diff options
author | dims <dims@13f79535-47bb-0310-9956-ffa450edef68> | 2008-06-17 00:23:01 +0000 |
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committer | dims <dims@13f79535-47bb-0310-9956-ffa450edef68> | 2008-06-17 00:23:01 +0000 |
commit | bdd0a41aed7edf21ec2a65cfa17a86af2ef8c48a (patch) | |
tree | 38a92061c0793434c4be189f1d70c3458b6bc41d /sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/wire/NonBlockingInterceptor.java |
Move Tuscany from Incubator to top level.
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@668359 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/wire/NonBlockingInterceptor.java')
-rw-r--r-- | sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/wire/NonBlockingInterceptor.java | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/wire/NonBlockingInterceptor.java b/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/wire/NonBlockingInterceptor.java new file mode 100644 index 0000000000..d4848cde71 --- /dev/null +++ b/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/wire/NonBlockingInterceptor.java @@ -0,0 +1,193 @@ +/* + * 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.core.wire; + +import java.net.URI; +import java.util.LinkedList; + +import org.osoa.sca.ServiceRuntimeException; + +import org.apache.tuscany.spi.component.WorkContext; +import org.apache.tuscany.spi.model.Scope; +import org.apache.tuscany.spi.services.work.WorkScheduler; +import org.apache.tuscany.spi.wire.Interceptor; +import org.apache.tuscany.spi.wire.Message; +import org.apache.tuscany.spi.wire.TargetInvoker; +import org.apache.tuscany.spi.wire.Wire; + +/** + * Adds non-blocking behavior to an invocation chain + * + * @version $$Rev$$ $$Date$$ + */ +public class NonBlockingInterceptor implements Interceptor { + + private static final Message RESPONSE = new ImmutableMessage(); + + private WorkScheduler workScheduler; + private WorkContext workContext; + private Interceptor next; + + public NonBlockingInterceptor(WorkScheduler workScheduler, WorkContext workContext) { + this.workScheduler = workScheduler; + this.workContext = workContext; + } + + public NonBlockingInterceptor(WorkScheduler workScheduler, WorkContext workContext, Interceptor next) { + this.workScheduler = workScheduler; + this.workContext = workContext; + this.next = next; + } + + public Message invoke(final Message msg) { + // Retrieve conversation id to transfer to new thread + // Notice that we cannot clear the conversation id from the current thread + final Object conversationID = workContext.getIdentifier(Scope.CONVERSATION); + // Schedule the invocation of the next interceptor in a new Work instance + try { + workScheduler.scheduleWork(new Runnable() { + public void run() { + workContext.setCorrelationId(null); + // if we got a conversation id, transfer it to new thread + if (conversationID != null) { + workContext.setIdentifier(Scope.CONVERSATION, conversationID); + } + next.invoke(msg); + } + }); + } catch (Exception e) { + throw new ServiceRuntimeException(e); + } + return RESPONSE; + } + + public Interceptor getNext() { + return next; + } + + public void setNext(Interceptor next) { + this.next = next; + } + + public boolean isOptimizable() { + return false; + } + + /** + * A dummy message passed back on an invocation + */ + private static class ImmutableMessage implements Message { + + public Object getBody() { + return null; + } + + public void setBody(Object body) { + if (body != null) { + throw new UnsupportedOperationException(); + } + } + + public WorkContext getWorkContext() { + throw new UnsupportedOperationException(); + } + + public void setWorkContext(WorkContext workContext) { + throw new UnsupportedOperationException(); + } + + public void setTargetInvoker(TargetInvoker invoker) { + throw new UnsupportedOperationException(); + } + + public TargetInvoker getTargetInvoker() { + return null; + } + + public Message getRelatedCallbackMessage() { + return null; + } + + public URI getFromAddress() { + return null; + } + + public void setFromAddress(URI fromAddress) { + throw new UnsupportedOperationException(); + } + + public void pushCallbackUri(URI fromAddress) { + throw new UnsupportedOperationException(); + } + + public LinkedList<URI> getCallbackUris() { + return null; + } + + public void setCallbackUris(LinkedList<URI> uris) { + throw new UnsupportedOperationException(); + } + + public void pushCallbackWire(Wire wire) { + + } + + public LinkedList<Wire> getCallbackWires() { + return null; + } + + public void setCallbackWires(LinkedList<Wire> wires) { + + } + + public Object getMessageId() { + return null; + } + + public void setMessageId(Object messageId) { + throw new UnsupportedOperationException(); + } + + public Object getCorrelationId() { + return null; + } + + public void setCorrelationId(Object correlationId) { + throw new UnsupportedOperationException(); + } + + public boolean isFault() { + return false; + } + + public void setBodyWithFault(Object fault) { + throw new UnsupportedOperationException(); + } + + public short getConversationSequence() { + return TargetInvoker.NONE; + } + + public void setConversationSequence(short sequence) { + + } + + } + +} |