| commit | b7545f9e07683ec2ceb8f6def92dc324ab255484 | [log] [tgz] |
|---|---|---|
| author | Anton Hansson <hansson@google.com> | Tue Nov 24 09:32:14 2020 +0000 |
| committer | Anton Hansson <hansson@google.com> | Tue Jan 05 15:01:30 2021 +0000 |
| tree | edbc38610dfcd5ac5232aeda3b8d6b781d34b0f5 | |
| parent | dddcb57582ac641e24df851cb130f04cca097455 [diff] |
Add more tests for derive_sdk Add some utility code to create protos in the right places, and add some simple tests for the current behavior. The actual logic used to derive the current versions will change in follow-up CLs, but I wanted to get some tests in for the current behavior first. Bug: 173188089 Test: atest derive_sdk_test Change-Id: I7e82a9bf87297df89fff043ecc9a68391991a018
SdkExtensions is a module that decides the extension SDK level of the device, and provides APIs for applications to query the extension SDK level.
The module is packaged in an apex, com.android.sdkext, and has two components:
bin/derive_sdk: Native binary that runs early in the device boot process and reads metadata of other modules, to set system properties relating to the extension SDK (for instance build.version.extensions.r).javalib/framework-sdkextension.jar: This is a jar on the bootclasspath that exposes APIs to applications to query the extension SDK level.derive_sdk is a program that reads metadata stored in other apex modules, in the form of binary protobuf files in subpath etc/sdkinfo.binarypb inside each apex. The structure of this protobuf can be seen here. The exact steps for converting a set of metadata files to actual extension versions is likely to change over time, and should not be depended upon.
The module exposes a java class SdkExtensions in the package android.os.ext. The method getExtensionVersion(int) can be used to read the version of a particular sdk extension, e.g. getExtensionVersion(Build.VERSION_CODES.R).
For every new Android SDK level a new extension version should be defined. These are the steps necessary to do that:
SdkExtensions.getExtensionVersion API support the new extensions.RollbackManagerServiceImpl#getExtensionVersions to account for the new extension version.TODO(b/173188089): expand this section when derive_sdk is reimplemented