Mercurial > hg4j

annotate src/org/tmatesoft/hg/repo/HgRemoteRepository.java @ 180:42fe9a94b9d0

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author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 06 Apr 2011 03:08:05 +0200
parents da426c2fe1ec
children cd3371670f0b
rev   line source
170
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1 /*
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2 * Copyright (c) 2011 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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18
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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.HgBadStateException;
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50 import org.tmatesoft.hg.core.HgException;
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51 import org.tmatesoft.hg.core.Nodeid;
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52
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53 /**
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54 * WORK IN PROGRESS, DO NOT USE
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55 *
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56 * @see http://mercurial.selenic.com/wiki/WireProtocol
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57 *
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58 * @author Artem Tikhomirov
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59 * @author TMate Software Ltd.
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60 */
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61 public class HgRemoteRepository {
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62
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63 private final URL url;
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64 private final SSLContext sslContext;
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65 private final String authInfo;
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66 private final boolean debug = Boolean.FALSE.booleanValue();
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67
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68 HgRemoteRepository(URL url) throws HgException {
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69 if (url == null) {
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70 throw new IllegalArgumentException();
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71 }
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72 this.url = url;
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73 if ("https".equals(url.getProtocol())) {
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74 try {
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75 sslContext = SSLContext.getInstance("SSL");
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76 class TrustEveryone implements X509TrustManager {
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77 public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
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78 System.out.println("checkClientTrusted " + authType);
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79 }
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80 public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
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81 System.out.println("checkServerTrusted" + authType);
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82 }
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83 public X509Certificate[] getAcceptedIssuers() {
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84 return new X509Certificate[0];
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85 }
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86 };
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87 sslContext.init(null, new TrustManager[] { new TrustEveryone() }, null);
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88 } catch (Exception ex) {
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89 throw new HgException(ex);
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90 }
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91 } else {
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92 sslContext = null;
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93 }
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94 if (url.getUserInfo() != null) {
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95 String ai = null;
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96 try {
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97 // Hack to get Base64-encoded credentials
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98 Preferences tempNode = Preferences.userRoot().node("xxx");
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99 tempNode.putByteArray("xxx", url.getUserInfo().getBytes());
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100 ai = tempNode.get("xxx", null);
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101 tempNode.removeNode();
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102 } catch (BackingStoreException ex) {
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103 ex.printStackTrace();
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104 // IGNORE
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105 }
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diff changeset
106 authInfo = ai;
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107 } else {
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108 authInfo = null;
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109 }
171
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110 }
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111
178
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112 public List<Nodeid> heads() throws HgException {
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113 try {
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114 URL u = new URL(url, url.getPath() + "?cmd=heads");
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115 HttpURLConnection c = setupConnection(u.openConnection());
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116 c.connect();
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117 if (debug) {
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118 dumpResponseHeader(u, c);
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119 }
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120 InputStreamReader is = new InputStreamReader(c.getInputStream(), "US-ASCII");
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121 StreamTokenizer st = new StreamTokenizer(is);
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122 st.ordinaryChars('0', '9');
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123 st.wordChars('0', '9');
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124 st.eolIsSignificant(false);
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125 LinkedList<Nodeid> parseResult = new LinkedList<Nodeid>();
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126 while (st.nextToken() != StreamTokenizer.TT_EOF) {
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127 parseResult.add(Nodeid.fromAscii(st.sval));
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128 }
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129 return parseResult;
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130 } catch (MalformedURLException ex) {
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131 throw new HgException(ex);
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132 } catch (IOException ex) {
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133 throw new HgException(ex);
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134 }
171
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135 }
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136
176
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137 public List<Nodeid> between(Nodeid tip, Nodeid base) throws HgException {
177
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138 Range r = new Range(base, tip);
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139 // XXX shall handle errors like no range key in the returned map, not sure how.
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140 return between(Collections.singletonList(r)).get(r);
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141 }
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142
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143 /**
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144 * @param ranges
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145 * @return map, where keys are input instances, values are corresponding server reply
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146 * @throws HgException
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147 */
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148 public Map<Range, List<Nodeid>> between(Collection<Range> ranges) throws HgException {
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149 if (ranges.isEmpty()) {
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150 return Collections.emptyMap();
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151 }
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152 // if fact, shall do other way round, this method shall send
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153 LinkedHashMap<Range, List<Nodeid>> rv = new LinkedHashMap<HgRemoteRepository.Range, List<Nodeid>>(ranges.size() * 4 / 3);
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154 StringBuilder sb = new StringBuilder(20 + ranges.size() * 82);
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155 sb.append("pairs=");
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156 for (Range r : ranges) {
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157 sb.append(r.end.toString());
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158 sb.append('-');
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159 sb.append(r.start.toString());
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160 sb.append('+');
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161 }
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162 if (sb.charAt(sb.length() - 1) == '+') {
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163 // strip last space
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164 sb.setLength(sb.length() - 1);
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165 }
176
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166 try {
177
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167 boolean usePOST = ranges.size() > 3;
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168 URL u = new URL(url, url.getPath() + "?cmd=between" + (usePOST ? "" : '&' + sb.toString()));
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169 HttpURLConnection c = setupConnection(u.openConnection());
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170 if (usePOST) {
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171 c.setRequestMethod("POST");
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172 c.setRequestProperty("Content-Length", String.valueOf(sb.length()/*nodeids are ASCII, bytes == characters */));
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173 c.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
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174 c.setDoOutput(true);
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175 c.connect();
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diff changeset
176 OutputStream os = c.getOutputStream();
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177 os.write(sb.toString().getBytes());
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178 os.flush();
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179 os.close();
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diff changeset
180 } else {
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181 c.connect();
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182 }
178
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diff changeset
183 if (debug) {
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184 System.out.printf("%d ranges, method:%s \n", ranges.size(), c.getRequestMethod());
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diff changeset
185 dumpResponseHeader(u, c);
176
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186 }
177
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diff changeset
187 InputStreamReader is = new InputStreamReader(c.getInputStream(), "US-ASCII");
176
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188 StreamTokenizer st = new StreamTokenizer(is);
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189 st.ordinaryChars('0', '9');
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190 st.wordChars('0', '9');
177
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191 st.eolIsSignificant(true);
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192 Iterator<Range> rangeItr = ranges.iterator();
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193 LinkedList<Nodeid> currRangeList = null;
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194 Range currRange = null;
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diff changeset
195 boolean possiblyEmptyNextLine = true;
176
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diff changeset
196 while (st.nextToken() != StreamTokenizer.TT_EOF) {
177
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diff changeset
197 if (st.ttype == StreamTokenizer.TT_EOL) {
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diff changeset
198 if (possiblyEmptyNextLine) {
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199 // newline follows newline;
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diff changeset
200 assert currRange == null;
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201 assert currRangeList == null;
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diff changeset
202 if (!rangeItr.hasNext()) {
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diff changeset
203 throw new HgBadStateException();
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204 }
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diff changeset
205 rv.put(rangeItr.next(), Collections.<Nodeid>emptyList());
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diff changeset
206 } else {
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diff changeset
207 if (currRange == null || currRangeList == null) {
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diff changeset
208 throw new HgBadStateException();
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209 }
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diff changeset
210 // indicate next range value is needed
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diff changeset
211 currRange = null;
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diff changeset
212 currRangeList = null;
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diff changeset
213 possiblyEmptyNextLine = true;
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214 }
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diff changeset
215 } else {
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diff changeset
216 possiblyEmptyNextLine = false;
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diff changeset
217 if (currRange == null) {
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diff changeset
218 if (!rangeItr.hasNext()) {
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diff changeset
219 throw new HgBadStateException();
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diff changeset
220 }
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diff changeset
221 currRange = rangeItr.next();
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diff changeset
222 currRangeList = new LinkedList<Nodeid>();
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diff changeset
223 rv.put(currRange, currRangeList);
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diff changeset
224 }
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diff changeset
225 Nodeid nid = Nodeid.fromAscii(st.sval);
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diff changeset
226 currRangeList.addLast(nid);
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diff changeset
227 }
176
a8df7162ec75 Extracting complete branch using remote between call to detect incoming changes is done. Arguments reorderd in remote repo to better match Hg server ideology, not my mental convenience
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diff changeset
228 }
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diff changeset
229 is.close();
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diff changeset
230 return rv;
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diff changeset
231 } catch (MalformedURLException ex) {
a8df7162ec75 Extracting complete branch using remote between call to detect incoming changes is done. Arguments reorderd in remote repo to better match Hg server ideology, not my mental convenience
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diff changeset
232 throw new HgException(ex);
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diff changeset
233 } catch (IOException ex) {
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diff changeset
234 throw new HgException(ex);
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diff changeset
235 }
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diff changeset
236 }
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diff changeset
237
178
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diff changeset
238 public List<RemoteBranch> branches(List<Nodeid> nodes) throws HgException {
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diff changeset
239 StringBuilder sb = new StringBuilder(20 + nodes.size() * 41);
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diff changeset
240 sb.append("nodes=");
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diff changeset
241 for (Nodeid n : nodes) {
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
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diff changeset
242 sb.append(n.toString());
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diff changeset
243 sb.append('+');
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diff changeset
244 }
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diff changeset
245 if (sb.charAt(sb.length() - 1) == '+') {
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
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diff changeset
246 // strip last space
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diff changeset
247 sb.setLength(sb.length() - 1);
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diff changeset
248 }
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diff changeset
249 try {
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diff changeset
250 URL u = new URL(url, url.getPath() + "?cmd=branches&" + sb.toString());
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diff changeset
251 HttpURLConnection c = setupConnection(u.openConnection());
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diff changeset
252 c.connect();
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diff changeset
253 if (debug) {
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diff changeset
254 dumpResponseHeader(u, c);
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
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diff changeset
255 }
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diff changeset
256 InputStreamReader is = new InputStreamReader(c.getInputStream(), "US-ASCII");
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
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diff changeset
257 StreamTokenizer st = new StreamTokenizer(is);
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
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diff changeset
258 st.ordinaryChars('0', '9');
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
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diff changeset
259 st.wordChars('0', '9');
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diff changeset
260 st.eolIsSignificant(false);
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parents: 177
diff changeset
261 ArrayList<Nodeid> parseResult = new ArrayList<Nodeid>(nodes.size() * 4);
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
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parents: 177
diff changeset
262 while (st.nextToken() != StreamTokenizer.TT_EOF) {
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
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diff changeset
263 parseResult.add(Nodeid.fromAscii(st.sval));
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
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diff changeset
264 }
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
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diff changeset
265 if (parseResult.size() != nodes.size() * 4) {
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
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diff changeset
266 throw new HgException(String.format("Bad number of nodeids in result (shall be factor 4), expected %d, got %d", nodes.size()*4, parseResult.size()));
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 177
diff changeset
267 }
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
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diff changeset
268 ArrayList<RemoteBranch> rv = new ArrayList<RemoteBranch>(nodes.size());
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
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diff changeset
269 for (int i = 0; i < nodes.size(); i++) {
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
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diff changeset
270 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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diff changeset
271 rv.add(rb);
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
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diff changeset
272 }
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
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diff changeset
273 return rv;
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diff changeset
274 } catch (MalformedURLException ex) {
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
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diff changeset
275 throw new HgException(ex);
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diff changeset
276 } catch (IOException ex) {
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diff changeset
277 throw new HgException(ex);
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
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parents: 177
diff changeset
278 }
171
2c3e96674e2a Towards outgoing changes - initial detection logic, get connected with remote repo stub
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parents: 170
diff changeset
279 }
170
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
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parents:
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280
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
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diff changeset
281 // WireProtocol wiki: roots = a list of the latest nodes on every service side changeset branch that both the client and server know about.
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
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diff changeset
282 public HgBundle getChanges(List<Nodeid> roots) throws HgException {
179
da426c2fe1ec Support for changegroup wire command
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diff changeset
283 StringBuilder sb = new StringBuilder(20 + roots.size() * 41);
da426c2fe1ec Support for changegroup wire command
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diff changeset
284 sb.append("roots=");
da426c2fe1ec Support for changegroup wire command
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diff changeset
285 for (Nodeid n : roots) {
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diff changeset
286 sb.append(n.toString());
da426c2fe1ec Support for changegroup wire command
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diff changeset
287 sb.append('+');
da426c2fe1ec Support for changegroup wire command
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diff changeset
288 }
da426c2fe1ec Support for changegroup wire command
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diff changeset
289 if (sb.charAt(sb.length() - 1) == '+') {
da426c2fe1ec Support for changegroup wire command
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parents: 178
diff changeset
290 // strip last space
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diff changeset
291 sb.setLength(sb.length() - 1);
da426c2fe1ec Support for changegroup wire command
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diff changeset
292 }
da426c2fe1ec Support for changegroup wire command
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diff changeset
293 try {
da426c2fe1ec Support for changegroup wire command
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diff changeset
294 URL u = new URL(url, url.getPath() + "?cmd=changegroup&" + sb.toString());
da426c2fe1ec Support for changegroup wire command
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diff changeset
295 HttpURLConnection c = setupConnection(u.openConnection());
da426c2fe1ec Support for changegroup wire command
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diff changeset
296 c.connect();
da426c2fe1ec Support for changegroup wire command
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diff changeset
297 if (debug) {
da426c2fe1ec Support for changegroup wire command
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diff changeset
298 dumpResponseHeader(u, c);
da426c2fe1ec Support for changegroup wire command
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diff changeset
299 }
da426c2fe1ec Support for changegroup wire command
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diff changeset
300 File tf = writeBundle(c.getInputStream(), false, "HG10GZ" /*didn't see any other that zip*/);
da426c2fe1ec Support for changegroup wire command
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diff changeset
301 return new HgLookup().loadBundle(tf);
da426c2fe1ec Support for changegroup wire command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 178
diff changeset
302 } catch (MalformedURLException ex) {
da426c2fe1ec Support for changegroup wire command
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parents: 178
diff changeset
303 throw new HgException(ex);
da426c2fe1ec Support for changegroup wire command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 178
diff changeset
304 } catch (IOException ex) {
da426c2fe1ec Support for changegroup wire command
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parents: 178
diff changeset
305 throw new HgException(ex);
da426c2fe1ec Support for changegroup wire command
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parents: 178
diff changeset
306 }
170
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
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parents:
diff changeset
307 }
176
a8df7162ec75 Extracting complete branch using remote between call to detect incoming changes is done. Arguments reorderd in remote repo to better match Hg server ideology, not my mental convenience
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diff changeset
308
177
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diff changeset
309 private HttpURLConnection setupConnection(URLConnection urlConnection) {
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diff changeset
310 urlConnection.setRequestProperty("User-Agent", "hg4j/0.5.0");
176
a8df7162ec75 Extracting complete branch using remote between call to detect incoming changes is done. Arguments reorderd in remote repo to better match Hg server ideology, not my mental convenience
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diff changeset
311 urlConnection.addRequestProperty("Accept", "application/mercurial-0.1");
a8df7162ec75 Extracting complete branch using remote between call to detect incoming changes is done. Arguments reorderd in remote repo to better match Hg server ideology, not my mental convenience
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diff changeset
312 if (authInfo != null) {
a8df7162ec75 Extracting complete branch using remote between call to detect incoming changes is done. Arguments reorderd in remote repo to better match Hg server ideology, not my mental convenience
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diff changeset
313 urlConnection.addRequestProperty("Authorization", "Basic " + authInfo);
a8df7162ec75 Extracting complete branch using remote between call to detect incoming changes is done. Arguments reorderd in remote repo to better match Hg server ideology, not my mental convenience
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diff changeset
314 }
a8df7162ec75 Extracting complete branch using remote between call to detect incoming changes is done. Arguments reorderd in remote repo to better match Hg server ideology, not my mental convenience
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parents: 172
diff changeset
315 if (sslContext != null) {
a8df7162ec75 Extracting complete branch using remote between call to detect incoming changes is done. Arguments reorderd in remote repo to better match Hg server ideology, not my mental convenience
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diff changeset
316 ((HttpsURLConnection) urlConnection).setSSLSocketFactory(sslContext.getSocketFactory());
a8df7162ec75 Extracting complete branch using remote between call to detect incoming changes is done. Arguments reorderd in remote repo to better match Hg server ideology, not my mental convenience
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parents: 172
diff changeset
317 }
177
e10225daface Use POST for long between queries. Batch between queries (pass multiple pairs to a server) to minimize number thereof
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diff changeset
318 return (HttpURLConnection) urlConnection;
176
a8df7162ec75 Extracting complete branch using remote between call to detect incoming changes is done. Arguments reorderd in remote repo to better match Hg server ideology, not my mental convenience
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diff changeset
319 }
171
2c3e96674e2a Towards outgoing changes - initial detection logic, get connected with remote repo stub
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parents: 170
diff changeset
320
178
62665d8f0686 Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
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diff changeset
321 private void dumpResponseHeader(URL u, HttpURLConnection c) {
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322 System.out.printf("Query (%d bytes):%s\n", u.getQuery().length(), u.getQuery());
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323 System.out.println("Response headers:");
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324 final Map<String, List<String>> headerFields = c.getHeaderFields();
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325 for (String s : headerFields.keySet()) {
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326 System.out.printf("%s: %s\n", s, c.getHeaderField(s));
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327 }
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328 }
179
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329
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330 private static File writeBundle(InputStream is, boolean decompress, String header) throws IOException {
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331 InputStream zipStream = decompress ? new InflaterInputStream(is) : is;
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332 File tf = File.createTempFile("hg-bundle-", null);
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333 FileOutputStream fos = new FileOutputStream(tf);
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334 fos.write(header.getBytes());
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335 int r;
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336 byte[] buf = new byte[8*1024];
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337 while ((r = zipStream.read(buf)) != -1) {
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338 fos.write(buf, 0, r);
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339 }
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340 fos.close();
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341 zipStream.close();
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342 return tf;
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343 }
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344
178
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345
176
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346 public static final class Range {
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347 /**
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348 * Root of the range, earlier revision
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349 */
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350 public final Nodeid start;
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351 /**
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352 * Head of the range, later revision.
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353 */
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354 public final Nodeid end;
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355
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356 /**
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357 * @param from - root/base revision
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358 * @param to - head/tip revision
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359 */
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360 public Range(Nodeid from, Nodeid to) {
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361 start = from;
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362 end = to;
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363 }
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364 }
171
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365 public static final class RemoteBranch {
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366 public final Nodeid head, root, p1, p2;
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367
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368 public RemoteBranch(Nodeid h, Nodeid r, Nodeid parent1, Nodeid parent2) {
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369 head = h;
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370 root = r;
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371 p1 = parent1;
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372 p2 = parent2;
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373 }
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374
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375 @Override
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376 public boolean equals(Object obj) {
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377 if (this == obj) {
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378 return true;
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379 }
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380 if (false == obj instanceof RemoteBranch) {
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381 return false;
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382 }
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383 RemoteBranch o = (RemoteBranch) obj;
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384 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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385 }
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386 }
170
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387 }