/*******************************************************************************
* Copyright (c) 2006-2013 Nuxeo SA (http://nuxeo.com/) and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*******************************************************************************/
package org.nuxeo.ecm.core.work.api;
import java.io.Serializable;
import javax.management.MXBean;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.nuxeo.runtime.api.Framework;
@MXBean
public class WorkSchedulePath implements Serializable {
private static final long serialVersionUID = 1L;
protected static final transient ThreadLocal<Work> enteredLocal = new ThreadLocal<Work>();
public static final Log log = LogFactory.getLog(WorkSchedulePath.class);
public static boolean captureStack = Boolean.parseBoolean(Framework.getProperty("work.schedule.captureStack", "false")) ||
log.isTraceEnabled();
public static WorkSchedulePath EMPTY = new WorkSchedulePath();
protected final String parentPath;
protected final String name;
protected final transient Trace scheduleStackTrace;
public class Trace extends Throwable {
private static final long serialVersionUID = 1L;
protected Trace(Trace cause) {
super(getPath(), cause);
}
public WorkSchedulePath path() {
return WorkSchedulePath.this;
}
}
public static void toggleCaptureStack() {
captureStack = !captureStack;
}
public static boolean isCaptureStackEnabled() {
return captureStack;
}
public static void newInstance(Work work) {
Work entered = enteredLocal.get();
WorkSchedulePath path = new WorkSchedulePath(entered == null ? EMPTY : entered.getSchedulePath(), work);
work.setSchedulePath(path);
}
public static void handleEnter(Work work) {
if (enteredLocal.get() != null) {
throw new AssertionError("thread local leak, chain should not be re-rentrant");
}
enteredLocal.set(work);
}
public static void handleReturn() {
enteredLocal.remove();
}
protected static String path(WorkSchedulePath parent) {
if (EMPTY.equals(parent)) {
return "";
}
return parent.parentPath + "/" + parent.name;
}
protected static String name(Work work) {
return work.getCategory() + ":" + work.getId();
}
protected WorkSchedulePath() {
parentPath = "";
name = "";
scheduleStackTrace = null;
}
public boolean isRoot() {
return parentPath.isEmpty();
}
protected WorkSchedulePath(WorkSchedulePath parent, Work work) {
parentPath = parent.getPath();
name = name(work);
scheduleStackTrace = captureStack ? new Trace(parent.scheduleStackTrace) : null;
}
public String getPath() {
return path(this);
}
public String getParentPath() {
return parentPath;
}
public Trace getStack() {
return scheduleStackTrace;
}
@Override
public String toString() {
return "[parentPath=" + parentPath + ", name=" + name + "]";
}
}