fixes functions and adds cli support

- implements cli
- fixes get_bgp_neighbors #44
- fixes get_lldp_neighbors(multiple neighbors)

napalm_vyos/vyos.py

@@ -472,12 +472,14 @@ class VyOSDriver(NetworkDriver):
         """
 
         output = self.device.send_command("show ip bgp summary")
-        output = output.split("\n")
-
-        match = re.search(r".* router identifier (\d+\.\d+\.\d+\.\d+), local AS number (\d+)",
-                          output[0])
+        match = re.search(
+            r"bgp router identifier (\d+\.\d+\.\d+\.\d+), local as number (\d+) vrf-id (\d+)",
+            output,
+            re.MULTILINE | re.IGNORECASE
+        )
         if not match:
             return {}
+
         router_id = match.group(1)
         local_as = int(match.group(2))
 
@@ -486,13 +488,24 @@ class VyOSDriver(NetworkDriver):
         bgp_neighbor_data["global"]["router_id"] = router_id
         bgp_neighbor_data["global"]["peers"] = {}
         
-        # delete the header and empty element
-        bgp_info = [i.strip() for i in output[6:-2] if i]
+        re_neighbor = re.compile(
+            '^([\w\d:\.]+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\S+)\s+(\w+)'
+        )
+        for bgp_line in output.split("\n"):
+            match = re_neighbor.search(bgp_line)
+            if not match:
+                continue
             
-        for i in bgp_info:
-            if len(i) > 0:
-                peer_id, bgp_version, remote_as, msg_rcvd, msg_sent, table_version, \
-                    in_queue, out_queue, up_time, state_prefix = i.split()
+            peer_id = match.group(1)
+            bgp_version = match.group(2)
+            remote_as = match.group(3)
+            msg_rcvd = match.group(4)
+            msg_sent = match.group(5)
+            table_version = match.group(6)
+            in_queue = match.group(7)
+            out_queue = match.group(8)
+            up_time = match.group(9)
+            state_prefix = match.group(10)
 
             is_enabled = "(Admin)" not in state_prefix
             
@@ -586,27 +599,28 @@ class VyOSDriver(NetworkDriver):
                 return uptime
 
     def get_lldp_neighbors(self):
-        # Multiple neighbors per port are not implemented
-        # The show lldp neighbors commands lists port descriptions, not IDs
+        ret = []
         output = self.device.send_command("show lldp neighbors detail")
-        pattern = r'''(?s)Interface: +(?P<interface>\S+), [^\n]+
-.+?
- +SysName: +(?P<hostname>\S+)
-.+?
- +PortID: +ifname (?P<port>\S+)'''
+        regex = '{},.+?{}.+?{}'.format(
+            "Interface:\s+(\S+)",
+            "SysName:\s+(\S+)",
+            "PortID:\s+ifname (\S+)"
+        )
+        re_lldp = re.compile(
+            regex,
+            re.MULTILINE|re.DOTALL
+        )
+        match = re_lldp.findall(output)
+        if not match:
+            return []
         
-        def _get_interface(match):
-            return [
-                {
-                    'hostname': match.group('hostname'),
-                    'port': match.group('port'),
-                }
-            ]
-
-        return {
-            match.group('interface'): _get_interface(match)
-            for match in re.finditer(pattern, output)
-        }
+        for ocurrence in match:
+            ret.append({
+                'hostname'  : ocurrence[0],
+                'port'      : ocurrence[1],
+                'interface' : ocurrence[2]
+            })
+        return ret
 
     def get_interfaces_counters(self):
         # 'rx_unicast_packet', 'rx_broadcast_packets', 'tx_unicast_packets',
@@ -958,3 +972,17 @@ class VyOSDriver(NetworkDriver):
         config = config[:config.rfind('\n')]
         self.device.exit_config_mode()
         return config
+
+    def cli(self, commands):
+        cli_output = {}
+
+        if not isinstance(commands, list):
+            raise TypeError("Please enter a valid list of commands!")
+
+        for command in commands:
+            try:
+                cli_output[command] = self.device.send_command(command)
+            except Exception:
+                cli_output[command] = 'error running command'
+
+        return cli_output