org.apache.ambari.server.api.services.stackadvisor

Class StackAdvisorHelper

java.lang.Object

org.apache.ambari.server.api.services.stackadvisor.StackAdvisorHelper

public class StackAdvisorHelper
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.apache.commons.logging.Log	LOG

Constructor Summary

Constructors

Constructor and Description
StackAdvisorHelper(Configuration conf, StackAdvisorRunner saRunner, AmbariMetaInfo metaInfo, AmbariServerConfigurationHandler ambariServerConfigurationHandler, com.google.gson.Gson gson)

Method Summary

Modifier and Type	Method and Description
void	clearCaches(Set<String> hostNames)
void	clearCaches(String hostName)
protected String	getHash(StackAdvisorRequest request)
RecommendationResponse	recommend(StackAdvisorRequest request) Returns recommendation (component-layout or configurations) based on the request.
ValidationResponse	validate(StackAdvisorRequest request) Returns validation (component-layout or configurations) result for the request.

Methods inherited from class java.lang.Object

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

Field Detail

LOG

protected static org.apache.commons.logging.Log LOG

Constructor Detail

StackAdvisorHelper

@Inject
public StackAdvisorHelper(Configuration conf,
                                  StackAdvisorRunner saRunner,
                                  AmbariMetaInfo metaInfo,
                                  AmbariServerConfigurationHandler ambariServerConfigurationHandler,
                                  com.google.gson.Gson gson)
                           throws IOException

Throws:

IOException

Method Detail

validate

public ValidationResponse validate(StackAdvisorRequest request)
                            throws StackAdvisorException

Returns validation (component-layout or configurations) result for the request.

Parameters:

request - the validation request

Returns:

ValidationResponse instance

Throws:

StackAdvisorException - in case of stack advisor script errors

recommend

public RecommendationResponse recommend(StackAdvisorRequest request)
                                 throws StackAdvisorException,
                                        org.apache.ambari.server.AmbariException

Returns recommendation (component-layout or configurations) based on the request.

Parameters:

request - the recommendation request

Returns:

RecommendationResponse instance

Throws:

StackAdvisorException - in case of stack advisor script errors

org.apache.ambari.server.AmbariException

getHash

protected String getHash(StackAdvisorRequest request)

clearCaches

public void clearCaches(String hostName)

clearCaches

public void clearCaches(Set<String> hostNames)