Google Git
Sign in
android / platform / packages / modules / GeoTZ / d05657537627624cbe9c616d29cd3800b133aa06
commitd05657537627624cbe9c616d29cd3800b133aa06[log] [tgz]
authorNeil Fuller <[email protected]>Tue May 31 16:35:34 2022 +0100
committerNeil Fuller <[email protected]>Tue Jun 21 11:26:54 2022 +0100
tree2c1c3681ff1455cbe0b4fc3959901780cfcde937
parent5afe5927a06494299fcf17b98665f8e1a6d14873 [diff]
Add OfflineLocationTimeZoneProvider app support

Add support for deploying OfflineLocationTimeZoneProvider code in a
standalone app. This change focuses on build changes. Code changes are
handled in a follow-up change.

Changes to various build rules to support use of build targets in app
code, not just APEX.

Bug: 231906346
Test: Build only
Change-Id: I68f1afcac023a68c5485d4d6a927001dae51592d
4 files changed
tree: 2c1c3681ff1455cbe0b4fc3959901780cfcde937
  1. apex/
  2. common/
  3. data_pipeline/
  4. geotz_lookup/
  5. locationtzprovider/
  6. output_data/
  7. s2storage/
  8. tzbb_data/
  9. validation/
  10. download-tzbb-files.sh
  11. OWNERS
  12. PREUPLOAD.cfg
  13. README.md
  14. run-data-pipeline.sh
README.md

This directory contains code, tools and data for the AOSP reference location time zone provider. Location time zone providers are used for location-based time zone detection on Android. See Android's android.service.timezone.TimeZoneProviderService class for more details.

Directory structure

apex

  • Files associated with a proposed mainline module APEX to hold the AOSP reference location time zone provider.

common

  • Utility code shared between several subdirectories.

data_pipeline

  • Code for a host sample / reference data generation pipeline. See run-data-pipeline.sh below.

geotz_lookup

  • A high-level API for performing time zone ID lookups for a location using the tzs2.dat file. Supports host and device usage.

locationtzprovider

  • A reference location time zone provider that uses AOSP APIs to obtain location and the geotz_lookup APIs to obtain the time zone IDs to pass to the platform.

output_data

  • Holds the tzs2.dat file generated by run-data-pipeline.sh along with the associated license files.

s2storage

  • File reading / writing code and tools to support tzs2.dat generation on host, and the file's use on host and device. See s2storage/README.md for format details.

tzbb_data

  • Data / licenses from the external timezone-boundary-builder project. Used as input for the reference data generation pipeline.

validation

  • Tooling to help validate the tzs2.dat file against other data sources.

Data file update tools

download-tzbb-files.sh

run-data-pipeline.sh

  • Runs the data_pipeline data generation pipeline. It takes data from tzbb_data/, processes it, and puts the resulting tzs2.dat file in output_data/.