Java Engine类代码示例

import org.apache.catalina.Engine; //导入依赖的package包/类
private void populateSessionTrackingModes() {
	// URL re-writing is always enabled by default
	defaultSessionTrackingModes = EnumSet.of(SessionTrackingMode.URL);
	supportedSessionTrackingModes = EnumSet.of(SessionTrackingMode.URL);

	if (context.getCookies()) {
		defaultSessionTrackingModes.add(SessionTrackingMode.COOKIE);
		supportedSessionTrackingModes.add(SessionTrackingMode.COOKIE);
	}

	// SSL not enabled by default as it can only used on its own
	// Context > Host > Engine > Service
	Service s = ((Engine) context.getParent().getParent()).getService();
	Connector[] connectors = s.findConnectors();
	// Need at least one SSL enabled connector to use the SSL session ID.
	for (Connector connector : connectors) {
		if (Boolean.TRUE.equals(connector.getAttribute("SSLEnabled"))) {
			supportedSessionTrackingModes.add(SessionTrackingMode.SSL);
			break;
		}
	}
}
 

import org.apache.catalina.Engine; //导入依赖的package包/类
/**
 * Return a File object representing the "configuration root" directory
 * for our associated Host.
 */
protected File configBase() {

    if (configBase != null) {
        return configBase;
    }

    if (host.getXmlBase()!=null) {
        configBase = returnCanonicalPath(host.getXmlBase());
    } else {
        StringBuilder xmlDir = new StringBuilder("conf");
        Container parent = host.getParent();
        if (parent instanceof Engine) {
            xmlDir.append('/');
            xmlDir.append(parent.getName());
        }
        xmlDir.append('/');
        xmlDir.append(host.getName());
        configBase = returnCanonicalPath(xmlDir.toString());
    }
    return (configBase);

}
 

import org.apache.catalina.Engine; //导入依赖的package包/类
@Override
public void startInternal() throws LifecycleException {

	setState(LifecycleState.STARTING);

	// Find any components that have already been initialized since the
	// MBean listener won't be notified as those components will have
	// already registered their MBeans
	findDefaultHost();

	Engine engine = (Engine) connector.getService().getContainer();
	addListeners(engine);

	Container[] conHosts = engine.findChildren();
	for (Container conHost : conHosts) {
		Host host = (Host) conHost;
		if (!LifecycleState.NEW.equals(host.getState())) {
			// Registering the host will register the context and wrappers
			registerHost(host);
		}
	}
}
 

import org.apache.catalina.Engine; //导入依赖的package包/类
/**
 * Process the START event for an associated Engine.
 *
 * @param event The lifecycle event that has occurred
 */
@Override
public void lifecycleEvent(LifecycleEvent event) {

    // Identify the engine we are associated with
    try {
        engine = (Engine) event.getLifecycle();
    } catch (ClassCastException e) {
        log.error(sm.getString("engineConfig.cce", event.getLifecycle()), e);
        return;
    }

    // Process the event that has occurred
    if (event.getType().equals(Lifecycle.START_EVENT))
        start();
    else if (event.getType().equals(Lifecycle.STOP_EVENT))
        stop();

}
 

import org.apache.catalina.Engine; //导入依赖的package包/类
@Override
public void startInternal() throws LifecycleException {

    setState(LifecycleState.STARTING);

    // Find any components that have already been initialized since the
    // MBean listener won't be notified as those components will have
    // already registered their MBeans
    findDefaultHost();

    Engine engine = (Engine) connector.getService().getContainer();
    addListeners(engine);

    Container[] conHosts = engine.findChildren();
    for (Container conHost : conHosts) {
        Host host = (Host) conHost;
        if (!LifecycleState.NEW.equals(host.getState())) {
            // Registering the host will register the context and wrappers
            registerHost(host);
        }
    }
}
 

import org.apache.catalina.Engine; //导入依赖的package包/类
/**
 * Determine the name of the domain to register MBeans for from a given
 * Container.
 * 
 * @param container
 *
 * @deprecated  To be removed since to creates a circular dependency. Will
 *              be replaced in Tomcat 8 by a new method on {@link
 *              Container}.
 */
@Deprecated
public static String getDomain(Container container) {
    
    String domain = null;
    
    Container c = container;
    
    while (!(c instanceof Engine) && c != null) {
        c = c.getParent();
    }
    
    if (c != null) {
        domain = c.getName();
    }
    
    return domain;
}
 

import org.apache.catalina.Engine; //导入依赖的package包/类
/**
 * Return the Server object that is the ultimate parent for the container
 * with which this Realm is associated. If the server cannot be found (eg
 * because the container hierarchy is not complete), <code>null</code> is
 * returned.
 */
protected Server getServer() {
	Container c = container;
	if (c instanceof Context) {
		c = c.getParent();
	}
	if (c instanceof Host) {
		c = c.getParent();
	}
	if (c instanceof Engine) {
		Service s = ((Engine) c).getService();
		if (s != null) {
			return s.getServer();
		}
	}
	return null;
}
 

import org.apache.catalina.Engine; //导入依赖的package包/类
/**
 * Return the Server object that is the ultimate parent for the container
 * with which this Realm is associated. If the server cannot be found (eg
 * because the container hierarchy is not complete), <code>null</code> is
 * returned.
 */
protected Server getServer() {
    Container c = container;
    if (c instanceof Context) {
        c = c.getParent();
    }
    if (c instanceof Host) {
        c = c.getParent();
    }
    if (c instanceof Engine) {
        Service s = ((Engine)c).getService();
        if (s != null) {
            return s.getServer();
        }
    }
    return null;
}
 

import org.apache.catalina.Engine; //导入依赖的package包/类
private void populateSessionTrackingModes() {
    // URL re-writing is always enabled by default
    defaultSessionTrackingModes = EnumSet.of(SessionTrackingMode.URL);
    supportedSessionTrackingModes = EnumSet.of(SessionTrackingMode.URL);

    if (context.getCookies()) {
        defaultSessionTrackingModes.add(SessionTrackingMode.COOKIE);
        supportedSessionTrackingModes.add(SessionTrackingMode.COOKIE);
    }

    // SSL not enabled by default as it can only used on its own
    // Context > Host > Engine > Service
    Service s = ((Engine) context.getParent().getParent()).getService();
    Connector[] connectors = s.findConnectors();
    // Need at least one SSL enabled connector to use the SSL session ID.
    for (Connector connector : connectors) {
        if (Boolean.TRUE.equals(connector.getAttribute("SSLEnabled"))) {
            supportedSessionTrackingModes.add(SessionTrackingMode.SSL);
            break;
        }
    }
}
 

import org.apache.catalina.Engine; //导入依赖的package包/类
private static File getConfigBaseFile(Host host) {
    String path = null;
    if (host.getXmlBase() != null) {
        path = host.getXmlBase();
    } else {
        StringBuilder xmlDir = new StringBuilder("conf");
        Container parent = host.getParent();
        if (parent instanceof Engine) {
            xmlDir.append('/');
            xmlDir.append(parent.getName());
        }
        xmlDir.append('/');
        xmlDir.append(host.getName());
        path = xmlDir.toString();
    }
    
    return getCanonicalPath(path);
}
 

import org.apache.catalina.Engine; //导入依赖的package包/类
/**
 * Add a new Engine to the set of defined Engines.
 *
 * @param engine The engine to be added
 */
public synchronized void addEngine(Engine engine) {

    if( log.isDebugEnabled() )
        log.debug("Adding engine (" + engine.getInfo() + ")");

    // Add this Engine to our set of defined Engines
    Engine results[] = new Engine[engines.length + 1];
    for (int i = 0; i < engines.length; i++)
        results[i] = engines[i];
    results[engines.length] = engine;
    engines = results;

    // Start this Engine if necessary
    if (started && (engine instanceof Lifecycle)) {
        try {
            ((Lifecycle) engine).start();
        } catch (LifecycleException e) {
            log.error("Engine.start", e);
        }
    }

    this.container = engine;
}
 

import org.apache.catalina.Engine; //导入依赖的package包/类
protected String getHostConfigPath(String resourceName) {
    StringBuffer result = new StringBuffer();
    Container container = context;
    Container host = null;
    Container engine = null;
    while (container != null) {
        if (container instanceof Host)
            host = container;
        if (container instanceof Engine)
            engine = container;
        container = container.getParent();
    }
    if (engine != null) {
        result.append(engine.getName()).append('/');
    }
    if (host != null) {
        result.append(host.getName()).append('/');
    }
    result.append(resourceName);
    return result.toString();
}
 

import org.apache.catalina.Engine; //导入依赖的package包/类
/**
 * Process the START event for an associated Engine.
 *
 * @param event The lifecycle event that has occurred
 */
public void lifecycleEvent(LifecycleEvent event) {

    // Identify the engine we are associated with
    try {
        engine = (Engine) event.getLifecycle();
    } catch (ClassCastException e) {
        log.error(sm.getString("engineConfig.cce", event.getLifecycle()), e);
        return;
    }

    // Process the event that has occurred
    if (event.getType().equals(Lifecycle.START_EVENT))
        start();
    else if (event.getType().equals(Lifecycle.STOP_EVENT))
        stop();

}
 

import org.apache.catalina.Engine; //导入依赖的package包/类
/**
 * Create the MBeans for the specified Service and its nested components.
 *
 * @param service Service for which to create MBeans
 *
 * @exception Exception if an exception is thrown during MBean creation
 */
protected void createMBeans(Service service) throws Exception {

    // Create the MBean for the Service itself
    if (log.isDebugEnabled())
        log.debug("Creating MBean for Service " + service);
    //MBeanUtils.createMBean(service);
    if (service instanceof StandardService) {
        ((StandardService) service).addPropertyChangeListener(this);
    }

    // Create the MBeans for the corresponding Connectors
    Connector connectors[] = service.findConnectors();
    for (int j = 0; j < connectors.length; j++) {
        createMBeans(connectors[j]);
    }

    // Create the MBean for the associated Engine and friends
    Engine engine = (Engine) service.getContainer();
    if (engine != null) {
        createMBeans(engine);
    }

}
 

import org.apache.catalina.Engine; //导入依赖的package包/类
/**
     * Deregister the MBeans for the specified Service and its nested
     * components.
     *
     * @param service Service for which to destroy MBeans
     *
     * @exception Exception if an exception is thrown during MBean destruction
     */
    protected void destroyMBeans(Service service) throws Exception {

        // Deregister the MBeans for the associated Engine
        Engine engine = (Engine) service.getContainer();
        if (engine != null) {
            //destroyMBeans(engine);
        }

//        // Deregister the MBeans for the corresponding Connectors
//        Connector connectors[] = service.findConnectors();
//        for (int j = 0; j < connectors.length; j++) {
//            destroyMBeans(connectors[j], service);
//        }

        // Deregister the MBean for the Service itself
        if (log.isDebugEnabled()) {
            log.debug("Destroying MBean for Service " + service);
        }
        //MBeanUtils.destroyMBean(service);
        if (service instanceof StandardService) {
            ((StandardService) service).removePropertyChangeListener(this);
        }

    }