| /** |
| * 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.camel.example.gae; |
| |
| import java.io.InputStream; |
| |
| import javax.xml.parsers.DocumentBuilderFactory; |
| |
| import org.w3c.dom.Document; |
| |
| import org.apache.camel.Exchange; |
| import org.apache.camel.RuntimeCamelException; |
| import org.apache.camel.builder.RouteBuilder; |
| import org.apache.camel.component.gae.mail.GMailBinding; |
| import org.apache.camel.processor.aggregate.AggregationStrategy; |
| |
| |
| public class TutorialRouteBuilder extends RouteBuilder { |
| |
| @Override |
| public void configure() throws Exception { |
| from("ghttp:///weather") |
| .process(new RequestProcessor()) |
| .marshal().serialization() |
| .to("gtask://default") |
| .unmarshal().serialization() |
| .process(new ResponseProcessor()); |
| |
| from("gtask://default") |
| .unmarshal().serialization() |
| .setHeader(Exchange.HTTP_QUERY, constant("weather=").append(ReportData.city())) |
| .enrich("ghttp://www.google.com/ig/api", reportDataAggregator()) |
| .setHeader(GMailBinding.GMAIL_SUBJECT, constant("Weather report")) |
| .setHeader(GMailBinding.GMAIL_SENDER, ReportData.requestor()) |
| .setHeader(GMailBinding.GMAIL_TO, ReportData.recipient()) |
| .process(new ReportGenerator()) |
| .to("gmail://default"); |
| } |
| |
| private static AggregationStrategy reportDataAggregator() { |
| return new AggregationStrategy() { |
| public Exchange aggregate(Exchange reportExchange, Exchange weatherExchange) { |
| ReportData reportData = reportExchange.getIn().getBody(ReportData.class); |
| reportData.setWeather(toDocument(weatherExchange.getIn().getBody(InputStream.class))); |
| return reportExchange; |
| } |
| }; |
| } |
| |
| // As GAE have trouble to load the javax.xml.transform.stax.StAXSource which is used the XmlConverter |
| // Now we just do the transformation ourself. |
| private static DocumentBuilderFactory createDocumentBuilderFactory() { |
| DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); |
| factory.setNamespaceAware(true); |
| factory.setIgnoringElementContentWhitespace(true); |
| factory.setIgnoringComments(true); |
| return factory; |
| } |
| |
| private static Document toDocument(InputStream stream) { |
| DocumentBuilderFactory factory = createDocumentBuilderFactory(); |
| try { |
| Document doc = factory.newDocumentBuilder().parse(stream); |
| return doc; |
| } catch (Exception ex) { |
| throw new RuntimeCamelException(ex); |
| } |
| } |
| |
| } |