| /** |
| * 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.cxf.throttling; |
| |
| import java.util.logging.Logger; |
| |
| import org.apache.cxf.common.logging.LogUtils; |
| import org.apache.cxf.continuations.Continuation; |
| import org.apache.cxf.continuations.ContinuationProvider; |
| import org.apache.cxf.endpoint.Endpoint; |
| import org.apache.cxf.interceptor.Fault; |
| import org.apache.cxf.interceptor.OutgoingChainInterceptor; |
| import org.apache.cxf.message.Message; |
| import org.apache.cxf.phase.AbstractPhaseInterceptor; |
| |
| /** |
| * |
| */ |
| public class ThrottlingInterceptor extends AbstractPhaseInterceptor<Message> { |
| private static final Logger LOG = LogUtils.getL7dLogger(ThrottlingInterceptor.class); |
| |
| final ThrottlingManager manager; |
| public ThrottlingInterceptor(String phase, ThrottlingManager manager) { |
| super(ThrottlingInterceptor.class.getName() + "-" + phase, phase); |
| this.manager = manager; |
| } |
| |
| @Override |
| public void handleMessage(Message message) throws Fault { |
| ThrottleResponse rsp = manager.getThrottleResponse(getPhase(), message); |
| if (rsp == null) { |
| return; |
| } |
| message.getExchange().put(ThrottleResponse.class, rsp); |
| if (rsp.getResponseCode() >= 300) { |
| createOutMessage(message); |
| message.getInterceptorChain().doInterceptStartingAt(message, |
| OutgoingChainInterceptor.class.getName()); |
| return; |
| } |
| |
| long l = rsp.getDelay(); |
| if (l > 0) { |
| ContinuationProvider cp = message.get(ContinuationProvider.class); |
| if (cp == null) { |
| LOG.warning("No ContinuationProvider available, sleeping on current thread"); |
| try { |
| Thread.sleep(l); |
| } catch (InterruptedException e) { |
| //ignore |
| } |
| return; |
| } |
| Continuation c = cp.getContinuation(); |
| c.suspend(l); |
| } |
| } |
| private Message createOutMessage(Message inMessage) { |
| Endpoint e = inMessage.getExchange().getEndpoint(); |
| Message mout = e.getBinding().createMessage(); |
| mout.setExchange(inMessage.getExchange()); |
| mout.setInterceptorChain( |
| OutgoingChainInterceptor.getOutInterceptorChain(inMessage.getExchange())); |
| inMessage.getExchange().setOutMessage(mout); |
| inMessage.getExchange().put("cxf.io.cacheinput", Boolean.FALSE); |
| return mout; |
| } |
| } |