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phorge-phorge/src/applications/diffusion/engine/DiffusionCommitHookEngine.php
epriestley adcc4ee1db Add a "branches" rule for Herald commit rules
Summary:
Fixes T4195. Allows you to write a rule against a commit's branches.

This completes outstanding work on T4195.

Test Plan: Pushed to Git and Mercurial repositories and verified branches were selected correctly by examining transcripts.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T4195

Differential Revision: https://secure.phabricator.com/D7820
2013-12-26 10:40:16 -08:00

1006 lines
32 KiB
PHP

<?php
/**
* @task config Configuring the Hook Engine
* @task hook Hook Execution
* @task git Git Hooks
* @task hg Mercurial Hooks
* @task svn Subversion Hooks
* @task internal Internals
*/
final class DiffusionCommitHookEngine extends Phobject {
const ENV_USER = 'PHABRICATOR_USER';
const ENV_REMOTE_ADDRESS = 'PHABRICATOR_REMOTE_ADDRESS';
const ENV_REMOTE_PROTOCOL = 'PHABRICATOR_REMOTE_PROTOCOL';
const EMPTY_HASH = '0000000000000000000000000000000000000000';
private $viewer;
private $repository;
private $stdin;
private $subversionTransaction;
private $subversionRepository;
private $remoteAddress;
private $remoteProtocol;
private $transactionKey;
private $mercurialHook;
private $mercurialCommits = array();
private $gitCommits = array();
private $heraldViewerProjects;
/* -( Config )------------------------------------------------------------- */
public function setRemoteProtocol($remote_protocol) {
$this->remoteProtocol = $remote_protocol;
return $this;
}
public function getRemoteProtocol() {
return $this->remoteProtocol;
}
public function setRemoteAddress($remote_address) {
$this->remoteAddress = $remote_address;
return $this;
}
public function getRemoteAddress() {
return $this->remoteAddress;
}
private function getRemoteAddressForLog() {
// If whatever we have here isn't a valid IPv4 address, just store `null`.
// Older versions of PHP return `-1` on failure instead of `false`.
$remote_address = $this->getRemoteAddress();
$remote_address = max(0, ip2long($remote_address));
$remote_address = nonempty($remote_address, null);
return $remote_address;
}
private function getTransactionKey() {
if (!$this->transactionKey) {
$entropy = Filesystem::readRandomBytes(64);
$this->transactionKey = PhabricatorHash::digestForIndex($entropy);
}
return $this->transactionKey;
}
public function setSubversionTransactionInfo($transaction, $repository) {
$this->subversionTransaction = $transaction;
$this->subversionRepository = $repository;
return $this;
}
public function setStdin($stdin) {
$this->stdin = $stdin;
return $this;
}
public function getStdin() {
return $this->stdin;
}
public function setRepository(PhabricatorRepository $repository) {
$this->repository = $repository;
return $this;
}
public function getRepository() {
return $this->repository;
}
public function setViewer(PhabricatorUser $viewer) {
$this->viewer = $viewer;
return $this;
}
public function getViewer() {
return $this->viewer;
}
public function setMercurialHook($mercurial_hook) {
$this->mercurialHook = $mercurial_hook;
return $this;
}
public function getMercurialHook() {
return $this->mercurialHook;
}
/* -( Hook Execution )----------------------------------------------------- */
public function execute() {
$ref_updates = $this->findRefUpdates();
$all_updates = $ref_updates;
$caught = null;
try {
try {
$this->rejectDangerousChanges($ref_updates);
} catch (DiffusionCommitHookRejectException $ex) {
// If we're rejecting dangerous changes, flag everything that we've
// seen as rejected so it's clear that none of it was accepted.
foreach ($all_updates as $update) {
$update->setRejectCode(
PhabricatorRepositoryPushLog::REJECT_DANGEROUS);
}
throw $ex;
}
$this->applyHeraldRefRules($ref_updates, $all_updates);
$content_updates = $this->findContentUpdates($ref_updates);
$all_updates = array_merge($all_updates, $content_updates);
$this->applyHeraldContentRules($content_updates, $all_updates);
// TODO: Fire external hooks.
// If we make it this far, we're accepting these changes. Mark all the
// logs as accepted.
foreach ($all_updates as $update) {
$update->setRejectCode(PhabricatorRepositoryPushLog::REJECT_ACCEPT);
}
} catch (Exception $ex) {
// We'll throw this again in a minute, but we want to save all the logs
// first.
$caught = $ex;
}
// Save all the logs no matter what the outcome was.
foreach ($all_updates as $update) {
$update->save();
}
if ($caught) {
throw $caught;
}
return 0;
}
private function findRefUpdates() {
$type = $this->getRepository()->getVersionControlSystem();
switch ($type) {
case PhabricatorRepositoryType::REPOSITORY_TYPE_GIT:
return $this->findGitRefUpdates();
case PhabricatorRepositoryType::REPOSITORY_TYPE_MERCURIAL:
return $this->findMercurialRefUpdates();
case PhabricatorRepositoryType::REPOSITORY_TYPE_SVN:
return $this->findSubversionRefUpdates();
default:
throw new Exception(pht('Unsupported repository type "%s"!', $type));
}
}
private function rejectDangerousChanges(array $ref_updates) {
assert_instances_of($ref_updates, 'PhabricatorRepositoryPushLog');
$repository = $this->getRepository();
if ($repository->shouldAllowDangerousChanges()) {
return;
}
$flag_dangerous = PhabricatorRepositoryPushLog::CHANGEFLAG_DANGEROUS;
foreach ($ref_updates as $ref_update) {
if (!$ref_update->hasChangeFlags($flag_dangerous)) {
// This is not a dangerous change.
continue;
}
// We either have a branch deletion or a non fast-forward branch update.
// Format a message and reject the push.
$message = pht(
"DANGEROUS CHANGE: %s\n".
"Dangerous change protection is enabled for this repository.\n".
"Edit the repository configuration before making dangerous changes.",
$ref_update->getDangerousChangeDescription());
throw new DiffusionCommitHookRejectException($message);
}
}
private function findContentUpdates(array $ref_updates) {
assert_instances_of($ref_updates, 'PhabricatorRepositoryPushLog');
$type = $this->getRepository()->getVersionControlSystem();
switch ($type) {
case PhabricatorRepositoryType::REPOSITORY_TYPE_GIT:
return $this->findGitContentUpdates($ref_updates);
case PhabricatorRepositoryType::REPOSITORY_TYPE_MERCURIAL:
return $this->findMercurialContentUpdates($ref_updates);
case PhabricatorRepositoryType::REPOSITORY_TYPE_SVN:
return $this->findSubversionContentUpdates($ref_updates);
default:
throw new Exception(pht('Unsupported repository type "%s"!', $type));
}
}
/* -( Herald )------------------------------------------------------------- */
private function applyHeraldRefRules(
array $ref_updates,
array $all_updates) {
$this->applyHeraldRules(
$ref_updates,
new HeraldPreCommitRefAdapter(),
$all_updates);
}
private function applyHeraldContentRules(
array $content_updates,
array $all_updates) {
$this->applyHeraldRules(
$content_updates,
new HeraldPreCommitContentAdapter(),
$all_updates);
}
private function applyHeraldRules(
array $updates,
HeraldAdapter $adapter_template,
array $all_updates) {
if (!$updates) {
return;
}
$adapter_template->setHookEngine($this);
$engine = new HeraldEngine();
$rules = null;
$blocking_effect = null;
$blocked_update = null;
foreach ($updates as $update) {
$adapter = id(clone $adapter_template)
->setPushLog($update);
if ($rules === null) {
$rules = $engine->loadRulesForAdapter($adapter);
}
$effects = $engine->applyRules($rules, $adapter);
$engine->applyEffects($effects, $adapter, $rules);
$xscript = $engine->getTranscript();
if ($blocking_effect === null) {
foreach ($effects as $effect) {
if ($effect->getAction() == HeraldAdapter::ACTION_BLOCK) {
$blocking_effect = $effect;
$blocked_update = $update;
break;
}
}
}
}
if ($blocking_effect) {
foreach ($all_updates as $update) {
$update->setRejectCode(PhabricatorRepositoryPushLog::REJECT_HERALD);
$update->setRejectDetails($blocking_effect->getRulePHID());
}
$message = $blocking_effect->getTarget();
if (!strlen($message)) {
$message = pht('(None.)');
}
$rules = mpull($rules, null, 'getID');
$rule = idx($rules, $effect->getRuleID());
if ($rule && strlen($rule->getName())) {
$rule_name = $rule->getName();
} else {
$rule_name = pht('Unnamed Herald Rule');
}
$blocked_ref_name = coalesce(
$blocked_update->getRefName(),
$blocked_update->getRefNewShort());
$blocked_name = $blocked_update->getRefType().'/'.$blocked_ref_name;
throw new DiffusionCommitHookRejectException(
pht(
"This push was rejected by Herald push rule %s.\n".
"Change: %s\n".
" Rule: %s\n".
"Reason: %s",
'H'.$blocking_effect->getRuleID(),
$blocked_name,
$rule_name,
$message));
}
}
public function loadViewerProjectPHIDsForHerald() {
// This just caches the viewer's projects so we don't need to load them
// over and over again when applying Herald rules.
if ($this->heraldViewerProjects === null) {
$this->heraldViewerProjects = id(new PhabricatorProjectQuery())
->setViewer($this->getViewer())
->withMemberPHIDs(array($this->getViewer()->getPHID()))
->execute();
}
return mpull($this->heraldViewerProjects, 'getPHID');
}
/* -( Git )---------------------------------------------------------------- */
private function findGitRefUpdates() {
$ref_updates = array();
// First, parse stdin, which lists all the ref changes. The input looks
// like this:
//
// <old hash> <new hash> <ref>
$stdin = $this->getStdin();
$lines = phutil_split_lines($stdin, $retain_endings = false);
foreach ($lines as $line) {
$parts = explode(' ', $line, 3);
if (count($parts) != 3) {
throw new Exception(pht('Expected "old new ref", got "%s".', $line));
}
$ref_old = $parts[0];
$ref_new = $parts[1];
$ref_raw = $parts[2];
if (preg_match('(^refs/heads/)', $ref_raw)) {
$ref_type = PhabricatorRepositoryPushLog::REFTYPE_BRANCH;
$ref_raw = substr($ref_raw, strlen('refs/heads/'));
} else if (preg_match('(^refs/tags/)', $ref_raw)) {
$ref_type = PhabricatorRepositoryPushLog::REFTYPE_TAG;
$ref_raw = substr($ref_raw, strlen('refs/tags/'));
} else {
throw new Exception(
pht(
"Unable to identify the reftype of '%s'. Rejecting push.",
$ref_raw));
}
$ref_update = $this->newPushLog()
->setRefType($ref_type)
->setRefName($ref_raw)
->setRefOld($ref_old)
->setRefNew($ref_new);
$ref_updates[] = $ref_update;
}
$this->findGitMergeBases($ref_updates);
$this->findGitChangeFlags($ref_updates);
return $ref_updates;
}
private function findGitMergeBases(array $ref_updates) {
assert_instances_of($ref_updates, 'PhabricatorRepositoryPushLog');
$futures = array();
foreach ($ref_updates as $key => $ref_update) {
// If the old hash is "00000...", the ref is being created (either a new
// branch, or a new tag). If the new hash is "00000...", the ref is being
// deleted. If both are nonempty, the ref is being updated. For updates,
// we'll figure out the `merge-base` of the old and new objects here. This
// lets us reject non-FF changes cheaply; later, we'll figure out exactly
// which commits are new.
$ref_old = $ref_update->getRefOld();
$ref_new = $ref_update->getRefNew();
if (($ref_old === self::EMPTY_HASH) ||
($ref_new === self::EMPTY_HASH)) {
continue;
}
$futures[$key] = $this->getRepository()->getLocalCommandFuture(
'merge-base %s %s',
$ref_old,
$ref_new);
}
foreach (Futures($futures)->limit(8) as $key => $future) {
// If 'old' and 'new' have no common ancestors (for example, a force push
// which completely rewrites a ref), `git merge-base` will exit with
// an error and no output. It would be nice to find a positive test
// for this instead, but I couldn't immediately come up with one. See
// T4224. Assume this means there are no ancestors.
list($err, $stdout) = $future->resolve();
if ($err) {
$merge_base = null;
} else {
$merge_base = rtrim($stdout, "\n");
}
$ref_update = $ref_updates[$key];
$ref_update->setMergeBase($merge_base);
}
return $ref_updates;
}
private function findGitChangeFlags(array $ref_updates) {
assert_instances_of($ref_updates, 'PhabricatorRepositoryPushLog');
foreach ($ref_updates as $key => $ref_update) {
$ref_old = $ref_update->getRefOld();
$ref_new = $ref_update->getRefNew();
$ref_type = $ref_update->getRefType();
$ref_flags = 0;
$dangerous = null;
if ($ref_old === self::EMPTY_HASH) {
$ref_flags |= PhabricatorRepositoryPushLog::CHANGEFLAG_ADD;
} else if ($ref_new === self::EMPTY_HASH) {
$ref_flags |= PhabricatorRepositoryPushLog::CHANGEFLAG_DELETE;
if ($ref_type == PhabricatorRepositoryPushLog::REFTYPE_BRANCH) {
$ref_flags |= PhabricatorRepositoryPushLog::CHANGEFLAG_DANGEROUS;
$dangerous = pht(
"The change you're attempting to push deletes the branch '%s'.",
$ref_update->getRefName());
}
} else {
$merge_base = $ref_update->getMergeBase();
if ($merge_base == $ref_old) {
// This is a fast-forward update to an existing branch.
// These are safe.
$ref_flags |= PhabricatorRepositoryPushLog::CHANGEFLAG_APPEND;
} else {
$ref_flags |= PhabricatorRepositoryPushLog::CHANGEFLAG_REWRITE;
// For now, we don't consider deleting or moving tags to be a
// "dangerous" update. It's way harder to get wrong and should be easy
// to recover from once we have better logging. Only add the dangerous
// flag if this ref is a branch.
if ($ref_type == PhabricatorRepositoryPushLog::REFTYPE_BRANCH) {
$ref_flags |= PhabricatorRepositoryPushLog::CHANGEFLAG_DANGEROUS;
$dangerous = pht(
"The change you're attempting to push updates the branch '%s' ".
"from '%s' to '%s', but this is not a fast-forward. Pushes ".
"which rewrite published branch history are dangerous.",
$ref_update->getRefName(),
$ref_update->getRefOldShort(),
$ref_update->getRefNewShort());
}
}
}
$ref_update->setChangeFlags($ref_flags);
if ($dangerous !== null) {
$ref_update->attachDangerousChangeDescription($dangerous);
}
}
return $ref_updates;
}
private function findGitContentUpdates(array $ref_updates) {
$flag_delete = PhabricatorRepositoryPushLog::CHANGEFLAG_DELETE;
$futures = array();
foreach ($ref_updates as $key => $ref_update) {
if ($ref_update->hasChangeFlags($flag_delete)) {
// Deleting a branch or tag can never create any new commits.
continue;
}
// NOTE: This piece of magic finds all new commits, by walking backward
// from the new value to the value of *any* existing ref in the
// repository. Particularly, this will cover the cases of a new branch, a
// completely moved tag, etc.
$futures[$key] = $this->getRepository()->getLocalCommandFuture(
'log --format=%s %s --not --all',
'%H',
$ref_update->getRefNew());
}
$content_updates = array();
foreach (Futures($futures)->limit(8) as $key => $future) {
list($stdout) = $future->resolvex();
if (!strlen(trim($stdout))) {
// This change doesn't have any new commits. One common case of this
// is creating a new tag which points at an existing commit.
continue;
}
$commits = phutil_split_lines($stdout, $retain_newlines = false);
// If we're looking at a branch, mark all of the new commits as on that
// branch. It's only possible for these commits to be on updated branches,
// since any other branch heads are necessarily behind them.
$branch_name = null;
$ref_update = $ref_updates[$key];
$type_branch = PhabricatorRepositoryPushLog::REFTYPE_BRANCH;
if ($ref_update->getRefType() == $type_branch) {
$branch_name = $ref_update->getRefName();
}
foreach ($commits as $commit) {
if ($branch_name) {
$this->gitCommits[$commit][] = $branch_name;
}
$content_updates[$commit] = $this->newPushLog()
->setRefType(PhabricatorRepositoryPushLog::REFTYPE_COMMIT)
->setRefNew($commit)
->setChangeFlags(PhabricatorRepositoryPushLog::CHANGEFLAG_ADD);
}
}
return $content_updates;
}
/* -( Mercurial )---------------------------------------------------------- */
private function findMercurialRefUpdates() {
$hook = $this->getMercurialHook();
switch ($hook) {
case 'pretxnchangegroup':
return $this->findMercurialChangegroupRefUpdates();
case 'prepushkey':
return $this->findMercurialPushKeyRefUpdates();
default:
throw new Exception(pht('Unrecognized hook "%s"!', $hook));
}
}
private function findMercurialChangegroupRefUpdates() {
$hg_node = getenv('HG_NODE');
if (!$hg_node) {
throw new Exception(pht('Expected HG_NODE in environment!'));
}
// NOTE: We need to make sure this is passed to subprocesses, or they won't
// be able to see new commits. Mercurial uses this as a marker to determine
// whether the pending changes are visible or not.
$_ENV['HG_PENDING'] = getenv('HG_PENDING');
$repository = $this->getRepository();
$futures = array();
foreach (array('old', 'new') as $key) {
$futures[$key] = $repository->getLocalCommandFuture(
'heads --template %s',
'{node}\1{branches}\2');
}
// Wipe HG_PENDING out of the old environment so we see the pre-commit
// state of the repository.
$futures['old']->updateEnv('HG_PENDING', null);
$futures['commits'] = $repository->getLocalCommandFuture(
"log --rev %s --rev tip --template %s",
hgsprintf('%s', $hg_node),
'{node}\1{branches}\2');
// Resolve all of the futures now. We don't need the 'commits' future yet,
// but it simplifies the logic to just get it out of the way.
foreach (Futures($futures) as $future) {
$future->resolve();
}
list($commit_raw) = $futures['commits']->resolvex();
$commit_map = $this->parseMercurialCommits($commit_raw);
$this->mercurialCommits = $commit_map;
// NOTE: `hg heads` exits with an error code and no output if the repository
// has no heads. Most commonly this happens on a new repository. We know
// we can run `hg` successfully since the `hg log` above didn't error, so
// just ignore the error code.
list($err, $old_raw) = $futures['old']->resolve();
$old_refs = $this->parseMercurialHeads($old_raw);
list($err, $new_raw) = $futures['new']->resolve();
$new_refs = $this->parseMercurialHeads($new_raw);
$all_refs = array_keys($old_refs + $new_refs);
$ref_updates = array();
foreach ($all_refs as $ref) {
$old_heads = idx($old_refs, $ref, array());
$new_heads = idx($new_refs, $ref, array());
sort($old_heads);
sort($new_heads);
if ($old_heads === $new_heads) {
// No changes to this branch, so skip it.
continue;
}
if (!$new_heads) {
if ($old_heads) {
// It looks like this push deletes a branch, but that isn't possible
// in Mercurial, so something is going wrong here. Bail out.
throw new Exception(
pht(
'Mercurial repository has no new head for branch "%s" after '.
'push. This is unexpected; rejecting change.'));
} else {
// Obviously, this should never be possible either, as it makes
// no sense. Explode.
throw new Exception(
pht(
'Mercurial repository has no new or old heads for branch "%s" '.
'after push. This makes no sense; rejecting change.'));
}
}
$stray_heads = array();
if (count($old_heads) > 1) {
// HORRIBLE: In Mercurial, branches can have multiple heads. If the
// old branch had multiple heads, we need to figure out which new
// heads descend from which old heads, so we can tell whether you're
// actively creating new heads (dangerous) or just working in a
// repository that's already full of garbage (strongly discouraged but
// not as inherently dangerous). These cases should be very uncommon.
$dfutures = array();
foreach ($old_heads as $old_head) {
$dfutures[$old_head] = $repository->getLocalCommandFuture(
'log --rev %s --template %s',
hgsprintf('(descendants(%s) and head())', $old_head),
'{node}\1');
}
$head_map = array();
foreach (Futures($dfutures) as $future_head => $dfuture) {
list($stdout) = $dfuture->resolvex();
$head_map[$future_head] = array_filter(explode("\1", $stdout));
}
// Now, find all the new stray heads this push creates, if any. These
// are new heads which do not descend from the old heads.
$seen = array_fuse(array_mergev($head_map));
foreach ($new_heads as $new_head) {
if (empty($seen[$new_head])) {
$head_map[self::EMPTY_HASH][] = $new_head;
}
}
} else if ($old_heads) {
$head_map[head($old_heads)] = $new_heads;
} else {
$head_map[self::EMPTY_HASH] = $new_heads;
}
foreach ($head_map as $old_head => $child_heads) {
foreach ($child_heads as $new_head) {
if ($new_head === $old_head) {
continue;
}
$ref_flags = 0;
$dangerous = null;
if ($old_head == self::EMPTY_HASH) {
$ref_flags |= PhabricatorRepositoryPushLog::CHANGEFLAG_ADD;
} else {
$ref_flags |= PhabricatorRepositoryPushLog::CHANGEFLAG_APPEND;
}
$splits_existing_head = (count($child_heads) > 1);
$creates_duplicate_head = ($old_head == self::EMPTY_HASH) &&
(count($head_map) > 1);
if ($splits_existing_head || $creates_duplicate_head) {
$readable_child_heads = array();
foreach ($child_heads as $child_head) {
$readable_child_heads[] = substr($child_head, 0, 12);
}
$ref_flags |= PhabricatorRepositoryPushLog::CHANGEFLAG_DANGEROUS;
if ($splits_existing_head) {
// We're splitting an existing head into two or more heads.
// This is dangerous, and a super bad idea. Note that we're only
// raising this if you're actively splitting a branch head. If a
// head split in the past, we don't consider appends to it
// to be dangerous.
$dangerous = pht(
"The change you're attempting to push splits the head of ".
"branch '%s' into multiple heads: %s. This is inadvisable ".
"and dangerous.",
$ref,
implode(', ', $readable_child_heads));
} else {
// We're adding a second (or more) head to a branch. The new
// head is not a descendant of any old head.
$dangerous = pht(
"The change you're attempting to push creates new, divergent ".
"heads for the branch '%s': %s. This is inadvisable and ".
"dangerous.",
$ref,
implode(', ', $readable_child_heads));
}
}
$ref_update = $this->newPushLog()
->setRefType(PhabricatorRepositoryPushLog::REFTYPE_BRANCH)
->setRefName($ref)
->setRefOld($old_head)
->setRefNew($new_head)
->setChangeFlags($ref_flags);
if ($dangerous !== null) {
$ref_update->attachDangerousChangeDescription($dangerous);
}
$ref_updates[] = $ref_update;
}
}
}
return $ref_updates;
}
private function findMercurialPushKeyRefUpdates() {
$key_namespace = getenv('HG_NAMESPACE');
if ($key_namespace === 'phases') {
// Mercurial changes commit phases as part of normal push operations. We
// just ignore these, as they don't seem to represent anything
// interesting.
return array();
}
$key_name = getenv('HG_KEY');
$key_old = getenv('HG_OLD');
if (!strlen($key_old)) {
$key_old = null;
}
$key_new = getenv('HG_NEW');
if (!strlen($key_new)) {
$key_new = null;
}
if ($key_namespace !== 'bookmarks') {
throw new Exception(
pht(
"Unknown Mercurial key namespace '%s', with key '%s' (%s -> %s). ".
"Rejecting push.",
$key_namespace,
$key_name,
coalesce($key_old, pht('null')),
coalesce($key_new, pht('null'))));
}
if ($key_old === $key_new) {
// We get a callback when the bookmark doesn't change. Just ignore this,
// as it's a no-op.
return array();
}
$ref_flags = 0;
$merge_base = null;
if ($key_old === null) {
$ref_flags |= PhabricatorRepositoryPushLog::CHANGEFLAG_ADD;
} else if ($key_new === null) {
$ref_flags |= PhabricatorRepositoryPushLog::CHANGEFLAG_DELETE;
} else {
list($merge_base_raw) = $this->getRepository()->execxLocalCommand(
'log --template %s --rev %s',
'{node}',
hgsprintf('ancestor(%s, %s)', $key_old, $key_new));
if (strlen(trim($merge_base_raw))) {
$merge_base = trim($merge_base_raw);
}
if ($merge_base && ($merge_base === $key_old)) {
$ref_flags |= PhabricatorRepositoryPushLog::CHANGEFLAG_APPEND;
} else {
$ref_flags |= PhabricatorRepositoryPushLog::CHANGEFLAG_REWRITE;
}
}
$ref_update = $this->newPushLog()
->setRefType(PhabricatorRepositoryPushLog::REFTYPE_BOOKMARK)
->setRefName($key_name)
->setRefOld(coalesce($key_old, self::EMPTY_HASH))
->setRefNew(coalesce($key_new, self::EMPTY_HASH))
->setChangeFlags($ref_flags);
return array($ref_update);
}
private function findMercurialContentUpdates(array $ref_updates) {
$content_updates = array();
foreach ($this->mercurialCommits as $commit => $branches) {
$content_updates[$commit] = $this->newPushLog()
->setRefType(PhabricatorRepositoryPushLog::REFTYPE_COMMIT)
->setRefNew($commit)
->setChangeFlags(PhabricatorRepositoryPushLog::CHANGEFLAG_ADD);
}
return $content_updates;
}
private function parseMercurialCommits($raw) {
$commits_lines = explode("\2", $raw);
$commits_lines = array_filter($commits_lines);
$commit_map = array();
foreach ($commits_lines as $commit_line) {
list($node, $branches_raw) = explode("\1", $commit_line);
if (!strlen($branches_raw)) {
$branches = array('default');
} else {
$branches = explode(' ', $branches_raw);
}
$commit_map[$node] = $branches;
}
return $commit_map;
}
private function parseMercurialHeads($raw) {
$heads_map = $this->parseMercurialCommits($raw);
$heads = array();
foreach ($heads_map as $commit => $branches) {
foreach ($branches as $branch) {
$heads[$branch][] = $commit;
}
}
return $heads;
}
/* -( Subversion )--------------------------------------------------------- */
private function findSubversionRefUpdates() {
// Subversion doesn't have any kind of mutable ref metadata.
return array();
}
private function findSubversionContentUpdates(array $ref_updates) {
list($youngest) = execx(
'svnlook youngest %s',
$this->subversionRepository);
$ref_new = (int)$youngest + 1;
$ref_flags = 0;
$ref_flags |= PhabricatorRepositoryPushLog::CHANGEFLAG_ADD;
$ref_flags |= PhabricatorRepositoryPushLog::CHANGEFLAG_APPEND;
$ref_content = $this->newPushLog()
->setRefType(PhabricatorRepositoryPushLog::REFTYPE_COMMIT)
->setRefNew($ref_new)
->setChangeFlags($ref_flags);
return array($ref_content);
}
/* -( Internals )---------------------------------------------------------- */
private function newPushLog() {
// NOTE: By default, we create these with REJECT_BROKEN as the reject
// code. This indicates a broken hook, and covers the case where we
// encounter some unexpected exception and consequently reject the changes.
// NOTE: We generate PHIDs up front so the Herald transcripts can pick them
// up.
$phid = id(new PhabricatorRepositoryPushLog())->generatePHID();
return PhabricatorRepositoryPushLog::initializeNewLog($this->getViewer())
->setPHID($phid)
->attachRepository($this->getRepository())
->setRepositoryPHID($this->getRepository()->getPHID())
->setEpoch(time())
->setRemoteAddress($this->getRemoteAddressForLog())
->setRemoteProtocol($this->getRemoteProtocol())
->setTransactionKey($this->getTransactionKey())
->setRejectCode(PhabricatorRepositoryPushLog::REJECT_BROKEN)
->setRejectDetails(null);
}
public function loadChangesetsForCommit($identifier) {
$vcs = $this->getRepository()->getVersionControlSystem();
switch ($vcs) {
case PhabricatorRepositoryType::REPOSITORY_TYPE_GIT:
case PhabricatorRepositoryType::REPOSITORY_TYPE_MERCURIAL:
// For git and hg, we can use normal commands.
$drequest = DiffusionRequest::newFromDictionary(
array(
'repository' => $this->getRepository(),
'user' => $this->getViewer(),
'commit' => $identifier,
));
$raw_diff = DiffusionRawDiffQuery::newFromDiffusionRequest($drequest)
->setTimeout(5 * 60)
->setLinesOfContext(0)
->loadRawDiff();
break;
case PhabricatorRepositoryType::REPOSITORY_TYPE_SVN:
// TODO: This diff has 3 lines of context, which produces slightly
// incorrect "added file content" and "removed file content" results.
// This may also choke on binaries, but "svnlook diff" does not support
// the "--diff-cmd" flag.
// For subversion, we need to use `svnlook`.
list($raw_diff) = execx(
'svnlook diff -t %s %s',
$this->subversionTransaction,
$this->subversionRepository);
break;
default:
throw new Exception(pht("Unknown VCS '%s!'", $vcs));
}
$parser = new ArcanistDiffParser();
$changes = $parser->parseDiff($raw_diff);
$diff = DifferentialDiff::newFromRawChanges($changes);
return $diff->getChangesets();
}
public function loadCommitRefForCommit($identifier) {
$repository = $this->getRepository();
$vcs = $repository->getVersionControlSystem();
switch ($vcs) {
case PhabricatorRepositoryType::REPOSITORY_TYPE_GIT:
case PhabricatorRepositoryType::REPOSITORY_TYPE_MERCURIAL:
return id(new DiffusionLowLevelCommitQuery())
->setRepository($repository)
->withIdentifier($identifier)
->execute();
case PhabricatorRepositoryType::REPOSITORY_TYPE_SVN:
// For subversion, we need to use `svnlook`.
list($message) = execx(
'svnlook log -t %s %s',
$this->subversionTransaction,
$this->subversionRepository);
return id(new DiffusionCommitRef())
->setMessage($message);
break;
default:
throw new Exception(pht("Unknown VCS '%s!'", $vcs));
}
}
public function loadBranches($identifier) {
$repository = $this->getRepository();
$vcs = $repository->getVersionControlSystem();
switch ($vcs) {
case PhabricatorRepositoryType::REPOSITORY_TYPE_GIT:
return idx($this->gitCommits, $identifier, array());
case PhabricatorRepositoryType::REPOSITORY_TYPE_MERCURIAL:
return idx($this->mercurialCommits, $identifier, array());
case PhabricatorRepositoryType::REPOSITORY_TYPE_SVN:
// Subversion doesn't have branches.
return array();
}
}
}