From a1339afbb37a2a58df4ac2314a60dade379d0c5a Mon Sep 17 00:00:00 2001
From: Devin Moore <devinmoore@google.com>
Date: Thu, 11 Jan 2024 23:51:22 +0000
Subject: [PATCH] Add new function to create a new compat matrix for
 finalization

Creates the next version of the file based on the previous.
Replaces the "level" value with the new one in the file.
Adds a new Android.bp module that inherits from the previous.
Adds the current matrix file unconditional to all builds.
Adds the new matrix file contintionally based on release config.
This is used in finalize-vintf-resources.sh.

Ignore-AOSP-First: b/304316873#comment10

Test: ./finalize-vintf-resources.sh
Bug: 279809333
Change-Id: Ic14b3b82a33af3cce7a738dce5ad48112b8fb33d
---
 .../finalization/finalize-vintf-resources.sh  | 58 +++++++++++++++++++
 1 file changed, 58 insertions(+)

diff --git a/tools/finalization/finalize-vintf-resources.sh b/tools/finalization/finalize-vintf-resources.sh
index d150db3d16..1ea5b44fdc 100755
--- a/tools/finalization/finalize-vintf-resources.sh
+++ b/tools/finalization/finalize-vintf-resources.sh
@@ -9,6 +9,8 @@ function finalize_vintf_resources() {
     # TODO(b/314010764): finalize LL_NDK
     # TODO(b/314010177): finalize SELinux
 
+    create_new_compat_matrix
+
     # pre-finalization build target (trunk)
     local aidl_m="$top/build/soong/soong_ui.bash --make-mode TARGET_PRODUCT=aosp_arm64 TARGET_RELEASE=trunk TARGET_BUILD_VARIANT=userdebug DIST_DIR=out/dist"
     AIDL_TRANSITIVE_FREEZE=true $aidl_m aidl-freeze-api
@@ -18,5 +20,61 @@ function finalize_vintf_resources() {
     cp "$top/build/make/target/product/gsi/current.txt" "$top/build/make/target/product/gsi/$FINAL_PLATFORM_SDK_VERSION.txt"
 }
 
+function create_new_compat_matrix() {
+    # The compatibility matrix versions are bumped during vFRC
+    # These will change every time we have a new vFRC
+    export CURRENT_COMPATIBILITY_MATRIX_LEVEL='9'
+    export FINAL_COMPATIBILITY_MATRIX_LEVEL='10'
+
+    local top="$(dirname "$0")"/../../../..
+    source $top/build/make/tools/finalization/environment.sh
+
+    local current_file=compatibility_matrix."$CURRENT_COMPATIBILITY_MATRIX_LEVEL".xml
+    local final_file=compatibility_matrix."$FINAL_COMPATIBILITY_MATRIX_LEVEL".xml
+    local current_bp_module=framework_$current_file
+    local final_bp_module=framework_$final_file
+    local src=$top/hardware/interfaces/compatibility_matrices/$current_file
+    local dest=$top/hardware/interfaces/compatibility_matrices/$final_file
+    local bp_file=$top/hardware/interfaces/compatibility_matrices/Android.bp
+
+    # check to see if this script needs to be run
+    if grep -q $final_bp_module $bp_file; then
+      echo "Nothing to do because the new module exists"
+      return
+    fi
+
+    # build the targets required before touching the Android.bp/Android.mk files
+    local build_cmd="$top/build/soong/soong_ui.bash --make-mode TARGET_PRODUCT=aosp_arm64 TARGET_RELEASE=trunk TARGET_BUILD_VARIANT=userdebug DIST_DIR=out/dist"
+    $build_cmd bpfmt
+    $build_cmd bpmodify
+    $build_cmd queryview
+
+    # create the new file and modify the level
+    sed "s/level=\""$CURRENT_COMPATIBILITY_MATRIX_LEVEL"\"/level=\""$FINAL_COMPATIBILITY_MATRIX_LEVEL"\"/" "$src" > "$dest"
+
+    echo "
+      vintf_compatibility_matrix {
+          name: \"$final_bp_module\",
+          stem: \"$final_file\",
+          srcs: [
+              \"$final_file\",
+          ],
+      }" >> $bp_file
+
+    # get the previous kernel_configs properties and add them to the new module
+    local kernel_configs=$($top/out/host/linux-x86/bin/bazel query --config=queryview //hardware/interfaces/compatibility_matrices:"$current_bp_module"--android_common --output=build | grep kernel_configs | sed 's/[^\[]*\[\(.*\)],/\1/' | sed 's/ //g' | sed 's/\"//g')
+
+    $top/out/host/linux-x86/bin/bpmodify -m $final_bp_module -property kernel_configs -a $kernel_configs -w $bp_file
+
+    $top/out/host/linux-x86/bin/bpfmt -w $bp_file
+
+    local make_file=$top/hardware/interfaces/compatibility_matrices/Android.mk
+    # replace the current compat matrix in the make file with the final one
+    # the only place this resides is in the conditional addition
+    sed -i "s/$current_file/$final_file/g" $make_file
+    # add the current compat matrix to the unconditional addition
+    sed -i "/^    framework_compatibility_matrix.device.xml/i \    $current_bp_module \\\\" $make_file
+}
+
 finalize_vintf_resources