/*
* Copyright (C) 2014 Red Hat, inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
package org.jboss.as.server.deployment;
import static org.jboss.as.controller.client.helpers.ClientConstants.FAILURE_DESCRIPTION;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.CANCELLED;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.FAILED;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.HOST;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.LOCAL_HOST_NAME;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.OUTCOME;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.RESULT;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.SUCCESS;
import java.io.IOException;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
import org.jboss.as.controller.ControlledProcessState;
import org.jboss.as.controller.ControlledProcessStateService;
import org.jboss.as.controller.PathAddress;
import org.jboss.as.controller.client.ModelControllerClient;
import org.jboss.as.controller.operations.common.Util;
import org.jboss.as.server.logging.ServerLogger;
import org.jboss.as.server.operations.CleanObsoleteContentHandler;
import org.jboss.dmr.ModelNode;
/**
* In charge with checking content references and syncing them with the content repository, removing to left over contents.
*
* @author <a href="mailto:ehugonne@redhat.com">Emmanuel Hugonnet</a> (c) 2014 Red Hat, inc.
*/
class ContentRepositoryCleaner {
private final ModelControllerClient client;
private final ControlledProcessStateService controlledProcessStateService;
private final ScheduledExecutorService scheduledExecutor;
private long cleanInterval = 0L;
private volatile boolean enabled;
private final boolean server;
private ScheduledFuture<?> cleanTask;
private final ContentRepositoryCleanerTask cleanRunnable = new ContentRepositoryCleanerTask();
private class ContentRepositoryCleanerTask implements Runnable {
@Override
public void run() {
cleanObsoleteContent();
}
}
public ContentRepositoryCleaner(ModelControllerClient client, ControlledProcessStateService controlledProcessStateService,
ScheduledExecutorService scheduledExecutor, long interval, boolean server) {
this.controlledProcessStateService = controlledProcessStateService;
this.client = client;
this.scheduledExecutor = scheduledExecutor;
this.enabled = true;
this.cleanInterval = interval;
this.server = server;
}
public boolean isEnabled() {
return enabled;
}
public long getCleanInterval() {
return cleanInterval;
}
/**
* Invoke with the object monitor held
*/
private void cancelScan() {
if (cleanTask != null) {
cleanTask.cancel(true);
cleanTask = null;
}
try {
client.close();
} catch (IOException ex) {
ServerLogger.ROOT_LOGGER.failedToStopRepositoryCleaner(ex);
}
}
synchronized void startScan() {
if (enabled) {
cleanTask = scheduledExecutor.scheduleWithFixedDelay(cleanRunnable, cleanInterval, cleanInterval, TimeUnit.MILLISECONDS);
}
}
/**
* {@inheritDoc}
*/
synchronized void stopScan() {
this.enabled = false;
cancelScan();
}
void cleanObsoleteContent() {
if (controlledProcessStateService.getCurrentState() == ControlledProcessState.State.RUNNING) {
try {
PathAddress address = PathAddress.EMPTY_ADDRESS;
if (!server) {
ModelNode response = client.execute(Util.getReadAttributeOperation(PathAddress.EMPTY_ADDRESS, LOCAL_HOST_NAME));
if (SUCCESS.equals(response.get(OUTCOME).asString()) && response.get(RESULT).isDefined()) {
address = address.append(HOST, response.get(RESULT).asString());
} else if (CANCELLED.equals(response.get(OUTCOME).asString())) {
return;
} else if (FAILED.equals(response.get(OUTCOME).asString())) {
error(response);
}
}
ModelNode response = client.execute(Util.createOperation(CleanObsoleteContentHandler.OPERATION_NAME, address));
if (SUCCESS.equals(response.get(OUTCOME).asString())) {
if(response.get(RESULT).isDefined()) {
ServerLogger.ROOT_LOGGER.debug(response.get(RESULT));
}
} else if (CANCELLED.equals(response.get(OUTCOME).asString())) {
return;
} else if (FAILED.equals(response.get(OUTCOME).asString())) {
error(response);
}
} catch (IOException e) {
ServerLogger.ROOT_LOGGER.failedToCleanObsoleteContent(e);
}
}
}
private void error(ModelNode response) {
if (response.hasDefined(FAILURE_DESCRIPTION)) {
ServerLogger.ROOT_LOGGER.failedToCleanObsoleteContent(response.get(FAILURE_DESCRIPTION).asString());
} else {
ServerLogger.ROOT_LOGGER.failedToCleanObsoleteContent(response.asString());
}
}
}