+++ /dev/null
-/*
- * Copyright (c) 2013, 2017 Cisco Systems, Inc. and others. All rights reserved.
- *
- * This program and the accompanying materials are 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
- */
-package org.opendaylight.controller.config.manager.impl.osgi.mapping;
-
-import com.google.common.io.Resources;
-import java.io.IOException;
-import java.net.URL;
-import java.nio.charset.StandardCharsets;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.LinkedList;
-import java.util.List;
-import org.opendaylight.yangtools.concepts.ObjectRegistration;
-import org.opendaylight.yangtools.yang.binding.YangModelBindingProvider;
-import org.opendaylight.yangtools.yang.binding.YangModuleInfo;
-import org.osgi.framework.Bundle;
-import org.osgi.framework.BundleEvent;
-import org.osgi.util.tracker.BundleTracker;
-import org.osgi.util.tracker.BundleTrackerCustomizer;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-/**
- * Tracks bundles and attempts to retrieve YangModuleInfo, which is then fed
- * into ModuleInfoRegistry.
- */
-public final class ModuleInfoBundleTracker
- implements AutoCloseable, BundleTrackerCustomizer<Collection<ObjectRegistration<YangModuleInfo>>> {
-
- private static final Logger LOG = LoggerFactory.getLogger(ModuleInfoBundleTracker.class);
-
- public static final String MODULE_INFO_PROVIDER_PATH_PREFIX = "META-INF/services/";
- private static final String YANG_MODULE_INFO_SERVICE_PATH = MODULE_INFO_PROVIDER_PATH_PREFIX
- + YangModelBindingProvider.class.getName();
-
- private final RefreshingSCPModuleInfoRegistry moduleInfoRegistry;
-
- private BundleTracker<Collection<ObjectRegistration<YangModuleInfo>>> tracker;
- private boolean starting;
-
- public ModuleInfoBundleTracker(final RefreshingSCPModuleInfoRegistry moduleInfoRegistry) {
- this.moduleInfoRegistry = moduleInfoRegistry;
- }
-
- public void open(final BundleTracker<Collection<ObjectRegistration<YangModuleInfo>>> bundleTracker) {
- LOG.debug("ModuleInfoBundleTracker open starting with bundleTracker {}", bundleTracker);
-
- if (bundleTracker != null) {
- this.tracker = bundleTracker;
- starting = true;
- bundleTracker.open();
-
- starting = false;
- moduleInfoRegistry.updateService();
- } else {
- starting = false;
- }
-
- LOG.debug("ModuleInfoBundleTracker open complete");
- }
-
- @Override
- public void close() {
- if (tracker != null) {
- tracker.close();
- tracker = null;
- }
- }
-
- @Override
- @SuppressWarnings("IllegalCatch")
- public Collection<ObjectRegistration<YangModuleInfo>> addingBundle(final Bundle bundle, final BundleEvent event) {
- URL resource = bundle.getEntry(YANG_MODULE_INFO_SERVICE_PATH);
- LOG.debug("Got addingBundle({}) with YangModelBindingProvider resource {}", bundle, resource);
- if (resource == null) {
- return Collections.emptyList();
- }
- List<ObjectRegistration<YangModuleInfo>> registrations = new LinkedList<>();
-
- try {
- for (String moduleInfoName : Resources.readLines(resource, StandardCharsets.UTF_8)) {
- LOG.trace("Retrieve ModuleInfo({}, {})", moduleInfoName, bundle);
- YangModuleInfo moduleInfo = retrieveModuleInfo(moduleInfoName, bundle);
- registrations.add(moduleInfoRegistry.registerModuleInfo(moduleInfo));
- }
-
- if (!starting) {
- moduleInfoRegistry.updateService();
- }
- } catch (final IOException e) {
- LOG.error("Error while reading {} from bundle {}", resource, bundle, e);
- } catch (final RuntimeException e) {
- LOG.error("Failed to process {} for bundle {}", resource, bundle, e);
- }
-
- LOG.trace("Got following registrations {}", registrations);
- return registrations;
- }
-
- @Override
- public void modifiedBundle(final Bundle bundle, final BundleEvent event,
- final Collection<ObjectRegistration<YangModuleInfo>> object) {
- }
-
- @Override
- @SuppressWarnings("IllegalCatch")
- public void removedBundle(final Bundle bundle, final BundleEvent event,
- final Collection<ObjectRegistration<YangModuleInfo>> regs) {
- if (regs == null) {
- return;
- }
-
- for (ObjectRegistration<YangModuleInfo> reg : regs) {
- try {
- reg.close();
- } catch (final Exception e) {
- LOG.error("Unable to unregister YangModuleInfo {}", reg.getInstance(), e);
- }
- }
- }
-
- private static YangModuleInfo retrieveModuleInfo(final String moduleInfoClass, final Bundle bundle) {
- String errorMessage;
- Class<?> clazz = loadClass(moduleInfoClass, bundle);
-
- if (!YangModelBindingProvider.class.isAssignableFrom(clazz)) {
- errorMessage = logMessage("Class {} does not implement {} in bundle {}", clazz,
- YangModelBindingProvider.class, bundle);
- throw new IllegalStateException(errorMessage);
- }
- final YangModelBindingProvider instance;
- try {
- Object instanceObj = clazz.newInstance();
- instance = YangModelBindingProvider.class.cast(instanceObj);
- } catch (final InstantiationException e) {
- errorMessage = logMessage("Could not instantiate {} in bundle {}, reason {}", moduleInfoClass, bundle, e);
- throw new IllegalStateException(errorMessage, e);
- } catch (final IllegalAccessException e) {
- errorMessage = logMessage("Illegal access during instantiation of class {} in bundle {}, reason {}",
- moduleInfoClass, bundle, e);
- throw new IllegalStateException(errorMessage, e);
- }
-
- try {
- return instance.getModuleInfo();
- } catch (NoClassDefFoundError | ExceptionInInitializerError e) {
- throw new IllegalStateException("Error while executing getModuleInfo on " + instance, e);
- }
- }
-
- private static Class<?> loadClass(final String moduleInfoClass, final Bundle bundle) {
- try {
- return bundle.loadClass(moduleInfoClass);
- } catch (final ClassNotFoundException e) {
- String errorMessage = logMessage("Could not find class {} in bundle {}, reason {}", moduleInfoClass, bundle,
- e);
- throw new IllegalStateException(errorMessage);
- }
- }
-
- public static String logMessage(final String slfMessage, final Object... params) {
- LOG.info(slfMessage, params);
- String formatMessage = slfMessage.replaceAll("\\{\\}", "%s");
- return String.format(formatMessage, params);
- }
-}
Code Review / controller.git / blobdiff