org.mortbay.jetty.plugin.AbstractJettyMojo Maven / Gradle / Ivy
//========================================================================
//$Id$
//Copyright 2000-2004 Mort Bay Consulting Pty. Ltd.
//------------------------------------------------------------------------
//Licensed 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.mortbay.jetty.plugin;
import java.io.File;
import java.io.FileInputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.List;
import java.util.Properties;
import java.util.Set;
import org.apache.maven.artifact.Artifact;
import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
import org.apache.maven.project.MavenProject;
import org.codehaus.plexus.util.FileUtils;
import org.eclipse.jetty.security.LoginService;
import org.eclipse.jetty.server.Connector;
import org.eclipse.jetty.server.RequestLog;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.ShutdownMonitor;
import org.eclipse.jetty.server.handler.ContextHandler;
import org.eclipse.jetty.server.handler.ContextHandlerCollection;
import org.eclipse.jetty.server.handler.HandlerCollection;
import org.eclipse.jetty.util.Scanner;
import org.eclipse.jetty.util.resource.Resource;
import org.eclipse.jetty.xml.XmlConfiguration;
/**
* AbstractJettyMojo
*
*
*/
public abstract class AbstractJettyMojo extends AbstractMojo
{
/**
* Whether or not to include dependencies on the plugin's classpath with <scope>provided</scope>
* Use WITH CAUTION as you may wind up with duplicate jars/classes.
*
* @since jetty-7.5.2
* @parameter default-value="false"
*/
protected boolean useProvidedScope;
/**
* List of goals that are NOT to be used
*
* @since jetty-7.5.2
* @parameter
*/
protected String[] excludedGoals;
/**
* List of connectors to use. If none are configured
* then the default is a single SelectChannelConnector at port 8080. You can
* override this default port number by using the system property jetty.port
* on the command line, eg: mvn -Djetty.port=9999 jetty:run. Consider using instead
* the <jettyXml> element to specify external jetty xml config file.
*
* @parameter
*/
protected Connector[] connectors;
/**
* List of other contexts to set up. Consider using instead
* the <jettyXml> element to specify external jetty xml config file.
* Optional.
*
*
* @parameter
*/
protected ContextHandler[] contextHandlers;
/**
* List of security realms to set up. Consider using instead
* the <jettyXml> element to specify external jetty xml config file.
* Optional.
*
*
* @parameter
*/
protected LoginService[] loginServices;
/**
* A RequestLog implementation to use for the webapp at runtime.
* Consider using instead the <jettyXml> element to specify external jetty xml config file.
* Optional.
*
*
* @parameter
*/
protected RequestLog requestLog;
/**
* An instance of org.eclipse.jetty.webapp.WebAppContext that represents the webapp.
* Use any of its setters to configure the webapp. This is the preferred and most
* flexible method of configuration, rather than using the (deprecated) individual
* parameters like "tmpDirectory", "contextPath" etc.
*
* @parameter alias="webAppConfig"
*/
protected JettyWebAppContext webApp;
/**
* The context path for the webapp. Defaults to the
* name of the webapp's artifact.
*
* @deprecated Use <webApp><contextPath> instead.
* @parameter expression="/${project.artifactId}"
* @required
* @readonly
*/
protected String contextPath;
/**
* The temporary directory to use for the webapp.
* Defaults to target/tmp.
*
* @deprecated Use %lt;webApp><tempDirectory> instead.
* @parameter expression="${project.build.directory}/tmp"
* @required
* @readonly
*/
protected File tmpDirectory;
/**
* The interval in seconds to scan the webapp for changes
* and restart the context if necessary. Ignored if reload
* is enabled. Disabled by default.
*
* @parameter expression="${jetty.scanIntervalSeconds}" default-value="0"
* @required
*/
protected int scanIntervalSeconds;
/**
* reload can be set to either 'automatic' or 'manual'
*
* if 'manual' then the context can be reloaded by a linefeed in the console
* if 'automatic' then traditional reloading on changed files is enabled.
*
* @parameter expression="${jetty.reload}" default-value="automatic"
*/
protected String reload;
/**
* File containing system properties to be set before execution
*
* Note that these properties will NOT override System properties
* that have been set on the command line, by the JVM, or directly
* in the POM via systemProperties. Optional.
*
* @parameter expression="${jetty.systemPropertiesFile}"
*/
protected File systemPropertiesFile;
/**
* System properties to set before execution.
* Note that these properties will NOT override System properties
* that have been set on the command line or by the JVM. They WILL
* override System properties that have been set via systemPropertiesFile.
* Optional.
* @parameter
*/
protected SystemProperties systemProperties;
/**
* Comma separated list of a jetty xml configuration files whose contents
* will be applied before any plugin configuration. Optional.
*
*
* @parameter alias="jettyConfig"
*/
protected String jettyXml;
/**
* Port to listen to stop jetty on executing -DSTOP.PORT=<stopPort>
* -DSTOP.KEY=<stopKey> -jar start.jar --stop
*
* @parameter
*/
protected int stopPort;
/**
* Key to provide when stopping jetty on executing java -DSTOP.KEY=<stopKey>
* -DSTOP.PORT=<stopPort> -jar start.jar --stop
*
* @parameter
*/
protected String stopKey;
/**
*
* Determines whether or not the server blocks when started. The default
* behavior (daemon = false) will cause the server to pause other processes
* while it continues to handle web requests. This is useful when starting the
* server with the intent to work with it interactively.
*
* Often, it is desirable to let the server start and continue running subsequent
* processes in an automated build environment. This can be facilitated by setting
* daemon to true.
*
*
* @parameter expression="${jetty.daemon}" default-value="false"
*/
protected boolean daemon;
/**
* Skip this mojo execution.
*
* @parameter expression="${jetty.skip}" default-value="false"
*/
protected boolean skip;
/**
* Location of a context xml configuration file whose contents
* will be applied to the webapp AFTER anything in <webApp>.Optional.
*
*
* @parameter alias="webAppXml"
*/
protected String contextXml;
/**
* The maven project.
*
* @parameter expression="${project}"
* @readonly
*/
protected MavenProject project;
/**
* The artifacts for the project.
*
* @parameter expression="${project.artifacts}"
* @readonly
*/
protected Set projectArtifacts;
/**
* @parameter expression="${mojoExecution}"
* @readonly
*/
private org.apache.maven.plugin.MojoExecution execution;
/**
* The artifacts for the plugin itself.
*
* @parameter expression="${plugin.artifacts}"
* @readonly
*/
private List pluginArtifacts;
/**
* A wrapper for the Server object
*/
protected JettyServer server;
/**
* A scanner to check for changes to the webapp
*/
protected Scanner scanner;
/**
* List of files and directories to scan
*/
protected ArrayList scanList;
/**
* List of Listeners for the scanner
*/
protected ArrayList scannerListeners;
/**
* A scanner to check ENTER hits on the console
*/
protected Thread consoleScanner;
public String PORT_SYSPROPERTY = "jetty.port";
public abstract void restartWebApp(boolean reconfigureScanner) throws Exception;
public abstract void checkPomConfiguration() throws MojoExecutionException;
public abstract void configureScanner () throws MojoExecutionException;
public void execute() throws MojoExecutionException, MojoFailureException
{
getLog().info("Configuring Jetty for project: " + getProject().getName());
if (skip)
{
getLog().info("Skipping Jetty start: jetty.skip==true");
return;
}
if (isExcluded(execution.getMojoDescriptor().getGoal()))
{
getLog().info("The goal \""+execution.getMojoDescriptor().getFullGoalName()+
"\" has been made unavailable for this web application by an configuration.");
return;
}
configurePluginClasspath();
PluginLog.setLog(getLog());
checkPomConfiguration();
startJetty();
}
public void configurePluginClasspath() throws MojoExecutionException
{
//if we are configured to include the provided dependencies on the plugin's classpath
//(which mimics being on jetty's classpath vs being on the webapp's classpath), we first
//try and filter out ones that will clash with jars that are plugin dependencies, then
//create a new classloader that we setup in the parent chain.
if (useProvidedScope)
{
try
{
List provided = new ArrayList();
URL[] urls = null;
for ( Iterator iter = projectArtifacts.iterator(); iter.hasNext(); )
{
Artifact artifact = iter.next();
if (Artifact.SCOPE_PROVIDED.equals(artifact.getScope()) && !isPluginArtifact(artifact))
{
provided.add(artifact.getFile().toURI().toURL());
if (getLog().isDebugEnabled()) { getLog().debug("Adding provided artifact: "+artifact);}
}
}
if (!provided.isEmpty())
{
urls = new URL[provided.size()];
provided.toArray(urls);
URLClassLoader loader = new URLClassLoader(urls, getClass().getClassLoader());
Thread.currentThread().setContextClassLoader(loader);
getLog().info("Plugin classpath augmented with provided dependencies: "+Arrays.toString(urls));
}
}
catch (MalformedURLException e)
{
throw new MojoExecutionException("Invalid url", e);
}
}
}
public boolean isPluginArtifact(Artifact artifact)
{
if (pluginArtifacts == null || pluginArtifacts.isEmpty())
return false;
boolean isPluginArtifact = false;
for (Iterator iter = pluginArtifacts.iterator(); iter.hasNext() && !isPluginArtifact; )
{
Artifact pluginArtifact = iter.next();
if (getLog().isDebugEnabled()) { getLog().debug("Checking "+pluginArtifact);}
if (pluginArtifact.getGroupId().equals(artifact.getGroupId()) && pluginArtifact.getArtifactId().equals(artifact.getArtifactId()))
isPluginArtifact = true;
}
return isPluginArtifact;
}
public void finishConfigurationBeforeStart() throws Exception
{
HandlerCollection contexts = (HandlerCollection)server.getChildHandlerByClass(ContextHandlerCollection.class);
if (contexts==null)
contexts = (HandlerCollection)server.getChildHandlerByClass(HandlerCollection.class);
for (int i=0; (this.contextHandlers != null) && (i < this.contextHandlers.length); i++)
{
contexts.addHandler(this.contextHandlers[i]);
}
}
public void applyJettyXml() throws Exception
{
if (getJettyXmlFiles() == null)
return;
for ( File xmlFile : getJettyXmlFiles() )
{
getLog().info( "Configuring Jetty from xml configuration file = " + xmlFile.getCanonicalPath() );
XmlConfiguration xmlConfiguration = new XmlConfiguration(Resource.toURL(xmlFile));
xmlConfiguration.configure(this.server);
}
}
public void startJetty () throws MojoExecutionException
{
try
{
getLog().debug("Starting Jetty Server ...");
printSystemProperties();
this.server = new JettyServer();
setServer(this.server);
//apply any config from a jetty.xml file first which is able to
//be overwritten by config in the pom.xml
applyJettyXml ();
// if the user hasn't configured their project's pom to use a
// different set of connectors,
// use the default
Connector[] connectors = this.server.getConnectors();
if (connectors == null|| connectors.length == 0)
{
//try using ones configured in pom
this.server.setConnectors(this.connectors);
connectors = this.server.getConnectors();
if (connectors == null || connectors.length == 0)
{
//if a SystemProperty -Djetty.port= has been supplied, use that as the default port
this.connectors = new Connector[] { this.server.createDefaultConnector(System.getProperty(PORT_SYSPROPERTY, null)) };
this.server.setConnectors(this.connectors);
}
}
//set up a RequestLog if one is provided
if (this.requestLog != null)
getServer().setRequestLog(this.requestLog);
//set up the webapp and any context provided
this.server.configureHandlers();
configureWebApplication();
this.server.addWebApplication(webApp);
// set up security realms
for (int i = 0; (this.loginServices != null) && i < this.loginServices.length; i++)
{
getLog().debug(this.loginServices[i].getClass().getName() + ": "+ this.loginServices[i].toString());
getServer().addBean(this.loginServices[i]);
}
//do any other configuration required by the
//particular Jetty version
finishConfigurationBeforeStart();
if(stopPort>0 && stopKey!=null)
{
ShutdownMonitor monitor = ShutdownMonitor.getInstance();
monitor.setPort(stopPort);
monitor.setKey(stopKey);
monitor.setExitVm(!daemon);
}
// start Jetty
this.server.start();
getLog().info("Started Jetty Server");
// start the scanner thread (if necessary) on the main webapp
configureScanner ();
startScanner();
// start the new line scanner thread if necessary
startConsoleScanner();
// keep the thread going if not in daemon mode
if (!daemon )
{
server.join();
}
}
catch (Exception e)
{
throw new MojoExecutionException("Failure", e);
}
finally
{
if (!daemon )
{
getLog().info("Jetty server exiting.");
}
}
}
/**
* Subclasses should invoke this to setup basic info
* on the webapp
*
* @throws MojoExecutionException
*/
public void configureWebApplication () throws Exception
{
//As of jetty-7, you must use a element
if (webApp == null)
webApp = new JettyWebAppContext();
//Apply any context xml file to set up the webapp
//CAUTION: if you've defined a element then the
//context xml file can OVERRIDE those settings
if (contextXml != null)
{
File file = FileUtils.getFile(contextXml);
XmlConfiguration xmlConfiguration = new XmlConfiguration(Resource.toURL(file));
getLog().info("Applying context xml file "+contextXml);
xmlConfiguration.configure(webApp);
}
//If no contextPath was specified, go with our default
String cp = webApp.getContextPath();
if (cp == null || "".equals(cp))
{
webApp.setContextPath((contextPath.startsWith("/") ? contextPath : "/"+ contextPath));
}
//If no tmp directory was specified, and we have one, use it
if (webApp.getTempDirectory() == null && tmpDirectory != null)
{
if (!tmpDirectory.exists())
tmpDirectory.mkdirs();
webApp.setTempDirectory(tmpDirectory);
}
getLog().info("Context path = " + webApp.getContextPath());
getLog().info("Tmp directory = "+ (webApp.getTempDirectory()== null? " determined at runtime": webApp.getTempDirectory()));
getLog().info("Web defaults = "+(webApp.getDefaultsDescriptor()==null?" jetty default":webApp.getDefaultsDescriptor()));
getLog().info("Web overrides = "+(webApp.getOverrideDescriptor()==null?" none":webApp.getOverrideDescriptor()));
}
/**
* Run a scanner thread on the given list of files and directories, calling
* stop/start on the given list of LifeCycle objects if any of the watched
* files change.
*
*/
private void startScanner() throws Exception
{
// check if scanning is enabled
if (getScanIntervalSeconds() <= 0) return;
// check if reload is manual. It disables file scanning
if ( "manual".equalsIgnoreCase( reload ) )
{
// issue a warning if both scanIntervalSeconds and reload
// are enabled
getLog().warn("scanIntervalSeconds is set to " + scanIntervalSeconds + " but will be IGNORED due to manual reloading");
return;
}
scanner = new Scanner();
scanner.setReportExistingFilesOnStartup(false);
scanner.setScanInterval(getScanIntervalSeconds());
scanner.setScanDirs(getScanList());
scanner.setRecursive(true);
List listeners = getScannerListeners();
Iterator itor = (listeners==null?null:listeners.iterator());
while (itor!=null && itor.hasNext())
scanner.addListener((Scanner.Listener)itor.next());
getLog().info("Starting scanner at interval of " + getScanIntervalSeconds()+ " seconds.");
scanner.start();
}
/**
* Run a thread that monitors the console input to detect ENTER hits.
*/
protected void startConsoleScanner() throws Exception
{
if ( "manual".equalsIgnoreCase( reload ) )
{
getLog().info("Console reloading is ENABLED. Hit ENTER on the console to restart the context.");
consoleScanner = new ConsoleScanner(this);
consoleScanner.start();
}
}
private void printSystemProperties ()
{
// print out which system properties were set up
if (getLog().isDebugEnabled())
{
if (systemProperties != null)
{
Iterator itor = systemProperties.getSystemProperties().iterator();
while (itor.hasNext())
{
SystemProperty prop = (SystemProperty)itor.next();
getLog().debug("Property "+prop.getName()+"="+prop.getValue()+" was "+ (prop.isSet() ? "set" : "skipped"));
}
}
}
}
/**
* Try and find a jetty-web.xml file, using some
* historical naming conventions if necessary.
* @param webInfDir
* @return the jetty web xml file
*/
public File findJettyWebXmlFile (File webInfDir)
{
if (webInfDir == null)
return null;
if (!webInfDir.exists())
return null;
File f = new File (webInfDir, "jetty-web.xml");
if (f.exists())
return f;
//try some historical alternatives
f = new File (webInfDir, "web-jetty.xml");
if (f.exists())
return f;
return null;
}
public Scanner getScanner ()
{
return scanner;
}
public MavenProject getProject()
{
return this.project;
}
public void setProject(MavenProject project) {
this.project = project;
}
public File getTmpDirectory()
{
return this.tmpDirectory;
}
public void setTmpDirectory(File tmpDirectory) {
this.tmpDirectory = tmpDirectory;
}
/**
* @return Returns the contextPath.
*/
public String getContextPath()
{
return this.contextPath;
}
public void setContextPath(String contextPath) {
this.contextPath = contextPath;
}
/**
* @return Returns the scanIntervalSeconds.
*/
public int getScanIntervalSeconds()
{
return this.scanIntervalSeconds;
}
public void setScanIntervalSeconds(int scanIntervalSeconds) {
this.scanIntervalSeconds = scanIntervalSeconds;
}
/**
* @return returns the path to the systemPropertiesFile
*/
public File getSystemPropertiesFile()
{
return this.systemPropertiesFile;
}
public void setSystemPropertiesFile(File file) throws Exception
{
this.systemPropertiesFile = file;
FileInputStream propFile = new FileInputStream(systemPropertiesFile);
Properties properties = new Properties();
properties.load(propFile);
if (this.systemProperties == null )
this.systemProperties = new SystemProperties();
for (Enumeration keys = properties.keys(); keys.hasMoreElements(); )
{
String key = (String)keys.nextElement();
if ( ! systemProperties.containsSystemProperty(key) )
{
SystemProperty prop = new SystemProperty();
prop.setKey(key);
prop.setValue(properties.getProperty(key));
this.systemProperties.setSystemProperty(prop);
}
}
}
public void setSystemProperties(SystemProperties systemProperties)
{
if (this.systemProperties == null)
this.systemProperties = systemProperties;
else
{
Iterator itor = systemProperties.getSystemProperties().iterator();
while (itor.hasNext())
{
SystemProperty prop = (SystemProperty)itor.next();
this.systemProperties.setSystemProperty(prop);
}
}
}
public SystemProperties getSystemProperties ()
{
return this.systemProperties;
}
public List getJettyXmlFiles()
{
if ( this.jettyXml == null )
{
return null;
}
List jettyXmlFiles = new ArrayList();
if ( this.jettyXml.indexOf(',') == -1 )
{
jettyXmlFiles.add( new File( this.jettyXml ) );
}
else
{
String[] files = this.jettyXml.split(",");
for ( String file : files )
{
jettyXmlFiles.add( new File(file) );
}
}
return jettyXmlFiles;
}
public JettyServer getServer ()
{
return this.server;
}
public void setServer (JettyServer server)
{
this.server = server;
}
public void setScanList (ArrayList list)
{
this.scanList = new ArrayList(list);
}
public ArrayList getScanList ()
{
return this.scanList;
}
public void setScannerListeners (ArrayList listeners)
{
this.scannerListeners = new ArrayList(listeners);
}
public ArrayList getScannerListeners()
{
return this.scannerListeners;
}
public JettyWebAppContext getWebAppConfig()
{
return webApp;
}
public void setWebAppConfig(JettyWebAppContext webAppConfig)
{
this.webApp = webAppConfig;
}
public RequestLog getRequestLog()
{
return requestLog;
}
public void setRequestLog(RequestLog requestLog)
{
this.requestLog = requestLog;
}
public LoginService[] getLoginServices()
{
return loginServices;
}
public void setLoginServices(LoginService[] loginServices)
{
this.loginServices = loginServices;
}
public ContextHandler[] getContextHandlers()
{
return contextHandlers;
}
public void setContextHandlers(ContextHandler[] contextHandlers)
{
this.contextHandlers = contextHandlers;
}
public Connector[] getConnectors()
{
return connectors;
}
public void setConnectors(Connector[] connectors)
{
this.connectors = connectors;
}
public String getReload()
{
return reload;
}
public void setReload(String reload)
{
this.reload = reload;
}
public String getJettyConfig()
{
return jettyXml;
}
public void setJettyConfig(String jettyConfig)
{
this.jettyXml = jettyConfig;
}
public String getWebAppXml()
{
return contextXml;
}
public void setWebAppXml(String webAppXml)
{
this.contextXml = webAppXml;
}
public boolean isSkip()
{
return skip;
}
public void setSkip(boolean skip)
{
this.skip = skip;
}
public boolean isDaemon()
{
return daemon;
}
public void setDaemon(boolean daemon)
{
this.daemon = daemon;
}
public String getStopKey()
{
return stopKey;
}
public void setStopKey(String stopKey)
{
this.stopKey = stopKey;
}
public int getStopPort()
{
return stopPort;
}
public void setStopPort(int stopPort)
{
this.stopPort = stopPort;
}
public List getPluginArtifacts()
{
return pluginArtifacts;
}
public void setPluginArtifacts(List pluginArtifacts)
{
this.pluginArtifacts = pluginArtifacts;
}
public boolean isExcluded (String goal)
{
if (excludedGoals == null || goal == null)
return false;
goal = goal.trim();
if ("".equals(goal))
return false;
boolean excluded = false;
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