diff options
author | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2009-11-11 23:26:33 +0000 |
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committer | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2009-11-11 23:26:33 +0000 |
commit | a40e527938d76ba71f211da7e327adb50384ba69 (patch) | |
tree | cb8f99f1727122b040a3f0fbb6649292b6a74302 /sca-java-1.x/tags/1.2/modules/binding-notification/src/main/java/org/apache/tuscany/sca/binding/notification/NotificationServiceBindingProvider.java | |
parent | 968721109881107520d7aefa91d7fcc0519d7739 (diff) |
Moving 1.x tags
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@835157 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'sca-java-1.x/tags/1.2/modules/binding-notification/src/main/java/org/apache/tuscany/sca/binding/notification/NotificationServiceBindingProvider.java')
-rw-r--r-- | sca-java-1.x/tags/1.2/modules/binding-notification/src/main/java/org/apache/tuscany/sca/binding/notification/NotificationServiceBindingProvider.java | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.2/modules/binding-notification/src/main/java/org/apache/tuscany/sca/binding/notification/NotificationServiceBindingProvider.java b/sca-java-1.x/tags/1.2/modules/binding-notification/src/main/java/org/apache/tuscany/sca/binding/notification/NotificationServiceBindingProvider.java new file mode 100644 index 0000000000..7748fdffe9 --- /dev/null +++ b/sca-java-1.x/tags/1.2/modules/binding-notification/src/main/java/org/apache/tuscany/sca/binding/notification/NotificationServiceBindingProvider.java @@ -0,0 +1,321 @@ +/* + * 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.notification; + +import java.io.ByteArrayInputStream; +import java.io.IOException; +import java.io.OutputStream; +import java.net.URI; +import java.net.URL; +import java.util.ArrayList; +import java.util.List; +import java.util.Map; + +import javax.servlet.ServletInputStream; +import javax.servlet.ServletOutputStream; + +import org.apache.axiom.om.OMElement; +import org.apache.axiom.om.impl.builder.StAXOMBuilder; +import org.apache.tuscany.sca.binding.notification.encoding.BrokerConsumerReference; +import org.apache.tuscany.sca.binding.notification.encoding.BrokerID; +import org.apache.tuscany.sca.binding.notification.encoding.ConnectionOverride; +import org.apache.tuscany.sca.binding.notification.encoding.Constants; +import org.apache.tuscany.sca.binding.notification.encoding.ConsumerReference; +import org.apache.tuscany.sca.binding.notification.encoding.EncodingRegistry; +import org.apache.tuscany.sca.binding.notification.encoding.EncodingUtils; +import org.apache.tuscany.sca.binding.notification.encoding.EndpointAddress; +import org.apache.tuscany.sca.binding.notification.encoding.EndpointReference; +import org.apache.tuscany.sca.binding.notification.encoding.ReferenceProperties; +import org.apache.tuscany.sca.binding.notification.encoding.Subscribe; +import org.apache.tuscany.sca.binding.notification.util.IOUtils; +import org.apache.tuscany.sca.binding.notification.util.NotificationServlet; +import org.apache.tuscany.sca.binding.notification.util.URIUtil; +import org.apache.tuscany.sca.binding.notification.util.IOUtils.IOUtilsException; +import org.apache.tuscany.sca.binding.notification.util.IOUtils.Writeable; +import org.apache.tuscany.sca.binding.notification.util.NotificationServlet.NotificationServletStreamHandler; +import org.apache.tuscany.sca.core.invocation.MessageImpl; +import org.apache.tuscany.sca.host.http.ServletHost; +import org.apache.tuscany.sca.interfacedef.Interface; +import org.apache.tuscany.sca.interfacedef.InterfaceContract; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.invocation.InvocationChain; +import org.apache.tuscany.sca.invocation.Message; +import org.apache.tuscany.sca.provider.ServiceBindingProvider; +import org.apache.tuscany.sca.runtime.RuntimeComponent; +import org.apache.tuscany.sca.runtime.RuntimeComponentService; +import org.apache.tuscany.sca.runtime.RuntimeWire; + +/** + * The runtime representaion of the local service binding + * + * @version $Rev$ $Date$ + */ +public class NotificationServiceBindingProvider + implements ServiceBindingProvider, NotificationServletStreamHandler { + + private RuntimeWire wire; + private NotificationBinding notificationBinding; + private RuntimeComponentService service; + private ServletHost servletHost; + private NotificationTypeManager ntm; + private EncodingRegistry encodingRegistry; + private URI notificationType; + private URL myUrl; + private URL remoteNtmUrl; + private static final String consumerPathBase = "/consumer"; + private boolean started; + private NotificationBrokerManager brokerManager; + private String brokerID; + + public NotificationServiceBindingProvider(NotificationBinding notificationBinding, + RuntimeComponent component, + RuntimeComponentService service, + ServletHost servletHost, + NotificationTypeManager ntm, + EncodingRegistry encodingRegistry, + String httpUrl, + NotificationBrokerManager brokerManager) { + this.notificationBinding = notificationBinding; + this.service = service; + this.servletHost = servletHost; + this.ntm = ntm; + this.encodingRegistry = encodingRegistry; + this.notificationType = notificationBinding.getNotificationType(); + String ntmAddress = notificationBinding.getNtmAddress(); + String notificationTypePath = URIUtil.getPath(notificationType); + try { + this.myUrl = new URL(httpUrl + consumerPathBase + notificationTypePath); + remoteNtmUrl = null; + if (ntmAddress != null && notificationType != null) { + remoteNtmUrl = new URL(ntmAddress + notificationTypePath); + } + } + catch(Exception e) { + throw new RuntimeException(e); + } + this.started = false; + this.brokerManager = brokerManager; + this.brokerID = null; + + URI uri = URI.create(component.getURI() + "/" + notificationBinding.getName()); + notificationBinding.setURI(uri.toString()); + Interface interfaze = service.getInterfaceContract().getInterface(); + interfaze.resetDataBinding(OMElement.class.getName()); + for (Operation operation : interfaze.getOperations()) { + operation.setNonBlocking(false); + } + } + + public NotificationBinding getBinding() { + return notificationBinding; + } + + public boolean isStarted() { + return started; + } + + public URL getURL() { + return myUrl; + } + + public InterfaceContract getBindingInterfaceContract() { + return service.getInterfaceContract(); + } + + public boolean supportsOneWayInvocation() { + return false; + } + + public void start() { + if (started) { + return; + } + + RuntimeComponentService componentService = (RuntimeComponentService) service; + wire = componentService.getRuntimeWire(notificationBinding); + + for (InvocationChain ch : wire.getInvocationChains()) { + ch.setAllowsPassByReference(true); + } + + brokerManager.serviceProviderStarted(notificationType, this, remoteNtmUrl); + started = true; + } + + public void stop() { + } + + public void deployConsumer() { + WriteableSubscribe ws = new WriteableSubscribe(myUrl, null); + List<URL> producerList = new ArrayList<URL>(); + String sequenceType = ntm.newConsumer(notificationType, myUrl, remoteNtmUrl, producerList); + if (Constants.EndProducers.equals(sequenceType)) { + for (URL producerUrl : producerList) { + subscribeWithProducer(producerUrl, null, ws); + } + } + else if (Constants.BrokerProducers.equals(sequenceType)) { + // Pick a broker producer, for now the first one + URL producerUrl = producerList.get(0); + subscribeWithProducer(producerUrl, null, ws); + } + + servletHost.addServletMapping(myUrl.toString(), new NotificationServlet(this)); + } + + protected void subscribeWithProducer(URL producerUrl, String brokerID, WriteableSubscribe ws) { + if (ws == null) { + ws = new WriteableSubscribe(myUrl, brokerID); + } + try { + IOUtils.sendHttpRequest(producerUrl, Constants.SUBSCRIBE_OP, ws, null); + } catch(Exception e) { + throw new RuntimeException(e); + } + } + + public void deployBroker(String brokerID, EndpointReference brokerProducerEPR, List<EndpointReference> producerList) { + if (brokerProducerEPR != null) { + subscribeWithProducer(brokerProducerEPR.getEndpointAddress().getAddress(), brokerID, null); + } + this.brokerID = brokerID; + if (producerList != null && !producerList.isEmpty()) { + WriteableConnectionOverride wco = new WriteableConnectionOverride(myUrl, brokerID); + for (EndpointReference producerEPR : producerList) { + try { + IOUtils.sendHttpRequest(producerEPR.getEndpointAddress().getAddress(), Constants.CONNECTION_OVERRIDE_OP, wco, null); + } catch(Exception e) { + throw new RuntimeException(e); + } + } + } + servletHost.addServletMapping(myUrl.toString(), new NotificationServlet(this)); + } + + public void replaceBrokerConnection(EndpointReference chosenBrokerProducerEpr) { + if (brokerID == null) { + throw new RuntimeException("Missing broker id"); + } + URL producerUrl = chosenBrokerProducerEpr.getEndpointAddress().getAddress(); + subscribeWithProducer(producerUrl, brokerID, null); + } + + public void handle(Map<String, String> headers, ServletInputStream istream, int contentLength, ServletOutputStream ostream) { + String opHeader = headers.get(IOUtils.Notification_Operation); + String incomingBrokerID = headers.get(Constants.Broker_ID); + if (opHeader == null) { + throw new RuntimeException("Missing operation header"); + } + if (wire == null) { + throw new RuntimeException("Missing wire"); + } + InvocationChain chain = null; + for (InvocationChain ch : wire.getInvocationChains()) { + // We may want to use more than just the op name + if(ch.getTargetOperation().getName().equals(opHeader)) { + chain = ch; + break; + } + } + if (chain == null) { + throw new RuntimeException("Can't find invocation chain match for [" + opHeader + "]"); + } + byte[] payload = null; + try { + payload = IOUtils.readFully(istream, contentLength); + } + catch(IOException e) { + throw new RuntimeException(e); + } + Object[] args = getArgsFromByteArray(payload, incomingBrokerID); + + invoke(chain, args); + + // Doing nothing to ostream is equivalent to returning null + } + + private Object[] getArgsFromByteArray(byte[] payload, String incomingBrokerID) { + try { + StAXOMBuilder builder = new StAXOMBuilder(new ByteArrayInputStream(payload)); + OMElement element = builder.getDocumentElement(); + return new Object[] { element }; + } + catch(Exception e) { + throw new RuntimeException(e); + } + } + + protected void invoke(InvocationChain chain, Object[] args) { + Message msg = new MessageImpl(); + msg.setBody(args); + chain.getHeadInvoker().invoke(msg); + } + + class WriteableSubscribe implements Writeable { + + private Subscribe sub; + + public WriteableSubscribe(URL url, String brokerID) { + EndpointAddress epa = new EndpointAddress(); + epa.setAddress(url); + EndpointReference epr = new EndpointReference(); + epr.setEndpointAddress(epa); + if (brokerID != null) { + BrokerID cbi = new BrokerID(); + cbi.setID(brokerID); + ReferenceProperties crp = new ReferenceProperties(); + crp.addProperty(cbi); + epr.setReferenceProperties(crp); + } + ConsumerReference cr = new ConsumerReference(); + cr.setReference(epr); + sub = new Subscribe(); + sub.setConsumerReference(cr); + } + + public void write(OutputStream os) throws IOUtilsException { + EncodingUtils.encodeToStream(encodingRegistry, sub, os); + } + } + + class WriteableConnectionOverride implements Writeable { + + private ConnectionOverride connectionOverride; + + public WriteableConnectionOverride(URL brokerConsumerUrl, String brokerID) { + EndpointAddress epa = new EndpointAddress(); + epa.setAddress(brokerConsumerUrl); + EndpointReference brokerConsumerEPR = new EndpointReference(); + brokerConsumerEPR.setEndpointAddress(epa); + BrokerID cbi = new BrokerID(); + cbi.setID(brokerID); + ReferenceProperties crp = new ReferenceProperties(); + crp.addProperty(cbi); + brokerConsumerEPR.setReferenceProperties(crp); + BrokerConsumerReference brokerConsumerReference = new BrokerConsumerReference(); + brokerConsumerReference.setReference(brokerConsumerEPR); + connectionOverride = new ConnectionOverride(); + connectionOverride.setBrokerConsumerReference(brokerConsumerReference); + } + + public void write(OutputStream os) throws IOUtilsException { + EncodingUtils.encodeToStream(encodingRegistry, connectionOverride, os); + } + } +} |