com.bigdata.rdf.sail.webapp.lbs

Class ServiceScore

java.lang.Object

com.bigdata.rdf.sail.webapp.lbs.ServiceScore

public class ServiceScore
extends Object

Helper class caches metadata about an HAGlue service.

Field Summary

Fields

Modifier and Type	Field and Description
CAT	nrequests The #of requests that have been directed to this service.

Method Summary

Methods

Modifier and Type	Method and Description
String	getHostname() The hostname for the remote service -or- null if something goes wrong.
String	getRequestURI() The Request-URI for the root of the web application on the target host.
UUID	getServiceUUID() The service UUID for the remote service.
static ServiceScore	newInstance(IIndexManager indexManager, String contextPath, UUID serviceUUID) Factory for ServiceScore instances.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

nrequests

public final CAT nrequests

The #of requests that have been directed to this service.

Method Detail

getServiceUUID

public UUID getServiceUUID()

The service UUID for the remote service.

See Also:

IService.getServiceUUID()

getHostname

public String getHostname()

The hostname for the remote service -or- null if something goes wrong.

See Also:

IService.getHostname()

getRequestURI

public String getRequestURI()

The Request-URI for the root of the web application on the target host. This is assigned IFF everything succeeds. This is what we will use to proxy a request to the service having the UUID given to the constructor.

Note: This needs to be a URL, not just a relative path. Otherwise you get an NPE.

This is formed as:

 requestURI = "http://" + hostname + ":" + port + contextPath;
 

The hostname is obtained from IService.getHostname().

The port is obtained from HAGlue.getNSSPort(). TODO How do we configure the protocol for the remote NSS instance? This code assumes that it is http, but https is also possible. This could be handled by an IHARequestURIRewriter but maybe the HAGlue interface should be declaring this too?

toString

public String toString()

Overrides:

toString in class Object

newInstance

public static ServiceScore newInstance(IIndexManager indexManager,
                       String contextPath,
                       UUID serviceUUID)
                                throws IllegalArgumentException,
                                       ClassCastException,
                                       IOException,
                                       RuntimeException

Factory for ServiceScore instances.

Parameters:

indexManager - The index manager (required).

contextPath - The Context-Path of the web application (/bigdata).

serviceUUID - The UUID of the service.

Returns:

The ServiceScore.

Throws:

IllegalArgumentException - if any argument is null.

ClassCastException - if the IIndexManager is not an HAJournal.

IOException - If an RMI to the HAGlue proxy fails.

RuntimeException - if anything else goes wrong.