/*******************************************************************************
* Copyright (c) 2007 Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is 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
*
* Contributors:
* Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.cdi.internal.core.scanner.lib;
import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.StringTokenizer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaModelException;
import org.jboss.tools.cdi.core.CDICoreNature;
import org.jboss.tools.cdi.core.CDICorePlugin;
import org.jboss.tools.cdi.core.CDIVersion;
import org.jboss.tools.cdi.core.extension.CDIExtensionFactory;
import org.jboss.tools.common.model.XModelObject;
import org.jboss.tools.common.model.filesystems.FileSystemsHelper;
import org.jboss.tools.common.model.filesystems.impl.FileAnyImpl;
import org.jboss.tools.common.model.filesystems.impl.Libs;
import org.jboss.tools.common.model.project.ext.AbstractClassPathMonitor;
import org.jboss.tools.common.model.util.EclipseResourceUtil;
public class ClassPathMonitor extends AbstractClassPathMonitor<CDICoreNature>{
/**
* Runtimes detected in jars are stored in CDIExtensionManager by jar path
* in order to replace them when jar is modified.
* Runtimes detected with recognizers are not bound to jars so that they
* are stored in CDIExtensionManager by a unique key.
*/
private static final String RECOGNIZED_RUNTIMES_PATH = "_recognized_";
IPath[] srcs = new IPath[0];
Map<FileAnyImpl, Long> servicesInSrc = new HashMap<FileAnyImpl, Long>();
Set<IPath> removedPaths = new HashSet<IPath>();
public ClassPathMonitor(CDICoreNature project) {
this.project = project;
}
public void init() {
model = EclipseResourceUtil.createObjectForResource(getProjectResource()).getModel();
super.init();
}
public synchronized boolean update() {
Libs libs = FileSystemsHelper.getLibs(model);
if(libs == null) {
return false;
}
boolean r1 = updateServicesInSrcs();
boolean r2 = super.update();
return r1 || r2;
}
public JarSet process() {
JarSet newJars = new JarSet();
for (String p: syncProcessedPaths()) {
synchronized (removedPaths) {
removedPaths.add(new Path(p));
}
project.getExtensionManager().pathRemoved(p);
}
boolean newRuntimeDetected = false;
Set<String> processed = new HashSet<String>();
synchronized(this) {
processed.addAll(processedPaths);
}
for (int i = 0; i < paths.size(); i++) {
String p = paths.get(i);
if(!requestForLoad(p)) continue;
removedPaths.add(new Path(p));
String fileName = new File(p).getName();
if(EclipseResourceUtil.SYSTEM_JAR_SET.contains(fileName)) continue;
XModelObject o = FileSystemsHelper.getLibs(model).getLibrary(p);
if(o == null) continue;
//Load cdi extensions. Do we need beans.xml to look for extensions?
boolean nrd = project.getExtensionManager().setRuntimes(p, readRuntimes(o));
if(nrd) newRuntimeDetected = true;
detectBeanModule(p, o, newJars);
}
for (FileAnyImpl s: servicesInSrc.keySet()) {
IResource r = (IResource)s.getAdapter(IResource.class);
if(r != null && r.exists()) {
boolean nrd = project.getExtensionManager().setRuntimes(r.getFullPath().toString(), readRuntimesInService(s));
if(nrd) newRuntimeDetected = true;
}
}
IJavaProject javaProject = EclipseResourceUtil.getJavaProject(project.getProject());
Set<String> recognizedRuntimes = CDIExtensionFactory.getInstance().getRecognizedRuntimes(javaProject);
boolean nrd = project.getExtensionManager().setRuntimes(RECOGNIZED_RUNTIMES_PATH, recognizedRuntimes);
if(nrd) newRuntimeDetected = true;
if(newRuntimeDetected) {
for (String p: processed) {
String fileName = new File(p).getName();
if(EclipseResourceUtil.SYSTEM_JAR_SET.contains(fileName)) continue;
XModelObject o = FileSystemsHelper.getLibs(model).getLibrary(p);
if(o != null) {
detectBeanModule(p, o, newJars);
}
}
}
validateProjectDependencies();
return newJars;
}
private void detectBeanModule(String path, XModelObject fs, JarSet newJars) {
newJars.getFileSystems().put(path, fs);
XModelObject b = fs.getChildByPath("META-INF/beans.xml");
if(b != null) {
newJars.getBeanModules().put(path, b);
} else if(project.getVersion() != CDIVersion.CDI_1_0) {
int archiveType = BeanArchiveDetector.getInstance().getBeanArchive(path);
if(archiveType == BeanArchiveDetector.UNRESOLVED) {
if(!readRuntimes(fs).isEmpty()) {
BeanArchiveDetector.getInstance().setBeanArchive(path, BeanArchiveDetector.NOT_ARCHIVE);
archiveType = BeanArchiveDetector.NOT_ARCHIVE;
} else {
try {
archiveType = BeanArchiveDetector.getInstance().resolve(path, project);
} catch (JavaModelException e) {
CDICorePlugin.getDefault().logError(e);
return;
}
}
}
if(archiveType != BeanArchiveDetector.NOT_ARCHIVE) {
newJars.getBeanModules().put(path, null);
}
}
}
public void applyRemovedPaths() {
synchronized (removedPaths) {
for (IPath p: removedPaths) {
project.pathRemoved(p);
}
removedPaths.clear();
}
}
public IProject getProjectResource() {
return project.getProject();
}
public void setSrcs(IPath[] newSrcs) {
Set<IPath> ss = new HashSet<IPath>();
for (IPath s: newSrcs) {
ss.add(s);
}
for (IPath s: srcs) {
if(!ss.contains(s)) {
synchronized (removedPaths) {
removedPaths.add(s);
}
}
}
srcs = newSrcs;
}
public void validateProjectDependencies() {
List<CDICoreNature> ps = null;
try {
ps = getProjects(project.getProject());
} catch (CoreException e) {
CDICorePlugin.getDefault().logError(e);
}
if(ps != null) {
Set<CDICoreNature> set = project.getCDIProjects();
Set<CDICoreNature> removable = new HashSet<CDICoreNature>();
removable.addAll(set);
removable.removeAll(ps);
ps.removeAll(set);
for (CDICoreNature p : ps) {
project.addCDIProject(p);
}
for (CDICoreNature p : removable) {
project.removeCDIProject(p);
}
}
}
public boolean hasToUpdateProjectDependencies() {
List<CDICoreNature> ps = null;
try {
ps = getProjects(project.getProject());
} catch (CoreException e) {
CDICorePlugin.getDefault().logError(e);
}
if(ps != null) {
Set<CDICoreNature> set = project.getCDIProjects();
Set<CDICoreNature> removable = new HashSet<CDICoreNature>();
removable.addAll(set);
removable.removeAll(ps);
ps.removeAll(set);
for (CDICoreNature p : ps) {
return true;
}
for (CDICoreNature p : removable) {
return true;
}
}
return false;
}
public static List<CDICoreNature> getProjects(IProject project) throws CoreException {
List<CDICoreNature> list = new ArrayList<CDICoreNature>();
IJavaProject javaProject = EclipseResourceUtil.getJavaProject(project);
if(javaProject != null) {
IClasspathEntry[] es = javaProject.getResolvedClasspath(true);
for (int i = 0; i < es.length; i++) {
if(es[i].getEntryKind() == IClasspathEntry.CPE_PROJECT) {
IProject p = ResourcesPlugin.getWorkspace().getRoot().getProject(es[i].getPath().lastSegment());
if(p == null || !p.isAccessible()) continue;
CDICoreNature sp = CDICorePlugin.getCDI(p, false);
if(sp != null) list.add(sp);
}
}
}
return list;
}
private boolean updateServicesInSrcs() {
Set<IFolder> fs = EclipseResourceUtil.getAllVisibleSourceFolders(project.getProject());
Map<FileAnyImpl, Long> newServices = new HashMap<FileAnyImpl, Long>();
boolean result = false;
for (IFolder folder: fs) {
IFile f = folder.getFile(SERVICE_PATH);
if(f.exists()) {
XModelObject o = EclipseResourceUtil.createObjectForResource(f);
if(o instanceof FileAnyImpl) {
FileAnyImpl s = (FileAnyImpl)o;
newServices.put(s, s.getTimeStamp());
Long old = servicesInSrc.get(s);
if(old == null || old.longValue() != s.getTimeStamp()) {
result = true;
}
}
}
}
if(servicesInSrc.size() != newServices.size()) {
result = true;
}
servicesInSrc = newServices;
return result;
}
private static String SERVICE_PATH = "META-INF/services/javax.enterprise.inject.spi.Extension";
private static Set<String> EMPTY_RUNTIMES = new HashSet<String>();
private Set<String> readRuntimes(XModelObject jar) {
XModelObject o = jar.getChildByPath(SERVICE_PATH);
return (o instanceof FileAnyImpl) ? readRuntimesInService((FileAnyImpl)o) : EMPTY_RUNTIMES;
}
private Set<String> readRuntimesInService(FileAnyImpl o) {
Set<String> result = new HashSet<String>();
String text = ((FileAnyImpl)o).getAsText();
if(text == null || text.length() == 0) return EMPTY_RUNTIMES;
StringTokenizer st = new StringTokenizer(text, "\r\n\t"); //$NON-NLS-1$
while(st.hasMoreTokens()) {
String t = st.nextToken().trim();
if(t.length() == 0 || t.startsWith("#")) continue;
if(t.length() > 0) result.add(t);
}
return result;
}
public synchronized void libraryChanged(String path) {
super.libraryChanged(path);
removedPaths.add(new Path(path));
project.getExtensionManager().pathRemoved(path);
}
}