vyos-1x: VyOS command definitions, configuration scripts, and data

VyOS 1.1.x had its codebase split into way too many submodules for no good reason, which made it hard to navigate or write meaningful changelogs. As the code undergoes rewrite in the new style in VyOS 1.2.0+, we consolidate the rewritten code in this package.

If you just want to build a VyOS image, the repository you want is vyos-build. If you also want to contribute to VyOS, read on.

Package layout

data                   # Jinja2 templates
debian                 # Our package build system
interface-definitions  # Configuration interface (i.e. conf mode command) definitions
op-mode-definitions    # Operational command definitions
python                 # Programming library for accessing the config frontend/backend
schema                 # XML schema definition for conf mode and op mode commands
scripts                # Build-time scripts
smoketest              # Python Unittests for the CLI and system
src
    conf_mode/  # Configuration mode scripts
    op_mode/    # Operational mode scripts
    completion/ # Completion helpers
    validators/ # Value validators
    helpers/    # Misc helpers
    migration-scripts # Migration scripts
    tests/      # Unit tests

Interface/command definitions

Raw node.def files for the old backend are no longer written by hand or generated by custom scripts. They are all now produced from a unified XML format that supports a strict subset of the old backend features. In particular, it intentionally does not support embedded shell scripts, default values, and value "types", instead delegating those tasks to external scripts.

Configuration interface definitions must conform to the schema found in schema/interface_definition.rng and operational command definitions must conform to schema/op-mode-definition.rng. Schema checks are performed at build time, so a package with malformed interface definitions will not build.

Configuration scripts

The guidelines in a nutshell:

Use separate functions for retrieving configuration data, validating it, and generating taret config, see our documentation for the common structure
Use the get_config_dict() API as much as possible when retrieving values from the CLI
Use a template processor when the format is more complex than just one line (our standard is Jinja2)

Tests

Tests are executed at build time, you can also execute them by hand with:

pipenv install --dev
pipenv shell
make test

Runtime (Smoke Tests)

Runtime tests are executed by the CI system on a running VyOS instance inside QEMU. The testcases can be found inside the smoketest subdirectory which will be placed into the vyos-1x-smoketest package.

Thanks to all the people who already contributed!

License

sarthurdev/vyos-1x

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