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Diffstat (limited to 'branches/sca-java-integration/sca/kernel/spi/src/main/java/org/apache/tuscany/spi/services/discovery/DiscoveryService.java')
-rw-r--r-- | branches/sca-java-integration/sca/kernel/spi/src/main/java/org/apache/tuscany/spi/services/discovery/DiscoveryService.java | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/branches/sca-java-integration/sca/kernel/spi/src/main/java/org/apache/tuscany/spi/services/discovery/DiscoveryService.java b/branches/sca-java-integration/sca/kernel/spi/src/main/java/org/apache/tuscany/spi/services/discovery/DiscoveryService.java new file mode 100644 index 0000000000..5c0a518323 --- /dev/null +++ b/branches/sca-java-integration/sca/kernel/spi/src/main/java/org/apache/tuscany/spi/services/discovery/DiscoveryService.java @@ -0,0 +1,75 @@ +/* + * 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.spi.services.discovery; + +import javax.xml.namespace.QName; +import javax.xml.stream.XMLStreamReader; + +/** + * Defines the abstraction that allows runtimes participating + * in the domain to discover each other and broadcast liveness + * to the admin server that holds the domain's runtime physical + * model and the domain-wide assembly model.. + * + * @version $Revision$ $Date$ + * + */ +public interface DiscoveryService { + + /** + * Sends a message to the specified runtime. The method returns a unique + * message id for the sent message. The consumers can use the message id for + * correlating responses to sent messages. + * + * @param runtimeId Runtime id of recipient. + * @param content Message content. + * @return The message id. + * @throws DiscoveryException In case of discovery errors. + */ + int sendMessage(String runtimeId, XMLStreamReader content) throws DiscoveryException; + + /** + * Broadcasts the messages to all runtimes in the domain. + * + * @param content Message content. + * @return The message id. + * @throws DiscoveryException In case of discovery errors. + */ + int broadcastMessage(XMLStreamReader content) throws DiscoveryException; + + /** + * Registers a request listener for async messages. Request listeners handle + * unslolicited async messages sent by recipients. + * + * @param messageType Message type that can be handled by the listener. + * @param listener Recipient of the async message. + */ + void registerRequestListener(QName messageType, RequestListener listener); + + /** + * Registers a response listener for async messages. Response listeners handle + * async meesages that are received in response to a request message that was + * originally sent. + * + * @param messageType Message type that can be handled by the listener. + * @param listener Recipient of the async message. + */ + void registerResponseListener(QName messageType, ResponseListener listener); + +} |