apiVersion: v1
kind: ConfigMap
metadata:
  name: jenkins-agent
  namespace: placeholder
data:
  jenkins-agent: |
    #!/usr/bin/env sh
    # The MIT License
    #
    #  Copyright (c) 2015, CloudBees, Inc.
    #
    #  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.
    # Usage jenkins-slave.sh [options] -url http://jenkins [SECRET] [AGENT_NAME]
    # Optional environment variables :
    # * JENKINS_TUNNEL : HOST:PORT for a tunnel to route TCP traffic to jenkins host, when jenkins can't be directly accessed over network
    # * JENKINS_URL : alternate jenkins URL
    # * JENKINS_SECRET : agent secret, if not set as an argument
    # * JENKINS_AGENT_NAME : agent name, if not set as an argument
    if [ $# -eq 1 ]; then
        # if `docker run` only has one arguments, we assume user is running alternate command like `bash` to inspect the image
        exec "$@"
    else
        # if -tunnel is not provided try env vars
        case "$@" in
            *"-tunnel "*) ;;
            *)
            if [ ! -z "$JENKINS_TUNNEL" ]; then
                TUNNEL="-tunnel $JENKINS_TUNNEL"
            fi ;;
        esac
        if [ -n "$JENKINS_URL" ]; then
            URL="-url $JENKINS_URL"
        fi
        if [ -n "$JENKINS_NAME" ]; then
            JENKINS_AGENT_NAME="$JENKINS_NAME"
        fi  
        if [ -z "$JNLP_PROTOCOL_OPTS" ]; then
            echo "Warning: JnlpProtocol3 is disabled by default, use JNLP_PROTOCOL_OPTS to alter the behavior"
            JNLP_PROTOCOL_OPTS="-Dorg.jenkinsci.remoting.engine.JnlpProtocol3.disabled=true"
        fi
        # If both required options are defined, do not pass the parameters
        OPT_JENKINS_SECRET=""
        if [ -n "$JENKINS_SECRET" ]; then
            case "$@" in
                *"${JENKINS_SECRET}"*) echo "Warning: SECRET is defined twice in command-line arguments and the environment variable" ;;
                *)
                OPT_JENKINS_SECRET="${JENKINS_SECRET}" ;;
            esac
        fi
        
        OPT_JENKINS_AGENT_NAME=""
        if [ -n "$JENKINS_AGENT_NAME" ]; then
            case "$@" in
                *"${JENKINS_AGENT_NAME}"*) echo "Warning: AGENT_NAME is defined twice in command-line arguments and the environment variable" ;;
                *)
                OPT_JENKINS_AGENT_NAME="${JENKINS_AGENT_NAME}" ;;
            esac
        fi
        SLAVE_JAR=/usr/share/jenkins/slave.jar
        if [ ! -f "$SLAVE_JAR" ]; then
            tmpfile=$(mktemp)
            if hash wget > /dev/null 2>&1; then
                wget -O "$tmpfile" "$JENKINS_URL/jnlpJars/slave.jar"
            elif hash curl > /dev/null 2>&1; then
                curl -o "$tmpfile" "$JENKINS_URL/jnlpJars/slave.jar"
            else
                echo "Image does not include $SLAVE_JAR and could not find wget or curl to download it"
                return 1
            fi
            SLAVE_JAR=$tmpfile
        fi
        #TODO: Handle the case when the command-line and Environment variable contain different values.
        #It is fine it blows up for now since it should lead to an error anyway.
        exec java $JAVA_OPTS $JNLP_PROTOCOL_OPTS -cp $SLAVE_JAR hudson.remoting.jnlp.Main -headless $TUNNEL $URL $OPT_JENKINS_SECRET $OPT_JENKINS_AGENT_NAME "$@"
    fi