diff options
Diffstat (limited to 'sca-java-1.x/tags/1.5/modules/implementation-notification/src/main/java/org/apache/tuscany/sca/implementation/notification/NotificationComponentInvoker.java')
-rw-r--r-- | sca-java-1.x/tags/1.5/modules/implementation-notification/src/main/java/org/apache/tuscany/sca/implementation/notification/NotificationComponentInvoker.java | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.5/modules/implementation-notification/src/main/java/org/apache/tuscany/sca/implementation/notification/NotificationComponentInvoker.java b/sca-java-1.x/tags/1.5/modules/implementation-notification/src/main/java/org/apache/tuscany/sca/implementation/notification/NotificationComponentInvoker.java new file mode 100644 index 0000000000..a2e35c5cb6 --- /dev/null +++ b/sca-java-1.x/tags/1.5/modules/implementation-notification/src/main/java/org/apache/tuscany/sca/implementation/notification/NotificationComponentInvoker.java @@ -0,0 +1,112 @@ +/*
+ * 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.implementation.notification;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.tuscany.sca.assembly.ComponentReference;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.InvocationChain;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.runtime.RuntimeComponent;
+import org.apache.tuscany.sca.runtime.RuntimeComponentReference;
+import org.apache.tuscany.sca.runtime.RuntimeWire;
+
+/**
+ * Turns invoke into remote message fan-out
+ *
+ * @version $Rev$ $Date$
+ */
+public class NotificationComponentInvoker implements Invoker {
+
+ private static final Message RESPONSE = new ImmutableMessage();
+ private List<InvocationChain> subscriberInvocationChains;
+ private Operation operation;
+ private RuntimeComponent component;
+
+ public NotificationComponentInvoker(Operation operation, RuntimeComponent component) {
+ this.subscriberInvocationChains = null;
+ this.operation = operation;
+ this.component = component;
+ }
+
+ public Message invoke(Message msg) {
+ addSubscriberInvocationChains();
+
+ // REVIEW Should this be done in separate thread(s)?
+ // REVIEW Should separate copies of message be used?
+ Object msgBody = msg.getBody();
+
+ for (InvocationChain subscriberInvocationChain : subscriberInvocationChains) {
+ Invoker chainInvoker = subscriberInvocationChain.getHeadInvoker();
+ msg.setBody(msgBody);
+ chainInvoker.invoke(msg);
+ }
+
+ return RESPONSE;
+ }
+
+ private void addSubscriberInvocationChains() {
+ if (subscriberInvocationChains == null) {
+ subscriberInvocationChains = new ArrayList<InvocationChain>();
+ for (ComponentReference reference : component.getReferences()) {
+ if (reference.getName().indexOf("$self$") >= 0) {
+ continue;
+ }
+ RuntimeComponentReference rtCompRef = null;
+ if (reference instanceof RuntimeComponentReference) {
+ rtCompRef = (RuntimeComponentReference)reference;
+ }
+ else {
+ throw new RuntimeException("Need a runtime component reference");
+ }
+ for(RuntimeWire wire : rtCompRef.getRuntimeWires()) {
+ // This is much less efficient now !!
+ List<InvocationChain> chains = wire.getInvocationChains();
+ InvocationChain chain = getInvocationChain(chains, operation);
+ subscriberInvocationChains.add(chain);
+ }
+ }
+ }
+ }
+
+ private InvocationChain getInvocationChain(List<InvocationChain> chains, Operation operation) {
+ InvocationChain chain = null;
+ for (InvocationChain ch : chains) {
+ if (ch.getTargetOperation().equals(operation)) {
+ chain = ch;
+ break;
+ }
+ }
+ if (chain == null) {
+ for (InvocationChain ch : chains) {
+ if (ch.getTargetOperation().getName().equals(operation.getName())) {
+ chain = ch;
+ break;
+ }
+ }
+ if (chain == null) {
+ throw new RuntimeException("Can't find a compatible chain");
+ }
+ }
+ return chain;
+ }
+}
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