ds.granules.scheduler

Class Resource

java.lang.Object

ds.granules.scheduler.Resource

public final class Resource
extends java.lang.Object

This is a class which encapsulates the functionality of a computational resource. In most cases, one instance of this class needs to run every machine within the computational cloud. The Resource is implemented as a singleton; only one instance should exist in a given Java VM, but may provide multiple computational threads.

Author:

Shrideep Pallickara

Method Summary

Modifier and Type	Method and Description
Diagnostics	getDiagnostics() Provides diagnostic information for this Resource.
static Resource	getInstance() Retrieves singleton instance of the Resource.
java.util.Properties	getProperties() Retrieves Resource streaming properties.
static void	main(java.lang.String[] args) Main entry point for a Granules computational resource.

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static Resource getInstance()

Retrieves singleton instance of the Resource.

Returns:

Reference to the singleton Resource instance.

Throws:

java.lang.NullPointerException - if the Resource has not be initialized

getDiagnostics

public Diagnostics getDiagnostics()

Provides diagnostic information for this Resource.

Returns:

Diagnostics for the Resource

getProperties

public java.util.Properties getProperties()

Retrieves Resource streaming properties.

main

public static void main(java.lang.String[] args)

Main entry point for a Granules computational resource. Configuring a resource can be done in three ways: 1. Edit the config/ResourceConfig.txt file 2. Specify an alternate config file as the first argument to the Resource 3. Use System Properties to specify resource parameters. These can include the following: - hostname - portnum - transport - number-of-threads If System Properties are specified, they override any parameters specified in the configuration files.

Parameters:

args -