upstream/mercurial-mirror Files · tests/test-lfs-pointer.py

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

Augie Fackler - - Load All Authors

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        Matt Harbison
    
lfs: import the Facebook git-lfs client extension...

              r35097
            
      from __future__ import absolute_import, print_function

      import os

      import sys

      # make it runnable using python directly without run-tests.py

      sys.path[0:0] = [os.path.join(os.path.dirname(__file__), '..')]

        Augie Fackler
    
tests: port test-lfs-pointer.py to Python 3...

              r37947
            
      # Import something from Mercurial, so the module loader gets initialized.

      from mercurial import pycompat

      del pycompat  # unused for now

        Matt Harbison
    
lfs: import the Facebook git-lfs client extension...

              r35097
            
      from hgext.lfs import pointer

      def tryparse(text):

          r = {}

          try:

              r = pointer.deserialize(text)

              print('ok')

          except Exception as ex:

        Augie Fackler
    
tests: port test-lfs-pointer.py to Python 3...

              r37947
            
              print((b'%s' % ex).decode('ascii'))

        Matt Harbison
    
lfs: import the Facebook git-lfs client extension...

              r35097
            
          if r:

              text2 = r.serialize()

              if text2 != text:

                  print('reconstructed text differs')

          return r

        Augie Fackler
    
tests: port test-lfs-pointer.py to Python 3...

              r37947
            
      t = (b'version https://git-lfs.github.com/spec/v1\n'

           b'oid sha256:4d7a214614ab2935c943f9e0ff69d22eadbb8f32b1'

           b'258daaa5e2ca24d17e2393\n'

           b'size 12345\n'

           b'x-foo extra-information\n')

        Matt Harbison
    
lfs: import the Facebook git-lfs client extension...

              r35097
            
        Augie Fackler
    
tests: port test-lfs-pointer.py to Python 3...

              r37947
            
      tryparse(b'')

        Matt Harbison
    
lfs: import the Facebook git-lfs client extension...

              r35097
            
      tryparse(t)

        Augie Fackler
    
tests: port test-lfs-pointer.py to Python 3...

              r37947
            
      tryparse(t.replace(b'git-lfs', b'unknown'))

      tryparse(t.replace(b'v1\n', b'v1\n\n'))

      tryparse(t.replace(b'sha256', b'ahs256'))

      tryparse(t.replace(b'sha256:', b''))

      tryparse(t.replace(b'12345', b'0x12345'))

      tryparse(t.replace(b'extra-information', b'extra\0information'))

      tryparse(t.replace(b'extra-information', b'extra\ninformation'))

      tryparse(t.replace(b'x-foo', b'x_foo'))

      tryparse(t.replace(b'oid', b'blobid'))

      tryparse(t.replace(b'size', b'size-bytes').replace(b'oid', b'object-id'))

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Matt Harbison lfs: import the Facebook git-lfs client extension...	r35097	from __future__ import absolute_import, print_function

		import os
		import sys

		# make it runnable using python directly without run-tests.py
		sys.path[0:0] = [os.path.join(os.path.dirname(__file__), '..')]

Augie Fackler tests: port test-lfs-pointer.py to Python 3...	r37947	# Import something from Mercurial, so the module loader gets initialized.
		from mercurial import pycompat
		del pycompat # unused for now

Matt Harbison lfs: import the Facebook git-lfs client extension...	r35097	from hgext.lfs import pointer

		def tryparse(text):
		r = {}
		try:
		r = pointer.deserialize(text)
		print('ok')
		except Exception as ex:
Augie Fackler tests: port test-lfs-pointer.py to Python 3...	r37947	print((b'%s' % ex).decode('ascii'))
Matt Harbison lfs: import the Facebook git-lfs client extension...	r35097	if r:
		text2 = r.serialize()
		if text2 != text:
		print('reconstructed text differs')
		return r

Augie Fackler tests: port test-lfs-pointer.py to Python 3...	r37947	t = (b'version https://git-lfs.github.com/spec/v1\n'
		b'oid sha256:4d7a214614ab2935c943f9e0ff69d22eadbb8f32b1'
		b'258daaa5e2ca24d17e2393\n'
		b'size 12345\n'
		b'x-foo extra-information\n')
Matt Harbison lfs: import the Facebook git-lfs client extension...	r35097
Augie Fackler tests: port test-lfs-pointer.py to Python 3...	r37947	tryparse(b'')
Matt Harbison lfs: import the Facebook git-lfs client extension...	r35097	tryparse(t)
Augie Fackler tests: port test-lfs-pointer.py to Python 3...	r37947	tryparse(t.replace(b'git-lfs', b'unknown'))
		tryparse(t.replace(b'v1\n', b'v1\n\n'))
		tryparse(t.replace(b'sha256', b'ahs256'))
		tryparse(t.replace(b'sha256:', b''))
		tryparse(t.replace(b'12345', b'0x12345'))
		tryparse(t.replace(b'extra-information', b'extra\0information'))
		tryparse(t.replace(b'extra-information', b'extra\ninformation'))
		tryparse(t.replace(b'x-foo', b'x_foo'))
		tryparse(t.replace(b'oid', b'blobid'))
		tryparse(t.replace(b'size', b'size-bytes').replace(b'oid', b'object-id'))