| /* |
| * 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.vysper.xmpp.protocol.worker; |
| |
| import static java.util.Objects.requireNonNull; |
| |
| import org.apache.vysper.xmpp.protocol.ProtocolException; |
| import org.apache.vysper.xmpp.protocol.ResponseWriter; |
| import org.apache.vysper.xmpp.protocol.SessionStateHolder; |
| import org.apache.vysper.xmpp.protocol.StanzaHandler; |
| import org.apache.vysper.xmpp.protocol.StanzaHandlerExecutorFactory; |
| import org.apache.vysper.xmpp.protocol.StateAwareProtocolWorker; |
| import org.apache.vysper.xmpp.server.SessionContext; |
| import org.apache.vysper.xmpp.server.SessionState; |
| import org.apache.vysper.xmpp.stanza.Stanza; |
| |
| /** |
| * high-level xmpp protocol logic, state-aware. writes response stanzas |
| * |
| * @author The Apache MINA Project (dev@mina.apache.org) |
| */ |
| public abstract class AbstractStateAwareProtocolWorker implements StateAwareProtocolWorker { |
| |
| private final StanzaHandlerExecutorFactory stanzaHandlerExecutorFactory; |
| |
| protected AbstractStateAwareProtocolWorker(StanzaHandlerExecutorFactory stanzaHandlerExecutorFactory) { |
| this.stanzaHandlerExecutorFactory = requireNonNull(stanzaHandlerExecutorFactory); |
| } |
| |
| abstract public SessionState getHandledState(); |
| |
| public void processStanza(SessionContext sessionContext, SessionStateHolder sessionStateHolder, Stanza stanza, |
| StanzaHandler stanzaHandler) { |
| boolean proceed = checkState(sessionContext, sessionStateHolder, stanza, stanzaHandler); |
| if (!proceed) |
| return; // TODO close stream? |
| |
| executeHandler(sessionContext, sessionStateHolder, stanza, stanzaHandler); |
| } |
| |
| protected boolean checkState(SessionContext sessionContext, SessionStateHolder sessionStateHolder, Stanza stanza, |
| StanzaHandler stanzaHandler) { |
| return 0 == getHandledState().compareTo(sessionContext.getState()); |
| } |
| |
| private void executeHandler(SessionContext sessionContext, SessionStateHolder sessionStateHolder, Stanza stanza, |
| StanzaHandler stanzaHandler) { |
| try { |
| stanzaHandlerExecutorFactory.build(stanzaHandler).execute(stanza, sessionContext.getServerRuntimeContext(), |
| isProcessingOutboundStanzas(), sessionContext, sessionStateHolder); |
| } catch (ProtocolException e) { |
| ResponseWriter.handleProtocolError(e, sessionContext, stanza); |
| } |
| } |
| |
| protected boolean isProcessingOutboundStanzas() { |
| return true; |
| } |
| } |