import os
import re
import sys
import logging
from hashlib import sha1
from itertools import izip, chain
from datetime import datetime
from collections import defaultdict
from difflib import SequenceMatcher
from pylons import c
import pymongo.errors
from ming import Field, collection
from ming import schema as S
from ming.base import Object
from ming.utils import LazyProperty
from ming.orm import mapper, session
from allura.lib import utils
from allura.lib import helpers as h
from .auth import User
from .session import main_doc_session, project_doc_session
from .session import repository_orm_session
log = logging.getLogger(__name__)
# Some schema types
SUser = dict(name=str, email=str, date=datetime)
SObjType=S.OneOf('blob', 'tree', 'submodule')
# Used for when we're going to batch queries using $in
QSIZE = 100
README_RE = re.compile('^README(\.[^.]*)?$', re.IGNORECASE)
VIEWABLE_EXTENSIONS = ['.php','.py','.js','.java','.html','.htm','.yaml','.sh',
'.rb','.phtml','.txt','.bat','.ps1','.xhtml','.css','.cfm','.jsp','.jspx',
'.pl','.php4','.php3','.rhtml','.svg','.markdown','.json','.ini','.tcl','.vbs','.xsl']
# Basic commit information
# One of these for each commit in the physical repo on disk. The _id is the
# hexsha of the commit (for Git and Hg).
CommitDoc = collection(
'repo_ci', main_doc_session,
Field('_id', str),
Field('tree_id', str),
Field('committed', SUser),
Field('authored', SUser),
Field('message', str),
Field('parent_ids', [str], index=True),
Field('child_ids', [str], index=True),
Field('repo_ids', [ S.ObjectId() ], index=True))
# Basic tree information (also see TreesDoc)
TreeDoc = collection(
'repo_tree', main_doc_session,
Field('_id', str),
Field('tree_ids', [dict(name=str, id=str)]),
Field('blob_ids', [dict(name=str, id=str)]),
Field('other_ids', [dict(name=str, id=str, type=SObjType)]))
# Information about the last commit to touch a tree/blob
# LastCommitDoc.object_id = TreeDoc._id
LastCommitDoc = collection(
'repo_last_commit', project_doc_session,
Field('_id', str),
Field('object_id', str, index=True),
Field('name', str),
Field('commit_info', dict(
id=str,
date=datetime,
author=str,
author_email=str,
author_url=str,
shortlink=str,
summary=str)))
# List of all trees contained within a commit
# TreesDoc._id = CommitDoc._id
# TreesDoc.tree_ids = [ TreeDoc._id, ... ]
TreesDoc = collection(
'repo_trees', main_doc_session,
Field('_id', str),
Field('tree_ids', [str]))
# Information about which things were added/removed in commit
# DiffInfoDoc._id = CommitDoc._id
DiffInfoDoc = collection(
'repo_diffinfo', main_doc_session,
Field('_id', str),
Field(
'differences',
[ dict(name=str, lhs_id=str, rhs_id=str)]))
# List of commit runs (a run is a linear series of single-parent commits)
# CommitRunDoc.commit_ids = [ CommitDoc._id, ... ]
CommitRunDoc = collection(
'repo_commitrun', main_doc_session,
Field('_id', str),
Field('parent_commit_ids', [str]),
Field('commit_ids', [str], index=True),
Field('commit_times', [datetime]))
class RepoObject(object):
def __repr__(self): # pragma no cover
return '<%s %s>' % (
self.__class__.__name__, self._id)
def primary(self):
return self
def index_id(self):
'''Globally unique artifact identifier. Used for
SOLR ID, shortlinks, and maybe elsewhere
'''
id = '%s.%s#%s' % (
self.__class__.__module__,
self.__class__.__name__,
self._id)
return id.replace('.', '/')
@classmethod
def upsert(cls, id):
isnew = False
r = cls.query.get(_id=id)
if r is not None: return r, isnew
try:
r = cls(_id=id)
session(r).flush(r)
isnew = True
except pymongo.errors.DuplicateKeyError: # pragma no cover
session(r).expunge(r)
r = cls.query.get(_id=id)
return r, isnew
class Commit(RepoObject):
type_s = 'Commit'
# Ephemeral attrs
repo=None
def set_context(self, repo):
self.repo = repo
@LazyProperty
def author_url(self):
u = User.by_email_address(self.authored.email)
if u: return u.url()
@LazyProperty
def committer_url(self):
u = User.by_email_address(self.committed.email)
if u: return u.url()
@LazyProperty
def tree(self):
if self.tree_id is None:
self.tree_id = self.repo.compute_tree_new(self)
if self.tree_id is None:
return None
t = Tree.query.get(_id=self.tree_id)
if t is None:
self.tree_id = self.repo.compute_tree_new(self)
t = Tree.query.get(_id=self.tree_id)
if t is not None: t.set_context(self)
return t
@LazyProperty
def summary(self):
message = h.really_unicode(self.message)
first_line = message.split('\n')[0]
return h.text.truncate(first_line, 50)
def shorthand_id(self):
if self.repo is None: self.repo = self.guess_repo()
if self.repo is None: return repr(self)
return self.repo.shorthand_for_commit(self._id)
@LazyProperty
def symbolic_ids(self):
return self.repo.symbolics_for_commit(self)
def url(self):
if self.repo is None: self.repo = self.guess_repo()
if self.repo is None: return '#'
return self.repo.url_for_commit(self)
def guess_repo(self):
for ac in c.project.app_configs:
try:
app = c.project.app_instance(ac)
if app.repo._id in self.repo_ids:
return app.repo
except AttributeError:
pass
return None
def link_text(self):
'''The link text that will be used when a shortlink to this artifact
is expanded into an <a></a> tag.
By default this method returns shorthand_id(). Subclasses should
override this method to provide more descriptive link text.
'''
return self.shorthand_id()
def log_iter(self, skip, count):
for oids in utils.chunked_iter(commitlog([self._id]), QSIZE):
oids = list(oids)
commits = dict(
(ci._id, ci) for ci in self.query.find(dict(
_id={'$in': oids})))
for oid in oids:
if skip:
skip -= 1
continue
if count:
count -= 1
ci = commits[oid]
ci.set_context(self.repo)
yield ci
else:
break
def log(self, skip, count):
return list(self.log_iter(skip, count))
def count_revisions(self):
from .repo_refresh import CommitRunBuilder
result = 0
# If there's no CommitRunDoc for this commit, the call to
# commitlog() below will raise a KeyError. Repair the CommitRuns for
# this repo by rebuilding them entirely.
if self.repo and not CommitRunDoc.m.find(dict(commit_ids=self._id)).count():
log.info('CommitRun incomplete, rebuilding with all commits')
rb = CommitRunBuilder(list(self.repo.all_commit_ids()))
rb.run()
rb.cleanup()
for oid in commitlog([self._id]): result += 1
return result
def context(self):
result = dict(prev=None, next=None)
if self.parent_ids:
result['prev'] = self.query.find(dict(_id={'$in': self.parent_ids })).all()
for ci in result['prev']:
ci.set_context(self.repo)
if self.child_ids:
result['next'] = self.query.find(dict(_id={'$in': self.child_ids })).all()
for ci in result['next']:
ci.set_context(self.repo)
return result
@LazyProperty
def diffs(self):
di = DiffInfoDoc.m.get(_id=self._id)
if di is None:
return Object(added=[], removed=[], changed=[], copied=[])
added = []
removed = []
changed = []
copied = []
for change in di.differences:
if change.rhs_id is None:
removed.append(change.name)
elif change.lhs_id is None:
added.append(change.name)
else:
changed.append(change.name)
return Object(
added=added, removed=removed,
changed=changed, copied=copied)
def get_path(self, path):
if path[0] == '/': path = path[1:]
parts = path.split('/')
cur = self.tree
for part in parts:
cur = cur[part]
return cur
class Tree(RepoObject):
# Ephemeral attrs
repo=None
commit=None
parent=None
name=None
def compute_hash(self):
'''Compute a hash based on the contents of the tree. Note that this
hash does not necessarily correspond to any actual DVCS hash.
'''
lines = (
[ 'tree' + x.name + x.id for x in self.tree_ids ]
+ [ 'blob' + x.name + x.id for x in self.blob_ids ]
+ [ x.type + x.name + x.id for x in self.other_ids ])
sha_obj = sha1()
for line in sorted(lines):
sha_obj.update(line)
return sha_obj.hexdigest()
def __getitem__(self, name):
obj = self.by_name[name]
if obj['type'] == 'blob':
return Blob(self, name, obj['id'])
obj = self.query.get(_id=obj['id'])
if obj is None:
oid = self.repo.compute_tree_new(self.commit, self.path() + name + '/')
obj = self.query.get(_id=oid)
if obj is None: raise KeyError, name
obj.set_context(self, name)
return obj
def set_context(self, commit_or_tree, name=None):
assert commit_or_tree is not self
self.repo = commit_or_tree.repo
if name:
self.commit = commit_or_tree.commit
self.parent = commit_or_tree
self.name = name
else:
self.commit = commit_or_tree
def readme(self):
'returns (filename, unicode text) if a readme file is found'
for x in self.blob_ids:
if README_RE.match(x.name):
name = x.name
blob = self[name]
return (x.name, h.really_unicode(blob.text))
return None, None
def ls(self):
# Load last commit info
id_re = re.compile("{}:{}:".format(self.repo._id, self.path()))
lc_index = dict(
(lc.name, lc.commit_info)
for lc in LastCommitDoc.m.find(dict(_id=id_re)))
results = []
def _get_last_commit(name):
lc = lc_index.get(name)
if lc is None:
lc = dict(
author=None,
author_email=None,
author_url=None,
date=None,
id=None,
href=None,
shortlink=None,
summary=None)
if 'href' not in lc:
lc['href'] = self.repo.url_for_commit(lc['id'])
return lc
for x in sorted(self.tree_ids, key=lambda x:x.name):
results.append(dict(
kind='DIR',
name=x.name,
href=x.name + '/',
last_commit=_get_last_commit(x.name)))
for x in sorted(self.blob_ids, key=lambda x:x.name):
results.append(dict(
kind='FILE',
name=x.name,
href=x.name,
last_commit=_get_last_commit(x.name)))
for x in sorted(self.other_ids, key=lambda x:x.name):
results.append(dict(
kind=x.type,
name=x.name,
href=None,
last_commit=_get_last_commit(x.name)))
return results
def path(self):
if self.parent:
assert self.parent is not self
return self.parent.path() + self.name + '/'
else:
return '/'
def url(self):
return self.commit.url() + 'tree' + self.path()
@LazyProperty
def by_name(self):
d = Object((x.name, x) for x in self.other_ids)
d.update(
(x.name, Object(x, type='tree'))
for x in self.tree_ids)
d.update(
(x.name, Object(x, type='blob'))
for x in self.blob_ids)
return d
def is_blob(self, name):
return self.by_name[name]['type'] == 'blob'
def get_blob(self, name):
x = self.by_name[name]
return Blob(self, name, x.id)
class Blob(object):
'''Lightweight object representing a file in the repo'''
def __init__(self, tree, name, _id):
self._id = _id
self.tree = tree
self.name = name
self.repo = tree.repo
self.commit = tree.commit
fn, ext = os.path.splitext(self.name)
self.extension = ext or fn
def path(self):
return self.tree.path() + h.really_unicode(self.name)
def url(self):
return self.tree.url() + h.really_unicode(self.name)
@LazyProperty
def prev_commit(self):
lc = self.repo.get_last_commit(self)
if lc['id']:
last_commit = self.repo.commit(lc.id)
if last_commit.parent_ids:
return self.repo.commit(last_commit.parent_ids[0])
return None
@LazyProperty
def next_commit(self):
try:
path = self.path()
cur = self.commit
next = cur.context()['next']
while next:
cur = next[0]
next = cur.context()['next']
other_blob = cur.get_path(path)
if other_blob is None or other_blob._id != self._id:
return cur
except:
log.exception('Lookup prev_commit')
return None
@LazyProperty
def _content_type_encoding(self):
return self.repo.guess_type(self.name)
@LazyProperty
def content_type(self):
return self._content_type_encoding[0]
@LazyProperty
def content_encoding(self):
return self._content_type_encoding[1]
@property
def has_pypeline_view(self):
if README_RE.match(self.name) or self.extension in ['.md', '.rst']:
return True
return False
@property
def has_html_view(self):
if self.content_type.startswith('text/') or self.extension in VIEWABLE_EXTENSIONS or \
self.extension in self._additional_viewable_extensions:
return True
return False
@property
def has_image_view(self):
return self.content_type.startswith('image/')
def context(self):
path = self.path()
prev = self.prev_commit
next = self.next_commit
if prev is not None: prev = prev.get_path(path)
if next is not None: next = next.get_path(path)
return dict(
prev=prev,
next=next)
def open(self):
return self.repo.open_blob(self)
def __iter__(self):
return iter(self.open())
@LazyProperty
def size(self):
return self.repo.blob_size(self)
@LazyProperty
def text(self):
return self.open().read()
@classmethod
def diff(cls, v0, v1):
differ = SequenceMatcher(v0, v1)
return differ.get_opcodes()
mapper(Commit, CommitDoc, repository_orm_session)
mapper(Tree, TreeDoc, repository_orm_session)
def commitlog(commit_ids, skip=0, limit=sys.maxint):
seen = set()
def _visit(commit_id):
if commit_id in seen: return
run = CommitRunDoc.m.get(commit_ids=commit_id)
if run is None: return
index = False
for pos, (oid, time) in enumerate(izip(run.commit_ids, run.commit_times)):
if oid == commit_id: index = True
elif not index: continue
seen.add(oid)
ci_times[oid] = time
if pos+1 < len(run.commit_ids):
ci_parents[oid] = [ run.commit_ids[pos+1] ]
else:
ci_parents[oid] = run.parent_commit_ids
for oid in run.parent_commit_ids:
_visit(oid)
def _gen_ids(commit_ids, skip, limit):
# Traverse the graph in topo order, yielding commit IDs
commits = set(commit_ids)
new_parent = None
while commits and limit:
# next commit is latest commit that's valid to log
if new_parent in commits:
ci = new_parent
else:
ci = max(commits, key=lambda ci:ci_times[ci])
commits.remove(ci)
if skip:
skip -= 1
continue
else:
limit -= 1
yield ci
# remove this commit from its parents children and add any childless
# parents to the 'ready set'
new_parent = None
for oid in ci_parents.get(ci, []):
children = ci_children[oid]
children.discard(ci)
if not children:
commits.add(oid)
new_parent = oid
# Load all the runs to build a commit graph
ci_times = {}
ci_parents = {}
ci_children = defaultdict(set)
log.info('Build commit graph')
for cid in commit_ids:
_visit(cid)
for oid, parents in ci_parents.iteritems():
for ci_parent in parents:
ci_children[ci_parent].add(oid)
return _gen_ids(commit_ids, skip, limit)