| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.karaf.bundle.state.blueprint.internal; |
| |
| import java.io.PrintWriter; |
| import java.io.StringWriter; |
| import java.text.SimpleDateFormat; |
| import java.util.Date; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import org.apache.karaf.bundle.core.BundleState; |
| import org.apache.karaf.bundle.core.BundleStateService; |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.BundleEvent; |
| import org.osgi.framework.BundleListener; |
| import org.osgi.service.blueprint.container.BlueprintEvent; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * TODO: use event instance to receive WAIT topics notifications from blueprint |
| * extender |
| */ |
| public class BlueprintStateService implements org.osgi.service.blueprint.container.BlueprintListener, BundleListener, |
| BundleStateService { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(BlueprintStateService.class); |
| |
| private final Map<Long, BlueprintEvent> states; |
| |
| public BlueprintStateService() { |
| states = new ConcurrentHashMap<Long, BlueprintEvent>(); |
| } |
| |
| @Override |
| public String getName() { |
| return BundleStateService.NAME_BLUEPRINT; |
| } |
| |
| @Override |
| public String getDiag(Bundle bundle) { |
| BlueprintEvent event = states.get(bundle.getBundleId()); |
| if (event == null) { |
| return null; |
| } |
| if (event.getType() != BlueprintEvent.FAILURE && event.getType() != BlueprintEvent.GRACE_PERIOD |
| && event.getType() != BlueprintEvent.WAITING) { |
| return null; |
| } |
| StringBuilder message = new StringBuilder(); |
| Date date = new Date(event.getTimestamp()); |
| SimpleDateFormat df = new SimpleDateFormat(); |
| message.append(df.format(date) + "\n"); |
| if (event.getCause() != null) { |
| message.append("Exception: \n"); |
| addMessages(message, event.getCause()); |
| } |
| if (event.getDependencies() != null) { |
| message.append("Missing dependencies: \n"); |
| for (String dep : event.getDependencies()) { |
| message.append(dep + " "); |
| } |
| message.append("\n"); |
| } |
| return message.toString(); |
| } |
| |
| public void addMessages(StringBuilder message, Throwable ex) { |
| message.append(ex.getMessage()); |
| message.append("\n"); |
| StringWriter errorWriter = new StringWriter(); |
| ex.printStackTrace(new PrintWriter(errorWriter)); |
| message.append(errorWriter.toString()); |
| message.append("\n"); |
| } |
| |
| @Override |
| public BundleState getState(Bundle bundle) { |
| BlueprintEvent event = states.get(bundle.getBundleId()); |
| BundleState state = getState(event); |
| return (bundle.getState() != Bundle.ACTIVE) ? BundleState.Unknown : state; |
| } |
| |
| @Override |
| public void blueprintEvent(BlueprintEvent blueprintEvent) { |
| if (LOG.isDebugEnabled()) { |
| BundleState state = getState(blueprintEvent); |
| LOG.debug("Blueprint app state changed to " + state + " for bundle " |
| + blueprintEvent.getBundle().getBundleId()); |
| } |
| states.put(blueprintEvent.getBundle().getBundleId(), blueprintEvent); |
| } |
| |
| @Override |
| public void bundleChanged(BundleEvent event) { |
| if (event.getType() == BundleEvent.UNINSTALLED) { |
| states.remove(event.getBundle().getBundleId()); |
| } |
| } |
| |
| private BundleState getState(BlueprintEvent blueprintEvent) { |
| if (blueprintEvent == null) { |
| return BundleState.Unknown; |
| } |
| switch (blueprintEvent.getType()) { |
| case BlueprintEvent.CREATING: |
| return BundleState.Starting; |
| case BlueprintEvent.CREATED: |
| return BundleState.Active; |
| case BlueprintEvent.DESTROYING: |
| return BundleState.Stopping; |
| case BlueprintEvent.DESTROYED: |
| return BundleState.Resolved; |
| case BlueprintEvent.FAILURE: |
| return BundleState.Failure; |
| case BlueprintEvent.GRACE_PERIOD: |
| return BundleState.GracePeriod; |
| case BlueprintEvent.WAITING: |
| return BundleState.Waiting; |
| default: |
| return BundleState.Unknown; |
| } |
| } |
| |
| } |