org.apache.ambari.server.controller.internal

Class Extension

java.lang.Object

org.apache.ambari.server.controller.internal.Extension

public class Extension
extends Object

Encapsulates extension information. An extension version is like a stack version but it contains custom services. Linking an extension version to the current stack version allows the cluster to install the custom services contained in the extension version.

Constructor Summary

Constructors

Constructor and Description
Extension(ExtensionEntity extension, AmbariManagementController ambariManagementController) Constructor.
Extension(String name, String version, AmbariManagementController controller) Constructor.

Method Summary

Modifier and Type	Method and Description
AutoDeployInfo	getAutoDeployInfo(String component) Obtain auto-deploy information for the specified component.
Cardinality	getCardinality(String component) Obtain the required cardinality for the specified component.
ComponentInfo	getComponentInfo(String component) Get info for the specified component.
Map<String,Collection<String>>	getComponents() Get all service components
Collection<String>	getComponents(String service) Get components contained in the extension for the specified service.
String	getConditionalServiceForDependency(DependencyInfo dependency) Get the service, if any, that a component dependency is conditional on.
Collection<DependencyInfo>	getDependenciesForComponent(String component) Return the dependencies specified for the given component.
String	getExternalComponentConfig(String component)
String	getName() Obtain extension name.
String	getServiceForComponent(String component) Get the service for the specified component.
Collection<String>	getServices() Get services contained in the extension.
Collection<String>	getServicesForComponents(Collection<String> components) Get the names of the services which contains the specified components.
String	getVersion() Obtain extension version.

Methods inherited from class java.lang.Object

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

Constructor Detail

Extension

public Extension(ExtensionEntity extension,
                 AmbariManagementController ambariManagementController)
          throws org.apache.ambari.server.AmbariException

Constructor.

Parameters:

extension - the extension (not null).

ambariManagementController - the management controller (not null).

Throws:

org.apache.ambari.server.AmbariException

Extension

public Extension(String name,
                 String version,
                 AmbariManagementController controller)
          throws org.apache.ambari.server.AmbariException

Constructor.

Parameters:

name - extension name

version - extension version

Throws:

org.apache.ambari.server.AmbariException - an exception occurred getting extension information for the specified name and version

Method Detail

getName

public String getName()

Obtain extension name.

Returns:

extension name

getVersion

public String getVersion()

Obtain extension version.

Returns:

extension version

getServices

public Collection<String> getServices()

Get services contained in the extension.

Returns:

collection of all services for the extension

getComponents

public Collection<String> getComponents(String service)

Get components contained in the extension for the specified service.

Parameters:

service - service name

Returns:

collection of component names for the specified service

getComponents

public Map<String,Collection<String>> getComponents()

Get all service components

Returns:

map of service to associated components

getComponentInfo

public ComponentInfo getComponentInfo(String component)

Get info for the specified component.

Parameters:

component - component name

Returns:

component information for the requested component or null if the component doesn't exist in the extension

getServiceForComponent

public String getServiceForComponent(String component)

Get the service for the specified component.

Parameters:

component - component name

Returns:

service name that contains tha specified component

getServicesForComponents

public Collection<String> getServicesForComponents(Collection<String> components)

Get the names of the services which contains the specified components.

Parameters:

components - collection of components

Returns:

collection of services which contain the specified components

getDependenciesForComponent

public Collection<DependencyInfo> getDependenciesForComponent(String component)

Return the dependencies specified for the given component.

Parameters:

component - component to get dependency information for

Returns:

collection of dependency information for the specified component

getConditionalServiceForDependency

public String getConditionalServiceForDependency(DependencyInfo dependency)

Get the service, if any, that a component dependency is conditional on.

Parameters:

dependency - dependency to get conditional service for

Returns:

conditional service for provided component or null if dependency is not conditional on a service

getExternalComponentConfig

public String getExternalComponentConfig(String component)

getCardinality

public Cardinality getCardinality(String component)

Obtain the required cardinality for the specified component.

getAutoDeployInfo

public AutoDeployInfo getAutoDeployInfo(String component)

Obtain auto-deploy information for the specified component.