001/*
002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     bstefanescu, jcarsique
018 */
019package org.nuxeo.runtime.tomcat;
020
021import java.io.File;
022import java.io.IOException;
023import javax.management.JMException;
024import org.apache.catalina.Container;
025import org.apache.catalina.Lifecycle;
026import org.apache.catalina.LifecycleEvent;
027import org.apache.catalina.LifecycleListener;
028import org.apache.catalina.Loader;
029import org.apache.catalina.core.ContainerBase;
030import org.apache.catalina.util.ServerInfo;
031import org.apache.commons.logging.Log;
032import org.apache.commons.logging.LogFactory;
033import org.nuxeo.osgi.application.FrameworkBootstrap;
034import org.nuxeo.osgi.application.MutableClassLoader;
035import org.nuxeo.runtime.tomcat.dev.DevFrameworkBootstrap;
036import org.nuxeo.runtime.tomcat.dev.NuxeoDevWebappClassLoader;
037
038/**
039 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
040 */
041public class NuxeoLauncher implements LifecycleListener {
042
043    static final Log log = LogFactory.getLog(NuxeoLauncher.class);
044
045    protected boolean shared; // TODO
046
047    protected String home = "nxserver";
048
049    protected boolean automaticReload = true;
050
051    protected FrameworkBootstrap bootstrap;
052
053    public void setShared(boolean shared) {
054        this.shared = shared;
055    }
056
057    public boolean isShared() {
058        return shared;
059    }
060
061    public void setHome(String home) {
062        this.home = home;
063    }
064
065    public String getHome() {
066        return home;
067    }
068
069    public void setAutomaticReload(boolean value) {
070        automaticReload = value;
071    }
072
073    public boolean getAutomaticReload() {
074        return automaticReload;
075    }
076
077    @Override
078    public void lifecycleEvent(LifecycleEvent event) {
079        Lifecycle lf = event.getLifecycle();
080        if (lf instanceof ContainerBase) {
081            Loader loader = ((Container) lf).getLoader();
082            if (loader instanceof NuxeoWebappLoader) {
083                handleEvent((NuxeoWebappLoader) loader, event);
084            }
085        }
086    }
087
088    protected void handleEvent(NuxeoWebappLoader loader, LifecycleEvent event) {
089        String type = event.getType();
090        try {
091            MutableClassLoader cl = (MutableClassLoader) loader.getClassLoader();
092            boolean devMode = cl instanceof NuxeoDevWebappClassLoader;
093            if (type == Lifecycle.CONFIGURE_START_EVENT) {
094                File homeDir = resolveHomeDirectory(loader);
095                if (devMode) {
096                    bootstrap = new DevFrameworkBootstrap(cl, homeDir);
097                    ((NuxeoDevWebappClassLoader) cl).setBootstrap((DevFrameworkBootstrap) bootstrap);
098                } else {
099                    bootstrap = new FrameworkBootstrap(cl, homeDir);
100                }
101                bootstrap.setHostName("Tomcat");
102                bootstrap.setHostVersion(ServerInfo.getServerNumber());
103                bootstrap.initialize();
104            } else if (type == Lifecycle.START_EVENT) {
105                bootstrap.start(cl);
106            } else if (type == Lifecycle.STOP_EVENT) {
107                bootstrap.stop(cl);
108            }
109        } catch (IOException | JMException | ReflectiveOperationException e) {
110            log.error("Failed to handle event: " + type, e);
111        }
112    }
113
114    protected File resolveHomeDirectory(NuxeoWebappLoader loader) {
115        String path = null;
116        if (home.startsWith("/") || home.startsWith("\\") || home.contains(":/") || home.contains(":\\")) {
117            // absolute
118            path = home;
119        } else if (home.startsWith("${catalina.base}")) {
120            path = getTomcatHome() + home.substring("${catalina.base}".length());
121        } else {
122            try {
123                File baseDir = loader.getBaseDir();
124                return new File(baseDir, home);
125            } catch (ReflectiveOperationException e) {
126                return null;
127            }
128        }
129        return new File(path);
130    }
131
132    public String getTomcatHome() {
133        String tomcatHome = System.getProperty("catalina.base");
134        if (tomcatHome == null) {
135            tomcatHome = System.getProperty("catalina.home");
136        }
137        return tomcatHome;
138    }
139
140}