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Python wrapper around GNS3 Server API

Project description

gns3fy

Python wrapper around GNS3 Server API.

Its main objective is to interact with the GNS3 server in a programatic way, so it can be integrated with the likes of Ansible, docker and scripts.

Install

pip install gns3fy

Development version

Use poetry to install the package when cloning it.

How it works

You can start the library and use the Gns3Connector object and the Project object.

For example:

import gns3fy

# Define the server object to establish the connection
gns3_server = gns3fy.Gns3Connector("http://<server address>:3080")

# Define the lab you want to load and assign the server connector
lab = gns3fy.Project(name="API_TEST", connector=gns3_server)

# Retrieve its information and display
lab.get()

print(lab)
# Project(project_id='4b21dfb3-675a-4efa-8613-2f7fb32e76fe', name='API_TEST', status='opened', ...

# Access the project attributes
print(f"Name: {lab.name} -- Status: {lab.status} -- Is auto_closed?: {lab.auto_close}")
# Name: API_TEST -- Status: closed -- Is auto_closed?: False

# Open the project
lab.open()
print(lab.status)
# opened

# Verify the stats
print(lab.stats)
# {'drawings': 0, 'links': 4, 'nodes': 6, 'snapshots': 0}

# List the names and status of all the nodes in the project
for node in lab.nodes:
    print(f"Node: {node.name} -- Node Type: {node.node_type} -- Status: {node.status}")
# Node: Ethernetswitch-1 -- Node Type: ethernet_switch -- Status: started
# ...

Take a look at the API documentation for complete information about the attributes retrieved.

Usage of Node and Link objects

You have access to the Node and Link objects as well, this gives you the ability to start, stop, suspend the individual element in a GNS3 project.

from gns3fy import Node, Link, Gns3Connector

PROJECT_ID = "<some project id>"
server = Gns3Connector("http://<server address>:3080")

alpine1 = Node(project_id=PROJECT_ID, name="alpine-1", connector=server)

alpine1.get()
print(alpine1)
# Node(name='alpine-1', node_type='docker', node_directory= ...

# And you can access the attributes the same way as the project
print(f"Name: {alpine1.name} -- Status: {alpine1.status} -- Console: {alpine1.console}")
# Name: alpine-1 -- Status: started -- Console: 5005

# Stop the node and start (you can just restart it as well)
alpine1.stop()
print(alpine1.status)
# stopped

alpine1.start()
print(alpine1.status)
# started

# You can also see the Link objects assigned to this node
print(alpine1.links)
# [Link(link_id='4d9f1235-7fd1-466b-ad26-0b4b08beb778', link_type='ethernet', ....

# And in the same way you can interact with a Link object
link1 = alpine1.links[0]
print(f"Link Type: {link1.link_type} -- Capturing?: {link1.capturing} -- Endpoints: {link1.nodes}")
# Link Type: ethernet -- Capturing?: False -- Endpoints: [{'adapter_number': 2, ...

Bonus

You also have some commodity methods like the nodes_summary and links_summary, that if used with a library like tabulate you can see the following:

...
from tabulate import tabulate

nodes_summary = lab.nodes_summary(is_print=False)

print(
    tabulate(nodes_summary, headers=["Node", "Status", "Console Port", "ID"])
)
# Node              Status      Console Port  ID
# ----------------  --------  --------------  ------------------------------------
# Ethernetswitch-1  started             5000  da28e1c0-9465-4f7c-b42c-49b2f4e1c64d
# IOU1              started             5001  de23a89a-aa1f-446a-a950-31d4bf98653c
# IOU2              started             5002  0d10d697-ef8d-40af-a4f3-fafe71f5458b
# vEOS-4.21.5F-1    started             5003  8283b923-df0e-4bc1-8199-be6fea40f500
# alpine-1          started             5005  ef503c45-e998-499d-88fc-2765614b313e
# Cloud-1           started                   cde85a31-c97f-4551-9596-a3ed12c08498

links_summary = lab.links_summary(is_print=False)
print(
    tabulate(links_summary, headers=["Node A", "Port A", "Node B", "Port B"])
)
# Node A          Port A       Node B            Port B
# --------------  -----------  ----------------  -----------
# IOU1            Ethernet1/0  IOU2              Ethernet1/0
# vEOS-4.21.5F-1  Management1  Ethernetswitch-1  Ethernet0
# vEOS-4.21.5F-1  Ethernet1    alpine-1          eth0
# Cloud-1         eth1         Ethernetswitch-1  Ethernet7

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