/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package gobblin.runtime.api;
import java.net.URI;
import java.util.Map;
import gobblin.annotation.Alpha;
/**
* Early alpha of the scheduler interface which is responsible of deciding when to run next the
* GobblinJob identified by a JobSpec. The scheduler maintains one {@link JobSpecSchedule} per
* JobSpec URI. Which means that scheduling a new version of JobSpec will override the schedule of
* the previous version.
*
* The scheduler is fire-and-forget. It is caller's responsibility (typically,
* {@link GobblinInstanceDriver}) to keep track of the outcome of the execution.
*/
@Alpha
public interface JobSpecScheduler extends JobSpecSchedulerListenersContainer {
/**
* Add a Gobblin job for scheduling. If the job is configured appropriately (scheduler-dependent),
* it will be executed repeatedly.
*
* @param jobSpec the JobSpec of the job
* @param jobRunnable a runnable that will execute the job
*/
public JobSpecSchedule scheduleJob(JobSpec jobSpec, Runnable jobRunnable);
/**
* Add a Gobblin job for scheduling. Job is guaranteed to run only once regardless of job outcome.
*
* @param jobSpec the JobSpec of the job
* @param jobRunnable a runnable that will execute the job
*/
public JobSpecSchedule scheduleOnce(JobSpec jobSpec, Runnable jobRunnable);
/**
* Remove a job from scheduling. This will not affect any executions that are currently running.
* @param jobSpecURI the URI of the Gobblin job to unschedule.
* */
public void unscheduleJob(URI jobSpecURI);
/** The outstanding job schedules. This is represents a snapshot in time and will not be updated
* as new schedules are added/removed.
* @return a map with the URIs of the scheduled jobs for keys and the schedules for values */
public Map<URI, JobSpecSchedule> getSchedules();
}