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count_copied -- number of revisions copied
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This should not be used directory, its essential a object to encapsulate
74
This should not be used directly, it's essential a object to encapsulate
82
75
the logic in InterRepository.fetch().
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def __init__(self, to_repository, from_repository, last_revision=None, pb=None):
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def __init__(self, to_repository, from_repository, last_revision=None, pb=None,
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"""Create a repo fetcher.
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:param find_ghosts: If True search the entire history for ghosts.
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# result variables.
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self.failed_revisions = []
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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)
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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))
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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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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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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.
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# 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
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# moment, so that it can feed the progress information back to this
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pb = bzrlib.ui.ui_factory.nested_progress_bar()
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revs = search.get_keys()
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data_to_fetch = self.from_repository.item_keys_introduced_by(revs, pb)
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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()
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if knit_kind == "file":
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self._fetch_weave_text(file_id, revisions)
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elif knit_kind == "inventory":
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# Once we've processed all the files, then we generate the root
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# texts (if necessary), then we process the inventory. It's a
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# bit distasteful to have knit_kind == "inventory" mean this,
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# perhaps it should happen on the first non-"file" knit, in case
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# it's not always inventory?
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self._generate_root_texts(revs)
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self._fetch_inventory_weave(revs, pb)
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elif knit_kind == "signatures":
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# Nothing to do here; this will be taken care of when
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# _fetch_revision_texts happens.
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elif knit_kind == "revisions":
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self._fetch_revision_texts(revs, pb)
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raise AssertionError("Unknown knit kind %r" % knit_kind)
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self.count_copied += len(revs)
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def _revids_to_fetch(self):
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"""Determines the exact revisions needed from self.from_repository to
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install self._last_revision in self.to_repository.
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If no revisions need to be fetched, then this just returns None.
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mutter('fetch up to rev {%s}', self._last_revision)
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if self._last_revision is NULL_REVISION:
145
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# explicit limit of no revisions needed
147
if (self._last_revision != None and
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if (self._last_revision is not None and
148
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self.to_repository.has_revision(self._last_revision)):
152
return self.to_repository.missing_revision_ids(self.from_repository,
206
return self.to_repository.search_missing_revision_ids(
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self.from_repository, self._last_revision,
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find_ghosts=self.find_ghosts)
154
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except errors.NoSuchRevision:
155
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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',
212
def _fetch_weave_text(self, file_id, required_versions):
213
to_weave = self.to_weaves.get_weave_or_empty(file_id,
214
self.to_repository.get_transaction())
215
from_weave = self.from_weaves.get_weave(file_id,
216
self.from_repository.get_transaction())
217
# we fetch all the texts, because texts do
218
# not reference anything, and its cheap enough
219
to_weave.join(from_weave, version_ids=required_versions)
220
# we don't need *all* of this data anymore, but we dont know
221
# what we do. This cache clearing will result in a new read
222
# of the knit data when we do the checkout, but probably we
223
# want to emit the needed data on the fly rather than at the
225
# the from weave should know not to cache data being joined,
226
# but its ok to ask it to clear.
227
from_weave.clear_cache()
228
to_weave.clear_cache()
230
def _fetch_inventory_weave(self, revs, pb):
231
pb.update("fetch inventory", 0, 2)
232
to_weave = self.to_repository.get_inventory_weave()
233
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
235
# just merge, this is optimisable and its means we don't
236
# copy unreferenced data such as not-needed inventories.
237
pb.update("fetch inventory", 1, 3)
238
from_weave = self.from_repository.get_inventory_weave()
239
pb.update("fetch inventory", 2, 3)
240
# we fetch only the referenced inventories because we do not
241
# know for unselected inventories whether all their required
242
# texts are present in the other repository - it could be
244
to_weave.join(from_weave, pb=child_pb, msg='merge inventory',
246
from_weave.clear_cache()
250
def _generate_root_texts(self, revs):
251
"""This will be called by __fetch between fetching weave texts and
252
fetching the inventory weave.
254
Subclasses should override this if they need to generate root texts
255
after fetching weave texts.
215
260
class GenericRepoFetcher(RepoFetcher):
219
264
It triggers a reconciliation after fetching to ensure integrity.
222
def _fetch_revision_texts(self, revs):
267
def _fetch_revision_texts(self, revs, pb):
223
268
"""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()
269
to_txn = self.to_transaction = self.to_repository.get_transaction()
272
to_store = self.to_repository._revision_store
274
pb.update('copying revisions', count, total)
276
sig_text = self.from_repository.get_signature_text(rev)
277
to_store.add_revision_signature_text(rev, sig_text, to_txn)
278
except errors.NoSuchRevision:
281
to_store.add_revision(self.from_repository.get_revision(rev),
284
# fixup inventory if needed:
285
# this is expensive because we have no inverse index to current ghosts.
286
# but on local disk its a few seconds and sftp push is already insane.
288
# FIXME: repository should inform if this is needed.
289
self.to_repository.reconcile()
255
292
class KnitRepoFetcher(RepoFetcher):
276
313
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)
316
class Inter1and2Helper(object):
317
"""Helper for operations that convert data from model 1 and 2
319
This is for use by fetchers and converters.
322
def __init__(self, source, target):
325
:param source: The repository data comes from
326
:param target: The repository data goes to
331
def iter_rev_trees(self, revs):
332
"""Iterate through RevisionTrees efficiently.
334
Additionally, the inventory's revision_id is set if unset.
336
Trees are retrieved in batches of 100, and then yielded in the order
339
:param revs: A list of revision ids
341
# In case that revs is not a list.
344
for tree in self.source.revision_trees(revs[:100]):
345
if tree.inventory.revision_id is None:
346
tree.inventory.revision_id = tree.get_revision_id()
350
def generate_root_texts(self, revs):
351
"""Generate VersionedFiles for all root ids.
353
:param revs: the revisions to include
355
inventory_weave = self.source.get_inventory_weave()
358
to_store = self.target.weave_store
359
for tree in self.iter_rev_trees(revs):
360
revision_id = tree.inventory.root.revision
361
root_id = tree.get_root_id()
362
parents = inventory_weave.get_parents(revision_id)
363
if root_id not in versionedfile:
364
versionedfile[root_id] = to_store.get_weave_or_empty(root_id,
365
self.target.get_transaction())
366
_, _, parent_texts[root_id] = versionedfile[root_id].add_lines(
367
revision_id, parents, [], parent_texts)
369
def regenerate_inventory(self, revs):
370
"""Generate a new inventory versionedfile in target, convertin data.
372
The inventory is retrieved from the source, (deserializing it), and
373
stored in the target (reserializing it in a different format).
374
:param revs: The revisions to include
376
for tree in self.iter_rev_trees(revs):
377
parents = tree.get_parent_ids()
378
self.target.add_inventory(tree.get_revision_id(), tree.inventory,
382
class Model1toKnit2Fetcher(GenericRepoFetcher):
383
"""Fetch from a Model1 repository into a Knit2 repository
385
def __init__(self, to_repository, from_repository, last_revision=None,
386
pb=None, find_ghosts=True):
387
self.helper = Inter1and2Helper(from_repository, to_repository)
388
GenericRepoFetcher.__init__(self, to_repository, from_repository,
389
last_revision, pb, find_ghosts)
391
def _generate_root_texts(self, revs):
392
self.helper.generate_root_texts(revs)
394
def _fetch_inventory_weave(self, revs, pb):
395
self.helper.regenerate_inventory(revs)
398
class Knit1to2Fetcher(KnitRepoFetcher):
399
"""Fetch from a Knit1 repository into a Knit2 repository"""
401
def __init__(self, to_repository, from_repository, last_revision=None,
402
pb=None, find_ghosts=True):
403
self.helper = Inter1and2Helper(from_repository, to_repository)
404
KnitRepoFetcher.__init__(self, to_repository, from_repository,
405
last_revision, pb, find_ghosts)
407
def _generate_root_texts(self, revs):
408
self.helper.generate_root_texts(revs)
410
def _fetch_inventory_weave(self, revs, pb):
411
self.helper.regenerate_inventory(revs)
414
class RemoteToOtherFetcher(GenericRepoFetcher):
416
def _fetch_everything_for_search(self, search, pp):
417
data_stream = self.from_repository.get_data_stream_for_search(search)
418
self.to_repository.insert_data_stream(data_stream)