60
58
# and add in all file versions
63
@deprecated_function(zero_eight)
64
62
def greedy_fetch(to_branch, from_branch, revision=None, pb=None):
65
"""Legacy API, please see branch.fetch(from_branch, last_revision, pb)."""
66
63
f = Fetcher(to_branch, from_branch, revision, pb)
67
64
return f.count_copied, f.failed_revisions
72
class RepoFetcher(object):
73
"""Pull revisions and texts from one repository to another.
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if set, try to limit to the data this revision references.
68
class Fetcher(object):
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"""Pull revisions and texts from one branch to another.
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This doesn't update the destination's history; that can be done
72
separately if desired.
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If set, pull only up to this revision_id.
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last_revision -- if last_revision
80
is given it will be that, otherwise the last revision of
79
83
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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the logic in InterRepository.fetch().
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count_texts -- number of file texts copied
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def __init__(self, to_repository, from_repository, last_revision=None, pb=None):
87
def __init__(self, to_branch, from_branch, last_revision=None, pb=None):
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self.to_branch = to_branch
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self.to_weaves = to_branch.weave_store
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self.to_control = to_branch.control_weaves
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self.from_branch = from_branch
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self.from_weaves = from_branch.weave_store
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self.from_control = from_branch.control_weaves
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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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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.pb = bzrlib.ui.ui_factory.nested_progress_bar()
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self.nested_pb = self.pb
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self.pb = bzrlib.ui.ui_factory.progress_bar()
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self.nested_pb = None
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self.from_repository.lock_read()
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self.to_repository.lock_write()
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if self.nested_pb is not None:
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self.nested_pb.finished()
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self.to_repository.unlock()
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self.from_repository.unlock()
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"""Primary worker function.
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This initialises all the needed variables, and then fetches the
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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.file_ids_names = {}
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pp = ProgressPhase('fetch phase', 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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def _revids_to_fetch(self):
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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 != None and
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self.to_repository.has_revision(self._last_revision)):
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self.last_revision = self._find_last_revision(last_revision)
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mutter('fetch up to rev {%s}', self.last_revision)
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revs_to_fetch = self._compare_ancestries()
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self._copy_revisions(revs_to_fetch)
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self.new_ancestry = revs_to_fetch
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def _find_last_revision(self, last_revision):
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"""Find the limiting source revision.
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Every ancestor of that revision will be merged across.
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Returns the revision_id, or returns None if there's no history
116
in the source branch."""
117
self.pb.update('get source history')
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from_history = self.from_branch.revision_history()
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self.pb.update('get destination history')
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if last_revision not in from_history:
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raise NoSuchRevision(self.from_branch, last_revision)
126
return from_history[-1]
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return None # no history in the source branch
152
return self.to_repository.missing_revision_ids(self.from_repository,
154
except errors.NoSuchRevision:
155
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)
166
to_weave = self.to_weaves.get_weave_or_empty(file_id,
167
self.to_repository.get_transaction())
168
from_weave = self.from_weaves.get_weave(file_id,
169
self.from_repository.get_transaction())
170
# we fetch all the texts, because texts do
171
# not reference anything, and its cheap enough
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to_weave.join(from_weave)
176
def _fetch_inventory_weave(self, revs):
177
pb = bzrlib.ui.ui_factory.nested_progress_bar()
179
pb.update("fetch inventory", 0, 2)
180
to_weave = self.to_control.get_weave('inventory',
181
self.to_repository.get_transaction())
183
child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
185
# just merge, this is optimisable and its means we dont
186
# copy unreferenced data such as not-needed inventories.
187
pb.update("fetch inventory", 1, 3)
188
from_weave = self.from_repository.get_inventory_weave()
189
pb.update("fetch inventory", 2, 3)
190
# we fetch only the referenced inventories because we do not
191
# know for unselected inventories whether all their required
192
# texts are present in the other repository - it could be
194
to_weave.join(from_weave, pb=child_pb, msg='merge inventory',
202
class GenericRepoFetcher(RepoFetcher):
203
"""This is a generic repo to repo fetcher.
205
This makes minimal assumptions about repo layout and contents.
206
It triggers a reconciliation after fetching to ensure integrity.
209
def _fetch_revision_texts(self, revs):
210
"""Fetch revision object texts"""
211
rev_pb = bzrlib.ui.ui_factory.nested_progress_bar()
213
to_txn = self.to_transaction = self.to_repository.get_transaction()
216
to_store = self.to_repository._revision_store
218
pb = bzrlib.ui.ui_factory.nested_progress_bar()
220
pb.update('copying revisions', count, total)
222
sig_text = self.from_repository.get_signature_text(rev)
223
to_store.add_revision_signature_text(rev, sig_text, to_txn)
224
except errors.NoSuchRevision:
227
to_store.add_revision(self.from_repository.get_revision(rev),
232
# fixup inventory if needed:
233
# this is expensive because we have no inverse index to current ghosts.
234
# but on local disk its a few seconds and sftp push is already insane.
236
# FIXME: repository should inform if this is needed.
237
self.to_repository.reconcile()
242
class KnitRepoFetcher(RepoFetcher):
243
"""This is a knit format repository specific fetcher.
245
This differs from the GenericRepoFetcher by not doing a
246
reconciliation after copying, and using knit joining to
250
def _fetch_revision_texts(self, revs):
251
# may need to be a InterRevisionStore call here.
252
from_transaction = self.from_repository.get_transaction()
253
to_transaction = self.to_repository.get_transaction()
254
to_sf = self.to_repository._revision_store.get_signature_file(
256
from_sf = self.from_repository._revision_store.get_signature_file(
258
to_sf.join(from_sf, version_ids=revs, ignore_missing=True)
259
to_rf = self.to_repository._revision_store.get_revision_file(
261
from_rf = self.from_repository._revision_store.get_revision_file(
263
to_rf.join(from_rf, version_ids=revs)
266
class Fetcher(object):
267
"""Backwards compatability glue for branch.fetch()."""
269
@deprecated_method(zero_eight)
270
def __init__(self, to_branch, from_branch, last_revision=None, pb=None):
271
"""Please see branch.fetch()."""
272
to_branch.fetch(from_branch, last_revision, pb)
131
def _compare_ancestries(self):
132
"""Get a list of revisions that must be copied.
134
That is, every revision that's in the ancestry of the source
135
branch and not in the destination branch."""
136
self.pb.update('get source ancestry')
137
self.from_ancestry = self.from_branch.get_ancestry(self.last_revision)
139
dest_last_rev = self.to_branch.last_revision()
140
self.pb.update('get destination ancestry')
142
dest_ancestry = self.to_branch.get_ancestry(dest_last_rev)
145
ss = set(dest_ancestry)
147
for rev_id in self.from_ancestry:
149
to_fetch.append(rev_id)
150
mutter('need to get revision {%s}', rev_id)
151
mutter('need to get %d revisions in total', len(to_fetch))
152
self.count_total = len(to_fetch)
157
def _copy_revisions(self, revs_to_fetch):
159
for rev_id in revs_to_fetch:
161
if self.to_branch.has_revision(rev_id):
163
self.pb.update('fetch revision', i, self.count_total)
164
self._copy_one_revision(rev_id)
165
self.count_copied += 1
168
def _copy_one_revision(self, rev_id):
169
"""Copy revision and everything referenced by it."""
170
mutter('copying revision {%s}', rev_id)
171
rev_xml = self.from_branch.get_revision_xml(rev_id)
172
inv_xml = self.from_branch.get_inventory_xml(rev_id)
173
rev = serializer_v5.read_revision_from_string(rev_xml)
174
inv = serializer_v5.read_inventory_from_string(inv_xml)
175
assert rev.revision_id == rev_id
176
assert rev.inventory_sha1 == sha_string(inv_xml)
177
mutter(' commiter %s, %d parents',
180
self._copy_new_texts(rev_id, inv)
181
self._copy_inventory(rev_id, inv_xml, rev.parent_ids)
182
self._copy_ancestry(rev_id, rev.parent_ids)
183
self.to_branch.revision_store.add(StringIO(rev_xml), rev_id)
186
def _copy_inventory(self, rev_id, inv_xml, parent_ids):
187
self.to_control.add_text('inventory', rev_id,
188
split_lines(inv_xml), parent_ids)
191
def _copy_ancestry(self, rev_id, parent_ids):
192
ancestry_lines = self.from_control.get_lines('ancestry', rev_id)
193
self.to_control.add_text('ancestry', rev_id, ancestry_lines,
197
def _copy_new_texts(self, rev_id, inv):
198
"""Copy any new texts occuring in this revision."""
199
# TODO: Rather than writing out weaves every time, hold them
200
# in memory until everything's done? But this way is nicer
201
# if it's interrupted.
202
for path, ie in inv.iter_entries():
203
if ie.kind != 'file':
205
if ie.text_version != rev_id:
207
mutter('%s {%s} is changed in this revision',
209
self._copy_one_text(rev_id, ie.file_id)
212
def _copy_one_text(self, rev_id, file_id):
213
"""Copy one file text."""
214
mutter('copy text version {%s} of file {%s}',
216
from_weave = self.from_weaves.get_weave(file_id)
217
from_idx = from_weave.lookup(rev_id)
218
from_parents = map(from_weave.idx_to_name, from_weave.parents(from_idx))
219
text_lines = from_weave.get(from_idx)
220
to_weave = self.to_weaves.get_weave_or_empty(file_id)
221
to_parents = map(to_weave.lookup, from_parents)
222
# it's ok to add even if the text is already there
223
to_weave.add(rev_id, to_parents, text_lines)
224
self.to_weaves.put_weave(file_id, to_weave)
225
self.count_texts += 1