Package net.sf.basedb.opengrid.engine

Class DirectEngine

java.lang.Object

net.sf.basedb.opengrid.engine.DirectEngine

All Implemented Interfaces:

ClusterEngine

public class DirectEngine
extends Object
implements ClusterEngine

Engine implementation for servers without a job manager. Jobs are stared immediately when submitted. Intended to be used for development and testing only.

Since:

1.5

Author:

nicklas

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DirectEngine.ProcessJobStatus	Job status information for direct jobs.
static class	DirectEngine.StatusCmd	Implementation for getting information about a running or finished job.

Field Summary

Fields

Modifier and Type	Field	Description
private static ExtensionsLogger	logger

Constructor Summary

Constructors

Constructor	Description
DirectEngine()

Method Summary

Modifier and Type	Method	Description
CmdResult<String>	cancelJob(OpenGridSession session, JobIdentifier jobId)	Tell the cluster that a running or waiting job should be cancelled.
String	createJobScript(JobDefinition job, String workFolder, String tmpFolder)	Generates a script that executes the job script.
JobSubmission	createJobSubmission(OpenGridSession session, JobDefinition job, String workFolder, String tmpFolder)	Create a job submission for executing a job on the cluster.
private UploadSource	createOptionsFile(OpenGridSession session, JobDefinition job, String workFolder, String tmpFolder)
private static String	getJobStatusPath(OpenGridSession session, String jobId)	Get the path to where the status information for a job is saved.
private UploadSource	getScript(String name)
CmdResult<JobStatus>	getStatusIfFinished(OpenGridSession session, JobIdentifier jobId, int timeAdjustment)	Get information about a job that is expected to have finished.
CmdResult<JobStatus>	getStatusInQueue(OpenGridSession session, JobIdentifier jobId, int timeAdjustment)	Get information about a job that is expected to be waiting in the queue or running.
void	setDefaultConfig(ClusterConfig config)	Set default configuration parameters on the given configuration object.

Methods inherited from class java.lang.Object

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

Field Details

logger

private static final ExtensionsLogger logger

Constructor Details

DirectEngine

public DirectEngine()

Method Details

setDefaultConfig

public void setDefaultConfig(ClusterConfig config)

Description copied from interface: ClusterEngine

Set default configuration parameters on the given configuration object. It is expected that the ClusterConfig.getType() is a type that is compatible with the engine implementation.

Specified by:

setDefaultConfig in interface ClusterEngine

createJobSubmission

public JobSubmission createJobSubmission(OpenGridSession session,
JobDefinition job,
String workFolder,
String tmpFolder)

Description copied from interface: ClusterEngine

Create a job submission for executing a job on the cluster.

Specified by:

createJobSubmission in interface ClusterEngine

Parameters:

session - A connected session that can be used to execute commands on the cluster

job - Information about the job

workFolder - The work folder where files needed for the job are stored

tmpFolder - A temporary folder where the job is allowed to store files

Returns:

A JobSubmission instance

getStatusInQueue

public CmdResult<JobStatus> getStatusInQueue(OpenGridSession session,
JobIdentifier jobId,
int timeAdjustment)

Description copied from interface: ClusterEngine

Get information about a job that is expected to be waiting in the queue or running. If this is not the case, the CmdResult should return with exit status set to 1.

Specified by:

getStatusInQueue in interface ClusterEngine

Parameters:

session - A connected session that can be used to execute commands on the cluster

jobId - Job identifier

timeAdjustment - Adjustment in seconds that should be applied to all times returned by commands on the cluster (this will make times compatible with BASE server)

Returns:

A CmdResult instance with JobStatus information

getStatusIfFinished

public CmdResult<JobStatus> getStatusIfFinished(OpenGridSession session,
JobIdentifier jobId,
int timeAdjustment)

Description copied from interface: ClusterEngine

Get information about a job that is expected to have finished.

Specified by:

getStatusIfFinished in interface ClusterEngine

Parameters:

session - A connected session that can be used to execute commands on the cluster

jobId - Job identifier

timeAdjustment - Adjustment in seconds that should be applied to all times returned by commands on the cluster (this will make times compatible with BASE server)

Returns:

A CmdResult instance with JobStatus information

cancelJob

public CmdResult<String> cancelJob(OpenGridSession session,
JobIdentifier jobId)

Description copied from interface: ClusterEngine

Tell the cluster that a running or waiting job should be cancelled.

Specified by:

cancelJob in interface ClusterEngine

Parameters:

session - A connected session that can be used to execute commands on the cluster

jobId - Job identifier

Returns:

The result of executing the command

createOptionsFile

private UploadSource createOptionsFile(OpenGridSession session,
JobDefinition job,
String workFolder,
String tmpFolder)

getScript

private UploadSource getScript(String name)

getJobStatusPath

private static String getJobStatusPath(OpenGridSession session,
String jobId)

Get the path to where the status information for a job is saved.

createJobScript

public String createJobScript(JobDefinition job,
String workFolder,
String tmpFolder)

Generates a script that executes the job script.