tree 2091b0e7cee7b82b0201550662812c322fe986b1
parent 41f884c3a56daaa1877b86b6b23bd6c1c4ac84e3
author Keyong Han <keyonghan@google.com> 1661535504 +0000
committer CQ Bot Account <flutter-scoped@luci-project-accounts.iam.gserviceaccount.com> 1661535504 +0000

Add build+test separation support

1) devicelab_drone_build_test.py is the entry point of a task
  a) it builds artifacts (on VMs) if there are none yet
  b) it triggers a subbuild to run test on a devicelab bot, based on the pre-built artifacts
2) the triggered subbuilds run agains devicelab_test_drone.py
  a) builder `Linux Devicelab Test Drone` has been available in infra config: https://flutter.googlesource.com/infra/+/refs/heads/main/config/flutter_config.star#93

This CL
1) adds support for Linux targets only. Once validated, we will extend to Mac ones.
2) is a no-op for existing CI. Once this lands, we will validate the logic starting with `Linux_gallery` targets.

Successful LED runs:
1) build: https://ci.chromium.org/raw/build/logs.chromium.org/flutter/led/keyonghan_google.com/bf21dd57b3c0b119359e791aa702bffe2c7add72246631e72a7f33a4785a948c/+/build.proto?server=chromium-swarm.appspot.com
2) test: https://luci-milo.appspot.com/raw/build/logs.chromium.org/flutter/led/keyonghan_google.com/c85443802d56afc40f45510c78a155a3876985245a6fbfd8b3648f9dacf91252/+/build.proto

Change-Id: I3125f3a89e174a17e6f6c7b045cea783eb0db5f2
Bug: https://github.com/flutter/flutter/issues/103542
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/33021
Reviewed-by: Casey Hillers <chillers@google.com>
Commit-Queue: Keyong Han <keyonghan@google.com>