Elasticbeanstalk extension providing Timber Agent 0.3.x with automatic key setting

01_timber_install.config

###
#
# Installation configuration script for Timber.io's log collection agent
#
# * Docs: https://timber.io/docs/platforms/aws-elastic-beanstalk
# * Support: [email protected]
#
# To use this file:
#
# 1. Set the environment variable "TIMBER_API_KEY" using `eb setenv`
# 2. Replace the `path` values with the actual log files you want to.
#    Feel free to add multiple `[[files]]` entries for any additional log
#    files you want to track.
# 3. This file should be added to the `.ebextensions` directory in your
#    project folder.
#
---
files:
  "/etc/timber.toml":
    mode: "000640"
    owner: root
    group: root
    encoding: plain
    content: |
      [[files]]
      path = "/var/log/nodejs/nodejs.log"

      [[files]]
      path = "/var/log/nginx/access.log"

  "/tmp/set_timber_api_keys.sh":
    mode: "00755"
    owner: root
    group: root
    encoding: plain
    content: |
      #!/bin/bash
      timber_config_file="/etc/timber.toml"
      timber_api_key=`{ "Fn::GetOptionSetting" : { "Namespace": "aws:elasticbeanstalk:application:environment", "OptionName": "TIMBER_API_KEY" } }`

      sed "1i\
      default_api_key = \"${timber_api_key}\"\
      \n
      " -i $timber_config_file

  "/opt/install_timber.sh":
    mode: "000755"
    owner: root
    group: root
    encoding: plain
    content: |
      #!/usr/bin/env bash
      #
      # Elastic Beanstalk pre-deploy hook
      #
      # Shuts down the timber-agent service (if present) in order to allow upgrades
      # to proceed smoothly; then removes the any current version of the agent and
      # installs a fresh copy
      #
      if [ -f /etc/rc.d/init.d/timber-agent ]; then
        /sbin/service timber-agent stop
      fi

      # Remove any existing version of the agent
      rm -rf /opt/timber-agent

      # Download the latest patch version of the Timber Agent with a major.minor version of 0.3
      curl -o /opt/timber-agent.tar.gz \
        https://s3.amazonaws.com/packages.timber.io/agent/0.3.x/linux-amd64/timber-agent-0.3.x-linux-amd64.tar.gz

      # Unpack the agent archive at /opt/timber-agent
      tar -xzf /opt/timber-agent.tar.gz -C /opt

      rm /opt/timber-agent.tar.gz

  "/etc/logrotate.d/timber":
    mode: "000644"
    owner: root
    group: root
    encoding: plain
    content: |
      /var/log/timber-agent.log {
        missingok
        notifempty
        size 100K
        rotate 2
        postrotate
          /sbin/service timber-agent condrestart
        endscript
      }

  "/opt/elasticbeanstalk/tasks/bundlelogs.d/timber-agent.conf":
    mode: "000755"
    owner: root
    group: root
    encoding: plain
    content: |
      /var/log/timber-agent.log

  "/etc/rc.d/init.d/timber-agent":
    mode: "000755"
    owner: root
    group: root
    encoding: plain
    content: |
      #!/bin/sh
      #
      # timber-agent  Starts and stops the Timber agent as a daemonized service
      #
      # chkconfig: - 40 90
      # description: Starts and stops the Timber agent as a daemonized service \
      #              to read and upload log files to the Timber hosted service. \
      #              Configuration of the Timber agent is stored in the file \
      #              /etc/timber.toml.

      ### BEGIN INIT INFO
      # Provides:               timber-agent
      # Required-Start:         $network $local_fs $remote_fs
      # Required-Stop:          $network $local_fs $remote_fs
      # Should-Start:           $named $time
      # Should-Stop:            $named $time
      # Default-Start:          3 4 5
      # Default-Stop:           0 1 2 6
      # Short-Description:      Starts and stops the Timber agent as a daemonized service
      # Description:            Starts and stops the Timber agent as a daemonized service
      #                         to read and upload log files to the Timber hosted service.
      #                         Configuration of the Timber agent is stored in the file
      #                         /etc/timber.toml.
      ### END INIT INFO
      PATH=/sbin:/bin

      . /etc/rc.d/init.d/functions

      prog="timber-agent"
      exec=/opt/timber-agent/bin/timber-agent
      pidfile=/var/run/$prog.pid
      logfile=/var/log/timber-agent.log

      lockfile=/var/lock/subsys/$prog

      start() {
        [ -x $exec ] || exit 5
        echo -n $"Starting $prog: "
        daemon $exec --daemonize --pidfile $pidfile --agent-log-file $logfile
        retval=$?
        echo
        [ $retval -eq 0 ] && touch $lockfile
        return $retval
      }

      stop() {
        echo -n $"Stopping $prog: "
        killproc -p $pidfile $prog
        retval=$?
        echo
        [ $retval -eq 0 ] && rm -f $lockfile && rm -f $pidfile
        return $retval
      }

      restart() {
        stop
        start
      }

      reload() {
        restart
      }

      force_reload() {
        restart
      }

      rh_status() {
        status -p $pidfile $prog
      }

      rh_status_q() {
        rh_status >/dev/null 2>&1
      }

      case "$1" in
        start)
          rh_status_q && exit 0
          $1
          ;;
        stop)
          rh_status_q || exit 0
          $1
          ;;
        restart)
          $1
          ;;
        reload)
          rh_status_q || exit 7
          $1
          ;;
        force-reload)
          force_reload
          ;;
        status)
          rh_status
          ;;
        condrestart|try-restart)
          rh_status_q || exit 0
          restart
          ;;
        *)
          echo "Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload}"
          exit 2
          ;;
      esac
      exit $?

commands:
  00_install_timber:
    command: "/opt/install_timber.sh"
  01_set_api_key:
    command: "/tmp/set_timber_api_keys.sh"
  02_chkconfig:
    command: "/sbin/chkconfig timber-agent on"
  03_start_service:
    command: "/sbin/service timber-agent restart"