Class: ManageEngine::APMWorker

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ APMWorker

Returns a new instance of APMWorker.



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# File 'lib/agent/server/worker/am_worker.rb', line 10

def initialize
  @status = "initialized"
  @id = Process.pid
end

Instance Attribute Details

#id ⇒ Object

Returns the value of attribute id.



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

def id
  @id
end

Class Method Details

.getInstance ⇒ Object 



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# File 'lib/agent/server/worker/am_worker.rb', line 37

def self.getInstance
  if(@work==nil || @work.id!=Process.pid)
   	@work = ManageEngine::APMWorker.new
  end
  return @work
end

Instance Method Details

#checkforagentstatus ⇒ Object 



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# File 'lib/agent/server/worker/am_worker.rb', line 70

def checkforagentstatus
	prevState = @obj.config.agent_enabled
	@obj.config.checkAgentInfo
	if !@obj.config.agent_enabled
		@obj.log.info "Agent in Disabled State."
		if prevState
			@obj.log.info "Agent in Disabled State. Going to unsubscribe"
#					@obj.instrumenter.doUnSubscribe
		end
	else
		if !prevState
			@obj.log.info "Agent in Active State."
#					@obj.instrumenter.doSubscribe
		end
	end
end

#dc ⇒ Object 



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# File 'lib/agent/server/worker/am_worker.rb', line 92

def dc
  	    begin
              @obj.log.debug "[dc] collecting..."
              now = @obj.util.currenttimemillis
              result =  Array.new
              result.push(@obj.last_dispatch_time)
                              result.push(now)
              data = Array.new
              trd= nil;
              @last_dispatch_time = now
              if @obj.config.agent_enabled
                      d = @obj.parser.parse @obj.store.metrics_dup
                      if(d!=nil && d.has_key?("trace-data"))
                              trd = d.delete("trace-data");
                              #@obj.log.info "[dc] [TRACE] : #{d}"
                      end
                      #@obj.log.info "[dc] Data - #{d}"
                      if(d.length>0)
                              data =@obj.formatter.format d
                              #@obj.log.debug "[dc] Formatted Data - #{data}"
                      end
                      @obj.store.remove @obj.formatter.keysToRemove
              end #if
              fd = Array.new
              fd.push(data)
              if(trd!=nil)
              	fd.push(trd)
              end
		@obj.log.debug "[dc] data to store : #{fd}"
              send_save fd
		@obj.log.debug "[dc] collecting ends"
       rescue Exception=>e
              @obj.log.logException "[dc]  Exception during data Collection. #{e.message}",e
              @obj.shutdown=true
  	    end
end

#mapdb(res, dat) ⇒ Object 



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# File 'lib/agent/server/worker/am_worker.rb', line 284

def mapdb res,dat
	res[0] = res[0]+dat[0];
		if dat[1]<res[1]
		res[1]=dat[1]
	end
	if dat[2]>res[2]
		res[2]=dat[2]
	end
	res[3] = res[3]+dat[3]
	res[4] = res[4]+dat[4]
	res
end

#mapdx(res, dat) ⇒ Object 



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# File 'lib/agent/server/worker/am_worker.rb', line 250

def mapdx res,dat
  begin
		  rtData = res[0];
			rtData[0] = rtData[0]+dat[0][0];
			if dat[0][1]<rtData[1]
			  rtData[1]=dat[0][1]
			end
			if dat[0][2]>rtData[2]
			  rtData[2]=dat[0][2]
			end
			rtData[3] = rtData[3]+dat[0][3]
			rtData[5] = rtData[5]+dat[0][5]
			rtData[6] = rtData[6]+dat[0][6]
			rtData[7] = rtData[7]+dat[0][7]
			rtData[4] = rtData[3] != 0 ? (rtData[5].to_f + (rtData[6].to_f/2).to_f).to_f/rtData[3].to_f : 0
			res[0] = rtData
			
			resExcepData = res[1][@obj.constants.mf_logmetric]
			excepData = dat[1][@obj.constants.mf_logmetric]
			if (resExcepData == nil)
			    resExcepData = excepData
			else
			  if (excepData != nil)
			    resExcepData = resExcepData.merge(excepData){|key, oldval, newval| newval + oldval}
			  end
			end
			
			res[1][@obj.constants.mf_logmetric] = resExcepData != nil ? resExcepData : Hash.new
			rescue Exception=>e
			  @obj.log.logException "Exception while merging data",e
			end
	res
end

#merge(data) ⇒ Object 



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# File 'lib/agent/server/worker/am_worker.rb', line 226

def merge data
#                 @obj.log.info "BEFORE MERGE : #{data}"
		tdata =Hash.new ;
		data.each do |sd|
			name= sd[0]["ns"] + sd[0]["name"];
			if tdata.has_key?(name)
				if (sd[0]["name"]=="apdex")
					tdata[name][1] = mapdx(tdata[name][1],sd[1])
				else
					tdata[name][1] = mapdb(tdata[name][1],sd[1])
				end
			else
				tdata[name]=sd;
			end
		end
#@obj.log.info "MERGED DATA : #{tdata}"
		res = Array.new;
		tdata.each do|key,value|
			res.push(value);
	   end
	res
end

#read(p) ⇒ Object 



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# File 'lib/agent/server/worker/am_worker.rb', line 190

def read p
     data = Array.new
  File.open( p, "r+" ) { |f|
f.flock(File::LOCK_EX)
     	begin
        		f.each_line do |line|
        		   begin
        		     data.push(JSON.parse(line))
        		   rescue Exception=>ex
        		     @obj.log.logException "Error Parsing data, Skipping line #{line}", ex
        		   end
       		end
   f.truncate 0
   		rescue Exception=>e
         	@obj.log.logException "Exception while reading data #{e}",e
  		ensure
         	f.flock(File::LOCK_UN)
 		end
 	}
     data
end

#save(fd) ⇒ Object 



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# File 'lib/agent/server/worker/am_worker.rb', line 161

def save fd
        begin
        	data = fd.to_json;
        	write @obj.constants.agent_store,data
        rescue Exception=>e
        	@obj.log.logException "[dc]  Exception during save. #{e.message}",e
        end
end

#send_save(data) ⇒ Object 



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# File 'lib/agent/server/worker/am_worker.rb', line 170

def send_save data
        begin
        	if FileTest.exist?(@obj.constants.agent_lock)
                if Time.now.to_i - File.mtime(@obj.constants.agent_lock).to_i >= (@obj.config.connect_interval).to_i
                        @obj.log.debug "worker send signal"
                        senddata data
                else
                        @obj.log.info "worker save signal"
                        save data
                end
        else
                @obj.log.info "worker save signals"
                save data
                write @obj.constants.agent_lock,"#{Process.pid}"
        end
        rescue Exception=>e
                @obj.log.logException "Exception in decision making send or save #{e.message}",e
        end
end

#senddata(d) ⇒ Object 



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# File 'lib/agent/server/worker/am_worker.rb', line 129

def senddata d
       # @obj.log.info("Send data --- #{d}")
        result =  Array.new
        result.push( (File.mtime(@obj.constants.agent_lock).to_f*1000).to_i)
        now = @obj.util.currenttimemillis
        result.push(now)
        write @obj.constants.agent_lock ,"#{Process.pid}"
        data  = read @obj.constants.agent_store
        data.push(d);
        tdata = Array.new;
        trdata = Array.new;
        data.each do |val|
                case val.size
                when 1
                        tdata.concat(val[0])
                when 2
                        tdata.concat(val[0])
                        if (trdata.size < @obj.config.trace_overflow_t)
                          trdata.concat(val[1])
                        end
                end
        end
        result.push(merge(tdata))
        resp = @obj.connector.post @obj.constants.connect_data_uri+@obj.config.instance_id,result
        @obj.log.info "#{tdata.size} metric(s) dispatched."
        if trdata.size>0
                result[2]=trdata;
                resp = @obj.connector.post @obj.constants.connect_trace_uri+@obj.config.instance_id,result
                @obj.log.info "#{trdata.size} trace(s) dispatched."
        end
end

#start ⇒ Object 



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# File 'lib/agent/server/worker/am_worker.rb', line 15

def start
  @obj = ManageEngine::APMObjectHolder.instance

	if @status=="working"
    @obj.log.debug "worker thread already started"
  elsif @status == "initialized"
    @obj.log.info "start worker thread for - #{Process.pid} :: #{@status}  "
    #@obj.log.info "Starting APMWorker Thread #{Process.pid} "
    @apm = Thread.new do
      @status  = 'working'
  	  while !@obj.shutdown do
        sleep (@obj.config.connect_interval).to_i
  	    checkforagentstatus
				updateConfig
        dc
      end#w
      @status= "end"
      @obj.log.debug "Worker thread ends"
    end
  end
end

#stop ⇒ Object 



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# File 'lib/agent/server/worker/am_worker.rb', line 87

def stop
    dc
			@obj.shutdown = true;
end

#updateConfig ⇒ Object 



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# File 'lib/agent/server/worker/am_worker.rb', line 44

def updateConfig
	if(@obj.config.lastupdatedtime!=File.mtime(@obj.constants.apm_conf).to_i)
		@obj.log.info "Configuration File Changed... So Updating Configuration."
		agent_config_data = @obj.config.getAgentConfigData
		@obj.config.lastupdatedtime=File.mtime(@obj.constants.apm_conf).to_i
		@obj.config.configureFile
		@obj.config.assignConfig
		new_agent_config_data = @obj.config.getAgentConfigData
		sendUpdate = "false"
		agent_config_data.each do|key,value|
			if key != "last.modified.time"
				newValue = new_agent_config_data[key]
				if value != newValue
					sendUpdate = "true"
				end
			end
		end
		if sendUpdate == "true"
			@obj.log.info "sending update to server #{new_agent_config_data}"
			data1 =  Hash.new
			data1["custom_config_info"]=new_agent_config_data
       			        resp = @obj.connector.post @obj.constants.connect_config_update_uri+@obj.config.instance_id,data1
		end
	end
end

#write(p, data) ⇒ Object 



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# File 'lib/agent/server/worker/am_worker.rb', line 213

def write (p,  data )
    File.open( p, "a+" ) { |f|
     	f.flock(File::LOCK_EX)
        begin
					f.write "#{data}\n"
        rescue Exception=>e
                @obj.log.logException "Exception while writing data #{e.message}",e
  ensure
            f.flock(File::LOCK_UN)
        end
    }
end