kallithea Files · rhodecode/lib/vcs/utils/imports.py

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Marcin Kuzminski

Don't cache dulwich Repos, in pararell multithreaded evniroment dulwich pack file openers
can break badly. We need to create Repo() objects always for each call, even when it's
taken from cache.
Fixed issue with dulwich filedescriptor leak ref #573

from rhodecode.lib.vcs.exceptions import VCSError


def import_class(class_path):
    """
    Returns class from the given path.

    For example, in order to get class located at
    ``vcs.backends.hg.MercurialRepository``:

        try:
            hgrepo = import_class('vcs.backends.hg.MercurialRepository')
        except VCSError:
            # hadle error
    """
    splitted = class_path.split('.')
    mod_path = '.'.join(splitted[:-1])
    class_name = splitted[-1]
    try:
        class_mod = __import__(mod_path, {}, {}, [class_name])
    except ImportError, err:
        msg = "There was problem while trying to import backend class. "\
            "Original error was:\n%s" % err
        raise VCSError(msg)
    cls = getattr(class_mod, class_name)

    return cls