Examples with ResourceEntry org.glassfish.api.deployment.ResourceEntry used on opensource projects

Example 6 with ResourceEntry

use of org.glassfish.api.deployment.ResourceEntry in project Payara by payara.

the class WebappClassLoader method getResource.

/**
 * Find the resource with the given name.  A resource is some data
 * (images, audio, text, etc.) that can be accessed by class code in a
 * way that is independent of the location of the code.  The name of a
 * resource is a "/"-separated path name that identifies the resource.
 * If the resource cannot be found, return <code>null</code>.
 * <p>
 * This method searches according to the following algorithm, returning
 * as soon as it finds the appropriate URL.  If the resource cannot be
 * found, returns <code>null</code>.
 * <ul>
 * <li>If the <code>delegate</code> property is set to <code>true</code>,
 *     call the <code>getResource()</code> method of the parent class
 *     loader, if any.</li>
 * <li>Call <code>findResource()</code> to find this resource in our
 *     locally defined repositories.</li>
 * <li>Call the <code>getResource()</code> method of the parent class
 *     loader, if any.</li>
 * </ul>
 *
 * @param name Name of the resource to return a URL for
 */
@Override
public URL getResource(String name) {
    if (logger.isLoggable(Level.FINER)) {
        logger.log(Level.FINER, "getResource({0})", name);
    }
    URL url = null;
    /*
         * (1) Delegate to parent if requested, or if the requested resource
         * belongs to one of the packages that are part of the Java EE platform
         */
    if (isResourceDelegate(name)) {
        if (logger.isLoggable(Level.FINER)) {
            logger.log(Level.FINER, "{0}  Delegating to parent classloader ", parent);
        }
        ClassLoader loader = parent;
        if (loader == null) {
            loader = system;
        }
        url = loader.getResource(name);
        if (url != null) {
            if (logger.isLoggable(Level.FINER)) {
                logger.log(Level.FINER, "  --> Returning ''{0}''", url.toString());
            }
            return (url);
        }
    }
    // (2) Search local repositories
    url = findResource(name);
    if (url != null) {
        if (antiJARLocking) {
            // Locating the repository for special handling in the case
            // of a JAR
            ResourceEntry entry = resourceEntries.get(name);
            try {
                String repository = entry.codeBase.toString();
                if ((repository.endsWith(".jar")) && !(name.endsWith(".class")) && !(name.endsWith(".jar"))) {
                    // Copy binary content to the work directory if not present
                    File resourceFile = new File(loaderDir, name);
                    url = resourceFile.toURI().toURL();
                }
            } catch (Exception e) {
                logger.log(Level.FINEST, null, e);
            }
        }
        if (logger.isLoggable(Level.FINER)) {
            logger.log(Level.FINER, "  --> Returning ''{0}''", url.toString());
        }
        return (url);
    }
    // (3) Delegate to parent unconditionally if not already attempted
    if (!delegate) {
        ClassLoader loader = parent;
        if (loader == null) {
            loader = system;
        }
        url = loader.getResource(name);
        if (url != null) {
            if (logger.isLoggable(Level.FINER)) {
                logger.log(Level.FINER, "  --> Returning ''{0}''", url.toString());
            }
            return (url);
        }
    }
    // (4) Resource was not found
    if (logger.isLoggable(Level.FINER)) {
        logger.log(Level.FINER, "  --> Resource not found, returning null");
    }
    return null;
}

Example 7 with ResourceEntry

use of org.glassfish.api.deployment.ResourceEntry in project Payara by payara.

the class WebappClassLoader method findClassInternal.

/**
 * Find specified class in local repositories.
 *
 * @param name
 * @return the loaded class, or null if the class isn't found
 * @throws java.lang.ClassNotFoundException
 */
protected ResourceEntry findClassInternal(String name) throws ClassNotFoundException {
    if (!validate(name)) {
        throw new ClassNotFoundException(name);
    }
    String tempPath = name.replace('.', '/');
    String classPath = tempPath + ".class";
    ResourceEntry entry = findResourceInternal(name, classPath);
    if (entry == null) {
        throw new ClassNotFoundException(name);
    }
    synchronized (this) {
        Class<?> clazz = entry.loadedClass;
        if (clazz != null) {
            return entry;
        }
        if (entry.binaryContent == null) {
            throw new ClassNotFoundException(name);
        }
    }
    // Looking up the package
    definePackage(name, entry);
    return entry;
}

Example 8 with ResourceEntry

use of org.glassfish.api.deployment.ResourceEntry in project Payara by payara.

the class WebappClassLoader method clearReferencesStaticFinal.

private void clearReferencesStaticFinal() {
    Collection<ResourceEntry> values = resourceEntries.values();
    Iterator<ResourceEntry> loadedClasses = values.iterator();
    /*
         * Step 1: Enumerate all classes loaded by this WebappClassLoader
         * and trigger the initialization of any uninitialized ones.
         * This is to prevent the scenario where the initialization of
         * one class would call a previously cleared class in Step 2 below.
         */
    while (loadedClasses.hasNext()) {
        ResourceEntry entry = loadedClasses.next();
        Class<?> clazz = null;
        synchronized (this) {
            clazz = entry.loadedClass;
        }
        if (clazz != null) {
            try {
                Field[] fields = clazz.getDeclaredFields();
                for (Field field : fields) {
                    if (Modifier.isStatic(field.getModifiers())) {
                        field.get(null);
                        break;
                    }
                }
            } catch (Throwable t) {
            // Ignore
            }
        }
    }
    /**
     * Step 2: Clear all loaded classes
     */
    loadedClasses = values.iterator();
    while (loadedClasses.hasNext()) {
        ResourceEntry entry = loadedClasses.next();
        Class<?> clazz = null;
        synchronized (this) {
            clazz = entry.loadedClass;
        }
        if (clazz != null) {
            try {
                Field[] fields = clazz.getDeclaredFields();
                for (Field field : fields) {
                    int mods = field.getModifiers();
                    if (field.getType().isPrimitive() || (field.getName().indexOf('$') != -1)) {
                        continue;
                    }
                    if (Modifier.isStatic(mods)) {
                        try {
                            setAccessible(field);
                            if (Modifier.isFinal(mods)) {
                                if (!((field.getType().getName().startsWith("java.")) || (field.getType().getName().startsWith("javax.")))) {
                                    nullInstance(field.get(null));
                                }
                            } else {
                                field.set(null, null);
                                if (logger.isLoggable(Level.FINE)) {
                                    logger.log(Level.FINE, "Set field {0} to null in class {1}", new Object[] { field.getName(), clazz.getName() });
                                }
                            }
                        } catch (Throwable t) {
                            ExceptionUtils.handleThrowable(t);
                            if (logger.isLoggable(Level.FINE)) {
                                logger.log(Level.FINE, "Could not set field " + field.getName() + " to null in class " + clazz.getName(), t);
                            }
                        }
                    }
                }
            } catch (Throwable t) {
                ExceptionUtils.handleThrowable(t);
                if (logger.isLoggable(Level.FINE)) {
                    logger.log(Level.FINE, "Could not clean fields for class " + clazz.getName(), t);
                }
            }
        }
    }
}

Example 9 with ResourceEntry

use of org.glassfish.api.deployment.ResourceEntry in project Payara by payara.

the class WebappClassLoader method findResourceInternalFromJars.

/**
 * Attempts to load the requested resource from this classloader's
 * JAR files.
 *
 * @return The requested resource, or null if not found
 */
private ResourceEntry findResourceInternalFromJars(String name, String path) {
    ResourceEntry entry = null;
    JarEntry jarEntry = null;
    int contentLength = -1;
    InputStream binaryStream = null;
    if (!openJARs()) {
        return null;
    }
    int jarFilesLength = jarFiles.length;
    for (int i = 0; (entry == null) && (i < jarFilesLength); i++) {
        jarEntry = jarFiles[i].getJarEntry(path);
        if (jarEntry != null) {
            entry = new ResourceEntry();
            try {
                entry.codeBase = getURL(jarRealFiles[i]);
                String jarFakeUrl = getURI(jarRealFiles[i]).toString();
                jarFakeUrl = "jar:" + jarFakeUrl + "!/" + path;
                entry.source = new URL(jarFakeUrl);
                entry.lastModified = jarRealFiles[i].lastModified();
            } catch (MalformedURLException e) {
                return null;
            }
            contentLength = (int) jarEntry.getSize();
            try {
                entry.manifest = jarFiles[i].getManifest();
                binaryStream = jarFiles[i].getInputStream(jarEntry);
            } catch (IOException e) {
                return null;
            }
            // Extract resources contained in JAR to the workdir
            if (antiJARLocking && !(path.endsWith(".class"))) {
                File resourceFile = new File(loaderDir, jarEntry.getName());
                if (!resourceFile.exists()) {
                    extractResources();
                }
            }
        }
    }
    if (entry != null) {
        readEntryData(entry, name, binaryStream, contentLength, jarEntry);
    }
    return entry;
}

Example 10 with ResourceEntry

use of org.glassfish.api.deployment.ResourceEntry in project Payara by payara.

the class WebappClassLoader method findResourceInternal.

/**
 * Attempts to find the specified resource in local repositories.
 *
 * @return the loaded resource, or null if the resource isn't found
 */
protected ResourceEntry findResourceInternal(String name, String path) {
    if (!started) {
        throw new IllegalStateException(getString(LogFacade.NOT_STARTED, name));
    }
    if ((name == null) || (path == null)) {
        return null;
    }
    ResourceEntry entry = resourceEntries.get(name);
    if (entry != null) {
        return entry;
    } else if (notFoundResources.containsKey(name)) {
        return null;
    }
    entry = findResourceInternalFromRepositories(name, path);
    if (entry == null) {
        synchronized (jarFilesLock) {
            entry = findResourceInternalFromJars(name, path);
        }
    }
    if (entry == null) {
        notFoundResources.put(name, name);
        return null;
    }
    // Add the entry in the local resource repository
    // Ensures that all the threads which may be in a race to load
    // a particular class all end up with the same ResourceEntry
    // instance
    ResourceEntry entry2 = resourceEntries.putIfAbsent(name, entry);
    if (entry2 != null) {
        entry = entry2;
    }
    return entry;
}