Java tutorial
/* * ==================================================================== * 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.http.impl.nio.client; import java.util.List; import java.util.concurrent.Future; import java.util.concurrent.ThreadFactory; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.http.ConnectionReuseStrategy; import org.apache.http.HttpHost; import org.apache.http.auth.AuthSchemeProvider; import org.apache.http.auth.AuthState; import org.apache.http.client.CookieStore; import org.apache.http.client.CredentialsProvider; import org.apache.http.client.config.RequestConfig; import org.apache.http.client.protocol.HttpClientContext; import org.apache.http.concurrent.BasicFuture; import org.apache.http.concurrent.FutureCallback; import org.apache.http.config.Lookup; import org.apache.http.conn.ConnectionKeepAliveStrategy; import org.apache.http.cookie.CookieSpecProvider; import org.apache.http.nio.NHttpClientEventHandler; import org.apache.http.nio.conn.NHttpClientConnectionManager; import org.apache.http.nio.protocol.HttpAsyncRequestProducer; import org.apache.http.nio.protocol.HttpAsyncResponseConsumer; import org.apache.http.protocol.BasicHttpContext; import org.apache.http.protocol.HttpContext; class InternalHttpAsyncClient extends CloseableHttpAsyncClientBase { private final Log log = LogFactory.getLog(getClass()); private final NHttpClientConnectionManager connmgr; private final ConnectionReuseStrategy connReuseStrategy; private final ConnectionKeepAliveStrategy keepaliveStrategy; private final InternalClientExec exec; private final Lookup<CookieSpecProvider> cookieSpecRegistry; private final Lookup<AuthSchemeProvider> authSchemeRegistry; private final CookieStore cookieStore; private final CredentialsProvider credentialsProvider; private final RequestConfig defaultConfig; public InternalHttpAsyncClient(final NHttpClientConnectionManager connmgr, final ConnectionReuseStrategy connReuseStrategy, final ConnectionKeepAliveStrategy keepaliveStrategy, final ThreadFactory threadFactory, final NHttpClientEventHandler handler, final InternalClientExec exec, final Lookup<CookieSpecProvider> cookieSpecRegistry, final Lookup<AuthSchemeProvider> authSchemeRegistry, final CookieStore cookieStore, final CredentialsProvider credentialsProvider, final RequestConfig defaultConfig) { super(connmgr, threadFactory, handler); this.connmgr = connmgr; this.connReuseStrategy = connReuseStrategy; this.keepaliveStrategy = keepaliveStrategy; this.exec = exec; this.cookieSpecRegistry = cookieSpecRegistry; this.authSchemeRegistry = authSchemeRegistry; this.cookieStore = cookieStore; this.credentialsProvider = credentialsProvider; this.defaultConfig = defaultConfig; } private void setupContext(final HttpClientContext context) { if (context.getAttribute(HttpClientContext.TARGET_AUTH_STATE) == null) { context.setAttribute(HttpClientContext.TARGET_AUTH_STATE, new AuthState()); } if (context.getAttribute(HttpClientContext.PROXY_AUTH_STATE) == null) { context.setAttribute(HttpClientContext.PROXY_AUTH_STATE, new AuthState()); } if (context.getAttribute(HttpClientContext.AUTHSCHEME_REGISTRY) == null) { context.setAttribute(HttpClientContext.AUTHSCHEME_REGISTRY, this.authSchemeRegistry); } if (context.getAttribute(HttpClientContext.COOKIESPEC_REGISTRY) == null) { context.setAttribute(HttpClientContext.COOKIESPEC_REGISTRY, this.cookieSpecRegistry); } if (context.getAttribute(HttpClientContext.COOKIE_STORE) == null) { context.setAttribute(HttpClientContext.COOKIE_STORE, this.cookieStore); } if (context.getAttribute(HttpClientContext.CREDS_PROVIDER) == null) { context.setAttribute(HttpClientContext.CREDS_PROVIDER, this.credentialsProvider); } if (context.getAttribute(HttpClientContext.REQUEST_CONFIG) == null) { context.setAttribute(HttpClientContext.REQUEST_CONFIG, this.defaultConfig); } } @Override public <T> Future<T> execute(final HttpAsyncRequestProducer requestProducer, final HttpAsyncResponseConsumer<T> responseConsumer, final HttpContext context, final FutureCallback<T> callback) { ensureRunning(); final BasicFuture<T> future = new BasicFuture<T>(callback); final HttpClientContext localcontext = HttpClientContext .adapt(context != null ? context : new BasicHttpContext()); setupContext(localcontext); @SuppressWarnings("resource") final DefaultClientExchangeHandlerImpl<T> handler = new DefaultClientExchangeHandlerImpl<T>(this.log, requestProducer, responseConsumer, localcontext, future, this.connmgr, this.connReuseStrategy, this.keepaliveStrategy, this.exec); try { handler.start(); } catch (final Exception ex) { handler.failed(ex); } return future; } @Override public <T> Future<List<T>> execute(final HttpHost target, final List<? extends HttpAsyncRequestProducer> requestProducers, final List<? extends HttpAsyncResponseConsumer<T>> responseConsumers, final HttpContext context, final FutureCallback<List<T>> callback) { throw new UnsupportedOperationException("Pipelining not supported"); } }