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wireprotov2: define and implement "manifestdata" command...
wireprotov2: define and implement "manifestdata" command The added command can be used for obtaining manifest data. Given a manifest path and set of manifest nodes, data about manifests can be retrieved. Unlike changeset data, we wish to emit deltas to describe manifest revisions. So the command uses the relatively new API for building delta requests and emitting them. The code calls into deltaparent(), which I'm not very keen of. There's still work to be done in delta generation land so implementation details of storage (e.g. exactly one delta is stored/available) don't creep into higher levels. But we can worry about this later (there is already a TODO on imanifestorage tracking this). On the subject of parent deltas, the server assumes parent revisions exist on the receiving end. This is obviously wrong for shallow clone. I've added TODOs to add a mechanism to the command to allow clients to specify desired behavior. This shouldn't be too difficult to implement. Another big change is that the client must explicitly request manifest nodes to retrieve. This is a major departure from "getbundle," where the server derives relevant manifests as it iterates changesets and sends them automatically. As implemented, the client must transmit each requested node to the server. At 20 bytes per node, we're looking at 2 MB per 100,000 nodes. Plus wire encoding overhead. This isn't ideal for clients with limited upload bandwidth. I plan to address this in the future by allowing alternate mechanisms for defining the revisions to retrieve. One idea is to define a range of changeset revisions whose manifest revisions to retrieve (similar to how "changesetdata" works). We almost certainly want an API to look up an individual manifest by node. And that's where I've chosen to start with the implementation. Again, a theme of this early exchangev2 work is I want to start by building primitives for accessing raw repository data first and see how far we can get with those before we need more complexity. Differential Revision: https://phab.mercurial-scm.org/D4488

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test-filelog.py
63 lines | 1.6 KiB | text/x-python | PythonLexer
Mads Kiilerich
tests: test test-filelog is python - rename to test-filelog.py
r16498 #!/usr/bin/env python
"""
timeless@mozdev.org
spelling: behaviour -> behavior
r26098 Tests the behavior of filelog w.r.t. data starting with '\1\n'
Mads Kiilerich
tests: test test-filelog is python - rename to test-filelog.py
r16498 """
Robert Stanca
py3: use print_function in test-filelog.py
r28744 from __future__ import absolute_import, print_function
Yuya Nishihara
py3: move up symbol imports to enforce import-checker rules...
r29205
from mercurial.node import (
hex,
nullid,
)
Robert Stanca
py3: use absolute_import in test-filelog.py
r28743 from mercurial import (
hg,
Yuya Nishihara
test-filelog: alias ui as uimod
r28805 ui as uimod,
Robert Stanca
py3: use absolute_import in test-filelog.py
r28743 )
Mads Kiilerich
tests: test test-filelog is python - rename to test-filelog.py
r16498
Yuya Nishihara
ui: factor out ui.load() to create a ui without loading configs (API)...
r30559 myui = uimod.ui.load()
Augie Fackler
tests: port test-filelog.py to Python 3...
r37952 repo = hg.repository(myui, path=b'.', create=True)
Mads Kiilerich
tests: test test-filelog is python - rename to test-filelog.py
r16498
Augie Fackler
tests: port test-filelog.py to Python 3...
r37952 fl = repo.file(b'foobar')
Mads Kiilerich
tests: test test-filelog is python - rename to test-filelog.py
r16498
def addrev(text, renamed=False):
if renamed:
timeless@mozdev.org
spelling: doesn't/does not
r17486 # data doesn't matter. Just make sure filelog.renamed() returns True
Augie Fackler
tests: port test-filelog.py to Python 3...
r37952 meta = {b'copyrev': hex(nullid), b'copy': b'bar'}
Mads Kiilerich
tests: test test-filelog is python - rename to test-filelog.py
r16498 else:
meta = {}
lock = t = None
try:
lock = repo.lock()
Augie Fackler
tests: port test-filelog.py to Python 3...
r37952 t = repo.transaction(b'commit')
Mads Kiilerich
tests: test test-filelog is python - rename to test-filelog.py
r16498 node = fl.add(text, meta, t, 0, nullid, nullid)
return node
finally:
if t:
t.close()
if lock:
lock.release()
def error(text):
Robert Stanca
py3: use print_function in test-filelog.py
r28744 print('ERROR: ' + text)
Mads Kiilerich
tests: test test-filelog is python - rename to test-filelog.py
r16498
Augie Fackler
tests: port test-filelog.py to Python 3...
r37952 textwith = b'\1\nfoo'
without = b'foo'
Mads Kiilerich
tests: test test-filelog is python - rename to test-filelog.py
r16498
node = addrev(textwith)
if not textwith == fl.read(node):
error('filelog.read for data starting with \\1\\n')
if fl.cmp(node, textwith) or not fl.cmp(node, without):
error('filelog.cmp for data starting with \\1\\n')
if fl.size(0) != len(textwith):
error('FIXME: This is a known failure of filelog.size for data starting '
'with \\1\\n')
node = addrev(textwith, renamed=True)
if not textwith == fl.read(node):
error('filelog.read for a renaming + data starting with \\1\\n')
if fl.cmp(node, textwith) or not fl.cmp(node, without):
error('filelog.cmp for a renaming + data starting with \\1\\n')
if fl.size(1) != len(textwith):
error('filelog.size for a renaming + data starting with \\1\\n')
Robert Stanca
py3: use print_function in test-filelog.py
r28744 print('OK.')