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package com.sun.enterprise.module.single;
import com.sun.enterprise.module.ModuleDefinition;
import com.sun.enterprise.module.ModuleMetadata;
import com.sun.enterprise.module.ModuleDependency;
import com.sun.enterprise.module.common_impl.ByteArrayInhabitantsDescriptor;
import com.sun.hk2.component.InhabitantsFile;
import java.net.*;
import java.util.*;
import java.util.jar.Manifest;
import java.io.IOException;
import java.io.InputStream;
import java.io.DataInputStream;
import java.io.File;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Creates a ModuleDefinition backed up by a a single classloader
*
* @author Jerome Dochez
*/
public class ProxyModuleDefinition implements ModuleDefinition {
private final ModuleMetadata metadata = new ModuleMetadata();
private final Manifest manifest;
public ProxyModuleDefinition(ClassLoader classLoader) throws IOException {
this(classLoader, null, Collections.singleton("default"));
}
public ProxyModuleDefinition(ClassLoader classLoader, List<ManifestProxy.SeparatorMappings> mappings) throws IOException {
this(classLoader, mappings, Collections.singleton("default"));
}
public ProxyModuleDefinition(ClassLoader classLoader, List<ManifestProxy.SeparatorMappings> mappings,
Collection<String> habitatNames) throws IOException {
manifest = new ManifestProxy(classLoader, mappings);
for (String habitatName : habitatNames) {
Enumeration<URL> inhabitants = classLoader.getResources(InhabitantsFile.PATH+'/'+habitatName);
Set<File> processedFiles = new HashSet<File>();
while (inhabitants.hasMoreElements()) {
URL url = inhabitants.nextElement();
if (url.getProtocol().equals("jar")) {
int index = url.getPath().indexOf("!");
if (index>0 && url.getPath().length()>5) {
String path = url.getPath().substring(5, url.getPath().indexOf("!"));
File f = new File(URLDecoder.decode(path));
if (f.exists()) {
f = f.getCanonicalFile();
if (processedFiles.contains(f)) {
continue;
}
processedFiles.add(f);
}
}
}
metadata.addHabitat(habitatName,
new ByteArrayInhabitantsDescriptor(url, readFully(url))
);
}
}
if (classLoader instanceof URLClassLoader) {
URLClassLoader urlCL = (URLClassLoader) classLoader;
for (URL url : urlCL.getURLs()) {
try {
uris.add(url.toURI());
} catch (URISyntaxException e) {
Logger.getAnonymousLogger().log(Level.SEVERE, e.getMessage(), e);
}
}
}
}
private static byte[] readFully(URL url) throws IOException {
DataInputStream dis=null;
try {
URLConnection con = url.openConnection();
int len = con.getContentLength();
InputStream in = con.getInputStream();
dis = new DataInputStream(in);
byte[] bytes = new byte[len];
dis.readFully(bytes);
return bytes;
} catch (IOException e) {
IOException x = new IOException("Failed to read " + url);
x.initCause(e);
throw x;
} finally {
if (dis!=null)
dis.close();
}
}
public String getName() {
return "Static Module";
}
public String[] getPublicInterfaces() {
return new String[0];
}
public ModuleDependency[] getDependencies() {
return EMPTY_MODULE_DEFINITIONS_ARRAY;
}
public URI[] getLocations() {
return uris.toArray(new URI[uris.size()]);
}
public String getVersion() {
return "1.0.0";
}
public String getImportPolicyClassName() {
return null;
}
public String getLifecyclePolicyClassName() {
return null;
}
public Manifest getManifest() {
return manifest;
}
public ModuleMetadata getMetadata() {
return metadata;
}
private static boolean ok(String s) {
return s != null && s.length() > 0;
}
private static boolean ok(String[] ss) {
return ss != null && ss.length > 0;
}
private static final ModuleDependency[] EMPTY_MODULE_DEFINITIONS_ARRAY = new ModuleDependency[0];
private static final List<URI> uris = new ArrayList<URI>();
static {
// It is impossible to change java.class.path after the JVM starts --
// so cache away a copy...
String cp = System.getProperty("java.class.path");
if(ok(cp)) {
String[] paths = cp.split(System.getProperty("path.separator"));
if(ok(paths)) {
for(int i = 0; i < paths.length; i++) {
uris.add(new File(paths[i]).toURI());
}
}
}
}
}