Class: Fluent::DockerEventStreamInput

Inherits:
Input
  • Object
show all
Defined in:
lib/fluent/plugin/in_docker_events.rb,
lib/fluent/plugin/in_docker_event_streams.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ DockerEventStreamInput

Returns a new instance of DockerEventStreamInput.



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# File 'lib/fluent/plugin/in_docker_events.rb', line 13

def initialize
  super
  require 'docker'
end

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/in_docker_events.rb', line 18

def configure(conf)
  super
  @events = @events.split(',').map {|event| event.strip }
end

#emit(r) ⇒ Object 



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# File 'lib/fluent/plugin/in_docker_events.rb', line 45

def emit(r)
    record = {
        "id" => r.id,
        "action" => r.action,
        "status" => r.status,
        "type" => r.type,
    }
    _container = Thread.new{ results = Docker::Container.get(r.id) }.value
    if _container
        record["container"] = {
            "state" => _container.info["State"],
            "name" => _container.info["Name"].gsub(/^\//, ''),
        }
        _image = Thread.new{ results = Docker::Image.get(_container.info["Image"]) }.value
        if _image
            record["container"]["image"] = _image.info["RepoTags"]
        end
    end
    router.emit(@tag, Time.now.to_i, record)
end

#run ⇒ Object 



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# File 'lib/fluent/plugin/in_docker_events.rb', line 35

def run     
    while @running
        Docker::Event.stream do |event|
            if @events.include?(event.action)
                emit(event)
            end
        end
    end
end

#shutdown ⇒ Object 



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# File 'lib/fluent/plugin/in_docker_events.rb', line 30

def shutdown
  @running = false
  @thread.join
end

#start ⇒ Object 



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# File 'lib/fluent/plugin/in_docker_events.rb', line 23

def start
  super

  @running = true
  @thread = Thread.new(&method(:run))
end