view mercurial/error.py @ 22542:6b180a0c703e

bundle2: separate bundle10 and bundle2 cases in getbundle()

The primary goal is to make it easier for extensions to alter how bundle2
parts are laid out. They now can use the getbundle2partsgenerator decorator
to add new parts, or directly act on getbundle2partsmapping to wrap existing
part functions.

Note the 'request for bundle10 must include changegroup' error was kept
under the same conditions as before, although the logic changes don't make
it obvious.

# error.py - Mercurial exceptions
#
# Copyright 2005-2008 Matt Mackall <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

"""Mercurial exceptions.

This allows us to catch exceptions at higher levels without forcing
imports.
"""

# Do not import anything here, please

class RevlogError(Exception):
    pass

class LookupError(RevlogError, KeyError):
    def __init__(self, name, index, message):
        self.name = name
        if isinstance(name, str) and len(name) == 20:
            from node import short
            name = short(name)
        RevlogError.__init__(self, '%s@%s: %s' % (index, name, message))

    def __str__(self):
        return RevlogError.__str__(self)

class ManifestLookupError(LookupError):
    pass

class CommandError(Exception):
    """Exception raised on errors in parsing the command line."""

class InterventionRequired(Exception):
    """Exception raised when a command requires human intervention."""

class Abort(Exception):
    """Raised if a command needs to print an error and exit."""
    def __init__(self, *args, **kw):
        Exception.__init__(self, *args)
        self.hint = kw.get('hint')

class ConfigError(Abort):
    """Exception raised when parsing config files"""

class OutOfBandError(Exception):
    """Exception raised when a remote repo reports failure"""

class ParseError(Exception):
    """Exception raised when parsing config files (msg[, pos])"""

class RepoError(Exception):
    def __init__(self, *args, **kw):
        Exception.__init__(self, *args)
        self.hint = kw.get('hint')

class RepoLookupError(RepoError):
    pass

class CapabilityError(RepoError):
    pass

class RequirementError(RepoError):
    """Exception raised if .hg/requires has an unknown entry."""
    pass

class LockError(IOError):
    def __init__(self, errno, strerror, filename, desc):
        IOError.__init__(self, errno, strerror, filename)
        self.desc = desc

class LockHeld(LockError):
    def __init__(self, errno, filename, desc, locker):
        LockError.__init__(self, errno, 'Lock held', filename, desc)
        self.locker = locker

class LockUnavailable(LockError):
    pass

class ResponseError(Exception):
    """Raised to print an error with part of output and exit."""

class UnknownCommand(Exception):
    """Exception raised if command is not in the command table."""

class AmbiguousCommand(Exception):
    """Exception raised if command shortcut matches more than one command."""

# derived from KeyboardInterrupt to simplify some breakout code
class SignalInterrupt(KeyboardInterrupt):
    """Exception raised on SIGTERM and SIGHUP."""

class SignatureError(Exception):
    pass

class PushRaced(RuntimeError):
    """An exception raised during unbundling that indicate a push race"""

# bundle2 related errors
class BundleValueError(ValueError):
    """error raised when bundle2 cannot be processed"""

    def __init__(self, parttype=None, params=()):
        self.parttype = parttype
        self.params = params
        if self.parttype is None:
            msg = 'Stream Parameter'
        else:
            msg = parttype
        if self.params:
            msg = '%s - %s' % (msg, ', '.join(self.params))
        ValueError.__init__(self, msg)

class ReadOnlyPartError(RuntimeError):
    """error raised when code tries to alter a part being generated"""
    pass