Class: ManageEngine::APMAgent

Inherits:
Object
  • Object
show all
Defined in:
lib/agent/server/am_agent.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ APMAgent

Returns a new instance of APMAgent.



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# File 'lib/agent/server/am_agent.rb', line 9

def initialize
      @obj = ManageEngine::APMObjectHolder.instance
      @obj.log.debug "Agent Initialization - START"
      doConnect

      if !@obj.shutdown && @obj.agent_initialized
        @obj.log.info "Agent Initialization - DONE"
        ManageEngine::Environment.new.detect_and_instrument
        
        doDispatcherActions
        doCollect
        puts "APM Insight Ruby Agent Started. Agent files are located at #{@obj.constants.conf_location}"
        puts "Agent log file apm.log is generated at #{@obj.log.getLogFilePath}"
      else
        @obj.log.info "Agent Initialization Failed - Going to shutdown"
        #While parsing the response from /arh/connect we set instrumenter to nil on delete request
        #Server startup fails when the below instruction is executed
        #@obj.instrumenter.doUnSubscribe
        @obj.shutdownagent
      end
      

end

Instance Method Details

#doCollect ⇒ Object 



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# File 'lib/agent/server/am_agent.rb', line 78

def doCollect
  @obj.log.info "[doCollect] Starts - Wait time : #{@obj.config.connect_interval} seconds "
  begin
    ManageEngine::APMWorker.getInstance.start
  rescue Exception=>e
    @obj.log.logException "[doCollect]  Exception during worker  startup  #{e.message}",e
    @obj.shutdown=true
  end
end

#doConnect ⇒ Object 



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# File 'lib/agent/server/am_agent.rb', line 33

def doConnect
  begin  
    if @obj.shutdown
      @obj.log.info "[ Problem in Agent Startup ]"
    else
      agentInfo = @obj.config.getAgentInfo
      resp = nil
      if @obj.config.alreadyconnected
        @obj.log.debug "[doConnect] Already Connected - Make Contact - Instance id = #{@obj.config.instance_id}"
        if @obj.config.site24x7
          resp = startConnect "?license.key="+@obj.config.license_key+"&instance_id="+@obj.config.instance_id,agentInfo
        else
          resp = startConnect "?instance_id="+@obj.config.instance_id,agentInfo
        end
      else
        @obj.log.debug "[doConnect] Going to connect - New "
        if @obj.config.site24x7
          resp = startConnect "?license.key="+@obj.config.license_key,agentInfo
        else
          resp = startConnect "",agentInfo
        end
      end
      
      if (resp == nil || !resp.has_key?("instance-info"))
        @obj.log.info "[doConnect] [ Problem in connecting server] [ Going to shutdown ]"
          @obj.shutdown=true
      else
        aData = resp["instance-info"]
        aData["agent.id"]=aData.delete("instanceid")
        aData["agent.enabled"]=true
        @obj.config.updateAgentInfoFile(aData)
        @obj.log.info "[doConnect] Agent successfully connected - InstanceID  : #{@obj.config.instance_id}"
      end

      if(!@obj.shutdown)
        @obj.agent_initialized=true
      end
    end
  rescue Exception=>e
    @obj.shutdown = true
    @obj.log.logException "[doConnect] Exception while connecting server. [ Going to shutdown ] ",e
  end
end

#doDispatcherActions ⇒ Object 



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# File 'lib/agent/server/am_agent.rb', line 93

def doDispatcherActions
  @obj.log.info "Dispatcher: #{@obj.config.app_dispatcher}"
  case @obj.config.app_dispatcher
    when 'passenger'
      #starting a new process
            PhusionPassenger.on_event(:starting_worker_process) do |forked|
              if forked
                    @obj.log.info "starting_worker_process : Process ID :#{Process.pid} : Creating new apm worker"
                    doCollect
              else
                    doCollect
                  @obj.log.info "starting_worker_process : Conservative Process ID :#{Process.pid} - No new worker"
              end
          end
            # shutting down a process.
        PhusionPassenger.on_event(:stopping_worker_process) do
                  ManageEngine::APMWorker.getInstance.stop
                  @obj.log.info "stopping_worker_process :Process ID :#{Process.pid} ---->  #$$ "
          end
      when 'unicorn'
         Unicorn::HttpServer.class_eval do
           old_object = instance_method(:worker_loop)
           define_method(:worker_loop) do |worker|
             ::ManageEngine::APMObjectHolder.instance.agent.doCollect
             old_object.bind(self).call(worker)
           end
         end
    when 'rainbows'
      Rainbows::HttpServer.class_eval do
         old_object = instance_method(:worker_loop)
         define_method(:worker_loop) do |worker|
           ::ManageEngine::APMObjectHolder.instance.agent.doCollect
           old_object.bind(self).call(worker)
         end
     end
    else#case

    end#case
end

#startConnect(uri, data) ⇒ Object 



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# File 'lib/agent/server/am_agent.rb', line 89

def startConnect uri,data
  resp = @obj.connector.post @obj.constants.connect_uri+uri,data
end