org.opencastproject.scheduler.impl.CaptureNowProlongingService Maven / Gradle / Ivy
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* Licensed to The Apereo Foundation under one or more contributor license
* agreements. See the NOTICE file distributed with this work for additional
* information regarding copyright ownership.
*
*
* The Apereo Foundation licenses this file to you under the Educational
* Community 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://opensource.org/licenses/ecl2.txt
*
* 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 org.opencastproject.scheduler.impl;
import static org.opencastproject.metadata.dublincore.DublinCore.PROPERTY_TEMPORAL;
import org.opencastproject.mediapackage.Catalog;
import org.opencastproject.mediapackage.MediaPackage;
import org.opencastproject.mediapackage.MediaPackageElements;
import org.opencastproject.metadata.dublincore.DCMIPeriod;
import org.opencastproject.metadata.dublincore.DublinCore;
import org.opencastproject.metadata.dublincore.DublinCoreCatalog;
import org.opencastproject.metadata.dublincore.DublinCoreUtil;
import org.opencastproject.metadata.dublincore.EncodingSchemeUtils;
import org.opencastproject.metadata.dublincore.Precision;
import org.opencastproject.scheduler.api.SchedulerException;
import org.opencastproject.scheduler.api.SchedulerService;
import org.opencastproject.security.api.Organization;
import org.opencastproject.security.api.OrganizationDirectoryService;
import org.opencastproject.security.api.SecurityService;
import org.opencastproject.security.api.UnauthorizedException;
import org.opencastproject.security.api.User;
import org.opencastproject.security.util.SecurityUtil;
import org.opencastproject.serviceregistry.api.ServiceRegistry;
import org.opencastproject.serviceregistry.api.ServiceRegistryException;
import org.opencastproject.util.NotFoundException;
import org.opencastproject.workspace.api.Workspace;
import com.entwinemedia.fn.data.Opt;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.joda.time.DateTime;
import org.osgi.service.cm.ConfigurationException;
import org.osgi.service.cm.ManagedService;
import org.osgi.service.component.ComponentContext;
import org.quartz.Job;
import org.quartz.JobDetail;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.quartz.Trigger;
import org.quartz.TriggerUtils;
import org.quartz.impl.StdSchedulerFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.net.URI;
import java.util.Date;
import java.util.Dictionary;
import java.util.List;
import java.util.Map;
import java.util.Set;
/** Prolong immediate recordings before reaching the end, as long as there are no conflicts */
public class CaptureNowProlongingService implements ManagedService {
/** Log facility */
private static final Logger logger = LoggerFactory.getLogger(CaptureNowProlongingService.class);
private static final String CFG_KEY_INITIAL_TIME = "initial-time";
private static final String CFG_KEY_PROLONGING_TIME = "prolonging-time";
private static final String JOB_NAME = "mh-capture-prolonging-job";
private static final String JOB_GROUP = "mh-capture-prolonging-job-group";
private static final String TRIGGER_GROUP = "mh-capture-prolonging-trigger-group";
private static final String JOB_PARAM_PARENT = "parent";
/** The initial time in millis */
private int initialTime = -1;
/** The prolonging time in millis */
private int prolongingTime = -1;
/** The quartz scheduler */
private org.quartz.Scheduler quartz;
/** The scheduler service */
private SchedulerService schedulerService;
/** The security service */
private SecurityService securityService;
/** The service registry */
private ServiceRegistry serviceRegistry;
/** The organization directory service */
private OrganizationDirectoryService orgDirectoryService;
/** The workspace */
private Workspace workspace;
/** The bundle context for this osgi component */
private ComponentContext componentContext;
/** Sets the scheduler service */
public void setSchedulerService(SchedulerService schedulerService) {
this.schedulerService = schedulerService;
}
/** Sets the security service */
public void setSecurityService(SecurityService securityService) {
this.securityService = securityService;
}
/** Sets the service registry */
public void setServiceRegistry(ServiceRegistry serviceRegistry) {
this.serviceRegistry = serviceRegistry;
}
/** Sets the organization directory service */
public void setOrgDirectoryService(OrganizationDirectoryService orgDirectoryService) {
this.orgDirectoryService = orgDirectoryService;
}
/** Sets the workspace */
public void setWorkspace(Workspace workspace) {
this.workspace = workspace;
}
/**
* Activates the component
*
* @param cc
* the component's context
*/
public void activate(ComponentContext cc) {
componentContext = cc;
try {
quartz = new StdSchedulerFactory().getScheduler();
quartz.start();
// create and set the job. To actually run it call schedule(..)
final JobDetail job = new JobDetail(JOB_NAME, JOB_GROUP, Runner.class);
job.setDurability(true);
job.setVolatility(true);
job.getJobDataMap().put(JOB_PARAM_PARENT, this);
quartz.addJob(job, true);
} catch (org.quartz.SchedulerException e) {
throw new RuntimeException(e);
}
}
/**
* Deactivates the component
*/
public void deactivate(ComponentContext cc) {
componentContext = null;
shutdown();
}
@Override
public void updated(Dictionary properties) throws ConfigurationException {
// Read configuration for the default initial duration
try {
initialTime = Integer.parseInt(StringUtils.defaultIfBlank((String) properties.get(CFG_KEY_INITIAL_TIME), "300"));
} catch (NumberFormatException e) {
throw new ConfigurationException(CFG_KEY_INITIAL_TIME, "Not an integer", e);
}
initialTime = Math.max(initialTime, 90) * 1000;
// Read configuration for the prolonging time
try {
prolongingTime = Integer.parseInt(
StringUtils.defaultIfBlank((String) properties.get(CFG_KEY_PROLONGING_TIME), "300"));
} catch (NumberFormatException e) {
throw new ConfigurationException(CFG_KEY_PROLONGING_TIME, "Not an integer", e);
}
prolongingTime = Math.max(prolongingTime, 90) * 1000;
}
/**
* Set the schedule and start or restart the scheduler.
*/
public void schedule(String agentId) throws org.quartz.SchedulerException {
logger.debug("Capture prolonging job for agent '{}' is run every minute.", agentId);
final Trigger trigger = TriggerUtils.makeMinutelyTrigger();
trigger.setStartTime(DateTime.now().plusMinutes(1).toDate());
trigger.setName(agentId);
trigger.setGroup(TRIGGER_GROUP);
trigger.setJobName(JOB_NAME);
trigger.setJobGroup(JOB_GROUP);
if (quartz.getTrigger(agentId, TRIGGER_GROUP) == null) {
quartz.scheduleJob(trigger);
} else {
quartz.rescheduleJob(agentId, TRIGGER_GROUP, trigger);
}
}
public void stop(String agentId) {
try {
quartz.unscheduleJob(agentId, TRIGGER_GROUP);
logger.info("Stopped prolonging capture for agent '{}'", agentId);
} catch (Exception e) {
logger.error("Error stopping Quartz job for agent '{}': {}", agentId, e);
}
}
/** Shutdown the scheduler. */
public void shutdown() {
try {
quartz.shutdown();
} catch (org.quartz.SchedulerException ignore) {
}
}
// just to make sure Quartz is being shut down...
@Override
protected void finalize() throws Throwable {
super.finalize();
shutdown();
}
/**
* Returns the initial time duration (in milliseconds) of a recording started by the CaptureNow service
*
* @return the initial time
*/
public int getInitialTime() {
return initialTime;
}
/**
* Returns the time duration (in milliseconds) a recording is prolonged by the prolonging job.
*
* @return the prolonging time
*/
public int getProlongingTime() {
return prolongingTime;
}
public SecurityService getSecurityService() {
return securityService;
}
public ComponentContext getComponentContext() {
return componentContext;
}
public ServiceRegistry getServiceRegistry() {
return serviceRegistry;
}
public OrganizationDirectoryService getOrgDirectoryService() {
return orgDirectoryService;
}
public Workspace getWorkspace() {
return workspace;
}
// --
/** Quartz work horse. */
public static class Runner implements Job {
@Override
public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {
logger.debug("Starting ad-hoc prolonging job for agent '{}'", jobExecutionContext.getTrigger().getName());
try {
execute((CaptureNowProlongingService) jobExecutionContext.getJobDetail().getJobDataMap().get(JOB_PARAM_PARENT),
jobExecutionContext.getTrigger().getName());
} catch (Exception e) {
throw new JobExecutionException("An error occurred while prolonging ad-hoc recordings", e);
}
logger.debug("Finished ad-hoc prolonging job for agent '{}'", jobExecutionContext.getTrigger().getName());
}
private void execute(final CaptureNowProlongingService prolongingService, final String agentId) {
for (Organization organization : prolongingService.getOrgDirectoryService().getOrganizations()) {
User user = SecurityUtil.createSystemUser(prolongingService.getComponentContext(), organization);
SecurityUtil.runAs(prolongingService.getSecurityService(), organization, user, () -> {
try {
MediaPackage mp = prolongingService.getCurrentRecording(agentId);
Opt dublinCore = DublinCoreUtil.loadEpisodeDublinCore(prolongingService.getWorkspace(),
mp);
if (dublinCore.isSome()
&& EncodingSchemeUtils.decodeMandatoryPeriod(dublinCore.get().getFirst(PROPERTY_TEMPORAL))
.getEnd().before(DateTime.now().plusSeconds(90).toDate())) {
prolong(prolongingService, mp, dublinCore.get(), agentId);
} else {
logger.debug("Wait another minute before extending the ad-hoc recording for agent '{}'", agentId);
}
} catch (NotFoundException e) {
logger.info("Unable to extend the ad-hoc recording for agent '{}': No ad-hoc recording found", agentId);
} catch (Exception e) {
logger.error("Error extending the ad-hoc recording for agent '{}': {}", agentId, e);
}
});
}
}
private void prolong(final CaptureNowProlongingService prolongingService, final MediaPackage event,
final DublinCoreCatalog dublinCore, final String agentId)
throws NotFoundException, ServiceRegistryException {
try {
logger.info("Extending ad-hoc recording for agent '{}'", agentId);
prolongingService.prolongEvent(event, dublinCore, agentId);
} catch (UnauthorizedException e) {
logger.error("Error extending the ad-hoc recording for agent '{}': Permission denied", agentId);
} catch (NotFoundException e) {
logger.warn("Error extending the ad-hoc recording for agent '{}': No ad-hoc recording found", agentId);
} catch (Exception e) {
logger.error("Error extending the ad-hoc recording for agent '{}': {}", agentId, e);
}
}
}
/**
* Returns the current event for the given capture agent.
*
* @param agentId
* the capture agent
* @return the recording
* @throws NotFoundException
* if the there is no current recording
* @throws UnauthorizedException
* if the event cannot be read due to a lack of access rights
* @throws SchedulerException
* if accessing the scheduling database fails
*/
public MediaPackage getCurrentRecording(String agentId)
throws NotFoundException, UnauthorizedException, SchedulerException {
Opt current = schedulerService.getCurrentRecording(agentId);
if (current.isNone()) {
logger.warn("Unable to load the current recording for agent '{}': no recording found", agentId);
throw new NotFoundException("No current recording found for agent '" + agentId + "'");
}
return current.get();
}
/**
* Extends the current recording.
*
* @param event
* the recording's media package
* @param dublinCore
* the recording's dublin core catalog
* @param agentId
* the agent
* @throws UnauthorizedException
* if the event cannot be updated due to a lack of access rights
* @throws NotFoundException
* if the event cannot be found
* @throws SchedulerException
* if updating the scheduling data fails
* @throws IOException
* if updating the calendar to the worksapce fails
* @throws IllegalArgumentException
* if a URI cannot be created using the arguments provided
*/
public void prolongEvent(MediaPackage event, DublinCoreCatalog dublinCore, String agentId)
throws UnauthorizedException, NotFoundException, SchedulerException, IllegalArgumentException, IOException {
String eventId = event.getIdentifier().toString();
DCMIPeriod period = EncodingSchemeUtils.decodeMandatoryPeriod(dublinCore.getFirst(DublinCore.PROPERTY_TEMPORAL));
Date prolongedEndDate = new DateTime(period.getEnd()).plus(getProlongingTime()).toDate();
dublinCore.set(PROPERTY_TEMPORAL,
EncodingSchemeUtils.encodePeriod(new DCMIPeriod(period.getStart(), prolongedEndDate), Precision.Second));
List events = schedulerService.findConflictingEvents(agentId, period.getStart(), prolongedEndDate);
for (MediaPackage conflictMediaPackage : events) {
if (eventId.equals(conflictMediaPackage.getIdentifier().toString()))
continue;
Opt conflictingDc = DublinCoreUtil.loadEpisodeDublinCore(workspace, conflictMediaPackage);
if (conflictingDc.isNone())
continue;
Date conflictingStartDate = EncodingSchemeUtils
.decodeMandatoryPeriod(conflictingDc.get().getFirst(DublinCore.PROPERTY_TEMPORAL)).getStart();
prolongedEndDate = new DateTime(conflictingStartDate).minusMinutes(1).toDate();
dublinCore.set(PROPERTY_TEMPORAL,
EncodingSchemeUtils.encodePeriod(new DCMIPeriod(period.getStart(), prolongedEndDate), Precision.Second));
logger.info(
"A scheduled event is preventing the current recording on agent '{}' to be further extended. Extending to one minute before the conflicting event",
agentId);
stop(agentId);
break;
}
// Update the episode dublin core
Catalog[] episodeCatalogs = event.getCatalogs(MediaPackageElements.EPISODE);
if (episodeCatalogs.length > 0) {
Catalog c = episodeCatalogs[0];
String filename = FilenameUtils.getName(c.getURI().toString());
URI uri = workspace.put(event.getIdentifier().toString(), c.getIdentifier(), filename,
IOUtils.toInputStream(dublinCore.toXmlString(), "UTF-8"));
c.setURI(uri);
// setting the URI to a new source so the checksum will most like be invalid
c.setChecksum(null);
}
schedulerService.updateEvent(eventId, Opt. none(), Opt.some(prolongedEndDate), Opt. none(),
Opt.> none(), Opt.some(event), Opt.> none(),
Opt.> none());
}
}
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