Python _build_flow_expr_str Examples

Example #1

def ofctl_arg_supported(cmd, **kwargs):
    """Verify if ovs-ofctl binary supports cmd with **kwargs.

    :param cmd: ovs-ofctl command to use for test.
    :param **kwargs: arguments to test with the command.
    :returns: a boolean if the supplied arguments are supported.
    """
    br_name = common_utils.get_rand_device_name(prefix='br-test-')
    with ovs_lib.OVSBridge(br_name) as test_br:
        full_args = [
            "ovs-ofctl", cmd, test_br.br_name,
            ovs_lib._build_flow_expr_str(kwargs,
                                         cmd.split('-')[0], False)
        ]
        try:
            agent_utils.execute(full_args, run_as_root=True)
        except RuntimeError as e:
            LOG.debug(
                "Exception while checking supported feature via "
                "command %s. Exception: %s", full_args, e)
            return False
        except Exception:
            LOG.exception(
                "Unexpected exception while checking supported"
                " feature via command: %s", full_args)
            return False
        else:
            return True

Example #2

File: ovs_ext_lib.py Project: n-mohan/networking-sfc

 def mod_flow(self, **kwargs):
     flow_copy = kwargs.copy()
     flow_copy.pop('actions')
     flow_str = ovs_lib._build_flow_expr_str(flow_copy, 'del')
     dump_flows = self.dump_flows_full_match(flow_str)
     if dump_flows == '':
         self.do_action_flows('add', [kwargs])
     else:
         self.do_action_flows('mod', [kwargs])

Example #3

File: ovs_ext_lib.py Project: doonhammer/networking-sfc

 def mod_flow(self, **kwargs):
     flow_copy = kwargs.copy()
     flow_copy.pop('actions')
     flow_str = ovs_lib._build_flow_expr_str(flow_copy, 'del')
     dump_flows = self.dump_flows_full_match(flow_str)
     if dump_flows == '':
         self.do_action_flows('add', [kwargs])
     else:
         self.do_action_flows('mod', [kwargs])

Example #4

File: ovs_ext_lib.py Project: CNlukai/networking-sfc

 def mod_flow(self, **kwargs):
     flow_copy = kwargs.copy()
     flow_copy.pop("actions")
     flow_str = ovs_lib._build_flow_expr_str(flow_copy, "del")
     dump_flows = self.dump_flows_full_match(flow_str)
     if dump_flows == "":
         self.do_action_flows("add", [kwargs])
     else:
         self.do_action_flows("mod", [kwargs])

Example #5

File: ovs_ext_lib.py Project: igordcard/networking-sfc

    def do_action_flows(self, action, kwargs_list):
        # We force our own run_ofctl to keep OpenFlow version parameter
        for kw in kwargs_list:
            kw.setdefault('cookie', self._cookie)

            if action is 'mod' or action is 'del':
                kw['cookie'] = ovs_lib.check_cookie_mask(str(kw['cookie']))

        flow_strs = [ovs_lib._build_flow_expr_str(kw, action)
                     for kw in kwargs_list]
        self.run_ofctl('%s-flows' % action, ['-'], '\n'.join(flow_strs))

Example #6

File: ovs_ext_lib.py Project: anlaneg/networking-sfc

    def do_action_flows(self, action, kwargs_list):
        # We force our own run_ofctl to keep OpenFlow version parameter
        for kw in kwargs_list:
            kw.setdefault('cookie', self._cookie)

            if action is 'mod' or action is 'del':
                kw['cookie'] = ovs_lib.check_cookie_mask(str(kw['cookie']))

        flow_strs = [
            ovs_lib._build_flow_expr_str(kw, action) for kw in kwargs_list
        ]
        self.run_ofctl('%s-flows' % action, ['-'], '\n'.join(flow_strs))

Example #7

File: checks.py Project: EnterSrl/neutron

def ofctl_arg_supported(cmd, **kwargs):
    """Verify if ovs-ofctl binary supports cmd with **kwargs.

    :param cmd: ovs-ofctl command to use for test.
    :param **kwargs: arguments to test with the command.
    :returns: a boolean if the supplied arguments are supported.
    """
    br_name = "br-test-%s" % utils.get_random_string(6)
    with ovs_lib.OVSBridge(br_name) as test_br:
        full_args = ["ovs-ofctl", cmd, test_br.br_name, ovs_lib._build_flow_expr_str(kwargs, cmd.split("-")[0])]
        try:
            agent_utils.execute(full_args, run_as_root=True)
        except RuntimeError as e:
            LOG.debug("Exception while checking supported feature via " "command %s. Exception: %s", full_args, e)
            return False
        except Exception:
            LOG.exception(_LE("Unexpected exception while checking supported" " feature via command: %s"), full_args)
            return False
        else:
            return True