build: new workspace status script, new versioning scheme

This reimplements the workspace status script and fixes a bunch of
issues along the way:

1. The script is now in Python, which allows us to better express some
   complexity.
2. We now retrieve the Kubernetes version from
   third_party/go/repositories.bzl, thereby unhardcoding the Kubernetes
   version.
3. We now support for multiple 'products' with different versions.
   Currently we have only one product, which is metropolis. This is the
   basis for tying Git tags to releases of a particular codebase within
   the monorepo.
4. Git tags are now parsed to retrieve the version of a product, instead
   of it being hardcoded in the workspace status script.
5. We use a vX.Y.Z-devNNN versioning system for builds which have
   happened in between tags. NNN is the number of commits since vX.Y.Z.

This changes the current version of Metropolis from 0.1 to 0.1.0-dev440.

In an upcoming change we will implement a Go-side library to caputure
information about the workspace state, both the per-repo data like VCS
state and per-product data like versions. For now we keep a stopgap in
the new script to emit version data as expected by the current codebase.

Change-Id: I07cb17efc7d60aa269627a549f56ffa1bfdeb5b7
Reviewed-on: https://review.monogon.dev/c/monogon/+/2304
Reviewed-by: Lorenz Brun <lorenz@monogon.tech>
Reviewed-by: Leopold Schabel <leo@monogon.tech>
Tested-by: Jenkins CI
Reviewed-by: Tim Windelschmidt <tim@monogon.tech>
3 files changed
tree: 11c915326c4b2c7b16dec2f67f595a3cb9a5db3b
  1. .github/
  2. build/
  3. cloud/
  4. go/
  5. intellij/
  6. metropolis/
  7. net/
  8. third_party/
  9. tools/
  10. .bazelignore
  11. .bazelproject
  12. .bazelrc
  13. .bazelrc.sandboxroot
  14. .bazelversion
  15. .git-ignore-revs
  16. .gitignore
  17. BUILD.bazel
  18. CODING_STANDARDS.md
  19. go.mod
  20. go.sum
  21. LICENSE
  22. README.md
  23. SETUP.md
  24. shell.nix
  25. WORKSPACE
README.md

Monogon Monorepo

This is the main repository containing the source code for the Monogon Platform.

This is pre-release software - take a look, and check back later!

Environment

Our build environment is self-contained and requires only minimal host dependencies:

  • A Linux machine or VM.
  • Bazelisk >= v1.15.0 (or a working Nix environment).
  • A reasonably recent kernel with user namespaces enabled.
  • Working KVM with access to /dev/kvm (if you want to run tests).

Our docs assume that Bazelisk is available as bazel on your PATH.

Refer to SETUP.md for detailed instructions.

Monogon OS

Run a single node demo cluster

Build CLI and node image:

bazel build //metropolis/cli/dbg //:launch --config dbg

Launch an ephemeral test node:

bazel test //:launch --config dbg --test_output=streamed

Run a kubectl command while the test is running:

bazel-bin/metropolis/cli/dbg/dbg_/dbg kubectl describe node

Test suite

Run full test suite:

bazel test --config dbg //...