| /* |
| * 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.felix.dm.lambda.samples.future; |
| |
| import static java.lang.System.out; |
| |
| import org.apache.felix.dm.DependencyManager; |
| import org.apache.felix.dm.lambda.DependencyManagerActivator; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.service.log.LogService; |
| |
| /** |
| * This examples show how to use the new "Future" dependency available from the dependencymanager-lambda library. |
| * The PageLink component provides the list of available hrefs found from the Felix web site. |
| * The page is downloaded asynchronously using a CompletableFuture, and the component of the PageLinkImpl class |
| * will wait for the completion of the future before start. |
| * |
| * The interesting thing to look at is located in the PageLinkImpl.init() method. |
| * |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class Activator extends DependencyManagerActivator { |
| /** |
| * Initialize our components using new DM-lambda activator base. |
| */ |
| @Override |
| public void init(BundleContext ctx, DependencyManager dm) throws Exception { |
| out.println("type \"log warn\" to see the logs emitted by this test."); |
| |
| // System.setProperty("http.proxyHost","your.http.proxy.host"); |
| // System.setProperty("http.proxyPort", "your.http.proxy.port"); |
| |
| // Create the PageLinks service, which asynchronously downloads the content of the Felix web page. |
| // The PageLink service will be started once the page has been downloaded (using a CompletableFuture). |
| component(comp -> comp |
| .factory(() -> new PageLinksImpl("http://felix.apache.org/")) |
| .provides(PageLinks.class) |
| .withSvc(LogService.class, log -> log.add(PageLinksImpl::bind))); |
| |
| // Just wait for the PageLinks service and display all links found from the Felix web site. |
| component(comp -> comp.impl(this).withSvc(PageLinks.class, page -> page.add(this::setPageLinks))); |
| } |
| |
| /** |
| * display all the hrefs (links) found from the Felix web site. |
| */ |
| void setPageLinks(PageLinks page) { |
| out.println("Felix site links: " + page.getLinks()); |
| } |
| } |