comparison mercurial/transaction.py @ 23310:5bd1f6572db0

transaction: pass a vfs map to the transaction

The goal is to allow access to file outside ofthe store directory from the
transaction. The obvious target are the `bookmarks` file. But we can envision
usage for cache too.

We keep passing a main opener explicitly because a lot of code rely on this
default opener. The main opener (operating on store) is using an empty key ''.

23309:7eb520f5efe4

    for f in backupfiles:
        if opener.exists(f):
            opener.unlink(f)

class transaction(object):
    def __init__(self, report, opener, journal, after=None, createmode=None,
            onclose=None, onabort=None):
        """Begin a new transaction

        Begins a new transaction that allows rolling back writes in the event of
        an exception.

        have been truncated
        """
        self.count = 1
        self.usages = 1
        self.report = report
        self.opener = opener
        self.after = after
        self.onclose = onclose
        self.onabort = onabort
        self.entries = []
        self.map = {}

23310:5bd1f6572db0

    for f in backupfiles:
        if opener.exists(f):
            opener.unlink(f)

class transaction(object):
    def __init__(self, report, opener, vfsmap, journal, after=None,
                 createmode=None, onclose=None, onabort=None):
        """Begin a new transaction

        Begins a new transaction that allows rolling back writes in the event of
        an exception.

        have been truncated
        """
        self.count = 1
        self.usages = 1
        self.report = report
        # a vfs to the store content
        self.opener = opener
        # a map to access file in various {location -> vfs}
        vfsmap = vfsmap.copy()
        vfsmap[''] = opener  # set default value
        self._vfsmap = vfsmap
        self.after = after
        self.onclose = onclose
        self.onabort = onabort
        self.entries = []
        self.map = {}