org.apache.slider.core.registry.retrieve

Class RegistryRetriever

java.lang.Object

org.apache.slider.core.registry.retrieve.AMWebClient

org.apache.slider.core.registry.retrieve.RegistryRetriever

public class RegistryRetriever
extends AMWebClient

Registry retriever. This hides the HTTP operations that take place to get the actual content

Constructor Summary

Constructors

Constructor and Description
RegistryRetriever(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.registry.client.types.ServiceRecord record) Retrieve from a service by locating the exported CustomRegistryConstants.PUBLISHER_CONFIGURATIONS_API and working off it.

Method Summary

Methods

Modifier and Type	Method and Description
PublishedConfigSet	getConfigurations(boolean external) Get the configurations of the registry
protected String	getConfigurationURL(boolean external)
PublishedExportsSet	getExports(boolean external) Get the configurations of the registry
protected String	getExportURL(boolean external)
boolean	hasConfigurations(boolean external) Does a bonded registry retriever have a configuration?
PublishedConfiguration	retrieveConfiguration(PublishedConfigSet configSet, String name, boolean external) Get a complete configuration, with all values
PublishedExports	retrieveExports(PublishedExportsSet exportSet, String name, boolean external) Get a complete export, with all values
String	toString()

Methods inherited from class org.apache.slider.core.registry.retrieve.AMWebClient

exec, exec, get, getRestClient, resource

Methods inherited from class java.lang.Object

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

Constructor Detail

RegistryRetriever

public RegistryRetriever(org.apache.hadoop.conf.Configuration conf,
                 org.apache.hadoop.registry.client.types.ServiceRecord record)
                  throws org.apache.hadoop.registry.client.exceptions.RegistryIOException

Retrieve from a service by locating the exported CustomRegistryConstants.PUBLISHER_CONFIGURATIONS_API and working off it.

Parameters:

conf - configuration to work from

record - service record

Throws:

org.apache.hadoop.registry.client.exceptions.RegistryIOException - the address type of the endpoint does not match that expected (i.e. not a list of URLs), missing endpoint...

Method Detail

hasConfigurations

public boolean hasConfigurations(boolean external)

Does a bonded registry retriever have a configuration?

Parameters:

external - flag to indicate that it is the external entries to fetch

Returns:

true if there is a URL to the configurations defined

getConfigurations

public PublishedConfigSet getConfigurations(boolean external)
                                     throws FileNotFoundException,
                                            IOException

Get the configurations of the registry

Parameters:

external - flag to indicate that it is the external entries to fetch

Returns:

the configuration sets

Throws:

FileNotFoundException

IOException

getConfigurationURL

protected String getConfigurationURL(boolean external)
                              throws FileNotFoundException

Throws:

FileNotFoundException

getExportURL

protected String getExportURL(boolean external)
                       throws FileNotFoundException

Throws:

FileNotFoundException

getExports

public PublishedExportsSet getExports(boolean external)
                               throws FileNotFoundException,
                                      IOException

Get the configurations of the registry

Parameters:

external - flag to indicate that it is the external entries to fetch

Returns:

the configuration sets

Throws:

FileNotFoundException

IOException

retrieveConfiguration

public PublishedConfiguration retrieveConfiguration(PublishedConfigSet configSet,
                                           String name,
                                           boolean external)
                                             throws IOException

Get a complete configuration, with all values

Parameters:

configSet - config set to ask for

name - name of the configuration

external - flag to indicate that it is an external configuration

Returns:

the retrieved config

Throws:

IOException - IO problems

retrieveExports

public PublishedExports retrieveExports(PublishedExportsSet exportSet,
                               String name,
                               boolean external)
                                 throws IOException

Get a complete export, with all values

Parameters:

exportSet -

name - name of the configuration

external - flag to indicate that it is an external configuration

Returns:

the retrieved config

Throws:

IOException - IO problems

toString

public String toString()

Overrides:

toString in class Object