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Diffstat (limited to 'src/java/nginx/unit/websocket/pojo/PojoMessageHandlerWholeBase.java')
-rw-r--r-- | src/java/nginx/unit/websocket/pojo/PojoMessageHandlerWholeBase.java | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/src/java/nginx/unit/websocket/pojo/PojoMessageHandlerWholeBase.java b/src/java/nginx/unit/websocket/pojo/PojoMessageHandlerWholeBase.java new file mode 100644 index 00000000..23333eb7 --- /dev/null +++ b/src/java/nginx/unit/websocket/pojo/PojoMessageHandlerWholeBase.java @@ -0,0 +1,94 @@ +/* + * 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 nginx.unit.websocket.pojo; + +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; + +import javax.websocket.DecodeException; +import javax.websocket.MessageHandler; +import javax.websocket.Session; + +import nginx.unit.websocket.WsSession; + +/** + * Common implementation code for the POJO whole message handlers. All the real + * work is done in this class and in the superclass. + * + * @param <T> The type of message to handle + */ +public abstract class PojoMessageHandlerWholeBase<T> + extends PojoMessageHandlerBase<T> implements MessageHandler.Whole<T> { + + public PojoMessageHandlerWholeBase(Object pojo, Method method, + Session session, Object[] params, int indexPayload, + boolean convert, int indexSession, long maxMessageSize) { + super(pojo, method, session, params, indexPayload, convert, + indexSession, maxMessageSize); + } + + + @Override + public final void onMessage(T message) { + + if (params.length == 1 && params[0] instanceof DecodeException) { + ((WsSession) session).getLocal().onError(session, + (DecodeException) params[0]); + return; + } + + // Can this message be decoded? + Object payload; + try { + payload = decode(message); + } catch (DecodeException de) { + ((WsSession) session).getLocal().onError(session, de); + return; + } + + if (payload == null) { + // Not decoded. Convert if required. + if (convert) { + payload = convert(message); + } else { + payload = message; + } + } + + Object[] parameters = params.clone(); + if (indexSession != -1) { + parameters[indexSession] = session; + } + parameters[indexPayload] = payload; + + Object result = null; + try { + result = method.invoke(pojo, parameters); + } catch (IllegalAccessException | InvocationTargetException e) { + handlePojoMethodException(e); + } + processResult(result); + } + + protected Object convert(T message) { + return message; + } + + + protected abstract Object decode(T message) throws DecodeException; + protected abstract void onClose(); +} |