46
48
raise bzrlib.errors.BzrError("missing sqlite library")
51
_mapdbs = threading.local()
53
"""Get a cache for this thread's db connections."""
56
except AttributeError:
49
61
class GitShaMap(object):
51
def __init__(self, transport):
52
self.transport = transport
53
self.db = sqlite3.connect(
54
os.path.join(self.transport.local_abspath("."), "git.db"))
62
"""Git<->Bzr revision id mapping database."""
64
def add_entry(self, sha, type, type_data):
65
"""Add a new entry to the database.
67
raise NotImplementedError(self.add_entry)
69
def add_entries(self, entries):
70
"""Add multiple new entries to the database.
75
def lookup_tree(self, fileid, revid):
76
"""Lookup the SHA of a git tree."""
77
raise NotImplementedError(self.lookup_tree)
79
def lookup_blob(self, fileid, revid):
80
"""Lookup a blob by the fileid it has in a bzr revision."""
81
raise NotImplementedError(self.lookup_blob)
83
def lookup_git_sha(self, sha):
84
"""Lookup a Git sha in the database.
86
:param sha: Git object sha
87
:return: (type, type_data) with type_data:
88
revision: revid, tree sha
90
raise NotImplementedError(self.lookup_git_sha)
93
"""List the revision ids known."""
94
raise NotImplementedError(self.revids)
98
raise NotImplementedError(self.sha1s)
101
"""Commit any pending changes."""
104
class DictGitShaMap(GitShaMap):
109
def add_entry(self, sha, type, type_data):
110
self.dict[sha] = (type, type_data)
112
def lookup_git_sha(self, sha):
113
return self.dict[sha]
115
def lookup_tree(self, fileid, revid):
116
for k, v in self.dict.iteritems():
117
if v == ("tree", (fileid, revid)):
119
raise KeyError((fileid, revid))
121
def lookup_blob(self, fileid, revid):
122
for k, v in self.dict.iteritems():
123
if v == ("blob", (fileid, revid)):
125
raise KeyError((fileid, revid))
128
for key, (type, type_data) in self.dict.iteritems():
133
return self.dict.iterkeys()
136
class SqliteGitShaMap(GitShaMap):
138
def __init__(self, path=None):
141
self.db = sqlite3.connect(":memory:")
143
if not mapdbs().has_key(path):
144
mapdbs()[path] = sqlite3.connect(path)
145
self.db = mapdbs()[path]
55
146
self.db.executescript("""
56
147
create table if not exists commits(sha1 text, revid text, tree_sha text);
57
148
create index if not exists commit_sha1 on commits(sha1);
149
create unique index if not exists commit_revid on commits(revid);
58
150
create table if not exists blobs(sha1 text, fileid text, revid text);
59
151
create index if not exists blobs_sha1 on blobs(sha1);
152
create unique index if not exists blobs_fileid_revid on blobs(fileid, revid);
60
153
create table if not exists trees(sha1 text, fileid text, revid text);
61
154
create index if not exists trees_sha1 on trees(sha1);
155
create unique index if not exists trees_fileid_revid on trees(fileid, revid);
64
def _parent_lookup(self, revid):
65
return self.db.execute("select sha1 from commits where revid = ?", (revid,)).fetchone()[0].encode("utf-8")
159
def from_repository(cls, repository):
160
return cls(os.path.join(repository._transport.local_abspath("."), "git.db"))
162
def lookup_commit(self, revid):
163
row = self.db.execute("select sha1 from commits where revid = ?", (revid,)).fetchone()
165
return row[0].encode("utf-8")
171
def add_entries(self, entries):
174
for sha, type, type_data in entries:
175
assert isinstance(type_data[0], str)
176
assert isinstance(type_data[1], str)
177
entry = (sha.decode("utf-8"), type_data[0].decode("utf-8"),
178
type_data[1].decode("utf-8"))
186
self.db.executemany("replace into trees (sha1, fileid, revid) values (?, ?, ?)", trees)
188
self.db.executemany("replace into blobs (sha1, fileid, revid) values (?, ?, ?)", blobs)
67
191
def add_entry(self, sha, type, type_data):
68
192
"""Add a new entry to the database.
71
195
assert isinstance(sha, str), "type was %r" % sha
72
196
if type == "commit":
73
197
self.db.execute("replace into commits (sha1, revid, tree_sha) values (?, ?, ?)", (sha, type_data[0], type_data[1]))
75
self.db.execute("replace into blobs (sha1, fileid, revid) values (?, ?, ?)", (sha, type_data[0], type_data[1]))
77
self.db.execute("replace into trees (sha1, fileid, revid) values (?, ?, ?)", (sha, type_data[0], type_data[1]))
198
elif type in ("blob", "tree"):
199
self.db.execute("replace into %ss (sha1, fileid, revid) values (?, ?, ?)" % type, (sha, type_data[0], type_data[1]))
79
201
raise AssertionError("Unknown type %s" % type)
203
def lookup_tree(self, fileid, revid):
204
row = self.db.execute("select sha1 from trees where fileid = ? and revid = ?", (fileid,revid)).fetchone()
206
raise KeyError((fileid, revid))
207
return row[0].encode("utf-8")
209
def lookup_blob(self, fileid, revid):
210
row = self.db.execute("select sha1 from blobs where fileid = ? and revid = ?", (fileid, revid)).fetchone()
212
raise KeyError((fileid, revid))
213
return row[0].encode("utf-8")
81
215
def lookup_git_sha(self, sha):
82
216
"""Lookup a Git sha in the database.
85
219
:return: (type, type_data) with type_data:
86
220
revision: revid, tree sha
222
def format(type, row):
223
return (type, (row[0].encode("utf-8"), row[1].encode("utf-8")))
88
224
row = self.db.execute("select revid, tree_sha from commits where sha1 = ?", (sha,)).fetchone()
89
225
if row is not None:
90
return ("commit", row)
226
return format("commit", row)
91
227
row = self.db.execute("select fileid, revid from blobs where sha1 = ?", (sha,)).fetchone()
92
228
if row is not None:
229
return format("blob", row)
94
230
row = self.db.execute("select fileid, revid from trees where sha1 = ?", (sha,)).fetchone()
95
231
if row is not None:
232
return format("tree", row)
97
233
raise KeyError(sha)
236
"""List the revision ids known."""
100
237
for row in self.db.execute("select revid from commits").fetchall():
238
yield row[0].encode("utf-8")
241
"""List the SHA1s."""
242
for table in ("blobs", "commits", "trees"):
243
for row in self.db.execute("select sha1 from %s" % table).fetchall():
244
yield row[0].encode("utf-8")
250
class TdbGitShaMap(GitShaMap):
251
"""SHA Map that uses a TDB database.
255
"git <sha1>" -> "<type> <type-data1> <type-data2>"
256
"commit revid" -> "<sha1> <tree-id>"
257
"tree fileid revid" -> "<sha1>"
258
"blob fileid revid" -> "<sha1>"
261
def __init__(self, path=None):
267
if not mapdbs().has_key(path):
268
mapdbs()[path] = tdb.open(path, 0, tdb.DEFAULT,
269
os.O_RDWR|os.O_CREAT)
270
self.db = mapdbs()[path]
271
if not "version" in self.db:
272
self.db["version"] = str(TDB_MAP_VERSION)
274
assert int(self.db["version"]) == TDB_MAP_VERSION
277
def from_repository(cls, repository):
279
return cls(os.path.join(repository._transport.local_abspath("."), "git.tdb"))
280
except bzrlib.errors.NotLocalUrl:
281
from bzrlib.config import config_dir
282
return cls(os.path.join(config_dir(), "remote-git.tdb"))
284
def lookup_commit(self, revid):
285
return self.db["commit %s" % revid].split(" ")[0]
290
def add_entry(self, sha, type, type_data):
291
"""Add a new entry to the database.
293
self.db["git %s" % sha] = "%s %s %s" % (type, type_data[0], type_data[1])
295
self.db["commit %s" % type_data[0]] = "%s %s" % (sha, type_data[1])
297
self.db["%s %s %s" % (type, type_data[0], type_data[1])] = sha
299
def lookup_tree(self, fileid, revid):
300
return self.db["tree %s %s" % (fileid, revid)]
302
def lookup_blob(self, fileid, revid):
303
return self.db["blob %s %s" % (fileid, revid)]
305
def lookup_git_sha(self, sha):
306
"""Lookup a Git sha in the database.
308
:param sha: Git object sha
309
:return: (type, type_data) with type_data:
310
revision: revid, tree sha
312
data = self.db["git %s" % sha].split(" ")
313
return (data[0], (data[1], data[2]))
316
"""List the revision ids known."""
317
for key in self.db.iterkeys():
318
if key.startswith("commit "):
319
yield key.split(" ")[1]
322
"""List the SHA1s."""
323
for key in self.db.iterkeys():
324
if key.startswith("git "):
325
yield key.split(" ")[1]