79
73
count_copied -- number of revisions copied
81
This should not be used directory, its essential a object to encapsulate
75
This should not be used directly, it's essential a object to encapsulate
82
76
the logic in InterRepository.fetch().
84
def __init__(self, to_repository, from_repository, last_revision=None, pb=None):
79
def __init__(self, to_repository, from_repository, last_revision=None, pb=None,
81
"""Create a repo fetcher.
83
:param find_ghosts: If True search the entire history for ghosts.
85
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# result variables.
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86
self.failed_revisions = []
87
87
self.count_copied = 0
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if to_repository.control_files._transport.base == from_repository.control_files._transport.base:
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# check that last_revision is in 'from' and then return a no-operation.
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if last_revision not in (None, NULL_REVISION):
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from_repository.get_revision(last_revision)
88
if to_repository.has_same_location(from_repository):
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# repository.fetch should be taking care of this case.
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raise errors.BzrError('RepoFetcher run '
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'between two objects at the same location: '
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'%r and %r' % (to_repository, from_repository))
93
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self.to_repository = to_repository
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self.from_repository = from_repository
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# must not mutate self._last_revision as its potentially a shared instance
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self._last_revision = last_revision
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self.find_ghosts = find_ghosts
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self.pb = bzrlib.ui.ui_factory.nested_progress_bar()
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self.nested_pb = self.pb
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128
This initialises all the needed variables, and then fetches the
119
129
requested revisions, finally clearing the progress bar.
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self.to_weaves = self.to_repository.weave_store
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self.to_control = self.to_repository.control_weaves
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self.from_weaves = self.from_repository.weave_store
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self.from_control = self.from_repository.control_weaves
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131
self.count_total = 0
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self.file_ids_names = {}
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pp = ProgressPhase('fetch phase', 4, self.pb)
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pp = ProgressPhase('Transferring', 4, self.pb)
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revs = self._revids_to_fetch()
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self._fetch_weave_texts(revs)
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self._fetch_inventory_weave(revs)
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self._fetch_revision_texts(revs)
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self.count_copied += len(revs)
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search = self._revids_to_fetch()
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if getattr(self, '_fetch_everything_for_search', None) is not None:
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self._fetch_everything_for_search(search, pp)
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# backward compatibility
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self._fetch_everything_for_revisions(search.get_keys, pp)
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def _fetch_everything_for_search(self, search, pp):
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"""Fetch all data for the given set of revisions."""
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# The first phase is "file". We pass the progress bar for it directly
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# into item_keys_introduced_by, which has more information about how
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# that phase is progressing than we do. Progress updates for the other
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# phases are taken care of in this function.
153
# XXX: there should be a clear owner of the progress reporting. Perhaps
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# item_keys_introduced_by should have a richer API than it does at the
155
# moment, so that it can feed the progress information back to this
158
pb = bzrlib.ui.ui_factory.nested_progress_bar()
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revs = search.get_keys()
161
graph = self.from_repository.get_graph()
162
revs = list(graph.iter_topo_order(revs))
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data_to_fetch = self.from_repository.item_keys_introduced_by(revs,
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for knit_kind, file_id, revisions in data_to_fetch:
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if knit_kind != phase:
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# Make a new progress bar for this phase
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pb = bzrlib.ui.ui_factory.nested_progress_bar()
173
if knit_kind == "file":
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# Accumulate file texts
175
text_keys.extend([(file_id, revision) for revision in
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elif knit_kind == "inventory":
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# Now copy the file texts.
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to_texts = self.to_repository.texts
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from_texts = self.from_repository.texts
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to_texts.insert_record_stream(from_texts.get_record_stream(
182
text_keys, 'topological', False))
183
# Cause an error if a text occurs after we have done the
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# Before we process the inventory we generate the root
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# texts (if necessary) so that the inventories references
189
self._generate_root_texts(revs)
190
# NB: This currently reopens the inventory weave in source;
191
# using a single stream interface instead would avoid this.
192
self._fetch_inventory_weave(revs, pb)
193
elif knit_kind == "signatures":
194
# Nothing to do here; this will be taken care of when
195
# _fetch_revision_texts happens.
197
elif knit_kind == "revisions":
198
self._fetch_revision_texts(revs, pb)
200
raise AssertionError("Unknown knit kind %r" % knit_kind)
204
self.count_copied += len(revs)
142
206
def _revids_to_fetch(self):
207
"""Determines the exact revisions needed from self.from_repository to
208
install self._last_revision in self.to_repository.
210
If no revisions need to be fetched, then this just returns None.
143
212
mutter('fetch up to rev {%s}', self._last_revision)
144
213
if self._last_revision is NULL_REVISION:
145
214
# explicit limit of no revisions needed
147
if (self._last_revision != None and
216
if (self._last_revision is not None and
148
217
self.to_repository.has_revision(self._last_revision)):
152
return self.to_repository.missing_revision_ids(self.from_repository,
154
except errors.NoSuchRevision:
220
return self.to_repository.search_missing_revision_ids(
221
self.from_repository, self._last_revision,
222
find_ghosts=self.find_ghosts)
223
except errors.NoSuchRevision, e:
155
224
raise InstallFailed([self._last_revision])
157
def _fetch_weave_texts(self, revs):
158
texts_pb = bzrlib.ui.ui_factory.nested_progress_bar()
160
file_ids = self.from_repository.fileid_involved_by_set(revs)
162
num_file_ids = len(file_ids)
163
for file_id in file_ids:
164
texts_pb.update("fetch texts", count, num_file_ids)
167
to_weave = self.to_weaves.get_weave(file_id,
168
self.to_repository.get_transaction())
169
except errors.NoSuchFile:
170
# destination is empty, just copy it.
171
# this copies all the texts, which is useful and
172
# on per-file basis quite cheap.
173
self.to_weaves.copy_multi(
177
self.from_repository.get_transaction(),
178
self.to_repository.get_transaction())
180
# destination has contents, must merge
181
from_weave = self.from_weaves.get_weave(file_id,
182
self.from_repository.get_transaction())
183
# we fetch all the texts, because texts do
184
# not reference anything, and its cheap enough
185
to_weave.join(from_weave)
189
def _fetch_inventory_weave(self, revs):
190
pb = bzrlib.ui.ui_factory.nested_progress_bar()
192
pb.update("fetch inventory", 0, 2)
193
to_weave = self.to_control.get_weave('inventory',
194
self.to_repository.get_transaction())
196
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
198
# just merge, this is optimisable and its means we dont
199
# copy unreferenced data such as not-needed inventories.
200
pb.update("fetch inventory", 1, 3)
201
from_weave = self.from_repository.get_inventory_weave()
202
pb.update("fetch inventory", 2, 3)
203
# we fetch only the referenced inventories because we do not
204
# know for unselected inventories whether all their required
205
# texts are present in the other repository - it could be
207
to_weave.join(from_weave, pb=child_pb, msg='merge inventory',
226
def _fetch_inventory_weave(self, revs, pb):
227
pb.update("fetch inventory", 0, 2)
228
to_weave = self.to_repository.inventories
229
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
231
# just merge, this is optimisable and its means we don't
232
# copy unreferenced data such as not-needed inventories.
233
pb.update("fetch inventory", 1, 3)
234
from_weave = self.from_repository.inventories
235
pb.update("fetch inventory", 2, 3)
236
# we fetch only the referenced inventories because we do not
237
# know for unselected inventories whether all their required
238
# texts are present in the other repository - it could be
240
to_weave.insert_record_stream(from_weave.get_record_stream(
241
[(rev_id,) for rev_id in revs],
242
'topological', False))
246
def _generate_root_texts(self, revs):
247
"""This will be called by __fetch between fetching weave texts and
248
fetching the inventory weave.
250
Subclasses should override this if they need to generate root texts
251
after fetching weave texts.
215
256
class GenericRepoFetcher(RepoFetcher):
219
260
It triggers a reconciliation after fetching to ensure integrity.
222
def _fetch_revision_texts(self, revs):
263
def _fetch_revision_texts(self, revs, pb):
223
264
"""Fetch revision object texts"""
224
rev_pb = bzrlib.ui.ui_factory.nested_progress_bar()
226
to_txn = self.to_transaction = self.to_repository.get_transaction()
229
to_store = self.to_repository._revision_store
231
pb = bzrlib.ui.ui_factory.nested_progress_bar()
233
pb.update('copying revisions', count, total)
235
sig_text = self.from_repository.get_signature_text(rev)
236
to_store.add_revision_signature_text(rev, sig_text, to_txn)
237
except errors.NoSuchRevision:
240
to_store.add_revision(self.from_repository.get_revision(rev),
245
# fixup inventory if needed:
246
# this is expensive because we have no inverse index to current ghosts.
247
# but on local disk its a few seconds and sftp push is already insane.
249
# FIXME: repository should inform if this is needed.
250
self.to_repository.reconcile()
268
pb.update('copying revisions', count, total)
270
sig_text = self.from_repository.get_signature_text(rev)
271
self.to_repository.add_signature_text(rev, sig_text)
272
except errors.NoSuchRevision:
275
self._copy_revision(rev)
277
# fixup inventory if needed:
278
# this is expensive because we have no inverse index to current ghosts.
279
# but on local disk its a few seconds and sftp push is already insane.
281
# FIXME: repository should inform if this is needed.
282
self.to_repository.reconcile()
284
def _copy_revision(self, rev_id):
285
rev = self.from_repository.get_revision(rev_id)
286
self.to_repository.add_revision(rev_id, rev)
255
289
class KnitRepoFetcher(RepoFetcher):
256
290
"""This is a knit format repository specific fetcher.
260
294
copy revision texts.
263
def _fetch_revision_texts(self, revs):
297
def _fetch_revision_texts(self, revs, pb):
264
298
# may need to be a InterRevisionStore call here.
265
from_transaction = self.from_repository.get_transaction()
266
to_transaction = self.to_repository.get_transaction()
267
to_sf = self.to_repository._revision_store.get_signature_file(
269
from_sf = self.from_repository._revision_store.get_signature_file(
271
to_sf.join(from_sf, version_ids=revs, ignore_missing=True)
272
to_rf = self.to_repository._revision_store.get_revision_file(
274
from_rf = self.from_repository._revision_store.get_revision_file(
276
to_rf.join(from_rf, version_ids=revs)
279
class Fetcher(object):
280
"""Backwards compatability glue for branch.fetch()."""
282
@deprecated_method(zero_eight)
283
def __init__(self, to_branch, from_branch, last_revision=None, pb=None):
284
"""Please see branch.fetch()."""
285
to_branch.fetch(from_branch, last_revision, pb)
299
to_sf = self.to_repository.signatures
300
from_sf = self.from_repository.signatures
301
# A missing signature is just skipped.
302
to_sf.insert_record_stream(filter_absent(from_sf.get_record_stream(
303
[(rev_id,) for rev_id in revs],
304
'unordered', False)))
305
self._fetch_just_revision_texts(revs)
307
def _fetch_just_revision_texts(self, version_ids):
308
to_rf = self.to_repository.revisions
309
from_rf = self.from_repository.revisions
310
to_rf.insert_record_stream(from_rf.get_record_stream(
311
[(rev_id,) for rev_id in version_ids],
312
'topological', False))
315
class Inter1and2Helper(object):
316
"""Helper for operations that convert data from model 1 and 2
318
This is for use by fetchers and converters.
321
def __init__(self, source, target):
324
:param source: The repository data comes from
325
:param target: The repository data goes to
330
def iter_rev_trees(self, revs):
331
"""Iterate through RevisionTrees efficiently.
333
Additionally, the inventory's revision_id is set if unset.
335
Trees are retrieved in batches of 100, and then yielded in the order
338
:param revs: A list of revision ids
340
# In case that revs is not a list.
343
for tree in self.source.revision_trees(revs[:100]):
344
if tree.inventory.revision_id is None:
345
tree.inventory.revision_id = tree.get_revision_id()
349
def _find_root_ids(self, revs, parent_map, graph):
351
planned_versions = {}
352
for tree in self.iter_rev_trees(revs):
353
revision_id = tree.inventory.root.revision
354
root_id = tree.get_root_id()
355
planned_versions.setdefault(root_id, []).append(revision_id)
356
revision_root[revision_id] = root_id
357
# Find out which parents we don't already know root ids for
359
for revision_parents in parent_map.itervalues():
360
parents.update(revision_parents)
361
parents.difference_update(revision_root.keys() + [NULL_REVISION])
362
# Limit to revisions present in the versionedfile
363
parents = graph.get_parent_map(parents).keys()
364
for tree in self.iter_rev_trees(parents):
365
root_id = tree.get_root_id()
366
revision_root[tree.get_revision_id()] = root_id
367
return revision_root, planned_versions
369
def generate_root_texts(self, revs):
370
"""Generate VersionedFiles for all root ids.
372
:param revs: the revisions to include
374
to_texts = self.target.texts
375
graph = self.source.get_graph()
376
parent_map = graph.get_parent_map(revs)
377
rev_order = topo_sort(parent_map)
378
rev_id_to_root_id, root_id_to_rev_ids = self._find_root_ids(
379
revs, parent_map, graph)
380
root_id_order = [(rev_id_to_root_id[rev_id], rev_id) for rev_id in
382
# Guaranteed stable, this groups all the file id operations together
383
# retaining topological order within the revisions of a file id.
384
# File id splits and joins would invalidate this, but they don't exist
385
# yet, and are unlikely to in non-rich-root environments anyway.
386
root_id_order.sort(key=operator.itemgetter(0))
387
# Create a record stream containing the roots to create.
389
for key in root_id_order:
390
root_id, rev_id = key
391
rev_parents = parent_map[rev_id]
392
# We drop revision parents with different file-ids, because
393
# that represents a rename of the root to a different location
394
# - its not actually a parent for us. (We could look for that
395
# file id in the revision tree at considerably more expense,
396
# but for now this is sufficient (and reconcile will catch and
397
# correct this anyway).
398
# When a parent revision is a ghost, we guess that its root id
399
# was unchanged (rather than trimming it from the parent list).
400
parent_keys = tuple((root_id, parent) for parent in rev_parents
401
if parent != NULL_REVISION and
402
rev_id_to_root_id.get(parent, root_id) == root_id)
403
yield FulltextContentFactory(key, parent_keys, None, '')
404
to_texts.insert_record_stream(yield_roots())
406
def regenerate_inventory(self, revs):
407
"""Generate a new inventory versionedfile in target, convertin data.
409
The inventory is retrieved from the source, (deserializing it), and
410
stored in the target (reserializing it in a different format).
411
:param revs: The revisions to include
413
for tree in self.iter_rev_trees(revs):
414
parents = tree.get_parent_ids()
415
self.target.add_inventory(tree.get_revision_id(), tree.inventory,
418
def fetch_revisions(self, revision_ids):
419
for revision in self.source.get_revisions(revision_ids):
420
self.target.add_revision(revision.revision_id, revision)
423
class Model1toKnit2Fetcher(GenericRepoFetcher):
424
"""Fetch from a Model1 repository into a Knit2 repository
426
def __init__(self, to_repository, from_repository, last_revision=None,
427
pb=None, find_ghosts=True):
428
self.helper = Inter1and2Helper(from_repository, to_repository)
429
GenericRepoFetcher.__init__(self, to_repository, from_repository,
430
last_revision, pb, find_ghosts)
432
def _generate_root_texts(self, revs):
433
self.helper.generate_root_texts(revs)
435
def _fetch_inventory_weave(self, revs, pb):
436
self.helper.regenerate_inventory(revs)
438
def _copy_revision(self, rev):
439
self.helper.fetch_revisions([rev])
442
class Knit1to2Fetcher(KnitRepoFetcher):
443
"""Fetch from a Knit1 repository into a Knit2 repository"""
445
def __init__(self, to_repository, from_repository, last_revision=None,
446
pb=None, find_ghosts=True):
447
self.helper = Inter1and2Helper(from_repository, to_repository)
448
KnitRepoFetcher.__init__(self, to_repository, from_repository,
449
last_revision, pb, find_ghosts)
451
def _generate_root_texts(self, revs):
452
self.helper.generate_root_texts(revs)
454
def _fetch_inventory_weave(self, revs, pb):
455
self.helper.regenerate_inventory(revs)
457
def _fetch_just_revision_texts(self, version_ids):
458
self.helper.fetch_revisions(version_ids)