commit | b28af0093d5732aae331141dcf875f525f6d08c3 | [log] [tgz] |
---|---|---|
author | Kimberly Kreider <kkreider@google.com> | Wed Feb 10 01:34:55 2021 +0000 |
committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | Wed Feb 10 01:34:55 2021 +0000 |
tree | 60c8ecfd1fee9e70cd59af1cfbe1c3b81bdc1923 | |
parent | b1dd5cef1aa333d2010c44e58bd11b79c7aca3df [diff] | |
parent | 09661cce934cf6d78b1d02c0def5245056687132 [diff] |
[automerger skipped] Merge "Enable SdkExtension MTS tests to be included in mts-sdkextensions as well as regular mts." am: 8db3ac2492 am: fe183abac7 -s ours am: 09661cce93 -s ours am skip reason: Change-Id I309c46632c60381b9044edce6a221de54355b005 with SHA-1 e515568516 is in history Original change: https://android-review.googlesource.com/c/platform/packages/modules/SdkExtensions/+/1530677 MUST ONLY BE SUBMITTED BY AUTOMERGER Change-Id: I9fae2c30f9aa0386f88863ae9e82370237c80a12
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:
derive_sdk.cpp
by:GetSdkLevel
with the new enum setderive_sdk_test.cpp
verifying the new extensions worksSdkExtensions.getExtensionVersion
API support the new extensions.RollbackManagerServiceImpl#getExtensionVersions
to account for the new extension version.