view hgext/largefiles/wirestore.py @ 50256:a6e0b7d4ae9d

dirstate: write the `branch` as part of the transaction if any

Bypassing the transaction means we could get out of sync with the dirstatemap
content.

The branch is stil written right away if no transaction is around, but at least
it no longer bypass the transaction.

Actual caller of this still need to be updated.

# Copyright 2010-2011 Fog Creek Software
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

'''largefile store working over Mercurial's wire protocol'''

from . import (
    lfutil,
    remotestore,
)


class wirestore(remotestore.remotestore):
    def __init__(self, ui, repo, remote):
        cap = remote.capable(b'largefiles')
        if not cap:
            raise lfutil.storeprotonotcapable([])
        storetypes = cap.split(b',')
        if b'serve' not in storetypes:
            raise lfutil.storeprotonotcapable(storetypes)
        self.remote = remote
        super(wirestore, self).__init__(ui, repo, remote.url())

    def _put(self, hash, fd):
        return self.remote.putlfile(hash, fd)

    def _get(self, hash):
        return self.remote.getlfile(hash)

    def _stat(self, hashes):
        """For each hash, return 0 if it is available, other values if not.
        It is usually 2 if the largefile is missing, but might be 1 the server
        has a corrupted copy."""

        with self.remote.commandexecutor() as e:
            fs = []
            for hash in hashes:
                fs.append(
                    (
                        hash,
                        e.callcommand(
                            b'statlfile',
                            {
                                b'sha': hash,
                            },
                        ),
                    )
                )

            return {hash: f.result() for hash, f in fs}