diff options
author | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2010-10-18 02:24:55 +0000 |
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committer | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2010-10-18 02:24:55 +0000 |
commit | 4f9328953ea16c7a42eb1910f1e809bf1c537d3b (patch) | |
tree | 2f989a5045456d2057540563a483465a1d490dc0 /sca-java-2.x/tags/2.0-M5.1/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPInvoker.java | |
parent | 41c3e83fe3990eff86b40f775c5d02c5177ae005 (diff) |
Copy 2.0-M5.1-RC2 tag as 2.0-M5.1 official release tag
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1023626 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to '')
-rw-r--r-- | sca-java-2.x/tags/2.0-M5.1/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPInvoker.java | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0-M5.1/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPInvoker.java b/sca-java-2.x/tags/2.0-M5.1/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPInvoker.java new file mode 100644 index 0000000000..a5d0c3a8da --- /dev/null +++ b/sca-java-2.x/tags/2.0-M5.1/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPInvoker.java @@ -0,0 +1,161 @@ +/*
+ * 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.tuscany.sca.binding.jsonp.runtime;
+
+import java.io.BufferedReader;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+
+import org.apache.commons.codec.EncoderException;
+import org.apache.commons.codec.net.URLCodec;
+import org.apache.http.HttpEntity;
+import org.apache.http.HttpResponse;
+import org.apache.http.client.HttpClient;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.impl.client.DefaultHttpClient;
+import org.apache.tuscany.sca.assembly.EndpointReference;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.Message;
+import org.codehaus.jackson.JsonGenerationException;
+import org.codehaus.jackson.JsonParseException;
+import org.codehaus.jackson.map.JsonMappingException;
+import org.codehaus.jackson.map.ObjectMapper;
+
+public class JSONPInvoker implements Invoker {
+
+ protected Operation operation;
+ protected EndpointReference endpoint;
+
+ protected ObjectMapper mapper; // TODO: share mapper btw invoker and servlet or move to databinding
+
+ public JSONPInvoker(Operation operation, EndpointReference endpoint) {
+ this.operation = operation;
+ this.endpoint = endpoint;
+ this.mapper = new ObjectMapper();
+ }
+
+ public Message invoke(Message msg) {
+ try {
+
+ return doInvoke(msg);
+
+ } catch (Exception e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ public Message doInvoke(Message msg) throws JsonGenerationException, JsonMappingException, IOException, EncoderException {
+ String uri = endpoint.getBinding().getURI() + "/" + operation.getName();
+ String[] jsonArgs = objectsToJSON((Object[])msg.getBody());
+
+ String responseJSON = invokeHTTPRequest(uri, jsonArgs);
+
+ Object response = jsonToObjects(responseJSON)[0];
+ msg.setBody(response);
+
+ return msg;
+ }
+
+ protected String invokeHTTPRequest(String url, String[] jsonArgs) throws IOException, EncoderException {
+
+ HttpClient httpclient = new DefaultHttpClient();
+
+
+ URLCodec uc = new URLCodec();
+ for (int i=0 ; i<jsonArgs.length; i++) {
+ if (i == 0) {
+ url += '?';
+ } else {
+ url += '&';
+ }
+ url += "arg" + i + "=";
+ url += uc.encode(jsonArgs[i]);
+ }
+
+ HttpGet httpget = new HttpGet(url);
+
+ HttpResponse response = httpclient.execute(httpget);
+
+ StringBuffer responseJSON = new StringBuffer();
+
+ HttpEntity entity = response.getEntity();
+
+ // If the response does not enclose an entity, there is no need
+ // to worry about connection release
+ if (entity != null) {
+ InputStream instream = entity.getContent();
+ try {
+
+ BufferedReader reader = new BufferedReader(new InputStreamReader(instream));
+ String s = null;
+ while ((s = reader.readLine()) != null) {
+ responseJSON.append(s);
+ }
+
+ } catch (IOException ex) {
+
+ // In case of an IOException the connection will be released
+ // back to the connection manager automatically
+ throw ex;
+
+ } catch (RuntimeException ex) {
+
+ // In case of an unexpected exception you may want to abort
+ // the HTTP request in order to shut down the underlying
+ // connection and release it back to the connection manager.
+ httpget.abort();
+ throw ex;
+
+ } finally {
+
+ // Closing the input stream will trigger connection release
+ instream.close();
+
+ }
+
+ // When HttpClient instance is no longer needed,
+ // shut down the connection manager to ensure
+ // immediate deallocation of all system resources
+ httpclient.getConnectionManager().shutdown();
+ }
+
+ return responseJSON.toString();
+ }
+
+ protected String[] objectsToJSON(Object[] msgArgs) throws JsonGenerationException, JsonMappingException, IOException {
+ String[] jsonArgs = new String[msgArgs.length];
+ for (int i=0; i<msgArgs.length; i++) {
+ ByteArrayOutputStream os = new ByteArrayOutputStream();
+ mapper.writeValue(os , msgArgs[i]);
+ jsonArgs[i] = os.toString();
+ }
+ return jsonArgs;
+ }
+
+ protected Object[] jsonToObjects(String jsonRequest) throws JsonParseException, JsonMappingException, IOException {
+ Class<?> c = new Object[0].getClass();
+ Object[] args = (Object[])mapper.readValue("[" + jsonRequest +"]", c);
+ return args;
+ }
+
+}
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