import sys
import re
import os
import shutil
import string
import logging
import subprocess
from subprocess import Popen, PIPE
from hashlib import sha1
from cStringIO import StringIO
from datetime import datetime
from glob import glob
import tg
import pysvn
from pymongo.errors import DuplicateKeyError
from pylons import tmpl_context as c, app_globals as g
from ming.base import Object
from ming.orm import Mapper, FieldProperty, session
from ming.utils import LazyProperty
from allura import model as M
from allura.lib import helpers as h
from allura.model.repository import GitLikeTree
from allura.model.auth import User
from allura.lib.utils import svn_path_exists
log = logging.getLogger(__name__)
class Repository(M.Repository):
tool_name='SVN'
repo_id='svn'
type_s='SVN Repository'
class __mongometa__:
name='svn-repository'
branches = FieldProperty([dict(name=str,object_id=str)])
_refresh_precompute = False
@LazyProperty
def _impl(self):
return SVNImplementation(self)
def clone_command(self, category, username=''):
'''Return a string suitable for copy/paste that would clone this repo locally
category is one of 'ro' (read-only), 'rw' (read/write), or 'https' (read/write via https)
'''
if not username and c.user not in (None, User.anonymous()):
username = c.user.username
tpl = string.Template(tg.config.get('scm.clone.%s.%s' % (category, self.tool)) or
tg.config.get('scm.clone.%s' % self.tool))
return tpl.substitute(dict(username=username,
source_url=self.clone_url(category, username)+c.app.config.options.get('checkout_url'),
dest_path=self.suggested_clone_dest_path()))
def compute_diffs(self): return
def count(self, *args, **kwargs):
return super(Repository, self).count(None)
def count_revisions(self, ci):
# since SVN histories are inherently linear and the commit _id
# contains the revision, just parse it out from there
return int(self._impl._revno(ci._id))
def log(self, branch='HEAD', offset=0, limit=10):
return list(self._log(branch, offset, limit))
def commitlog(self, commit_ids, skip=0, limit=sys.maxint):
ci_id = commit_ids[0]
if skip > 0:
rid, rev = ci_id.split(':')
rev = int(rev) - skip
ci_id = '%s:%s' % (rid, rev)
ci = self._impl.commit(ci_id)
while ci is not None and limit > 0:
yield ci._id
limit -= 1
ci = ci.parent()
def latest(self, branch=None):
if self._impl is None: return None
if not self.heads: return None
return self._impl.commit(self.heads[0].object_id)
class SVNCalledProcessError(Exception):
def __init__(self, cmd, returncode, stdout, stderr):
self.cmd = cmd
self.returncode = returncode
self.stdout = stdout
self.stderr = stderr
def __str__(self):
return "Command: '%s' returned non-zero exit status %s\nSTDOUT: %s\nSTDERR: %s" % \
(self.cmd, self.returncode, self.stdout, self.stderr)
class SVNImplementation(M.RepositoryImplementation):
post_receive_template = string.Template(
'#!/bin/bash\n'
'# The following is required for site integration, do not remove/modify.\n'
'# Place user hook code in post-commit-user and it will be called from here.\n'
'curl -s $url\n'
'\n'
'DIR="$$(dirname "$${BASH_SOURCE[0]}")"\n'
'if [ -x $$DIR/post-commit-user ]; then'
' exec $$DIR/post-commit-user "$$@"\n'
'fi')
def __init__(self, repo):
self._repo = repo
@LazyProperty
def _svn(self):
return pysvn.Client()
@LazyProperty
def _url(self):
return 'file://%s%s' % (self._repo.fs_path, self._repo.name)
def shorthand_for_commit(self, oid):
return '[r%d]' % self._revno(oid)
def url_for_commit(self, commit):
if isinstance(commit, basestring):
object_id = commit
else:
object_id = commit._id
return '%s%d/' % (
self._repo.url(), self._revno(object_id))
def init(self, default_dirs=True, skip_special_files=False):
fullname = self._setup_paths()
log.info('svn init %s', fullname)
if os.path.exists(fullname):
shutil.rmtree(fullname)
subprocess.call(['svnadmin', 'create', self._repo.name],
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
cwd=self._repo.fs_path)
if not skip_special_files:
self._setup_special_files()
self._repo.status = 'ready'
# make first commit with dir structure
if default_dirs:
self._repo._impl._svn.checkout('file://'+fullname, fullname+'/tmp')
os.mkdir(fullname+'/tmp/trunk')
os.mkdir(fullname+'/tmp/tags')
os.mkdir(fullname+'/tmp/branches')
self._repo._impl._svn.add(fullname+'/tmp/trunk')
self._repo._impl._svn.add(fullname+'/tmp/tags')
self._repo._impl._svn.add(fullname+'/tmp/branches')
self._repo._impl._svn.checkin([fullname+'/tmp/trunk',fullname+'/tmp/tags',fullname+'/tmp/branches'],'Initial commit')
shutil.rmtree(fullname+'/tmp')
def clone_from(self, source_url):
'''Initialize a repo as a clone of another using svnsync'''
self.init(default_dirs=False, skip_special_files=True)
# Need a pre-revprop-change hook for cloning
fn = os.path.join(self._repo.fs_path, self._repo.name,
'hooks', 'pre-revprop-change')
with open(fn, 'wb') as fp:
fp.write('#!/bin/sh\n')
os.chmod(fn, 0755)
def check_call(cmd):
p = Popen(cmd, stdin=PIPE, stdout=PIPE, stderr=PIPE)
stdout, stderr = p.communicate(input='p\n')
if p.returncode != 0:
self._repo.status = 'ready'
session(self._repo).flush(self._repo)
raise SVNCalledProcessError(cmd, p.returncode, stdout, stderr)
self._repo.status = 'importing'
session(self._repo).flush(self._repo)
log.info('Initialize %r as a clone of %s',
self._repo, source_url)
check_call(['svnsync', 'init', self._url, source_url])
check_call(['svnsync', '--non-interactive', 'sync', self._url])
log.info('... %r cloned', self._repo)
if not svn_path_exists("file://%s%s/%s" %
(self._repo.fs_path,
self._repo.name,
c.app.config.options['checkout_url'])):
c.app.config.options['checkout_url'] = ""
self._setup_special_files(source_url)
def refresh_heads(self):
info = self._svn.info2(
self._url,
revision=pysvn.Revision(pysvn.opt_revision_kind.head),
recurse=False)[0][1]
oid = self._oid(info.rev.number)
self._repo.heads = [ Object(name=None, object_id=oid) ]
# Branches and tags aren't really supported in subversion
self._repo.branches = []
self._repo.repo_tags = []
session(self._repo).flush(self._repo)
def commit(self, rev):
if rev in ('HEAD', None):
if not self._repo.heads: return None
oid = self._repo.heads[0].object_id
elif isinstance(rev, int) or rev.isdigit():
oid = self._oid(rev)
else:
oid = rev
result = M.repo.Commit.query.get(_id=oid)
if result is None: return None
result.set_context(self._repo)
return result
def all_commit_ids(self):
"""Return a list of commit ids, starting with the head (most recent
commit) and ending with the root (first commit).
"""
if not self._repo.heads:
return []
head_revno = self._revno(self._repo.heads[0].object_id)
return map(self._oid, range(head_revno, 0, -1))
def new_commits(self, all_commits=False):
head_revno = self._revno(self._repo.heads[0].object_id)
oids = [ self._oid(revno) for revno in range(1, head_revno+1) ]
if all_commits:
return oids
# Find max commit id -- everything greater than that will be "unknown"
prefix = self._oid('')
q = M.repo.Commit.query.find(
dict(
type='commit',
_id={'$gt':prefix},
),
dict(_id=True)
)
seen_oids = set()
for d in q.ming_cursor.cursor:
oid = d['_id']
if not oid.startswith(prefix): break
seen_oids.add(oid)
return [
oid for oid in oids if oid not in seen_oids ]
def refresh_commit_info(self, oid, seen_object_ids, lazy=True):
from allura.model.repo import CommitDoc, DiffInfoDoc
ci_doc = CommitDoc.m.get(_id=oid)
if ci_doc and lazy: return False
revno = self._revno(oid)
rev = self._revision(oid)
try:
log_entry = self._svn.log(
self._url,
revision_start=rev,
limit=1,
discover_changed_paths=True)[0]
except pysvn.ClientError:
log.info('ClientError processing %r %r, treating as empty', oid, self._repo, exc_info=True)
log_entry = Object(date='', message='', changed_paths=[])
log_date = None
if hasattr(log_entry, 'date'):
log_date = datetime.utcfromtimestamp(log_entry.date)
user = Object(
name=log_entry.get('author', '--none--'),
email='',
date=log_date)
args = dict(
tree_id=None,
committed=user,
authored=user,
message=log_entry.get("message", "--none--"),
parent_ids=[],
child_ids=[])
if revno > 1:
args['parent_ids'] = [ self._oid(revno-1) ]
if ci_doc:
ci_doc.update(**args)
ci_doc.m.save()
else:
ci_doc = CommitDoc(dict(args, _id=oid))
try:
ci_doc.m.insert(safe=True)
except DuplicateKeyError:
if lazy: return False
# Save diff info
di = DiffInfoDoc.make(dict(_id=ci_doc._id, differences=[]))
for path in log_entry.changed_paths:
if path.action in ('A', 'M', 'R'):
try:
rhs_info = self._svn.info2(
self._url + h.really_unicode(path.path),
revision=self._revision(ci_doc._id),
recurse=False)[0][1]
rhs_id = self._obj_oid(ci_doc._id, rhs_info)
except pysvn.ClientError, e:
# pysvn will sometimes misreport deleted files (D) as
# something else (like A), causing info2() to raise a
# ClientError since the file doesn't exist in this
# revision. Set lrhs_id = None to treat like a deleted file
log.info('This error was handled gracefully and logged '
'for informational purposes only:\n' + str(e))
rhs_id = None
else:
rhs_id = None
if ci_doc.parent_ids and path.action in ('D', 'M', 'R'):
try:
lhs_info = self._svn.info2(
self._url + h.really_unicode(path.path),
revision=self._revision(ci_doc.parent_ids[0]),
recurse=False)[0][1]
lhs_id = self._obj_oid(ci_doc._id, lhs_info)
except pysvn.ClientError, e:
# pysvn will sometimes report new files as 'M'odified,
# causing info2() to raise ClientError since the file
# doesn't exist in the parent revision. Set lhs_id = None
# to treat like a newly added file.
log.info('This error was handled gracefully and logged '
'for informational purposes only:\n' + str(e))
lhs_id = None
else:
lhs_id = None
di.differences.append(dict(
name=h.really_unicode(path.path),
lhs_id=lhs_id,
rhs_id=rhs_id))
di.m.save()
return True
def compute_tree_new(self, commit, tree_path='/'):
from allura.model import repo as RM
tree_path = tree_path[:-1]
tree_id = self._tree_oid(commit._id, tree_path)
tree = RM.Tree.query.get(_id=tree_id)
if tree:
return tree_id
log.debug('Computing tree for %s: %s',
self._revno(commit._id), tree_path)
rev = self._revision(commit._id)
try:
infos = self._svn.info2(
self._url + tree_path,
revision=rev,
depth=pysvn.depth.immediates)
except pysvn.ClientError:
log.exception('Error computing tree for %s: %s(%s)',
self._repo, commit, tree_path)
return None
log.debug('Compute tree for %d paths', len(infos))
tree_ids = []
blob_ids = []
for path, info in infos[1:]:
last_commit_id = self._oid(info['last_changed_rev'].number)
last_commit = M.repo.Commit.query.get(_id=last_commit_id)
M.repo_refresh.set_last_commit(
self._repo._id,
re.sub(r'/?$', '/', tree_path), # force it to end with /
path,
self._tree_oid(commit._id, path),
M.repo_refresh.get_commit_info(last_commit))
if info.kind == pysvn.node_kind.dir:
tree_ids.append(Object(
id=self._tree_oid(commit._id, path),
name=path))
elif info.kind == pysvn.node_kind.file:
blob_ids.append(Object(
id=self._tree_oid(commit._id, path),
name=path))
else:
assert False
tree, is_new = RM.Tree.upsert(tree_id,
tree_ids=tree_ids,
blob_ids=blob_ids,
other_ids=[],
)
if is_new:
trees_doc = RM.TreesDoc.m.get(_id=commit._id)
if not trees_doc:
trees_doc = RM.TreesDoc(dict(
_id=commit._id,
tree_ids=[]))
trees_doc.tree_ids.append(tree_id)
trees_doc.m.save(safe=False)
return tree_id
def _tree_oid(self, commit_id, path):
data = 'tree\n%s\n%s' % (commit_id, h.really_unicode(path))
return sha1(data.encode('utf-8')).hexdigest()
def _blob_oid(self, commit_id, path):
data = 'blob\n%s\n%s' % (commit_id, h.really_unicode(path))
return sha1(data.encode('utf-8')).hexdigest()
def _obj_oid(self, commit_id, info):
path = info.URL[len(info.repos_root_URL):]
if info.kind == pysvn.node_kind.dir:
return self._tree_oid(commit_id, path)
else:
return self._blob_oid(commit_id, path)
def log(self, object_id, skip, count):
revno = self._revno(object_id)
result = []
while count and revno:
if skip == 0:
result.append(self._oid(revno))
count -= 1
else:
skip -= 1
revno -= 1
if revno:
return result, [ self._oid(revno) ]
else:
return result, []
def open_blob(self, blob):
data = self._svn.cat(
self._url + blob.path(),
revision=self._revision(blob.commit._id))
return StringIO(data)
def blob_size(self, blob):
try:
data = self._svn.list(
self._url + blob.path(),
revision=self._revision(blob.commit._id),
dirent_fields=pysvn.SVN_DIRENT_SIZE)
except pysvn.ClientError:
log.info('ClientError getting filesize %r %r, returning 0', blob.path(), self._repo, exc_info=True)
return 0
try:
size = data[0][0]['size']
except (IndexError, KeyError):
log.info('Error getting filesize: bad data from svn client %r %r, returning 0', blob.path(), self._repo, exc_info=True)
size = 0
return size
def _setup_hooks(self, source_path=None):
'Set up the post-commit and pre-revprop-change hooks'
# setup a post-commit hook to notify Allura of changes to the repo
# the hook should also call the user-defined post-commit-user hook
text = self.post_receive_template.substitute(
url=tg.config.get('base_url', 'http://localhost:8080')
+ '/auth/refresh_repo' + self._repo.url())
fn = os.path.join(self._repo.fs_path, self._repo.name, 'hooks', 'post-commit')
with open(fn, 'wb') as fp:
fp.write(text)
os.chmod(fn, 0755)
# create a blank pre-revprop-change file if one doesn't
# already exist to allow remote modification of revision
# properties (see http://svnbook.red-bean.com/en/1.1/ch05s02.html)
fn = os.path.join(self._repo.fs_path, self._repo.name, 'hooks', 'pre-revprop-change')
if not os.path.exists(fn):
with open(fn, 'wb') as fp:
fp.write('#!/bin/sh\n')
os.chmod(fn, 0755)
def _revno(self, oid):
return int(oid.split(':')[1])
def _revision(self, oid):
return pysvn.Revision(
pysvn.opt_revision_kind.number,
self._revno(oid))
def _oid(self, revno):
return '%s:%s' % (self._repo._id, revno)
Mapper.compile_all()