server.py 文件源码

def graph(self, uuid, locked=None, **kwargs):
        if locked is None:
            with self.lock.shared(uuid) as locked:
                g = self.graph(uuid, locked=locked, **kwargs)
            return g

        kwargs.update(self.creds)
        try:
            return self.collection.graph(uuid, **kwargs)
        except (IOError, OSError) as e:
            if e.errno is errno.EPERM:
                raise HTTPError(403, str(e))
            elif e.errno is errno.ENOSPC:
                raise HTTPError(507, str(e))
            raise HTTPError(404, "Backend graph for %s is inaccessible: %s" % (uuid, str(e)))