com.netflix.genie.web.tasks.job

Class JobMonitoringCoordinator

java.lang.Object

com.netflix.genie.core.services.impl.JobStateServiceImpl

com.netflix.genie.web.tasks.job.JobMonitoringCoordinator

All Implemented Interfaces:

JobMetricsService, JobStateService

@Component
 @Primary
public class JobMonitoringCoordinator
extends JobStateServiceImpl

A Task to monitor running jobs on a Genie node.

Since:

3.0.0

Field Summary

Fields inherited from class com.netflix.genie.core.services.impl.JobStateServiceImpl

publisher, registry, scheduler

Constructor Summary

Constructors

Constructor and Description

JobMonitoringCoordinator(java.lang.String hostName, JobSearchService jobSearchService, org.springframework.context.ApplicationEventPublisher publisher, org.springframework.context.event.ApplicationEventMulticaster eventMulticaster, org.springframework.scheduling.TaskScheduler scheduler, org.apache.commons.exec.Executor executor, com.netflix.spectator.api.Registry registry, org.springframework.core.io.Resource jobsDir, JobsProperties jobsProperties, JobSubmitterService jobSubmitterService) Constructor.

Method Summary

Modifier and Type	Method and Description
void	onJobFinished(JobFinishedEvent event) When a job is finished this event is fired.
void	onJobStarted(JobStartedEvent event) This event is fired when a job is started on this Genie node.
void	onStartup(org.springframework.context.event.ContextRefreshedEvent event) When this application is fully up and running this method should be triggered by an event.

Methods inherited from class com.netflix.genie.core.services.impl.JobStateServiceImpl

done, getNumActiveJobs, getUsedMemory, init, jobExists, schedule, setMemoryAndTask

Methods inherited from class java.lang.Object

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

Constructor Detail

JobMonitoringCoordinator

@Autowired
public JobMonitoringCoordinator(java.lang.String hostName,
                                           JobSearchService jobSearchService,
                                           org.springframework.context.ApplicationEventPublisher publisher,
                                           org.springframework.context.event.ApplicationEventMulticaster eventMulticaster,
                                           org.springframework.scheduling.TaskScheduler scheduler,
                                           org.apache.commons.exec.Executor executor,
                                           com.netflix.spectator.api.Registry registry,
                                           org.springframework.core.io.Resource jobsDir,
                                           JobsProperties jobsProperties,
                                           JobSubmitterService jobSubmitterService)
                                    throws java.io.IOException

Constructor.

Parameters:

hostName - The name of the host this Genie process is running on

jobSearchService - The search service to use to find jobs

publisher - The application event publisher to use to publish synchronous events

eventMulticaster - The event eventMulticaster to use to publish asynchronous events

scheduler - The task scheduler to use to register scheduling of job checkers

executor - The executor to use to launch processes

registry - The metrics registry

jobsDir - The directory where job output is stored

jobsProperties - The properties pertaining to jobs

jobSubmitterService - implementation of the job submitter service

Throws:

java.io.IOException - on error with the filesystem

Method Detail

onStartup

@EventListener
public void onStartup(org.springframework.context.event.ContextRefreshedEvent event)
                              throws GenieException

When this application is fully up and running this method should be triggered by an event. It will query the database to find any jobs already running on this node that aren't in the map. The use case for this is if the Genie application crashes when it comes back up it can find the jobs again and not leave them orphaned.

Parameters:

event - The spring ready event indicating the application is ready to start taking load

Throws:

GenieException - on unrecoverable error

onJobStarted

@EventListener
public void onJobStarted(JobStartedEvent event)

This event is fired when a job is started on this Genie node. Will create a JobMonitor and schedule it for monitoring.

Parameters:

event - The event of the started job

onJobFinished

@EventListener
public void onJobFinished(JobFinishedEvent event)
                                  throws GenieException

When a job is finished this event is fired. This method will cancel the task monitoring the job process.

Parameters:

event - the event of the finished job

Throws:

GenieException - When a job execution can't be found (should never happen)