From 3e6c948df89cf0d97882243e41fe44e78c5afdde Mon Sep 17 00:00:00 2001 From: Shawn Sorichetti Date: Wed, 20 Mar 2019 16:49:53 -0400 Subject: [PATCH] Add wait-for-it.sh script to container The script to wait for the database server to be up needs to be included as part of the container in order for it to be executed. This change adds the script and copies it into position within the container. --- Dockerfile | 3 +- wait-for-it.sh | 202 +++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 204 insertions(+), 1 deletion(-) create mode 100755 wait-for-it.sh diff --git a/Dockerfile b/Dockerfile index e5874307c..a7c421c62 100644 --- a/Dockerfile +++ b/Dockerfile @@ -2,6 +2,7 @@ FROM perl:5.22 ENV PERL_MM_USE_DEFAULT=1 PERL_CARTON_PATH=/carton +COPY wait-for-it.sh / COPY cpanfile cpanfile.snapshot /metacpan-api/ WORKDIR /metacpan-api @@ -24,4 +25,4 @@ USER metacpan-api:users EXPOSE 5000 -CMD [ "./wait-for-it.sh", "db:5432", "carton", "exec", "morbo", "-l", "http://*:5000", "-w", "root", "./bin/api.pl"] +CMD [ "/wait-for-it.sh", "db:5432", "--", "carton", "exec", "morbo", "-l", "http://*:5000", "-w", "root", "./bin/api.pl"] diff --git a/wait-for-it.sh b/wait-for-it.sh new file mode 100755 index 000000000..33e0d0e00 --- /dev/null +++ b/wait-for-it.sh @@ -0,0 +1,202 @@ +#!/bin/bash +# +# See https://github.com/vishnubob/wait-for-it +# +# The MIT License (MIT) +# Copyright (c) 2016 Giles Hall + +# Permission is hereby granted, free of charge, to any person obtaining a copy of +# this software and associated documentation files (the "Software"), to deal in +# the Software without restriction, including without limitation the rights to +# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +# of the Software, and to permit persons to whom the Software is furnished to do +# so, subject to the following conditions: + +# The above copyright notice and this permission notice shall be included in all +# copies or substantial portions of the Software. + +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +# SOFTWARE. + +#!/usr/bin/env bash +# Use this script to test if a given TCP host/port are available + +cmdname=$(basename $0) + +echoerr() { if [[ $QUIET -ne 1 ]]; then echo "$@" 1>&2; fi } + +usage() +{ + cat << USAGE >&2 +Usage: + $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 [[ $TIMEOUT -gt 0 ]]; then + echoerr "$cmdname: waiting $TIMEOUT seconds for $HOST:$PORT" + else + echoerr "$cmdname: waiting for $HOST:$PORT without a timeout" + fi + start_ts=$(date +%s) + while : + do + if [[ $ISBUSY -eq 1 ]]; then + nc -z $HOST $PORT + result=$? + else + (echo > /dev/tcp/$HOST/$PORT) >/dev/null 2>&1 + result=$? + fi + if [[ $result -eq 0 ]]; then + end_ts=$(date +%s) + echoerr "$cmdname: $HOST:$PORT is available after $((end_ts - start_ts)) seconds" + break + fi + sleep 1 + done + return $result +} + +wait_for_wrapper() +{ + # In order to support SIGINT during timeout: http://unix.stackexchange.com/a/57692 + if [[ $QUIET -eq 1 ]]; then + timeout $BUSYTIMEFLAG $TIMEOUT $0 --quiet --child --host=$HOST --port=$PORT --timeout=$TIMEOUT & + else + timeout $BUSYTIMEFLAG $TIMEOUT $0 --child --host=$HOST --port=$PORT --timeout=$TIMEOUT & + fi + PID=$! + trap "kill -INT -$PID" INT + wait $PID + RESULT=$? + if [[ $RESULT -ne 0 ]]; then + echoerr "$cmdname: timeout occurred after waiting $TIMEOUT seconds for $HOST:$PORT" + fi + return $RESULT +} + +# process arguments +while [[ $# -gt 0 ]] +do + case "$1" in + *:* ) + hostport=(${1//:/ }) + HOST=${hostport[0]} + PORT=${hostport[1]} + shift 1 + ;; + --child) + CHILD=1 + shift 1 + ;; + -q | --quiet) + QUIET=1 + shift 1 + ;; + -s | --strict) + STRICT=1 + shift 1 + ;; + -h) + HOST="$2" + if [[ $HOST == "" ]]; then break; fi + shift 2 + ;; + --host=*) + HOST="${1#*=}" + shift 1 + ;; + -p) + PORT="$2" + if [[ $PORT == "" ]]; then break; fi + shift 2 + ;; + --port=*) + PORT="${1#*=}" + shift 1 + ;; + -t) + TIMEOUT="$2" + if [[ $TIMEOUT == "" ]]; then break; fi + shift 2 + ;; + --timeout=*) + TIMEOUT="${1#*=}" + shift 1 + ;; + --) + shift + CLI=("$@") + break + ;; + --help) + usage + ;; + *) + echoerr "Unknown argument: $1" + usage + ;; + esac +done + +if [[ "$HOST" == "" || "$PORT" == "" ]]; then + echoerr "Error: you need to provide a host and port to test." + usage +fi + +TIMEOUT=${TIMEOUT:-15} +STRICT=${STRICT:-0} +CHILD=${CHILD:-0} +QUIET=${QUIET:-0} + +# check to see if timeout is from busybox? +# check to see if timeout is from busybox? +TIMEOUT_PATH=$(realpath $(which timeout)) +if [[ $TIMEOUT_PATH =~ "busybox" ]]; then + ISBUSY=1 + BUSYTIMEFLAG="-t" +else + ISBUSY=0 + BUSYTIMEFLAG="" +fi + +if [[ $CHILD -gt 0 ]]; then + wait_for + RESULT=$? + exit $RESULT +else + if [[ $TIMEOUT -gt 0 ]]; then + wait_for_wrapper + RESULT=$? + else + wait_for + RESULT=$? + fi +fi + +if [[ $CLI != "" ]]; then + if [[ $RESULT -ne 0 && $STRICT -eq 1 ]]; then + echoerr "$cmdname: strict mode, refusing to execute subprocess" + exit $RESULT + fi + exec "${CLI[@]}" +else + exit $RESULT +fi