Only include exported flags in android-flags.jar
The android-flags.jar file is consumed by apps built outside the
platform. These apps should only have access to exported flags (as
defined by the flag_declaration `is_exported` field).
Teach soong to filter out non-exported flags when generating
android-flags.jar.
Bug: 311151343
Test: m sdk dist # manually verify that $(gettop)/out/dist/android-flags.jar only contains exported flags
Change-Id: If66321fcffd920040dae3d99bd7ef69ff6925b18
diff --git a/aconfig/init.go b/aconfig/init.go
index 05fab4c..52d0755 100644
--- a/aconfig/init.go
+++ b/aconfig/init.go
@@ -71,9 +71,17 @@
// java_aconfig_libraries to be consumed by apps built outside the
// platform
exportedJavaRule = pctx.AndroidStaticRule("exported_java_aconfig_library",
+ // For each aconfig cache file, if the cache contains any
+ // exported flags, generate Java flag lookup code for the
+ // exported flags (only). Finally collect all generated code
+ // into the ${out} JAR file.
blueprint.RuleParams{
Command: `rm -rf ${out}.tmp` +
- `&& for cache in ${cache_files}; do ${aconfig} create-java-lib --cache $$cache --out ${out}.tmp; done` +
+ `&& for cache in ${cache_files}; do ` +
+ ` if [[ -n "$$(${aconfig} dump --cache $$cache --filter=is_exported:true --format='{fully_qualified_name}')" ]]; then ` +
+ ` ${aconfig} create-java-lib --cache $$cache --mode=exported --out ${out}.tmp; ` +
+ ` fi ` +
+ `done` +
`&& $soong_zip -write_if_changed -jar -o ${out} -C ${out}.tmp -D ${out}.tmp` +
`&& rm -rf ${out}.tmp`,
CommandDeps: []string{