| /* |
| * 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 org.apache.sling.distribution.trigger.impl; |
| |
| import javax.annotation.Nonnull; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.apache.sling.api.resource.LoginException; |
| import org.apache.sling.api.resource.ResourceResolver; |
| import org.apache.sling.api.resource.ResourceResolverFactory; |
| import org.apache.sling.commons.scheduler.ScheduleOptions; |
| import org.apache.sling.commons.scheduler.Scheduler; |
| import org.apache.sling.distribution.DistributionRequestType; |
| import org.apache.sling.distribution.SimpleDistributionRequest; |
| import org.apache.sling.distribution.agent.spi.DistributionAgent; |
| import org.apache.sling.distribution.common.DistributionException; |
| import org.apache.sling.distribution.trigger.DistributionRequestHandler; |
| import org.apache.sling.distribution.trigger.DistributionTrigger; |
| import org.apache.sling.distribution.util.impl.DistributionUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * {@link org.apache.sling.distribution.trigger.DistributionTrigger} to schedule distributions on a certain |
| * {@link DistributionAgent} |
| */ |
| public class ScheduledDistributionTrigger implements DistributionTrigger { |
| private final static String SCHEDULE_NAME = "scheduledEventTrigger"; |
| |
| |
| private final Logger log = LoggerFactory.getLogger(getClass()); |
| |
| private final DistributionRequestType distributionAction; |
| private final String path; |
| private final int secondsInterval; |
| |
| private final Scheduler scheduler; |
| private final String serviceName; |
| private final ResourceResolverFactory resourceResolverFactory; |
| |
| private final Set<String> registeredJobs = Collections.synchronizedSet(new HashSet<String>()); |
| |
| |
| public ScheduledDistributionTrigger(String distributionActionName, String path, int secondsInterval, String serviceName, Scheduler scheduler, ResourceResolverFactory resourceResolverFactory) { |
| this.serviceName = serviceName; |
| this.resourceResolverFactory = resourceResolverFactory; |
| this.distributionAction = DistributionRequestType.fromName(distributionActionName); |
| this.path = path; |
| this.secondsInterval = secondsInterval; |
| this.scheduler = scheduler; |
| |
| if (distributionAction == null) { |
| throw new IllegalArgumentException("unsupported action " + distributionActionName); |
| } |
| |
| if (path == null && |
| (DistributionRequestType.ADD.equals(distributionAction) |
| || DistributionRequestType.DELETE.equals(distributionAction))) { |
| |
| throw new IllegalArgumentException("path is required for action " + distributionActionName); |
| } |
| } |
| |
| public void register(@Nonnull DistributionRequestHandler requestHandler) throws DistributionException { |
| try { |
| ScheduleOptions options = scheduler.NOW(-1, secondsInterval); |
| String jobName = getJobName(requestHandler); |
| |
| options.name(jobName); |
| options.canRunConcurrently(false); |
| options.onLeaderOnly(true); |
| boolean success = scheduler.schedule(new ScheduledDistribution(requestHandler), options); |
| |
| if (success) { |
| registeredJobs.add(jobName); |
| |
| } |
| log.info("handler registered {} {}", jobName, success); |
| |
| } catch (Exception e) { |
| throw new DistributionException("unable to register handler " + requestHandler, e); |
| } |
| } |
| |
| public void unregister(@Nonnull DistributionRequestHandler requestHandler) throws DistributionException { |
| String jobName = getJobName(requestHandler); |
| |
| boolean success = scheduler.unschedule(jobName); |
| |
| if (success) { |
| registeredJobs.remove(jobName); |
| } |
| log.info("handler unregistered {} {}", jobName, success); |
| |
| |
| } |
| |
| public void disable() { |
| for (String jobName : registeredJobs) { |
| boolean result = scheduler.unschedule(jobName); |
| log.info("handler unregistered {} {}", jobName, result); |
| |
| } |
| } |
| |
| private class ScheduledDistribution implements Runnable { |
| private final DistributionRequestHandler requestHandler; |
| |
| public ScheduledDistribution(DistributionRequestHandler requestHandler) { |
| this.requestHandler = requestHandler; |
| } |
| |
| public void run() { |
| log.debug("agent {}: scheduling {} distribution of {}", new Object[]{requestHandler, distributionAction, path}); |
| |
| if (serviceName == null) { |
| requestHandler.handle(null, new SimpleDistributionRequest(distributionAction, path)); |
| } else { |
| ResourceResolver resourceResolver = null; |
| try { |
| resourceResolver = DistributionUtils.loginService(resourceResolverFactory, serviceName); |
| requestHandler.handle(resourceResolver, new SimpleDistributionRequest(distributionAction, path)); |
| } catch (LoginException le) { |
| log.error("cannot obtain resource resolver for {}", serviceName); |
| } finally { |
| DistributionUtils.safelyLogout(resourceResolver); |
| } |
| } |
| } |
| } |
| |
| private String getJobName(DistributionRequestHandler requestHandler) { |
| return SCHEDULE_NAME + requestHandler.toString(); |
| } |
| } |