mirror of
https://github.com/willfarrell/docker-crontab.git
synced 2025-04-19 12:49:48 +02:00
Robert Wlodarczyk
GitHub
commit
2b1c20967d
@ -1,4 +1,4 @@
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FROM alpine:3.12 as rq-build
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FROM alpine:3.16 as rq-build
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ENV RQ_VERSION=1.0.2
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WORKDIR /root/
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@ -1,12 +1,24 @@
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#!/usr/bin/env bash
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set -e
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if [ -z "$DOCKER_HOST" -a "$DOCKER_PORT_2375_TCP" ]; then
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DOCKER_SOCK=/var/run/docker.sock
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CRONTAB_FILE=/etc/crontabs/docker
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# For local testing only.
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#HOME_DIR=.
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if [ -z "${HOME_DIR}" ]; then
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echo "HOME_DIR not set."
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exit 1
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fi
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# Ensure dir exist - in case of volume mapping.
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mkdir -p "${HOME_DIR}"/jobs "${HOME_DIR}"/projects
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if [ -z "${DOCKER_HOST}" ] && [ -a "${DOCKER_PORT_2375_TCP}" ]; then
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export DOCKER_HOST='tcp://docker:2375'
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fi
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# for local testing only
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#HOME_DIR=.
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if [ "${LOG_FILE}" == "" ]; then
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LOG_DIR=/var/log/crontab
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@ -15,88 +27,80 @@ if [ "${LOG_FILE}" == "" ]; then
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touch ${LOG_FILE}
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fi
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get_config() {
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normalize_config() {
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JSON_CONFIG={}
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if [ -f "${HOME_DIR}/config.json" ]; then
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jq 'map(.)' ${HOME_DIR}/config.json > ${HOME_DIR}/config.working.json
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JSON_CONFIG="$(cat "${HOME_DIR}"/config.json)"
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elif [ -f "${HOME_DIR}/config.toml" ]; then
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rq -t <<< $(cat ${HOME_DIR}/config.toml) | jq 'map(.)' > ${HOME_DIR}/config.json
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JSON_CONFIG="$(rq -t <<< "$(cat "${HOME_DIR}"/config.toml)")"
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elif [ -f "${HOME_DIR}/config.yml" ]; then
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rq -y <<< $(cat ${HOME_DIR}/config.yml) | jq 'map(.)' > ${HOME_DIR}/config.json
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JSON_CONFIG="$(rq -y <<< "$(cat "${HOME_DIR}"/config.yml)")"
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elif [ -f "${HOME_DIR}/config.yaml" ]; then
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rq -y <<< $(cat ${HOME_DIR}/config.yaml) | jq 'map(.)' > ${HOME_DIR}/config.json
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JSON_CONFIG="$(rq -y <<< "$(cat "${HOME_DIR}"/config.yaml)")"
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fi
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jq 'map(.)' "${JSON_CONFIG}" > "${HOME_DIR}"/config.working.json
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}
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DOCKER_SOCK=/var/run/docker.sock
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CRONTAB_FILE=/etc/crontabs/docker
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# Ensure dir exist - in case of volume mapping
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mkdir -p ${HOME_DIR}/jobs ${HOME_DIR}/projects
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ensure_docker_socket_accessible() {
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if ! grep -q "^docker:" /etc/group; then
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# Ensure 'docker' user has permissions for docker socket (without changing permissions)
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# Ensure 'docker' user has permissions for docker socket (without changing permissions).
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DOCKER_GID=$(stat -c '%g' ${DOCKER_SOCK})
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if [ "${DOCKER_GID}" != "0" ]; then
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if ! grep -qE "^[^:]+:[^:]+:${DOCKER_GID}:" /etc/group; then
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# No group with such gid exists - create group docker
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addgroup -g ${DOCKER_GID} docker
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# No group with such gid exists - create group docker.
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addgroup -g "${DOCKER_GID}" docker
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adduser docker docker
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else
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# Group with such gid exists - add user "docker" to this group
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DOCKER_GROUP_NAME=`getent group "${DOCKER_GID}" | awk -F':' '{{ print $1 }}'`
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adduser docker $DOCKER_GROUP_NAME
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# Group with such gid exists - add user "docker" to this group.
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DOCKER_GROUP_NAME=$(getent group "${DOCKER_GID}" | awk -F':' '{{ print $1 }}')
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adduser docker "${DOCKER_GROUP_NAME}"
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fi
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else
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# Docker socket belongs to "root" group - add user "docker" to this group
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# Docker socket belongs to "root" group - add user "docker" to this group.
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adduser docker root
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fi
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fi
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}
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slugify() {
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echo "$@" | iconv -t ascii | sed -r s/[~\^]+//g | sed -r s/[^a-zA-Z0-9]+/-/g | sed -r s/^-+\|-+$//g | tr A-Z a-z
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echo "${@}" | iconv -t ascii | sed -r s/[~^]+//g | sed -r s/[^a-zA-Z0-9]+/-/g | sed -r s/^-+\|-+$//g | tr '[:upper:]' '[:lower:]'
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}
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make_image_cmd() {
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DOCKERARGS=$(echo ${1} | jq -r .dockerargs)
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VOLUMES=$(echo ${1} | jq -r '.volumes | map(" -v " + .) | join("")')
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PORTS=$(echo ${1} | jq -r '.ports | map(" -p " + .) | join("")')
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EXPOSE=$(echo ${1} | jq -r '.expose | map(" --expose " + .) | join("")')
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# We'll add name in, if it exists
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NAME=$(echo ${1} | jq -r 'select(.name != null) | .name')
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NETWORK=$(echo ${1} | jq -r 'select(.network != null) | .network')
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ENVIRONMENT=$(echo ${1} | jq -r '.environment | map(" -e " + .) | join("")')
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# echo ${1} | jq -r '.environment | join("\n")' > ${PWD}/${NAME}.env
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# ENVIRONMENT=" --env-file ${PWD}/${NAME}.env"
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DOCKERARGS=$(echo "${1}" | jq -r .dockerargs)
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VOLUMES=$(echo "${1}" | jq -r '.volumes | map(" -v " + .) | join("")')
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PORTS=$(echo "${1}" | jq -r '.ports | map(" -p " + .) | join("")')
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EXPOSE=$(echo "${1}" | jq -r '.expose | map(" --expose " + .) | join("")')
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NAME=$(echo "${1}" | jq -r 'select(.name != null) | .name')
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NETWORK=$(echo "${1}" | jq -r 'select(.network != null) | .network')
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ENVIRONMENT=$(echo "${1}" | jq -r '.environment | map(" -e " + .) | join("")')
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if [ "${DOCKERARGS}" == "null" ]; then DOCKERARGS=; fi
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if [ ! -z "${NAME}" ]; then DOCKERARGS="${DOCKERARGS} --rm --name ${NAME} "; fi
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if [ ! -z "${NETWORK}" ]; then DOCKERARGS="${DOCKERARGS} --network ${NETWORK} "; fi
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if [ ! -z "${VOLUMES}" ]; then DOCKERARGS="${DOCKERARGS}${VOLUMES}"; fi
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if [ ! -z "${ENVIRONMENT}" ]; then DOCKERARGS="${DOCKERARGS}${ENVIRONMENT}"; fi
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if [ ! -z "${PORTS}" ]; then DOCKERARGS="${DOCKERARGS}${PORTS}"; fi
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if [ ! -z "${EXPOSE}" ]; then DOCKERARGS="${DOCKERARGS}${EXPOSE}"; fi
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IMAGE=$(echo ${1} | jq -r .image | envsubst)
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TMP_COMMAND=$(echo ${1} | jq -r .command)
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if [ -n "${NAME}" ]; then DOCKERARGS="${DOCKERARGS} --rm --name ${NAME} "; fi
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if [ -n "${NETWORK}" ]; then DOCKERARGS="${DOCKERARGS} --network ${NETWORK} "; fi
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if [ -n "${VOLUMES}" ]; then DOCKERARGS="${DOCKERARGS}${VOLUMES}"; fi
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if [ -n "${ENVIRONMENT}" ]; then DOCKERARGS="${DOCKERARGS}${ENVIRONMENT}"; fi
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if [ -n "${PORTS}" ]; then DOCKERARGS="${DOCKERARGS}${PORTS}"; fi
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if [ -n "${EXPOSE}" ]; then DOCKERARGS="${DOCKERARGS}${EXPOSE}"; fi
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IMAGE=$(echo "${1}" | jq -r .image | envsubst)
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TMP_COMMAND=$(echo "${1}" | jq -r .command)
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echo "docker run ${DOCKERARGS} ${IMAGE} ${TMP_COMMAND}"
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}
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make_container_cmd() {
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DOCKERARGS=$(echo ${1} | jq -r .dockerargs)
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DOCKERARGS=$(echo "${1}" | jq -r .dockerargs)
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if [ "${DOCKERARGS}" == "null" ]; then DOCKERARGS=; fi
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SCRIPT_NAME=$(echo ${1} | jq -r .name)
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SCRIPT_NAME=$(slugify $SCRIPT_NAME)
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PROJECT=$(echo ${1} | jq -r .project)
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CONTAINER=$(echo ${1} | jq -r .container | envsubst)
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TMP_COMMAND=$(echo ${1} | jq -r .command)
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SCRIPT_NAME=$(echo "${1}" | jq -r .name)
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SCRIPT_NAME=$(slugify "${SCRIPT_NAME}")
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PROJECT=$(echo "${1}" | jq -r .project)
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CONTAINER=$(echo "${1}" | jq -r .container | envsubst)
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TMP_COMMAND=$(echo "${1}" | jq -r .command)
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if [ "${PROJECT}" != "null" ]; then
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# create bash script to detect all running containers
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# Create bash script to detect all running containers.
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if [ "${SCRIPT_NAME}" == "null" ]; then
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SCRIPT_NAME=$(cat /proc/sys/kernel/random/uuid)
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fi
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cat << EOF > ${HOME_DIR}/projects/${SCRIPT_NAME}.sh
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cat << EOF > "${HOME_DIR}"/projects/"${SCRIPT_NAME}".sh
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#!/usr/bin/env bash
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set -e
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@ -106,7 +110,6 @@ for CONTAINER_NAME in \$CONTAINERS; do
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done
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EOF
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echo "/bin/bash ${HOME_DIR}/projects/${SCRIPT_NAME}.sh"
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# cat "/bin/bash ${HOME_DIR}/projects/${SCRIPT_NAME}.sh"
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else
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echo "docker exec ${DOCKERARGS} ${CONTAINER} ${TMP_COMMAND}"
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fi
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@ -119,14 +122,14 @@ EOF
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#}
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make_cmd() {
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if [ "$(echo ${1} | jq -r .image)" != "null" ]; then
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make_image_cmd "$1"
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elif [ "$(echo ${1} | jq -r .container)" != "null" ]; then
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make_container_cmd "$1"
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if [ "$(echo "${1}" | jq -r .image)" != "null" ]; then
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make_image_cmd "${1}"
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elif [ "$(echo "${1}" | jq -r .container)" != "null" ]; then
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make_container_cmd "${1}"
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#elif [ "$(echo ${1} | jq -r .host)" != "null" ]; then
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# make_host_cmd "$1"
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# make_host_cmd "${1}"
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else
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echo ${1} | jq -r .command
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echo "${1}" | jq -r .command
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fi
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}
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@ -157,18 +160,18 @@ parse_schedule() {
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TIME=$2
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TOTAL=0
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M=$(echo $TIME | grep -o '[0-9]\+m')
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H=$(echo $TIME | grep -o '[0-9]\+h')
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D=$(echo $TIME | grep -o '[0-9]\+d')
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M=$(echo "${TIME}" | grep -o '[0-9]\+m')
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H=$(echo "${TIME}" | grep -o '[0-9]\+h')
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D=$(echo "${TIME}" | grep -o '[0-9]\+d')
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if [ -n "${M}" ]; then
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TOTAL=$(($TOTAL + ${M::-1}))
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TOTAL=$((TOTAL + ${M::-1}))
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fi
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if [ -n "${H}" ]; then
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TOTAL=$(($TOTAL + ${H::-1} * 60))
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TOTAL=$((TOTAL + ${H::-1} * 60))
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fi
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if [ -n "${D}" ]; then
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TOTAL=$(($TOTAL + ${D::-1} * 60 * 24))
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TOTAL=$((TOTAL + ${D::-1} * 60 * 24))
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fi
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echo "*/${TOTAL} * * * *"
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@ -180,73 +183,64 @@ parse_schedule() {
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}
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function build_crontab() {
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rm -rf ${CRONTAB_FILE}
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ONSTART=()
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while read i ; do
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while read -r i ; do
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SCHEDULE=$(jq -r .[$i].schedule ${CONFIG} | sed 's/\*/\\*/g')
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SCHEDULE=$(jq -r .["$i"].schedule "${CONFIG}" | sed 's/\*/\\*/g')
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if [ "${SCHEDULE}" == "null" ]; then
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echo "Schedule Missing: $(jq -r .[$i].schedule ${CONFIG})"
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echo "Schedule Missing: $(jq -r .["$i"].schedule "${CONFIG}")"
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continue
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fi
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SCHEDULE=$(parse_schedule ${SCHEDULE} | sed 's/\\//g')
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SCHEDULE=$(parse_schedule "${SCHEDULE}" | sed 's/\\//g')
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if [ "$(jq -r .[$i].command ${CONFIG})" == "null" ]; then
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echo "Command Missing: $(jq -r .[$i].command ${CONFIG})"
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COMMAND=$(jq -r .["$i"].command "${CONFIG}")
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if [ "${COMMAND}" == "null" ]; then
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echo "Command Missing: '${COMMAND}'"
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continue
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fi
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COMMENT=$(jq -r .[$i].comment ${CONFIG})
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COMMENT=$(jq -r .["$i"].comment "${CONFIG}")
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if [ "${COMMENT}" != "null" ]; then
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echo "# ${COMMENT}" >> ${CRONTAB_FILE}
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fi
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SCRIPT_NAME=$(jq -r .[$i].name ${CONFIG})
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SCRIPT_NAME=$(slugify $SCRIPT_NAME)
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SCRIPT_NAME=$(jq -r .["$i"].name "${CONFIG}")
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SCRIPT_NAME=$(slugify "${SCRIPT_NAME}")
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if [ "${SCRIPT_NAME}" == "null" ]; then
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SCRIPT_NAME=$(cat /proc/sys/kernel/random/uuid)
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fi
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COMMAND="/bin/bash ${HOME_DIR}/jobs/${SCRIPT_NAME}.sh"
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cat << EOF > ${HOME_DIR}/jobs/${SCRIPT_NAME}.sh
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cat << EOF > "${HOME_DIR}"/jobs/"${SCRIPT_NAME}".sh
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#!/usr/bin/env bash
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set -e
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# TODO find workaround
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# [error] write /dev/stdout: broken pipe <- when using docker commands
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#UUID=\$(cat /proc/sys/kernel/random/uuid)
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#exec > >(read message; echo "\${UUID} \$(date -Iseconds) [info] \$message" | tee -a ${LOG_FILE} )
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#exec 2> >(read message; echo "\${UUID} \$(date -Iseconds) [error] \$message" | tee -a ${LOG_FILE} >&2)
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echo "Start Cronjob **${SCRIPT_NAME}** ${COMMENT}"
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$(make_cmd "$(jq -c .[$i] ${CONFIG})")
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$(make_cmd "$(jq -c .["$i"] "${CONFIG}")")
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EOF
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if [ "$(jq -r .[$i].trigger ${CONFIG})" != "null" ]; then
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while read j ; do
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if [ "$(jq .[$i].trigger[$j].command ${CONFIG})" == "null" ]; then
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echo "Command Missing: $(jq -r .[$i].trigger[$j].command ${CONFIG})"
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TRIGGER=$(jq -r .["$i"].trigger "${CONFIG}")
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if [ "${TRIGGER}" != "null" ]; then
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while read -r j ; do
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TRIGGER_COMMAND=$(jq .["$i"].trigger["$j"].command "${CONFIG}")
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if [ "${TRIGGER_COMMAND}" == "null" ]; then
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echo "Command Missing: '${TRIGGER_COMMAND}'"
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continue
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fi
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#TRIGGER_COMMAND=$(make_cmd "$(jq -c .[$i].trigger[$j] ${CONFIG})")
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echo "$(make_cmd "$(jq -c .[$i].trigger[$j] ${CONFIG})")" >> ${HOME_DIR}/jobs/${SCRIPT_NAME}.sh
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#COMMAND="${COMMAND} && ${TRIGGER_COMMAND}"
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done < <(jq -r '.['$i'].trigger|keys[]' ${CONFIG})
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make_cmd "${TRIGGER_COMMAND}" >> "${HOME_DIR}"/jobs/"${SCRIPT_NAME}".sh
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done < <(jq -r '.['"$i"'].trigger|keys[]' "${CONFIG}")
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fi
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echo "echo \"End Cronjob **${SCRIPT_NAME}** ${COMMENT}\"" >> ${HOME_DIR}/jobs/${SCRIPT_NAME}.sh
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echo "echo \"End Cronjob **${SCRIPT_NAME}** ${COMMENT}\"" >> "${HOME_DIR}"/jobs/"${SCRIPT_NAME}".sh
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echo "${SCHEDULE} ${COMMAND}" >> ${CRONTAB_FILE}
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if [ "$(jq -r .[$i].onstart ${CONFIG})" == "true" ]; then
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if [ "$(jq -r .["$i"].onstart "${CONFIG}")" == "true" ]; then
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ONSTART+=("${COMMAND}")
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fi
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done < <(jq -r '.|keys[]' ${CONFIG})
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done < <(jq -r '.|keys[]' "${CONFIG}")
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echo "##### crontab generation complete #####"
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cat ${CRONTAB_FILE}
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@ -258,27 +252,19 @@ EOF
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done
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}
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ensure_docker_socket_accessible
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start_app() {
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get_config
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if [ -f "${HOME_DIR}/config.working.json" ]; then
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export CONFIG=${HOME_DIR}/config.working.json
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elif [ -f "${HOME_DIR}/config.json" ]; then
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export CONFIG=${HOME_DIR}/config.json
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else
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echo "NO CONFIG FILE FOUND"
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normalize_config
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export CONFIG=${HOME_DIR}/config.working.json
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if [ ! -f "${CONFIG}" ]; then
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echo "Unable to find ${CONFIG}."
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exit 1
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fi
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if [ "$1" = "crond" ]; then
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if [ -f ${CONFIG} ]; then
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build_crontab
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else
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echo "Unable to find ${CONFIG}"
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fi
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if [ "${1}" == "crond" ]; then
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build_crontab
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fi
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echo "$@"
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exec "$@"
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echo "${@}"
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exec "${@}"
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}
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start_app "$@"
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ensure_docker_socket_accessible
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start_app "${@}"
|
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|
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