feat: standards, shared CI and release tooling for NAPALM drivers
STANDARDS.md binds every repository in the NAPALM org: one default branch, Conventional Commits, the device-types contract, test-driven development, clean-code limits, a quality ratchet for existing code, packaging rules and releases by tag to PyPI. napalm-standard holds what a tool can check: the conformance check (with release rules on a tag), the quality ratchet (ported from netOrk's quality_ratchet.py), and the Gitea release from the CHANGELOG section. .gitea/workflows/driver.yml is the CI every driver calls; template/ is a new driver's starting point and passes the check as it is.
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name: CI
|
||||
|
||||
on:
|
||||
push:
|
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branches: [main]
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tags: ["v*"]
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||||
pull_request:
|
||||
|
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jobs:
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driver:
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uses: NAPALM/driver-standard/.gitea/workflows/driver.yml@main
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with:
|
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standard-ref: main
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secrets:
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PYPI_TOKEN: ${{ secrets.PYPI_TOKEN }}
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__pycache__/
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*.egg-info/
|
||||
.venv/
|
||||
build/
|
||||
dist/
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||||
.coverage
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||||
.pytest_cache/
|
||||
.mypy_cache/
|
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.ruff_cache/
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# Changelog
|
||||
|
||||
All notable changes to this driver. The format follows
|
||||
[Keep a Changelog](https://keepachangelog.com/), versions follow
|
||||
[Semantic Versioning](https://semver.org/).
|
||||
|
||||
## [Unreleased]
|
||||
|
||||
## [0.1.0] - 2026-10-22
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||||
|
||||
### Added
|
||||
- `example` driver: facts from Example switches over SSH.
|
||||
@@ -0,0 +1,191 @@
|
||||
Apache License
|
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|
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Copyright 2026 Christian Manivong
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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limitations under the License.
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@@ -0,0 +1,45 @@
|
||||
# napalm-example
|
||||
|
||||
NAPALM driver for Example switches, built on
|
||||
[napalm-device-types](https://git.netork.io/NAPALM/napalm-device-types) (`SwitchDriver`).
|
||||
|
||||
## Tested against
|
||||
|
||||
| Model | Firmware |
|
||||
|---|---|
|
||||
| Example 24 | 1.0.0 |
|
||||
|
||||
## Connection
|
||||
|
||||
SSH on port 22. The account needs read access to `show version`.
|
||||
|
||||
```python
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||||
from napalm import get_network_driver
|
||||
|
||||
driver = get_network_driver("example")
|
||||
with driver("192.0.2.10", "admin", "secret") as device:
|
||||
print(device.get_facts())
|
||||
```
|
||||
|
||||
## Supported
|
||||
|
||||
| Getter / action | |
|
||||
|---|---|
|
||||
| `get_facts` | yes |
|
||||
|
||||
## Not supported
|
||||
|
||||
Configuration changes.
|
||||
|
||||
## Development
|
||||
|
||||
The rules are in [STANDARDS.md](https://git.netork.io/NAPALM/driver-standard/src/branch/main/STANDARDS.md).
|
||||
|
||||
```bash
|
||||
python -m venv .venv && .venv/bin/pip install -e ".[dev]"
|
||||
.venv/bin/pytest --cov
|
||||
```
|
||||
|
||||
## License
|
||||
|
||||
Apache-2.0
|
||||
@@ -0,0 +1,5 @@
|
||||
"""NAPALM driver for Example switches."""
|
||||
|
||||
from napalm_example.driver import ExampleDriver
|
||||
|
||||
__all__ = ["ExampleDriver"]
|
||||
@@ -0,0 +1,93 @@
|
||||
"""NAPALM driver for Example switches over SSH.
|
||||
|
||||
Optional args
|
||||
-------------
|
||||
port : int
|
||||
SSH port (default 22).
|
||||
"""
|
||||
|
||||
from __future__ import annotations
|
||||
|
||||
import logging
|
||||
from typing import Any, Protocol
|
||||
|
||||
from napalm.base.exceptions import ConnectionException
|
||||
from napalm.base.models import FactsDict
|
||||
from napalm_device_types import SwitchDriver
|
||||
|
||||
from napalm_example.parsers import parse_version
|
||||
|
||||
LOG = logging.getLogger(__name__)
|
||||
|
||||
VENDOR = "Example"
|
||||
DEFAULT_PORT = 22
|
||||
|
||||
|
||||
class Transport(Protocol):
|
||||
def command(self, line: str) -> str: ...
|
||||
|
||||
def close(self) -> None: ...
|
||||
|
||||
|
||||
class ExampleDriver(SwitchDriver):
|
||||
"""A switch that answers line commands over SSH."""
|
||||
|
||||
def __init__(
|
||||
self,
|
||||
hostname: str,
|
||||
username: str,
|
||||
password: str,
|
||||
timeout: int = 60,
|
||||
optional_args: dict[str, Any] | None = None,
|
||||
) -> None:
|
||||
self.hostname = hostname
|
||||
self.username = username
|
||||
self.password = password
|
||||
self.timeout = timeout
|
||||
self.port = int((optional_args or {}).get("port", DEFAULT_PORT))
|
||||
self.transport: Transport | None = None
|
||||
|
||||
def open(self) -> None: # pragma: no cover - live I/O
|
||||
from netmiko import ConnectHandler
|
||||
|
||||
session = ConnectHandler(
|
||||
device_type="generic",
|
||||
host=self.hostname,
|
||||
port=self.port,
|
||||
username=self.username,
|
||||
password=self.password,
|
||||
timeout=self.timeout,
|
||||
)
|
||||
|
||||
class _Netmiko:
|
||||
def command(self, line: str) -> str:
|
||||
return str(session.send_command(line))
|
||||
|
||||
def close(self) -> None:
|
||||
session.disconnect()
|
||||
|
||||
self.transport = _Netmiko()
|
||||
|
||||
def close(self) -> None:
|
||||
if self.transport is not None:
|
||||
self.transport.close()
|
||||
self.transport = None
|
||||
|
||||
def _command(self, line: str) -> str:
|
||||
if self.transport is None:
|
||||
raise ConnectionException(f"{self.hostname}: not connected; call open() first")
|
||||
LOG.debug("%s: %s", self.hostname, line)
|
||||
return self.transport.command(line)
|
||||
|
||||
def get_facts(self) -> FactsDict:
|
||||
version = parse_version(self._command("show version"))
|
||||
return {
|
||||
"vendor": VENDOR,
|
||||
"model": version["model"],
|
||||
"hostname": version["hostname"],
|
||||
"fqdn": version["hostname"],
|
||||
"os_version": version["os_version"],
|
||||
"serial_number": version["serial_number"],
|
||||
"uptime": version["uptime"],
|
||||
"interface_list": [],
|
||||
}
|
||||
@@ -0,0 +1,45 @@
|
||||
"""Pure functions: device output in, typed values out. No I/O here."""
|
||||
|
||||
from __future__ import annotations
|
||||
|
||||
import re
|
||||
from typing import TypedDict
|
||||
|
||||
#: "Key : value" lines of `show version`.
|
||||
_FIELD = re.compile(r"^(?P<key>[^:\n]+?)\s*:\s*(?P<value>.*)$", re.MULTILINE)
|
||||
#: "3 days, 4:05:06" or "4:05:06".
|
||||
_UPTIME = re.compile(r"^(?:(?P<days>\d+) days?, )?(?P<h>\d+):(?P<m>\d\d):(?P<s>\d\d)$")
|
||||
_SECONDS_PER_DAY = 86400
|
||||
|
||||
|
||||
class VersionDict(TypedDict):
|
||||
model: str
|
||||
hostname: str
|
||||
os_version: str
|
||||
serial_number: str
|
||||
uptime: float
|
||||
|
||||
|
||||
def parse_uptime(text: str) -> float:
|
||||
"""Seconds from an uptime like ``3 days, 4:05:06``."""
|
||||
match = _UPTIME.match(text.strip())
|
||||
if not match:
|
||||
raise ValueError(f"unreadable uptime: {text!r}")
|
||||
days = int(match.group("days") or 0)
|
||||
hours, minutes, seconds = (int(match.group(k)) for k in ("h", "m", "s"))
|
||||
return float(days * _SECONDS_PER_DAY + hours * 3600 + minutes * 60 + seconds)
|
||||
|
||||
|
||||
def parse_version(text: str) -> VersionDict:
|
||||
"""Facts from ``show version``; a field the device did not print is an error."""
|
||||
fields = {m.group("key").strip(): m.group("value").strip() for m in _FIELD.finditer(text)}
|
||||
try:
|
||||
return {
|
||||
"model": text.splitlines()[0].removesuffix(" Switch").strip(),
|
||||
"hostname": fields["Hostname"],
|
||||
"os_version": fields["Firmware"],
|
||||
"serial_number": fields["Serial number"],
|
||||
"uptime": parse_uptime(fields["Uptime"]),
|
||||
}
|
||||
except KeyError as exc:
|
||||
raise ValueError(f"show version lacks {exc.args[0]}") from exc
|
||||
Whitespace-only changes.
@@ -0,0 +1,64 @@
|
||||
[build-system]
|
||||
requires = ["setuptools>=68"]
|
||||
build-backend = "setuptools.build_meta"
|
||||
|
||||
[project]
|
||||
name = "napalm-example"
|
||||
version = "0.1.0"
|
||||
description = "NAPALM driver for Example switches"
|
||||
readme = "README.md"
|
||||
license = "Apache-2.0"
|
||||
requires-python = ">=3.10"
|
||||
authors = [{ name = "Christian Manivong", email = "christian@manivong.de" }]
|
||||
classifiers = [
|
||||
"Programming Language :: Python :: 3",
|
||||
"Operating System :: OS Independent",
|
||||
"Topic :: System :: Networking",
|
||||
]
|
||||
dependencies = [
|
||||
"napalm>=5.0",
|
||||
"napalm-device-types>=4.21",
|
||||
]
|
||||
|
||||
[project.optional-dependencies]
|
||||
dev = ["pytest>=8", "pytest-cov>=5", "mypy>=1.11", "ruff>=0.6"]
|
||||
|
||||
[project.urls]
|
||||
Repository = "https://git.netork.io/NAPALM/napalm-example"
|
||||
Issues = "https://git.netork.io/NAPALM/napalm-example/issues"
|
||||
|
||||
[project.entry-points."napalm.drivers"]
|
||||
example = "napalm_example:ExampleDriver"
|
||||
|
||||
[tool.setuptools.packages.find]
|
||||
include = ["napalm_example*"]
|
||||
|
||||
[tool.setuptools.package-data]
|
||||
napalm_example = ["py.typed"]
|
||||
|
||||
[tool.ruff]
|
||||
line-length = 100
|
||||
target-version = "py310"
|
||||
|
||||
[tool.ruff.lint]
|
||||
select = ["E", "F", "I", "UP", "B"]
|
||||
|
||||
[tool.mypy]
|
||||
python_version = "3.10"
|
||||
strict = true
|
||||
# napalm itself is untyped, so every driver subclasses Any.
|
||||
disallow_subclassing_any = false
|
||||
|
||||
[[tool.mypy.overrides]]
|
||||
module = ["napalm.*"]
|
||||
ignore_missing_imports = true
|
||||
|
||||
[tool.pytest.ini_options]
|
||||
testpaths = ["tests"]
|
||||
|
||||
[tool.coverage.run]
|
||||
source = ["napalm_example"]
|
||||
|
||||
[tool.coverage.report]
|
||||
fail_under = 90
|
||||
exclude_also = ["pragma: no cover - live I/O"]
|
||||
@@ -0,0 +1,5 @@
|
||||
Example 24 Switch
|
||||
Hostname : sw-lab-01
|
||||
Firmware : 1.0.0
|
||||
Serial number : EX0000000001
|
||||
Uptime : 3 days, 4:05:06
|
||||
@@ -0,0 +1,66 @@
|
||||
"""The driver with its transport replaced: what it sends, what it returns."""
|
||||
|
||||
from __future__ import annotations
|
||||
|
||||
import pathlib
|
||||
|
||||
import pytest
|
||||
from napalm.base.exceptions import ConnectionException
|
||||
|
||||
from napalm_example import ExampleDriver
|
||||
|
||||
FIXTURES = pathlib.Path(__file__).parent / "fixtures"
|
||||
|
||||
|
||||
class FakeTransport:
|
||||
def __init__(self, answers: dict[str, str]) -> None:
|
||||
self.answers = answers
|
||||
self.sent: list[str] = []
|
||||
self.closed = False
|
||||
|
||||
def command(self, line: str) -> str:
|
||||
self.sent.append(line)
|
||||
return self.answers[line]
|
||||
|
||||
def close(self) -> None:
|
||||
self.closed = True
|
||||
|
||||
|
||||
@pytest.fixture
|
||||
def driver() -> ExampleDriver:
|
||||
return ExampleDriver("192.0.2.10", "admin", "secret")
|
||||
|
||||
|
||||
def test_get_facts(driver: ExampleDriver) -> None:
|
||||
show_version = (FIXTURES / "example24-1.0.0-show-version.txt").read_text()
|
||||
driver.transport = FakeTransport({"show version": show_version})
|
||||
|
||||
facts = driver.get_facts()
|
||||
|
||||
assert facts["vendor"] == "Example"
|
||||
assert facts["hostname"] == "sw-lab-01"
|
||||
assert facts["fqdn"] == "sw-lab-01"
|
||||
assert facts["interface_list"] == []
|
||||
assert facts["uptime"] == 273906.0
|
||||
|
||||
|
||||
def test_a_getter_before_open_raises(driver: ExampleDriver) -> None:
|
||||
with pytest.raises(ConnectionException):
|
||||
driver.get_facts()
|
||||
|
||||
|
||||
def test_close_closes_the_transport_once(driver: ExampleDriver) -> None:
|
||||
transport = FakeTransport({})
|
||||
driver.transport = transport
|
||||
|
||||
driver.close()
|
||||
driver.close()
|
||||
|
||||
assert transport.closed
|
||||
assert driver.transport is None
|
||||
|
||||
|
||||
def test_the_driver_is_registered_under_its_name() -> None:
|
||||
from napalm import get_network_driver
|
||||
|
||||
assert get_network_driver("example") is ExampleDriver
|
||||
@@ -0,0 +1,41 @@
|
||||
"""Parsers against recorded device output."""
|
||||
|
||||
from __future__ import annotations
|
||||
|
||||
import pathlib
|
||||
|
||||
import pytest
|
||||
|
||||
from napalm_example.parsers import parse_uptime, parse_version
|
||||
|
||||
FIXTURES = pathlib.Path(__file__).parent / "fixtures"
|
||||
|
||||
|
||||
def test_version_output_becomes_facts() -> None:
|
||||
text = (FIXTURES / "example24-1.0.0-show-version.txt").read_text()
|
||||
|
||||
assert parse_version(text) == {
|
||||
"model": "Example 24",
|
||||
"hostname": "sw-lab-01",
|
||||
"os_version": "1.0.0",
|
||||
"serial_number": "EX0000000001",
|
||||
"uptime": 273906.0,
|
||||
}
|
||||
|
||||
|
||||
def test_a_missing_field_is_an_error_not_an_empty_value() -> None:
|
||||
with pytest.raises(ValueError, match="Serial number"):
|
||||
parse_version("Example 24 Switch\nHostname : a\nFirmware : 1\nUptime : 0:00:01\n")
|
||||
|
||||
|
||||
@pytest.mark.parametrize(
|
||||
("text", "seconds"),
|
||||
[("0:00:01", 1.0), ("1 day, 0:00:00", 86400.0), ("3 days, 4:05:06", 273906.0)],
|
||||
)
|
||||
def test_uptime(text: str, seconds: float) -> None:
|
||||
assert parse_uptime(text) == seconds
|
||||
|
||||
|
||||
def test_an_unreadable_uptime_is_an_error() -> None:
|
||||
with pytest.raises(ValueError, match="uptime"):
|
||||
parse_uptime("soon")
|
||||
Reference in new issue
Block a user