diff options
Diffstat (limited to 'cloudinit/sources/helpers/tests/test_netlink.py')
| -rw-r--r-- | cloudinit/sources/helpers/tests/test_netlink.py | 74 |
1 files changed, 72 insertions, 2 deletions
diff --git a/cloudinit/sources/helpers/tests/test_netlink.py b/cloudinit/sources/helpers/tests/test_netlink.py index 10760bd6..cafe3961 100644 --- a/cloudinit/sources/helpers/tests/test_netlink.py +++ b/cloudinit/sources/helpers/tests/test_netlink.py @@ -9,9 +9,10 @@ import codecs from cloudinit.sources.helpers.netlink import ( NetlinkCreateSocketError, create_bound_netlink_socket, read_netlink_socket, read_rta_oper_state, unpack_rta_attr, wait_for_media_disconnect_connect, + wait_for_nic_attach_event, wait_for_nic_detach_event, OPER_DOWN, OPER_UP, OPER_DORMANT, OPER_LOWERLAYERDOWN, OPER_NOTPRESENT, - OPER_TESTING, OPER_UNKNOWN, RTATTR_START_OFFSET, RTM_NEWLINK, RTM_SETLINK, - RTM_GETLINK, MAX_SIZE) + OPER_TESTING, OPER_UNKNOWN, RTATTR_START_OFFSET, RTM_NEWLINK, RTM_DELLINK, + RTM_SETLINK, RTM_GETLINK, MAX_SIZE) def int_to_bytes(i): @@ -135,6 +136,75 @@ class TestParseNetlinkMessage(CiTestCase): @mock.patch('cloudinit.sources.helpers.netlink.socket.socket') @mock.patch('cloudinit.sources.helpers.netlink.read_netlink_socket') +class TestNicAttachDetach(CiTestCase): + with_logs = True + + def _media_switch_data(self, ifname, msg_type, operstate): + '''construct netlink data with specified fields''' + if ifname and operstate is not None: + data = bytearray(48) + bytes = ifname.encode("utf-8") + struct.pack_into("HH4sHHc", data, RTATTR_START_OFFSET, 8, 3, + bytes, 5, 16, int_to_bytes(operstate)) + elif ifname: + data = bytearray(40) + bytes = ifname.encode("utf-8") + struct.pack_into("HH4s", data, RTATTR_START_OFFSET, 8, 3, bytes) + elif operstate: + data = bytearray(40) + struct.pack_into("HHc", data, RTATTR_START_OFFSET, 5, 16, + int_to_bytes(operstate)) + struct.pack_into("=LHHLL", data, 0, len(data), msg_type, 0, 0, 0) + return data + + def test_nic_attached_oper_down(self, m_read_netlink_socket, m_socket): + '''Test for a new nic attached''' + ifname = "eth0" + data_op_down = self._media_switch_data(ifname, RTM_NEWLINK, OPER_DOWN) + m_read_netlink_socket.side_effect = [data_op_down] + ifread = wait_for_nic_attach_event(m_socket, []) + self.assertEqual(m_read_netlink_socket.call_count, 1) + self.assertEqual(ifname, ifread) + + def test_nic_attached_oper_up(self, m_read_netlink_socket, m_socket): + '''Test for a new nic attached''' + ifname = "eth0" + data_op_up = self._media_switch_data(ifname, RTM_NEWLINK, OPER_UP) + m_read_netlink_socket.side_effect = [data_op_up] + ifread = wait_for_nic_attach_event(m_socket, []) + self.assertEqual(m_read_netlink_socket.call_count, 1) + self.assertEqual(ifname, ifread) + + def test_nic_attach_ignore_existing(self, m_read_netlink_socket, m_socket): + '''Test that we read only the interfaces we are interested in.''' + data_eth0 = self._media_switch_data("eth0", RTM_NEWLINK, OPER_DOWN) + data_eth1 = self._media_switch_data("eth1", RTM_NEWLINK, OPER_DOWN) + m_read_netlink_socket.side_effect = [data_eth0, data_eth1] + ifread = wait_for_nic_attach_event(m_socket, ["eth0"]) + self.assertEqual(m_read_netlink_socket.call_count, 2) + self.assertEqual("eth1", ifread) + + def test_nic_attach_read_first(self, m_read_netlink_socket, m_socket): + '''Test that we read only the interfaces we are interested in.''' + data_eth0 = self._media_switch_data("eth0", RTM_NEWLINK, OPER_DOWN) + data_eth1 = self._media_switch_data("eth1", RTM_NEWLINK, OPER_DOWN) + m_read_netlink_socket.side_effect = [data_eth0, data_eth1] + ifread = wait_for_nic_attach_event(m_socket, ["eth1"]) + self.assertEqual(m_read_netlink_socket.call_count, 1) + self.assertEqual("eth0", ifread) + + def test_nic_detached(self, m_read_netlink_socket, m_socket): + '''Test for an existing nic detached''' + ifname = "eth0" + data_op_down = self._media_switch_data(ifname, RTM_DELLINK, OPER_DOWN) + m_read_netlink_socket.side_effect = [data_op_down] + ifread = wait_for_nic_detach_event(m_socket) + self.assertEqual(m_read_netlink_socket.call_count, 1) + self.assertEqual(ifname, ifread) + + +@mock.patch('cloudinit.sources.helpers.netlink.socket.socket') +@mock.patch('cloudinit.sources.helpers.netlink.read_netlink_socket') class TestWaitForMediaDisconnectConnect(CiTestCase): with_logs = True |