org.finra.herd.service.impl

Class EmrHelperServiceImpl

java.lang.Object

org.finra.herd.service.impl.EmrHelperServiceImpl

All Implemented Interfaces:

EmrHelperService

@Service
public class EmrHelperServiceImpl
extends Object
implements EmrHelperService

EmrHelperServiceImpl

Constructor Summary

Constructors

Constructor and Description
EmrHelperServiceImpl()

Method Summary

Modifier and Type	Method and Description
EmrClusterCreateDto	emrCreateClusterAwsSpecificSteps(EmrClusterCreateRequest request, EmrClusterDefinition emrClusterDefinition, EmrClusterAlternateKeyDto emrClusterAlternateKeyDto) Executes S3 specific steps for EMR cluster creation.
EmrClusterDefinition	emrPreCreateClusterSteps(EmrClusterAlternateKeyDto emrClusterAlternateKeyDto, EmrClusterCreateRequest request) Executes steps required to prepare for the EMR cluster creation.
void	logEmrClusterCreation(EmrClusterAlternateKeyDto emrClusterAlternateKeyDto, EmrClusterDefinition emrClusterDefinition, String clusterId) Logs the EMR cluster creation event.
protected void	overrideEmrClusterDefinition(EmrClusterDefinition emrClusterDefinition, EmrClusterDefinition emrClusterDefinitionOverride) Overrides the properties of emrClusterDefinition with the properties of emrClusterDefinitionOverride.

Methods inherited from class java.lang.Object

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

Constructor Detail

EmrHelperServiceImpl

public EmrHelperServiceImpl()

Method Detail

emrCreateClusterAwsSpecificSteps

@Transactional(propagation=NOT_SUPPORTED)
public EmrClusterCreateDto emrCreateClusterAwsSpecificSteps(EmrClusterCreateRequest request,
                                                                                                      EmrClusterDefinition emrClusterDefinition,
                                                                                                      EmrClusterAlternateKeyDto emrClusterAlternateKeyDto)

Executes S3 specific steps for EMR cluster creation.

This implementation executes non-transactionally, suspends the current transaction if one exists.

Specified by:

emrCreateClusterAwsSpecificSteps in interface EmrHelperService

Parameters:

request - The EMR cluster create request

emrClusterDefinition - the EMR cluster definition

emrClusterAlternateKeyDto - the ERM cluster alternate key

Returns:

an EMR cluster create DTO with the cluster creation information

emrPreCreateClusterSteps

@Transactional(propagation=REQUIRES_NEW)
public EmrClusterDefinition emrPreCreateClusterSteps(EmrClusterAlternateKeyDto emrClusterAlternateKeyDto,
                                                                                              EmrClusterCreateRequest request)
                                                                                       throws Exception

Executes steps required to prepare for the EMR cluster creation.

This implementation starts a new transaction.

Specified by:

emrPreCreateClusterSteps in interface EmrHelperService

Parameters:

emrClusterAlternateKeyDto - the ERM cluster alternate key

request - The EMR cluster create request

Returns:

the EMR cluster definition

Throws:

Exception - Exception when the original EMR cluster definition XML is malformed

logEmrClusterCreation

@Transactional(propagation=REQUIRES_NEW)
public void logEmrClusterCreation(EmrClusterAlternateKeyDto emrClusterAlternateKeyDto,
                                                                           EmrClusterDefinition emrClusterDefinition,
                                                                           String clusterId)
                                                                    throws Exception

Logs the EMR cluster creation event.

This implementation starts a new transaction.

Specified by:

logEmrClusterCreation in interface EmrHelperService

Parameters:

emrClusterAlternateKeyDto - the ERM cluster alternate key

emrClusterDefinition - the EMR cluster definition

clusterId - the EMR cluster Id

Throws:

Exception - Exception can occur when converting the EMR cluster definition to XML

overrideEmrClusterDefinition

protected void overrideEmrClusterDefinition(EmrClusterDefinition emrClusterDefinition,
                                            EmrClusterDefinition emrClusterDefinitionOverride)

Overrides the properties of emrClusterDefinition with the properties of emrClusterDefinitionOverride.

If any property in emrClusterDefinitionOverride is null, the property will remain unmodified.

If any property in emrClusterDefinitionOverride is not null, the property will be set.

Any list or object type properties will be shallowly overridden. That is, if a list is given in the override, the entire list will be set. Note that this is a shallow copy operation, so any modification to the override list or object will affect the definition.

This method does nothing if emrClusterDefinitionOverride is null.

Parameters:

emrClusterDefinition - - definition to override

emrClusterDefinitionOverride - - the override value or null