jenkins-agent-CM.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: jenkins-agent-cm
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
    # * JENKINS_AGENT_WORKDIR : agent work directory, if not set by optional parameter -workDir
    # * JENKINS_WEB_SOCKET: true if the connection should be made via WebSocket rather than TCP
    # * JENKINS_DIRECT_CONNECTION: Connect directly to this TCP agent port, skipping the HTTP(S) connection parameter download.
    #                              Value: "<HOST>:<PORT>"
    # * JENKINS_INSTANCE_IDENTITY: The base64 encoded InstanceIdentity byte array of the Jenkins master. When this is set,
    #                              the agent skips connecting to an HTTP(S) port for connection info.
    # * JENKINS_PROTOCOLS:         Specify the remoting protocols to attempt when instanceIdentity is provided.

      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 -workDir is not provided, try env vars
      if [ ! -z "$JENKINS_AGENT_WORKDIR" ]; then
      case "$@" in
      *"-workDir"*) echo "Warning: Work directory is defined twice in command-line arguments and the environment variable" ;;
      *)
      WORKDIR="-workDir $JENKINS_AGENT_WORKDIR" ;;
      esac
      fi

      if [ -n "$JENKINS_URL" ]; then
      URL="-url $JENKINS_URL"
      fi

      if [ -n "$JENKINS_NAME" ]; then
      JENKINS_AGENT_NAME="$JENKINS_NAME"
      fi

      if [ "$JENKINS_WEB_SOCKET" = true ]; then
      WEB_SOCKET=-webSocket
      fi

      if [ -n "$JENKINS_PROTOCOLS" ]; then
      PROTOCOLS="-protocols $JENKINS_PROTOCOLS"
      fi

      if [ -n "$JENKINS_DIRECT_CONNECTION" ]; then
      DIRECT="-direct $JENKINS_DIRECT_CONNECTION"
      fi

      if [ -n "$JENKINS_INSTANCE_IDENTITY" ]; then
      INSTANCE_IDENTITY="-instanceIdentity $JENKINS_INSTANCE_IDENTITY"
      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 $WORKDIR $WEB_SOCKET $DIRECT $PROTOCOLS $INSTANCE_IDENTITY $OPT_JENKINS_SECRET $OPT_JENKINS_AGENT_NAME "$@"
      fi