| // |
| // ======================================================================== |
| // Copyright (c) 1995-2015 Mort Bay Consulting Pty. Ltd. |
| // ------------------------------------------------------------------------ |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // The Apache License v2.0 is available at |
| // http://www.opensource.org/licenses/apache2.0.php |
| // |
| // You may elect to redistribute this code under either of these licenses. |
| // ======================================================================== |
| // |
| |
| package org.eclipse.jetty.deploy.providers; |
| |
| import java.io.File; |
| import java.io.FilenameFilter; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.CopyOnWriteArrayList; |
| |
| import org.eclipse.jetty.deploy.App; |
| import org.eclipse.jetty.deploy.AppProvider; |
| import org.eclipse.jetty.deploy.DeploymentManager; |
| import org.eclipse.jetty.util.Scanner; |
| import org.eclipse.jetty.util.annotation.ManagedAttribute; |
| import org.eclipse.jetty.util.annotation.ManagedObject; |
| import org.eclipse.jetty.util.component.AbstractLifeCycle; |
| import org.eclipse.jetty.util.log.Log; |
| import org.eclipse.jetty.util.log.Logger; |
| import org.eclipse.jetty.util.resource.Resource; |
| |
| /** |
| */ |
| @ManagedObject("Abstract Provider for loading webapps") |
| public abstract class ScanningAppProvider extends AbstractLifeCycle implements AppProvider |
| { |
| private static final Logger LOG = Log.getLogger(ScanningAppProvider.class); |
| |
| private Map<String, App> _appMap = new HashMap<String, App>(); |
| |
| private DeploymentManager _deploymentManager; |
| protected FilenameFilter _filenameFilter; |
| private final List<Resource> _monitored= new CopyOnWriteArrayList<>(); |
| private boolean _recursive = false; |
| private int _scanInterval = 10; |
| private Scanner _scanner; |
| |
| /* ------------------------------------------------------------ */ |
| private final Scanner.DiscreteListener _scannerListener = new Scanner.DiscreteListener() |
| { |
| @Override |
| public void fileAdded(String filename) throws Exception |
| { |
| ScanningAppProvider.this.fileAdded(filename); |
| } |
| |
| @Override |
| public void fileChanged(String filename) throws Exception |
| { |
| ScanningAppProvider.this.fileChanged(filename); |
| } |
| |
| @Override |
| public void fileRemoved(String filename) throws Exception |
| { |
| ScanningAppProvider.this.fileRemoved(filename); |
| } |
| }; |
| |
| /* ------------------------------------------------------------ */ |
| protected ScanningAppProvider() |
| { |
| } |
| |
| /* ------------------------------------------------------------ */ |
| protected ScanningAppProvider(FilenameFilter filter) |
| { |
| _filenameFilter = filter; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| protected void setFilenameFilter(FilenameFilter filter) |
| { |
| if (isRunning()) |
| throw new IllegalStateException(); |
| _filenameFilter = filter; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| /** |
| * @return The index of currently deployed applications. |
| */ |
| protected Map<String, App> getDeployedApps() |
| { |
| return _appMap; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| /** |
| * Called by the Scanner.DiscreteListener to create a new App object. |
| * Isolated in a method so that it is possible to override the default App |
| * object for specialized implementations of the AppProvider. |
| * |
| * @param filename |
| * The file that is the context.xml. It is resolved by |
| * {@link Resource#newResource(String)} |
| * @return The App object for this particular context definition file. |
| */ |
| protected App createApp(String filename) |
| { |
| return new App(_deploymentManager,this,filename); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| @Override |
| protected void doStart() throws Exception |
| { |
| if (LOG.isDebugEnabled()) |
| LOG.debug(this.getClass().getSimpleName() + ".doStart()"); |
| if (_monitored.size()==0) |
| throw new IllegalStateException("No configuration dir specified"); |
| |
| LOG.info("Deployment monitor " + _monitored + " at interval " + _scanInterval); |
| List<File> files = new ArrayList<>(); |
| for (Resource resource:_monitored) |
| { |
| if (resource.exists() && resource.getFile().canRead()) |
| files.add(resource.getFile()); |
| else |
| LOG.warn("Does not exist: "+resource); |
| } |
| |
| _scanner = new Scanner(); |
| _scanner.setScanDirs(files); |
| _scanner.setScanInterval(_scanInterval); |
| _scanner.setRecursive(_recursive); |
| _scanner.setFilenameFilter(_filenameFilter); |
| _scanner.setReportDirs(true); |
| _scanner.addListener(_scannerListener); |
| _scanner.start(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| @Override |
| protected void doStop() throws Exception |
| { |
| if (_scanner!=null) |
| { |
| _scanner.stop(); |
| _scanner.removeListener(_scannerListener); |
| _scanner = null; |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| protected boolean exists(String path) |
| { |
| return _scanner.exists(path); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| protected void fileAdded(String filename) throws Exception |
| { |
| if (LOG.isDebugEnabled()) |
| LOG.debug("added {}",filename); |
| App app = ScanningAppProvider.this.createApp(filename); |
| if (app != null) |
| { |
| _appMap.put(filename,app); |
| _deploymentManager.addApp(app); |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| protected void fileChanged(String filename) throws Exception |
| { |
| if (LOG.isDebugEnabled()) |
| LOG.debug("changed {}",filename); |
| App app = _appMap.remove(filename); |
| if (app != null) |
| { |
| _deploymentManager.removeApp(app); |
| } |
| app = ScanningAppProvider.this.createApp(filename); |
| if (app != null) |
| { |
| _appMap.put(filename,app); |
| _deploymentManager.addApp(app); |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| protected void fileRemoved(String filename) throws Exception |
| { |
| if (LOG.isDebugEnabled()) |
| LOG.debug("removed {}",filename); |
| App app = _appMap.remove(filename); |
| if (app != null) |
| _deploymentManager.removeApp(app); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| /** |
| * Get the deploymentManager. |
| * |
| * @return the deploymentManager |
| */ |
| public DeploymentManager getDeploymentManager() |
| { |
| return _deploymentManager; |
| } |
| |
| |
| /* ------------------------------------------------------------ */ |
| public Resource getMonitoredDirResource() |
| { |
| if (_monitored.size()==0) |
| return null; |
| if (_monitored.size()>1) |
| throw new IllegalStateException(); |
| return _monitored.get(0); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public String getMonitoredDirName() |
| { |
| Resource resource=getMonitoredDirResource(); |
| return resource==null?null:resource.toString(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| @ManagedAttribute("scanning interval to detect changes which need reloaded") |
| public int getScanInterval() |
| { |
| return _scanInterval; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| @ManagedAttribute("recursive scanning supported") |
| public boolean isRecursive() |
| { |
| return _recursive; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| @Override |
| public void setDeploymentManager(DeploymentManager deploymentManager) |
| { |
| _deploymentManager = deploymentManager; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void setMonitoredResources(List<Resource> resources) |
| { |
| _monitored.clear(); |
| _monitored.addAll(resources); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public List<Resource> getMonitoredResources() |
| { |
| return Collections.unmodifiableList(_monitored); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void setMonitoredDirResource(Resource resource) |
| { |
| setMonitoredResources(Collections.singletonList(resource)); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void addScannerListener(Scanner.Listener listener) |
| { |
| _scanner.addListener(listener); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| /** |
| * @param dir |
| * Directory to scan for context descriptors or war files |
| */ |
| public void setMonitoredDirName(String dir) |
| { |
| setMonitoredDirectories(Collections.singletonList(dir)); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void setMonitoredDirectories(Collection<String> directories) |
| { |
| try |
| { |
| List<Resource> resources = new ArrayList<>(); |
| for (String dir:directories) |
| resources.add(Resource.newResource(dir)); |
| setMonitoredResources(resources); |
| } |
| catch (Exception e) |
| { |
| throw new IllegalArgumentException(e); |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| protected void setRecursive(boolean recursive) |
| { |
| _recursive = recursive; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void setScanInterval(int scanInterval) |
| { |
| _scanInterval = scanInterval; |
| } |
| } |