Files
dokku/plugins/scheduler-docker-local/pre-deploy
Jose Diaz-Gonzalez ef490f0a05 feat: retire intermediate containers after use
Rather than waiting for the next deploy, take advantage of the retire system to retire these containers immediately.

Note that since the retire process happens out of band, the containers may stick around for up to 5 minutes, after which point they will be removed.

Customization of the wait time to retire - currently 60 seconds - is up for future debate. The containers ultimately haven't been useful for debugging, so keeping them around for longer won't help in most cases, and folks can disable the dokku-retire service (or cron) if that is desired.
2020-11-22 16:57:39 -05:00

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#!/usr/bin/env bash
set -eo pipefail
[[ $DOKKU_TRACE ]] && set -x
source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
source "$PLUGIN_CORE_AVAILABLE_PATH/common/property-functions"
source "$PLUGIN_AVAILABLE_PATH/config/functions"
trigger-scheduler-docker-local-pre-deploy() {
declare desc="scheduler-docker-local pre-deploy plugin trigger"
declare trigger="pre-deploy"
declare APP="$1" IMAGE_TAG="$2"
local DOKKU_SCHEDULER=$(get_app_scheduler "$APP")
if [[ "$DOKKU_SCHEDULER" != "docker-local" ]]; then
return
fi
scheduler-docker-local-pre-deploy-chown-app "$APP" "$IMAGE_TAG"
scheduler-docker-local-pre-deploy-precheck "$APP" "$IMAGE_TAG"
}
scheduler-docker-local-pre-deploy-chown-app() {
declare desc="Runs chown against the /app directory for herokuish images"
declare APP="$1" IMAGE_TAG="$2"
local DOCKER_RUN_LABEL_ARGS="--label=com.dokku.app-name=$APP"
local IMAGE DISABLE_CHOWN DOCKER_ARGS DOKKU_APP_TYPE DOKKU_APP_USER APP_PATHS CONTAINER_PATHS
declare -a ARG_ARRAY
IMAGE=$(get_app_image_name "$APP" "$IMAGE_TAG")
DOKKU_APP_TYPE=$(config_get "$APP" DOKKU_APP_TYPE || true)
DOKKU_APP_USER=$(config_get "$APP" DOKKU_APP_USER || true)
DOKKU_APP_USER=${DOKKU_APP_USER:="herokuishuser"}
APP_PATHS=$(dokku --quiet storage:list "$APP" || true)
if [[ -n "$APP_PATHS" ]]; then
CONTAINER_PATHS=$(echo "$APP_PATHS" | awk -F ':' '{ print $2 }' | xargs)
DOCKER_ARGS=$(: | plugn trigger docker-args-deploy "$APP" "$IMAGE_TAG")
# strip --restart args from DOCKER_ARGS
DOCKER_ARGS=$(sed -e "s/--restart=[[:graph:]]\+[[:blank:]]\?//g" <<<"$DOCKER_ARGS")
eval "ARG_ARRAY=($DOCKER_ARGS)"
fi
if [[ "$DOKKU_APP_TYPE" != "herokuish" ]] || [[ -z "$CONTAINER_PATHS" ]]; then
return
fi
DISABLE_CHOWN="$(fn-plugin-property-get "scheduler-docker-local" "$APP" "disable-chown" "")"
if [[ "$DISABLE_CHOWN" == "true" ]]; then
return
fi
# shellcheck disable=SC2086
"$DOCKER_BIN" container run --rm "${DOCKER_RUN_LABEL_ARGS[@]}" $DOKKU_GLOBAL_RUN_ARGS "${ARG_ARRAY[@]}" $IMAGE /bin/bash -c "find $CONTAINER_PATHS -not -user $DOKKU_APP_USER -print0 | xargs -0 -r chown -R $DOKKU_APP_USER" || true
}
scheduler-docker-local-pre-deploy-precheck() {
declare desc="Outputs the checks messages if necessary"
declare APP="$1" IMAGE_TAG="$2"
local IMAGE=$(get_deploying_app_image_name "$APP" "$IMAGE_TAG")
local CHECKS_FILE=$(mktemp "/tmp/dokku-${DOKKU_PID}-${FUNCNAME[0]}.XXXXXX")
trap "rm -rf '$CHECKS_FILE' >/dev/null" RETURN INT TERM
copy_from_image "$IMAGE" "CHECKS" "$CHECKS_FILE" 2>/dev/null || true
dokku_log_info2 "Processing deployment checks"
if [[ ! -s "${CHECKS_FILE}" ]]; then
local CHECKS_URL="${DOKKU_CHECKS_URL:-http://dokku.viewdocs.io/dokku/deployment/zero-downtime-deploys/}"
dokku_log_verbose "No CHECKS file found. Simple container checks will be performed."
dokku_log_verbose "For more efficient zero downtime deployments, create a CHECKS file. See ${CHECKS_URL} for examples"
fi
}
trigger-scheduler-docker-local-pre-deploy "$@"