141
132
revs = self._revids_to_fetch()
145
self._fetch_weave_texts(revs)
147
self._fetch_inventory_weave(revs)
149
self._fetch_revision_texts(revs)
150
self.count_copied += len(revs)
133
self._fetch_everything_for_revisions(revs, pp)
137
def _fetch_everything_for_revisions(self, revs, pp):
138
"""Fetch all data for the given set of revisions."""
141
# The first phase is "file". We pass the progress bar for it directly
142
# into item_keys_introduced_by, which has more information about how
143
# that phase is progressing than we do. Progress updates for the other
144
# phases are taken care of in this function.
145
# XXX: there should be a clear owner of the progress reporting. Perhaps
146
# item_keys_introduced_by should have a richer API than it does at the
147
# moment, so that it can feed the progress information back to this
150
pb = bzrlib.ui.ui_factory.nested_progress_bar()
152
data_to_fetch = self.from_repository.item_keys_introduced_by(revs, pb)
153
for knit_kind, file_id, revisions in data_to_fetch:
154
if knit_kind != phase:
156
# Make a new progress bar for this phase
159
pb = bzrlib.ui.ui_factory.nested_progress_bar()
160
if knit_kind == "file":
161
self._fetch_weave_text(file_id, revisions)
162
elif knit_kind == "inventory":
164
# Once we've processed all the files, then we generate the root
165
# texts (if necessary), then we process the inventory. It's a
166
# bit distasteful to have knit_kind == "inventory" mean this,
167
# perhaps it should happen on the first non-"file" knit, in case
168
# it's not always inventory?
169
self._generate_root_texts(revs)
170
self._fetch_inventory_weave(revs, pb)
171
elif knit_kind == "signatures":
172
# Nothing to do here; this will be taken care of when
173
# _fetch_revision_texts happens.
175
elif knit_kind == "revisions":
176
self._fetch_revision_texts(revs, pb)
178
raise AssertionError("Unknown knit kind %r" % knit_kind)
182
self.count_copied += len(revs)
154
184
def _revids_to_fetch(self):
185
"""Determines the exact revisions needed from self.from_repository to
186
install self._last_revision in self.to_repository.
188
If no revisions need to be fetched, then this just returns None.
155
190
mutter('fetch up to rev {%s}', self._last_revision)
156
191
if self._last_revision is NULL_REVISION:
157
192
# explicit limit of no revisions needed
166
201
except errors.NoSuchRevision:
167
202
raise InstallFailed([self._last_revision])
169
def _fetch_weave_texts(self, revs):
170
texts_pb = bzrlib.ui.ui_factory.nested_progress_bar()
172
# fileids_altered_by_revision_ids requires reading the inventory
173
# weave, we will need to read the inventory weave again when
174
# all this is done, so enable caching for that specific weave
175
inv_w = self.from_repository.get_inventory_weave()
177
file_ids = self.from_repository.fileids_altered_by_revision_ids(revs)
179
num_file_ids = len(file_ids)
180
for file_id, required_versions in file_ids.items():
181
texts_pb.update("fetch texts", count, num_file_ids)
183
to_weave = self.to_weaves.get_weave_or_empty(file_id,
184
self.to_repository.get_transaction())
185
from_weave = self.from_weaves.get_weave(file_id,
186
self.from_repository.get_transaction())
187
# we fetch all the texts, because texts do
188
# not reference anything, and its cheap enough
189
to_weave.join(from_weave, version_ids=required_versions)
190
# we don't need *all* of this data anymore, but we dont know
191
# what we do. This cache clearing will result in a new read
192
# of the knit data when we do the checkout, but probably we
193
# want to emit the needed data on the fly rather than at the
195
# the from weave should know not to cache data being joined,
196
# but its ok to ask it to clear.
197
from_weave.clear_cache()
198
to_weave.clear_cache()
202
def _fetch_inventory_weave(self, revs):
203
pb = bzrlib.ui.ui_factory.nested_progress_bar()
205
pb.update("fetch inventory", 0, 2)
206
to_weave = self.to_control.get_weave('inventory',
207
self.to_repository.get_transaction())
209
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
211
# just merge, this is optimisable and its means we don't
212
# copy unreferenced data such as not-needed inventories.
213
pb.update("fetch inventory", 1, 3)
214
from_weave = self.from_repository.get_inventory_weave()
215
pb.update("fetch inventory", 2, 3)
216
# we fetch only the referenced inventories because we do not
217
# know for unselected inventories whether all their required
218
# texts are present in the other repository - it could be
220
to_weave.join(from_weave, pb=child_pb, msg='merge inventory',
222
from_weave.clear_cache()
204
def _fetch_weave_text(self, file_id, required_versions):
205
to_weave = self.to_weaves.get_weave_or_empty(file_id,
206
self.to_repository.get_transaction())
207
from_weave = self.from_weaves.get_weave(file_id,
208
self.from_repository.get_transaction())
209
# we fetch all the texts, because texts do
210
# not reference anything, and its cheap enough
211
to_weave.join(from_weave, version_ids=required_versions)
212
# we don't need *all* of this data anymore, but we dont know
213
# what we do. This cache clearing will result in a new read
214
# of the knit data when we do the checkout, but probably we
215
# want to emit the needed data on the fly rather than at the
217
# the from weave should know not to cache data being joined,
218
# but its ok to ask it to clear.
219
from_weave.clear_cache()
220
to_weave.clear_cache()
222
def _fetch_inventory_weave(self, revs, pb):
223
pb.update("fetch inventory", 0, 2)
224
to_weave = self.to_control.get_weave('inventory',
225
self.to_repository.get_transaction())
227
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
229
# just merge, this is optimisable and its means we don't
230
# copy unreferenced data such as not-needed inventories.
231
pb.update("fetch inventory", 1, 3)
232
from_weave = self.from_repository.get_inventory_weave()
233
pb.update("fetch inventory", 2, 3)
234
# we fetch only the referenced inventories because we do not
235
# know for unselected inventories whether all their required
236
# texts are present in the other repository - it could be
238
to_weave.join(from_weave, pb=child_pb, msg='merge inventory',
240
from_weave.clear_cache()
244
def _generate_root_texts(self, revs):
245
"""This will be called by __fetch between fetching weave texts and
246
fetching the inventory weave.
248
Subclasses should override this if they need to generate root texts
249
after fetching weave texts.
229
254
class GenericRepoFetcher(RepoFetcher):
230
255
"""This is a generic repo to repo fetcher.
233
258
It triggers a reconciliation after fetching to ensure integrity.
236
def _fetch_revision_texts(self, revs):
261
def _fetch_revision_texts(self, revs, pb):
237
262
"""Fetch revision object texts"""
238
rev_pb = bzrlib.ui.ui_factory.nested_progress_bar()
240
to_txn = self.to_transaction = self.to_repository.get_transaction()
243
to_store = self.to_repository._revision_store
245
pb = bzrlib.ui.ui_factory.nested_progress_bar()
247
pb.update('copying revisions', count, total)
249
sig_text = self.from_repository.get_signature_text(rev)
250
to_store.add_revision_signature_text(rev, sig_text, to_txn)
251
except errors.NoSuchRevision:
254
to_store.add_revision(self.from_repository.get_revision(rev),
259
# fixup inventory if needed:
260
# this is expensive because we have no inverse index to current ghosts.
261
# but on local disk its a few seconds and sftp push is already insane.
263
# FIXME: repository should inform if this is needed.
264
self.to_repository.reconcile()
263
to_txn = self.to_transaction = self.to_repository.get_transaction()
266
to_store = self.to_repository._revision_store
268
pb.update('copying revisions', count, total)
270
sig_text = self.from_repository.get_signature_text(rev)
271
to_store.add_revision_signature_text(rev, sig_text, to_txn)
272
except errors.NoSuchRevision:
275
to_store.add_revision(self.from_repository.get_revision(rev),
278
# fixup inventory if needed:
279
# this is expensive because we have no inverse index to current ghosts.
280
# but on local disk its a few seconds and sftp push is already insane.
282
# FIXME: repository should inform if this is needed.
283
self.to_repository.reconcile()
269
286
class KnitRepoFetcher(RepoFetcher):
382
397
KnitRepoFetcher.__init__(self, to_repository, from_repository,
383
398
last_revision, pb)
385
def _fetch_weave_texts(self, revs):
386
KnitRepoFetcher._fetch_weave_texts(self, revs)
387
# Now generate a weave for the tree root
400
def _generate_root_texts(self, revs):
388
401
self.helper.generate_root_texts(revs)
390
def _fetch_inventory_weave(self, revs):
403
def _fetch_inventory_weave(self, revs, pb):
391
404
self.helper.regenerate_inventory(revs)
394
class Fetcher(object):
395
"""Backwards compatibility glue for branch.fetch()."""
397
@deprecated_method(zero_eight)
398
def __init__(self, to_branch, from_branch, last_revision=None, pb=None):
399
"""Please see branch.fetch()."""
400
to_branch.fetch(from_branch, last_revision, pb)