commit | e810652ad4bdb2e9566178c9df32990c85839262 | [log] [tgz] |
---|---|---|
author | Anton Hansson <hansson@google.com> | Wed Dec 30 11:33:31 2020 +0000 |
committer | Anton Hansson <hansson@google.com> | Thu Jan 07 12:52:59 2021 +0000 |
tree | 68c2c78413009bd7dc467cc8a5df5a8dbfb45d30 | |
parent | c6328fed318b2e0bf3ac04383ac0a6f65de8e225 [diff] |
Add validation of db before and after modification Add various consistency checks of the database: - no duplicate extension SDKs - no duplicate module requirements in one SDK - no version requirements "moving backwards" ..with associated tests. Also add verification of the checked in database to presubmit tests (the build of the binarypb should also fail). Bug: 173188089 Test: atest gen_sdk_test Change-Id: I10436cdde1e8829065d77be53d5f10b7264a5a58
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