Mercurial > hg4j

annotate src/org/tmatesoft/hg/repo/HgRemoteRepository.java @ 420:6c22bdc0bdfd

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author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 22 Mar 2012 22:56:01 +0100
parents bb278ccf9866
children 9c9c442b5f2e
rev   line source
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1 /*
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2 * Copyright (c) 2011-2012 TMate Software Ltd
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; version 2 of the License.
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7 *
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8 * This program is distributed in the hope that it will be useful,
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
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12 *
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13 * For information on how to redistribute this software under
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14 * the terms of a license other than GNU General Public License
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.repo;
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19 import java.io.File;
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20 import java.io.FileOutputStream;
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21 import java.io.IOException;
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22 import java.io.InputStream;
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23 import java.io.InputStreamReader;
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24 import java.io.OutputStream;
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25 import java.io.StreamTokenizer;
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26 import java.net.HttpURLConnection;
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27 import java.net.MalformedURLException;
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28 import java.net.URL;
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29 import java.net.URLConnection;
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30 import java.security.cert.CertificateException;
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31 import java.security.cert.X509Certificate;
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32 import java.util.ArrayList;
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33 import java.util.Collection;
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34 import java.util.Collections;
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35 import java.util.Iterator;
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36 import java.util.LinkedHashMap;
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37 import java.util.LinkedList;
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38 import java.util.List;
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39 import java.util.Map;
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40 import java.util.prefs.BackingStoreException;
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41 import java.util.prefs.Preferences;
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42 import java.util.zip.InflaterInputStream;
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43
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44 import javax.net.ssl.HttpsURLConnection;
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45 import javax.net.ssl.SSLContext;
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46 import javax.net.ssl.TrustManager;
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47 import javax.net.ssl.X509TrustManager;
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48
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49 import org.tmatesoft.hg.core.HgBadArgumentException;
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50 import org.tmatesoft.hg.core.HgBadStateException;
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51 import org.tmatesoft.hg.core.HgInvalidFileException;
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52 import org.tmatesoft.hg.core.HgRemoteConnectionException;
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53 import org.tmatesoft.hg.core.Nodeid;
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54 import org.tmatesoft.hg.core.SessionContext;
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55
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56 /**
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57 * WORK IN PROGRESS, DO NOT USE
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58 *
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59 * @see http://mercurial.selenic.com/wiki/WireProtocol
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60 *
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61 * @author Artem Tikhomirov
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62 * @author TMate Software Ltd.
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63 */
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64 public class HgRemoteRepository {
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65
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66 private final URL url;
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67 private final SSLContext sslContext;
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68 private final String authInfo;
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69 private final boolean debug;
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70 private HgLookup lookupHelper;
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71 private final SessionContext sessionContext;
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72
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73 HgRemoteRepository(SessionContext ctx, URL url) throws HgBadArgumentException {
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74 if (url == null || ctx == null) {
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75 throw new IllegalArgumentException();
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76 }
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77 this.url = url;
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78 sessionContext = ctx;
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79 Object debugProp = ctx.getProperty("hg4j.remote.debug", false);
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80 debug = debugProp instanceof Boolean ? ((Boolean) debugProp).booleanValue() : Boolean.parseBoolean(String.valueOf(debugProp));
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81 if ("https".equals(url.getProtocol())) {
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82 try {
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83 sslContext = SSLContext.getInstance("SSL");
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84 class TrustEveryone implements X509TrustManager {
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85 public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
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86 if (debug) {
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87 System.out.println("checkClientTrusted:" + authType);
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88 }
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89 }
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90 public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
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91 if (debug) {
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92 System.out.println("checkServerTrusted:" + authType);
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93 }
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94 }
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95 public X509Certificate[] getAcceptedIssuers() {
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96 return new X509Certificate[0];
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97 }
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98 };
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99 sslContext.init(null, new TrustManager[] { new TrustEveryone() }, null);
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100 } catch (Exception ex) {
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101 throw new HgBadArgumentException("Can't initialize secure connection", ex);
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102 }
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103 } else {
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104 sslContext = null;
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105 }
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106 if (url.getUserInfo() != null) {
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107 String ai = null;
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108 try {
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109 // Hack to get Base64-encoded credentials
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110 Preferences tempNode = Preferences.userRoot().node("xxx");
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111 tempNode.putByteArray("xxx", url.getUserInfo().getBytes());
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112 ai = tempNode.get("xxx", null);
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113 tempNode.removeNode();
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114 } catch (BackingStoreException ex) {
357
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115 sessionContext.getLog().info(getClass(), ex, null);
176
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116 // IGNORE
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117 }
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118 authInfo = ai;
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119 } else {
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120 authInfo = null;
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121 }
171
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122 }
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123
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124 public boolean isInvalid() throws HgRemoteConnectionException {
181
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125 // say hello to server, check response
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126 if (Boolean.FALSE.booleanValue()) {
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127 throw HgRepository.notImplemented();
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128 }
383
994b5813a925 Few comments
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129 return false; // FIXME implement remote repository hello/check
181
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130 }
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131
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132 /**
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133 * @return human-readable address of the server, without user credentials or any other security information
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134 */
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135 public String getLocation() {
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136 if (url.getUserInfo() == null) {
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137 return url.toExternalForm();
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138 }
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139 if (url.getPort() != -1) {
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140 return String.format("%s://%s:%d%s", url.getProtocol(), url.getHost(), url.getPort(), url.getPath());
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141 } else {
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142 return String.format("%s://%s%s", url.getProtocol(), url.getHost(), url.getPath());
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143 }
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144 }
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145
215
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146 public List<Nodeid> heads() throws HgRemoteConnectionException {
178
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147 try {
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148 URL u = new URL(url, url.getPath() + "?cmd=heads");
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149 HttpURLConnection c = setupConnection(u.openConnection());
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150 c.connect();
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151 if (debug) {
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152 dumpResponseHeader(u, c);
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153 }
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154 InputStreamReader is = new InputStreamReader(c.getInputStream(), "US-ASCII");
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155 StreamTokenizer st = new StreamTokenizer(is);
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156 st.ordinaryChars('0', '9');
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157 st.wordChars('0', '9');
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158 st.eolIsSignificant(false);
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159 LinkedList<Nodeid> parseResult = new LinkedList<Nodeid>();
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160 while (st.nextToken() != StreamTokenizer.TT_EOF) {
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161 parseResult.add(Nodeid.fromAscii(st.sval));
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162 }
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163 return parseResult;
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164 } catch (MalformedURLException ex) {
215
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165 throw new HgRemoteConnectionException("Bad URL", ex).setRemoteCommand("heads").setServerInfo(getLocation());
178
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166 } catch (IOException ex) {
215
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167 throw new HgRemoteConnectionException("Communication failure", ex).setRemoteCommand("heads").setServerInfo(getLocation());
178
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168 }
171
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169 }
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170
215
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171 public List<Nodeid> between(Nodeid tip, Nodeid base) throws HgRemoteConnectionException {
177
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172 Range r = new Range(base, tip);
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173 // XXX shall handle errors like no range key in the returned map, not sure how.
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174 return between(Collections.singletonList(r)).get(r);
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175 }
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176
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177 /**
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178 * @param ranges
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179 * @return map, where keys are input instances, values are corresponding server reply
215
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180 * @throws HgRemoteConnectionException
177
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181 */
215
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182 public Map<Range, List<Nodeid>> between(Collection<Range> ranges) throws HgRemoteConnectionException {
177
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183 if (ranges.isEmpty()) {
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184 return Collections.emptyMap();
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185 }
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186 // if fact, shall do other way round, this method shall send
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187 LinkedHashMap<Range, List<Nodeid>> rv = new LinkedHashMap<HgRemoteRepository.Range, List<Nodeid>>(ranges.size() * 4 / 3);
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188 StringBuilder sb = new StringBuilder(20 + ranges.size() * 82);
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189 sb.append("pairs=");
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190 for (Range r : ranges) {
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191 sb.append(r.end.toString());
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192 sb.append('-');
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193 sb.append(r.start.toString());
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194 sb.append('+');
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195 }
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diff changeset
196 if (sb.charAt(sb.length() - 1) == '+') {
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197 // strip last space
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198 sb.setLength(sb.length() - 1);
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199 }
176
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diff changeset
200 try {
177
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201 boolean usePOST = ranges.size() > 3;
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202 URL u = new URL(url, url.getPath() + "?cmd=between" + (usePOST ? "" : '&' + sb.toString()));
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203 HttpURLConnection c = setupConnection(u.openConnection());
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204 if (usePOST) {
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205 c.setRequestMethod("POST");
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206 c.setRequestProperty("Content-Length", String.valueOf(sb.length()/*nodeids are ASCII, bytes == characters */));
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207 c.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
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208 c.setDoOutput(true);
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209 c.connect();
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diff changeset
210 OutputStream os = c.getOutputStream();
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diff changeset
211 os.write(sb.toString().getBytes());
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212 os.flush();
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diff changeset
213 os.close();
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diff changeset
214 } else {
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diff changeset
215 c.connect();
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diff changeset
216 }
178
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diff changeset
217 if (debug) {
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diff changeset
218 System.out.printf("%d ranges, method:%s \n", ranges.size(), c.getRequestMethod());
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diff changeset
219 dumpResponseHeader(u, c);
176
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220 }
177
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diff changeset
221 InputStreamReader is = new InputStreamReader(c.getInputStream(), "US-ASCII");
176
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diff changeset
222 StreamTokenizer st = new StreamTokenizer(is);
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diff changeset
223 st.ordinaryChars('0', '9');
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diff changeset
224 st.wordChars('0', '9');
177
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225 st.eolIsSignificant(true);
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diff changeset
226 Iterator<Range> rangeItr = ranges.iterator();
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227 LinkedList<Nodeid> currRangeList = null;
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diff changeset
228 Range currRange = null;
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229 boolean possiblyEmptyNextLine = true;
176
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diff changeset
230 while (st.nextToken() != StreamTokenizer.TT_EOF) {
177
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diff changeset
231 if (st.ttype == StreamTokenizer.TT_EOL) {
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diff changeset
232 if (possiblyEmptyNextLine) {
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233 // newline follows newline;
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diff changeset
234 assert currRange == null;
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235 assert currRangeList == null;
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diff changeset
236 if (!rangeItr.hasNext()) {
403
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diff changeset
237 throw new HgBadStateException("Internal error");
177
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238 }
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diff changeset
239 rv.put(rangeItr.next(), Collections.<Nodeid>emptyList());
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240 } else {
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diff changeset
241 if (currRange == null || currRangeList == null) {
403
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diff changeset
242 throw new HgBadStateException("Internal error");
177
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243 }
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244 // indicate next range value is needed
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245 currRange = null;
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246 currRangeList = null;
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diff changeset
247 possiblyEmptyNextLine = true;
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248 }
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diff changeset
249 } else {
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diff changeset
250 possiblyEmptyNextLine = false;
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diff changeset
251 if (currRange == null) {
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diff changeset
252 if (!rangeItr.hasNext()) {
403
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diff changeset
253 throw new HgBadStateException("Internal error");
177
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254 }
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diff changeset
255 currRange = rangeItr.next();
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diff changeset
256 currRangeList = new LinkedList<Nodeid>();
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diff changeset
257 rv.put(currRange, currRangeList);
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diff changeset
258 }
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diff changeset
259 Nodeid nid = Nodeid.fromAscii(st.sval);
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260 currRangeList.addLast(nid);
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diff changeset
261 }
176
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262 }
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diff changeset
263 is.close();
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264 return rv;
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diff changeset
265 } catch (MalformedURLException ex) {
215
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
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diff changeset
266 throw new HgRemoteConnectionException("Bad URL", ex).setRemoteCommand("between").setServerInfo(getLocation());
176
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diff changeset
267 } catch (IOException ex) {
215
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parents: 210
diff changeset
268 throw new HgRemoteConnectionException("Communication failure", ex).setRemoteCommand("between").setServerInfo(getLocation());
176
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diff changeset
269 }
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diff changeset
270 }
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diff changeset
271
215
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diff changeset
272 public List<RemoteBranch> branches(List<Nodeid> nodes) throws HgRemoteConnectionException {
178
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diff changeset
273 StringBuilder sb = new StringBuilder(20 + nodes.size() * 41);
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diff changeset
274 sb.append("nodes=");
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diff changeset
275 for (Nodeid n : nodes) {
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diff changeset
276 sb.append(n.toString());
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diff changeset
277 sb.append('+');
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diff changeset
278 }
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diff changeset
279 if (sb.charAt(sb.length() - 1) == '+') {
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diff changeset
280 // strip last space
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diff changeset
281 sb.setLength(sb.length() - 1);
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diff changeset
282 }
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diff changeset
283 try {
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diff changeset
284 URL u = new URL(url, url.getPath() + "?cmd=branches&" + sb.toString());
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diff changeset
285 HttpURLConnection c = setupConnection(u.openConnection());
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diff changeset
286 c.connect();
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diff changeset
287 if (debug) {
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diff changeset
288 dumpResponseHeader(u, c);
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diff changeset
289 }
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diff changeset
290 InputStreamReader is = new InputStreamReader(c.getInputStream(), "US-ASCII");
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diff changeset
291 StreamTokenizer st = new StreamTokenizer(is);
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diff changeset
292 st.ordinaryChars('0', '9');
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diff changeset
293 st.wordChars('0', '9');
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diff changeset
294 st.eolIsSignificant(false);
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diff changeset
295 ArrayList<Nodeid> parseResult = new ArrayList<Nodeid>(nodes.size() * 4);
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diff changeset
296 while (st.nextToken() != StreamTokenizer.TT_EOF) {
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diff changeset
297 parseResult.add(Nodeid.fromAscii(st.sval));
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diff changeset
298 }
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diff changeset
299 if (parseResult.size() != nodes.size() * 4) {
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diff changeset
300 throw new HgRemoteConnectionException(String.format("Bad number of nodeids in result (shall be factor 4), expected %d, got %d", nodes.size()*4, parseResult.size()));
178
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diff changeset
301 }
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diff changeset
302 ArrayList<RemoteBranch> rv = new ArrayList<RemoteBranch>(nodes.size());
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diff changeset
303 for (int i = 0; i < nodes.size(); i++) {
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diff changeset
304 RemoteBranch rb = new RemoteBranch(parseResult.get(i*4), parseResult.get(i*4 + 1), parseResult.get(i*4 + 2), parseResult.get(i*4 + 3));
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305 rv.add(rb);
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diff changeset
306 }
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diff changeset
307 return rv;
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diff changeset
308 } catch (MalformedURLException ex) {
215
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
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diff changeset
309 throw new HgRemoteConnectionException("Bad URL", ex).setRemoteCommand("branches").setServerInfo(getLocation());
178
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diff changeset
310 } catch (IOException ex) {
215
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
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diff changeset
311 throw new HgRemoteConnectionException("Communication failure", ex).setRemoteCommand("branches").setServerInfo(getLocation());
178
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diff changeset
312 }
171
2c3e96674e2a Towards outgoing changes - initial detection logic, get connected with remote repo stub
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parents: 170
diff changeset
313 }
170
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
314
186
44a34baabea0 Clone refactored into a command. HgBundle needs means to control its lifecycle, to be deleted when no longer needed
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parents: 184
diff changeset
315 /*
202
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
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parents: 190
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316 * XXX need to describe behavior when roots arg is empty; our RepositoryComparator code currently returns empty lists when
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317 * no common elements found, which in turn means we need to query changes starting with NULL nodeid.
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318 *
186
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319 * WireProtocol wiki: roots = a list of the latest nodes on every service side changeset branch that both the client and server know about.
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320 *
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321 * Perhaps, shall be named 'changegroup'
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322
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323 * Changegroup:
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324 * http://mercurial.selenic.com/wiki/Merge
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325 * http://mercurial.selenic.com/wiki/WireProtocol
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326 *
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327 * according to latter, bundleformat data is sent through zlib
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328 * (there's no header like HG10?? with the server output, though,
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329 * as one may expect according to http://mercurial.selenic.com/wiki/BundleFormat)
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330 */
295
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331 public HgBundle getChanges(List<Nodeid> roots) throws HgRemoteConnectionException, HgInvalidFileException {
202
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332 List<Nodeid> _roots = roots.isEmpty() ? Collections.singletonList(Nodeid.NULL) : roots;
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333 StringBuilder sb = new StringBuilder(20 + _roots.size() * 41);
179
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334 sb.append("roots=");
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335 for (Nodeid n : _roots) {
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336 sb.append(n.toString());
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337 sb.append('+');
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338 }
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339 if (sb.charAt(sb.length() - 1) == '+') {
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340 // strip last space
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341 sb.setLength(sb.length() - 1);
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342 }
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343 try {
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344 URL u = new URL(url, url.getPath() + "?cmd=changegroup&" + sb.toString());
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345 HttpURLConnection c = setupConnection(u.openConnection());
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346 c.connect();
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347 if (debug) {
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348 dumpResponseHeader(u, c);
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349 }
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350 File tf = writeBundle(c.getInputStream(), false, "HG10GZ" /*didn't see any other that zip*/);
190
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351 if (debug) {
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352 System.out.printf("Wrote bundle %s for roots %s\n", tf, sb);
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353 }
186
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354 return getLookupHelper().loadBundle(tf);
215
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355 } catch (MalformedURLException ex) { // XXX in fact, this exception might be better to be re-thrown as RuntimeEx,
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356 // as there's little user can do about this issue (URLs are constructed by our code)
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357 throw new HgRemoteConnectionException("Bad URL", ex).setRemoteCommand("changegroup").setServerInfo(getLocation());
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358 } catch (IOException ex) {
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359 throw new HgRemoteConnectionException("Communication failure", ex).setRemoteCommand("changegroup").setServerInfo(getLocation());
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360 }
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361 }
186
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362
203
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363 @Override
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364 public String toString() {
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365 return getClass().getSimpleName() + '[' + getLocation() + ']';
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366 }
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367
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368 private HgLookup getLookupHelper() {
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369 if (lookupHelper == null) {
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370 lookupHelper = new HgLookup(sessionContext);
186
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371 }
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372 return lookupHelper;
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373 }
176
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374
177
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375 private HttpURLConnection setupConnection(URLConnection urlConnection) {
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376 urlConnection.setRequestProperty("User-Agent", "hg4j/0.5.0");
176
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377 urlConnection.addRequestProperty("Accept", "application/mercurial-0.1");
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378 if (authInfo != null) {
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379 urlConnection.addRequestProperty("Authorization", "Basic " + authInfo);
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380 }
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381 if (sslContext != null) {
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382 ((HttpsURLConnection) urlConnection).setSSLSocketFactory(sslContext.getSocketFactory());
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383 }
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384 return (HttpURLConnection) urlConnection;
176
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385 }
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386
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387 private void dumpResponseHeader(URL u, HttpURLConnection c) {
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388 System.out.printf("Query (%d bytes):%s\n", u.getQuery().length(), u.getQuery());
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389 System.out.println("Response headers:");
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390 final Map<String, List<String>> headerFields = c.getHeaderFields();
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391 for (String s : headerFields.keySet()) {
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392 System.out.printf("%s: %s\n", s, c.getHeaderField(s));
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393 }
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394 }
179
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395
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396 private static File writeBundle(InputStream is, boolean decompress, String header) throws IOException {
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397 InputStream zipStream = decompress ? new InflaterInputStream(is) : is;
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398 File tf = File.createTempFile("hg-bundle-", null);
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399 FileOutputStream fos = new FileOutputStream(tf);
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400 fos.write(header.getBytes());
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401 int r;
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402 byte[] buf = new byte[8*1024];
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403 while ((r = zipStream.read(buf)) != -1) {
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404 fos.write(buf, 0, r);
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405 }
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406 fos.close();
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407 zipStream.close();
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408 return tf;
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409 }
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410
178
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411
176
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412 public static final class Range {
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413 /**
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414 * Root of the range, earlier revision
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415 */
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416 public final Nodeid start;
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417 /**
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418 * Head of the range, later revision.
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419 */
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420 public final Nodeid end;
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421
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422 /**
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423 * @param from - root/base revision
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424 * @param to - head/tip revision
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425 */
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426 public Range(Nodeid from, Nodeid to) {
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427 start = from;
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428 end = to;
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429 }
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430 }
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ec1820f64d2b Complete incoming cmdline client, with both lite (revisions) and complete (full changeset) information dump
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431
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432 public static final class RemoteBranch {
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433 public final Nodeid head, root, p1, p2;
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434
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435 public RemoteBranch(Nodeid h, Nodeid r, Nodeid parent1, Nodeid parent2) {
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436 head = h;
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437 root = r;
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438 p1 = parent1;
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439 p2 = parent2;
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440 }
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441
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442 @Override
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443 public boolean equals(Object obj) {
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444 if (this == obj) {
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445 return true;
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446 }
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447 if (false == obj instanceof RemoteBranch) {
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448 return false;
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449 }
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450 RemoteBranch o = (RemoteBranch) obj;
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9fb50c04f03c Use Nodeid.isNull check instead of NULL.equals
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451 // in fact, p1 and p2 are not supposed to be null, ever (at least for RemoteBranch created from server output)
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452 return head.equals(o.head) && root.equals(o.root) && (p1 == null && o.p1 == null || p1.equals(o.p1)) && (p2 == null && o.p2 == null || p2.equals(o.p2));
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453 }
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454 }
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455 }