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Diffusion change parser for SVN.

Summary: there is a small possibility this works correctly

Test Plan:

Reviewers:

CC:
This commit is contained in:
epriestley 2011-03-11 14:13:23 -08:00
parent 452f4000ff
commit 48b5d6d025
10 changed files with 693 additions and 6 deletions

View file

@ -13,7 +13,7 @@ ALTER TABLE phabricator_worker.worker_task drop key (leaseOwner(16));
create table phabricator_repository.repository_path (
id int unsigned not null auto_increment primary key,
path varchar(512) not null,
path varchar(512) binary not null,
unique key (path)
);

View file

@ -296,6 +296,7 @@ phutil_register_library_map(array(
'PhabricatorRepositoryGitHubPostReceiveController' => 'applications/repository/controller/github-post-receive',
'PhabricatorRepositoryGitPullDaemon' => 'applications/repository/daemon/gitpull',
'PhabricatorRepositoryListController' => 'applications/repository/controller/list',
'PhabricatorRepositorySvnCommitChangeParserWorker' => 'applications/repository/worker/commitchangeparser/svn',
'PhabricatorRepositorySvnCommitDiscoveryDaemon' => 'applications/repository/daemon/commitdiscovery/svn',
'PhabricatorRepositorySvnCommitMessageParserWorker' => 'applications/repository/worker/commitmessageparser/svn',
'PhabricatorRepositoryType' => 'applications/repository/constants/repositorytype',
@ -578,17 +579,18 @@ phutil_register_library_map(array(
'PhabricatorRepositoryCommitParserWorker' => 'PhabricatorWorker',
'PhabricatorRepositoryCommitTaskDaemon' => 'PhabricatorRepositoryDaemon',
'PhabricatorRepositoryController' => 'PhabricatorController',
'PhabricatorRepositoryCreateController' => 'PhabricatorController',
'PhabricatorRepositoryCreateController' => 'PhabricatorRepositoryController',
'PhabricatorRepositoryDAO' => 'PhabricatorLiskDAO',
'PhabricatorRepositoryDaemon' => 'PhabricatorDaemon',
'PhabricatorRepositoryEditController' => 'PhabricatorController',
'PhabricatorRepositoryEditController' => 'PhabricatorRepositoryController',
'PhabricatorRepositoryGitCommitChangeParserWorker' => 'PhabricatorRepositoryCommitChangeParserWorker',
'PhabricatorRepositoryGitCommitDiscoveryDaemon' => 'PhabricatorRepositoryCommitDiscoveryDaemon',
'PhabricatorRepositoryGitCommitMessageParserWorker' => 'PhabricatorRepositoryCommitMessageParserWorker',
'PhabricatorRepositoryGitHubNotification' => 'PhabricatorRepositoryDAO',
'PhabricatorRepositoryGitHubPostReceiveController' => 'PhabricatorRepositoryController',
'PhabricatorRepositoryGitPullDaemon' => 'PhabricatorRepositoryDaemon',
'PhabricatorRepositoryListController' => 'PhabricatorController',
'PhabricatorRepositoryListController' => 'PhabricatorRepositoryController',
'PhabricatorRepositorySvnCommitChangeParserWorker' => 'PhabricatorRepositoryCommitChangeParserWorker',
'PhabricatorRepositorySvnCommitDiscoveryDaemon' => 'PhabricatorRepositoryCommitDiscoveryDaemon',
'PhabricatorRepositorySvnCommitMessageParserWorker' => 'PhabricatorRepositoryCommitMessageParserWorker',
'PhabricatorSearchBaseController' => 'PhabricatorController',

View file

@ -0,0 +1,13 @@
<?php
/**
* This file is automatically generated. Lint this module to rebuild it.
* @generated
*/
phutil_require_module('phabricator', 'view/base');
phutil_require_module('phabricator', 'view/control/table');
phutil_require_source('DiffusionCommitChangeTableView.php');

View file

@ -20,6 +20,7 @@ class PhabricatorRepository extends PhabricatorRepositoryDAO {
const TABLE_PATH = 'repository_path';
const TABLE_PATHCHANGE = 'repository_pathchange';
const TABLE_FILESYSTEM = 'repository_filesystem';
protected $phid;
protected $name;

View file

@ -30,7 +30,7 @@ abstract class PhabricatorRepositoryCommitChangeParserWorker
$missing_paths = array_keys($missing_paths);
if ($missing_paths) {
foreach (array_chunk($missing_paths, 512) as $path_chunk) {
foreach (array_chunk($missing_paths, 128) as $path_chunk) {
$sql = array();
foreach ($path_chunk as $path) {
$sql[] = qsprintf($conn_w, '(%s)', $path);
@ -52,7 +52,7 @@ abstract class PhabricatorRepositoryCommitChangeParserWorker
$conn_w = $repository->establishConnection('w');
$result_map = array();
foreach (array_chunk($paths, 512) as $path_chunk) {
foreach (array_chunk($paths, 128) as $path_chunk) {
$chunk_map = queryfx_all(
$conn_w,
'SELECT path, id FROM %T WHERE path IN (%Ls)',

View file

@ -48,6 +48,12 @@ class PhabricatorRepositoryGitCommitChangeParserWorker
explode("\t", $more_stuff),
array(null));
// Normalize the paths for consistency with the SVN workflow.
$src_path = '/'.$src_path;
if ($dst_path) {
$dst_path = '/'.$dst_path;
}
$old_mode = intval($old_mode, 8);
$new_mode = intval($new_mode, 8);

View file

@ -0,0 +1,639 @@
<?php
/*
* Copyright 2011 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
class PhabricatorRepositorySvnCommitChangeParserWorker
extends PhabricatorRepositoryCommitChangeParserWorker {
protected function parseCommit(
PhabricatorRepository $repository,
PhabricatorRepositoryCommit $commit) {
// PREAMBLE: This class is absurdly complicated because it is very difficult
// to get the information we need out of SVN. The actual data we need is:
//
// 1. Recursively, what were the affected paths?
// 2. For each affected path, is it a file or a directory?
// 3. How was each path affected (e.g. add, delete, move, copy)?
//
// We spend nearly all of our effort figuring out (1) and (2) because
// "svn log" is not recursive and does not give us file/directory
// information (that is, it will report a directory move as a single move,
// even if many thousands of paths are affected).
//
// Instead, we have to "svn ls -R" the location of each path in its previous
// life to figure out whether it is a file or a directory and exactly which
// recursive paths were affected if it was moved or copied. This is very
// complicated and has many special cases.
$uri = $repository->getDetail('remote-uri');
$svn_commit = $commit->getCommitIdentifier();
$callsign = $repository->getCallsign();
echo "Parsing r{$callsign}{$svn_commit}...\n";
// Pull the top-level path changes out of "svn log". This is pretty
// straightforward; just parse the XML log.
list($xml) = execx(
'svn log --verbose --xml --limit 1 --non-interactive %s@%d',
$uri,
$svn_commit);
$log = new SimpleXMLElement($xml);
$entry = $log->logentry[0];
if (!$entry->paths) {
// TODO: Explicitly mark this commit as broken elsewhere? This isn't
// supposed to happen but we have some cases like rE27 and rG935 in the
// Facebook repositories where things got all clowned up.
return;
}
$raw_paths = array();
foreach ($entry->paths->path as $path) {
$name = trim((string)$path);
$raw_paths[$name] = array(
'rawPath' => $name,
'rawTargetPath' => (string)$path['copyfrom-path'],
'rawChangeType' => (string)$path['action'],
'rawTargetCommit' => (string)$path['copyfrom-rev'],
);
}
$copied_or_moved_map = array();
$deleted_paths = array();
$add_paths = array();
foreach ($raw_paths as $path => $raw_info) {
if ($raw_info['rawTargetPath']) {
$copied_or_moved_map[$raw_info['rawTargetPath']][] = $raw_info;
}
switch ($raw_info['rawChangeType']) {
case 'D':
$deleted_paths[$path] = $raw_info;
break;
case 'A':
$add_paths[$path] = $raw_info;
break;
}
}
// If a path was deleted, we need to look in the repository history to
// figure out where the former valid location for it is so we can figure out
// if it was a directory or not, among other things.
$lookup_here = array();
foreach ($raw_paths as $path => $raw_info) {
if ($raw_info['rawChangeType'] != 'D') {
continue;
}
// If a change copies a directory and then deletes something from it,
// we need to look at the old location for information about the path, not
// the new location. This workflow is pretty ridiculous -- so much so that
// Trac gets it wrong. See Facebook rO6 for an example, if you happen to
// work at Facebook.
$parents = $this->expandAllParentPaths($path, $include_self = true);
foreach ($parents as $parent) {
if (isset($add_paths[$parent])) {
$relative_path = substr($path, strlen($parent));
$lookup_here[$path] = array(
'rawPath' => $add_paths[$parent]['rawTargetPath'].$relative_path,
'rawCommit' => $add_paths[$parent]['rawTargetCommit'],
);
continue 2;
}
}
// Otherwise we can just look at the previous revision.
$lookup_here[$path] = array(
'rawPath' => $path,
'rawCommit' => $svn_commit - 1,
);
}
$lookup = array();
foreach ($raw_paths as $path => $raw_info) {
if ($raw_info['rawChangeType'] == 'D') {
$lookup[$path] = $lookup_here[$path];
} else {
// For everything that wasn't deleted, we can just look it up directly.
$lookup[$path] = array(
'rawPath' => $path,
'rawCommit' => $svn_commit,
);
}
}
$path_file_types = $this->lookupPathFileTypes($repository, $lookup);
$effects = array();
$resolved_types = array();
$supplemental = array();
foreach ($raw_paths as $path => $raw_info) {
if (isset($resolved_types[$path])) {
$type = $resolved_types[$path];
} else {
switch ($raw_info['rawChangeType']) {
case 'D':
if (isset($copied_or_moved_map[$path])) {
if (count($copied_or_moved_map[$path]) > 1) {
$type = DifferentialChangeType::TYPE_MULTICOPY;
} else {
$type = DifferentialChangeType::TYPE_MOVE_AWAY;
}
} else {
$type = DifferentialChangeType::TYPE_DELETE;
$file_type = $path_file_types[$path];
if ($file_type == DifferentialChangeType::FILE_DIRECTORY) {
// Bad. Child paths aren't enumerated in "svn log" so we need
// to go fishing.
$list = $this->lookupRecursiveFileList(
$repository,
$lookup[$path]);
foreach ($list as $deleted_path => $path_file_type) {
$deleted_path = rtrim($path.'/'.$deleted_path, '/');
if (!empty($raw_paths[$deleted_path])) {
// We somehow learned about this deletion explicitly?
// TODO: Unclear how this is possible.
continue;
}
$effects[$deleted_path] = array(
'rawPath' => $deleted_path,
'rawTargetPath' => null,
'rawTargetCommit' => null,
'rawDirect' => true,
'changeType' => $type,
'fileType' => $path_file_type,
);
}
}
}
break;
case 'A':
$copy_from = $raw_info['rawTargetPath'];
$copy_rev = $raw_info['rawTargetCommit'];
if (!strlen($copy_from)) {
$type = DifferentialChangeType::TYPE_ADD;
} else {
if (isset($deleted_paths[$copy_from])) {
$type = DifferentialChangeType::TYPE_MOVE_HERE;
$other_type = DifferentialChangeType::TYPE_MOVE_AWAY;
} else {
$type = DifferentialChangeType::TYPE_COPY_HERE;
$other_type = DifferentialChangeType::TYPE_COPY_AWAY;
}
$source_file_type = $this->lookupPathFileType(
$repository,
$path,
array(
'rawPath' => $copy_from,
'rawCommit' => $copy_rev,
));
if ($source_file_type != DifferentialChangeType::FILE_DIRECTORY) {
if (isset($raw_paths[$copy_from])) {
break;
}
$effects[$copy_from] = array(
'rawPath' => $copy_from,
'rawTargetPath' => null,
'rawTargetCommit' => null,
'rawDirect' => false,
'changeType' => $other_type,
'fileType' => $source_file_type,
);
} else {
// ULTRADISASTER. We've added a directory which was copied
// or moved from somewhere else. This is the most complex and
// ridiculous case.
$list = $this->lookupRecursiveFileList(
$repository,
array(
'rawPath' => $copy_from,
'rawCommit' => $copy_rev,
));
foreach ($list as $from_path => $from_file_type) {
$full_from = rtrim($copy_from.'/'.$from_path, '/');
$full_to = rtrim($path.'/'.$from_path, '/');
if (empty($raw_paths[$full_to])) {
$effects[$full_to] = array(
'rawPath' => $full_to,
'rawTargetPath' => $full_from,
'rawTargetCommit' => $copy_rev,
'rawDirect' => true,
'changeType' => $type,
'fileType' => $from_file_type,
);
} else {
// This means we picked the file up explicitly elsewhere.
// If the file as modified, SVN will drop the copy
// information. We need to restore it.
$supplemental[$full_to]['rawTargetPath'] = $full_from;
$supplemental[$full_to]['rawTargetCommit'] = $copy_rev;
if ($raw_paths[$full_to]['rawChangeType'] == 'M') {
$resolved_types[$full_to] = $type;
}
}
if (empty($raw_paths[$full_from])) {
if ($other_type == DifferentialChangeType::TYPE_COPY_AWAY) {
$effects[$full_from] = array(
'rawPath' => $full_from,
'rawTargetPath' => null,
'rawTargetCommit' => null,
'rawDirect' => false,
'changeType' => $other_type,
'fileType' => $from_file_type,
);
}
}
}
}
}
break;
// This is "replaced", caused by "svn rm"-ing a file, putting another
// in its place, and then "svn add"-ing it. We do not distinguish
// between this and "M".
case 'R':
case 'M':
if (isset($copied_or_moved_map[$path])) {
$type = DifferentialChangeType::TYPE_COPY_AWAY;
} else {
$type = DifferentialChangeType::TYPE_CHANGE;
}
break;
}
}
$resolved_types[$path] = $type;
}
foreach ($raw_paths as $path => $raw_info) {
$raw_paths[$path]['changeType'] = $resolved_types[$path];
if (isset($supplemental[$path])) {
foreach ($supplemental[$path] as $key => $value) {
$raw_paths[$path][$key] = $value;
}
}
}
foreach ($raw_paths as $path => $raw_info) {
$effects[$path] = array(
'rawPath' => $path,
'rawTargetPath' => $raw_info['rawTargetPath'],
'rawTargetCommit' => $raw_info['rawTargetCommit'],
'rawDirect' => true,
'changeType' => $raw_info['changeType'],
'fileType' => $path_file_types[$path],
);
}
$parents = array();
foreach ($effects as $path => $effect) {
foreach ($this->expandAllParentPaths($path) as $parent_path) {
$parents[$parent_path] = true;
}
}
$parents = array_keys($parents);
foreach ($parents as $parent) {
if (isset($effects[$parent])) {
continue;
}
$effects[$parent] = array(
'rawPath' => $parent,
'rawTargetPath' => null,
'rawTargetCommit' => null,
'rawDirect' => false,
'changeType' => DifferentialChangeType::TYPE_CHILD,
'fileType' => DifferentialChangeType::FILE_DIRECTORY,
);
}
$lookup_paths = array();
foreach ($effects as $effect) {
$lookup_paths[$effect['rawPath']] = true;
if ($effect['rawTargetPath']) {
$lookup_paths[$effect['rawTargetPath']] = true;
}
}
$lookup_paths = array_keys($lookup_paths);
$lookup_commits = array();
foreach ($effects as $effect) {
if ($effect['rawTargetCommit']) {
$lookup_commits[$effect['rawTargetCommit']] = true;
}
}
$lookup_commits = array_keys($lookup_commits);
$path_map = $this->lookupOrCreatePaths($lookup_paths);
$commit_map = $this->lookupSvnCommits($repository, $lookup_commits);
$this->writeChanges($repository, $commit, $effects, $path_map, $commit_map);
$this->writeBrowse($repository, $commit, $effects, $path_map);
}
private function writeChanges(
PhabricatorRepository $repository,
PhabricatorRepositoryCommit $commit,
array $effects,
array $path_map,
array $commit_map) {
$conn_w = $repository->establishConnection('w');
$sql = array();
foreach ($effects as $effect) {
$sql[] = qsprintf(
$conn_w,
'(%d, %d, %d, %nd, %nd, %d, %d, %d, %d)',
$repository->getID(),
$path_map[$effect['rawPath']],
$commit->getID(),
$effect['rawTargetPath']
? $path_map[$effect['rawTargetPath']]
: null,
$effect['rawTargetCommit']
? $commit_map[$effect['rawTargetCommit']]
: null,
$effect['changeType'],
$effect['fileType'],
$effect['rawDirect']
? 1
: 0,
$commit->getCommitIdentifier());
}
queryfx(
$conn_w,
'DELETE FROM %T WHERE commitID = %d',
PhabricatorRepository::TABLE_PATHCHANGE,
$commit->getID());
foreach (array_chunk($sql, 512) as $sql_chunk) {
queryfx(
$conn_w,
'INSERT INTO %T
(repositoryID, pathID, commitID, targetPathID, targetCommitID,
changeType, fileType, isDirect, commitSequence)
VALUES %Q',
PhabricatorRepository::TABLE_PATHCHANGE,
implode(', ', $sql_chunk));
}
}
private function writeBrowse(
PhabricatorRepository $repository,
PhabricatorRepositoryCommit $commit,
array $effects,
array $path_map) {
$conn_w = $repository->establishConnection('w');
$sql = array();
foreach ($effects as $effect) {
$type = $effect['changeType'];
// Don't write COPY_AWAY to the filesystem table if it isn't a direct
// event. We do write CHILD.
if (!$effect['rawDirect']) {
if ($type == DifferentialChangeType::TYPE_COPY_AWAY) {
continue;
}
}
$existed = !DifferentialChangeType::isDeleteChangeType($type);
$sql[] = qsprintf(
$conn_w,
'(%d, %d, %d, %d, %d, %d)',
$repository->getID(),
$path_map[$this->getParentPath($effect['rawPath'])],
$commit->getCommitIdentifier(),
$path_map[$effect['rawPath']],
$existed
? 1
: 0,
$effect['fileType']);
}
queryfx(
$conn_w,
'DELETE FROM %T WHERE repositoryID = %d AND svnCommit = %d',
PhabricatorRepository::TABLE_FILESYSTEM,
$repository->getID(),
$commit->getCommitIdentifier());
foreach (array_chunk($sql, 512) as $sql_chunk) {
queryfx(
$conn_w,
'INSERT INTO %T
(repositoryID, parentID, svnCommit, pathID, existed, fileType)
VALUES %Q',
PhabricatorRepository::TABLE_FILESYSTEM,
implode(', ', $sql_chunk));
}
}
private function lookupSvnCommits(
PhabricatorRepository $repository,
array $commits) {
if (!$commits) {
return array();
}
$commit_table = new PhabricatorRepositoryCommit();
$commit_data = queryfx_all(
$commit_table->establishConnection('w'),
'SELECT id, commitIdentifier FROM %T WHERE commitIdentifier in (%Ld)',
$commit_table->getTableName(),
$commits);
return ipull($commit_data, 'id', 'commitIdentifier');
}
private function lookupPathFileType(
PhabricatorRepository $repository,
$path,
array $path_info) {
$result = $this->lookupPathFileTypes(
$repository,
array(
$path => $path_info,
));
return $result[$path];
}
private function lookupPathFileTypes(
PhabricatorRepository $repository,
array $paths) {
$repository_uri = $repository->getDetail('remote-uri');
$parents = array();
$path_mapping = array();
foreach ($paths as $path => $lookup) {
$parent = dirname($lookup['rawPath']);
$parent = ltrim($parent, '/');
$parent = $this->encodeSVNPath($parent);
$parent = $repository_uri.$parent.'@'.$lookup['rawCommit'];
$parent = escapeshellarg($parent);
$parents[$parent] = true;
$path_mapping[$parent][] = $path;
}
$result_map = array();
// Reverse this list so we can pop $path_mapping, as that's more efficient
// than shifting it. We need to associate these maps positionally because
// a change can copy the same source path from multiple revisions via
// "svn cp path@1 a; svn cp path@2 b;" and the XML output gives us no way
// to distinguish which revision we're looking at except based on its
// position in the document.
$all_paths = array_reverse(array_keys($parents));
foreach (array_chunk($all_paths, 64) as $path_chunk) {
list($raw_xml) = execx(
'svn --non-interactive --xml ls %C',
implode(' ', $path_chunk));
$xml = new SimpleXMLElement($raw_xml);
foreach ($xml->list as $list) {
$list_path = (string)$list['path'];
// SVN is a big mess. See Facebook rG8 (a revision which adds files
// with spaces in their names) for an example.
$list_path = rawurldecode($list_path);
if ($list_path == $repository_uri) {
$base = '/';
} else {
$base = substr($list_path, strlen($repository_uri));
}
$mapping = array_pop($path_mapping);
foreach ($list->entry as $entry) {
$val = $this->getFileTypeFromSVNKind($entry['kind']);
foreach ($mapping as $base_path) {
// rtrim() causes us to handle top-level directories correctly.
$key = rtrim($base_path, '/').'/'.$entry->name;
$result_map[$key] = $val;
}
}
}
}
foreach ($paths as $path => $lookup) {
if (empty($result_map[$path])) {
$result_map[$path] = DifferentialChangeType::FILE_DELETED;
}
}
return $result_map;
}
private function encodeSVNPath($path) {
$path = rawurlencode($path);
$path = str_replace('%2F', '/', $path);
return $path;
}
private function getFileTypeFromSVNKind($kind) {
$kind = (string)$kind;
switch ($kind) {
case 'dir': return DifferentialChangeType::FILE_DIRECTORY;
case 'file': return DifferentialChangeType::FILE_NORMAL;
default:
throw new Exception("Unknown SVN file kind '{$kind}'.");
}
}
private function lookupRecursiveFileList(
PhabricatorRepository $repository,
array $info) {
$path = $info['rawPath'];
$rev = $info['rawCommit'];
$path = $this->encodeSVNPath($path);
// TODO: This is a scalability nightmare.
list($raw_xml) = execx(
'svn --non-interactive --xml ls -R %s%s@%d',
$repository->getDetail('remote-uri'),
$path,
$rev);
$map = array();
$xml = new SimpleXMLElement($raw_xml);
foreach ($xml->list[0] as $entry) {
$key = (string)$entry->name;
$file_type = $this->getFileTypeFromSVNKind($entry['kind']);
$map[$key] = $file_type;
}
return $map;
}
private function getParentPath($path) {
$path = rtrim('/', $path);
$path = dirname($path);
$path = rtrim('/', $path);
if (!$path) {
$path = '/';
}
return $path;
}
private function expandAllParentPaths($path, $include_self = false) {
$parents = array();
if ($include_self) {
$parents[] = '/'.rtrim($path, '/');
}
$parts = explode('/', trim($path, '/'));
while (count($parts) >= 1) {
array_pop($parts);
$parents[] = '/'.implode('/', $parts);
}
return $parents;
}
}

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@ -0,0 +1,20 @@
<?php
/**
* This file is automatically generated. Lint this module to rebuild it.
* @generated
*/
phutil_require_module('phabricator', 'applications/differential/constants/changetype');
phutil_require_module('phabricator', 'applications/repository/storage/commit');
phutil_require_module('phabricator', 'applications/repository/storage/repository');
phutil_require_module('phabricator', 'applications/repository/worker/commitchangeparser/base');
phutil_require_module('phabricator', 'storage/qsprintf');
phutil_require_module('phabricator', 'storage/queryfx');
phutil_require_module('phutil', 'future/exec');
phutil_require_module('phutil', 'utils');
phutil_require_source('PhabricatorRepositorySvnCommitChangeParserWorker.php');

View file

@ -39,6 +39,11 @@ class PhabricatorRepositorySvnCommitMessageParserWorker
$message = (string)$entry->msg;
$this->updateCommitData($author, $message);
$task = new PhabricatorWorkerTask();
$task->setTaskClass('PhabricatorRepositorySvnCommitChangeParserWorker');
$task->setData($commit->getID());
$task->save();
}
}

View file

@ -7,6 +7,7 @@
phutil_require_module('phabricator', 'applications/repository/worker/commitmessageparser/base');
phutil_require_module('phabricator', 'infrastructure/daemon/workers/storage/task');
phutil_require_module('phutil', 'future/exec');