| /* |
| * ==================================================================== |
| * 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. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| */ |
| |
| package org.apache.hc.client5.http.impl.classic; |
| |
| import java.io.IOException; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.TimeoutException; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| import org.apache.hc.client5.http.HttpRoute; |
| import org.apache.hc.client5.http.classic.ExecRuntime; |
| import org.apache.hc.client5.http.config.RequestConfig; |
| import org.apache.hc.client5.http.impl.ConnPoolSupport; |
| import org.apache.hc.client5.http.io.ConnectionEndpoint; |
| import org.apache.hc.client5.http.io.HttpClientConnectionManager; |
| import org.apache.hc.client5.http.io.LeaseRequest; |
| import org.apache.hc.client5.http.protocol.HttpClientContext; |
| import org.apache.hc.core5.concurrent.Cancellable; |
| import org.apache.hc.core5.concurrent.CancellableDependency; |
| import org.apache.hc.core5.http.ClassicHttpRequest; |
| import org.apache.hc.core5.http.ClassicHttpResponse; |
| import org.apache.hc.core5.http.ConnectionRequestTimeoutException; |
| import org.apache.hc.core5.http.HttpException; |
| import org.apache.hc.core5.http.impl.io.HttpRequestExecutor; |
| import org.apache.hc.core5.io.CloseMode; |
| import org.apache.hc.core5.util.Args; |
| import org.apache.hc.core5.util.TimeValue; |
| import org.apache.hc.core5.util.Timeout; |
| import org.slf4j.Logger; |
| |
| class InternalExecRuntime implements ExecRuntime, Cancellable { |
| |
| private final Logger log; |
| |
| private final HttpClientConnectionManager manager; |
| private final HttpRequestExecutor requestExecutor; |
| private final CancellableDependency cancellableDependency; |
| private final AtomicReference<ConnectionEndpoint> endpointRef; |
| |
| private volatile boolean reusable; |
| private volatile Object state; |
| private volatile TimeValue validDuration; |
| |
| InternalExecRuntime( |
| final Logger log, |
| final HttpClientConnectionManager manager, |
| final HttpRequestExecutor requestExecutor, |
| final CancellableDependency cancellableDependency) { |
| super(); |
| this.log = log; |
| this.manager = manager; |
| this.requestExecutor = requestExecutor; |
| this.cancellableDependency = cancellableDependency; |
| this.endpointRef = new AtomicReference<>(null); |
| this.validDuration = TimeValue.NEG_ONE_MILLISECOND; |
| } |
| |
| @Override |
| public boolean isExecutionAborted() { |
| return cancellableDependency != null && cancellableDependency.isCancelled(); |
| } |
| |
| @Override |
| public boolean isEndpointAcquired() { |
| return endpointRef.get() != null; |
| } |
| |
| @Override |
| public void acquireEndpoint( |
| final String id, final HttpRoute route, final Object object, final HttpClientContext context) throws IOException { |
| Args.notNull(route, "Route"); |
| if (endpointRef.get() == null) { |
| final RequestConfig requestConfig = context.getRequestConfig(); |
| final Timeout connectionRequestTimeout = requestConfig.getConnectionRequestTimeout(); |
| if (log.isDebugEnabled()) { |
| log.debug("{} acquiring endpoint ({})", id, connectionRequestTimeout); |
| } |
| final LeaseRequest connRequest = manager.lease(id, route, connectionRequestTimeout, object); |
| state = object; |
| if (cancellableDependency != null) { |
| cancellableDependency.setDependency(connRequest); |
| if (cancellableDependency.isCancelled()) { |
| connRequest.cancel(); |
| throw new RequestFailedException("Request aborted"); |
| } |
| } |
| try { |
| final ConnectionEndpoint connectionEndpoint = connRequest.get(connectionRequestTimeout); |
| endpointRef.set(connectionEndpoint); |
| reusable = connectionEndpoint.isConnected(); |
| if (cancellableDependency != null) { |
| cancellableDependency.setDependency(this); |
| if (cancellableDependency.isCancelled()) { |
| cancel(); |
| throw new RequestFailedException("Request aborted"); |
| } |
| } |
| if (log.isDebugEnabled()) { |
| log.debug("{} acquired endpoint {}", id, ConnPoolSupport.getId(connectionEndpoint)); |
| } |
| } catch(final TimeoutException ex) { |
| throw new ConnectionRequestTimeoutException(ex.getMessage()); |
| } catch(final InterruptedException interrupted) { |
| Thread.currentThread().interrupt(); |
| throw new RequestFailedException("Request aborted", interrupted); |
| } catch(final ExecutionException ex) { |
| Throwable cause = ex.getCause(); |
| if (cause == null) { |
| cause = ex; |
| } |
| throw new RequestFailedException("Request execution failed", cause); |
| } |
| } else { |
| throw new IllegalStateException("Endpoint already acquired"); |
| } |
| } |
| |
| ConnectionEndpoint ensureValid() { |
| final ConnectionEndpoint endpoint = endpointRef.get(); |
| if (endpoint == null) { |
| throw new IllegalStateException("Endpoint not acquired / already released"); |
| } |
| return endpoint; |
| } |
| |
| @Override |
| public boolean isEndpointConnected() { |
| final ConnectionEndpoint endpoint = endpointRef.get(); |
| return endpoint != null && endpoint.isConnected(); |
| } |
| |
| private void connectEndpoint(final ConnectionEndpoint endpoint, final HttpClientContext context) throws IOException { |
| if (cancellableDependency != null) { |
| if (cancellableDependency.isCancelled()) { |
| throw new RequestFailedException("Request aborted"); |
| } |
| } |
| final RequestConfig requestConfig = context.getRequestConfig(); |
| final Timeout connectTimeout = requestConfig.getConnectTimeout(); |
| if (log.isDebugEnabled()) { |
| log.debug("{} connecting endpoint ({})", ConnPoolSupport.getId(endpoint), connectTimeout); |
| } |
| manager.connect(endpoint, connectTimeout, context); |
| if (log.isDebugEnabled()) { |
| log.debug("{} endpoint connected", ConnPoolSupport.getId(endpoint)); |
| } |
| } |
| |
| @Override |
| public void connectEndpoint(final HttpClientContext context) throws IOException { |
| final ConnectionEndpoint endpoint = ensureValid(); |
| if (!endpoint.isConnected()) { |
| connectEndpoint(endpoint, context); |
| } |
| } |
| |
| @Override |
| public void disconnectEndpoint() throws IOException { |
| final ConnectionEndpoint endpoint = endpointRef.get(); |
| if (endpoint != null) { |
| endpoint.close(); |
| if (log.isDebugEnabled()) { |
| log.debug("{} endpoint closed", ConnPoolSupport.getId(endpoint)); |
| } |
| } |
| } |
| |
| @Override |
| public void upgradeTls(final HttpClientContext context) throws IOException { |
| final ConnectionEndpoint endpoint = ensureValid(); |
| if (log.isDebugEnabled()) { |
| log.debug("{} upgrading endpoint", ConnPoolSupport.getId(endpoint)); |
| } |
| manager.upgrade(endpoint, context); |
| } |
| |
| @Override |
| public ClassicHttpResponse execute( |
| final String id, |
| final ClassicHttpRequest request, |
| final HttpClientContext context) throws IOException, HttpException { |
| final ConnectionEndpoint endpoint = ensureValid(); |
| if (!endpoint.isConnected()) { |
| connectEndpoint(endpoint, context); |
| } |
| final RequestConfig requestConfig = context.getRequestConfig(); |
| final Timeout responseTimeout = requestConfig.getResponseTimeout(); |
| if (responseTimeout != null) { |
| endpoint.setSocketTimeout(responseTimeout); |
| } |
| if (log.isDebugEnabled()) { |
| log.debug("{} start execution {}", ConnPoolSupport.getId(endpoint), id); |
| } |
| return endpoint.execute(id, request, requestExecutor, context); |
| } |
| |
| @Override |
| public boolean isConnectionReusable() { |
| return reusable; |
| } |
| |
| @Override |
| public void markConnectionReusable(final Object state, final TimeValue validDuration) { |
| this.reusable = true; |
| this.state = state; |
| this.validDuration = validDuration; |
| } |
| |
| @Override |
| public void markConnectionNonReusable() { |
| reusable = false; |
| } |
| |
| private void discardEndpoint(final ConnectionEndpoint endpoint) { |
| try { |
| endpoint.close(CloseMode.IMMEDIATE); |
| if (log.isDebugEnabled()) { |
| log.debug("{} endpoint closed", ConnPoolSupport.getId(endpoint)); |
| } |
| } finally { |
| if (log.isDebugEnabled()) { |
| log.debug("{} discarding endpoint", ConnPoolSupport.getId(endpoint)); |
| } |
| manager.release(endpoint, null, TimeValue.ZERO_MILLISECONDS); |
| } |
| } |
| |
| @Override |
| public void releaseEndpoint() { |
| final ConnectionEndpoint endpoint = endpointRef.getAndSet(null); |
| if (endpoint != null) { |
| if (reusable) { |
| if (log.isDebugEnabled()) { |
| log.debug("{} releasing valid endpoint", ConnPoolSupport.getId(endpoint)); |
| } |
| manager.release(endpoint, state, validDuration); |
| } else { |
| discardEndpoint(endpoint); |
| } |
| } |
| } |
| |
| @Override |
| public void discardEndpoint() { |
| final ConnectionEndpoint endpoint = endpointRef.getAndSet(null); |
| if (endpoint != null) { |
| discardEndpoint(endpoint); |
| } |
| } |
| |
| @Override |
| public boolean cancel() { |
| final boolean alreadyReleased = endpointRef.get() == null; |
| final ConnectionEndpoint endpoint = endpointRef.getAndSet(null); |
| if (endpoint != null) { |
| if (log.isDebugEnabled()) { |
| log.debug("{} cancel", ConnPoolSupport.getId(endpoint)); |
| } |
| discardEndpoint(endpoint); |
| } |
| return !alreadyReleased; |
| } |
| |
| @Override |
| public ExecRuntime fork(final CancellableDependency cancellableDependency) { |
| return new InternalExecRuntime(log, manager, requestExecutor, cancellableDependency); |
| } |
| |
| } |