Package org.apache.wayang.profiler.log

Class DynamicLoadProfileEstimators

java.lang.Object

org.apache.wayang.profiler.log.DynamicLoadProfileEstimators

public class DynamicLoadProfileEstimators
extends Object

Utility to create DynamicLoadProfileEstimators.

Constructor Summary

Constructors

Constructor	Description
DynamicLoadProfileEstimators()

Method Summary

Modifier and Type	Method	Description
static DynamicLoadProfileEstimator	createEstimatorFor(LoadProfileEstimator loadProfileEstimator, Configuration configuration, OptimizationSpace optimizationSpace)	Creates a DynamicLoadProfileEstimator according to the given LoadProfileEstimator and its nested LoadProfileEstimators.
static DynamicLoadProfileEstimator	createFromTemplate(String configKey, String specification, OptimizationSpace optimizationSpace)	Creates a new instance from a template String.
static DynamicLoadEstimator	wrap(LoadEstimator loadEstimator)	Exposes a LoadEstimator for ExecutionOperators as a DynamicLoadEstimator with the caveat that the ExecutionOperator will not be available in the estimation process.
static DynamicLoadProfileEstimator	wrap(LoadProfileEstimator loadProfileEstimator)	Exposes a LoadProfileEstimator for ExecutionOperators as a DynamicLoadProfileEstimator.

Methods inherited from class java.lang.Object

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

Constructor Details

DynamicLoadProfileEstimators

public DynamicLoadProfileEstimators()

Method Details

createEstimatorFor

public static DynamicLoadProfileEstimator createEstimatorFor(LoadProfileEstimator loadProfileEstimator,
 Configuration configuration,
 OptimizationSpace optimizationSpace)

Creates a DynamicLoadProfileEstimator according to the given LoadProfileEstimator and its nested LoadProfileEstimators.

Parameters:

loadProfileEstimator - that should be turned into a DynamicLoadProfileEstimator

configuration - provides templates for the DynamicLoadProfileEstimators

optimizationSpace - provides Variables for the DynamicLoadProfileEstimators

Returns:

the DynamicLoadProfileEstimator

wrap

public static DynamicLoadProfileEstimator wrap(LoadProfileEstimator loadProfileEstimator)

Exposes a LoadProfileEstimator for ExecutionOperators as a DynamicLoadProfileEstimator.

Parameters:

loadProfileEstimator - the LoadProfileEstimator or null

Returns:

the DynamicLoadProfileEstimator or null if loadProfileEstimator is null

wrap

public static DynamicLoadEstimator wrap(LoadEstimator loadEstimator)

Exposes a LoadEstimator for ExecutionOperators as a DynamicLoadEstimator with the caveat that the ExecutionOperator will not be available in the estimation process.

Parameters:

loadEstimator - the LoadEstimator or null

Returns:

the DynamicLoadEstimator or null if loadEstimator is null

createFromTemplate

public static DynamicLoadProfileEstimator createFromTemplate(String configKey,
 String specification,
 OptimizationSpace optimizationSpace)

Creates a new instance from a template String. Valid specifications are as follows:

     {"type":<*org.apache.wayang.core.util.mathex.mathex*>,
      "cpu":<mathematical expression>,
      "ram":<mathematical expression>,
      "disk":<mathematical expression>,
      "network":<mathematical expression>,
      "in":<#inputs>,
      "out":<#outputs>,
      "overhead":<overhead in milliseconds>,
      "ru":<resource utilization mathematical expression>
      }
 

The JUEL expressions accept as parameters in0, in1 a.s.o. for the input cardinalities and out0, out1 a.s.o. for the output cardinalities.

Parameters:

configKey - the Configuration from that the spec was retrieved or else null

specification - a specification that adheres to above format

optimizationSpace - maintains Variables imposed by the spec

Returns:

the new instance