doc + error handling

src/kiwi/runner.py

@@ -42,7 +42,14 @@ class Runner:
                 if str(cmd) == args.command:
                     # command found
                     logging.debug(f"Running '{cmd}' with args: {args}")
+
+                    try:
                         cmd.run(LoadedConfig.get(), args)
+
+                    except KeyboardInterrupt:
+                        print()
+                        logging.warning(f"'{cmd}' aborted, inputs may have been discarded.")
+
                     return True
 
             # command not found

src/kiwi/subcommands/_subcommand.py

@@ -41,15 +41,20 @@ class ProjectCommand(SubCommand):
 
 
 class ServiceCommand(ProjectCommand):
-    """this command concerns services in a project"""
+    """this command concerns service(s) in a project"""
 
-    def __init__(self, name, nargs='*', **kwargs):
+    def __init__(self, name, nargs=1, **kwargs):
         super().__init__(
             name,
             **kwargs
         )
 
+        services = "service"
+
+        if not nargs == 1:
+            services = "services"
+
         self._sub_parser.add_argument(
             'services', metavar='service', nargs=nargs, type=str,
-            help="select service(s) in a project"
+            help=f"select {services} in a project"
         )

src/kiwi/subcommands/cmd.py

@@ -7,23 +7,22 @@ from .utils.dockercommand import DockerCommand
 
 
 class CmdCommand(ProjectCommand):
+    """kiwi cmd"""
+
     def __init__(self):
         super().__init__(
             'cmd',
             description="Run raw docker-compose command in a project"
         )
 
-        # arguments for docker-compose command
+        # command string after docker-compose
         self._sub_parser.add_argument(
             'compose_cmd', metavar='cmd', type=str,
-            help="runs `docker-compose <cmd>"
+            help="runs `docker-compose <cmd>`"
         )
 
     def run(self, config, args):
-        try:
         import shlex
-            DockerCommand('docker-compose').run(config, args, shlex.split(args.compose_cmd))
 
-        except KeyboardInterrupt:
-            logging.debug("Subprocess aborted.")
-            print()
+        # run with split compose_cmd argument
+        DockerCommand('docker-compose').run(config, args, shlex.split(args.compose_cmd))

src/kiwi/subcommands/init.py

@@ -43,13 +43,13 @@ class InitCommand(SubCommand):
     def run(self, config, args):
         logging.info(f"Initializing '{KIWI_CONF_NAME}' in '{os.getcwd()}'")
 
+        # check force switch
         if args.force and os.path.isfile(KIWI_CONF_NAME):
             from ..config import DefaultConfig
 
             logging.warning(f"Overwriting existing '{KIWI_CONF_NAME}'!")
             config = DefaultConfig.get()
 
-        try:
         # version
         user_input(config, 'version', "Enter kiwi-config version for this instance")
 
@@ -65,7 +65,3 @@ class InitCommand(SubCommand):
         user_input(config, 'network:cidr', "Enter CIDR block for local docker network")
 
         config.save()
-
-        except KeyboardInterrupt:
-            print()
-            logging.warning(f"'{self}' aborted, input discarded.")

src/kiwi/subcommands/logs.py

@@ -9,7 +9,7 @@ from .utils.dockercommand import DockerCommand
 class LogsCommand(ServiceCommand):
     def __init__(self):
         super().__init__(
-            'logs',
+            'logs', nargs='*',
             description="Show logs of a project or service(s) of a project"
         )
 
@@ -20,19 +20,19 @@ class LogsCommand(ServiceCommand):
         )
 
     def run(self, config, args):
-        compose_args = ['logs', '-t']
-        if args.follow:
-            compose_args = [*compose_args, '-f', '--tail=10']
+        # 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 args.services:
-            compose_args = [*compose_args, *args.services]
+            compose_cmd = [*compose_cmd, *args.services]
 
-        try:
+        # use 'less' viewer if output will be static
         if args.follow:
-                DockerCommand('docker-compose').run(config, args, compose_args)
+            DockerCommand('docker-compose').run(config, args, compose_cmd)
         else:
-                DockerCommand('docker-compose').run_less(config, args, compose_args)
-
-        except KeyboardInterrupt:
-            logging.debug("Subprocess aborted.")
-            print()
+            DockerCommand('docker-compose').run_less(config, args, compose_cmd)

src/kiwi/subcommands/shell.py

@@ -7,26 +7,26 @@ from ._subcommand import ServiceCommand
 from .utils.dockercommand import DockerCommand
 
 
-def _service_has_shell(config, args, exec_service, try_shell):
+def _service_has_shell(config, args, compose_cmd, shell):
     try:
         # test if desired shell exists
         DockerCommand('docker-compose').run(
-            config, args, [*exec_service, '/bin/sh', '-c', f"which {try_shell}"],
+            config, args, [*compose_cmd, '/bin/sh', '-c', f"which {shell}"],
             check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL
         )
         return True
 
     except subprocess.CalledProcessError:
         # fallback
-        logging.info(f"Shell '{try_shell}' not found in container")
+        logging.info(f"Shell '{shell}' not found in container")
         return False
 
 
 class ShellCommand(ServiceCommand):
     def __init__(self):
         super().__init__(
-            'sh', 1,
-            description="Spawn shell inside project's service"
+            'sh',
+            description="Spawn shell inside a project's service"
         )
 
         # -s switch: Select shell
@@ -36,22 +36,18 @@ class ShellCommand(ServiceCommand):
         )
 
     def run(self, config, args):
-        try:
-            exec_service = ['exec', args.services[0]]
-            exec_shell = args.shell
+        compose_cmd = ['exec', args.services[0]]
+        shell = args.shell
 
-            if not _service_has_shell(config, args, exec_service, exec_shell):
+        if not _service_has_shell(config, args, compose_cmd, shell):
             # fallback
-                exec_shell = '/bin/bash'
+            shell = '/bin/bash'
 
-                if not _service_has_shell(config, args, exec_service, exec_shell):
-                    exec_shell = '/bin/sh'
+            if not _service_has_shell(config, args, compose_cmd, shell):
+                # safe fallback
+                shell = '/bin/sh'
 
         # spawn shell
         DockerCommand('docker-compose').run(
-                config, args, [*exec_service, exec_shell]
+            config, args, [*compose_cmd, shell]
         )
-
-        except KeyboardInterrupt:
-            logging.debug("Subprocess aborted.")
-            print()