl([
+                    (cmd_name, self.get_command(ctx, cmd_name).get_short_help_str(limit))
+                    for cmd_name in cmd_list
+                ])
+
+            cmd_names -= set(cmd_list)
+
+        if len(cmd_names) > 0:
+            raise CMDUnregisteredError(cmd_names)

kiwi_scp/commands/cmd.py

@@ -0,0 +1,184 @@
+import logging
+import sys
+from enum import Enum, auto
+from typing import TypeVar, Iterable, Type, Optional, List
+
+import click
+
+from ..instance import Instance
+from ..project import Project
+from ..services import Services
+from ..wstring import WParagraph, WAlignment
+
+_logger = logging.getLogger(__name__)
+
+
+class KiwiCommandType(Enum):
+    INSTANCE = auto()
+    PROJECT = auto()
+    PROJECTS = auto()
+    SERVICES = auto()
+
+
+T = TypeVar("T")
+
+
+class KiwiCommandNotImplementedError(Exception):
+    pass
+
+
+class KiwiCommand:
+    type: KiwiCommandType = KiwiCommandType.SERVICES
+    enabled_only: bool = False
+
+    @staticmethod
+    def print_header(header: str) -> None:
+        click.secho(header, fg="green", bold=True)
+
+    @staticmethod
+    def print_error(error: str) -> None:
+        click.secho(error, file=sys.stderr, fg="red", bold=True)
+
+    @staticmethod
+    def print_list(content: Iterable[str]) -> None:
+        for item in content:
+            click.echo(click.style("  - ", fg="green") + click.style(item, fg="blue"))
+
+    @staticmethod
+    def user_query(description: str, default: T, cast_to: Type[T] = str) -> T:
+        # prompt user as per argument
+        while True:
+            try:
+                prompt = \
+                    click.style(f"Enter {description} [", fg="green") + \
+                    click.style(default, fg="blue") + \
+                    click.style("] ", fg="green")
+                str_value = input(prompt).strip()
+                if str_value:
+                    return cast_to(str_value)
+                else:
+                    return default
+
+            except EOFError:
+                click.echo("Input aborted.")
+                return default
+
+            except Exception as e:
+                click.echo(f"Invalid input: {e}")
+
+    @staticmethod
+    def danger_confirm(*prompt_lines: str, default: Optional[bool] = None) -> bool:
+        if default is True:
+            suffix = "[YES|no]"
+            default_answer = "yes"
+
+        elif default is False:
+            suffix = "[yes|NO]"
+            default_answer = "no"
+
+        else:
+            suffix = "[yes|no]"
+            default_answer = None
+
+        dumb = WParagraph.from_strings(
+            click.style("WARNING", bold=True, underline=True, blink=True, fg="red"),
+            click.style("ここにゴミ", fg="cyan"),
+            click.style("を捨てないで下さい", fg="cyan"),
+            click.style("DO NOT DUMB HERE", fg="yellow"),
+            click.style("NO DUMB AREA", fg="yellow"),
+        ).align(WAlignment.CENTER).surround("!")
+
+        prompt = WParagraph.from_strings(*prompt_lines).align(WAlignment.LEFT).emphasize(3)
+
+        answer = input(
+            f"{dumb}\n\n"
+            f"{prompt}\n\n"
+            f"Are you sure you want to proceed? {suffix}: "
+        ).strip().lower()
+
+        if not answer:
+            answer = default_answer
+
+        while answer not in ["yes", "no"]:
+            answer = input("Please type 'yes' or 'no' explicitly: ").strip().lower()
+
+        return answer == "yes"
+
+    @classmethod
+    def run(cls, instance: Instance, project_names: List[str], service_names: List[str], **kwargs) -> None:
+
+        _logger.debug(f"{instance.directory!r}: {project_names!r}, {service_names!r}")
+
+        projects = instance.get_projects(project_names)
+
+        if not projects:
+            # run for whole instance
+            _logger.debug(f"running for instance, kwargs={kwargs}")
+            cls.run_for_instance(instance, **kwargs)
+
+        elif not service_names:
+            # run for entire project(s)
+            for project_name, project in projects.items():
+                if project is None:
+                    _logger.debug(f"running for new project {project_name}, kwargs={kwargs}")
+                    cls.run_for_new_project(instance, project_name, **kwargs)
+
+                else:
+                    if cls.enabled_only and not project.config.enabled:
+                        cls.print_error(f"Can't interact with disabled project {project_name}!")
+                        return
+
+                    _logger.debug(f"running for project {project.name}, kwargs={kwargs}")
+                    cls.run_for_project(instance, project, **kwargs)
+
+        else:
+            # run for some services
+            project_name = list(projects)[0]
+            project = projects[project_name]
+
+            if project is None:
+                cls.print_error(f"Project '{project_name}' not in kiwi-scp instance at '{instance.directory}'!")
+
+            else:
+                if cls.enabled_only and not project.config.enabled:
+                    cls.print_error(f"Can't interact with disabled project {project_name}!")
+                    return
+
+                _logger.debug(f"running for services {service_names} in project {project_name}, kwargs={kwargs}")
+                cls.run_for_services(instance, project, service_names, **kwargs)
+
+    @classmethod
+    def run_for_instance(cls, instance: Instance, **kwargs) -> None:
+        for project in instance.projects:
+            if cls.enabled_only and not project.config.enabled:
+                cls.print_header(f"Skipping disabled project {project.name}")
+                continue
+
+            cls.run_for_project(instance, project, **kwargs)
+
+    @classmethod
+    def run_for_project(cls, instance: Instance, project: Project, **kwargs) -> None:
+        service_names = [service.name for service in project.services.content]
+        cls.run_for_services(instance, project, service_names, **kwargs)
+
+    @classmethod
+    def run_for_new_project(cls, instance: Instance, project_name: str, **kwargs) -> None:
+        cls.print_error(f"Project '{project_name}' not in kiwi-scp instance at '{instance.directory}'!")
+
+    @classmethod
+    def run_for_services(cls, instance: Instance, project: Project, service_names: List[str], **kwargs) -> None:
+        services = project.services.filter_existing(service_names)
+
+        new_service_names = [
+            service_name
+            for service_name
+            in service_names
+            if service_name not in list(services.names)
+        ]
+
+        cls.run_for_filtered_services(instance, project, services, new_service_names, **kwargs)
+
+    @classmethod
+    def run_for_filtered_services(cls, instance: Instance, project: Project, services: Services,
+                                  new_service_names: List[str], **kwargs) -> None:
+        raise KiwiCommandNotImplementedError()

kiwi_scp/commands/cmd_build.py

@@ -0,0 +1,21 @@
+from typing import List
+
+from .cmd import KiwiCommandType, KiwiCommand
+from .decorators import kiwi_command
+from ..executable import COMPOSE_EXE
+from ..instance import Instance
+from ..project import Project
+
+
+@kiwi_command(
+    short_help="Build docker images",
+)
+class BuildCommand(KiwiCommand):
+    """Build images for the whole instance, a project or service(s) inside a project"""
+
+    type = KiwiCommandType.SERVICES
+    enabled_only = True
+
+    @classmethod
+    def run_for_services(cls, instance: Instance, project: Project, service_names: List[str], **kwargs) -> None:
+        COMPOSE_EXE.run(["build", "--pull", *service_names], **project.process_kwargs)

kiwi_scp/commands/cmd_cmd.py

@@ -0,0 +1,36 @@
+from typing import Tuple
+
+import click
+
+from .cmd import KiwiCommandType, KiwiCommand
+from .decorators import kiwi_command
+from ..executable import COMPOSE_EXE
+from ..instance import Instance
+from ..project import Project
+
+
+@click.argument(
+    "compose_args",
+    metavar="[ARG]...",
+    nargs=-1,
+)
+@click.argument(
+    "compose_cmd",
+    metavar="COMMAND",
+)
+@kiwi_command(
+    short_help="Run docker-compose command",
+    # ignore arguments looking like options
+    # just pass everything down to docker-compose
+    context_settings={"ignore_unknown_options": True},
+)
+class CmdCommand(KiwiCommand):
+    """Run raw docker-compose command in a project"""
+
+    type = KiwiCommandType.PROJECT
+    enabled_only = True
+
+    @classmethod
+    def run_for_project(cls, instance: Instance, project: Project, compose_cmd: str = None,
+                        compose_args: Tuple[str] = None) -> None:
+        COMPOSE_EXE.run([compose_cmd, *compose_args], **project.process_kwargs)

kiwi_scp/commands/cmd_disable.py

@@ -0,0 +1,40 @@
+import click
+
+from .cmd import KiwiCommandType, KiwiCommand
+from .decorators import kiwi_command
+from .._constants import KIWI_CONF_NAME
+from ..instance import Instance
+from ..project import Project
+
+
+@click.option(
+    "-f/-F",
+    "--force/--no-force",
+    help=f"skip confirmation",
+)
+@kiwi_command()
+class DisableCommand(KiwiCommand):
+    """Disable project(s)"""
+
+    type = KiwiCommandType.PROJECTS
+
+    @classmethod
+    def run_for_instance(cls, instance: Instance, force: bool = None) -> None:
+        if not force:
+            if not KiwiCommand.danger_confirm("This will disable all projects in this instance."):
+                return
+
+        super().run_for_instance(instance)
+
+    @classmethod
+    def run_for_project(cls, instance: Instance, project: Project, **kwargs) -> None:
+        if not project.config.enabled:
+            KiwiCommand.print_error(f"Project {project.name} is already disabled!")
+            return
+
+        project.config.enabled = False
+        KiwiCommand.print_header(f"Project {project.name} disabled")
+
+        # write out the new kiwi.yml
+        with open(instance.directory.joinpath(KIWI_CONF_NAME), "w") as file:
+            instance.config.dump_kiwi_yml(file)

kiwi_scp/commands/cmd_down.py

@@ -0,0 +1,57 @@
+from typing import List
+
+import click
+
+from .cmd import KiwiCommandType, KiwiCommand
+from .decorators import kiwi_command
+from ..executable import COMPOSE_EXE
+from ..instance import Instance
+from ..project import Project
+from ..services import Services
+
+
+@click.option(
+    "-f/-F",
+    "--force/--no-force",
+    help=f"skip confirmation",
+)
+@kiwi_command(
+    short_help="Bring down kiwi services",
+)
+class DownCommand(KiwiCommand):
+    """Bring down the whole instance, a project or service(s) inside a project"""
+
+    type = KiwiCommandType.SERVICES
+    enabled_only = True
+
+    @classmethod
+    def run_for_instance(cls, instance: Instance, force: bool = None) -> None:
+        if not force:
+            if not KiwiCommand.danger_confirm(
+                    "This will bring down the entire instance.",
+                    "",
+                    "This may not be what you intended, because:",
+                    " - Bringing down the instance stops ALL services in here",
+            ):
+                return
+
+        super().run_for_instance(instance)
+        instance.remove_net()
+
+    @classmethod
+    def run_for_project(cls, instance: Instance, project: Project, **kwargs) -> None:
+        COMPOSE_EXE.run(["down"], **project.process_kwargs)
+
+    @classmethod
+    def run_for_filtered_services(cls, instance: Instance, project: Project, services: Services,
+                                  new_service_names: List[str], **kwargs) -> None:
+        if not services:
+            if not click.confirm(
+                    "Did not find any of those services. \n"
+                    f"Bring down the entire project {project.name} instead?",
+                    default=True
+            ):
+                return
+
+        COMPOSE_EXE.run(["stop", *services.names], **project.process_kwargs)
+        COMPOSE_EXE.run(["rm", "-f", *services.names], **project.process_kwargs)

kiwi_scp/commands/cmd_enable.py

@@ -0,0 +1,40 @@
+import click
+
+from .cmd import KiwiCommandType, KiwiCommand
+from .decorators import kiwi_command
+from .._constants import KIWI_CONF_NAME
+from ..instance import Instance
+from ..project import Project
+
+
+@click.option(
+    "-f/-F",
+    "--force/--no-force",
+    help=f"skip confirmation",
+)
+@kiwi_command()
+class EnableCommand(KiwiCommand):
+    """Enable project(s)"""
+
+    type = KiwiCommandType.PROJECTS
+
+    @classmethod
+    def run_for_instance(cls, instance: Instance, force: bool = None) -> None:
+        if not force:
+            if not KiwiCommand.danger_confirm("This will enable all projects in this instance."):
+                return
+
+        super().run_for_instance(instance)
+
+    @classmethod
+    def run_for_project(cls, instance: Instance, project: Project, **kwargs) -> None:
+        if project.config.enabled:
+            KiwiCommand.print_error(f"Project {project.name} is already enabled!")
+            return
+
+        project.config.enabled = True
+        KiwiCommand.print_header(f"Project {project.name} enabled")
+
+        # write out the new kiwi.yml
+        with open(instance.directory.joinpath(KIWI_CONF_NAME), "w") as file:
+            instance.config.dump_kiwi_yml(file)

kiwi_scp/commands/cmd_init.py

@@ -0,0 +1,71 @@
+import logging
+import os
+from ipaddress import IPv4Network
+from pathlib import Path
+
+import click
+
+from .cmd import KiwiCommandType, KiwiCommand
+from .decorators import kiwi_command
+from .._constants import KIWI_CONF_NAME
+from ..config import KiwiConfig
+from ..instance import Instance
+
+_logger = logging.getLogger(__name__)
+
+
+@click.option(
+    "-d",
+    "--directory",
+    help=f"initialize a kiwi-scp instance in another directory",
+    type=click.Path(
+        path_type=Path,
+        dir_okay=True,
+        writable=True,
+    ),
+)
+@click.option(
+    "-f/-F",
+    "--force/--no-force",
+    help=f"use default values even if {KIWI_CONF_NAME} is present",
+)
+@kiwi_command(
+    short_help="Initializes kiwi-scp",
+)
+class InitCommand(KiwiCommand):
+    """Initialize or reconfigure a kiwi-scp instance"""
+
+    type = KiwiCommandType.INSTANCE
+
+    @classmethod
+    def run_for_instance(cls, instance: Instance, directory: Path = None, force: bool = None) -> None:
+        if directory is not None:
+            instance.directory = directory
+
+        current_config = KiwiConfig() if force else instance.config
+
+        # check force switch
+        if force and os.path.isfile(KIWI_CONF_NAME):
+            _logger.warning(f"About to overwrite an existing '{KIWI_CONF_NAME}'!")
+
+        # build new kiwi dict
+        kiwi_dict = current_config.kiwi_dict
+        kiwi_dict.update({
+            "version": KiwiCommand.user_query("kiwi-scp version to use in this instance", current_config.version),
+            "storage": {
+                "directory": KiwiCommand.user_query("local directory for service data",
+                                                    current_config.storage.directory, Path),
+            },
+            "network": {
+                "name": KiwiCommand.user_query("name for local network hub", current_config.network.name),
+                "cidr": KiwiCommand.user_query("CIDRv4 block for local network hub", current_config.network.cidr,
+                                               IPv4Network),
+            },
+        })
+
+        # ensure output directory exists
+        if not os.path.isdir(instance.directory):
+            os.mkdir(instance.directory)
+
+        # write out the new kiwi.yml
+        instance.save_config(KiwiConfig.parse_obj(kiwi_dict))

kiwi_scp/commands/cmd_list.py

@@ -0,0 +1,59 @@
+from typing import List
+
+import click
+
+from .cmd import KiwiCommandType, KiwiCommand
+from .decorators import kiwi_command
+from ..instance import Instance
+from ..project import Project
+
+
+@click.option(
+    "-s/-S",
+    "--show/--no-show",
+    help=f"show actual config contents instead",
+)
+@kiwi_command(
+    short_help="Inspect a kiwi-scp instance",
+)
+class ListCommand(KiwiCommand):
+    """List projects in this instance, services inside a project or service(s) inside a project"""
+
+    type = KiwiCommandType.SERVICES
+
+    @classmethod
+    def run_for_instance(cls, instance: Instance, show: bool = None) -> None:
+        if show:
+            KiwiCommand.print_header(f"Showing config for kiwi-scp instance at '{instance.directory}'.")
+            click.echo_via_pager(instance.config.kiwi_yml)
+
+        else:
+            KiwiCommand.print_header(f"Projects in kiwi-scp instance at '{instance.directory}':")
+            KiwiCommand.print_list(
+                project.name + (click.style(" (disabled)", fg="red") if not project.enabled else "")
+                for project in instance.config.projects
+            )
+
+    @classmethod
+    def run_for_project(cls, instance: Instance, project: Project, show: bool = None) -> None:
+        if show:
+            KiwiCommand.print_header(f"Showing config for all services in project '{project.name}'.")
+            click.echo_via_pager(str(project.services))
+
+        else:
+            KiwiCommand.print_header(f"Services in project '{project.name}':")
+            KiwiCommand.print_list(service.name for service in project.services.content)
+
+    @classmethod
+    def run_for_services(cls, instance: Instance, project: Project, service_names: List[str],
+                         show: bool = None) -> None:
+        services = project.services.filter_existing(service_names)
+        if show:
+            service_names = [service.name for service in services.content]
+            KiwiCommand.print_header(
+                f"Showing config for matching services '{', '.join(service_names)}' in project '{project.name}'.")
+            click.echo_via_pager(str(services))
+
+        else:
+            KiwiCommand.print_header(f"Matching services in project '{project.name}':")
+            KiwiCommand.print_list(service.name for service in services.content)

kiwi_scp/commands/cmd_logs.py

@@ -0,0 +1,44 @@
+from typing import List
+
+import click
+
+from .cmd import KiwiCommandType, KiwiCommand
+from .decorators import kiwi_command
+from ..executable import COMPOSE_EXE
+from ..instance import Instance
+from ..project import Project
+from ..services import Services
+
+
+@click.option(
+    "-f/-F",
+    "--follow/--no-follow",
+    help="output appended data as log grows",
+)
+@kiwi_command(
+    short_help="Show logs",
+)
+class LogsCommand(KiwiCommand):
+    """Show logs of a project or service(s) inside a project"""
+
+    type = KiwiCommandType.SERVICES
+    enabled_only = True
+
+    @classmethod
+    def run_for_filtered_services(cls, instance: Instance, project: Project, services: Services,
+                                  new_service_names: List[str], follow: bool = None) -> None:
+        # include timestamps
+        compose_cmd = ["logs", "-t"]
+
+        # handle following the log output
+        if follow:
+            compose_cmd.extend(("-f", "--tail=10"))
+
+        compose_cmd.extend(services.names)
+
+        if follow:
+            COMPOSE_EXE.run(compose_cmd, **project.process_kwargs)
+
+        else:
+            # output is static, use pager
+            COMPOSE_EXE.run_with_pager(compose_cmd, **project.process_kwargs)

kiwi_scp/commands/cmd_new.py

@@ -0,0 +1,41 @@
+import os
+import shutil
+
+from .cmd import KiwiCommandType, KiwiCommand
+from .decorators import kiwi_command
+from .._constants import DEFAULT_DOCKER_COMPOSE_NAME, COMPOSE_FILE_NAME, RESERVED_PROJECT_NAMES
+from ..config import ProjectConfig
+from ..instance import Instance
+from ..project import Project
+
+
+@kiwi_command()
+class NewCommand(KiwiCommand):
+    """Create new empty project(s) in this instance"""
+
+    type = KiwiCommandType.PROJECTS
+
+    @classmethod
+    def run_for_project(cls, instance: Instance, project: Project, **kwargs) -> None:
+        KiwiCommand.print_error(f"Project {project.name} already exists!")
+
+    @classmethod
+    def run_for_new_project(cls, instance: Instance, project_name: str, **kwargs) -> None:
+        if project_name in RESERVED_PROJECT_NAMES:
+            KiwiCommand.print_error(f"Project name '{project_name}' is reserved!")
+            return
+
+        try:
+            os.mkdir(project_name)
+            instance.config.projects.append(ProjectConfig(
+                name=project_name,
+                enabled=False,
+            ))
+            shutil.copy(
+                DEFAULT_DOCKER_COMPOSE_NAME,
+                instance.directory.joinpath(project_name).joinpath(COMPOSE_FILE_NAME)
+            )
+            instance.save_config(instance.config)
+
+        except FileExistsError:
+            KiwiCommand.print_error(f"Project directory {project_name} already exists!")

kiwi_scp/commands/cmd_pull.py

@@ -0,0 +1,33 @@
+from typing import List
+
+import click
+
+from .cmd import KiwiCommandType, KiwiCommand
+from .decorators import kiwi_command
+from ..executable import COMPOSE_EXE
+from ..instance import Instance
+from ..project import Project
+from ..services import Services
+
+
+@kiwi_command(
+    short_help="Pull docker images",
+)
+class PullCommand(KiwiCommand):
+    """Pull images for the whole instance, a project or service(s) inside a project"""
+
+    type = KiwiCommandType.SERVICES
+    enabled_only = True
+
+    @classmethod
+    def run_for_filtered_services(cls, instance: Instance, project: Project, services: Services,
+                                  new_service_names: List[str], **kwargs) -> None:
+        if not services:
+            if not click.confirm(
+                    "Did not find any of those services. \n"
+                    f"Pull images for the entire project {project.name} instead?",
+                    default=True
+            ):
+                return
+
+        COMPOSE_EXE.run(["pull", "--ignore-pull-failures", *services.names], **project.process_kwargs)

kiwi_scp/commands/cmd_push.py

@@ -0,0 +1,33 @@
+from typing import List
+
+import click
+
+from .cmd import KiwiCommandType, KiwiCommand
+from .decorators import kiwi_command
+from ..executable import COMPOSE_EXE
+from ..instance import Instance
+from ..project import Project
+from ..services import Services
+
+
+@kiwi_command(
+    short_help="Push docker images",
+)
+class PushCommand(KiwiCommand):
+    """Push images for the whole instance, a project or service(s) inside a project"""
+
+    type = KiwiCommandType.SERVICES
+    enabled_only = True
+
+    @classmethod
+    def run_for_filtered_services(cls, instance: Instance, project: Project, services: Services,
+                                  new_service_names: List[str], **kwargs) -> None:
+        if not services:
+            if not click.confirm(
+                    "Did not find any of those services. \n"
+                    f"Push images for the entire project {project.name} instead?",
+                    default=True
+            ):
+                return
+
+        COMPOSE_EXE.run(["push", *services.names], **project.process_kwargs)

kiwi_scp/commands/cmd_restart.py

@@ -0,0 +1,48 @@
+from typing import List
+
+import click
+
+from .cmd import KiwiCommandType, KiwiCommand
+from .decorators import kiwi_command
+from ..executable import COMPOSE_EXE
+from ..instance import Instance
+from ..project import Project
+from ..services import Services
+
+
+@click.option(
+    "-f/-F",
+    "--force/--no-force",
+    help=f"skip confirmation",
+)
+@kiwi_command(
+    short_help="Restart kiwi services",
+)
+class RestartCommand(KiwiCommand):
+    """Restart the whole instance, a project or service(s) inside a project"""
+
+    type = KiwiCommandType.SERVICES
+    enabled_only = True
+
+    @classmethod
+    def run_for_instance(cls, instance: Instance, force: bool = None) -> None:
+        if not force:
+            if not KiwiCommand.danger_confirm(
+                    "This will restart the entire instance.",
+            ):
+                return
+
+        super().run_for_instance(instance)
+
+    @classmethod
+    def run_for_filtered_services(cls, instance: Instance, project: Project, services: Services,
+                                  new_service_names: List[str], **kwargs) -> None:
+        if not services:
+            if not click.confirm(
+                    "Did not find any of those services. \n"
+                    f"Restart the entire project {project.name} instead?",
+                    default=True
+            ):
+                return
+
+        COMPOSE_EXE.run(["restart", *services.names], **project.process_kwargs)

kiwi_scp/commands/cmd_shell.py

@@ -0,0 +1,73 @@
+import logging
+from typing import List, Optional
+
+import click
+
+from .cmd import KiwiCommandType, KiwiCommand
+from .decorators import kiwi_command
+from ..executable import COMPOSE_EXE
+from ..instance import Instance
+from ..project import Project
+from ..services import Services
+
+_logger = logging.getLogger(__name__)
+
+
+@click.option(
+    "-s", "--shell",
+    help="shell to spawn",
+    type=str,
+)
+@click.option(
+    "-u", "--user",
+    help="container user to run shell",
+    type=str,
+)
+@kiwi_command(
+    short_help="Spawn shell",
+)
+class ShellCommand(KiwiCommand):
+    """Spawn shell inside a project's service"""
+
+    type = KiwiCommandType.SERVICES
+    enabled_only = True
+
+    @classmethod
+    def run_for_filtered_services(cls, instance: Instance, project: Project, services: Services,
+                                  new_service_names: List[str], shell: Optional[str] = None,
+                                  user: Optional[str] = None) -> None:
+        # shells from KiwiConfig
+        shells = [
+            *(str(path) for path in instance.config.shells),
+            # as a last resort, fall back to "/bin/sh" and "sh"
+            "/bin/sh", "sh",
+        ]
+
+        # add shell from argument
+        if shell is not None:
+            shells.insert(0, shell)
+
+        user_args = ["-u", user] if user is not None else []
+
+        for service in services.content:
+            try:
+                use_shell = next(service.existing_executables(shells))
+                _logger.debug(f"Using shell {use_shell!r}")
+
+            except StopIteration:
+                if shell is not None:
+                    use_shell = shell
+                    _logger.warning(
+                        "Could not find a working shell in this container. "
+                        f"Launching provided shell {use_shell!r} nevertheless. This might fail!"
+                    )
+
+                else:
+                    _logger.warning(
+                        f"Could not find any working shell among {shells!r} in this container. "
+                        "Please suggest a shell using the '-s SHELL' command line option!"
+                    )
+                    continue
+
+            # spawn shell
+            COMPOSE_EXE.run(['exec', *user_args, service.name, use_shell], **project.process_kwargs)

kiwi_scp/commands/cmd_up.py

@@ -0,0 +1,34 @@
+from typing import List
+
+import click
+
+from .cmd import KiwiCommandType, KiwiCommand
+from .decorators import kiwi_command
+from ..executable import COMPOSE_EXE
+from ..instance import Instance
+from ..project import Project
+from ..services import Services
+
+
+@kiwi_command(short_help="Bring up kiwi services")
+class UpCommand(KiwiCommand):
+    """Bring up the whole instance, a project or service(s) inside a project"""
+
+    type = KiwiCommandType.SERVICES
+    enabled_only = True
+
+    @classmethod
+    def run_for_filtered_services(cls, instance: Instance, project: Project, services: Services,
+                                  new_service_names: List[str], **kwargs) -> None:
+        if not services:
+            if not click.confirm(
+                    "Did not find any of those services. \n"
+                    f"Bring up the entire project {project.name} instead?",
+                    default=True
+            ):
+                return
+
+        instance.create_net()
+        services.copy_configs()
+
+        COMPOSE_EXE.run(["up", "-d", *services.names], **project.process_kwargs)

kiwi_scp/commands/cmd_update.py

@@ -0,0 +1,65 @@
+from typing import List
+
+import click
+from click import get_current_context
+
+from .cmd import KiwiCommandType, KiwiCommand
+from .cmd_build import BuildCommand
+from .cmd_down import DownCommand
+from .cmd_pull import PullCommand
+from .cmd_up import UpCommand
+from .decorators import kiwi_command
+from ..instance import Instance
+from ..project import Project
+from ..services import Services
+
+
+@click.option(
+    "-f/-F",
+    "--force/--no-force",
+    help=f"skip confirmation",
+)
+@kiwi_command(
+    short_help="Update kiwi services",
+)
+class UpdateCommand(KiwiCommand):
+    """Update the whole instance, a project or service(s) inside a project"""
+
+    type = KiwiCommandType.SERVICES
+    enabled_only = True
+
+    @classmethod
+    def run_for_instance(cls, instance: Instance, force: bool = None) -> None:
+        if not force:
+            if not KiwiCommand.danger_confirm(
+                    "This will update the entire instance at once.",
+                    "",
+                    "This may not be what you intended, because:",
+                    " - Updates may take a long time",
+                    " - Updates may break beloved functionality",
+            ):
+                return
+
+        super().run_for_instance(instance)
+
+    @classmethod
+    def run_for_filtered_services(cls, instance: Instance, project: Project, services: Services,
+                                  new_service_names: List[str], **kwargs) -> None:
+        if not services:
+            if not click.confirm(
+                    "Did not find any of those services. \n"
+                    f"Update the entire project {project.name} instead?",
+                    default=True
+            ):
+                return
+
+        ctx = get_current_context()
+        assert isinstance(BuildCommand, click.Command)
+        ctx.forward(BuildCommand)
+        assert isinstance(PullCommand, click.Command)
+        ctx.forward(PullCommand)
+        services.copy_configs()
+        assert isinstance(DownCommand, click.Command)
+        ctx.forward(DownCommand)
+        assert isinstance(UpCommand, click.Command)
+        ctx.forward(UpCommand)

kiwi_scp/commands/decorators.py

@@ -0,0 +1,83 @@
+from typing import Callable, Type, Optional, Tuple
+
+import click
+
+from .cmd import KiwiCommandType, KiwiCommand
+from ..instance import Instance
+
+_pass_instance = click.make_pass_decorator(
+    Instance,
+    ensure=True,
+)
+
+_project_arg = click.argument(
+    "project_name",
+    metavar="PROJECT",
+    type=str,
+)
+
+_projects_arg = click.argument(
+    "project_names",
+    metavar="[PROJECT]...",
+    nargs=-1,
+    type=str,
+)
+
+_services_arg_p = click.argument(
+    "project_name",
+    metavar="[PROJECT]",
+    required=False,
+    type=str,
+)
+
+_services_arg_s = click.argument(
+    "service_names",
+    metavar="[SERVICE]...",
+    nargs=-1,
+    type=str,
+)
+
+
+def kiwi_command(
+        **decorator_kwargs,
+) -> Callable:
+    def decorator(command_cls: Type[KiwiCommand]) -> Callable:
+
+        @click.command(
+            help=command_cls.__doc__,
+            **decorator_kwargs,
+        )
+        @_pass_instance
+        def cmd(ctx: Instance, project_name: Optional[str] = None, project_names: Optional[Tuple[str]] = None,
+                service_names: Optional[Tuple[str]] = None, **kwargs) -> None:
+            if command_cls.type is KiwiCommandType.INSTANCE:
+                project_names = []
+
+            elif command_cls.type is KiwiCommandType.PROJECTS:
+                project_names = list(project_names)
+
+            else:
+                if project_name is None:
+                    project_names = []
+
+                else:
+                    project_names = [project_name]
+
+                if command_cls.type is KiwiCommandType.SERVICES:
+                    service_names = list(service_names)
+
+            command_cls.run(ctx, project_names, service_names, **kwargs)
+
+        if command_cls.type is KiwiCommandType.PROJECT:
+            cmd = _project_arg(cmd)
+
+        elif command_cls.type is KiwiCommandType.PROJECTS:
+            cmd = _projects_arg(cmd)
+
+        elif command_cls.type is KiwiCommandType.SERVICES:
+            cmd = _services_arg_p(cmd)
+            cmd = _services_arg_s(cmd)
+
+        return cmd
+
+    return decorator

kiwi_scp/config.py

@@ -1,157 +1,402 @@
-# system
-import copy
-import logging
-import os
-import re
-import yaml
+import functools
+from ipaddress import IPv4Network
+from pathlib import Path
+from typing import Optional, Dict, List, Any, TextIO, Tuple
 
-# local
-from ._constants import KIWI_CONF_NAME, HEADER_KIWI_CONF_NAME, DEFAULT_KIWI_CONF_NAME, VERSION_TAG_NAME
+from pydantic import BaseModel, constr, root_validator, validator
+
+from ._constants import RE_SEMVER, RE_VARNAME, KIWI_CONF_NAME, RESERVED_PROJECT_NAMES
+from .yaml import YAML
 
 
-class Config:
-    """represents a kiwi.yml"""
+class InvalidFormatError(ValueError):
+    """raised if format recognition unsuccessful"""
 
-    __yml_content = {}
-    __keys = {
-        'version': "kiwi-scp version to use in this instance",
+    cls: type
+    member: Optional[str]
+    data: str
 
-        'runtime:storage': "local directory for service data",
-        'runtime:shells': "shell preference for working in service containers",
-        'runtime:env': "common environment for compose yml",
+    def __init__(self, cls, data, member = None):
+        self.cls = cls
+        self.data = data
 
-        'markers:project': "marker string for project directories",
-        'markers:disabled': "marker string for disabled projects",
+        if member is not None:
+            self.member = member
+            super().__init__(f"Invalid {self.cls.__name__!r}.{self.member!r} Format: {self.data!r}")
 
-        'network:name': "name for local network hub",
-        'network:cidr': "CIDR block for local network hub",
-    }
+        else:
+            super().__init__(f"Invalid {self.cls.__name__!r} Format: {self.data!r}")
 
-    def __key_resolve(self, key):
-        """
-        Resolve nested dictionaries
 
-        If __yml_content is {'a': {'b': {'c': "val"}}} and key is 'a:b:c',
-        this returns a single dict {'c': "val"} and the direct key 'c'
-        """
+class StorageConfig(BaseModel):
+    """a storage subsection"""
 
-        # "a:b:c" => path = ['a', 'b'], key = 'c'
-        path = key.split(':')
-        path, key = path[:-1], path[-1]
+    directory: Path
 
-        # resolve path
-        container = self.__yml_content
-        for step in path:
-            container = container[step]
+    @property
+    def kiwi_dict(self) -> Dict[str, Any]:
+        """write this object as a dictionary of strings"""
 
-        return container, key
+        return {"directory": str(self.directory)}
 
-    def __getitem__(self, key):
-        """array-like read access to __yml_content"""
+    @root_validator(pre=True)
+    @classmethod
+    def unify_storage(cls, values) -> Dict[str, Any]:
+        """parse different storage notations"""
 
-        container, key = self.__key_resolve(key)
-        return container[key]
+        if "directory" in values:
+            # default format
+            return values
 
-    def __setitem__(self, key, value):
-        """array-like write access to __yml_content"""
+        else:
+            # undefined format
+            raise InvalidFormatError(cls, str(values))
 
-        container, key = self.__key_resolve(key)
-        container[key] = value
 
-    def __str__(self):
-        """dump into textual representation"""
+class ProjectNameReservedError(ValueError):
+    """raised if trying to create a project with a reserved name"""
 
-        # dump yml content
-        yml_string = yaml.dump(
-            self.__yml_content,
-            default_flow_style=False, sort_keys=False
-        ).strip()
+    name: str
 
-        # insert newline before every main key
-        yml_string = re.sub(r'^(\S)', r'\n\1', yml_string, flags=re.MULTILINE)
+    def __init__(self, name):
+        self.name = name
+        super().__init__(f"Project name {self.name!r} is reserved!")
 
-        # load header comment from file
-        with open(HEADER_KIWI_CONF_NAME, 'r') as stream:
-            yml_string = stream.read() + yml_string
 
-        return yml_string
+class ProjectConfig(BaseModel):
+    """a project subsection"""
 
-    def _update_from_file(self, filename):
-        """return a copy updated using a kiwi.yml file"""
+    name: constr(regex=RE_VARNAME)
+    enabled: bool = True
+    override_storage: Optional[StorageConfig]
 
-        with open(filename, 'r') as stream:
-            try:
-                # create copy
-                result = Config()
-                result.__yml_content = copy.deepcopy(self.__yml_content)
+    @property
+    def kiwi_dict(self) -> Dict[str, Any]:
+        """write this object as a dictionary of strings"""
 
-                # read file
-                logging.debug(f"Reading '{filename}' into '{id(result.__yml_content)}'")
-                result.__yml_content.update(yaml.safe_load(stream))
+        result = self.dict(exclude={"override_storage"})
+
+        if self.override_storage is not None:
+            result["override_storage"] = self.override_storage.kiwi_dict
 
         return result
-            except yaml.YAMLError as exc:
-                logging.error(exc)
 
-    def user_query(self, key):
-        """query user for new config value"""
+    @validator("name")
+    @classmethod
+    def check_project(cls, value: str) -> str:
+        """check if project name is allowed"""
 
-        # prompt user as per argument
-        try:
-            result = input(f"Enter {self.__keys[key]} [{self[key]}] ").strip()
-        except EOFError:
-            print()
-            result = None
+        if value in RESERVED_PROJECT_NAMES:
+            raise ProjectNameReservedError(value)
 
-        # store result if present
-        if result:
-            self[key] = result
+        return value
 
-    def save(self):
-        """save current yml representation in current directory's kiwi.yml"""
+    @validator("override_storage", pre=True)
+    @classmethod
+    def unify_storage(cls, value) -> Dict[str, Any]:
+        """parse different storage notations"""
 
-        with open(KIWI_CONF_NAME, 'w') as stream:
-            stream.write(str(self))
-            stream.write('\n')
+        if value is None or isinstance(value, dict):
+            return value
+
+        elif isinstance(value, str):
+            return {"directory": value}
+
+        elif isinstance(value, list) and len(value) == 1:
+            return {"directory": value[0]}
+
+        else:
+            # undefined format
+            return {}
+
+    @root_validator(pre=True)
+    @classmethod
+    def unify_project(cls, values) -> Dict[str, Any]:
+        """parse different project notations"""
+
+        if "name" in values:
+            # default format
+            return values
+
+        elif len(values) == 1:
+            # short format:
+            # - <name>: <enabled>
+
+            name, enabled = list(values.items())[0]
+            return {
+                "name": name,
+                "enabled": True if enabled is None else enabled,
+            }
+
+        else:
+            # undefined format
+            raise InvalidFormatError(ProjectConfig, values)
 
 
-class DefaultConfig(Config):
-    """Singleton: The default kiwi.yml file"""
+class NetworkConfig(BaseModel):
+    """a network subsection"""
 
-    __instance = None
+    name: constr(to_lower=True, regex=RE_VARNAME)
+    cidr: IPv4Network
+
+    @property
+    def kiwi_dict(self) -> Dict[str, Any]:
+        """write this object as a dictionary of strings"""
+
+        return {
+            "name": self.name,
+            "cidr": str(self.cidr),
+        }
+
+
+class MissingMemberError(ValueError):
+    """raised if class member is missing a definition"""
+
+    cls: type
+    member: str
+
+    def __init__(self, cls, member):
+        self.cls = cls
+        self.member = member
+        super().__init__(f"Member {self.cls.__name__!r}.{self.member!r} is required!")
+
+
+class KiwiConfig(BaseModel):
+    """represents a kiwi.yml"""
+
+    version: constr(regex=RE_SEMVER) = "0.2.0"
+
+    shells: List[Path] = [
+        Path("/bin/bash"),
+    ]
+
+    projects: List[ProjectConfig] = []
+
+    environment: Dict[str, Optional[str]] = {}
+
+    storage: StorageConfig = StorageConfig(
+        directory="/var/local/kiwi",
+    )
+
+    network: NetworkConfig = NetworkConfig(
+        name="kiwi_hub",
+        cidr="10.22.46.0/24",
+    )
 
     @classmethod
-    def get(cls):
-        if cls.__instance is None:
-            # create singleton
-            cls.__instance = cls()._update_from_file(DEFAULT_KIWI_CONF_NAME)
+    @functools.lru_cache(maxsize=5)
+    def from_directory(cls, directory: Path) -> "KiwiConfig":
+        """parses an actual kiwi.yml from disk (cached)"""
 
-            # add version data from separate file (keeps default config cleaner)
-            with open(VERSION_TAG_NAME, 'r') as stream:
-                cls.__instance['version'] = stream.read().strip()
-
-        # return singleton
-        return cls.__instance
-
-
-class LoadedConfig(Config):
-    """Singleton collection: kiwi.yml files by path"""
-
-    __instances = {}
-
-    @classmethod
-    def get(cls, directory='.'):
-        if directory not in LoadedConfig.__instances:
-            # create singleton for new path
-            result = DefaultConfig.get()
-
-            # update with that dir's kiwi.yml
         try:
-                result = result._update_from_file(os.path.join(directory, KIWI_CONF_NAME))
+            with open(directory.joinpath(KIWI_CONF_NAME)) as kc:
+                return cls.parse_obj(YAML().load(kc))
+
         except FileNotFoundError:
-                logging.info(f"No '{KIWI_CONF_NAME}' found at '{directory}'. Using defaults.")
+            # return the defaults if no kiwi.yml found
+            return cls.from_default()
 
-            LoadedConfig.__instances[directory] = result
+    @classmethod
+    @functools.lru_cache(maxsize=1)
+    def from_default(cls) -> "KiwiConfig":
+        """returns the default config (cached)"""
 
-        # return singleton
-        return LoadedConfig.__instances[directory]
+        return cls()
+
+    def get_project_config(self, name: str) -> Optional[ProjectConfig]:
+        """returns the config of a project with a given name"""
+
+        for project in self.projects:
+            if project.name == name:
+                return project
+
+    @property
+    def kiwi_dict(self) -> Dict[str, Any]:
+        """write this object as a dictionary of strings"""
+
+        result = {
+            "version": self.version,
+            "shells": [str(shell) for shell in self.shells],
+        }
+
+        if self.projects:
+            result["projects"] = [
+                project.kiwi_dict
+                for project in self.projects
+            ]
+
+        if self.environment:
+            result["environment"] = self.environment
+
+        result["storage"] = self.storage.kiwi_dict
+
+        result["network"] = self.network.kiwi_dict
+
+        return result
+
+    def dump_kiwi_yml(self, stream: TextIO = None) -> Optional[str]:
+        """dump a kiwi.yml file"""
+
+        return YAML().dump_kiwi_yml(self.kiwi_dict, stream=stream)
+
+    @property
+    def kiwi_yml(self) -> str:
+        """get a kiwi.yml dump as a string"""
+
+        return self.dump_kiwi_yml()
+
+    @validator("shells", pre=True)
+    @classmethod
+    def unify_shells(cls, value) -> List[str]:
+        """parse different shells notations"""
+
+        if value is None:
+            return []
+
+        elif isinstance(value, list):
+            return value
+
+        elif isinstance(value, dict):
+            return list(value)
+
+        else:
+            # any other format (try to coerce to str first)
+            try:
+                return [str(value)]
+
+            except Exception:
+                # undefined format
+                raise InvalidFormatError(KiwiConfig, value, "shells")
+
+    @validator("projects", pre=True)
+    @classmethod
+    def unify_projects(cls, value) -> List[Dict[str, str]]:
+        """parse different projects notations"""
+
+        if value is None:
+            # empty projects list
+            return []
+
+        elif isinstance(value, list):
+            # handle projects list
+
+            result = []
+            for entry in value:
+                # ignore empties
+                if entry is not None:
+                    if isinstance(entry, dict):
+                        # handle single project dict
+                        result.append(entry)
+
+                    else:
+                        try:
+                            # handle single project name
+                            result.append({"name": str(entry)})
+
+                        except Exception:
+                            # undefined format
+                            raise InvalidFormatError(KiwiConfig, value, "projects")
+
+            return result
+
+        elif isinstance(value, dict):
+            # handle single project dict
+            return [value]
+
+        else:
+            # any other format (try to coerce to str first)
+            try:
+                # handle as a single project name
+                return [{"name": str(value)}]
+
+            except Exception:
+                # undefined format
+                raise InvalidFormatError(KiwiConfig, value, "projects")
+
+    @validator("environment", pre=True)
+    @classmethod
+    def unify_environment(cls, value) -> Dict[str, Optional[str]]:
+        """parse different environment notations"""
+
+        def parse_str(var_val: Any) -> Tuple[str, Optional[str]]:
+            """parse a "<variable>=<value>" string"""
+
+            try:
+                idx = str(var_val).find("=")
+            except Exception:
+                # undefined format
+                raise InvalidFormatError(KiwiConfig, value, "environment")
+
+            if idx == -1:
+                # don't split, just define the variable
+                return var_val, None
+            else:
+                # split string, set variable to value
+                return var_val[:idx], var_val[idx + 1:]
+
+        if value is None:
+            # empty environment
+            return {}
+
+        elif isinstance(value, dict):
+            # native dict format
+            return value
+
+        elif isinstance(value, list):
+            # list format (multiple strings)
+
+            result: Dict[str, Optional[str]] = {}
+            for item in value:
+                key, value = parse_str(item)
+                result[key] = value
+
+            return result
+
+        else:
+            # any other format (try to coerce to str first)
+            # string format (single variable):
+            # "<var>=<value>"
+            key, value = parse_str(value)
+            return {key: value}
+
+    @validator("storage", pre=True)
+    @classmethod
+    def unify_storage(cls, value) -> Dict[str, Any]:
+        """parse different storage notations"""
+
+        if value is None:
+            # empty storage
+            raise MissingMemberError(KiwiConfig, "storage")
+
+        elif isinstance(value, dict):
+            # native dict format
+            return value
+
+        elif isinstance(value, str):
+            # just the directory string
+            return {"directory": value}
+
+        elif isinstance(value, list) and len(value) == 1 and isinstance(value[0], str):
+            # directory string as a single-item list
+            return {"directory": value[0]}
+
+        else:
+            # undefined format
+            return {}
+
+    @validator("network", pre=True)
+    @classmethod
+    def unify_network(cls, value) -> Dict[str, Any]:
+        """parse different network notations"""
+
+        if value is None:
+            # empty network
+            raise MissingMemberError(KiwiConfig, "network")
+
+        elif isinstance(value, dict):
+            # native dict format
+            return value
+
+        else:
+            # undefined format
+            raise InvalidFormatError(KiwiConfig, value, "network")

kiwi_scp/data/etc/command_help.txt

@@ -1,22 +0,0 @@
-Commands for Operation:
-  up          Bring up the whole instance, a project or service(s) inside a project
-  down        Bring down the whole instance, a project or service(s) inside a project
-  update      Update the whole instance, a project or service(s) inside a project
-  restart     Restart the whole instance, a project or service(s) inside a project
-
-Commands for Instance Management:
-  init        Initialize or reconfigure kiwi-scp instance
-  show        Show projects in this instance, services inside a project or service(s) inside a project
-  cmd         Run raw docker-compose command in a project
-
-Commands for Project and Service Management:
-  new         Create new empty project(s) in this instance
-  enable      Enable project(s) in this instance
-  disable     Disable project(s) in this instance
-  logs        Show logs of a project or service(s) inside a project
-  shell       Spawn shell inside a service inside a project
-
-Commands for Image Handling:
-  build       Build images for the whole instance, a project or service(s) inside a project
-  pull        Pull images for the whole instance, a project or service(s) inside a project
-  push        Push images for the whole instance, a project or service(s) inside a project

kiwi_scp/data/etc/docker-compose_default.yml

@@ -10,6 +10,10 @@ networks:
       name: ${KIWI_HUB_NAME}
 
 services:
+  ######################
+  # START EDITING HERE #
+  ######################
+
   # an example service
   something:
     # uses an image

kiwi_scp/data/etc/kiwi_default.yml

@@ -1,12 +0,0 @@
-version:
-runtime:
-  storage: /var/kiwi
-  shells:
-    - /bin/bash
-  env: null
-markers:
-  project: .project
-  disabled: .disabled
-network:
-  name: kiwi_hub
-  cidr: 10.22.46.0/24

kiwi_scp/data/etc/kiwi_help.txt

@@ -1,9 +0,0 @@
-kiwi is the simple tool for managing container servers.
-
-Features:
-  - Group services into projects using their own docker-compose.yml
-  - Bind to the local file system by using ${TARGETDIR} as volume in docker-compose.yml
-  - Add instance-global config files by using ${CONFDIR} as volume in docker-compose.yml
-  - Add instance-global custom values inside docker-compose.yml using config:runtime:env
-  - Build service-specific, private docker images from Dockerfiles
-  - Check full instances into any version control system

kiwi_scp/data/etc/version_tag

@@ -1 +0,0 @@
-0.1.7

kiwi_scp/executable.py

@@ -1,74 +1,64 @@
-# system
+import functools
 import logging
 import os
 import subprocess
+from pathlib import Path
+from typing import Optional, List
+
+import attr
+
+_logger = logging.getLogger(__name__)
 
 
-def _is_executable(filename):
-    if filename is None:
-        return False
+@attr.s
+class Executable:
+    exe_name: str = attr.ib()
 
-    return os.path.isfile(filename) and os.access(filename, os.X_OK)
-
-
-def _find_exe_file(exe_name):
-    for path in os.environ['PATH'].split(os.pathsep):
-        exe_file = os.path.join(path, exe_name)
-        if _is_executable(exe_file):
+    @staticmethod
+    @functools.lru_cache(maxsize=None)
+    def __find_exe_file(exe_name: str) -> Optional[Path]:
+        for path in os.environ["PATH"].split(os.pathsep):
+            exe_file = Path(path).joinpath(exe_name)
+            if os.path.isfile(exe_file) and os.access(exe_file, os.X_OK):
                 return exe_file
 
         raise FileNotFoundError(f"Executable '{exe_name}' not found in $PATH!")
 
+    @property
+    def exe_file(self) -> Optional[Path]:
+        return self.__find_exe_file(self.exe_name)
 
-class Executable:
-    class __Executable:
-        __exe_path = None
+    def __build_cmd(self, args, kwargs) -> List:
+        cmd = [self.exe_file, *args]
 
-        def __init__(self, exe_name):
-            self.__exe_path = _find_exe_file(exe_name)
-
-        def __build_cmd(self, args, kwargs):
-            cmd = [self.__exe_path, *args]
-
-            logging.debug(f"Executable cmd{cmd}, kwargs{kwargs}")
+        _logger.debug(f"Executable cmd{cmd}, kwargs{kwargs}")
         return cmd
 
-        def run(self, process_args, **kwargs):
+    def run(self, process_args, **kwargs) -> Optional[subprocess.CompletedProcess]:
         return subprocess.run(
             self.__build_cmd(process_args, kwargs),
             **kwargs
         )
 
-        def Popen(self, process_args, **kwargs):
+    def Popen(self, process_args, **kwargs) -> subprocess.Popen:
         return subprocess.Popen(
             self.__build_cmd(process_args, kwargs),
             **kwargs
         )
 
-        def run_less(self, process_args, **kwargs):
-            kwargs['stdout'] = subprocess.PIPE
-            kwargs['stderr'] = subprocess.DEVNULL
+    def run_with_pager(self, process_args, **kwargs) -> Optional[subprocess.CompletedProcess]:
+        kwargs["stdout"] = subprocess.PIPE
+        kwargs["stderr"] = subprocess.DEVNULL
 
-            process = self.Popen(
-                process_args,
-                **kwargs
-            )
-
-            less_process = Executable('less').run([
-                '-R', '+G'
+        with self.Popen(process_args, **kwargs) as process:
+            less_process = Executable("less").run([
+                "-R", "+G"
             ], stdin=process.stdout)
 
             process.communicate()
+
         return less_process
 
-    __exe_name = None
-    __instances = {}
 
-    def __init__(self, exe_name):
-        self.__exe_name = exe_name
-
-        if exe_name not in Executable.__instances:
-            Executable.__instances[exe_name] = Executable.__Executable(exe_name)
-
-    def __getattr__(self, item):
-        return getattr(self.__instances[self.__exe_name], item)
+DOCKER_EXE = Executable("docker")
+COMPOSE_EXE = Executable("docker-compose")

kiwi_scp/instance.py

@@ -0,0 +1,108 @@
+import logging
+import subprocess
+from pathlib import Path
+from typing import Generator, Dict, Sequence
+
+import attr
+
+from ._constants import KIWI_CONF_NAME, CONFIG_DIRECTORY_NAME
+from .config import KiwiConfig
+from .executable import DOCKER_EXE
+from .project import Project
+
+_logger = logging.getLogger(__name__)
+
+
+@attr.s
+class Instance:
+    directory: Path = attr.ib(default=Path('.'))
+
+    @property
+    def config(self) -> KiwiConfig:
+        """shorthand: get the current configuration"""
+
+        return KiwiConfig.from_directory(self.directory)
+
+    def save_config(self, config: KiwiConfig) -> None:
+        with open(self.directory.joinpath(KIWI_CONF_NAME), "w") as file:
+            config.dump_kiwi_yml(file)
+
+    @property
+    def config_directory(self):
+        return self.directory.joinpath(CONFIG_DIRECTORY_NAME)
+
+    @property
+    def storage_config_directory(self):
+        return self.config.storage.directory.joinpath(CONFIG_DIRECTORY_NAME)
+
+    @staticmethod
+    def __find_net(net_name):
+        ps = DOCKER_EXE.run([
+            "network", "ls", "--filter", f"name={net_name}", "--format", "{{.Name}}"
+        ], stdout=subprocess.PIPE)
+
+        net_found = str(ps.stdout, 'utf-8').strip()
+
+        return net_found == net_name
+
+    def create_net(self):
+        net_name = self.config.network.name
+        net_cidr = str(self.config.network.cidr)
+
+        if self.__find_net(net_name):
+            _logger.info(f"Network '{net_name}' already exists")
+            return
+
+        try:
+            DOCKER_EXE.run([
+                "network", "create",
+                "--driver", "bridge",
+                "--internal",
+                "--subnet", net_cidr,
+                net_name
+            ], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+            _logger.info(f"Network '{net_name}' created")
+
+        except subprocess.CalledProcessError:
+            _logger.error(f"Error creating network '{net_name}'")
+
+    def remove_net(self):
+        net_name = self.config.network.name
+
+        if not self.__find_net(net_name):
+            _logger.info(f"Network '{net_name}' does not exist")
+            return
+
+        try:
+            DOCKER_EXE.run([
+                "network", "rm",
+                net_name
+            ], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+            _logger.info(f"Network '{net_name}' removed")
+
+        except subprocess.CalledProcessError:
+            _logger.error(f"Error removing network '{net_name}'")
+
+    @property
+    def projects(self) -> Generator[Project, None, None]:
+        for project in self.config.projects:
+            yield Project(
+                directory=self.directory.joinpath(project.name),
+                parent_instance=self,
+            )
+
+    def get_projects(self, project_names: Sequence[str]) -> Dict[str, Project]:
+        existing_projects = {
+            project.name: project
+            for project in self.projects
+            if project.name in project_names
+        }
+        nonexistent_projects = {
+            name: None
+            for name in project_names
+            if name not in existing_projects
+        }
+        return {
+            **existing_projects,
+            **nonexistent_projects
+        }

kiwi_scp/misc.py

@@ -1,37 +0,0 @@
-def _surround(string, bang):
-    midlane = f"{bang * 3} {string} {bang * 3}"
-    sidelane = bang * len(midlane)
-
-    return f"{sidelane}\n{midlane}\n{sidelane}"
-
-
-def _emphasize(lines):
-    if isinstance(lines, list):
-        return '\n'.join([_emphasize(line) for line in lines])
-    elif lines:
-        return f">>> {lines} <<<"
-    else:
-        return lines
-
-
-def are_you_sure(prompt, default="no"):
-    if default.lower() == 'yes':
-        suffix = "[YES|no]"
-    else:
-        suffix = "[yes|NO]"
-
-    answer = input(
-        f"{_surround('MUST HAVE CAREFULING IN PROCESS', '!')}\n"
-        f"\n"
-        f"{_emphasize(prompt)}\n"
-        f"\n"
-        f"Are you sure you want to proceed? {suffix} "
-    ).strip().lower()
-
-    if answer == '':
-        answer = default
-
-    while answer not in ['yes', 'no']:
-        answer = input("Please type 'yes' or 'no' explicitly: ").strip().lower()
-
-    return answer == 'yes'

kiwi_scp/parser.py

@@ -1,66 +0,0 @@
-# system
-import argparse
-
-# local
-from ._constants import COMMAND_HELP_TEXT_NAME, KIWI_HELP_TEXT_NAME
-
-
-class Parser:
-    """Singleton: Main CLI arguments parser"""
-
-    class __Parser:
-        """Singleton type"""
-
-        # argparse objects
-        __parser = None
-        __subparsers = None
-        __args = None
-
-        def __init__(self):
-            # add version data from separate file (keeps default config cleaner)
-            with open(KIWI_HELP_TEXT_NAME, 'r') as stream:
-                kiwi_help = stream.read()
-
-            with open(COMMAND_HELP_TEXT_NAME, 'r') as stream:
-                command_help_text = stream.read()
-
-            # create main parser
-            self.__parser = argparse.ArgumentParser(
-                prog='kiwi',
-                description=kiwi_help,
-                epilog=command_help_text,
-            )
-            self.__parser.formatter_class = argparse.RawDescriptionHelpFormatter
-
-            # main arguments
-            self.__parser.add_argument(
-                '-v', '--verbosity',
-                action='count', default=0
-            )
-
-            # attach subparsers
-            self.__subparsers = self.__parser.add_subparsers()
-            self.__subparsers.required = True
-            self.__subparsers.dest = 'command'
-
-        def get_subparsers(self):
-            return self.__subparsers
-
-        def get_args(self):
-            if self.__args is None:
-                # parse args if needed
-                self.__args, unknowns = self.__parser.parse_known_args()
-                self.__args.unknowns = unknowns
-
-            return self.__args
-
-    __instance = None
-
-    def __init__(self):
-        if Parser.__instance is None:
-            # create singleton
-            Parser.__instance = Parser.__Parser()
-
-    def __getattr__(self, item):
-        """Inner singleton direct access"""
-        return getattr(self.__instance, item)

kiwi_scp/project.py

@@ -1,133 +1,74 @@
-import logging
-import os
+import functools
+from pathlib import Path
+from typing import TYPE_CHECKING, Optional, Dict, Any
 
-from ._constants import CONF_DIRECTORY_NAME
-from .config import LoadedConfig
-from .executable import Executable
+import attr
+from ruamel.yaml import CommentedMap
+
+from ._constants import COMPOSE_FILE_NAME, CONFIG_DIRECTORY_NAME
+from .config import ProjectConfig
+from .service import Service
+from .services import Services
+from .yaml import YAML
+
+if TYPE_CHECKING:
+    from .instance import Instance
 
 
+@attr.s
 class Project:
-    __name = None
+    directory: Path = attr.ib()
+    parent_instance: "Instance" = attr.ib()
 
-    def __init__(self, name):
-        self.__name = name
+    @staticmethod
+    @functools.lru_cache(maxsize=10)
+    def _parse_compose_file(directory: Path) -> CommentedMap:
+        with open(directory.joinpath(COMPOSE_FILE_NAME), "r") as cf:
+            return YAML().load(cf)
 
-    @classmethod
-    def from_file_name(cls, file_name):
-        if os.path.isdir(file_name):
-            config = LoadedConfig.get()
+    @property
+    def name(self) -> str:
+        return self.directory.name
 
-            if file_name.endswith(config['markers:disabled']):
-                file_name = file_name[:-len(config['markers:disabled'])]
+    @property
+    def config(self) -> Optional[ProjectConfig]:
+        return self.parent_instance.config.get_project_config(self.name)
 
-            if file_name.endswith(config['markers:project']):
-                file_name = file_name[:-len(config['markers:project'])]
-                return cls(file_name)
+    @property
+    def process_kwargs(self) -> Dict[str, Any]:
+        directory: Path = self.directory
+        project_name: str = self.name
+        kiwi_hub_name: str = self.parent_instance.config.network.name
+        kiwi_instance_dir: Path = self.parent_instance.config.storage.directory
+        kiwi_config_dir: Path = kiwi_instance_dir.joinpath(CONFIG_DIRECTORY_NAME)
+        kiwi_project_dir: Path = kiwi_instance_dir.joinpath(project_name)
 
-        return None
+        if self.config.override_storage is not None:
+            kiwi_project_dir = self.config.override_storage.directory
 
-    def get_name(self):
-        return self.__name
+        result: Dict[str, Any] = {
+            "cwd": str(directory),
+            "env": {
+                "COMPOSE_PROJECT_NAME": project_name,
+                "KIWI_HUB_NAME": kiwi_hub_name,
+                "KIWI_INSTANCE": str(kiwi_instance_dir),
+                "KIWI_CONFIG": str(kiwi_config_dir),
+                "KIWI_PROJECT": str(kiwi_project_dir),
+            },
+        }
 
-    def dir_name(self):
-        if self.is_enabled():
-            return self.enabled_dir_name()
-        elif self.is_disabled():
-            return self.disabled_dir_name()
-        else:
-            return None
+        result["env"].update(self.parent_instance.config.environment)
 
-    def enabled_dir_name(self):
-        return f"{self.__name}{LoadedConfig.get()['markers:project']}"
+        return result
 
-    def disabled_dir_name(self):
-        return f"{self.enabled_dir_name()}{LoadedConfig.get()['markers:disabled']}"
+    @property
+    def services(self) -> Services:
+        yml = Project._parse_compose_file(self.directory)
 
-    def conf_dir_name(self):
-        return os.path.join(self.dir_name(), CONF_DIRECTORY_NAME)
-
-    def compose_file_name(self):
-        return os.path.join(self.dir_name(), 'docker-compose.yml')
-
-    def target_dir_name(self):
-        return os.path.join(LoadedConfig.get()['runtime:storage'], self.enabled_dir_name())
-
-    def exists(self):
-        return os.path.isdir(self.enabled_dir_name()) or os.path.isdir(self.disabled_dir_name())
-
-    def is_enabled(self):
-        return os.path.isdir(self.enabled_dir_name())
-
-    def is_disabled(self):
-        return os.path.isdir(self.disabled_dir_name())
-
-    def has_configs(self):
-        return os.path.isdir(self.conf_dir_name())
-
-    def __update_kwargs(self, kwargs):
-        if not self.is_enabled():
-            # cannot compose in a disabled project
-            logging.warning(f"Project '{self.get_name()}' is not enabled!")
-            return False
-
-        config = LoadedConfig.get()
-
-        # execute command in project directory
-        kwargs['cwd'] = self.dir_name()
-
-        # ensure there is an environment
-        if 'env' not in kwargs:
-            kwargs['env'] = {}
-
-        # create environment variables for docker commands
-        kwargs['env'].update({
-            'COMPOSE_PROJECT_NAME': self.get_name(),
-            'KIWI_HUB_NAME': config['network:name'],
-            'TARGETROOT': config['runtime:storage'],
-            'CONFDIR': os.path.join(config['runtime:storage'], CONF_DIRECTORY_NAME),
-            'TARGETDIR': self.target_dir_name()
-        })
-
-        # add common environment from config
-        if config['runtime:env'] is not None:
-            kwargs['env'].update(config['runtime:env'])
-
-        logging.debug(f"kwargs updated: {kwargs}")
-
-        return True
-
-    def compose_run(self, compose_args, **kwargs):
-        if self.__update_kwargs(kwargs):
-            Executable('docker-compose').run(compose_args, **kwargs)
-
-    def compose_run_less(self, compose_args, **kwargs):
-        if self.__update_kwargs(kwargs):
-            Executable('docker-compose').run_less(compose_args, **kwargs)
-
-    def enable(self):
-        if self.is_disabled():
-            logging.info(f"Enabling project '{self.get_name()}'")
-            os.rename(self.dir_name(), self.enabled_dir_name())
-
-        elif self.is_enabled():
-            logging.warning(f"Project '{self.get_name()}' is enabled!")
-
-        else:
-            logging.warning(f"Project '{self.get_name()}' not found in instance!")
-            return False
-
-        return True
-
-    def disable(self):
-        if self.is_enabled():
-            logging.info(f"Disabling project '{self.get_name()}'")
-            os.rename(self.dir_name(), self.disabled_dir_name())
-
-        elif self.is_disabled():
-            logging.warning(f"Project '{self.get_name()}' is disabled!")
-
-        else:
-            logging.warning(f"Project '{self.get_name()}' not found in instance!")
-            return False
-
-        return True
+        return Services([
+            Service(
+                name=name,
+                content=content,
+                parent_project=self,
+            ) for name, content in yml["services"].items()
+        ])

kiwi_scp/projects.py

@@ -1,83 +0,0 @@
-import os
-
-from .project import Project
-
-
-class Projects:
-    __projects = None
-
-    def __getitem__(self, item):
-        return self.__projects[item]
-
-    def __str__(self):
-        return str([
-            project.get_name()
-            for project
-            in self.__projects
-        ])
-
-    def __bool__(self):
-        return bool(self.__projects)
-
-    @classmethod
-    def from_names(cls, project_names):
-        result = cls()
-        result.__projects = [
-            Project(name)
-            for name in project_names if isinstance(name, str)
-        ]
-        return result
-
-    @classmethod
-    def from_projects(cls, projects):
-        result = cls()
-        result.__projects = [
-            project
-            for project in projects if isinstance(project, Project)
-        ]
-        return result
-
-    @classmethod
-    def from_dir(cls, directory='.'):
-        return cls.from_projects([
-            Project.from_file_name(file_name)
-            for file_name in os.listdir(directory)
-        ])
-
-    @classmethod
-    def from_args(cls, args):
-        if args is not None and 'projects' in args:
-            if isinstance(args.projects, list) and args.projects:
-                return cls.from_names(args.projects)
-
-            elif isinstance(args.projects, str):
-                return cls.from_names([args.projects])
-
-        return cls()
-
-    def filter_exists(self):
-        result = Projects()
-        result.__projects = [
-            project
-            for project in self.__projects
-            if project.exists()
-        ]
-        return result
-
-    def filter_enabled(self):
-        result = Projects()
-        result.__projects = [
-            project
-            for project in self.__projects
-            if project.is_enabled()
-        ]
-        return result
-
-    def filter_disabled(self):
-        result = Projects()
-        result.__projects = [
-            project
-            for project in self.__projects
-            if project.is_disabled()
-        ]
-        return result

kiwi_scp/rootkit.py

@@ -1,86 +1,94 @@
-# system
+import functools
 import logging
-import os
 import subprocess
+from pathlib import Path
+from typing import Optional, TypeVar, Union, Sequence, Any
+
+import attr
 
-# local
 from ._constants import IMAGES_DIRECTORY_NAME, LOCAL_IMAGES_NAME, DEFAULT_IMAGE_NAME
-from .executable import Executable
+from .executable import DOCKER_EXE
+
+_logger = logging.getLogger(__name__)
+
+ROOTKIT_PREFIX = Path("/mnt")
 
 
-def _prefix_path(prefix, path):
-    if isinstance(path, str):
-        abs_path = os.path.abspath(path)
-        return os.path.realpath(f"{prefix}/{abs_path}")
+@attr.s
+class Rootkit:
+    image_tag: str = attr.ib()
 
-    elif isinstance(path, list):
-        return [_prefix_path(prefix, p) for p in path]
-
-
-def prefix_path_mnt(path):
-    return _prefix_path('/mnt/', path)
-
-
-def _image_name(image_tag):
+    @staticmethod
+    @functools.lru_cache(maxsize=None)
+    def __image_name(image_tag: Optional[str]) -> str:
         if image_tag is not None:
             return f"{LOCAL_IMAGES_NAME}:{image_tag}"
         else:
             return DEFAULT_IMAGE_NAME
 
-
-class Rootkit:
-    class __Rootkit:
-        __image_tag = None
-
-        def __init__(self, image_tag=None):
-            self.__image_tag = image_tag
-
-        def __exists(self):
-            ps = Executable('docker').run([
-                'images',
-                '--filter', f"reference={_image_name(self.__image_tag)}",
-                '--format', '{{.Repository}}:{{.Tag}}'
+    @staticmethod
+    @functools.lru_cache(maxsize=None)
+    def __exists(image_tag: str) -> bool:
+        ps = DOCKER_EXE.run([
+            "images",
+            "--filter", f"reference={Rootkit.__image_name(image_tag)}",
+            "--format", "{{.Repository}}:{{.Tag}}"
         ], stdout=subprocess.PIPE)
 
-            return str(ps.stdout, 'utf-8').strip() == _image_name(self.__image_tag)
+        return str(ps.stdout, "utf-8").strip() == Rootkit.__image_name(image_tag)
 
-        def __build_image(self):
-            if self.__exists():
-                logging.info(f"Using image {_image_name(self.__image_tag)}")
+    def __build_image(self) -> None:
+        if Rootkit.__exists(self.image_tag):
+            _logger.info(f"Using image {Rootkit.__image_name(self.image_tag)}")
         else:
-                if self.__image_tag is None:
-                    logging.info(f"Pulling image {_image_name(self.__image_tag)}")
-                    Executable('docker').run([
-                        'pull', _image_name(self.__image_tag)
+            if self.image_tag is None:
+                _logger.info(f"Pulling image {Rootkit.__image_name(self.image_tag)}")
+                DOCKER_EXE.run([
+                    "pull", Rootkit.__image_name(self.image_tag)
                 ], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
 
             else:
-                    logging.info(f"Building image {_image_name(self.__image_tag)}")
-                    Executable('docker').run([
-                        'build',
-                        '-t', _image_name(self.__image_tag),
-                        '-f', f"{IMAGES_DIRECTORY_NAME}/{self.__image_tag}.Dockerfile",
+                _logger.info(f"Building image {Rootkit.__image_name(self.image_tag)}")
+                DOCKER_EXE.run([
+                    "build",
+                    "-t", Rootkit.__image_name(self.image_tag),
+                    "-f", f"{IMAGES_DIRECTORY_NAME}/{self.image_tag}.Dockerfile",
                     f"{IMAGES_DIRECTORY_NAME}"
                 ], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
 
-        def run(self, process_args, **kwargs):
+    def run(self, process_args, **kwargs) -> Optional[subprocess.CompletedProcess]:
+        any_sequence = TypeVar("any_sequence", Union[str, Path, Any], Sequence[Union[str, Path, Any]])
+
+        def parse_args(argument: any_sequence) -> any_sequence:
+            if isinstance(argument, str):
+                return argument
+
+            elif isinstance(argument, Path):
+                if argument.is_absolute():
+                    argument = argument.relative_to("/")
+
+                return str(ROOTKIT_PREFIX.joinpath(argument))
+
+            elif not isinstance(argument, Sequence):
+                return str(argument)
+
+            else:
+                parsed = [parse_args(path) for path in argument]
+
+                flat = []
+                for item in parsed:
+                    if not isinstance(item, list):
+                        flat.append(item)
+                    else:
+                        flat.extend(item)
+
+                return flat
+
         self.__build_image()
-            Executable('docker').run([
-                'run', '--rm',
-                '-v', '/:/mnt',
-                '-u', 'root',
-                _image_name(self.__image_tag),
-                *process_args
+        return DOCKER_EXE.run([
+            "run", "--rm",
+            "-v", f"/:{ROOTKIT_PREFIX!s}",
+            "-u", "root",
+            Rootkit.__image_name(self.image_tag),
+            *parse_args(process_args)
         ], **kwargs)
-
-    __image_tag = None
-    __instances = {}
-
-    def __init__(self, image_tag=None):
-        self.__image_tag = image_tag
-
-        if _image_name(self.__image_tag) not in Rootkit.__instances:
-            Rootkit.__instances[_image_name(self.__image_tag)] = Rootkit.__Rootkit(image_tag)
-
-    def __getattr__(self, item):
-        return getattr(self.__instances[_image_name(self.__image_tag)], item)

kiwi_scp/runner.py

@@ -1,73 +0,0 @@
-# system
-import logging
-import subprocess
-
-# local
-from . import subcommands
-from .executable import Executable
-from .parser import Parser
-
-
-class Runner:
-    """Singleton: Subcommands setup and run"""
-
-    class __Runner:
-        """Singleton type"""
-
-        __commands = []
-
-        def __init__(self):
-            # probe for Docker access
-            try:
-                Executable('docker').run([
-                    'ps'
-                ], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
-
-            except subprocess.CalledProcessError:
-                logging.critical("Cannot access docker, please get into the docker group or run as root!")
-                quit(1)
-
-            # setup all subcommands
-            for className in subcommands.__all__:
-                cmd = getattr(subcommands, className)
-                self.__commands.append(cmd())
-
-        def run(self, command=None, args=None):
-            """run the desired subcommand"""
-
-            if args is None:
-                args = Parser().get_args()
-
-            if command is None:
-                command = args.command
-
-            for cmd in self.__commands:
-                if str(cmd) == command:
-                    # command found
-                    logging.debug(f"Running '{cmd}' with args: {args}")
-
-                    try:
-                        result = cmd.run(self, args)
-
-                    except KeyboardInterrupt:
-                        print()
-                        logging.warning(f"'{cmd}' aborted, inputs may have been discarded.")
-                        result = False
-
-                    return result
-
-            # command not found
-            logging.error(f"kiwi command '{command}' unknown")
-            return False
-
-    __instance = None
-
-    def __init__(self):
-        if Runner.__instance is None:
-            # create singleton
-            Runner.__instance = Runner.__Runner()
-
-    def __getattr__(self, item):
-        """Inner singleton direct access"""
-
-        return getattr(self.__instance, item)

kiwi_scp/scripts/kiwi.py

@@ -1,38 +1,43 @@
-#!/usr/bin/env python3
-
-# system
 import logging
 
-# local
-import kiwi_scp
+import click
+
+from kiwi_scp.commands import KiwiCLI
 
 
-def set_verbosity(logger, handler, verbosity):
-    """set logging default verbosity level and format"""
+@click.option(
+    "-v", "--verbose",
+    help="increase output verbosity",
+    count=True,
+)
+@click.command(cls=KiwiCLI)
+def main(verbose: int) -> None:
+    """kiwi is the simple tool for managing container servers.
 
-    if verbosity >= 2:
+    \b
+    - Manage full instances using just your favorite version control system
+    - Group services into projects, each with their own docker-compose.yml
+    - Build service-specific, private docker images from Dockerfiles
+    - Make use of the local file system by referring to ${TARGETDIR}, ${TARGETROOT} and ${CONFIGDIR} in compose files
+    - Create your own instance-global variables for compose files using the kiwi.yml "environment" section
+    """
+
+    if verbose >= 2:
         log_level = logging.DEBUG
         log_format = "[%(asctime)s] %(levelname)s @ %(filename)s:%(funcName)s:%(lineno)d: %(message)s"
-    elif verbosity >= 1:
+    elif verbose >= 1:
         log_level = logging.INFO
         log_format = "[%(asctime)s] %(levelname)s: %(message)s"
     else:
         log_level = logging.WARNING
         log_format = "%(levelname)s: %(message)s"
 
-    logger.setLevel(log_level)
-    handler.setFormatter(logging.Formatter(log_format))
-
-
-def main():
     # add a new handler (needed to set the level)
     log_handler = logging.StreamHandler()
     logging.getLogger().addHandler(log_handler)
-    set_verbosity(logging.getLogger(), log_handler, kiwi_scp.verbosity())
 
-    # run the app
-    if not kiwi_scp.run():
-        quit(1)
+    logging.getLogger().setLevel(log_level)
+    log_handler.setFormatter(logging.Formatter(log_format))
 
 
 if __name__ == "__main__":

kiwi_scp/service.py

@@ -0,0 +1,61 @@
+import logging
+import re
+import subprocess
+from itertools import zip_longest
+from pathlib import Path
+from typing import TYPE_CHECKING, Generator, Sequence
+
+import attr
+from ruamel.yaml import CommentedMap
+
+from .executable import COMPOSE_EXE
+
+if TYPE_CHECKING:
+    from .project import Project
+
+_logger = logging.getLogger(__name__)
+
+
+@attr.s
+class Service:
+    name: str = attr.ib()
+    content: CommentedMap = attr.ib()
+    parent_project: "Project" = attr.ib()
+
+    _RE_CONFIGDIR = re.compile(r"^\s*\$(?:CONFIGDIR|{CONFIGDIR})/+(.*)$", flags=re.UNICODE)
+
+    @property
+    def configs(self) -> Generator[Path, None, None]:
+        if "volumes" not in self.content:
+            return
+
+        for volume in self.content["volumes"]:
+            host_part = volume.split(":")[0]
+            cd_match = Service._RE_CONFIGDIR.match(host_part)
+
+            if cd_match:
+                yield Path(cd_match.group(1))
+
+    def has_executable(self, exe_name: str) -> bool:
+        try:
+            # test if desired executable exists
+            COMPOSE_EXE.run(
+                ["exec", "-T", self.name, "/bin/sh", "-c", f"command -v {exe_name}"],
+                check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL,
+                **self.parent_project.process_kwargs,
+            )
+            return True
+
+        except subprocess.CalledProcessError:
+            return False
+
+    def existing_executables(self, exe_names: Sequence[str]) -> Generator[str, None, None]:
+        for cur, nxt in zip_longest(exe_names, exe_names[1:]):
+            if self.has_executable(cur):
+                # found working shell
+                _logger.debug(f"Found executable '{cur}'")
+                yield cur
+
+            elif nxt is not None:
+                # try next in list
+                _logger.info(f"Executable '{cur}' not found in container, trying '{nxt}'")

kiwi_scp/services.py

@@ -0,0 +1,91 @@
+import subprocess
+from pathlib import Path
+from typing import List, Generator, Optional, TYPE_CHECKING, TypeVar, Union
+
+import attr
+
+from .rootkit import Rootkit
+from .yaml import YAML
+
+if TYPE_CHECKING:
+    from .project import Project
+    from .service import Service
+
+
+@attr.s
+class Services:
+    content: List["Service"] = attr.ib()
+
+    def __str__(self) -> str:
+        return YAML().dump({
+            "services": {
+                service.name: service.content
+                for service in self.content
+            },
+            "configs": [
+                str(config)
+                for config in self.configs
+            ],
+        }).strip()
+
+    def __bool__(self) -> bool:
+        return bool(self.content)
+
+    @property
+    def parent_project(self) -> Optional["Project"]:
+        if not self:
+            return
+
+        return self.content[0].parent_project
+
+    @property
+    def configs(self) -> Generator[Path, None, None]:
+        for service in self.content:
+            yield from service.configs
+
+    def copy_configs(self) -> None:
+        path_str_list = TypeVar("path_str_list", Union[Path, str], List[Union[Path, str]])
+
+        def prefix_path(path: path_str_list, prefix: Path) -> path_str_list:
+            if isinstance(path, Path):
+                return prefix.absolute().joinpath(path)
+
+            elif isinstance(path, str):
+                return prefix_path(Path(path), prefix)
+
+            elif isinstance(path, list):
+                return [prefix_path(p, prefix) for p in path]
+
+        project = self.parent_project
+
+        if project is None:
+            return
+
+        instance = project.parent_instance
+        cfgs = list(self.configs)
+
+        local_cfgs = prefix_path(cfgs, instance.config_directory)
+        storage_cfgs = prefix_path(cfgs, instance.storage_config_directory)
+        storage_dirs = [path.parent for path in storage_cfgs]
+
+        Rootkit("rsync").run([
+            "mkdir", "-p", storage_dirs
+        ], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+
+        Rootkit("rsync").run([
+            "rsync", "-rpt", list(zip(local_cfgs, storage_cfgs))
+        ], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+
+    @property
+    def names(self) -> Generator[str, None, None]:
+        return (
+            service.name
+            for service in self.content
+        )
+
+    def filter_existing(self, service_names: List[str]) -> "Services":
+        return Services([
+            service
+            for service in self.content
+            if service.name in service_names
+        ])

kiwi_scp/subcommand.py

@@ -1,128 +0,0 @@
-# system
-import logging
-import os
-
-# local
-from .parser import Parser
-from .projects import Projects
-
-
-class SubCommand:
-    """represents kiwi [anything] command"""
-
-    # actual command string
-    __name = None
-    # command parser
-    _sub_parser = None
-
-    _action = None
-
-    def __init__(self, name, action, add_parser=True, **kwargs):
-        self.__name = name
-        self._action = action
-
-        if add_parser:
-            self._sub_parser = Parser().get_subparsers().add_parser(
-                name,
-                **kwargs
-            )
-
-    def __str__(self):
-        return self.__name
-
-    def _run_instance(self, runner, args):
-        pass
-
-    def run(self, runner, args):
-        """actually run command with parsed CLI args"""
-
-        # run for entire instance
-        logging.info(f"{self._action} kiwi-scp instance at '{os.getcwd()}'")
-        return self._run_instance(runner, args)
-
-
-class ProjectCommand(SubCommand):
-    """this command concerns a project in current instance"""
-
-    def __init__(self, name, num_projects, action, add_parser=True, **kwargs):
-        super().__init__(
-            name, action=action, add_parser=add_parser,
-            **kwargs
-        )
-
-        if num_projects == 1:
-            projects = "a project"
-        else:
-            projects = "project(s)"
-
-        self._sub_parser.add_argument(
-            'projects', metavar='project', nargs=num_projects, type=str,
-            help=f"select {projects} in this instance"
-        )
-
-    def _run_instance(self, runner, args):
-        # default: run for all enabled projects
-        return self._run_projects(runner, args, Projects.from_dir().filter_enabled())
-
-    def _run_projects(self, runner, args, projects):
-        # default: run for all given projects
-        return all([
-            self._run_project(runner, args, project)
-            for project in projects
-        ])
-
-    def _run_project(self, runner, args, project):
-        pass
-
-    def run(self, runner, args):
-        projects = Projects.from_args(args)
-
-        if projects:
-            # project(s) given
-            logging.info(f"{self._action} projects {projects}")
-            return self._run_projects(runner, args, projects)
-
-        else:
-            return super().run(runner, args)
-
-
-class ServiceCommand(ProjectCommand):
-    """this command concerns service(s) in a project"""
-
-    def __init__(self, name, num_projects, num_services, action, add_parser=True, **kwargs):
-        super().__init__(
-            name, num_projects=num_projects, action=action, add_parser=add_parser,
-            **kwargs
-        )
-
-        if (isinstance(num_projects, str) and num_projects == '*') \
-                or (isinstance(num_projects, int) and num_projects > 1):
-            raise ValueError(f"Invalid choice for project count: {num_projects}")
-
-        if num_services == 1:
-            services = "a service"
-        else:
-            services = "service(s)"
-
-        self._sub_parser.add_argument(
-            'services', metavar='service', nargs=num_services, type=str,
-            help=f"select {services} in a project"
-        )
-
-    def _run_project(self, runner, args, project):
-        # default: run with empty service list
-        return self._run_services(runner, args, project, [])
-
-    def _run_services(self, runner, args, project, services):
-        pass
-
-    def run(self, runner, args):
-        if 'services' in args and args.services:
-            project = Projects.from_args(args)[0]
-
-            # run for service(s) inside project
-            logging.info(f"{self._action} project '{project.get_name()}', services {args.services}")
-            return self._run_services(runner, args, project, args.services)
-
-        else:
-            return super().run(runner, args)

kiwi_scp/subcommands/__init__.py

@@ -1,39 +0,0 @@
-# local
-from ._hidden import ConfCopyCommand, NetUpCommand
-
-from .build import BuildCommand
-from .cmd import CmdCommand
-from .disable import DisableCommand
-from .down import DownCommand
-from .enable import EnableCommand
-from .init import InitCommand
-from .logs import LogsCommand
-from .new import NewCommand
-from .pull import PullCommand
-from .push import PushCommand
-from .restart import RestartCommand
-from .shell import ShellCommand
-from .show import ShowCommand
-from .up import UpCommand
-from .update import UpdateCommand
-
-__all__ = [
-    'ConfCopyCommand',
-    'NetUpCommand',
-
-    'BuildCommand',
-    'CmdCommand',
-    'DisableCommand',
-    'DownCommand',
-    'EnableCommand',
-    'InitCommand',
-    'LogsCommand',
-    'NewCommand',
-    'PullCommand',
-    'PushCommand',
-    'RestartCommand',
-    'ShellCommand',
-    'ShowCommand',
-    'UpCommand',
-    'UpdateCommand',
-]

kiwi_scp/subcommands/_hidden.py

@@ -1,85 +0,0 @@
-# system
-import logging
-import subprocess
-
-# local
-from ..config import LoadedConfig
-from ..executable import Executable
-from ..projects import Projects
-from ..rootkit import Rootkit, prefix_path_mnt
-from ..subcommand import SubCommand
-
-
-class ConfCopyCommand(SubCommand):
-    """kiwi conf-copy"""
-
-    def __init__(self):
-        super().__init__(
-            'conf-copy',
-            action="Syncing all configs for", add_parser=False,
-            description="Synchronize all config files to target directory"
-        )
-
-    def _run_instance(self, runner, args):
-        conf_dirs = [
-            project.conf_dir_name()
-            for project in Projects.from_dir().filter_enabled()
-            if project.has_configs()
-        ]
-
-        if conf_dirs:
-            # add target directory
-            conf_dirs.append(LoadedConfig.get()['runtime:storage'])
-            logging.info(f"Sync directories: {conf_dirs}")
-
-            Rootkit('rsync').run([
-                'rsync', '-rpt', '--delete', *prefix_path_mnt(conf_dirs)
-            ], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
-
-        return True
-
-
-def _find_net(net_name):
-    ps = Executable('docker').run([
-        'network', 'ls', '--filter', f"name={net_name}", '--format', '{{.Name}}'
-    ], stdout=subprocess.PIPE)
-
-    net_found = str(ps.stdout, 'utf-8').strip()
-
-    return net_found == net_name
-
-
-class NetUpCommand(SubCommand):
-    """kiwi net-up"""
-
-    def __init__(self):
-        super().__init__(
-            'net-up',
-            action="Creating the local network hub for", add_parser=False,
-            description="Create the local network hub for this instance"
-        )
-
-    def _run_instance(self, runner, args):
-        config = LoadedConfig.get()
-        net_name = config['network:name']
-        net_cidr = config['network:cidr']
-
-        if _find_net(net_name):
-            logging.info(f"Network '{net_name}' already exists")
-            return True
-
-        try:
-            Executable('docker').run([
-                'network', 'create',
-                '--driver', 'bridge',
-                '--internal',
-                '--subnet', net_cidr,
-                net_name
-            ], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
-            logging.info(f"Network '{net_name}' created")
-
-        except subprocess.CalledProcessError:
-            logging.error(f"Error creating network '{net_name}'")
-            return False
-
-        return True

kiwi_scp/subcommands/build.py

@@ -1,18 +0,0 @@
-# local
-from ..subcommand import ServiceCommand
-
-
-class BuildCommand(ServiceCommand):
-    """kiwi build"""
-
-    def __init__(self):
-        super().__init__(
-            'build', num_projects='?', num_services='*',
-            action="Building images for",
-            description="Build images for the whole instance, a project or service(s) inside a project"
-        )
-
-    def _run_services(self, runner, args, project, services):
-        project.compose_run(['build', '--pull', *services])
-
-        return True

kiwi_scp/subcommands/cmd.py

@@ -1,40 +0,0 @@
-# system
-import logging
-
-# local
-from ..subcommand import ProjectCommand
-
-
-class CmdCommand(ProjectCommand):
-    """kiwi cmd"""
-
-    def __init__(self):
-        super().__init__(
-            'cmd', num_projects=1,
-            action="Running docker-compose in",
-            description="Run raw docker-compose command in a project"
-        )
-
-        # command for docker-compose
-        self._sub_parser.add_argument(
-            'compose_cmd', metavar='cmd', type=str,
-            help="command for 'docker-compose'"
-        )
-
-        # arguments for docker-compose command
-        self._sub_parser.add_argument(
-            'compose_args', metavar='arg', nargs='*', type=str,
-            help="arguments for 'docker-compose' commands"
-        )
-
-    def _run_project(self, runner, args, project):
-        if args.unknowns:
-            args.compose_args = [*args.compose_args, *args.unknowns]
-            args.unknowns = []
-
-            logging.debug(f"Updated args: {args}")
-
-        # run with split compose_cmd argument
-        project.compose_run([args.compose_cmd, *args.compose_args])
-
-        return True

kiwi_scp/subcommands/disable.py

@@ -1,16 +0,0 @@
-# local
-from ..subcommand import ProjectCommand
-
-
-class DisableCommand(ProjectCommand):
-    """kiwi disable"""
-
-    def __init__(self):
-        super().__init__(
-            'disable', num_projects='+',
-            action="Disabling",
-            description="Disable project(s) in this instance"
-        )
-
-    def _run_project(self, runner, args, project):
-        return project.disable()

kiwi_scp/subcommands/down.py

@@ -1,56 +0,0 @@
-# system
-import logging
-import subprocess
-
-# local
-from ._hidden import _find_net
-from ..config import LoadedConfig
-from ..executable import Executable
-from ..misc import are_you_sure
-from ..subcommand import ServiceCommand
-
-
-class DownCommand(ServiceCommand):
-    """kiwi down"""
-
-    def __init__(self):
-        super().__init__(
-            'down', num_projects='?', num_services='*',
-            action="Bringing down",
-            description="Bring down the whole instance, a project or service(s) inside a project"
-        )
-
-    def _run_instance(self, runner, args):
-        net_name = LoadedConfig.get()['network:name']
-
-        if are_you_sure([
-            "This will bring down the entire instance.",
-            "",
-            "This may not be what you intended, because:",
-            " - Bringing down the instance stops ALL services in here",
-        ]):
-            if super()._run_instance(runner, args):
-                # remove the hub network afterwards
-                if _find_net(net_name):
-                    Executable('docker').run([
-                        'network', 'rm', net_name
-                    ], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
-
-                    logging.info(f"Network '{net_name}' removed")
-
-                else:
-                    logging.info(f"Network '{net_name}' does not exist")
-
-                return True
-
-        return False
-
-    def _run_project(self, runner, args, project):
-        project.compose_run(['down'])
-        return True
-
-    def _run_services(self, runner, args, project, services):
-        project.compose_run(['stop', *services])
-        project.compose_run(['rm', '-f', *services])
-
-        return True

kiwi_scp/subcommands/enable.py

@@ -1,16 +0,0 @@
-# local
-from ..subcommand import ProjectCommand
-
-
-class EnableCommand(ProjectCommand):
-    """kiwi enable"""
-
-    def __init__(self):
-        super().__init__(
-            'enable', num_projects='+',
-            action="Enabling",
-            description="Enable project(s) in this instance"
-        )
-
-    def _run_project(self, runner, args, project):
-        return project.enable()

kiwi_scp/subcommands/init.py

@@ -1,63 +0,0 @@
-# system
-import logging
-import os
-
-# local
-from .._constants import KIWI_CONF_NAME
-from ..config import DefaultConfig, LoadedConfig
-from ..subcommand import SubCommand
-
-
-class InitCommand(SubCommand):
-    """kiwi init"""
-
-    def __init__(self):
-        super().__init__(
-            'init',
-            action=f"Initializing '{KIWI_CONF_NAME}' in",
-            description="Initialize or reconfigure kiwi-scp instance"
-        )
-
-        # -f switch: Initialize with default config
-        self._sub_parser.add_argument(
-            '-f', '--force',
-            action='store_true',
-            help=f"use default values even if {KIWI_CONF_NAME} is present"
-        )
-
-        # -s switch: Show current config instead
-        self._sub_parser.add_argument(
-            '-s', '--show',
-            action='store_true',
-            help=f"show effective {KIWI_CONF_NAME} contents instead"
-        )
-
-    def _run_instance(self, runner, args):
-        config = LoadedConfig.get()
-
-        # check show switch
-        if args.show:
-            print(config)
-            return True
-
-        # check force switch
-        if args.force and os.path.isfile(KIWI_CONF_NAME):
-            logging.warning(f"Overwriting existing '{KIWI_CONF_NAME}'!")
-            config = DefaultConfig.get()
-
-        # version
-        config.user_query('version')
-
-        # runtime
-        config.user_query('runtime:storage')
-
-        # markers
-        config.user_query('markers:project')
-        config.user_query('markers:disabled')
-
-        # network
-        config.user_query('network:name')
-        config.user_query('network:cidr')
-
-        config.save()
-        return True

kiwi_scp/subcommands/logs.py

@@ -1,40 +0,0 @@
-# local
-from ..subcommand import ServiceCommand
-
-
-class LogsCommand(ServiceCommand):
-    """kiwi logs"""
-
-    def __init__(self):
-        super().__init__(
-            'logs', num_projects=1, num_services='*',
-            action="Showing logs of",
-            description="Show logs of a project or service(s) inside a project"
-        )
-
-        # -f switch: Follow logs
-        self._sub_parser.add_argument(
-            '-f', '--follow', action='store_true',
-            help="output appended data as log grows"
-        )
-
-    def _run_services(self, runner, args, project, services):
-        # include timestamps
-        compose_cmd = ['logs', '-t']
-
-        # handle following the log output
-        if args.follow:
-            compose_cmd = [*compose_cmd, '-f', '--tail=10']
-
-        # append if one or more services are given
-        if services:
-            compose_cmd = [*compose_cmd, *args.services]
-
-        if args.follow:
-            project.compose_run(compose_cmd)
-
-        else:
-            # use 'less' viewer if output is static
-            project.compose_run_less(compose_cmd)
-
-        return True

kiwi_scp/subcommands/new.py

@@ -1,30 +0,0 @@
-# system
-import logging
-import os
-import shutil
-
-# local
-from .._constants import DEFAULT_DOCKER_COMPOSE_NAME
-from ..subcommand import ProjectCommand
-
-
-class NewCommand(ProjectCommand):
-    """kiwi new"""
-
-    def __init__(self):
-        super().__init__(
-            'new', num_projects='+',
-            action="Creating",
-            description="Create new empty project(s) in this instance"
-        )
-
-    def _run_project(self, runner, args, project):
-        if project.exists():
-            logging.error(f"Project '{project.get_name()}' exists in this instance!")
-            return False
-
-        else:
-            os.mkdir(project.disabled_dir_name())
-            shutil.copy(DEFAULT_DOCKER_COMPOSE_NAME, project.compose_file_name())
-            logging.debug(f"Project '{project.get_name()}' created")
-            return True

kiwi_scp/subcommands/pull.py

@@ -1,18 +0,0 @@
-# local
-from ..subcommand import ServiceCommand
-
-
-class PullCommand(ServiceCommand):
-    """kiwi pull"""
-
-    def __init__(self):
-        super().__init__(
-            'pull', num_projects='?', num_services='*',
-            action="Pulling images for",
-            description="Pull images for the whole instance, a project or service(s) inside a project"
-        )
-
-    def _run_services(self, runner, args, project, services):
-        project.compose_run(['pull', '--ignore-pull-failures', *services])
-
-        return True

kiwi_scp/subcommands/purge.py

@@ -1,45 +0,0 @@
-# system
-import logging
-import subprocess
-
-# local
-from ._hidden import _find_net
-from ..config import LoadedConfig
-from ..executable import Executable
-from ..misc import are_you_sure
-from ..subcommand import SubCommand
-
-
-class PurgeCommand(SubCommand):
-    """kiwi purge"""
-
-    def __init__(self):
-        super().__init__(
-            'purge',
-            action="Tearing down",
-            description="Remove all running docker artifacts of this instance"
-        )
-
-    def _run_instance(self, runner, args):
-        net_name = LoadedConfig.get()['network:name']
-
-        if not _find_net(net_name):
-            logging.info(f"Network '{net_name}' does not exist")
-            return True
-
-        try:
-            if are_you_sure("This will bring down this instance's hub network!"):
-                if runner.run('down'):
-                    Executable('docker').run([
-                        'network', 'rm', net_name
-                    ], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
-
-                    logging.info(f"Network '{net_name}' removed")
-            else:
-                return False
-
-        except subprocess.CalledProcessError:
-            logging.error(f"Error removing network '{net_name}'")
-            return False
-
-        return True

kiwi_scp/subcommands/push.py

@@ -1,18 +0,0 @@
-# local
-from ..subcommand import ServiceCommand
-
-
-class PushCommand(ServiceCommand):
-    """kiwi push"""
-
-    def __init__(self):
-        super().__init__(
-            'push', num_projects='?', num_services='*',
-            action="Pushing images for",
-            description="Push images for the whole instance, a project or service(s) inside a project"
-        )
-
-    def _run_services(self, runner, args, project, services):
-        project.compose_run(['push', *services])
-
-        return True

kiwi_scp/subcommands/restart.py

@@ -1,26 +0,0 @@
-# local
-from ..misc import are_you_sure
-from ..subcommand import ServiceCommand
-
-
-class RestartCommand(ServiceCommand):
-    """kiwi restart"""
-
-    def __init__(self):
-        super().__init__(
-            'restart', num_projects='?', num_services='*',
-            action="Restarting",
-            description="Restart the whole instance, a project or service(s) inside a project"
-        )
-
-    def _run_instance(self, runner, args):
-        if are_you_sure([
-            "This will restart the entire instance."
-        ]):
-            return super()._run_instance(runner, args)
-
-        return False
-
-    def _run_services(self, runner, args, project, services):
-        project.compose_run(['restart', *services])
-        return True

kiwi_scp/subcommands/shell.py

@@ -1,104 +0,0 @@
-# system
-import logging
-import subprocess
-
-from ..config import LoadedConfig
-# local
-from ..subcommand import ServiceCommand
-
-
-def _service_has_executable(project, service, exe_name):
-    """
-    Test if service in project has an executable exe_name in its PATH.
-    Requires /bin/sh.
-    """
-
-    try:
-        # test if desired shell exists
-        project.compose_run(
-            ['exec', service, '/bin/sh', '-c', f"command -v {exe_name}"],
-            check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL
-        )
-        return True
-
-    except subprocess.CalledProcessError as e:
-        # fallback
-        return False
-
-
-def _find_shell(args, project, service):
-    """find first working shell (provided by config and args) in service in project"""
-
-    # builtin shells: as a last resort, fallback to '/bin/sh' and 'sh'
-    shells = ['/bin/sh', 'sh']
-
-    # load favorite shells from config
-    config = LoadedConfig.get()
-    if config['runtime:shells']:
-        shells = [*config['runtime:shells'], *shells]
-
-    # consider shell from args
-    if args.shell:
-        shells = [args.shell, *shells]
-
-    logging.debug(f"Shells priority: {shells}")
-
-    # actually try shells
-    for i, shell in enumerate(shells):
-        if _service_has_executable(project, service, shell):
-            # found working shell
-            logging.debug(f"Using shell '{shell}'")
-            return shell
-
-        elif i + 1 < len(shells):
-            # try next in list
-            logging.info(f"Shell '{shell}' not found in container, trying '{shells[i + 1]}'")
-
-        elif args.shell:
-            # not found, user suggestion provided
-            logging.warning(f"Could not find any working shell in this container. "
-                            f"Launching provided '{args.shell}' nevertheless. "
-                            f"Don't get mad if this fails!")
-            return args.shell
-
-        else:
-            # not found, search exhausted
-            logging.error(f"Could not find any working shell among '{shells}' in this container. "
-                          f"Please suggest a shell using the '-s SHELL' command line option!")
-            return None
-
-
-class ShellCommand(ServiceCommand):
-    """kiwi shell"""
-
-    def __init__(self):
-        super().__init__(
-            'shell', num_projects=1, num_services=1,
-            action="Spawning shell in",
-            description="Spawn shell inside a project's service"
-        )
-
-        # -s argument: Select shell
-        self._sub_parser.add_argument(
-            '-s', '--shell', type=str,
-            help="shell to spawn"
-        )
-
-        # -u argument: Run as user
-        self._sub_parser.add_argument(
-            '-u', '--user', type=str,
-            help="container user to run shell"
-        )
-
-    def _run_services(self, runner, args, project, services):
-        service = services[0]
-        shell = _find_shell(args, project, service)
-
-        user_args = ['-u', args.user] if args.user else []
-
-        if shell is not None:
-            # spawn shell
-            project.compose_run(['exec', *user_args, service, shell])
-            return True
-
-        return False

kiwi_scp/subcommands/show.py

@@ -1,98 +0,0 @@
-# system
-import logging
-import os
-import yaml
-
-from ..project import Project
-from ..projects import Projects
-# local
-from ..subcommand import ServiceCommand
-
-
-def _print_list(strings):
-    if isinstance(strings, str):
-        print(f" - {strings}")
-
-    elif isinstance(strings, Project):
-        _print_list(strings.get_name())
-
-    elif isinstance(strings, list):
-        for string in strings:
-            _print_list(string)
-
-    else:
-        _print_list(list(strings))
-
-
-class ShowCommand(ServiceCommand):
-    """kiwi show"""
-
-    def __init__(self):
-        super().__init__(
-            'show', num_projects='?', num_services='*',
-            action="Showing",
-            description="Show projects in this instance, services inside a project or service(s) inside a project"
-        )
-
-    def _run_instance(self, runner, args):
-        print(f"kiwi-scp instance at '{os.getcwd()}'")
-        print("#########")
-        projects = Projects.from_dir()
-
-        enabled_projects = projects.filter_enabled()
-        if enabled_projects:
-            print(f"Enabled projects:")
-            _print_list(enabled_projects)
-
-        disabled_projects = projects.filter_disabled()
-        if disabled_projects:
-            print(f"Disabled projects:")
-            _print_list(disabled_projects)
-
-        return True
-
-    def _run_project(self, runner, args, project):
-        if not project.exists():
-            logging.warning(f"Project '{project.get_name()}' not found")
-            return False
-
-        print(f"Services in project '{project.get_name()}':")
-        print("#########")
-
-        with open(project.compose_file_name(), 'r') as stream:
-            try:
-                docker_compose_yml = yaml.safe_load(stream)
-                _print_list(docker_compose_yml['services'].keys())
-
-            except yaml.YAMLError as exc:
-                logging.error(exc)
-
-        return True
-
-    def _run_services(self, runner, args, project, services):
-        if not project.exists():
-            logging.error(f"Project '{project.get_name()}' not found")
-            return False
-
-        print(f"Configuration of services {services} in project '{project.get_name()}':")
-        print("#########")
-
-        with open(project.compose_file_name(), 'r') as stream:
-            try:
-                docker_compose_yml = yaml.safe_load(stream)
-
-                for service_name in services:
-                    try:
-                        print(yaml.dump(
-                            {service_name: docker_compose_yml['services'][service_name]},
-                            default_flow_style=False, sort_keys=False
-                        ).strip())
-                    except KeyError:
-                        logging.error(f"Service '{service_name}' not found")
-
-                return True
-
-            except yaml.YAMLError as exc:
-                logging.error(exc)
-
-        return False

kiwi_scp/subcommands/up.py

@@ -1,26 +0,0 @@
-# local
-from ..subcommand import ServiceCommand
-
-
-class UpCommand(ServiceCommand):
-    """kiwi up"""
-
-    def __init__(self):
-        super().__init__(
-            'up', num_projects='?', num_services='*',
-            action="Bringing up",
-            description="Bring up the whole instance, a project or service(s) inside a project"
-        )
-
-    def _run_instance(self, runner, args):
-        if runner.run('conf-copy'):
-            return super()._run_instance(runner, args)
-
-        return False
-
-    def _run_services(self, runner, args, project, services):
-        if runner.run('net-up'):
-            project.compose_run(['up', '-d', *services])
-            return True
-
-        return False

kiwi_scp/subcommands/update.py

@@ -1,37 +0,0 @@
-# local
-from ..misc import are_you_sure
-from ..subcommand import ServiceCommand
-
-
-class UpdateCommand(ServiceCommand):
-    """kiwi update"""
-
-    def __init__(self):
-        super().__init__(
-            'update', num_projects='?', num_services='*',
-            action="Updating",
-            description="Update the whole instance, a project or service(s) inside a project"
-        )
-
-    def _run_instance(self, runner, args):
-        if are_you_sure([
-            "This will update the entire instance at once.",
-            "",
-            "This is probably not what you intended, because:",
-            " - Updates may take a long time",
-            " - Updates may break beloved functionality",
-        ]):
-            return super()._run_instance(runner, args)
-
-        return False
-
-    def _run_services(self, runner, args, project, services):
-        result = True
-
-        result &= runner.run('build')
-        result &= runner.run('pull')
-        result &= runner.run('conf-copy')
-        result &= runner.run('down')
-        result &= runner.run('up')
-
-        return result

kiwi_scp/wstring.py

@@ -0,0 +1,97 @@
+import re
+from enum import Enum, auto
+from typing import List
+
+import attr
+import wcwidth
+
+
+class WAlignment(Enum):
+    LEFT = auto()
+    RIGHT = auto()
+    CENTER = auto()
+
+
+@attr.s
+class WString:
+    s: str = attr.ib()
+
+    # from https://stackoverflow.com/a/38662876
+    ANSI_ESCAPES = re.compile(r"(?:\x1B[@-_]|[\x80-\x9F])[0-?]*[ -/]*[@-~]")
+
+    def __str__(self) -> str:
+        return self.s
+
+    def __len__(self) -> int:
+        return wcwidth.wcswidth(WString.ANSI_ESCAPES.sub("", self.s))
+
+    def pad(self, alignment: WAlignment = WAlignment.CENTER, wlen: int = 0, char: str = " ") -> "WString":
+        char = char[0]
+
+        if alignment is WAlignment.LEFT:
+            return WString(f"{self}{char * wlen}")
+        elif alignment is WAlignment.RIGHT:
+            return WString(f"{char * wlen}{self}")
+        else:
+            pad_l, pad_r = wlen // 2, wlen - (wlen // 2)
+            return WString(f"{char * pad_l}{self}{char * pad_r}")
+
+
+@attr.s
+class WParagraph:
+    lines: List[WString] = attr.ib()
+
+    def __str__(self) -> str:
+        return "\n".join(
+            str(line)
+            for line in self.lines
+        )
+
+    @classmethod
+    def from_strings(cls, *source: str) -> "WParagraph":
+        return cls([
+            WString(line)
+            for line in source
+        ])
+
+    def align(self, alignment: WAlignment = WAlignment.CENTER, padding: int = 0, char: str = " ") -> "WParagraph":
+        total_length = max(
+            len(line)
+            for line in self.lines
+        ) + padding
+        pad_lengths = (
+            total_length - len(line)
+            for line in self.lines
+        )
+
+        return WParagraph([
+            line.pad(alignment, wlen, char)
+            for line, wlen in zip(self.lines, pad_lengths)
+        ])
+
+    def surround(self, char: str, padding: int = 1) -> "WParagraph":
+        char = char[0]
+        padding = " " * padding
+
+        l_border, r_border = char + padding, padding + char
+
+        lines = [
+            WString(f"{l_border}{line}{r_border}")
+            for line in self.lines
+        ]
+        extra_line = char * len(lines[0])
+
+        return WParagraph([
+            extra_line,
+            *lines,
+            extra_line,
+        ])
+
+    def emphasize(self, count: int = 3, padding: int = 1) -> "WParagraph":
+        padding = " " * padding
+        l_border, r_border = (">" * count) + padding, padding + ("<" * count)
+
+        return WParagraph([
+            WString(f"{l_border}{line}{r_border}")
+            for line in self.lines
+        ])

kiwi_scp/yaml.py

@@ -0,0 +1,37 @@
+import re
+from typing import Optional
+
+import ruamel.yaml
+import ruamel.yaml.compat
+
+from ._constants import HEADER_KIWI_CONF_NAME
+
+
+class YAML(ruamel.yaml.YAML):
+    def __init__(self, *args, **kwargs) -> None:
+        super().__init__(*args, **kwargs)
+        self.indent(sequence=4, offset=2)
+
+    def dump(self, data, stream=None, **kwargs) -> Optional[str]:
+        into_str: bool = False
+        if stream is None:
+            into_str = True
+            stream = ruamel.yaml.compat.StringIO()
+
+        super().dump(data, stream=stream, **kwargs)
+        if into_str:
+            return stream.getvalue()
+
+    @staticmethod
+    def _format_kiwi_yml(yml_string: str) -> str:
+        # insert newline before every main key
+        yml_string = re.sub(r"^(\S)", r"\n\1", yml_string, flags=re.MULTILINE)
+
+        # load header comment from file
+        with open(HEADER_KIWI_CONF_NAME, 'r') as stream:
+            yml_string = stream.read() + yml_string
+
+        return yml_string
+
+    def dump_kiwi_yml(self, data, **kwargs) -> Optional[str]:
+        return self.dump(data, transform=YAML._format_kiwi_yml, **kwargs)

poetry.lock

@@ -1,45 +1,544 @@
 [[package]]
-name = "pyyaml"
-version = "5.4.1"
-description = "YAML parser and emitter for Python"
+name = "atomicwrites"
+version = "1.4.0"
+description = "Atomic file writes."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[[package]]
+name = "attrs"
+version = "21.4.0"
+description = "Classes Without Boilerplate"
 category = "main"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*"
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[package.extras]
+dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "zope.interface", "furo", "sphinx", "sphinx-notfound-page", "pre-commit", "cloudpickle"]
+docs = ["furo", "sphinx", "zope.interface", "sphinx-notfound-page"]
+tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "zope.interface", "cloudpickle"]
+tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "cloudpickle"]
+
+[[package]]
+name = "click"
+version = "8.0.4"
+description = "Composable command line interface toolkit"
+category = "main"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+colorama = {version = "*", markers = "platform_system == \"Windows\""}
+importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
+
+[[package]]
+name = "colorama"
+version = "0.4.4"
+description = "Cross-platform colored terminal text."
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[[package]]
+name = "coverage"
+version = "6.2"
+description = "Code coverage measurement for Python"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+tomli = {version = "*", optional = true, markers = "extra == \"toml\""}
+
+[package.extras]
+toml = ["tomli"]
+
+[[package]]
+name = "dataclasses"
+version = "0.8"
+description = "A backport of the dataclasses module for Python 3.6"
+category = "main"
+optional = false
+python-versions = ">=3.6, <3.7"
+
+[[package]]
+name = "distlib"
+version = "0.3.4"
+description = "Distribution utilities"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "filelock"
+version = "3.4.1"
+description = "A platform independent file lock."
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.extras]
+docs = ["furo (>=2021.8.17b43)", "sphinx (>=4.1)", "sphinx-autodoc-typehints (>=1.12)"]
+testing = ["covdefaults (>=1.2.0)", "coverage (>=4)", "pytest (>=4)", "pytest-cov", "pytest-timeout (>=1.4.2)"]
+
+[[package]]
+name = "importlib-metadata"
+version = "4.8.3"
+description = "Read metadata from Python packages"
+category = "main"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+typing-extensions = {version = ">=3.6.4", markers = "python_version < \"3.8\""}
+zipp = ">=0.5"
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
+perf = ["ipython"]
+testing = ["pytest (>=6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "packaging", "pep517", "pyfakefs", "flufl.flake8", "pytest-perf (>=0.9.2)", "pytest-black (>=0.3.7)", "pytest-mypy", "importlib-resources (>=1.3)"]
+
+[[package]]
+name = "importlib-resources"
+version = "5.4.0"
+description = "Read resources from Python packages"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+zipp = {version = ">=3.1.0", markers = "python_version < \"3.10\""}
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
+testing = ["pytest (>=6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "pytest-black (>=0.3.7)", "pytest-mypy"]
+
+[[package]]
+name = "iniconfig"
+version = "1.1.1"
+description = "iniconfig: brain-dead simple config-ini parsing"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "packaging"
+version = "21.3"
+description = "Core utilities for Python packages"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+pyparsing = ">=2.0.2,<3.0.5 || >3.0.5"
+
+[[package]]
+name = "platformdirs"
+version = "2.4.0"
+description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.extras]
+docs = ["Sphinx (>=4)", "furo (>=2021.7.5b38)", "proselint (>=0.10.2)", "sphinx-autodoc-typehints (>=1.12)"]
+test = ["appdirs (==1.4.4)", "pytest (>=6)", "pytest-cov (>=2.7)", "pytest-mock (>=3.6)"]
+
+[[package]]
+name = "pluggy"
+version = "1.0.0"
+description = "plugin and hook calling mechanisms for python"
+category = "dev"
+optional = false
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+    {file = "ruamel.yaml.clib-0.2.6-cp39-cp39-manylinux1_x86_64.whl", hash = "sha256:1866cf2c284a03b9524a5cc00daca56d80057c5ce3cdc86a52020f4c720856f0"},
+    {file = "ruamel.yaml.clib-0.2.6-cp39-cp39-win32.whl", hash = "sha256:3fb9575a5acd13031c57a62cc7823e5d2ff8bc3835ba4d94b921b4e6ee664104"},
+    {file = "ruamel.yaml.clib-0.2.6-cp39-cp39-win_amd64.whl", hash = "sha256:825d5fccef6da42f3c8eccd4281af399f21c02b32d98e113dbc631ea6a6ecbc7"},
+    {file = "ruamel.yaml.clib-0.2.6.tar.gz", hash = "sha256:4ff604ce439abb20794f05613c374759ce10e3595d1867764dd1ae675b85acbd"},
+]
+six = [
+    {file = "six-1.16.0-py2.py3-none-any.whl", hash = "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"},
+    {file = "six-1.16.0.tar.gz", hash = "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926"},
+]
+toml = [
+    {file = "toml-0.10.2-py2.py3-none-any.whl", hash = "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b"},
+    {file = "toml-0.10.2.tar.gz", hash = "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"},
+]
+tomli = [
+    {file = "tomli-1.2.3-py3-none-any.whl", hash = "sha256:e3069e4be3ead9668e21cb9b074cd948f7b3113fd9c8bba083f48247aab8b11c"},
+    {file = "tomli-1.2.3.tar.gz", hash = "sha256:05b6166bff487dc068d322585c7ea4ef78deed501cc124060e0f238e89a9231f"},
+]
+typing-extensions = [
+    {file = "typing_extensions-4.1.1-py3-none-any.whl", hash = "sha256:21c85e0fe4b9a155d0799430b0ad741cdce7e359660ccbd8b530613e8df88ce2"},
+    {file = "typing_extensions-4.1.1.tar.gz", hash = "sha256:1a9462dcc3347a79b1f1c0271fbe79e844580bb598bafa1ed208b94da3cdcd42"},
+]
+virtualenv = [
+    {file = "virtualenv-20.13.1-py2.py3-none-any.whl", hash = "sha256:45e1d053cad4cd453181ae877c4ffc053546ae99e7dd049b9ff1d9be7491abf7"},
+    {file = "virtualenv-20.13.1.tar.gz", hash = "sha256:e0621bcbf4160e4e1030f05065c8834b4e93f4fcc223255db2a823440aca9c14"},
+]
+wcwidth = [
+    {file = "wcwidth-0.2.5-py2.py3-none-any.whl", hash = "sha256:beb4802a9cebb9144e99086eff703a642a13d6a0052920003a230f3294bbe784"},
+    {file = "wcwidth-0.2.5.tar.gz", hash = "sha256:c4d647b99872929fdb7bdcaa4fbe7f01413ed3d98077df798530e5b04f116c83"},
+]
+zipp = [
+    {file = "zipp-3.6.0-py3-none-any.whl", hash = "sha256:9fe5ea21568a0a70e50f273397638d39b03353731e6cbbb3fd8502a33fec40bc"},
+    {file = "zipp-3.6.0.tar.gz", hash = "sha256:71c644c5369f4a6e07636f0aa966270449561fcea2e3d6747b8d23efaa9d7832"},
 ]

pyproject.toml

@@ -1,14 +1,22 @@
 [tool.poetry]
 name = "kiwi-scp"
-version = "0.1.7"
+version = "0.2.0"
 description = "kiwi is the simple tool for managing container servers."
 authors = ["ldericher <40151420+ldericher@users.noreply.github.com>"]
 
 [tool.poetry.dependencies]
-python = "^3.6"
-PyYAML = "^5.4.1"
+python = "^3.6.1"
+attrs = "^21.2.0"
+click = "^8.0.3"
+pydantic = "^1.8.2"
+"ruamel.yaml" = "^0.17.16"
+wcwidth = "^0.2.5"
 
 [tool.poetry.dev-dependencies]
+pytest = "^7.0.0"
+pytest-cov = "^3.0.0"
+toml = "^0.10.2"
+virtualenv = "^20.10.0"
 
 [tool.poetry.scripts]
 kiwi = "kiwi_scp.scripts.kiwi:main"

tests/test_config.py

@@ -0,0 +1,491 @@
+from ipaddress import IPv4Network
+from pathlib import Path
+
+import pytest
+from pydantic import ValidationError
+
+from kiwi_scp.config import KiwiConfig
+from kiwi_scp.yaml import YAML
+
+
+class UnCoercibleError(ValueError):
+    pass
+
+
+class UnCoercible:
+    """A class that doesn't have a string representation"""
+
+    def __str__(self):
+        raise UnCoercibleError()
+
+    def __repr__(self) -> str:
+        return "UnCoercible()"
+
+
+class TestDefault:
+    def test(self):
+        import toml
+
+        c = KiwiConfig()
+        version = toml.load("./pyproject.toml")["tool"]["poetry"]["version"]
+
+        assert c == KiwiConfig.from_default()
+
+        assert c.version == version
+        assert len(c.shells) == 1
+        assert c.shells[0] == Path("/bin/bash")
+        assert c.projects == []
+        assert c.environment == {}
+        assert c.storage.directory == Path("/var/local/kiwi")
+        assert c.network.name == "kiwi_hub"
+        assert c.network.cidr == IPv4Network("10.22.46.0/24")
+
+        kiwi_dict = {
+            "version": version,
+            "shells": ["/bin/bash"],
+            "storage": {"directory": "/var/local/kiwi"},
+            "network": {
+                "name": "kiwi_hub",
+                "cidr": "10.22.46.0/24",
+            },
+        }
+        assert c.kiwi_dict == kiwi_dict
+
+        assert c.kiwi_yml == YAML().dump_kiwi_yml(kiwi_dict)
+
+
+class TestVersion:
+    def test_valid(self):
+        c = KiwiConfig(version="0.0.0")
+        assert c.version == "0.0.0"
+
+        c = KiwiConfig(version="0.0")
+        assert c.version == "0.0"
+
+        c = KiwiConfig(version="0")
+        assert c.version == "0"
+
+        c = KiwiConfig(version=1.0)
+        assert c.version == "1.0"
+
+        c = KiwiConfig(version=1)
+        assert c.version == "1"
+
+    def test_invalid(self):
+        # definitely not a version
+        with pytest.raises(ValidationError) as exc_info:
+            KiwiConfig(version="dnaf")
+
+        assert len(exc_info.value.errors()) == 1
+        error = exc_info.value.errors()[0]
+        assert error["msg"].find("string does not match regex") != -1
+        assert error["type"] == "value_error.str.regex"
+
+        # almost a version
+        with pytest.raises(ValidationError) as exc_info:
+            c = KiwiConfig(version="0.0.0alpha")
+            print(c.version)
+
+        assert len(exc_info.value.errors()) == 1
+        error = exc_info.value.errors()[0]
+        assert error["msg"].find("string does not match regex") != -1
+        assert error["type"] == "value_error.str.regex"
+
+
+class TestShells:
+    def test_empty(self):
+        c = KiwiConfig(shells=None)
+
+        assert c == KiwiConfig(shells=[])
+
+        assert c.shells == []
+
+    def test_list(self):
+        c = KiwiConfig(shells=["/bin/sh", "sh"])
+
+        assert len(c.shells) == 2
+        assert c.shells[0] == Path("/bin/sh")
+        assert c.shells[1] == Path("sh")
+
+        c = KiwiConfig(shells=["/bin/bash"])
+
+        assert len(c.shells) == 1
+        assert c.shells[0] == Path("/bin/bash")
+
+    def test_dict(self):
+        c = KiwiConfig(shells={"/bin/bash": None})
+
+        assert len(c.shells) == 1
+        assert c.shells[0] == Path("/bin/bash")
+
+    def test_coercible(self):
+        c = KiwiConfig(shells="/bin/bash")
+
+        assert c == KiwiConfig(shells=Path("/bin/bash"))
+
+        assert len(c.shells) == 1
+        assert c.shells[0] == Path("/bin/bash")
+
+        c = KiwiConfig(shells=123)
+
+        assert len(c.shells) == 1
+        assert c.shells[0] == Path("123")
+
+    def test_uncoercible(self):
+        with pytest.raises(ValidationError) as exc_info:
+            KiwiConfig(shells=UnCoercible())
+
+        assert len(exc_info.value.errors()) == 1
+        error = exc_info.value.errors()[0]
+        assert error["msg"] == "Invalid 'KiwiConfig'.'shells' Format: UnCoercible()"
+        assert error["type"] == "value_error.invalidformat"
+
+        with pytest.raises(ValidationError) as exc_info:
+            KiwiConfig(shells=["/bin/bash", UnCoercible()])
+
+        assert len(exc_info.value.errors()) == 1
+        error = exc_info.value.errors()[0]
+        assert error["msg"] == "value is not a valid path"
+        assert error["type"] == "type_error.path"
+
+
+class TestProject:
+    def test_empty(self):
+        c = KiwiConfig(projects=None)
+
+        assert c == KiwiConfig(projects=[])
+        assert c.projects == []
+
+        assert c.get_project_config("invalid") is None
+
+    def test_long(self):
+        kiwi_dict = {
+            "name": "project",
+            "enabled": False,
+            "override_storage": {"directory": "/test/directory"},
+        }
+        c = KiwiConfig(projects=[kiwi_dict])
+
+        assert len(c.projects) == 1
+        p = c.projects[0]
+        assert p.name == "project"
+        assert p == c.get_project_config("project")
+        assert not p.enabled
+        assert p.override_storage is not None
+
+        assert c.kiwi_dict["projects"][0] == kiwi_dict
+
+    def test_storage_str(self):
+        kiwi_dict = {
+            "name": "project",
+            "enabled": False,
+            "override_storage": "/test/directory",
+        }
+        c = KiwiConfig(projects=[kiwi_dict])
+
+        assert len(c.projects) == 1
+        p = c.projects[0]
+        assert p.name == "project"
+        assert not p.enabled
+        assert p.override_storage is not None
+
+    def test_storage_list(self):
+        kiwi_dict = {
+            "name": "project",
+            "enabled": False,
+            "override_storage": ["/test/directory"],
+        }
+        c = KiwiConfig(projects=[kiwi_dict])
+
+        assert len(c.projects) == 1
+        p = c.projects[0]
+        assert p.name == "project"
+        assert not p.enabled
+        assert p.override_storage is not None
+
+    def test_storage_invalid(self):
+        kiwi_dict = {
+            "name": "project",
+            "enabled": False,
+            "override_storage": True,
+        }
+        with pytest.raises(ValidationError) as exc_info:
+            KiwiConfig(projects=[kiwi_dict])
+
+        assert len(exc_info.value.errors()) == 1
+        error = exc_info.value.errors()[0]
+        assert error["msg"] == "Invalid 'StorageConfig' Format: '{}'"
+        assert error["type"] == "value_error.invalidformat"
+
+    def test_short(self):
+        kiwi_dict = {
+            "project": False,
+        }
+        c = KiwiConfig(projects=[kiwi_dict])
+
+        assert len(c.projects) == 1
+        p = c.projects[0]
+        assert p.name == "project"
+        assert not p.enabled
+        assert p.override_storage is None
+
+        resulting_kiwi_dict = {
+            "name": "project",
+            "enabled": False,
+        }
+        assert p.kiwi_dict == resulting_kiwi_dict
+
+    def test_dict(self):
+        c = KiwiConfig(projects={"name": "project"})
+
+        assert c == KiwiConfig(projects=[{"name": "project"}])
+
+        assert len(c.projects) == 1
+        p = c.projects[0]
+        assert p.name == "project"
+        assert p.enabled
+        assert p.override_storage is None
+
+    def test_reserved_name(self):
+        with pytest.raises(ValidationError) as exc_info:
+            KiwiConfig(projects={"name": "config"})
+
+        assert len(exc_info.value.errors()) == 1
+        error = exc_info.value.errors()[0]
+        assert error["msg"] == "Project name 'config' is reserved!"
+        assert error["type"] == "value_error.projectnamereserved"
+
+    def test_invalid_dict(self):
+        with pytest.raises(ValidationError) as exc_info:
+            KiwiConfig(projects={
+                "random key 1": "random value 1",
+                "random key 2": "random value 2",
+            })
+
+        assert len(exc_info.value.errors()) == 1
+        error = exc_info.value.errors()[0]
+        assert error["msg"] == "Invalid 'ProjectConfig' Format: " \
+                               "{'random key 1': 'random value 1', 'random key 2': 'random value 2'}"
+        assert error["type"] == "value_error.invalidformat"
+
+    def test_coercible(self):
+        c = KiwiConfig(projects="project")
+
+        assert c == KiwiConfig(projects=["project"])
+
+        assert len(c.projects) == 1
+        p = c.projects[0]
+        assert p.name == "project"
+        assert p.enabled
+        assert p.override_storage is None
+
+    def test_uncoercible(self):
+        with pytest.raises(ValidationError) as exc_info:
+            KiwiConfig(projects=["valid", UnCoercible()])
+
+        assert len(exc_info.value.errors()) == 1
+        error = exc_info.value.errors()[0]
+        assert error["msg"] == "Invalid 'KiwiConfig'.'projects' Format: ['valid', UnCoercible()]"
+        assert error["type"] == "value_error.invalidformat"
+
+        with pytest.raises(ValidationError) as exc_info:
+            KiwiConfig(projects=UnCoercible())
+
+        assert len(exc_info.value.errors()) == 1
+        error = exc_info.value.errors()[0]
+        assert error["msg"] == "Invalid 'KiwiConfig'.'projects' Format: UnCoercible()"
+        assert error["type"] == "value_error.invalidformat"
+
+
+class TestEnvironment:
+    def test_empty(self):
+        c = KiwiConfig(environment=None)
+
+        assert c.environment == {}
+
+    def test_dict(self):
+        c = KiwiConfig(environment={})
+
+        assert c.environment == {}
+
+        kiwi_dict = {"variable": "value"}
+        c = KiwiConfig(environment=kiwi_dict)
+
+        assert len(c.environment) == 1
+        assert "variable" in c.environment
+        assert c.environment["variable"] == "value"
+
+        assert c.kiwi_dict["environment"] == kiwi_dict
+
+    def test_list(self):
+        c = KiwiConfig(environment=[])
+
+        assert c.environment == {}
+
+        c = KiwiConfig(environment=[
+            "variable=value",
+        ])
+
+        assert len(c.environment) == 1
+        assert "variable" in c.environment
+        assert c.environment["variable"] == "value"
+
+        c = KiwiConfig(environment=[
+            "variable",
+        ])
+
+        assert len(c.environment) == 1
+        assert "variable" in c.environment
+        assert c.environment["variable"] is None
+
+        c = KiwiConfig(environment=[
+            123,
+        ])
+
+        assert len(c.environment) == 1
+        assert "123" in c.environment
+        assert c.environment["123"] is None
+
+    def test_coercible(self):
+        c = KiwiConfig(environment="variable=value")
+
+        assert len(c.environment) == 1
+        assert "variable" in c.environment
+        assert c.environment["variable"] == "value"
+
+        c = KiwiConfig(environment="variable")
+
+        assert len(c.environment) == 1
+        assert "variable" in c.environment
+        assert c.environment["variable"] is None
+
+        c = KiwiConfig(environment=123)
+
+        assert len(c.environment) == 1
+        assert "123" in c.environment
+        assert c.environment["123"] is None
+
+        c = KiwiConfig(environment=123.4)
+
+        assert len(c.environment) == 1
+        assert "123.4" in c.environment
+        assert c.environment["123.4"] is None
+
+    def test_uncoercible(self):
+        with pytest.raises(ValidationError) as exc_info:
+            KiwiConfig(environment=UnCoercible())
+
+        assert len(exc_info.value.errors()) == 1
+        error = exc_info.value.errors()[0]
+        assert error["msg"] == "Invalid 'KiwiConfig'.'environment' Format: UnCoercible()"
+        assert error["type"] == "value_error.invalidformat"
+
+        with pytest.raises(ValidationError) as exc_info:
+            KiwiConfig(environment=["valid", UnCoercible()])
+
+        assert len(exc_info.value.errors()) == 1
+        error = exc_info.value.errors()[0]
+        assert error["msg"] == "Invalid 'KiwiConfig'.'environment' Format: None"
+        assert error["type"] == "value_error.invalidformat"
+
+
+class TestStorage:
+    def test_empty(self):
+        with pytest.raises(ValidationError) as exc_info:
+            KiwiConfig(storage=None)
+
+        assert len(exc_info.value.errors()) == 1
+        error = exc_info.value.errors()[0]
+        assert error["msg"] == "Member 'KiwiConfig'.'storage' is required!"
+        assert error["type"] == "value_error.missingmember"
+
+    def test_dict(self):
+        kiwi_dict = {"directory": "/test/directory"}
+        c = KiwiConfig(storage=kiwi_dict)
+
+        assert c.storage.directory == Path("/test/directory")
+        assert c.storage.kiwi_dict == kiwi_dict
+
+    def test_invalid_dict(self):
+        with pytest.raises(ValidationError) as exc_info:
+            KiwiConfig(storage={"random key": "random value"})
+
+        assert len(exc_info.value.errors()) == 1
+        error = exc_info.value.errors()[0]
+        assert error["msg"] == "Invalid 'StorageConfig' Format: \"{'random key': 'random value'}\""
+        assert error["type"] == "value_error.invalidformat"
+
+    def test_str(self):
+        c = KiwiConfig(storage="/test/directory")
+
+        assert c.storage.directory == Path("/test/directory")
+
+    def test_list(self):
+        c = KiwiConfig(storage=["/test/directory"])
+
+        assert c.storage.directory == Path("/test/directory")
+
+    def test_invalid(self):
+        with pytest.raises(ValidationError) as exc_info:
+            KiwiConfig(storage=True)
+
+        assert len(exc_info.value.errors()) == 1
+        error = exc_info.value.errors()[0]
+        assert error["msg"] == "Invalid 'StorageConfig' Format: '{}'"
+        assert error["type"] == "value_error.invalidformat"
+
+
+class TestNetwork:
+    def test_empty(self):
+        with pytest.raises(ValidationError) as exc_info:
+            KiwiConfig(network=None)
+
+        assert len(exc_info.value.errors()) == 1
+        error = exc_info.value.errors()[0]
+        assert error["msg"] == "Member 'KiwiConfig'.'network' is required!"
+        assert error["type"] == "value_error.missingmember"
+
+    def test_dict(self):
+        kiwi_dict = {
+            "name": "test_hub",
+            "cidr": "1.2.3.4/32",
+        }
+        c = KiwiConfig(network=kiwi_dict)
+
+        assert c == KiwiConfig(network={
+            "name": "TEST_HUB",
+            "cidr": "1.2.3.4/32",
+        })
+
+        assert c.network.name == "test_hub"
+        assert c.network.cidr == IPv4Network("1.2.3.4/32")
+        assert c.network.kiwi_dict == kiwi_dict
+
+    def test_invalid_dict(self):
+        with pytest.raises(ValidationError) as exc_info:
+            KiwiConfig(network={"name": "test_hub"})
+
+        assert len(exc_info.value.errors()) == 1
+        error = exc_info.value.errors()[0]
+        assert error["msg"] == "field required"
+        assert error["type"] == "value_error.missing"
+
+        with pytest.raises(ValidationError) as exc_info:
+            KiwiConfig(network={
+                "name": "test_hub",
+                "cidr": "1.2.3.4/123",
+            })
+
+        assert len(exc_info.value.errors()) == 1
+        error = exc_info.value.errors()[0]
+        assert error["msg"] == "value is not a valid IPv4 network"
+        assert error["type"] == "value_error.ipv4network"
+
+    def test_invalid(self):
+        with pytest.raises(ValidationError) as exc_info:
+            KiwiConfig(network=True)
+
+        assert len(exc_info.value.errors()) == 1
+        error = exc_info.value.errors()[0]
+        assert error["msg"] == "Invalid 'KiwiConfig'.'network' Format: True"
+        assert error["type"] == "value_error.invalidformat"

tests/test_instance.py

@@ -0,0 +1,29 @@
+from pathlib import Path
+
+from kiwi_scp.instance import Instance
+
+
+class TestDefault:
+    def test_example(self):
+        i = Instance(Path("example"))
+
+        assert i.config is not None
+        assert len(i.config.projects) == 1
+
+        pc = i.config.projects[0]
+
+        assert pc.name == "hello_world"
+
+    def test_empty(self):
+        i = Instance()
+
+        assert i.config is not None
+        assert len(i.config.projects) == 0
+
+    def test_no_such_dir(self):
+        nonexistent_path = Path("nonexistent")
+        i = Instance(nonexistent_path)
+
+        assert i.directory == nonexistent_path
+        assert i.config is not None
+        assert len(i.config.projects) == 0

tests/test_project.py

@@ -0,0 +1,40 @@
+from pathlib import Path
+
+import pytest
+
+from kiwi_scp._constants import COMPOSE_FILE_NAME
+from kiwi_scp.config import KiwiConfig
+from kiwi_scp.project import Project
+
+
+class TestDefault:
+    cfg = KiwiConfig()
+
+    def test_example(self):
+        p = Project(
+            directory=Path("example/hello_world"),
+            parent_instance=None,
+        )
+
+        ss = p.services
+
+        assert len(ss.content) == 5
+
+        s = ss.content[0]
+
+        assert s.name == "greeter"
+
+        ss2 = p.services.filter_existing(["nonexistent"])
+
+        assert len(ss2.content) == 0
+
+    def test_empty(self):
+        p = Project(
+            directory=Path("nonexistent"),
+            parent_instance=None,
+        )
+
+        with pytest.raises(FileNotFoundError) as exc_info:
+            _ = p.services
+
+        assert exc_info.value.filename == f"nonexistent/{COMPOSE_FILE_NAME}"

tests/test_service.py

@@ -0,0 +1,66 @@
+from pathlib import Path
+
+from ruamel.yaml import CommentedMap
+
+from kiwi_scp.service import Service
+
+
+class TestDefault:
+    def test_empty(self):
+        s = Service(
+            name="s",
+            content=CommentedMap(),
+            parent_project=None,
+        )
+
+        assert s.name == "s"
+        assert list(s.configs) == []
+
+    def test_no_configs(self):
+        s = Service(
+            name="s",
+            content=CommentedMap({
+                "image": "repo/image:tag",
+            }),
+            parent_project=None,
+        )
+
+        assert s.name == "s"
+        assert list(s.configs) == []
+
+    def test_no_configs_in_volumes(self):
+        s = Service(
+            name="s",
+            content=CommentedMap({
+                "image": "repo/image:tag",
+                "volumes": [
+                    "docker_volume/third/dir:/path/to/third/mountpoint",
+                    "${TARGETDIR}/some/dir:/path/to/some/mountpoint",
+                    "$TARGETDIR/other/dir:/path/to/other/mountpoint",
+                ]
+            }),
+            parent_project=None,
+        )
+
+        assert s.name == "s"
+        assert list(s.configs) == []
+
+    def test_with_configs(self):
+        s = Service(
+            name="s",
+            content=CommentedMap({
+                "image": "repo/image:tag",
+                "volumes": [
+                    "${CONFIGDIR}/some/config:/path/to/some/config",
+                    "$CONFIGDIR/other/config:/path/to/other/config",
+                ]
+            }),
+            parent_project=None,
+        )
+
+        assert s.name == "s"
+        assert len(list(s.configs)) == 2
+        assert list(s.configs) == [
+            Path("some/config"),
+            Path("other/config"),
+        ]

tests/test_services.py

@@ -0,0 +1,16 @@
+from ruamel.yaml import CommentedMap
+
+from kiwi_scp.service import Service
+from kiwi_scp.services import Services
+
+
+class TestServices:
+    def test_empty(self):
+        s = Service(
+            name="s",
+            content=CommentedMap(),
+            parent_project=None,
+        )
+        ss = Services([s])
+
+        assert str(ss) == "services:\n  s: {}\nconfigs: []"