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5a7327f6 TM |
1 | /* |
2 | * Copyright (C) 2007 Thiago Macieira <thiago@kde.org> | |
3 | * | |
4 | * This program is free software: you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation, either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
16 | */ | |
17 | ||
18 | #include "repository.h" | |
29b44c19 | 19 | #include "options.h" |
1c4df5aa | 20 | #include <QTextStream> |
b6ba9639 | 21 | #include <QDebug> |
374d4cd6 TM |
22 | #include <QLinkedList> |
23 | ||
24 | static const int maxSimultaneousProcesses = 100; | |
25 | ||
26 | class ProcessCache: QLinkedList<Repository *> | |
27 | { | |
28 | public: | |
29 | void touch(Repository *repo) | |
30 | { | |
31 | remove(repo); | |
32 | ||
33 | // if the cache is too big, remove from the front | |
34 | while (size() >= maxSimultaneousProcesses) | |
35 | takeFirst()->closeFastImport(); | |
36 | ||
37 | // append to the end | |
38 | append(repo); | |
39 | } | |
40 | ||
41 | inline void remove(Repository *repo) | |
42 | { | |
7abbe81c | 43 | #if QT_VERSION >= 0x040400 |
374d4cd6 | 44 | removeOne(repo); |
7abbe81c TM |
45 | #else |
46 | removeAll(repo); | |
47 | #endif | |
374d4cd6 TM |
48 | } |
49 | }; | |
50 | static ProcessCache processCache; | |
5a7327f6 TM |
51 | |
52 | Repository::Repository(const Rules::Repository &rule) | |
8b6c8bd6 | 53 | : name(rule.name), commitCount(0), outstandingTransactions(0), processHasStarted(false) |
5a7327f6 TM |
54 | { |
55 | foreach (Rules::Repository::Branch branchRule, rule.branches) { | |
56 | Branch branch; | |
e087596c | 57 | branch.created = 0; // not created |
5a7327f6 TM |
58 | |
59 | branches.insert(branchRule.name, branch); | |
60 | } | |
61 | ||
b6ba9639 | 62 | // create the default branch |
e087596c | 63 | branches["master"].created = 1; |
b6ba9639 | 64 | |
1a688729 | 65 | fastImport.setWorkingDirectory(name); |
5a7327f6 | 66 | } |
1c4df5aa TM |
67 | |
68 | Repository::~Repository() | |
374d4cd6 | 69 | { |
8b6c8bd6 | 70 | Q_ASSERT(outstandingTransactions == 0); |
374d4cd6 TM |
71 | closeFastImport(); |
72 | } | |
73 | ||
74 | void Repository::closeFastImport() | |
1c4df5aa | 75 | { |
3ffa3592 | 76 | if (fastImport.state() != QProcess::NotRunning) { |
ca192b2c TM |
77 | fastImport.write("checkpoint\n"); |
78 | fastImport.waitForBytesWritten(-1); | |
1c4df5aa | 79 | fastImport.closeWriteChannel(); |
ca192b2c TM |
80 | if (!fastImport.waitForFinished()) { |
81 | fastImport.terminate(); | |
82 | if (!fastImport.waitForFinished(200)) | |
83 | qWarning() << "git-fast-import for repository" << name << "did not die"; | |
84 | } | |
1c4df5aa | 85 | } |
374d4cd6 TM |
86 | processHasStarted = false; |
87 | processCache.remove(this); | |
1c4df5aa TM |
88 | } |
89 | ||
1a688729 TM |
90 | void Repository::reloadBranches() |
91 | { | |
c0a3eea3 TM |
92 | QProcess revParse; |
93 | revParse.setWorkingDirectory(name); | |
94 | revParse.start("git", QStringList() << "rev-parse" << "--symbolic" << "--branches"); | |
25e6c28e | 95 | revParse.waitForFinished(-1); |
1a688729 | 96 | |
c0a3eea3 | 97 | if (revParse.exitCode() == 0 && revParse.bytesAvailable()) { |
c0a3eea3 | 98 | while (revParse.canReadLine()) { |
b3b433a8 | 99 | QByteArray branchName = revParse.readLine().trimmed(); |
1a688729 | 100 | |
25e6c28e | 101 | //qDebug() << "Repo" << name << "reloaded branch" << branchName; |
c0a3eea3 TM |
102 | branches[branchName].created = 1; |
103 | fastImport.write("reset refs/heads/" + branchName + | |
25e6c28e TM |
104 | "\nfrom refs/heads/" + branchName + "^0\n\n" |
105 | "progress Branch refs/heads/" + branchName + " reloaded\n"); | |
1a688729 TM |
106 | } |
107 | } | |
108 | } | |
109 | ||
c338ae37 TM |
110 | void Repository::createBranch(const QString &branch, int revnum, |
111 | const QString &branchFrom, int) | |
112 | { | |
25e6c28e | 113 | startFastImport(); |
c338ae37 | 114 | if (!branches.contains(branch)) { |
7dd430d8 TM |
115 | qWarning() << branch << "is not a known branch in repository" << name << endl |
116 | << "Going to create it automatically"; | |
c338ae37 TM |
117 | } |
118 | ||
c338ae37 TM |
119 | QByteArray branchRef = branch.toUtf8(); |
120 | if (!branchRef.startsWith("refs/")) | |
121 | branchRef.prepend("refs/heads/"); | |
122 | ||
123 | Branch &br = branches[branch]; | |
e087596c | 124 | if (br.created && br.created != revnum) { |
c338ae37 TM |
125 | QByteArray backupBranch = branchRef + '_' + QByteArray::number(revnum); |
126 | qWarning() << branch << "already exists; backing up to" << backupBranch; | |
127 | ||
128 | fastImport.write("reset " + backupBranch + "\nfrom " + branchRef + "\n\n"); | |
129 | } | |
130 | ||
131 | // now create the branch | |
e087596c | 132 | br.created = revnum; |
c338ae37 TM |
133 | QByteArray branchFromRef = branchFrom.toUtf8(); |
134 | if (!branchFromRef.startsWith("refs/")) | |
135 | branchFromRef.prepend("refs/heads/"); | |
136 | ||
7dd430d8 TM |
137 | if (!branches.contains(branchFrom) || !branches.value(branchFrom).created) { |
138 | qCritical() << branch << "in repository" << name | |
139 | << "is branching from branch" << branchFrom | |
140 | << "but the latter doesn't exist. Can't continue."; | |
141 | exit(1); | |
142 | } | |
143 | ||
25e6c28e | 144 | fastImport.write("reset " + branchRef + "\nfrom " + branchFromRef + "\n\n" |
a5fd311b TM |
145 | "progress Branch " + branchRef + " created from " |
146 | + branchFromRef + " r" + QByteArray::number(revnum) + "\n\n"); | |
c338ae37 TM |
147 | } |
148 | ||
1c4df5aa TM |
149 | Repository::Transaction *Repository::newTransaction(const QString &branch, const QString &svnprefix, |
150 | int revnum) | |
151 | { | |
25e6c28e | 152 | startFastImport(); |
b6ba9639 | 153 | if (!branches.contains(branch)) { |
ff26f180 TM |
154 | qWarning() << branch << "is not a known branch in repository" << name << endl |
155 | << "Going to create it automatically"; | |
b6ba9639 | 156 | } |
1c4df5aa TM |
157 | |
158 | Transaction *txn = new Transaction; | |
159 | txn->repository = this; | |
160 | txn->branch = branch.toUtf8(); | |
161 | txn->svnprefix = svnprefix.toUtf8(); | |
162 | txn->datetime = 0; | |
163 | txn->revnum = revnum; | |
1c4df5aa | 164 | |
a812d0b1 | 165 | if ((++commitCount % 10000) == 0) |
b50b9285 TM |
166 | // write everything to disk every 10000 commits |
167 | fastImport.write("checkpoint\n"); | |
fc7b4bcc | 168 | if (outstandingTransactions++ == 0) |
8b6c8bd6 | 169 | lastmark = 1; // reset the mark number |
1a688729 TM |
170 | return txn; |
171 | } | |
172 | ||
a5fd311b TM |
173 | void Repository::createAnnotatedTag(const QString &ref, const QString &svnprefix, |
174 | int revnum, | |
175 | const QByteArray &author, uint dt, | |
176 | const QByteArray &log) | |
177 | { | |
178 | QString tagName = ref; | |
179 | if (tagName.startsWith("refs/tags/")) | |
180 | tagName.remove(0, 10); | |
181 | ||
182 | if (!annotatedTags.contains(tagName)) | |
183 | printf("Creating annotated tag %s (%s)\n", qPrintable(tagName), qPrintable(ref)); | |
184 | else | |
185 | printf("Re-creating annotated tag %s\n", qPrintable(tagName)); | |
186 | ||
187 | AnnotatedTag &tag = annotatedTags[tagName]; | |
188 | tag.supportingRef = ref; | |
189 | tag.svnprefix = svnprefix.toUtf8(); | |
190 | tag.revnum = revnum; | |
191 | tag.author = author; | |
192 | tag.log = log; | |
193 | tag.dt = dt; | |
194 | } | |
195 | ||
196 | void Repository::finalizeTags() | |
197 | { | |
198 | if (annotatedTags.isEmpty()) | |
199 | return; | |
200 | ||
201 | printf("Finalising tags for %s...", qPrintable(name)); | |
202 | startFastImport(); | |
203 | ||
204 | QHash<QString, AnnotatedTag>::ConstIterator it = annotatedTags.constBegin(); | |
205 | for ( ; it != annotatedTags.constEnd(); ++it) { | |
206 | const QString &tagName = it.key(); | |
207 | const AnnotatedTag &tag = it.value(); | |
208 | ||
209 | QByteArray message = tag.log; | |
210 | if (!message.endsWith('\n')) | |
211 | message += '\n'; | |
212 | if (Options::globalOptions->switches.value("metadata", true)) | |
213 | message += "\nsvn path=" + tag.svnprefix + "; revision=" + QByteArray::number(tag.revnum) + "\n"; | |
214 | ||
215 | { | |
216 | QByteArray branchRef = tag.supportingRef.toUtf8(); | |
217 | if (!branchRef.startsWith("refs/")) | |
218 | branchRef.prepend("refs/heads/"); | |
219 | ||
220 | QTextStream s(&fastImport); | |
221 | s << "progress Creating annotated tag " << tagName << " from ref " << branchRef << endl | |
222 | << "tag " << tagName << endl | |
223 | << "from " << branchRef << endl | |
224 | << "tagger " << QString::fromUtf8(tag.author) << ' ' << tag.dt << " -0000" << endl | |
225 | << "data " << message.length() << endl; | |
226 | } | |
227 | ||
228 | fastImport.write(message); | |
229 | fastImport.putChar('\n'); | |
230 | if (!fastImport.waitForBytesWritten(-1)) | |
231 | qFatal("Failed to write to process: %s", qPrintable(fastImport.errorString())); | |
232 | ||
233 | printf(" %s", qPrintable(tagName)); | |
234 | fflush(stdout); | |
235 | } | |
236 | ||
237 | while (fastImport.bytesToWrite()) | |
238 | if (!fastImport.waitForBytesWritten(-1)) | |
239 | qFatal("Failed to write to process: %s", qPrintable(fastImport.errorString())); | |
240 | printf("\n"); | |
241 | } | |
242 | ||
1a688729 TM |
243 | void Repository::startFastImport() |
244 | { | |
688d69ec | 245 | if (fastImport.state() == QProcess::NotRunning) { |
298d7968 TM |
246 | if (processHasStarted) |
247 | qFatal("git-fast-import has been started once and crashed?"); | |
248 | processHasStarted = true; | |
249 | ||
1c4df5aa | 250 | // start the process |
298d7968 TM |
251 | QString outputFile = name; |
252 | outputFile.replace('/', '_'); | |
253 | outputFile.prepend("log-"); | |
254 | fastImport.setStandardOutputFile(outputFile, QIODevice::Append); | |
f34275cf | 255 | fastImport.setProcessChannelMode(QProcess::MergedChannels); |
298d7968 | 256 | |
688d69ec | 257 | #ifndef DRY_RUN |
25e6c28e | 258 | fastImport.start("git", QStringList() << "fast-import"); |
688d69ec TM |
259 | #else |
260 | fastImport.start("/bin/cat", QStringList()); | |
261 | #endif | |
25e6c28e TM |
262 | |
263 | reloadBranches(); | |
688d69ec | 264 | } |
1c4df5aa TM |
265 | } |
266 | ||
267 | Repository::Transaction::~Transaction() | |
268 | { | |
8b6c8bd6 | 269 | --repository->outstandingTransactions; |
1c4df5aa TM |
270 | } |
271 | ||
272 | void Repository::Transaction::setAuthor(const QByteArray &a) | |
273 | { | |
274 | author = a; | |
275 | } | |
276 | ||
277 | void Repository::Transaction::setDateTime(uint dt) | |
278 | { | |
279 | datetime = dt; | |
280 | } | |
281 | ||
282 | void Repository::Transaction::setLog(const QByteArray &l) | |
283 | { | |
284 | log = l; | |
285 | } | |
286 | ||
287 | void Repository::Transaction::deleteFile(const QString &path) | |
288 | { | |
289 | deletedFiles.append(path); | |
290 | } | |
291 | ||
292 | QIODevice *Repository::Transaction::addFile(const QString &path, int mode, qint64 length) | |
293 | { | |
8b6c8bd6 | 294 | int mark = ++repository->lastmark; |
e3f0499d TM |
295 | |
296 | if (modifiedFiles.capacity() == 0) | |
297 | modifiedFiles.reserve(2048); | |
298 | modifiedFiles.append("M "); | |
299 | modifiedFiles.append(QByteArray::number(mode, 8)); | |
300 | modifiedFiles.append(" :"); | |
301 | modifiedFiles.append(QByteArray::number(mark)); | |
302 | modifiedFiles.append(' '); | |
303 | modifiedFiles.append(path.toUtf8()); | |
304 | modifiedFiles.append("\n"); | |
1c4df5aa | 305 | |
688d69ec | 306 | #ifndef DRY_RUN |
1c4df5aa | 307 | repository->fastImport.write("blob\nmark :"); |
e3f0499d | 308 | repository->fastImport.write(QByteArray::number(mark)); |
1c4df5aa TM |
309 | repository->fastImport.write("\ndata "); |
310 | repository->fastImport.write(QByteArray::number(length)); | |
311 | repository->fastImport.write("\n", 1); | |
688d69ec | 312 | #endif |
1c4df5aa | 313 | |
1c4df5aa TM |
314 | return &repository->fastImport; |
315 | } | |
316 | ||
317 | void Repository::Transaction::commit() | |
318 | { | |
374d4cd6 TM |
319 | processCache.touch(repository); |
320 | ||
1c4df5aa TM |
321 | // create the commit message |
322 | QByteArray message = log; | |
323 | if (!message.endsWith('\n')) | |
324 | message += '\n'; | |
29b44c19 AK |
325 | if (Options::globalOptions->switches.value("metadata", true)) |
326 | message += "\nsvn path=" + svnprefix + "; revision=" + QByteArray::number(revnum) + "\n"; | |
1c4df5aa TM |
327 | |
328 | { | |
329 | QByteArray branchRef = branch; | |
8d7b49e5 | 330 | if (!branchRef.startsWith("refs/")) |
1c4df5aa TM |
331 | branchRef.prepend("refs/heads/"); |
332 | ||
333 | QTextStream s(&repository->fastImport); | |
334 | s << "commit " << branchRef << endl; | |
f34275cf | 335 | s << "committer " << QString::fromUtf8(author) << ' ' << datetime << " -0000" << endl; |
1c4df5aa TM |
336 | |
337 | Branch &br = repository->branches[branch]; | |
bdc20860 | 338 | if (!br.created) { |
72da4610 | 339 | qWarning() << "Branch" << branch << "in repository" << repository->name << "doesn't exist at revision" |
bdc20860 TM |
340 | << revnum << "-- did you resume from the wrong revision?"; |
341 | br.created = revnum; | |
342 | } | |
1c4df5aa TM |
343 | |
344 | s << "data " << message.length() << endl; | |
345 | } | |
346 | ||
347 | repository->fastImport.write(message); | |
6b510c52 | 348 | repository->fastImport.putChar('\n'); |
1c4df5aa TM |
349 | |
350 | // write the file deletions | |
6b450d1d TM |
351 | if (deletedFiles.contains("")) |
352 | repository->fastImport.write("deleteall\n"); | |
353 | else | |
354 | foreach (QString df, deletedFiles) | |
355 | repository->fastImport.write("D " + df.toUtf8() + "\n"); | |
1c4df5aa TM |
356 | |
357 | // write the file modifications | |
e3f0499d | 358 | repository->fastImport.write(modifiedFiles); |
1c4df5aa | 359 | |
25e6c28e TM |
360 | repository->fastImport.write("\nprogress Commit #" + |
361 | QByteArray::number(repository->commitCount) + | |
362 | " branch " + branch + | |
363 | " = SVN r" + QByteArray::number(revnum) + "\n\n"); | |
364 | printf(" %d modifications to \"%s\"", | |
365 | deletedFiles.count() + modifiedFiles.count(), | |
366 | qPrintable(repository->name)); | |
1c4df5aa | 367 | |
25f3205a | 368 | while (repository->fastImport.bytesToWrite()) |
50cd32a4 | 369 | if (!repository->fastImport.waitForBytesWritten(-1)) |
25f3205a | 370 | qFatal("Failed to write to process: %s", qPrintable(repository->fastImport.errorString())); |
1c4df5aa | 371 | } |