Java tutorial
/* * Sonatype Nexus (TM) Open Source Version * Copyright (c) 2008-present Sonatype, Inc. * All rights reserved. Includes the third-party code listed at http://links.sonatype.com/products/nexus/oss/attributions. * * This program and the accompanying materials are made available under the terms of the Eclipse Public License Version 1.0, * which accompanies this distribution and is available at http://www.eclipse.org/legal/epl-v10.html. * * Sonatype Nexus (TM) Professional Version is available from Sonatype, Inc. "Sonatype" and "Sonatype Nexus" are trademarks * of Sonatype, Inc. Apache Maven is a trademark of the Apache Software Foundation. M2eclipse is a trademark of the * Eclipse Foundation. All other trademarks are the property of their respective owners. */ package org.sonatype.nexus.httpclient.internal; import java.util.Map; import java.util.regex.Pattern; import javax.annotation.Nullable; import org.apache.http.HttpException; import org.apache.http.HttpHost; import org.apache.http.HttpRequest; import org.apache.http.conn.routing.HttpRoutePlanner; import org.apache.http.impl.conn.DefaultRoutePlanner; import org.apache.http.impl.conn.DefaultSchemePortResolver; import org.apache.http.protocol.HttpContext; import static com.google.common.base.Preconditions.checkNotNull; /** * An {@link HttpRoutePlanner} that uses different proxies / url scheme (http/https) and bypasses proxy for specific * hosts (non proxy hosts). * * @since 2.6 */ public class NexusHttpRoutePlanner extends DefaultRoutePlanner { /** * Single regexp pattern covering non-proxy-hosts, never {@code null} */ private final Pattern nonProxyHostPattern; /** * Mapping between protocol scheme and proxy to be used */ private final Map<String, HttpHost> proxies; /** * @since 2.5 */ public NexusHttpRoutePlanner(final Map<String, HttpHost> proxies, @Nullable final Pattern nonProxyHostsPattern) { super(DefaultSchemePortResolver.INSTANCE); this.proxies = checkNotNull(proxies); this.nonProxyHostPattern = nonProxyHostsPattern; } @Override protected HttpHost determineProxy(final HttpHost host, final HttpRequest request, final HttpContext context) throws HttpException { if (noProxyFor(host.getHostName())) { return null; } return proxies.get(host.getSchemeName()); } // TODO: Should we guard this with a cache to avoid rematching regex constantly? /** * Determine if proxy should be configured for given host or not. * * @return true if no proxy should be configured. */ private boolean noProxyFor(final String hostName) { return nonProxyHostPattern != null && nonProxyHostPattern.matcher(hostName).matches(); } }