diff --git a/build/common/worker/healthcheck.sh b/build/common/worker/healthcheck.sh new file mode 100755 index 00000000..81f5e4e7 --- /dev/null +++ b/build/common/worker/healthcheck.sh @@ -0,0 +1,27 @@ +#!/bin/bash + +# Set DB Host and port +export DB_HOST=`cat ./common_site_config.json | awk '/db_host/ { gsub(/[",]/,"",$2); print $2}' | tr -d '\n'` +export DB_PORT=`cat ./common_site_config.json | awk '/db_port/ { gsub(/[",]/,"",$2); print $2}' | tr -d '\n'` +if [[ -z "$DB_PORT" ]]; then + export DB_PORT=3306 +fi + +# Set REDIS host:port +export REDIS_CACHE=`cat ./common_site_config.json | awk '/redis_cache/ { gsub(/[",]/,"",$2); print $2}' | tr -d '\n' | sed 's|redis://||g'` +export REDIS_QUEUE=`cat ./common_site_config.json | awk '/redis_queue/ { gsub(/[",]/,"",$2); print $2}' | tr -d '\n' | sed 's|redis://||g'` +export REDIS_SOCKETIO=`cat ./common_site_config.json | awk '/redis_socketio/ { gsub(/[",]/,"",$2); print $2}' | tr -d '\n' | sed 's|redis://||g'` + +echo "Check $DB_HOST:$DB_PORT" +wait-for-it.sh $DB_HOST:$DB_PORT -t 1 +echo "Check $REDIS_CACHE" +wait-for-it.sh $REDIS_CACHE -t 1 +echo "Check $REDIS_QUEUE" +wait-for-it.sh $REDIS_QUEUE -t 1 +echo "Check $REDIS_SOCKETIO" +wait-for-it.sh $REDIS_SOCKETIO -t 1 + +if [[ "$1" = "-p" ]] || [[ "$1" = "--ping-service" ]]; then + echo "Check $2" + wait-for-it.sh $2 -t 1 +fi diff --git a/build/common/worker/wait-for-it.sh b/build/common/worker/wait-for-it.sh new file mode 100755 index 00000000..64019e8d --- /dev/null +++ b/build/common/worker/wait-for-it.sh @@ -0,0 +1,183 @@ +#!/usr/bin/env bash +# https://github.com/vishnubob/wait-for-it +# Use this script to test if a given TCP host/port are available + +WAITFORIT_cmdname=${0##*/} + +echoerr() { if [[ $WAITFORIT_QUIET -ne 1 ]]; then echo "$@" 1>&2; fi } + +usage() +{ + cat << USAGE >&2 +Usage: + $WAITFORIT_cmdname host:port [-s] [-t timeout] [-- command args] + -h HOST | --host=HOST Host or IP under test + -p PORT | --port=PORT TCP port under test + Alternatively, you specify the host and port as host:port + -s | --strict Only execute subcommand if the test succeeds + -q | --quiet Don't output any status messages + -t TIMEOUT | --timeout=TIMEOUT + Timeout in seconds, zero for no timeout + -- COMMAND ARGS Execute command with args after the test finishes +USAGE + exit 1 +} + +wait_for() +{ + if [[ $WAITFORIT_TIMEOUT -gt 0 ]]; then + echoerr "$WAITFORIT_cmdname: waiting $WAITFORIT_TIMEOUT seconds for $WAITFORIT_HOST:$WAITFORIT_PORT" + else + echoerr "$WAITFORIT_cmdname: waiting for $WAITFORIT_HOST:$WAITFORIT_PORT without a timeout" + fi + WAITFORIT_start_ts=$(date +%s) + while : + do + if [[ $WAITFORIT_ISBUSY -eq 1 ]]; then + nc -z $WAITFORIT_HOST $WAITFORIT_PORT + WAITFORIT_result=$? + else + (echo -n > /dev/tcp/$WAITFORIT_HOST/$WAITFORIT_PORT) >/dev/null 2>&1 + WAITFORIT_result=$? + fi + if [[ $WAITFORIT_result -eq 0 ]]; then + WAITFORIT_end_ts=$(date +%s) + echoerr "$WAITFORIT_cmdname: $WAITFORIT_HOST:$WAITFORIT_PORT is available after $((WAITFORIT_end_ts - WAITFORIT_start_ts)) seconds" + break + fi + sleep 1 + done + return $WAITFORIT_result +} + +wait_for_wrapper() +{ + # In order to support SIGINT during timeout: http://unix.stackexchange.com/a/57692 + if [[ $WAITFORIT_QUIET -eq 1 ]]; then + timeout $WAITFORIT_BUSYTIMEFLAG $WAITFORIT_TIMEOUT $0 --quiet --child --host=$WAITFORIT_HOST --port=$WAITFORIT_PORT --timeout=$WAITFORIT_TIMEOUT & + else + timeout $WAITFORIT_BUSYTIMEFLAG $WAITFORIT_TIMEOUT $0 --child --host=$WAITFORIT_HOST --port=$WAITFORIT_PORT --timeout=$WAITFORIT_TIMEOUT & + fi + WAITFORIT_PID=$! + trap "kill -INT -$WAITFORIT_PID" INT + wait $WAITFORIT_PID + WAITFORIT_RESULT=$? + if [[ $WAITFORIT_RESULT -ne 0 ]]; then + echoerr "$WAITFORIT_cmdname: timeout occurred after waiting $WAITFORIT_TIMEOUT seconds for $WAITFORIT_HOST:$WAITFORIT_PORT" + fi + return $WAITFORIT_RESULT +} + +# process arguments +while [[ $# -gt 0 ]] +do + case "$1" in + *:* ) + WAITFORIT_hostport=(${1//:/ }) + WAITFORIT_HOST=${WAITFORIT_hostport[0]} + WAITFORIT_PORT=${WAITFORIT_hostport[1]} + shift 1 + ;; + --child) + WAITFORIT_CHILD=1 + shift 1 + ;; + -q | --quiet) + WAITFORIT_QUIET=1 + shift 1 + ;; + -s | --strict) + WAITFORIT_STRICT=1 + shift 1 + ;; + -h) + WAITFORIT_HOST="$2" + if [[ $WAITFORIT_HOST == "" ]]; then break; fi + shift 2 + ;; + --host=*) + WAITFORIT_HOST="${1#*=}" + shift 1 + ;; + -p) + WAITFORIT_PORT="$2" + if [[ $WAITFORIT_PORT == "" ]]; then break; fi + shift 2 + ;; + --port=*) + WAITFORIT_PORT="${1#*=}" + shift 1 + ;; + -t) + WAITFORIT_TIMEOUT="$2" + if [[ $WAITFORIT_TIMEOUT == "" ]]; then break; fi + shift 2 + ;; + --timeout=*) + WAITFORIT_TIMEOUT="${1#*=}" + shift 1 + ;; + --) + shift + WAITFORIT_CLI=("$@") + break + ;; + --help) + usage + ;; + *) + echoerr "Unknown argument: $1" + usage + ;; + esac +done + +if [[ "$WAITFORIT_HOST" == "" || "$WAITFORIT_PORT" == "" ]]; then + echoerr "Error: you need to provide a host and port to test." + usage +fi + +WAITFORIT_TIMEOUT=${WAITFORIT_TIMEOUT:-15} +WAITFORIT_STRICT=${WAITFORIT_STRICT:-0} +WAITFORIT_CHILD=${WAITFORIT_CHILD:-0} +WAITFORIT_QUIET=${WAITFORIT_QUIET:-0} + +# Check to see if timeout is from busybox? +WAITFORIT_TIMEOUT_PATH=$(type -p timeout) +WAITFORIT_TIMEOUT_PATH=$(realpath $WAITFORIT_TIMEOUT_PATH 2>/dev/null || readlink -f $WAITFORIT_TIMEOUT_PATH) + +WAITFORIT_BUSYTIMEFLAG="" +if [[ $WAITFORIT_TIMEOUT_PATH =~ "busybox" ]]; then + WAITFORIT_ISBUSY=1 + # Check if busybox timeout uses -t flag + # (recent Alpine versions don't support -t anymore) + if timeout &>/dev/stdout | grep -q -e '-t '; then + WAITFORIT_BUSYTIMEFLAG="-t" + fi +else + WAITFORIT_ISBUSY=0 +fi + +if [[ $WAITFORIT_CHILD -gt 0 ]]; then + wait_for + WAITFORIT_RESULT=$? + exit $WAITFORIT_RESULT +else + if [[ $WAITFORIT_TIMEOUT -gt 0 ]]; then + wait_for_wrapper + WAITFORIT_RESULT=$? + else + wait_for + WAITFORIT_RESULT=$? + fi +fi + +if [[ $WAITFORIT_CLI != "" ]]; then + if [[ $WAITFORIT_RESULT -ne 0 && $WAITFORIT_STRICT -eq 1 ]]; then + echoerr "$WAITFORIT_cmdname: strict mode, refusing to execute subprocess" + exit $WAITFORIT_RESULT + fi + exec "${WAITFORIT_CLI[@]}" +else + exit $WAITFORIT_RESULT +fi diff --git a/build/frappe-worker/Dockerfile b/build/frappe-worker/Dockerfile index 27d77cfc..cff8d8e9 100644 --- a/build/frappe-worker/Dockerfile +++ b/build/frappe-worker/Dockerfile @@ -58,6 +58,8 @@ COPY build/common/commands/* /home/frappe/frappe-bench/commands/ COPY build/common/common_site_config.json.template /opt/frappe/common_site_config.json.template COPY build/common/worker/install_app.sh /usr/local/bin/install_app COPY build/common/worker/bench /usr/local/bin/bench +COPY build/common/worker/wait-for-it.sh /usr/local/bin/wait-for-it.sh +COPY build/common/worker/healthcheck.sh /usr/local/bin/healthcheck.sh # Setup docker-entrypoint COPY build/common/worker/docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh