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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
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This should not be used directly, it's essential a object to encapsulate
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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:
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# explicit limit of no revisions needed
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if (self._last_revision is not None and
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self.to_repository.has_revision(self._last_revision)):
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return self.to_repository.missing_revision_ids(self.from_repository,
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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)
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except errors.NoSuchRevision:
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raise InstallFailed([self._last_revision])
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def _fetch_weave_texts(self, revs):
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texts_pb = bzrlib.ui.ui_factory.nested_progress_bar()
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# fileids_altered_by_revision_ids requires reading the inventory
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# weave, we will need to read the inventory weave again when
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# all this is done, so enable caching for that specific weave
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inv_w = self.from_repository.get_inventory_weave()
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file_ids = self.from_repository.fileids_altered_by_revision_ids(revs)
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num_file_ids = len(file_ids)
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for file_id, required_versions in file_ids.items():
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texts_pb.update("fetch texts", count, num_file_ids)
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to_weave = self.to_weaves.get_weave_or_empty(file_id,
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self.to_repository.get_transaction())
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from_weave = self.from_weaves.get_weave(file_id,
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self.from_repository.get_transaction())
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# we fetch all the texts, because texts do
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# not reference anything, and its cheap enough
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to_weave.join(from_weave, version_ids=required_versions)
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# we don't need *all* of this data anymore, but we dont know
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# what we do. This cache clearing will result in a new read
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# of the knit data when we do the checkout, but probably we
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# want to emit the needed data on the fly rather than at the
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# the from weave should know not to cache data being joined,
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# but its ok to ask it to clear.
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from_weave.clear_cache()
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to_weave.clear_cache()
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def _fetch_inventory_weave(self, revs):
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pb = bzrlib.ui.ui_factory.nested_progress_bar()
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pb.update("fetch inventory", 0, 2)
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to_weave = self.to_control.get_weave('inventory',
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self.to_repository.get_transaction())
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child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
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# just merge, this is optimisable and its means we don't
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# copy unreferenced data such as not-needed inventories.
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pb.update("fetch inventory", 1, 3)
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from_weave = self.from_repository.get_inventory_weave()
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pb.update("fetch inventory", 2, 3)
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# we fetch only the referenced inventories because we do not
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# know for unselected inventories whether all their required
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# texts are present in the other repository - it could be
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to_weave.join(from_weave, pb=child_pb, msg='merge inventory',
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from_weave.clear_cache()
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def _fetch_weave_text(self, file_id, required_versions):
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to_weave = self.to_weaves.get_weave_or_empty(file_id,
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self.to_repository.get_transaction())
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from_weave = self.from_weaves.get_weave(file_id,
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self.from_repository.get_transaction())
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# we fetch all the texts, because texts do
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# not reference anything, and its cheap enough
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to_weave.join(from_weave, version_ids=required_versions)
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# we don't need *all* of this data anymore, but we dont know
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# what we do. This cache clearing will result in a new read
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# of the knit data when we do the checkout, but probably we
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# want to emit the needed data on the fly rather than at the
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# the from weave should know not to cache data being joined,
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# but its ok to ask it to clear.
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from_weave.clear_cache()
228
to_weave.clear_cache()
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def _fetch_inventory_weave(self, revs, pb):
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pb.update("fetch inventory", 0, 2)
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to_weave = self.to_repository.get_inventory_weave()
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child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
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# just merge, this is optimisable and its means we don't
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# copy unreferenced data such as not-needed inventories.
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pb.update("fetch inventory", 1, 3)
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from_weave = self.from_repository.get_inventory_weave()
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pb.update("fetch inventory", 2, 3)
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# we fetch only the referenced inventories because we do not
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# 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.
221
260
class GenericRepoFetcher(RepoFetcher):
225
264
It triggers a reconciliation after fetching to ensure integrity.
228
def _fetch_revision_texts(self, revs):
267
def _fetch_revision_texts(self, revs, pb):
229
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"""Fetch revision object texts"""
230
rev_pb = bzrlib.ui.ui_factory.nested_progress_bar()
232
to_txn = self.to_transaction = self.to_repository.get_transaction()
235
to_store = self.to_repository._revision_store
237
pb = bzrlib.ui.ui_factory.nested_progress_bar()
239
pb.update('copying revisions', count, total)
241
sig_text = self.from_repository.get_signature_text(rev)
242
to_store.add_revision_signature_text(rev, sig_text, to_txn)
243
except errors.NoSuchRevision:
246
to_store.add_revision(self.from_repository.get_revision(rev),
251
# fixup inventory if needed:
252
# this is expensive because we have no inverse index to current ghosts.
253
# but on local disk its a few seconds and sftp push is already insane.
255
# FIXME: repository should inform if this is needed.
256
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()
261
292
class KnitRepoFetcher(RepoFetcher):
350
382
class Model1toKnit2Fetcher(GenericRepoFetcher):
351
383
"""Fetch from a Model1 repository into a Knit2 repository
353
def __init__(self, to_repository, from_repository, last_revision=None,
385
def __init__(self, to_repository, from_repository, last_revision=None,
386
pb=None, find_ghosts=True):
355
387
self.helper = Inter1and2Helper(from_repository, to_repository)
356
388
GenericRepoFetcher.__init__(self, to_repository, from_repository,
389
last_revision, pb, find_ghosts)
359
def _fetch_weave_texts(self, revs):
360
GenericRepoFetcher._fetch_weave_texts(self, revs)
361
# Now generate a weave for the tree root
391
def _generate_root_texts(self, revs):
362
392
self.helper.generate_root_texts(revs)
364
def _fetch_inventory_weave(self, revs):
394
def _fetch_inventory_weave(self, revs, pb):
365
395
self.helper.regenerate_inventory(revs)
369
399
"""Fetch from a Knit1 repository into a Knit2 repository"""
371
401
def __init__(self, to_repository, from_repository, last_revision=None,
402
pb=None, find_ghosts=True):
373
403
self.helper = Inter1and2Helper(from_repository, to_repository)
374
404
KnitRepoFetcher.__init__(self, to_repository, from_repository,
405
last_revision, pb, find_ghosts)
377
def _fetch_weave_texts(self, revs):
378
KnitRepoFetcher._fetch_weave_texts(self, revs)
379
# Now generate a weave for the tree root
407
def _generate_root_texts(self, revs):
380
408
self.helper.generate_root_texts(revs)
382
def _fetch_inventory_weave(self, revs):
410
def _fetch_inventory_weave(self, revs, pb):
383
411
self.helper.regenerate_inventory(revs)
386
class Fetcher(object):
387
"""Backwards compatibility glue for branch.fetch()."""
389
@deprecated_method(zero_eight)
390
def __init__(self, to_branch, from_branch, last_revision=None, pb=None):
391
"""Please see branch.fetch()."""
392
to_branch.fetch(from_branch, last_revision, pb)
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)