import logging
from itertools import chain
from cPickle import dumps
import re
import os
import bson
import tg
from pylons import g,c
from ming.base import Object
from ming.orm import mapper, session, ThreadLocalORMSession
from allura.lib import utils
from allura.lib import helpers as h
from allura.model.repo import CommitDoc, TreeDoc, TreesDoc, DiffInfoDoc
from allura.model.repo import LastCommitDoc, CommitRunDoc
from allura.model.repo import Commit, Tree, LastCommit, ModelCache
from allura.model.index import ArtifactReferenceDoc, ShortlinkDoc
log = logging.getLogger(__name__)
QSIZE=100
def refresh_repo(repo, all_commits=False, notify=True):
all_commit_ids = commit_ids = list(repo.all_commit_ids())
if not commit_ids:
# the repo is empty, no need to continue
return
new_commit_ids = unknown_commit_ids(commit_ids)
stats_log = h.log_action(log, 'commit')
for ci in new_commit_ids:
stats_log.info(
'',
meta=dict(
module='scm-%s' % repo.repo_id,
read='0'))
if not all_commits:
# Skip commits that are already in the DB
commit_ids = new_commit_ids
log.info('Refreshing %d commits on %s', len(commit_ids), repo.full_fs_path)
# Refresh commits
seen = set()
for i, oid in enumerate(commit_ids):
repo.refresh_commit_info(oid, seen, not all_commits)
if (i+1) % 100 == 0:
log.info('Refresh commit info %d: %s', (i+1), oid)
refresh_commit_repos(all_commit_ids, repo)
# Refresh child references
for i, oid in enumerate(commit_ids):
ci = CommitDoc.m.find(dict(_id=oid), validate=False).next()
refresh_children(ci)
if (i+1) % 100 == 0:
log.info('Refresh child info %d for parents of %s', (i+1), ci._id)
if repo._refresh_precompute:
# Refresh commit runs
commit_run_ids = commit_ids
# Check if the CommitRuns for the repo are in a good state by checking for
# a CommitRunDoc that contains the last known commit. If there isn't one,
# the CommitRuns for this repo are in a bad state - rebuild them entirely.
if commit_run_ids != all_commit_ids:
last_commit = last_known_commit_id(all_commit_ids, new_commit_ids)
log.info('Last known commit id: %s', last_commit)
if not CommitRunDoc.m.find(dict(commit_ids=last_commit)).count():
log.info('CommitRun incomplete, rebuilding with all commits')
commit_run_ids = all_commit_ids
log.info('Starting CommitRunBuilder for %s', repo.full_fs_path)
rb = CommitRunBuilder(commit_run_ids)
rb.run()
rb.cleanup()
log.info('Finished CommitRunBuilder for %s', repo.full_fs_path)
# Refresh trees
# Like diffs below, pre-computing trees for some SCMs is too expensive,
# so we skip it here, then do it on-demand later.
if repo._refresh_precompute:
cache = {}
for i, oid in enumerate(commit_ids):
ci = CommitDoc.m.find(dict(_id=oid), validate=False).next()
cache = refresh_commit_trees(ci, cache)
if (i+1) % 100 == 0:
log.info('Refresh commit trees %d: %s', (i+1), ci._id)
# Compute diffs
cache = {}
# For some SCMs, we don't want to pre-compute the diffs because that
# would be too expensive, so we skip them here and do them on-demand
# with caching.
if repo._refresh_precompute:
for i, oid in enumerate(commit_ids):
ci = CommitDoc.m.find(dict(_id=oid), validate=False).next()
compute_diffs(repo._id, cache, ci)
if (i+1) % 100 == 0:
log.info('Compute diffs %d: %s', (i+1), ci._id)
if repo._refresh_precompute:
cache = ModelCache()
for i, oid in enumerate(reversed(commit_ids)):
ci = cache.get(Commit, dict(_id=oid))
ci.set_context(repo)
compute_lcds(ci, cache)
ThreadLocalORMSession.flush_all()
if (i+1) % 100 == 0:
log.info('Compute last commit info %d: %s', (i+1), ci._id)
log.info('Refresh complete for %s', repo.full_fs_path)
g.post_event(
'repo_refreshed',
commit_number=len(commit_ids),
new=bool(new_commit_ids))
# Send notifications
if notify:
send_notifications(repo, commit_ids)
def refresh_commit_trees(ci, cache):
'''Refresh the list of trees included withn a commit'''
if ci.tree_id is None: return cache
trees_doc = TreesDoc(dict(
_id=ci._id,
tree_ids = list(trees(ci.tree_id, cache))))
trees_doc.m.save(safe=False)
new_cache = dict(
(oid, cache[oid])
for oid in trees_doc.tree_ids)
return new_cache
def refresh_commit_repos(all_commit_ids, repo):
'''Refresh the list of repositories within which a set of commits are
contained'''
for oids in utils.chunked_iter(all_commit_ids, QSIZE):
for ci in CommitDoc.m.find(dict(
_id={'$in':list(oids)},
repo_ids={'$ne': repo._id})):
oid = ci._id
ci.repo_ids.append(repo._id)
index_id = 'allura.model.repo.Commit#' + oid
ref = ArtifactReferenceDoc(dict(
_id=index_id,
artifact_reference=dict(
cls=bson.Binary(dumps(Commit)),
project_id=repo.app.config.project_id,
app_config_id=repo.app.config._id,
artifact_id=oid),
references=[]))
link0 = ShortlinkDoc(dict(
_id=bson.ObjectId(),
ref_id=index_id,
project_id=repo.app.config.project_id,
app_config_id=repo.app.config._id,
link=repo.shorthand_for_commit(oid)[1:-1],
url=repo.url_for_commit(oid)))
# Always create a link for the full commit ID
link1 = ShortlinkDoc(dict(
_id=bson.ObjectId(),
ref_id=index_id,
project_id=repo.app.config.project_id,
app_config_id=repo.app.config._id,
link=oid,
url=repo.url_for_commit(oid)))
ci.m.save(safe=False, validate=False)
ref.m.save(safe=False, validate=False)
link0.m.save(safe=False, validate=False)
link1.m.save(safe=False, validate=False)
def refresh_children(ci):
'''Refresh the list of children of the given commit'''
CommitDoc.m.update_partial(
dict(_id={'$in': ci.parent_ids}),
{'$addToSet': dict(child_ids=ci._id)},
multi=True)
class CommitRunBuilder(object):
'''Class used to build up linear runs of single-parent commits'''
def __init__(self, commit_ids):
self.commit_ids = commit_ids
self.run_index = {} # by commit ID
self.runs = {} # by run ID
self.reasons = {} # reasons to stop merging runs
def run(self):
'''Build up the runs'''
for oids in utils.chunked_iter(self.commit_ids, QSIZE):
oids = list(oids)
for ci in CommitDoc.m.find(dict(_id={'$in':oids})):
if ci._id in self.run_index: continue
self.run_index[ci._id] = ci._id
self.runs[ci._id] = CommitRunDoc(dict(
_id=ci._id,
parent_commit_ids=ci.parent_ids,
commit_ids=[ci._id],
commit_times=[ci.authored['date']]))
self.merge_runs()
log.info('%d runs', len(self.runs))
for rid, run in sorted(self.runs.items()):
log.info('%32s: %r', self.reasons.get(rid, 'none'), run._id)
for run in self.runs.itervalues():
run.m.save()
return self.runs
def _all_runs(self):
'''Find all runs containing this builder's commit IDs'''
runs = {}
for oids in utils.chunked_iter(self.commit_ids, QSIZE):
oids = list(oids)
for run in CommitRunDoc.m.find(dict(commit_ids={'$in': oids})):
runs[run._id] = run
for run in CommitRunDoc.m.find(dict(parent_commit_ids={'$in': oids})):
runs[run._id] = run
seen_run_ids = set()
runs = runs.values()
while runs:
run = runs.pop()
if run._id in seen_run_ids: continue
seen_run_ids.add(run._id)
yield run
for run in CommitRunDoc.m.find(
dict(commit_ids={'$in':run.parent_commit_ids})):
runs.append(run)
def cleanup(self):
'''Delete non-maximal runs and merge any new runs with existing runs'''
runs = dict(
(run['commit_ids'][0], run)
for run in self._all_runs())
for rid, run in runs.items():
p_cis = run['parent_commit_ids']
if len(p_cis) != 1: continue
parent_run = runs.get(p_cis[0], None)
if parent_run is None: continue
run['commit_ids'] += parent_run['commit_ids']
run['commit_times'] += parent_run['commit_times']
run['parent_commit_ids'] = parent_run['parent_commit_ids']
run.m.save()
parent_run.m.delete()
del runs[p_cis[0]]
for run1 in runs.values():
# if run1 is a subset of another run, delete it
if CommitRunDoc.m.find(dict(commit_ids={'$all': run1.commit_ids},
_id={'$ne': run1._id})).count():
log.info('... delete %r (subset of another run)', run1)
run1.m.delete()
continue
for run2 in CommitRunDoc.m.find(dict(
commit_ids=run1.commit_ids[0])):
if run1._id == run2._id: continue
log.info('... delete %r (part of %r)', run2, run1)
run2.m.delete()
def merge_runs(self):
'''Find partial runs that may be merged and merge them'''
while True:
for run_id, run in self.runs.iteritems():
if len(run.parent_commit_ids) != 1:
self.reasons[run_id] = '%d parents' % len(run.parent_commit_ids)
continue
p_oid = run.parent_commit_ids[0]
p_run_id = self.run_index.get(p_oid)
if p_run_id is None:
self.reasons[run_id] = 'parent commit not found'
continue
p_run = self.runs.get(p_run_id)
if p_run is None:
self.reasons[run_id] = 'parent run not found'
continue
if p_run.commit_ids[0] != p_oid:
self.reasons[run_id] = 'parent does not start with parent commit'
continue
run.commit_ids += p_run.commit_ids
run.commit_times += p_run.commit_times
run.parent_commit_ids = p_run.parent_commit_ids
for oid in p_run.commit_ids:
self.run_index[oid] = run_id
break
else:
break
del self.runs[p_run_id]
def trees(id, cache):
'''Recursively generate the list of trees contained within a given tree ID'''
yield id
entries = cache.get(id, None)
if entries is None:
t = TreeDoc.m.get(_id=id)
entries = [ o.id for o in t.tree_ids ]
cache[id] = entries
for i in entries:
for x in trees(i, cache):
yield x
def unknown_commit_ids(all_commit_ids):
'''filter out all commit ids that have already been cached'''
result = []
for chunk in utils.chunked_iter(all_commit_ids, QSIZE):
chunk = list(chunk)
q = CommitDoc.m.find(dict(_id={'$in':chunk}))
known_commit_ids = set(ci._id for ci in q)
result += [ oid for oid in chunk if oid not in known_commit_ids ]
return result
def compute_diffs(repo_id, tree_cache, rhs_ci):
'''compute simple differences between a commit and its first parent'''
if rhs_ci.tree_id is None: return tree_cache
def _update_cache(lhs_tree_ids, rhs_tree_ids):
# crazy cache logic that I'm not certain I understand
new_tree_ids = [
tid for tid in chain(lhs_tree_ids, rhs_tree_ids)
if tid not in tree_cache ]
tree_index = dict(
(t._id, t) for t in TreeDoc.m.find(dict(_id={'$in': new_tree_ids}),validate=False))
tree_index.update(tree_cache)
rhs_tree_ids_set = set(rhs_tree_ids)
tree_cache.clear()
tree_cache.update(
(id, t) for id,t in tree_index.iteritems() if id in rhs_tree_ids_set)
return tree_index
empty_tree = Object(_id=None, tree_ids=[], blob_ids=[], other_ids=[])
commit_info = get_commit_info(rhs_ci)
differences = []
rhs_treesdoc = TreesDoc.m.get(_id=rhs_ci._id)
if not rhs_treesdoc:
# FIXME: These sometimes don't exist for unknown reasons; they should be auto-gen'ed
log.error('Missing TreesDoc: %s', rhs_ci)
return tree_cache
for lhs_cid in rhs_ci.parent_ids:
lhs_ci = CommitDoc.m.get(_id=lhs_cid)
if lhs_ci is None:
log.error('Commit ID referenced as parent but not found: %s parent of %s', lhs_cid, rhs_ci)
continue
lhs_treesdoc = TreesDoc.m.get(_id=lhs_cid)
if not lhs_treesdoc:
# FIXME: These sometimes don't exist for unknown reasons; they should be auto-gen'ed
log.error('Missing TreesDoc: %s', rhs_ci)
continue
tree_index = _update_cache(lhs_treesdoc.tree_ids, rhs_treesdoc.tree_ids)
rhs_tree = tree_index[rhs_ci.tree_id]
lhs_tree = tree_index.get(lhs_ci.tree_id, empty_tree)
for name, lhs_id, rhs_id in _diff_trees(lhs_tree, rhs_tree, tree_index):
differences.append(
dict(name=name, lhs_id=lhs_id, rhs_id=rhs_id))
if not rhs_ci.parent_ids:
# no parents, so everything in rhs is new
tree_index = _update_cache([], rhs_treesdoc.tree_ids)
rhs_tree = tree_index[rhs_ci.tree_id]
for name, lhs_id, rhs_id in _diff_trees(empty_tree, rhs_tree, tree_index):
differences.append(
dict(name=name, lhs_id=lhs_id, rhs_id=rhs_id))
# Build the diffinfo
di = DiffInfoDoc(dict(
_id=rhs_ci._id,
differences=differences))
di.m.save()
return tree_cache
def send_notifications(repo, commit_ids):
'''Create appropriate notification and feed objects for a refresh'''
from allura.model import Feed, Notification
commit_msgs = []
base_url = tg.config.get('base_url', 'sourceforge.net')
for oids in utils.chunked_iter(commit_ids, QSIZE):
chunk = list(oids)
index = dict(
(doc._id, doc)
for doc in Commit.query.find(dict(_id={'$in':chunk})))
for oid in chunk:
ci = index[oid]
href = repo.url_for_commit(oid)
summary = _summarize(ci.message)
Feed.post(
repo, title='New commit',
description='%s<br><a href="%s">View Changes</a>' % (
summary, href),
author_link=ci.author_url,
author_name=ci.authored.name)
branches = repo.symbolics_for_commit(ci)[0]
commit_msgs.append('%s: %s by %s %s%s' % (
",".join(b for b in branches),
summary, ci.authored.name, base_url, ci.url()))
if commit_msgs:
if len(commit_msgs) > 1:
subject = '%d new commits to %s %s' % (
len(commit_msgs), repo.app.project.name, repo.app.config.options.mount_label)
text='\n\n'.join(commit_msgs)
else:
subject = '%s committed to %s %s: %s' % (
ci.authored.name,
repo.app.project.name,
repo.app.config.options.mount_label,
summary)
branches = repo.symbolics_for_commit(ci)[0]
text = "%s: %s %s%s" % (",".join(b for b in branches),
ci.message,
base_url, ci.url())
Notification.post(
artifact=repo,
topic='metadata',
subject=subject,
text=text)
def _summarize(message):
if not message: return ''
summary = []
for line in message.splitlines():
line = line.rstrip()
if line: summary.append(line)
else: break
return ' '.join(summary)
def _diff_trees(lhs, rhs, index, *path):
def _fq(name):
return '/'.join(reversed(
(name,) + path))
# Diff the trees
rhs_tree_ids = dict(
(o.name, o.id)
for o in rhs.tree_ids)
for o in lhs.tree_ids:
rhs_id = rhs_tree_ids.pop(o.name, None) # remove so won't be picked up as added, below
if rhs_id == o.id: # no change
continue
elif rhs_id is None: # removed
yield (_fq(o.name), o.id, None)
rhs_tree = Object(_id=None, tree_ids=[], blob_ids=[], other_ids=[])
else: # changed
rhs_tree = index[rhs_id]
for difference in _diff_trees(index[o.id], rhs_tree, index, o.name, *path):
yield difference
for name, id in rhs_tree_ids.items(): # added
yield (_fq(name), None, id)
lhs_tree = Object(_id=None, tree_ids=[], blob_ids=[], other_ids=[])
for difference in _diff_trees(lhs_tree, index[id], index, name, *path):
yield difference
# DIff the blobs
rhs_blob_ids = dict(
(o.name, o.id)
for o in rhs.blob_ids)
for o in lhs.blob_ids:
rhs_id = rhs_blob_ids.pop(o.name, None)
if rhs_id == o.id:
continue # no change
elif rhs_id is None:
yield (_fq(o.name), o.id, None)
else:
yield (_fq(o.name), o.id, rhs_id)
for name, id in rhs_blob_ids.items():
yield (_fq(name), None, id)
def get_commit_info(commit):
if not isinstance(commit, Commit):
commit = mapper(Commit).create(commit, dict(instrument=False))
sess = session(commit)
if sess: sess.expunge(commit)
return dict(
id=commit._id,
author=commit.authored.name,
author_email=commit.authored.email,
date=commit.authored.date,
author_url=commit.author_url,
shortlink=commit.shorthand_id(),
summary=commit.summary
)
def last_known_commit_id(all_commit_ids, new_commit_ids):
"""
Return the newest "known" (cached in mongo) commit id.
Params:
all_commit_ids: Every commit id from the repo on disk, sorted oldest to
newest.
new_commit_ids: Commit ids that are not yet cached in mongo, sorted
oldest to newest.
"""
if not all_commit_ids: return None
if not new_commit_ids: return all_commit_ids[-1]
return all_commit_ids[all_commit_ids.index(new_commit_ids[0]) - 1]
def compute_lcds(commit, cache):
'''
Compute LastCommit data for every Tree node under this tree.
'''
trees = cache.get(TreesDoc, dict(_id=commit._id))
if not trees:
log.error('Missing TreesDoc for %s; skipping compute_lcd' % commit)
return
with h.push_config(c, model_cache=cache):
_update_tree_cache(trees.tree_ids, cache)
tree = _pull_tree(cache, commit.tree_id, commit)
_compute_lcds(tree, cache)
def _compute_lcds(tree, cache):
if tree.path().strip('/') not in tree.commit.changed_paths:
return
lcd = LastCommit.get(tree, create=True) # auto-vivify LCD
for x in tree.tree_ids:
sub_tree = _pull_tree(cache, x.id, tree, x.name)
_compute_lcds(sub_tree, cache)
def _pull_tree(cache, tree_id, *context):
'''
Since the Tree instances stick around in our cache,
subsequent calls to set_context are overwriting our
in-use copies and confusing the walk. So, make an
memory-only copy for our use.
'''
cache_tree = cache.get(Tree, dict(_id=tree_id))
new_tree = Tree(
_id=cache_tree._id,
tree_ids=cache_tree.tree_ids,
blob_ids=cache_tree.blob_ids,
other_ids=cache_tree.other_ids,
)
session(new_tree).expunge(new_tree)
new_tree.set_context(*context)
return new_tree
def _update_tree_cache(tree_ids, cache):
current_ids = set(tree_ids)
cached_ids = set(cache.instance_ids(Tree))
new_ids = current_ids - cached_ids
cache.batch_load(Tree, {'_id': {'$in': list(new_ids)}})