org.nuxeo.lib.stream.tools.command

Class LatencyMonitorComputation

java.lang.Object

org.nuxeo.lib.stream.computation.AbstractComputation

org.nuxeo.lib.stream.tools.command.LatencyTrackerComputation

org.nuxeo.lib.stream.tools.command.LatencyMonitorComputation

All Implemented Interfaces:

Computation

public class LatencyMonitorComputation
extends LatencyTrackerComputation

A computation that sends periodically latencies to graphite.

Since:

10.3

Field Summary

Fields

Modifier and Type	Field and Description
protected String	basePrefix
protected com.codahale.metrics.graphite.GraphiteSender	graphite
protected String	host
protected int	port
protected boolean	udp

Fields inherited from class org.nuxeo.lib.stream.tools.command.LatencyTrackerComputation

codec, count, intervalMs, logGroups, logNames, manager, OUTPUT_STREAM, remaining, verbose

Fields inherited from class org.nuxeo.lib.stream.computation.AbstractComputation

INPUT_1, INPUT_2, INPUT_3, metadata, OUTPUT_1, OUTPUT_2, OUTPUT_3, OUTPUT_4

Constructor Summary

Constructors

Constructor and Description
LatencyMonitorComputation(LogManager manager, List<String> logNames, String host, int port, boolean udp, String basePrefix, String computationName, int intervalSecond, int count, boolean verbose, Codec<Record> codec)

Method Summary

Modifier and Type	Method and Description
void	destroy() Called when the framework is ready to shutdown the computation.
void	init(ComputationContext context) Called when the framework has registered the computation successfully.
void	processTimer(ComputationContext context, String key, long timestamp) Process a timer callback previously set via ComputationContext.setTimer(String, long).

Methods inherited from class org.nuxeo.lib.stream.tools.command.LatencyTrackerComputation

debug, decodeKey, encodeKey, encodeLatency, error, getLatenciesForPartition, info, processRecord

Methods inherited from class org.nuxeo.lib.stream.computation.AbstractComputation

metadata, processFailure, processRetry

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.nuxeo.lib.stream.computation.Computation

signalStop

Field Detail

host

protected final String host

port

protected final int port

udp

protected final boolean udp

basePrefix

protected final String basePrefix

graphite

protected com.codahale.metrics.graphite.GraphiteSender graphite

Constructor Detail

LatencyMonitorComputation

public LatencyMonitorComputation(LogManager manager,
                                 List<String> logNames,
                                 String host,
                                 int port,
                                 boolean udp,
                                 String basePrefix,
                                 String computationName,
                                 int intervalSecond,
                                 int count,
                                 boolean verbose,
                                 Codec<Record> codec)

Method Detail

init

public void init(ComputationContext context)

Description copied from interface: Computation

Called when the framework has registered the computation successfully. Gives users a first opportunity to schedule timer callbacks and produce records.

Specified by:

init in interface Computation

Overrides:

init in class LatencyTrackerComputation

Parameters:

context - The computation context object provided by the system.

processTimer

public void processTimer(ComputationContext context,
                         String key,
                         long timestamp)

Description copied from interface: Computation

Process a timer callback previously set via ComputationContext.setTimer(String, long).

Specified by:

processTimer in interface Computation

Overrides:

processTimer in class LatencyTrackerComputation

Parameters:

context - The computation context object provided by the system.

key - The name of the timer.

timestamp - The timestamp (in ms) for which the callback was scheduled.

destroy

public void destroy()

Description copied from interface: Computation

Called when the framework is ready to shutdown the computation. Gives users a chance to perform some cleanup before the process is killed.

Specified by:

destroy in interface Computation

Overrides:

destroy in class LatencyTrackerComputation