| /* |
| * 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.scr.command; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.locks.ReadWriteLock; |
| import java.util.concurrent.locks.ReentrantReadWriteLock; |
| |
| import org.apache.karaf.shell.commands.Action; |
| import org.apache.karaf.shell.commands.basic.AbstractCommand; |
| import org.apache.felix.scr.ScrService; |
| import org.apache.karaf.scr.command.action.ScrActionSupport; |
| import org.apache.karaf.scr.command.completer.ScrCompleterSupport; |
| import org.apache.karaf.shell.console.CompletableFunction; |
| import org.apache.karaf.shell.console.Completer; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public abstract class ScrCommandSupport extends AbstractCommand implements CompletableFunction { |
| |
| protected final Logger logger = LoggerFactory.getLogger(getClass().getName()); |
| |
| private ScrService scrService; |
| private ReadWriteLock lock = new ReentrantReadWriteLock(); |
| |
| @Override |
| public abstract Class<? extends Action> getActionClass(); |
| |
| public abstract List<Class<? extends Completer>> getCompleterClasses(); |
| |
| @Override |
| public Action createNewAction() { |
| try { |
| lock.readLock().lock(); |
| ScrActionSupport action = (ScrActionSupport) getActionClass().newInstance(); |
| action.setScrService(getScrService()); |
| return action; |
| } catch (InstantiationException e) { |
| throw new RuntimeException(e); |
| } catch (IllegalAccessException e) { |
| throw new RuntimeException(e); |
| } finally { |
| lock.readLock().unlock(); |
| } |
| } |
| |
| public List<Completer> getCompleters() { |
| List<Completer> completers = null; |
| |
| if (getCompleterClasses() != null) { |
| try { |
| lock.readLock().lock(); |
| completers = new ArrayList<Completer>(); |
| for (Class<? extends Completer> completerClass : getCompleterClasses()) { |
| ScrCompleterSupport ccs = (ScrCompleterSupport) completerClass.newInstance(); |
| ccs.setScrService(scrService); |
| completers.add(ccs); |
| } |
| |
| } catch (InstantiationException e) { |
| throw new RuntimeException(e); |
| } catch (IllegalAccessException e) { |
| throw new RuntimeException(e); |
| } finally { |
| lock.readLock().unlock(); |
| } |
| } |
| return completers; |
| } |
| |
| public Map<String, Completer> getOptionalCompleters() { |
| return null; |
| } |
| |
| /** |
| * Returns the instance of ScrService for this instance of ScrCommandSupport. |
| * |
| * @return the ScrCommandSupport or null |
| */ |
| public ScrService getScrService() { |
| return scrService; |
| } |
| |
| public void setScrService(ScrService scrService) { |
| try { |
| lock.writeLock().lock(); |
| this.scrService = scrService; |
| } finally { |
| lock.writeLock().unlock(); |
| } |
| } |
| |
| public void unsetScrService(ScrService scrService) { |
| try { |
| lock.writeLock().lock(); |
| this.scrService = null; |
| } finally { |
| lock.writeLock().unlock(); |
| } |
| } |
| |
| } |