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https://github.com/yavook/kiwi-cron.git
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modularity
This commit is contained in:
parent
de02c3e771
commit
965dc71dbf
7 changed files with 183 additions and 173 deletions
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@ -18,6 +18,7 @@ RUN set -ex; \
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docker-cli \
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;
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COPY kiwi-cron /usr/local/bin/
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COPY bin /usr/local/bin/
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COPY libexec /usr/local/libexec/
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CMD [ "kiwi-cron" ]
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5
bin/kiwi-cron
Executable file
5
bin/kiwi-cron
Executable file
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@ -0,0 +1,5 @@
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#!/bin/sh
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# replace crontab, run crond
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/usr/local/libexec/kiwi-cron/schedule_dirs | crontab -
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exec crond -fd 8
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172
kiwi-cron
172
kiwi-cron
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@ -1,172 +0,0 @@
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#!/bin/sh
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crontab=''
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crontab_line () {
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if [ -z "${crontab}" ]; then
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crontab="${1}"
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else
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crontab="$(
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printf '%s\n%s' "${crontab}" "${1}";
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)"
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fi
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}
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print_cron_schedule() {
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pcs_min="${1}"
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pcs_hour="${2}"
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pcs_day="${3}"
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pcs_month="${4}"
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pcs_weekday="${5}"
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pcs_command="${6}"
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printf '%-8s%-8s%-8s%-8s%-8s%s\n' \
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"${pcs_min}" "${pcs_hour}" "${pcs_day}" "${pcs_month}" "${pcs_weekday}" "${pcs_command}"
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}
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create_schedule() {
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cs_every="${1:-1}"
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cs_units="${2}"
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cs_command="${3}"
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if [ "${cs_every}" -eq 1 ]; then
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cs_every=""
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else
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cs_every="/${cs_every}"
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fi
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# generate valid random schedule values
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# generally, "nighttime" and "weekend" will be preferred.
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# shellcheck disable=SC3028
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rand_min=$(( RANDOM % 60 ))
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# shellcheck disable=SC3028
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# rand_hour=$(( RANDOM % 24 ))
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rand_hour=$(( (21 + RANDOM % 7) % 24 ))
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# shellcheck disable=SC3028
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rand_day=$(( RANDOM % 31 + 1 ))
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# shellcheck disable=SC3028
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# rand_weekday=$(( RANDOM % 7 ))
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rand_weekday=$(( (6 + RANDOM % 2) % 7 ))
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# shellcheck disable=SC3028
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# rand_month=$(( RANDOM % 12 + 1 ))
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rand_month=$(( RANDOM % 2 + 1 ))
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case "${cs_units}" in
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minute)
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print_cron_schedule \
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"*${cs_every}" "*" "*" "*" "*" "${cs_command}"
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;;
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hour)
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print_cron_schedule \
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"${rand_min}" "*${cs_every}" "*" "*" "*" "${cs_command}"
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;;
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day)
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print_cron_schedule \
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"${rand_min}" "${rand_hour}" "*${cs_every}" "*" "*" "${cs_command}"
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;;
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week)
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print_cron_schedule \
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"${rand_min}" "${rand_hour}" "*" "*" "${rand_weekday}" "${cs_command}"
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;;
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month)
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print_cron_schedule \
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"${rand_min}" "${rand_hour}" "${rand_day}" "*${cs_every}" "*" "${cs_command}"
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;;
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year)
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print_cron_schedule \
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"${rand_min}" "${rand_hour}" "${rand_day}" "${rand_month}" "*" "${cs_command}"
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;;
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esac
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}
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dir_has_no_files () {
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dhnf_directory="${1}"
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# count files in directory
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dhnf_filecount="$(
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find "${dhnf_directory}" -type f -mindepth 1 -maxdepth 1 \
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| wc -l
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)"
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# true if empty
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test "${dhnf_filecount}" -eq "0"
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}
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dir_to_unit () {
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dtu_dirname="${1}"
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case "${dtu_dirname}" in
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minute|hour|day|week|month|year)
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echo "${dtu_dirname}"
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;;
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# truncated "daily"
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dai)
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echo "day"
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;;
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# truncated "annually"
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annual)
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echo "year"
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;;
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esac
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}
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crontab_line '# crontab generated by kiwi-cron'
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crontab_line '# generation time: '"$(date)"
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crontab_line '#'
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crontab_line "$(
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print_cron_schedule \
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"# min" "hour" "day" "month" "weekday" "command"
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)"
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# check *ly dirs in "/kiwi-cron" directory
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schedule_dirs="$(
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find "/kiwi-cron" -type d -name "*ly" -mindepth 1 -maxdepth 1
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)"
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for schedule_dir in ${schedule_dirs}; do
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# ignore if no files
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if dir_has_no_files "${schedule_dir}"; then
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continue
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fi
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# infer units by directory name
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dir_name="${schedule_dir##*/}"
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units="${dir_name%ly}"
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units="$( dir_to_unit "${units}" )"
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crontab_line "$(
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create_schedule "1" "${units}" "run-parts '${schedule_dir}'"
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)"
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done
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# check dirs in "/kiwi-cron/every" directory
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every_schedule_dirs="$(
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find "/kiwi-cron/every" -type d -mindepth 1 -maxdepth 1
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)"
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for schedule_dir in ${every_schedule_dirs}; do
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# ignore if no files
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if dir_has_no_files "${schedule_dir}"; then
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continue
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fi
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# infer schedule params by directory name
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dir_name="${schedule_dir##*/}"
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every="$( echo "${dir_name}" | awk -F_ '{print $1}' )"
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units="$( echo "${dir_name}" | awk -F_ '{print $2}' )"
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units="${units%s}"
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crontab_line "$(
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create_schedule "${every}" "${units}" "run-parts '${schedule_dir}'"
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)"
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done
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# replace crontab, run crond
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echo "${crontab}" | crontab -
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exec crond -fd 8
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62
libexec/kiwi-cron/create_schedule
Executable file
62
libexec/kiwi-cron/create_schedule
Executable file
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@ -0,0 +1,62 @@
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#!/bin/sh
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this_script="$( readlink -f "${0}" )"
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this_dir="${this_script%/*}"
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cs_every="${1:-1}"
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cs_units="${2}"
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cs_command="${3}"
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if [ "${cs_every}" -eq 1 ]; then
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cs_every=""
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else
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cs_every="/${cs_every}"
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fi
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# generate valid random schedule values
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# generally, "nighttime" and "weekend" will be preferred.
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# shellcheck disable=SC3028 # RANDOM is defined in alpine's /bin/sh
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cs_rand_min=$(( RANDOM % 60 ))
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# shellcheck disable=SC3028
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# cs_rand_hour=$(( RANDOM % 24 ))
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cs_rand_hour=$(( (21 + RANDOM % 7) % 24 ))
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# shellcheck disable=SC3028
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cs_rand_day=$(( RANDOM % 31 + 1 ))
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# shellcheck disable=SC3028
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# cs_rand_weekday=$(( RANDOM % 7 ))
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cs_rand_weekday=$(( (6 + RANDOM % 2) % 7 ))
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# shellcheck disable=SC3028
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# cs_rand_month=$(( RANDOM % 12 + 1 ))
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cs_rand_month=$(( RANDOM % 2 + 1 ))
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case "${cs_units}" in
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minute)
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"${this_dir}/print_cron_schedule" \
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"*${cs_every}" "*" "*" "*" "*" "${cs_command}"
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;;
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hour)
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"${this_dir}/print_cron_schedule" \
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"${cs_rand_min}" "*${cs_every}" "*" "*" "*" "${cs_command}"
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;;
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day)
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"${this_dir}/print_cron_schedule" \
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"${cs_rand_min}" "${cs_rand_hour}" "*${cs_every}" "*" "*" "${cs_command}"
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;;
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week)
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"${this_dir}/print_cron_schedule" \
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"${cs_rand_min}" "${cs_rand_hour}" "*" "*" "${cs_rand_weekday}" "${cs_command}"
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;;
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month)
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"${this_dir}/print_cron_schedule" \
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"${cs_rand_min}" "${cs_rand_hour}" "${cs_rand_day}" "*${cs_every}" "*" "${cs_command}"
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;;
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year)
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"${this_dir}/print_cron_schedule" \
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"${cs_rand_min}" "${cs_rand_hour}" "${cs_rand_day}" "${cs_rand_month}" "*" "${cs_command}"
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;;
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esac
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11
libexec/kiwi-cron/print_cron_schedule
Executable file
11
libexec/kiwi-cron/print_cron_schedule
Executable file
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@ -0,0 +1,11 @@
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#!/bin/sh
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pcs_minute="${1}"
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pcs_hour="${2}"
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pcs_day="${3}"
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pcs_month="${4}"
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pcs_weekday="${5}"
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pcs_command="${6}"
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printf '%-8s%-8s%-8s%-8s%-8s%s\n' \
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"${pcs_minute}" "${pcs_hour}" "${pcs_day}" "${pcs_month}" "${pcs_weekday}" "${pcs_command}"
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2
libexec/kiwi-cron/print_crontab
Executable file
2
libexec/kiwi-cron/print_crontab
Executable file
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@ -0,0 +1,2 @@
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#!/bin/sh
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101
libexec/kiwi-cron/schedule_dirs
Executable file
101
libexec/kiwi-cron/schedule_dirs
Executable file
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@ -0,0 +1,101 @@
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#!/bin/sh
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this_script="$( readlink -f "${0}" )"
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this_dir="${this_script%/*}"
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crontab=''
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crontab_line () {
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if [ -z "${crontab}" ]; then
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crontab="${1}"
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else
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crontab="$(
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printf '%s\n%s' "${crontab}" "${1}";
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)"
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fi
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}
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dir_has_no_files () {
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dhnf_directory="${1}"
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# count files in directory
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dhnf_filecount="$(
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find "${dhnf_directory}" -type f -mindepth 1 -maxdepth 1 \
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| wc -l
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)"
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# true if empty
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test "${dhnf_filecount}" -eq "0"
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}
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dir_to_unit () {
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dtu_dirname="${1}"
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case "${dtu_dirname}" in
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# truncated "daily"
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dai)
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echo "day"
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;;
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# truncated "annually"
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annual)
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echo "year"
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;;
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*)
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echo "${dtu_dirname}"
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;;
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esac
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}
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crontab_line '# crontab generated by kiwi-cron'
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crontab_line '# generation time: '"$(date)"
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crontab_line '#'
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crontab_line "$(
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"${this_dir}/print_cron_schedule" \
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"# min" "hour" "day" "month" "weekday" "command"
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)"
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# check *ly dirs in "/kiwi-cron" directory
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schedule_dirs="$(
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find "/kiwi-cron" -type d -name "*ly" -mindepth 1 -maxdepth 1
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)"
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for schedule_dir in ${schedule_dirs}; do
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# ignore if no files
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if dir_has_no_files "${schedule_dir}"; then
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continue
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fi
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# infer units by directory name
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dir_name="${schedule_dir##*/}"
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units="${dir_name%ly}"
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units="$( dir_to_unit "${units}" )"
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crontab_line "$(
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"${this_dir}/create_schedule" "1" "${units}" "run-parts '${schedule_dir}'"
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)"
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done
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# check dirs in "/kiwi-cron/every" directory
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every_schedule_dirs="$(
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find "/kiwi-cron/every" -type d -mindepth 1 -maxdepth 1
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)"
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for schedule_dir in ${every_schedule_dirs}; do
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# ignore if no files
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if dir_has_no_files "${schedule_dir}"; then
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continue
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fi
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# infer schedule params by directory name
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dir_name="${schedule_dir##*/}"
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every="$( echo "${dir_name}" | awk -F_ '{print $1}' )"
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units="$( echo "${dir_name}" | awk -F_ '{print $2}' )"
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units="${units%s}"
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crontab_line "$(
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"${this_dir}/create_schedule" "${every}" "${units}" "run-parts '${schedule_dir}'"
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)"
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done
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echo "${crontab}"
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