Topolograph Python SDK

A Pythonic, object-oriented client for the Topolograph REST API with built-in topology ingestion via SSH.

Features

• Pythonic API Client: Clean, object-oriented interface to the Topolograph REST API
• SSH-Based Collection: Collect IGP LSDB data directly from network devices using Nornir
• CLI Interface: Command-line tool built on top of the SDK
• PyPI Ready: Installable via pip install topolograph-sdk

Installation

pip install topolograph-sdk

PyPI Package: https://pypi.org/project/topolograph-sdk/

Quick Start

Basic Usage

from topolograph import Topolograph

# Initialize client
topo = Topolograph(
    url="http://localhost:8080",
    token="your-api-token"  # or set TOPOLOGRAPH_TOKEN env var
)

# Get latest graph
graph = topo.graphs.get(latest=True)

# Access graph properties
print(f"Graph Time: {graph.graph_time}")
print(f"Protocol: {graph.protocol}")
print(f"Hosts: {graph.hosts['count']}")

# Get graph status
status = graph.status()
print(f"Status: {status['status']}")

Collecting Topology Data

from topolograph import TopologyCollector

# Create collector with inventory file
collector = TopologyCollector("inventory.yaml")

# Collect LSDB data
result = collector.collect()

# Access results
print(f"Collected from {len(result.host_results)} hosts")
print(f"LSDB text length: {len(result.raw_lsdb_text)}")

# Upload to Topolograph
graph = topo.uploader.upload_raw(
    lsdb_text=result.raw_lsdb_text,
    vendor="FRR",
    protocol="isis"
)

Inventory Format

Create a YAML inventory file with explicit vendor and protocol metadata. A sample inventory file (inventory.yaml.example) is provided in the project root:

---
router1:
  hostname: 172.20.20.2
  username: admin
  password: admin
  vendor: frr
  protocol: isis
  port: 22

router2:
  hostname: 172.20.20.3
  username: admin
  password: admin
  vendor: cisco
  protocol: ospf
  port: 22

Required fields:

• hostname: IP address or hostname of the device
• username: SSH username
• password: SSH password
• vendor: Device vendor (cisco, juniper, frr, arista, nokia, huawei)
• protocol: IGP protocol (ospf, isis)
• port: SSH port (optional, defaults to 22)

Quick start: Copy the example inventory file:

cp inventory.yaml.example inventory.yaml
# Edit inventory.yaml with your device credentials

Working with Graphs

# List all graphs
graphs = topo.graphs.list(protocol="ospf")

# Get specific graph
graph = topo.graphs.get_by_time("2024-01-15T10:30:00Z")

# Get nodes
nodes = graph.nodes.get()
for node in nodes:
    print(f"Node: {node.name} (ID: {node.id})")

# Find networks
networks = graph.networks.find_by_ip("10.10.10.1")
networks = graph.networks.find_by_node("1.1.1.1")
network = graph.networks.find_by_network("10.10.10.0/24")

Uploading YAML Diagrams

Upload arbitrary network topologies defined in YAML format:

# Define topology in YAML format
yaml_diagram = """
nodes:
  10.10.10.1:
    label: Router1
    location: dc1
  10.10.10.2:
    label: Router2
    location: dc1
edges:
  - src: 10.10.10.1
    dst: 10.10.10.2
    cost: 10
    bw: 1000
"""

# Upload diagram
graph = topo.graphs.upload_diagram(yaml_diagram)
print(f"Diagram uploaded with graph_time: {graph.graph_time}")

Updating Node Attributes

Update node attributes in YAML-based diagrams:

# Get a YAML diagram graph
graph = topo.graphs.get_by_time("18Jan2026_15h53m13s_3_hosts_yaml")

# Get a node
node = graph.nodes.get_by_id(0)
print(f"Current name: {node.name}")

# Update node completely (PUT - replaces all attributes)
updated_node = graph.nodes.update(
    node.id,
    {
        'name': 'new_router_name',
        'location': 'datacenter1',
        'role': 'core_router',
        'vendor': 'cisco'
    }
)

# Partially update node (PATCH - only specified attributes)
updated_node = graph.nodes.patch(
    node.id,
    {'name': 'renamed_router'}
)

# Or use instance methods for convenience
node = graph.nodes.get_by_id(0)
updated_node = node.patch(name='new_name', location='dc2')

Path Computation

# Shortest path between nodes
path = graph.paths.shortest("1.1.1.1", "2.2.2.2")
print(f"Path cost: {path.cost}")
for path_nodes in path.paths:
    print(f"Path: {' -> '.join(path_nodes)}")

# Shortest path between networks/IPs
path = graph.paths.shortest_network("192.168.1.1", "192.168.2.1")

# Backup path (removing specific edges)
path = graph.paths.shortest(
    "1.1.1.1",
    "2.2.2.2",
    removed_edges=[("1.1.1.1", "3.3.3.3")]
)

Events

# Get network events
network_events = graph.events.get_network_events(last_minutes=60)
for event in network_events['network_up_down_events']:
    print(f"Network {event.event_object} is {event.event_status}")

# Get adjacency events
adjacency_events = graph.events.get_adjacency_events(
    start_time="2024-01-15T10:00:00Z",
    end_time="2024-01-15T11:00:00Z"
)

CLI Usage

The SDK includes a CLI tool accessible via the topo command:

List Graphs

# List all graphs
topo graphs --list

# Get latest graph
topo graphs --latest

# Filter by protocol
topo graphs --list --protocol ospf

# Filter by watcher
topo graphs --list --watcher production-watcher

Collect and Upload Topology

# Collect LSDB from devices
topo ingest inventory.yaml --protocol isis

# Collect and save to file
topo ingest inventory.yaml --output lsdb.txt

# Collect and upload to Topolograph
topo ingest inventory.yaml --upload --url http://localhost:8080

Compute Paths

# Shortest path between nodes
topo path --src 1.1.1.1 --dst 2.2.2.2

# Shortest path between networks
topo path --src 192.168.1.1 --dst 192.168.2.1 --network

# Use specific graph
topo path --src 1.1.1.1 --dst 2.2.2.2 --graph-time "2024-01-15T10:30:00Z"

Upload LSDB Files

# Upload a LSDB file
topo upload --file lsdb.txt --vendor FRR --protocol isis

# Upload with watcher name
topo upload --file lsdb.txt --vendor Cisco --protocol ospf --watcher prod-watcher

Supported Vendors and Protocols

OSPF

• Cisco: show ip ospf database router, show ip ospf database network, show ip ospf database external
• Juniper: show ospf database router extensive | no-more, etc.
• FRR/Quagga: show ip ospf database router, etc.
• Arista: show ip ospf database router detail, etc.
• Nokia: show router ospf database router detail, etc.

IS-IS

• Cisco: show isis database detail
• Juniper: show isis database extensive
• FRR: show isis database detail
• Nokia: show router isis database detail
• Huawei: display isis lsdb verbose

Authentication

The SDK supports multiple authentication methods (in priority order):

1. Explicit token parameter:

   topo = Topolograph(url="...", token="your-token")
   

2. Environment variable:

   export TOPOLOGRAPH_TOKEN="your-token"
   

3. Basic authentication:

   topo = Topolograph(url="...", username="user", password="pass")
   

Error Handling

The SDK raises custom exceptions for different error scenarios:

from topolograph.exceptions import (
    AuthenticationError,
    NotFoundError,
    ValidationError,
    APIError
)

try:
    graph = topo.graphs.get_by_time("invalid-time")
except NotFoundError:
    print("Graph not found")
except AuthenticationError:
    print("Authentication failed")
except APIError as e:
    print(f"API error: {e}")

Testing

Run integration tests with containerlab:

# Set environment variables
export TOPOLOGRAPH_URL="http://localhost:8080"
export TOPOLOGRAPH_TOKEN="your-token"

# Run tests
pytest tests/test_integration.py -v

Or use the manual test script:

python test_sdk.py

Development

Setup Development Environment

# Clone repository
git clone https://github.com/topolograph/topolograph-sdk.git
cd topolograph-sdk

# Install in development mode
pip install -e ".[dev]"

Project Structure

topolograph-sdk/
├── topolograph/          # SDK package
│   ├── client.py        # Core HTTP client
│   ├── resources/       # Resource objects (Graph, Node, Network, etc.)
│   ├── collector/       # SSH-based topology collection
│   └── upload/          # Upload pipeline
├── cli/                 # CLI interface
├── tests/               # Test suite
└── pyproject.toml       # Package configuration

License

Apache License 2.0 - See LICENSE file for details.

Contributing

Contributions are welcome! Please open an issue or submit a pull request.

Support

For issues, questions, or feature requests, please open an issue on GitHub.