org.apache.slider.server.services.yarnregistry

Class YarnRegistryViewForProviders

java.lang.Object

org.apache.slider.server.services.yarnregistry.YarnRegistryViewForProviders

public class YarnRegistryViewForProviders
extends Object

Registry view for providers. This tracks where the service is registered, offers access to the record and other things.

Constructor Summary

Constructors

Constructor and Description
YarnRegistryViewForProviders(org.apache.hadoop.registry.client.api.RegistryOperations registryOperations, String user, String sliderServiceClass, String instanceName, org.apache.hadoop.yarn.api.records.ApplicationAttemptId applicationAttemptId)

Method Summary

Methods

Modifier and Type	Method and Description
void	deleteChildren(String path, boolean recursive) Delete the children of a path -but not the path itself.
void	deleteComponent(String componentName) Delete a component
String	getAbsoluteSelfRegistrationPath() Get the absolute path to where the service has registered itself.
org.apache.hadoop.yarn.api.records.ApplicationAttemptId	getApplicationAttemptId()
String	getInstanceName()
org.apache.hadoop.registry.client.api.RegistryOperations	getRegistryOperations()
org.apache.hadoop.registry.client.types.ServiceRecord	getSelfRegistration()
String	getSelfRegistrationPath() Get the path to where the service has registered itself.
String	getSliderServiceClass()
String	getUser()
void	putComponent(String componentName, org.apache.hadoop.registry.client.types.ServiceRecord record) Add a component under the slider name/entry
void	putComponent(String serviceClass, String serviceName, String componentName, org.apache.hadoop.registry.client.types.ServiceRecord record) Add a component
String	putService(String serviceClass, String serviceName, org.apache.hadoop.registry.client.types.ServiceRecord record, boolean deleteTreeFirst) Add a service under a path for the current user
String	putService(String username, String serviceClass, String serviceName, org.apache.hadoop.registry.client.types.ServiceRecord record, boolean deleteTreeFirst) Add a service under a path, optionally purging any history
String	registerSelf(org.apache.hadoop.registry.client.types.ServiceRecord record, boolean deleteTreeFirst) Add a service under a path for the current user
void	updateSelf() Update the self record by pushing out the latest version of the service registration record.

Methods inherited from class java.lang.Object

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

Constructor Detail

YarnRegistryViewForProviders

public YarnRegistryViewForProviders(org.apache.hadoop.registry.client.api.RegistryOperations registryOperations,
                            String user,
                            String sliderServiceClass,
                            String instanceName,
                            org.apache.hadoop.yarn.api.records.ApplicationAttemptId applicationAttemptId)

Method Detail

getApplicationAttemptId

public org.apache.hadoop.yarn.api.records.ApplicationAttemptId getApplicationAttemptId()

getUser

public String getUser()

getSliderServiceClass

public String getSliderServiceClass()

getInstanceName

public String getInstanceName()

getRegistryOperations

public org.apache.hadoop.registry.client.api.RegistryOperations getRegistryOperations()

getSelfRegistration

public org.apache.hadoop.registry.client.types.ServiceRecord getSelfRegistration()

getSelfRegistrationPath

public String getSelfRegistrationPath()

Get the path to where the service has registered itself. Null until the service is registered

Returns:

the service registration path.

getAbsoluteSelfRegistrationPath

public String getAbsoluteSelfRegistrationPath()

Get the absolute path to where the service has registered itself. This includes the base registry path Null until the service is registered

Returns:

the service registration path.

putComponent

public void putComponent(String componentName,
                org.apache.hadoop.registry.client.types.ServiceRecord record)
                  throws IOException

Add a component under the slider name/entry

Parameters:

componentName - component name

record - record to put

Throws:

IOException

putComponent

public void putComponent(String serviceClass,
                String serviceName,
                String componentName,
                org.apache.hadoop.registry.client.types.ServiceRecord record)
                  throws IOException

Add a component

Parameters:

serviceClass - service class to use under ~user

componentName - component name

record - record to put

Throws:

IOException

putService

public String putService(String username,
                String serviceClass,
                String serviceName,
                org.apache.hadoop.registry.client.types.ServiceRecord record,
                boolean deleteTreeFirst)
                  throws IOException

Add a service under a path, optionally purging any history

Parameters:

username - user

serviceClass - service class to use under ~user

serviceName - name of the service

record - service record

deleteTreeFirst - perform recursive delete of the path first.

Returns:

the path the service was created at

Throws:

IOException

putService

public String putService(String serviceClass,
                String serviceName,
                org.apache.hadoop.registry.client.types.ServiceRecord record,
                boolean deleteTreeFirst)
                  throws IOException

Add a service under a path for the current user

Parameters:

serviceClass - service class to use under ~user

serviceName - name of the service

record - service record

deleteTreeFirst - perform recursive delete of the path first

Returns:

the path the service was created at

Throws:

IOException

registerSelf

public String registerSelf(org.apache.hadoop.registry.client.types.ServiceRecord record,
                  boolean deleteTreeFirst)
                    throws IOException

Add a service under a path for the current user

Parameters:

serviceClass - service class to use under ~user

serviceName - name of the service

record - service record

deleteTreeFirst - perform recursive delete of the path first

Returns:

the path the service was created at

Throws:

IOException

updateSelf

public void updateSelf()
                throws IOException

Update the self record by pushing out the latest version of the service registration record.

Throws:

IOException - any failure.

deleteComponent

public void deleteComponent(String componentName)
                     throws IOException

Delete a component

Parameters:

componentName - component name

Throws:

IOException

deleteChildren

public void deleteChildren(String path,
                  boolean recursive)
                    throws IOException

Delete the children of a path -but not the path itself. It is not an error if the path does not exist

Parameters:

path - path to delete

recursive - flag to request recursive deletes

Throws:

IOException - IO problems