107 lines
2.6 KiB
Python
107 lines
2.6 KiB
Python
"""
|
|
The functions in this file interact with the VPP API to retrieve certain
|
|
interface metadata.
|
|
"""
|
|
|
|
from vpp_papi import VPPApiClient
|
|
import os
|
|
import fnmatch
|
|
import logging
|
|
import socket
|
|
|
|
|
|
class NullHandler(logging.Handler):
|
|
def emit(self, record):
|
|
pass
|
|
|
|
|
|
logger = logging.getLogger("agentx.vppapi")
|
|
logger.addHandler(NullHandler())
|
|
|
|
|
|
class VPPApi:
|
|
def __init__(self, address="/run/vpp/api.sock", clientname="vppapi-client"):
|
|
self.address = address
|
|
self.connected = False
|
|
self.clientname = clientname
|
|
self.vpp = None
|
|
|
|
def connect(self):
|
|
if self.connected:
|
|
return True
|
|
|
|
vpp_json_dir = "/usr/share/vpp/api/"
|
|
|
|
# construct a list of all the json api files
|
|
jsonfiles = []
|
|
for root, dirnames, filenames in os.walk(vpp_json_dir):
|
|
for filename in fnmatch.filter(filenames, "*.api.json"):
|
|
jsonfiles.append(os.path.join(root, filename))
|
|
|
|
if not jsonfiles:
|
|
logger.error("no json api files found")
|
|
return False
|
|
|
|
self.vpp = VPPApiClient(apifiles=jsonfiles, server_address=self.address)
|
|
try:
|
|
logger.info("Connecting to VPP")
|
|
self.vpp.connect(self.clientname)
|
|
except:
|
|
return False
|
|
|
|
v = self.vpp.api.show_version()
|
|
logger.info("VPP version is %s" % v.version)
|
|
|
|
self.connected = True
|
|
return True
|
|
|
|
def disconnect(self):
|
|
if not self.connected:
|
|
return True
|
|
self.vpp.disconnect()
|
|
self.connected = False
|
|
return True
|
|
|
|
def get_ifaces(self):
|
|
ret = {}
|
|
if not self.connected:
|
|
return ret
|
|
|
|
try:
|
|
iface_list = self.vpp.api.sw_interface_dump()
|
|
except Exception as e:
|
|
logger.error("VPP communication error, disconnecting", e)
|
|
self.vpp.disconnect()
|
|
self.connected = False
|
|
return ret
|
|
|
|
if not iface_list:
|
|
logger.error("Can't get interface list")
|
|
return ret
|
|
|
|
for iface in iface_list:
|
|
ret[iface.interface_name] = iface
|
|
|
|
return ret
|
|
|
|
def get_lcp(self):
|
|
ret = {}
|
|
if not self.connected:
|
|
return ret
|
|
|
|
try:
|
|
lcp_list = self.vpp.api.lcp_itf_pair_get()
|
|
except Exception as e:
|
|
logger.error("VPP communication error, disconnecting", e)
|
|
self.vpp.disconnect()
|
|
self.connected = False
|
|
return ret
|
|
|
|
if not lcp_list:
|
|
logger.error("Can't get LCP list")
|
|
return ret
|
|
|
|
for lcp in lcp_list[1]:
|
|
ret[lcp.host_if_name] = lcp
|
|
return ret
|