vpp系列4pythonApi

  • Z时代
  • 2024-01-10
  • 分类：综合

编程

前置

python操作vpp，见官网介绍

安装

apt-get install vpp-api-python python3-vpp-api vpp-dbg vpp-dev

没有pip的请安装pip，然后需要安装包cffi

apt-get install python3-pip
pip3 install cffi

代码

#!/usr/bin/env python
from __future__ import print_function
import os
import fnmatch
from vpp_papi import VPP
CLIENT_ID = "Vppclient"
VPP_JSON_DIR = "/usr/share/vpp/api/core"
API_FILE_SUFFIX = "*.api.json"
def load_json_api_files(json_dir=VPP_JSON_DIR, suffix=API_FILE_SUFFIX):
    jsonfiles = []
    for root, dirnames, filenames in os.walk(json_dir):
        for filename in fnmatch.filter(filenames, suffix):
            jsonfiles.append(os.path.join(json_dir, filename))
    if not jsonfiles:
        print("Error: no json api files found")
        exit(-1)
    return jsonfiles
def connect_vpp(jsonfiles):
    vpp = VPP(jsonfiles)
    r = vpp.connect("CLIENT_ID")
    print("VPP api opened with code: %s" % r)
    return vpp
def dump_interfaces():
    print("Sending dump interfaces. Msg id: sw_interface_dump")
    for intf in vpp.api.sw_interface_dump():
        print("	Interface, message id: sw_interface_details, interface index: %s" % intf.interface_name)
def dump_bds():
    print("Sending dump bridge domains. Msg id: bridge_domain_dump")
    for intf in vpp.api.bridge_domain_dump(bd_id = int("ffffffff", 16)):
        print("	Bridge domain, message id: bridge_domain_details, bd index: %s" % intf.bd_id)
def create_loopback():
    print("Sending create loopback. Msg id: create_loopback_interface")
    vpp.api.create_loopback()
def create_bd():
    print("Sending create loopback. Msg id: create_loopback_interface")
    vpp.api.bridge_domain_add_del(is_add = 1, bd_id = 99)
# Python apis need json definitions to interpret messages
vpp = connect_vpp(load_json_api_files())
# Dump interfaces
dump_interfaces()
# Create loopback
create_loopback()
# Dump interfaces
dump_interfaces()
# Dump bridge-domains
dump_bds()
# Create bridge domain
create_bd()
# Dump bridge-domains
dump_bds()
exit(vpp.disconnect())

执行

root@ubuntu:~# python3 vpp.py 
VPP api opened with code: 0
Sending dump interfaces. Msg id: sw_interface_dump
        Interface, message id: sw_interface_details, interface index: local0
        Interface, message id: sw_interface_details, interface index: ethvpp-1
        Interface, message id: sw_interface_details, interface index: ethvpp-2

 

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