org.apache.storm.loadgen

Class LoadCompConf

java.lang.Object

org.apache.storm.loadgen.LoadCompConf

public class LoadCompConf
extends Object

Configuration for a simulated spout.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	LoadCompConf.Builder

Field Summary

Fields

Modifier and Type	Field and Description
double	cpuLoad
String	id
double	memoryLoad
int	parallelism
SlowExecutorPattern	slp
List<OutputStream>	streams

Constructor Summary

Constructors

Constructor and Description
LoadCompConf(String id, int parallelism, List<OutputStream> streams, double cpuLoad, double memoryLoad, SlowExecutorPattern slp) Create a new LoadCompConf with the given values.

Method Summary

Modifier and Type	Method and Description
static LoadCompConf	fromConf(Map<String,Object> conf) Parse the LoadCompConf from a config Map.
double	getAllEmittedAggregate() Compute the total amount of all messages emitted in all streams per second.
LoadCompConf	overrideSlowExecutorPattern(SlowExecutorPattern slp) Override the SlowExecutorPattern with a new one.
LoadCompConf	remap(Map<String,String> remappedComponents, Map<GlobalStreamId,GlobalStreamId> remappedStreams) Chenge the name of components and streams according to the parameters passed in.
LoadCompConf	scaleParallel(double v) Scale the parallelism of this component by v.
LoadCompConf	scaleThroughput(double v) Scale the throughput of this component.
LoadCompConf	setParallel(int newParallelism) Set the parallelism of this component, and adjust the throughput so in aggregate it stays the same.
Map<String,Object>	toConf() Build a config map for this object.

Methods inherited from class java.lang.Object

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

Field Detail

id

public final String id

parallelism

public final int parallelism

streams

public final List<OutputStream> streams

cpuLoad

public final double cpuLoad

memoryLoad

public final double memoryLoad

slp

public final SlowExecutorPattern slp

Constructor Detail

LoadCompConf

public LoadCompConf(String id,
                    int parallelism,
                    List<OutputStream> streams,
                    double cpuLoad,
                    double memoryLoad,
                    SlowExecutorPattern slp)

Create a new LoadCompConf with the given values.

Parameters:

id - the id of the component.

parallelism - tha parallelism of the component.

streams - the output streams of the component.

Method Detail

fromConf

public static LoadCompConf fromConf(Map<String,Object> conf)

Parse the LoadCompConf from a config Map.

Parameters:

conf - the map holding the config for a LoadCompConf.

Returns:

the parsed object.

toConf

public Map<String,Object> toConf()

Build a config map for this object.

Returns:

the config map.

remap

public LoadCompConf remap(Map<String,String> remappedComponents,
                          Map<GlobalStreamId,GlobalStreamId> remappedStreams)

Chenge the name of components and streams according to the parameters passed in.

Parameters:

remappedComponents - original component name to new component name.

remappedStreams - original stream id to new stream id.

Returns:

a copy of this with the values remapped.

scaleParallel

public LoadCompConf scaleParallel(double v)

Scale the parallelism of this component by v. The aggregate throughput will be the same. The parallelism will be rounded up to the next largest whole number. Parallelism will always be at least 1.

Parameters:

v - 1.0 is not change 0.5 is drop the parallelism by half.

Returns:

a copy of this with the parallelism adjusted.

setParallel

public LoadCompConf setParallel(int newParallelism)

Set the parallelism of this component, and adjust the throughput so in aggregate it stays the same.

Parameters:

newParallelism - the new parallelism to set.

Returns:

a copy of this with the adjustments made.

scaleThroughput

public LoadCompConf scaleThroughput(double v)

Scale the throughput of this component.

Parameters:

v - 1.0 is unchanged 0.5 will cut the throughput in half.

Returns:

a copy of this with the adjustments made.

overrideSlowExecutorPattern

public LoadCompConf overrideSlowExecutorPattern(SlowExecutorPattern slp)

Override the SlowExecutorPattern with a new one.

Parameters:

slp - the new pattern or null if you don't want it to change

Returns:

a copy of this with the adjustments made.

getAllEmittedAggregate

public double getAllEmittedAggregate()

Compute the total amount of all messages emitted in all streams per second.

Returns:

the sum of all messages emitted per second.