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"
			if @obj.config.delayedStart
   @obj.log.info "Delaying agent handshake as per configuration.."
   @obj.agent_initialized = true # to be reset when connecting
   @apm = Thread.new do
     sleep ((@obj.config.connect_interval).to_i)/2
     doConnect
   end
 else
   doConnect
 end

			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 90

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 40

def doConnect
	begin	
      @obj.agent_initialized=false #resetting, to go with the flow
      
		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}"
				resp = startConnect "?license.key="+@obj.config.license_key+"&instance_id="+@obj.config.instance_id,agentInfo
			else
				@obj.log.debug "[doConnect] Going to connect - New "
#						if @obj.config.site24x7
#							resp = startConnect "?license.key="[email protected]_key,agentInfo
#						else
#							resp = startConnect "",agentInfo
#						end
          # Checking the license pattern for APM as per team requirement
				if !@obj.config.site24x7 && !@obj.config.license_key.match?("APMI_[A-Fa-f0-9]{64}")
			    @obj.log.info "Invalid license key for App Manager, aborting agent init"
			    @obj.shutdown=true
				else
            resp = startConnect "?license.key="+@obj.config.license_key,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 105

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 101

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