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diff --git a/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/README b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/README new file mode 100644 index 0000000000..f73baec2fd --- /dev/null +++ b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/README @@ -0,0 +1,110 @@ +Feed Aggregator Sample +====================================== +This sample demonstrates using the Feed binding to aggregate ATOM and RSS +feeds and publish a new aggregated feed. + +The README in the samples directory (the directory above this) provides +general instructions about building and running samples. Take a look there +first. + +If you run the sample using ant, navigate to this sample directory and do: + +ant run + +OR if you don't have ant, on Windows do + +java -cp ..\..\lib\tuscany-sca-manifest.jar;target\sample-feed-aggregator.jar launch.LaunchFeedServer + +and on *nix do + +java -cp ../../lib/tuscany-sca-manifest.jar:target/sample-feed-aggregator.jar launch.LaunchFeedServer + +You should see the following output on the screen. + +run: + [java] Added Servlet mapping: http://localhost:8083/rssAggregator + [java] Added Servlet mapping: http://localhost:8083/atomAggregator/* + [java] Sample Feed server started (press enter to shutdown) + + [java] To read the aggregated feeds, point your Web browser to the following addresses: + [java] http://localhost:8083/atomAggregator + [java] http://localhost:8083/atomAggregator/atomsvc (for the Atom service document) + [java] http://localhost:8083/rssAggregator + +As this point the aggregated Feeds are exposed by a web server started +automatically by the SCA runtime. You can later stop the server by pressing enter. + +Now that the server is started you can point your Web browser to each URL of the +aggregated feeds to see the information in your broswer. These URLs are: + +http://localhost:8083/atomAggregator +http://localhost:8083/atomAggregator/atomsvc +http://localhost:8083/rssAggregator + +** Please note that if your browser is not configured correctly to receive +feed information, you will be prompted to open each file that contains the feed +information in xml. + +Sample Overview +--------------- +The sample provides a single component exposing a Web resource. + +web-resource/ + src/ + main/ + java/ + feed/ + AggregatorImpl.java - implementation of the Feed + aggregator component + Sort.java - utilty interface + SortImpl.java - implementation of the Sort component + launch + LaunchFeedServer.java - starts the SCA Runtime and + publishes the aggregated feeds + resources/ + FeedAggregator.composite - the SCA assembly for this sample + feed-aggregator.png - a pictorial representation of the + sample .composite file + build.xml - the Ant build file + pom.xml - the Maven build file + + +Details of how this sample works +-------------------------------- +1. AggregatorImpl is used to implement the two main components here (RSSAggregator & AtomAggregator). +2. AggregatorImpl directly implements the Tuscany Atom Collection interface. It is a component + that provides an Atom feed to respond (see tuscany/modules/binding-atom-abdera) +3. The AggregatorImpl component is not explicitly configured using nested <service> element nor its + implementation class is annotated with @Service annotation. Instead, the Tuscany Atom Collection interface + defines its services using @Remotable annotation. + +Building And Running The Sample Using Ant +----------------------------------------- +With the binary distribution the sample can be built and run using Ant using the +following commands + +cd feed-aggregator +ant compile +ant run + +You should see the following output from the run target. + +run: + [java] Added Servlet mapping: http://localhost:8083/rssAggregator + [java] Added Servlet mapping: http://localhost:8083/atomAggregator/* + [java] Sample Feed server started (press enter to shutdown) + + [java] To read the aggregated feeds, point your Web browser to the following addresses: + [java] http://localhost:8083/atomAggregator + [java] http://localhost:8083/atomAggregator/atomsvc (for the Atom service document) + [java] http://localhost:8083/rssAggregator + + +Building The Sample Using Maven +------------------------------------------- +With either the binary or source distributions the sample can be built using +Maven as follows. + +cd feed-aggregator +mvn + diff --git a/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/build.xml b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/build.xml new file mode 100644 index 0000000000..0ab6fed7fc --- /dev/null +++ b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/build.xml @@ -0,0 +1,72 @@ +<!-- + * 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. +--> +<project name="feed-aggregator" default="compile"> + <property name="test.class" value="launch.LaunchFeedServer" /> + <property name="test.jar" value="sample-feed-aggregator.jar" /> + + <target name="init"> + <mkdir dir="target/classes"/> + </target> + + <target name="compile" depends="init"> + <javac srcdir="src/main/java" + destdir="target/classes" + debug="on" + source="1.5" + target="1.5"> + <classpath> + <pathelement location="../../lib/tuscany-sca-manifest.jar"/> + </classpath> + </javac> + <copy todir="target/classes"> + <fileset dir="src/main/resources"/> + </copy> + <jar destfile="target/${test.jar}" basedir="target/classes"> + <manifest> + <attribute name="Main-Class" value="${test.class}" /> + </manifest> + </jar> + </target> + + <target name="run-classes"> + <java classname="${test.class}" + fork="true"> + <classpath> + <pathelement path="target/classes"/> + <pathelement location="../../lib/tuscany-sca-manifest.jar"/> + </classpath> + </java> + </target> + + <target name="run"> + <java classname="${test.class}" + fork="true"> + <classpath> + <pathelement path="target/${test.jar}"/> + <pathelement location="../../lib/tuscany-sca-manifest.jar"/> + </classpath> + </java> + </target> + + <target name="clean"> + <delete quiet="true" includeemptydirs="true"> + <fileset dir="target"/> + </delete> + </target> +</project> diff --git a/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/feed-aggregator.png b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/feed-aggregator.png Binary files differnew file mode 100644 index 0000000000..c8fea8a7b8 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/feed-aggregator.png diff --git a/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/feed-aggregator.svg b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/feed-aggregator.svg new file mode 100644 index 0000000000..72fe6a00ac --- /dev/null +++ b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/feed-aggregator.svg @@ -0,0 +1,364 @@ +<?xml version="1.0" encoding="UTF-8" standalone="no"?> +<!-- + * 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. 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+ y="510.52304" + id="text5050"><tspan + sodipodi:role="line" + id="tspan5052" + x="752.85712" + y="510.52304">Apache</tspan></text> + <path + style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" + d="M 165.71429,286.23734 L 300.71429,286.23734" + id="path5054" /> + <path + style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" + d="M 168.57143,468.3802 L 300.71429,469.80877" + id="path5056" /> + <flowRoot + xml:space="preserve" + id="flowRoot5058"><flowRegion + id="flowRegion5060"><rect + id="rect5062" + width="27.142857" + height="20.714285" + x="122.85714" + y="276.23734" /></flowRegion><flowPara + id="flowPara5064">RSS</flowPara></flowRoot> <flowRoot + xml:space="preserve" + id="flowRoot5066"><flowRegion + id="flowRegion5068"><rect + id="rect5070" + width="36.428574" + height="19.285715" + x="122.85714" + y="459.80878" /></flowRegion><flowPara + id="flowPara5072">Atom</flowPara></flowRoot> </g> +</svg> diff --git a/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/pom.xml b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/pom.xml new file mode 100644 index 0000000000..ea35191945 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/pom.xml @@ -0,0 +1,84 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!-- + * 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. +--> +<project> + <modelVersion>4.0.0</modelVersion> + <parent> + <groupId>org.apache.tuscany.sca</groupId> + <artifactId>tuscany-sca</artifactId> + <version>1.4.1-SNAPSHOT</version> + <relativePath>../pom.xml</relativePath> + </parent> + <artifactId>sample-feed-aggregator</artifactId> + <name>Apache Tuscany SCA Sample Atom+RSS Feed Aggregator</name> + + <repositories> + <repository> + <id>apache.incubator</id> + <url>http://people.apache.org/repo/m2-incubating-repository</url> + </repository> + </repositories> + + <dependencies> + <dependency> + <groupId>org.apache.tuscany.sca</groupId> + <artifactId>tuscany-host-embedded</artifactId> + <version>1.4.1-SNAPSHOT</version> + </dependency> + + <dependency> + <groupId>org.apache.tuscany.sca</groupId> + <artifactId>tuscany-binding-rss-rome</artifactId> + <version>1.4.1-SNAPSHOT</version> + </dependency> + + <dependency> + <groupId>org.apache.tuscany.sca</groupId> + <artifactId>tuscany-binding-atom-abdera</artifactId> + <version>1.4.1-SNAPSHOT</version> + </dependency> + + <dependency> + <groupId>org.apache.tuscany.sca</groupId> + <artifactId>tuscany-implementation-java-runtime</artifactId> + <version>1.4.1-SNAPSHOT</version> + <scope>runtime</scope> + </dependency> + + <dependency> + <groupId>org.apache.tuscany.sca</groupId> + <artifactId>tuscany-host-tomcat</artifactId> + <version>1.4.1-SNAPSHOT</version> + <scope>runtime</scope> + </dependency> + + <dependency> + <groupId>junit</groupId> + <artifactId>junit</artifactId> + <version>4.5</version> + <scope>test</scope> + </dependency> + + </dependencies> + + <build> + <finalName>${artifactId}</finalName> + </build> + +</project> diff --git a/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/src/main/java/feed/AggregatorImpl.java b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/src/main/java/feed/AggregatorImpl.java new file mode 100644 index 0000000000..70e05b3bb3 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/src/main/java/feed/AggregatorImpl.java @@ -0,0 +1,188 @@ +/* + * 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 feed; + +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.OutputStreamWriter; +import java.util.ArrayList; +import java.util.Date; +import java.util.List; + +import org.apache.abdera.Abdera; +import org.apache.abdera.factory.Factory; +import org.apache.abdera.model.Document; +import org.apache.abdera.model.Entry; +import org.apache.abdera.model.Feed; +import org.apache.abdera.model.Person; +import org.apache.abdera.parser.Parser; +import org.apache.tuscany.sca.binding.atom.collection.Collection; +import org.apache.tuscany.sca.binding.atom.collection.NotFoundException; +import org.osoa.sca.annotations.Property; +import org.osoa.sca.annotations.Reference; + +import com.sun.syndication.feed.synd.SyndFeed; +import com.sun.syndication.io.SyndFeedOutput; + +/** + * Implementation of an SCA component that aggregates several + * Atom and RSS feeds. + * + * @version $Rev$ $Date$ + */ +public class AggregatorImpl implements org.apache.tuscany.sca.binding.atom.collection.Collection { + + @Reference(required = false) + public Collection atomFeed1; + @Reference(required = false) + public Collection atomFeed2; + + @Reference(required = false) + public org.apache.tuscany.sca.binding.rss.collection.Collection rssFeed1; + @Reference(required = false) + public org.apache.tuscany.sca.binding.rss.collection.Collection rssFeed2; + + @Reference(required = false) + public Sort sort; + + @Property + public String feedTitle = "Aggregated Feed"; + @Property + public String feedDescription = "Anonymous Aggregated Feed"; + @Property + public String feedAuthor = "anonymous"; + + public Feed getFeed() { + + // Create a new Feed + Factory factory = Abdera.getNewFactory(); + Feed feed = factory.newFeed(); + feed.setTitle(feedTitle); + feed.setSubtitle(feedDescription); + Person author = factory.newAuthor(); + author.setName(feedAuthor); + feed.addAuthor(author); + feed.addLink("http://tuscany.apache.org/", "alternate"); + + // Aggregate entries from atomFeed1, atomFeed2, rssFeed1 and rssFeed2 + List<Entry> entries = new ArrayList<Entry>(); + if (atomFeed1 != null) { + try { + entries.addAll(atomFeed1.getFeed().getEntries()); + } catch (Exception e) {} + } + if (atomFeed2 != null) { + try { + entries.addAll(atomFeed2.getFeed().getEntries()); + } catch (Exception e) {} + } + if (rssFeed1 != null) { + try { + entries.addAll(atomFeed(rssFeed1.getFeed()).getEntries()); + } catch (Exception e) {} + } + if (rssFeed2 != null) { + try { + entries.addAll(atomFeed(rssFeed2.getFeed()).getEntries()); + } catch (Exception e) {} + } + + // Sort entries by updated date + if (sort != null) { + entries = sort.sort(entries); + } + + // Add the entries to the new feed + // Also synthesize a feed id and updated field base on entries + Date feedUpdated = new Date( 0 ); + for (Entry entry: entries) { + Date entryUpdated = entry.getUpdated(); + if (( entryUpdated != null ) && ( entryUpdated.compareTo( feedUpdated ) > 0 )) { + feedUpdated = entryUpdated; + } + feed.addEntry(entry); + } + feed.setUpdated( feedUpdated ); + // Note that feed id should be permanent, immutable, and unique + // in order to support proper ETag creation. + // Tough to do when the feed is regenerated with each get. + feed.setId( "http://tuscany.apache.org/feed", true ); + + return feed; + } + + public Feed query(String queryString) { + Factory factory = Abdera.getNewFactory(); + Feed feed = factory.newFeed(); + feed.setTitle(feedTitle); + feed.setSubtitle(feedDescription); + Person author = factory.newAuthor(); + author.setName(feedAuthor); + feed.addAuthor(author); + feed.addLink("http://tuscany.apache.org", "alternate"); + + Feed allFeed = getFeed(); + if (queryString.startsWith("title=")) { + String title = queryString.substring(6); + + for (Entry entry: allFeed.getEntries()) { + if (entry.getTitle().contains(title)) { + feed.addEntry(entry); + } + } + } + return feed; + } + + public void delete(String id) throws NotFoundException { + } + + public Entry get(String id) throws NotFoundException { + return null; + } + + public Entry post(Entry entry) { + return null; + } + + public void put(String id, Entry entry) throws NotFoundException { + } + + /** + * Convert a ROME feed to an Abdera feed. + * + * @param romeFeed + * @return + */ + private static Feed atomFeed(SyndFeed syndFeed) { + ByteArrayOutputStream bos = new ByteArrayOutputStream(); + + syndFeed.setFeedType("atom_1.0"); + SyndFeedOutput syndOutput = new SyndFeedOutput(); + try { + syndOutput.output(syndFeed, new OutputStreamWriter(bos)); + } catch (Exception e) { + throw new RuntimeException(e); + } + Parser parser = Abdera.getNewParser(); + Document<Feed> document = parser.parse(new ByteArrayInputStream(bos.toByteArray())); + + return document.getRoot(); + } +} diff --git a/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/src/main/java/feed/Sort.java b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/src/main/java/feed/Sort.java new file mode 100644 index 0000000000..dec073c36b --- /dev/null +++ b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/src/main/java/feed/Sort.java @@ -0,0 +1,38 @@ +/* + * 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 feed; + +import java.util.List; + +import org.apache.abdera.model.Entry; + +/** + * The Sort service business interface. + * + * @version $Rev$ $Date$ + */ +public interface Sort { + + /** + * Sort feed entries by published date. + * @param entries + * @return + */ + List<Entry> sort(List<Entry> entries); +} diff --git a/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/src/main/java/feed/SortImpl.java b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/src/main/java/feed/SortImpl.java new file mode 100644 index 0000000000..f7ead126a7 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/src/main/java/feed/SortImpl.java @@ -0,0 +1,57 @@ +/* + * 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 feed; + +import java.util.Arrays; +import java.util.Comparator; +import java.util.Date; +import java.util.List; + +import org.apache.abdera.model.Entry; +import org.osoa.sca.annotations.Property; + +/** + * Implementation of a Feed Sort service component. + * + * @version $Rev$ $Date$ + */ +public class SortImpl implements Sort { + + @Property + public boolean newFirst = true; + + @SuppressWarnings("unchecked") + public List<Entry> sort(List<Entry> entries) { + Entry[] entriesArray = new Entry[entries.size()]; + entriesArray = (Entry[])entries.toArray(entriesArray); + Arrays.sort(entriesArray, new Comparator() { + public int compare(final Object xObj, final Object yObj) { + Date xDate = ((Entry)xObj).getUpdated(); + Date yDate = ((Entry)yObj).getUpdated(); + if (xDate == null) + return -1; + if (newFirst) + return yDate.compareTo(xDate); + else + return xDate.compareTo(yDate); + } + }); + return Arrays.asList(entriesArray); + } +} diff --git a/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/src/main/java/launch/LaunchFeedServer.java b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/src/main/java/launch/LaunchFeedServer.java new file mode 100644 index 0000000000..1c549f7cd2 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/src/main/java/launch/LaunchFeedServer.java @@ -0,0 +1,47 @@ +/* + * 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 launch; + +import java.io.IOException; + +import org.apache.tuscany.sca.host.embedded.SCADomain; + +public class LaunchFeedServer { + public static void main(String[] args) throws Exception { + SCADomain scaDomain = SCADomain.newInstance("FeedAggregator.composite"); + + try { + System.out.println("Sample Feed server started (press enter to shutdown)"); + System.out.println(); + System.out.println("To read the aggregated feeds, point your Web browser to the following addresses:"); + System.out.println("http://localhost:8083/atomAggregator"); + System.out.println("http://localhost:8083/atomAggregator/atomsvc (for the Atom service document)"); + System.out.println("http://localhost:8083/rssAggregator"); + System.out.println(); + System.in.read(); + } catch (IOException e) { + e.printStackTrace(); + } + + + scaDomain.close(); + System.out.println("Sample Feed server stopped"); + } +} diff --git a/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/src/main/resources/FeedAggregator.composite b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/src/main/resources/FeedAggregator.composite new file mode 100644 index 0000000000..8a3a53b4d5 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/src/main/resources/FeedAggregator.composite @@ -0,0 +1,60 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!-- + * 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. +--> +<composite xmlns="http://www.osoa.org/xmlns/sca/1.0" + xmlns:tuscany="http://tuscany.apache.org/xmlns/sca/1.0" + targetNamespace="http://aggregator" + name="FeedAggregator"> + + <service name="rssSample" promote="RssAggregator"> + <tuscany:binding.atom uri="http://localhost:8083/rssAggregator"/> + </service> + <service name="atomSample" promote="AtomAggregator"> + <tuscany:binding.atom uri="http://localhost:8083/atomAggregator"/> + </service> + + <component name="RssAggregator"> + <implementation.java class="feed.AggregatorImpl"/> + <reference name="rssFeed1"> + <tuscany:binding.rss uri="http://newsrss.bbc.co.uk/rss/newsonline_uk_edition/world/rss.xml"/> + </reference> + <reference name="rssFeed2"> + <tuscany:binding.rss uri="http://www.engadget.com/rss.xml"/> + </reference> + <reference name="sort" target="Sort"/> + <property name="feedTitle">RSS Aggregator Sample</property> + </component> + <component name="Sort"> + <implementation.java class="feed.SortImpl"/> + <property name="newFirst">true</property> + </component> + + <component name="AtomAggregator"> + <implementation.java class="feed.AggregatorImpl"/> + <reference name="sort" target="Sort"/>
+ <reference name="atomFeed1"> + <tuscany:binding.atom uri="http://www.oreillynet.com/pub/feed/35"/> + </reference> + <reference name="atomFeed2"> + <tuscany:binding.atom uri="http://feeds.feedburner.com/blogspot/Dcni?format=xml"/> + </reference> + <property name="feedTitle">Atom Aggregator Sample</property> + </component> + +</composite> diff --git a/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/src/test/java/feed/FeedAggregatorTest.java b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/src/test/java/feed/FeedAggregatorTest.java new file mode 100644 index 0000000000..16b16bf49f --- /dev/null +++ b/sca-java-1.x/branches/sca-java-1.4/samples/feed-aggregator/src/test/java/feed/FeedAggregatorTest.java @@ -0,0 +1,350 @@ +/*
+ * 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 feed;
+
+import java.io.IOException;
+import java.io.Reader;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Date;
+import java.util.List;
+
+import junit.framework.Assert;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import org.apache.tuscany.sca.host.embedded.SCADomain;
+
+import org.apache.abdera.Abdera;
+import org.apache.abdera.i18n.iri.IRI;
+import org.apache.abdera.factory.Factory;
+import org.apache.abdera.model.Base;
+import org.apache.abdera.model.Content;
+import org.apache.abdera.model.Entry;
+import org.apache.abdera.model.Feed;
+import org.apache.abdera.model.Document;
+import org.apache.abdera.model.Collection;
+import org.apache.abdera.protocol.Response.ResponseType;
+import org.apache.abdera.protocol.client.AbderaClient;
+import org.apache.abdera.protocol.client.ClientResponse;
+import org.apache.abdera.protocol.client.RequestOptions;
+import org.apache.abdera.util.EntityTag;
+import org.apache.abdera.writer.Writer;
+import org.apache.abdera.writer.WriterFactory;
+import org.apache.abdera.parser.Parser;
+
+/**
+ * Tests use of server provided feed entity tags for Atom binding in Tuscany.
+ * Tests conditional gets (e.g. get if-none-match) or conditional posts (post if-match)
+ * using entity tags and last modified entries in headers.
+ * Uses the SCA provided Provider composite to act as a server.
+ * Uses the Abdera provided Client to act as a client.
+ */
+public class FeedAggregatorTest {
+ public final static String providerURI = "http://localhost:8083/atomAggregator";
+ protected static SCADomain scaProviderDomain;
+ protected static Abdera abdera;
+ protected static AbderaClient client;
+ protected static Parser abderaParser;
+ protected static String eTag;
+ protected static Date lastModified;
+ protected static long contentLength;
+ protected static int numberEntries;
+ protected static final SimpleDateFormat dateFormat = new SimpleDateFormat( "EEE, dd MMM yyyy HH:mm:ss Z" ); // RFC 822 date time
+
+ @BeforeClass
+ public static void init() throws Exception {
+ try {
+ System.out.println(">>>FeedAggregatorTest.init");
+ scaProviderDomain = SCADomain.newInstance("FeedAggregator.composite");
+ abdera = new Abdera();
+ client = new AbderaClient(abdera);
+ abderaParser = Abdera.getNewParser();
+ } catch ( Throwable e ) {
+ System.out.println( e );
+ e.printStackTrace();
+ }
+ }
+
+ @AfterClass
+ public static void destroy() throws Exception {
+ System.out.println(">>>FeedAggregatorTest.destroy");
+ scaProviderDomain.close();
+ }
+
+ @Test
+ public void testPrelim() throws Exception {
+ Assert.assertNotNull(scaProviderDomain);
+ Assert.assertNotNull( client );
+ }
+
+ @Test
+ public void testFeedBasics() throws Exception {
+ System.out.println(">>>FeedAggregatorTest.testFeedBasics");
+ RequestOptions opts = new RequestOptions();
+ // Normal feed request
+ ClientResponse res = client.get(providerURI, opts);
+ Assert.assertNotNull(res);
+ try {
+ // Asser feed provided since no predicates
+ Assert.assertEquals(200, res.getStatus());
+ Assert.assertEquals(ResponseType.SUCCESS, res.getType());
+ // AtomTestCaseUtils.printResponseHeaders( "Feed response headers:", " ", res );
+
+ // Perform other tests on feed.
+ contentLength = getContentLength( res );
+ System.out.println( "FeedAggregatorTest.testFeedBasics full contentLength=" + contentLength );
+
+ Document<Feed> doc = res.getDocument();
+ Assert.assertNotNull( doc );
+ Feed feed = doc.getRoot();
+ Assert.assertNotNull( feed );
+
+ // printFeed( "Feed values", " ", feed );
+ // RFC 4287 requires non-null id, title, updated elements
+ Assert.assertNotNull( feed.getId() );
+ Assert.assertNotNull( feed.getTitle() );
+ Assert.assertNotNull( feed.getUpdated() );
+
+ eTag = res.getHeader("ETag");
+ Assert.assertNotNull( eTag );
+ lastModified = res.getLastModified();
+ Assert.assertNotNull( lastModified );
+
+ numberEntries = getEntryCount( feed );
+ System.out.println( "FeedAggregatorTest.testFeedBasics number entries=" + numberEntries );
+
+ // printFeed( "Aggregated Feed Contents:", " ", feed );
+ // System.out.println( "FeedAggregatorTest.testFeedBasics feed=" + feed );
+ // printResponseHeaders( "Aggregated Feed response headers:", " ", res );
+ // System.out.println("Aggregated Feed response body:");
+ // prettyPrint(abdera, res.getDocument());
+ // printEntryUpdates( "Aggregated Feed feed updates", " ", feed );
+ } finally {
+ res.release();
+ }
+ }
+
+ @Test
+ public void testUnmodifiedGetIfModified() throws Exception {
+ System.out.println(">>>FeedAggregatorTest.testFeedUnmodifiedGetIfModified");
+ // Feed request with predicates
+ RequestOptions opts = new RequestOptions();
+ final String contentType = "application/atom+xml";
+ opts.setContentType(contentType);
+ opts.setHeader( "If-Modified-Since", dateFormat.format( new Date( 0 ) ));
+
+ ClientResponse res = client.get(providerURI, opts);
+ Assert.assertNotNull(res);
+ try {
+ // Should return 200 - Feed provided since feed is changed.
+ Assert.assertEquals(200, res.getStatus());
+ Assert.assertEquals(ResponseType.SUCCESS, res.getType());
+
+ String thisETag = res.getHeader("ETag");
+ Assert.assertNotNull( thisETag );
+ Date thisLastModified = res.getLastModified();
+ Assert.assertNotNull( thisLastModified );
+
+ // Entry count and body size should be equal to basic request
+ long thisContentLength = getContentLength( res );
+
+ Document<Feed> doc = res.getDocument();
+ Assert.assertNotNull( doc );
+ Feed feed = doc.getRoot();
+ Assert.assertNotNull( feed );
+ int thisNumberEntries = getEntryCount( feed );
+ // System.out.println( "FeedAggregatorTest.UnmodifiedGetIfModified number entries=" + numberEntries + ", this number entries=" + thisNumberEntries ) ;
+ } finally {
+ res.release();
+ }
+ }
+
+ @Test
+ public void testUnmodifiedGetIfUnModified() throws Exception {
+ System.out.println(">>>FeedAggregatorTest.testFeedUnmodifiedGetIfUnModified");
+ // Feed request with predicates
+ RequestOptions opts = new RequestOptions();
+ final String contentType = "application/atom+xml";
+ opts.setContentType(contentType);
+ opts.setHeader( "If-Unmodified-Since", dateFormat.format( new Date( 0 ) ));
+
+ ClientResponse res = client.get(providerURI, opts);
+ Assert.assertNotNull(res);
+ try {
+ // Should return 304 - Feed not provided since feed is modified since.
+ Assert.assertEquals(304, res.getStatus());
+
+ // Entry count and body size should be equal to basic request
+ long thisContentLength = getContentLength( res );
+ System.out.println( "FeedAggregatorTest.UnModifiedGetIfUnModified saved " + (contentLength - thisContentLength) + " bytes of network traffic due to caching.");
+ } finally {
+ res.release();
+ }
+ }
+
+ /** Print feed vital fields. */
+ public static void printFeed( String title, String indent, Feed feed ) {
+ if ( feed == null ) {
+ System.out.println( title + " feed is null");
+ return;
+ }
+
+ System.out.println( title );
+ System.out.println( indent + "id=" + feed.getId() );
+ System.out.println( indent + "title=" + feed.getTitle() );
+ System.out.println( indent + "updated=" + feed.getUpdated() );
+ System.out.println( indent + "author=" + feed.getAuthor() );
+ System.out.println( indent + "self link=" + feed.getSelfLink() );
+ Collection collection = feed.getCollection();
+ if ( collection == null ) {
+ System.out.println( indent + "collection=null" );
+ } else {
+ System.out.println( indent + "collection=" + collection );
+ }
+ }
+
+ /* Print headers of request. */
+ public static void printRequestHeaders( String title, String indent, RequestOptions request ) {
+ System.out.println( title );
+ if ( request == null ) {
+ System.out.println( indent + " request is null");
+ return;
+ }
+ String [] headerNames = request.getHeaderNames();
+ for ( String headerName: headerNames) {
+ String header = request.getHeader(headerName);
+ System.out.println( indent + " header name,value=" + headerName + "," + header );
+ }
+ }
+
+ /* Print headers of response. */
+ public static void printResponseHeaders( String title, String indent, ClientResponse response ) {
+ System.out.println( title );
+ if ( response == null ) {
+ System.out.println( indent + " response is null");
+ return;
+ }
+ String [] headerNames = response.getHeaderNames();
+ for ( String headerName: headerNames) {
+ String header = response.getHeader(headerName);
+ System.out.println( indent + " header name,value=" + headerName + "," + header );
+ }
+
+ }
+
+ /** Pretty print the document body. */
+ public static void prettyPrint(Abdera abdera, Base doc) throws IOException {
+ WriterFactory factory = abdera.getWriterFactory();
+ Writer writer = factory.getWriter("prettyxml");
+ writer.writeTo(doc, System.out);
+ System.out.println();
+ }
+
+ /** Print the updated elements of the feed entries. */
+ public static void printEntryUpdates( String title, String indent, Feed feed ) {
+ if ( feed == null ) {
+ System.out.println( title + " feed is null");
+ return;
+ }
+
+ System.out.println( title );
+ List<Entry> entries = feed.getEntries();
+ if ( entries == null ) {
+ System.out.println( indent + " null entries");
+ }
+ System.out.println( indent + "entries size=" + entries.size());
+
+ int i = 0;
+ for ( Entry entry: entries ) {
+ String entryTitle = entry.getTitle();
+ if (( entryTitle != null ) && ( entryTitle.length() > 20 ))
+ entryTitle = entryTitle.substring( 0, 20 );
+ // System.out.println( indent + i++ + ": title=\"" + entryTitle +
+ // "\", updated=" + entry.getUpdated() + ", published=" + entry.getPublished() );
+ System.out.println( indent + i++ + ": title=\"" + entryTitle +
+ "\", updated=" + entry.getUpdated() );
+ }
+ }
+
+ /** Get the length of the response body content. */
+ public static long getContentLength( ClientResponse response ) {
+ // getContentLenght returns -1
+ // contentLength = response.getContentLength();
+ try {
+ Reader reader = response.getReader();
+ long actualSkip = reader.skip( Long.MAX_VALUE );
+ return actualSkip;
+ } catch ( IOException e ) {
+ }
+ return -1L;
+ }
+
+ /** Get a count of entries in the feed. */
+ public static int getEntryCount( Feed feed ) {
+ if ( feed == null ) {
+ return 0;
+ }
+
+ List<Entry> entries = feed.getEntries();
+ if ( entries == null ) {
+ return 0;
+ }
+ return entries.size();
+ }
+
+ /** Given a feed, determine the median point of the entries.
+ * Use the updated field of the entries to determine median.
+ * @param feed
+ * @return
+ */
+ public static Date getUpdatedMedian( Feed feed ) {
+ Date sentinal = null;
+ if ( feed == null ) {
+ return sentinal;
+ }
+
+ List<Entry> entries = feed.getEntries();
+ if ( entries == null ) {
+ return sentinal;
+ }
+ int size = entries.size();
+ if( size == 0 ) {
+ return sentinal;
+ }
+ // System.out.println( "getUpdatedMedian entries size=" + entries.size());
+ ArrayList<Date> updates = new ArrayList<Date>( size );
+
+ for ( Entry entry: entries ) {
+ Date entryUpdated = entry.getUpdated();
+ if ( entryUpdated == null ) {
+ entryUpdated = new Date( 0 );
+ }
+ updates.add( entryUpdated );
+ }
+ Collections.sort( updates );
+ // System.out.println( "getUpdatedMedian entry min update=" + updates.get( 0 ));
+ // System.out.println( "getUpdatedMedian entry max update=" + updates.get( size - 1 ));
+ Date median = updates.get( size/2 );
+ // System.out.println( "getUpdatedMedian entry max median=" + median );
+ return median;
+ }
+}
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