| /* |
| * ==================================================================== |
| * 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.io.InterruptedIOException; |
| |
| import org.apache.hc.client5.http.ClientProtocolException; |
| import org.apache.hc.client5.http.HttpRoute; |
| import org.apache.hc.client5.http.SchemePortResolver; |
| import org.apache.hc.client5.http.classic.ExecRuntime; |
| import org.apache.hc.client5.http.config.Configurable; |
| import org.apache.hc.client5.http.config.RequestConfig; |
| import org.apache.hc.client5.http.impl.ConnectionShutdownException; |
| import org.apache.hc.client5.http.impl.DefaultSchemePortResolver; |
| import org.apache.hc.client5.http.impl.ExecSupport; |
| import org.apache.hc.client5.http.io.HttpClientConnectionManager; |
| import org.apache.hc.client5.http.protocol.HttpClientContext; |
| import org.apache.hc.client5.http.protocol.RequestClientConnControl; |
| import org.apache.hc.client5.http.routing.RoutingSupport; |
| import org.apache.hc.core5.annotation.Contract; |
| import org.apache.hc.core5.annotation.ThreadingBehavior; |
| 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.ConnectionReuseStrategy; |
| import org.apache.hc.core5.http.HttpEntity; |
| import org.apache.hc.core5.http.HttpException; |
| import org.apache.hc.core5.http.HttpHost; |
| import org.apache.hc.core5.http.impl.DefaultConnectionReuseStrategy; |
| import org.apache.hc.core5.http.impl.io.HttpRequestExecutor; |
| import org.apache.hc.core5.http.protocol.BasicHttpContext; |
| import org.apache.hc.core5.http.protocol.DefaultHttpProcessor; |
| import org.apache.hc.core5.http.protocol.HttpContext; |
| import org.apache.hc.core5.http.protocol.HttpCoreContext; |
| import org.apache.hc.core5.http.protocol.HttpProcessor; |
| import org.apache.hc.core5.http.protocol.RequestContent; |
| import org.apache.hc.core5.http.protocol.RequestTargetHost; |
| import org.apache.hc.core5.http.protocol.RequestUserAgent; |
| import org.apache.hc.core5.io.CloseMode; |
| import org.apache.hc.core5.net.URIAuthority; |
| import org.apache.hc.core5.util.Args; |
| import org.apache.hc.core5.util.TimeValue; |
| import org.apache.hc.core5.util.VersionInfo; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Minimal implementation of {@link CloseableHttpClient}. This client is |
| * optimized for HTTP/1.1 message transport and does not support advanced |
| * HTTP protocol functionality such as request execution via a proxy, state |
| * management, authentication and request redirects. |
| * <p> |
| * Concurrent message exchanges executed by this client will get assigned to |
| * separate connections leased from the connection pool. |
| * </p> |
| * |
| * @since 4.3 |
| */ |
| @Contract(threading = ThreadingBehavior.SAFE_CONDITIONAL) |
| public class MinimalHttpClient extends CloseableHttpClient { |
| |
| private final Logger log = LoggerFactory.getLogger(getClass()); |
| |
| private final HttpClientConnectionManager connManager; |
| private final ConnectionReuseStrategy reuseStrategy; |
| private final SchemePortResolver schemePortResolver; |
| private final HttpRequestExecutor requestExecutor; |
| private final HttpProcessor httpProcessor; |
| |
| MinimalHttpClient(final HttpClientConnectionManager connManager) { |
| super(); |
| this.connManager = Args.notNull(connManager, "HTTP connection manager"); |
| this.reuseStrategy = DefaultConnectionReuseStrategy.INSTANCE; |
| this.schemePortResolver = DefaultSchemePortResolver.INSTANCE; |
| this.requestExecutor = new HttpRequestExecutor(this.reuseStrategy); |
| this.httpProcessor = new DefaultHttpProcessor( |
| new RequestContent(), |
| new RequestTargetHost(), |
| new RequestClientConnControl(), |
| new RequestUserAgent(VersionInfo.getSoftwareInfo( |
| "Apache-HttpClient", "org.apache.hc.client5", getClass()))); |
| } |
| |
| @Override |
| protected CloseableHttpResponse doExecute( |
| final HttpHost target, |
| final ClassicHttpRequest request, |
| final HttpContext context) throws IOException { |
| Args.notNull(target, "Target host"); |
| Args.notNull(request, "HTTP request"); |
| if (request.getScheme() == null) { |
| request.setScheme(target.getSchemeName()); |
| } |
| if (request.getAuthority() == null) { |
| request.setAuthority(new URIAuthority(target)); |
| } |
| final HttpClientContext clientContext = HttpClientContext.adapt( |
| context != null ? context : new BasicHttpContext()); |
| RequestConfig config = null; |
| if (request instanceof Configurable) { |
| config = ((Configurable) request).getConfig(); |
| } |
| if (config != null) { |
| clientContext.setRequestConfig(config); |
| } |
| |
| final HttpRoute route = new HttpRoute(RoutingSupport.normalize(target, schemePortResolver)); |
| final String exchangeId = ExecSupport.getNextExchangeId(); |
| final ExecRuntime execRuntime = new InternalExecRuntime(log, connManager, requestExecutor, |
| request instanceof CancellableDependency ? (CancellableDependency) request : null); |
| try { |
| if (!execRuntime.isEndpointAcquired()) { |
| execRuntime.acquireEndpoint(exchangeId, route, null, clientContext); |
| } |
| if (!execRuntime.isEndpointConnected()) { |
| execRuntime.connectEndpoint(clientContext); |
| } |
| |
| context.setAttribute(HttpCoreContext.HTTP_REQUEST, request); |
| context.setAttribute(HttpClientContext.HTTP_ROUTE, route); |
| |
| httpProcessor.process(request, request.getEntity(), context); |
| final ClassicHttpResponse response = execRuntime.execute(exchangeId, request, clientContext); |
| httpProcessor.process(response, response.getEntity(), context); |
| |
| if (reuseStrategy.keepAlive(request, response, context)) { |
| execRuntime.markConnectionReusable(null, TimeValue.NEG_ONE_MILLISECONDS); |
| } else { |
| execRuntime.markConnectionNonReusable(); |
| } |
| |
| // check for entity, release connection if possible |
| final HttpEntity entity = response.getEntity(); |
| if (entity == null || !entity.isStreaming()) { |
| // connection not needed and (assumed to be) in re-usable state |
| execRuntime.releaseEndpoint(); |
| return new CloseableHttpResponse(response, null); |
| } |
| ResponseEntityProxy.enhance(response, execRuntime); |
| return new CloseableHttpResponse(response, execRuntime); |
| } catch (final ConnectionShutdownException ex) { |
| final InterruptedIOException ioex = new InterruptedIOException("Connection has been shut down"); |
| ioex.initCause(ex); |
| execRuntime.discardEndpoint(); |
| throw ioex; |
| } catch (final HttpException httpException) { |
| execRuntime.discardEndpoint(); |
| throw new ClientProtocolException(httpException); |
| } catch (final RuntimeException | IOException ex) { |
| execRuntime.discardEndpoint(); |
| throw ex; |
| } catch (final Error error) { |
| connManager.close(CloseMode.IMMEDIATE); |
| throw error; |
| } |
| } |
| |
| @Override |
| public void close() throws IOException { |
| this.connManager.close(); |
| } |
| |
| @Override |
| public void close(final CloseMode closeMode) { |
| this.connManager.close(closeMode); |
| } |
| |
| } |
