20
22
At the moment remote branches are only for HTTP and only for read
26
30
from cStringIO import StringIO
31
from bzrlib.errors import BzrError, BzrCheckError
32
from bzrlib.branch import Branch, BZR_BRANCH_FORMAT
33
from bzrlib.trace import mutter
34
from bzrlib.xml import serializer_v4
33
from errors import BzrError, BzrCheckError
34
from branch import Branch, BZR_BRANCH_FORMAT
35
from trace import mutter
37
# velocitynet.com.au transparently proxies connections and thereby
38
# breaks keep-alive -- sucks!
37
42
ENABLE_URLGRABBER = False
39
from bzrlib.errors import BzrError, NoSuchRevision
44
def get_url(url, compressed=False):
48
mutter("get_url %s" % url)
49
url_f = urllib2.urlopen(url)
51
return gzip.GzipFile(fileobj=StringIO(url_f.read()))
41
class GetFailed(BzrError):
42
def __init__(self, url, status):
43
BzrError.__init__(self, "Get %s failed with status %s" % (url, status))
47
56
if ENABLE_URLGRABBER:
48
import util.urlgrabber
49
import util.urlgrabber.keepalive
50
util.urlgrabber.keepalive.DEBUG = 0
58
import urlgrabber.keepalive
59
urlgrabber.keepalive.DEBUG = 0
51
60
def get_url(path, compressed=False):
56
mutter("grab url %s" % url)
57
url_f = util.urlgrabber.urlopen(url, keepalive=1, close_connection=0)
58
if url_f.status != 200:
59
raise GetFailed(url, url_f.status)
65
url_f = urlgrabber.urlopen(url, keepalive=1, close_connection=0)
63
69
return gzip.GzipFile(fileobj=StringIO(url_f.read()))
64
70
except urllib2.URLError, e:
65
71
raise BzrError("remote fetch failed: %r: %s" % (url, e))
67
def get_url(url, compressed=False):
71
mutter("get_url %s" % url)
72
url_f = urllib2.urlopen(url)
74
return gzip.GzipFile(fileobj=StringIO(url_f.read()))
96
91
except urllib2.URLError:
99
scheme, host, path = list(urlparse.urlparse(url))[:3]
100
# discard params, query, fragment
102
# strip off one component of the path component
103
idx = path.rfind('/')
104
if idx == -1 or path == '/':
105
raise BzrError('no branch root found for URL %s'
106
' or enclosing directories'
109
url = urlparse.urlunparse((scheme, host, path, '', '', ''))
97
raise BzrError('no branch root found for URL %s' % orig_url)
113
103
class RemoteBranch(Branch):
114
def __init__(self, baseurl, find_root=True):
104
def __init__(self, baseurl, find_root=True, lock_mode='r'):
115
105
"""Create new proxy for a remote branch."""
106
if lock_mode not in ('', 'r'):
107
raise BzrError('lock mode %r is not supported for remote branches'
117
self.base = _find_remote_root(baseurl)
111
self.baseurl = _find_remote_root(baseurl)
113
self.baseurl = baseurl
120
114
self._check_format()
122
self.inventory_store = RemoteStore(baseurl + '/.bzr/inventory-store/')
123
self.text_store = RemoteStore(baseurl + '/.bzr/text-store/')
124
self.revision_store = RemoteStore(baseurl + '/.bzr/revision-store/')
126
116
def __str__(self):
127
b = getattr(self, 'baseurl', 'undefined')
128
return '%s(%r)' % (self.__class__.__name__, b)
117
return '%s(%r)' % (self.__class__.__name__, self.baseurl)
130
119
__repr__ = __str__
132
121
def controlfile(self, filename, mode):
133
122
if mode not in ('rb', 'rt', 'r'):
134
123
raise BzrError("file mode %r not supported for remote branches" % mode)
135
return get_url(self.base + '/.bzr/' + filename, False)
139
# no locking for remote branches yet
142
def lock_write(self):
143
from errors import LockError
144
raise LockError("write lock not supported for remote branch %s"
124
return get_url(self.baseurl + '/.bzr/' + filename, False)
126
def _need_readlock(self):
127
# remote branch always safe for read
130
def _need_writelock(self):
131
raise BzrError("cannot get write lock on HTTP remote branch")
151
133
def relpath(self, path):
152
if not path.startswith(self.base):
134
if not path.startswith(self.baseurl):
153
135
raise BzrError('path %r is not under base URL %r'
136
% (path, self.baseurl))
137
pl = len(self.baseurl)
156
138
return path[pl:].lstrip('/')
159
140
def get_revision(self, revision_id):
161
revf = self.revision_store[revision_id]
163
raise NoSuchRevision(self, revision_id)
164
r = serializer_v4.read_revision(revf)
141
from revision import Revision
142
revf = get_url(self.baseurl + '/.bzr/revision-store/' + revision_id,
144
r = Revision.read_xml(revf)
165
145
if r.revision_id != revision_id:
166
146
raise BzrCheckError('revision stored as {%s} actually contains {%s}'
167
147
% (revision_id, r.revision_id))
171
class RemoteStore(object):
172
def __init__(self, baseurl):
173
self._baseurl = baseurl
176
def _path(self, name):
178
raise ValueError('invalid store id', name)
179
return self._baseurl + '/' + name
181
def __getitem__(self, fileid):
182
p = self._path(fileid)
184
return get_url(p, compressed=True)
185
except urllib2.URLError:
186
raise KeyError(fileid)
152
from revision import Revision
153
from branch import Branch
154
from inventory import Inventory
160
history = get_url('/.bzr/revision-history').readlines()
161
num_revs = len(history)
162
for i, rev_id in enumerate(history):
163
rev_id = rev_id.rstrip()
164
print 'read revision %d/%d' % (i, num_revs)
166
# python gzip needs a seekable file (!!) but the HTTP response
167
# isn't, so we need to buffer it
169
rev_f = get_url('/.bzr/revision-store/%s' % rev_id,
172
rev = Revision.read_xml(rev_f)
174
inv_id = rev.inventory_id
175
if inv_id not in got_invs:
176
print 'get inventory %s' % inv_id
177
inv_f = get_url('/.bzr/inventory-store/%s' % inv_id,
179
inv = Inventory.read_xml(inv_f)
180
print '%4d inventory entries' % len(inv)
182
for path, ie in inv.iter_entries():
186
if text_id in got_texts:
188
print ' fetch %s text {%s}' % (path, text_id)
189
text_f = get_url('/.bzr/text-store/%s' % text_id,
191
got_texts.add(text_id)
199
BASE_URL = 'http://bazaar-ng.org/bzr/bzr.dev/'
200
b = RemoteBranch(BASE_URL)
201
## print '\n'.join(b.revision_history())
202
from log import show_log
206
if __name__ == '__main__':