Wercker trigger script

wercker-trigger.sh

#!/bin/bash -e

trap 'echo "ERROR: Error occurred at ${BASH_SOURCE}:${LINENO} command: ${BASH_COMMAND}"' ERR
set -eo pipefail

usage(){
    echo ""
    echo "Usage: `basename ${0}` [OPTIONS] --owner=OWNER --app-name=APP_NAME --branch=BRANCH --pipeline=PIPELINE..."
    echo ""
    echo "Trigger wercker job(s)."
    echo ""
    echo "OWNER: Wercker username or organization (e.g. helidon)"
    echo "APP_NAME: Wercker application name (e.g. helidon-site, helidon-build-tools, helidon)"
    echo "BRANCH: Branch to trigger the job(s) against"
    echo "PIPELINE: name of a pipeline to trigger"
    echo ""
    echo "OPTIONS:"
    echo "  --help print the usage and exit"
    echo "  --debug enable debug output"
    echo ""
    echo "ENVIRONMENT:"
    echo "  WERCKER_API_TOKEN: API token used to authenticate"
    echo ""
    echo "EXAMPLE:"
    echo "`basename ${0}` --owner=helidon --app-name=helidon --branch=master build copyright checkstyle"
    echo ""
}

SETUP_OK=true
echo ""

# parse command line arguments
_PIPELINES=()
for ((i=1;i<=${#*};i++))
{
    arg="${!i}"
    case "${arg}" in
    "--owner="*)
        readonly WERCKER_USERNAME="${arg#*=}"
        ;;
    "--app-name="*)
        readonly WERCKER_APPNAME="${arg#*=}"
        ;;
    "--branch="*)
        readonly BRANCH="${arg#*=}"
        ;;
    "--debug")
        readonly DEBUG="true"
        ;;

    "--help")
        usage
        exit 0
        ;;
    *)
        if [[ $a =~ ^--([0-9a-zA-Z]+)=([0-9a-zA-Z]+)$ ]] ; then
            echo "ERROR: Unknown option: ${arg}"
        else
            _PIPELINES=(${_PIPELINES[*]} ${arg})
        fi
        ;;
    esac
}
readonly PIPELINES=(${_PIPELINES[*]})

if [ -z "${WERCKER_USERNAME}" ] ; then
    echo "ERROR: Missing required parameter --owner"
    SETUP_OK=false
fi
if [ -z "${WERCKER_APPNAME}" ] ; then
    echo "ERROR: Missing required parameter --app-name"
    SETUP_OK=false
fi
if [ -z "${BRANCH}" ] ; then
    echo "ERROR: Missing required parameter --branch"
    SETUP_OK=false
fi
if [ ${#PIPELINES[*]} -eq 0 ] ; then
    echo "ERROR: No pipeline specified (--pipeline)"
    SETUP_OK=false
fi
if ! type curl > /dev/null 2>&1; then
    echo "ERROR: curl not found in PATH"
    SETUP_OK=false
fi
if ! type jq > /dev/null 2>&1; then
    echo "ERROR: jq not found in PATH"
    SETUP_OK=false
fi
if [ -z "${WERCKER_API_TOKEN}" ] ; then
    echo "ERROR: WERCKER_API_TOKEN env variable not set"
    SETUP_OK=false
fi
if ! ${SETUP_OK} ; then
    usage
    exit 1
fi

if [ "${DEBUG}" = "true" ] ; then
    readonly CURL_OPTS="-vvv"
else
    exec 2> /dev/null
fi

readonly API_URL="https://app.wercker.com/api/v3"
readonly AUTH_HEADER="Authorization: Bearer ${WERCKER_API_TOKEN}"

APPID=$(curl ${CURL_OPTS} -H "${AUTH_HEADER}" "${API_URL}/applications/${WERCKER_USERNAME}" | \
    jq -r ".[] | select (.name == \"${WERCKER_APPNAME}\").id")

for pipeline in ${PIPELINES[*]} ; do
    echo "INFO: Triggering pipeline ${pipeline} against branch ${BRANCH}"
    pipelineId=$(curl ${CURL_OPTS} -H "${AUTH_HEADER}" "${API_URL}/workflows?applicationId=${APPID}" | \
        jq -r "first(.[].items[].data | select (.targetName == \"${pipeline}\").pipelineId)")
    url=$(curl ${CURL_OPTS} -H "${AUTH_HEADER}" -H "Content-Type: application/json" "${API_URL}/runs" \
        -d "{ \"pipelineId\": \"${pipelineId}\", \"branch\": \"${BRANCH}\" }" | \
        jq -r '.url')
    echo "INFO: ${url}"
    echo ""
done