DO NOT MERGE [MetricsConfig Store] implement flat file store

This CL implements a simple flat file store for MetricsConfigs. It
allows for adding and deleting configs. All calls in this class are
blocking so they should be invoked on the worker thread.

Bug: 197247885
Test: m CarService
Test: atest CarServiceUnitTest:CarTelemetryServiceTest
Test: atest CarServiceUnitTest:MetricsConfigStoreTest

Change-Id: I1187449bf9f593590e3dfaf18de625237fb24bc3
4 files changed
tree: 09e22506de3b4bcc355f47d1a3e2f66ab9b0075b
  1. car-admin-ui-lib/
  2. car-internal-lib/
  3. car-lib/
  4. car-maps-placeholder/
  5. car-systemtest-lib/
  6. car-test-lib/
  7. car-usb-handler/
  8. car_product/
  9. cpp/
  10. data/
  11. experimental/
  12. FrameworkPackageStubs/
  13. obd2-lib/
  14. packages/
  15. procfs-inspector/
  16. service/
  17. tests/
  18. tools/
  19. user/
  20. vehicle-hal-support-lib/
  21. .clang-format
  22. .gitignore
  23. Android.mk
  24. CleanSpec.mk
  25. CPPLINT.cfg
  26. OWNERS
  27. PREUPLOAD.cfg
  28. README.md
  29. TEST_MAPPING
README.md

Native (C++) code format is required to be compatible with .clang-format file. Run

git clang-format --style=file --extension='h,cpp,cc' HEAD~

Note that clang-format is not desirable for Android java files. Therefore the command line above is limited to specific extensions.