src/share/jaxws_classes/com/sun/xml/internal/ws/api/EndpointAddress.java

Thu, 31 Aug 2017 15:18:52 +0800

author
aoqi
date
Thu, 31 Aug 2017 15:18:52 +0800
changeset 637
9c07ef4934dd
parent 368
0989ad8c0860
parent 0
373ffda63c9a
permissions
-rw-r--r--

merge

aoqi@0 1 /*
aoqi@0 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0 4 *
aoqi@0 5 * This code is free software; you can redistribute it and/or modify it
aoqi@0 6 * under the terms of the GNU General Public License version 2 only, as
aoqi@0 7 * published by the Free Software Foundation. Oracle designates this
aoqi@0 8 * particular file as subject to the "Classpath" exception as provided
aoqi@0 9 * by Oracle in the LICENSE file that accompanied this code.
aoqi@0 10 *
aoqi@0 11 * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0 14 * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0 15 * accompanied this code).
aoqi@0 16 *
aoqi@0 17 * You should have received a copy of the GNU General Public License version
aoqi@0 18 * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0 20 *
aoqi@0 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0 22 * or visit www.oracle.com if you need additional information or have any
aoqi@0 23 * questions.
aoqi@0 24 */
aoqi@0 25
aoqi@0 26 package com.sun.xml.internal.ws.api;
aoqi@0 27
aoqi@0 28 import com.sun.istack.internal.Nullable;
aoqi@0 29
aoqi@0 30 import javax.xml.ws.WebServiceException;
aoqi@0 31 import java.io.IOException;
aoqi@0 32 import java.net.MalformedURLException;
aoqi@0 33 import java.net.Proxy;
aoqi@0 34 import java.net.ProxySelector;
aoqi@0 35 import java.net.URI;
aoqi@0 36 import java.net.URISyntaxException;
aoqi@0 37 import java.net.URL;
aoqi@0 38 import java.net.URLConnection;
aoqi@0 39 import java.net.URLStreamHandler;
aoqi@0 40 import java.util.Iterator;
aoqi@0 41
aoqi@0 42 /**
aoqi@0 43 * Represents the endpoint address URI.
aoqi@0 44 *
aoqi@0 45 * <p>
aoqi@0 46 * Conceptually this can be really thought of as an {@link URI},
aoqi@0 47 * but it hides some of the details that improve the performance.
aoqi@0 48 *
aoqi@0 49 * <p>
aoqi@0 50 * Being an {@link URI} allows this class to represent custom made-up URIs
aoqi@0 51 * (like "jms" for example.) Whenever possible, this object
aoqi@0 52 * also creates an {@link URL} (this is only possible when the address
aoqi@0 53 * has a registered {@link URLStreamHandler}), so that if the clients
aoqi@0 54 * of this code wants to use it, it can do so.
aoqi@0 55 *
aoqi@0 56 *
aoqi@0 57 * <h3>How it improves the performance</h3>
aoqi@0 58 * <ol>
aoqi@0 59 * <li>
aoqi@0 60 * Endpoint address is often eventually turned into an {@link URLConnection},
aoqi@0 61 * and given that generally this value is read more often than being set,
aoqi@0 62 * it makes sense to eagerly turn it into an {@link URL},
aoqi@0 63 * thereby avoiding a repeated conversion.
aoqi@0 64 *
aoqi@0 65 * <li>
aoqi@0 66 * JDK spends a lot of time choosing a list of {@link Proxy}
aoqi@0 67 * to connect to an {@link URL}. Since the default proxy selector
aoqi@0 68 * implementation always return the same proxy for the same URL,
aoqi@0 69 * we can determine the proxy by ourselves to let JDK skip its
aoqi@0 70 * proxy-discovery step.
aoqi@0 71 *
aoqi@0 72 * (That said, user-defined proxy selector can do a lot of interesting things
aoqi@0 73 * --- like doing a round-robin, or pick one from a proxy farm randomly,
aoqi@0 74 * and so it's dangerous to stick to one proxy. For this case,
aoqi@0 75 * we still let JDK decide the proxy. This shouldn't be that much of an
aoqi@0 76 * disappointment, since most people only mess with system properties,
aoqi@0 77 * and never with {@link ProxySelector}. Also, avoiding optimization
aoqi@0 78 * with non-standard proxy selector allows people to effectively disable
aoqi@0 79 * this optimization, which may come in handy for a trouble-shooting.)
aoqi@0 80 * </ol>
aoqi@0 81 *
aoqi@0 82 * @author Kohsuke Kawaguchi
aoqi@0 83 */
aoqi@0 84 public final class EndpointAddress {
aoqi@0 85 @Nullable
aoqi@0 86 private URL url;
aoqi@0 87 private final URI uri;
aoqi@0 88 private final String stringForm;
aoqi@0 89 private volatile boolean dontUseProxyMethod;
aoqi@0 90 /**
aoqi@0 91 * Pre-selected proxy.
aoqi@0 92 *
aoqi@0 93 * If {@link #url} is null, this field is null.
aoqi@0 94 * Otherwise, this field could still be null if the proxy couldn't be chosen
aoqi@0 95 * upfront.
aoqi@0 96 */
aoqi@0 97 private Proxy proxy;
aoqi@0 98
aoqi@0 99 public EndpointAddress(URI uri) {
aoqi@0 100 this.uri = uri;
aoqi@0 101 this.stringForm = uri.toString();
aoqi@0 102 try {
aoqi@0 103 initURL();
aoqi@0 104 proxy = chooseProxy();
aoqi@0 105 } catch (MalformedURLException e) {
aoqi@0 106 // ignore
aoqi@0 107 }
aoqi@0 108 }
aoqi@0 109
aoqi@0 110 /**
aoqi@0 111 *
aoqi@0 112 * @see #create(String)
aoqi@0 113 */
aoqi@0 114 public EndpointAddress(String url) throws URISyntaxException {
aoqi@0 115 this.uri = new URI(url);
aoqi@0 116 this.stringForm = url;
aoqi@0 117 try {
aoqi@0 118 initURL();
aoqi@0 119 proxy = chooseProxy();
aoqi@0 120 } catch (MalformedURLException e) {
aoqi@0 121 // ignore
aoqi@0 122 }
aoqi@0 123 }
aoqi@0 124
aoqi@0 125
aoqi@0 126 private void initURL() throws MalformedURLException {
aoqi@0 127 String scheme = uri.getScheme();
aoqi@0 128 //URI.toURL() only works when scheme is not null.
aoqi@0 129 if (scheme == null) {
aoqi@0 130 this.url = new URL(uri.toString());
aoqi@0 131 return;
aoqi@0 132 }
aoqi@0 133 scheme =scheme.toLowerCase();
aoqi@0 134 if ("http".equals(scheme) || "https".equals(scheme)) {
aoqi@0 135 url = new URL(uri.toASCIIString());
aoqi@0 136 } else {
aoqi@0 137 this.url = uri.toURL();
aoqi@0 138 }
aoqi@0 139 }
aoqi@0 140
aoqi@0 141 /**
aoqi@0 142 * Creates a new {@link EndpointAddress} with a reasonably
aoqi@0 143 * generic error handling.
aoqi@0 144 */
aoqi@0 145 public static EndpointAddress create(String url) {
aoqi@0 146 try {
aoqi@0 147 return new EndpointAddress(url);
aoqi@0 148 } catch(URISyntaxException e) {
aoqi@0 149 throw new WebServiceException("Illegal endpoint address: "+url,e);
aoqi@0 150 }
aoqi@0 151 }
aoqi@0 152
aoqi@0 153 private Proxy chooseProxy() {
aoqi@0 154 ProxySelector sel =
aoqi@0 155 java.security.AccessController.doPrivileged(
aoqi@0 156 new java.security.PrivilegedAction<ProxySelector>() {
aoqi@0 157 @Override
aoqi@0 158 public ProxySelector run() {
aoqi@0 159 return ProxySelector.getDefault();
aoqi@0 160 }
aoqi@0 161 });
aoqi@0 162
aoqi@0 163 if(sel==null)
aoqi@0 164 return Proxy.NO_PROXY;
aoqi@0 165
aoqi@0 166
aoqi@0 167 if(!sel.getClass().getName().equals("sun.net.spi.DefaultProxySelector"))
aoqi@0 168 // user-defined proxy. may return a different proxy for each invocation
aoqi@0 169 return null;
aoqi@0 170
aoqi@0 171 Iterator<Proxy> it = sel.select(uri).iterator();
aoqi@0 172 if(it.hasNext())
aoqi@0 173 return it.next();
aoqi@0 174
aoqi@0 175 return Proxy.NO_PROXY;
aoqi@0 176 }
aoqi@0 177
aoqi@0 178 /**
aoqi@0 179 * Returns an URL of this endpoint adress.
aoqi@0 180 *
aoqi@0 181 * @return
aoqi@0 182 * null if this endpoint address doesn't have a registered {@link URLStreamHandler}.
aoqi@0 183 */
aoqi@0 184 public URL getURL() {
aoqi@0 185 return url;
aoqi@0 186 }
aoqi@0 187
aoqi@0 188 /**
aoqi@0 189 * Returns an URI of the endpoint address.
aoqi@0 190 *
aoqi@0 191 * @return
aoqi@0 192 * always non-null.
aoqi@0 193 */
aoqi@0 194 public URI getURI() {
aoqi@0 195 return uri;
aoqi@0 196 }
aoqi@0 197
aoqi@0 198 /**
aoqi@0 199 * Tries to open {@link URLConnection} for this endpoint.
aoqi@0 200 *
aoqi@0 201 * <p>
aoqi@0 202 * This is possible only when an endpoint address has
aoqi@0 203 * the corresponding {@link URLStreamHandler}.
aoqi@0 204 *
aoqi@0 205 * @throws IOException
aoqi@0 206 * if {@link URL#openConnection()} reports an error.
aoqi@0 207 * @throws AssertionError
aoqi@0 208 * if this endpoint doesn't have an associated URL.
aoqi@0 209 * if the code is written correctly this shall never happen.
aoqi@0 210 */
aoqi@0 211 public URLConnection openConnection() throws IOException {
aoqi@0 212 if (url == null) {
aoqi@0 213 throw new WebServiceException("URI="+uri+" doesn't have the corresponding URL");
aoqi@0 214 }
aoqi@0 215 if(proxy!=null && !dontUseProxyMethod) {
aoqi@0 216 try {
aoqi@0 217 return url.openConnection(proxy);
aoqi@0 218 } catch(UnsupportedOperationException e) {
aoqi@0 219 // Some OSGi and app server environments donot
aoqi@0 220 // override URLStreamHandler.openConnection(URL, Proxy) as it
aoqi@0 221 // is introduced in Java SE 5 API. Fallback to the other method.
aoqi@0 222 dontUseProxyMethod = true;
aoqi@0 223 }
aoqi@0 224 }
aoqi@0 225 return url.openConnection();
aoqi@0 226 }
aoqi@0 227
aoqi@0 228 @Override
aoqi@0 229 public String toString() {
aoqi@0 230 return stringForm;
aoqi@0 231 }
aoqi@0 232 }

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