Prebuilt APEXes are recoreded in apexkeys.txt

apexkeys.txt now correctly lists prebuilt APEXes with keys specified as
PRESIGNED.

This change also fixes a bug that non-installable APEXes are listed in
the file.

Bug: 131130235
Test: m out/soong/apexkeys.txt and check that
com.android.apex.cts.shim.apex is listed there with PRESIGNED keys.

Change-Id: Ib6d391a82864714743a1cc59cd655bea917b5073

2 files changed, 35 insertions, 5 deletions

diff --git a/apex/apex.go b/apex/apex.go
index 004de86c..178927da 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -1362,11 +1362,15 @@ func (p *Prebuilt) Srcs() android.Paths {
 	return android.Paths{p.outputApex}
 }
 
+func (p *Prebuilt) InstallFilename() string {
+	return proptools.StringDefault(p.properties.Filename, p.BaseModuleName()+imageApexSuffix)
+}
+
 func (p *Prebuilt) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 	// TODO(jungjw): Check the key validity.
 	p.inputApex = p.Prebuilt().SingleSourcePath(ctx)
 	p.installDir = android.PathForModuleInstall(ctx, "apex")
-	p.installFilename = proptools.StringDefault(p.properties.Filename, ctx.ModuleName()+imageApexSuffix)
+	p.installFilename = p.InstallFilename()
 	if !strings.HasSuffix(p.installFilename, imageApexSuffix) {
 		ctx.ModuleErrorf("filename should end in %s for prebuilt_apex", imageApexSuffix)
 	}
diff --git a/apex/key.go b/apex/key.go
index a627e4bc..6ee3dca3 100644
--- a/apex/key.go
+++ b/apex/key.go
@@ -16,6 +16,7 @@ package apex
 
 import (
 	"fmt"
+	"sort"
 	"strings"
 
 	"android/soong/android"
@@ -106,12 +107,31 @@ type apexKeysText struct {
 
 func (s *apexKeysText) GenerateBuildActions(ctx android.SingletonContext) {
 	s.output = android.PathForOutput(ctx, "apexkeys.txt")
-	var filecontent strings.Builder
+	apexModulesMap := make(map[string]android.Module)
 	ctx.VisitAllModules(func(module android.Module) {
-		if m, ok := module.(android.Module); ok && !m.Enabled() {
-			return
+		if m, ok := module.(*apexBundle); ok && m.Enabled() && m.installable() {
+			apexModulesMap[m.Name()] = m
 		}
+	})
+
+	// Find prebuilts and let them override apexBundle if they are preferred
+	ctx.VisitAllModules(func(module android.Module) {
+		if m, ok := module.(*Prebuilt); ok && m.Enabled() && m.installable() &&
+			m.Prebuilt().UsePrebuilt() {
+			apexModulesMap[m.BaseModuleName()] = m
+		}
+	})
+
+	// iterating over map does not give consistent ordering in golang
+	var moduleNames []string
+	for key, _ := range apexModulesMap {
+		moduleNames = append(moduleNames, key)
+	}
+	sort.Strings(moduleNames)
 
+	var filecontent strings.Builder
+	for _, key := range moduleNames {
+		module := apexModulesMap[key]
 		if m, ok := module.(*apexBundle); ok {
 			fmt.Fprintf(&filecontent,
 				"name=%q public_key=%q private_key=%q container_certificate=%q container_private_key=%q\\n",
@@ -120,8 +140,14 @@ func (s *apexKeysText) GenerateBuildActions(ctx android.SingletonContext) {
 				m.private_key_file.String(),
 				m.container_certificate_file.String(),
 				m.container_private_key_file.String())
+		} else if m, ok := module.(*Prebuilt); ok {
+			fmt.Fprintf(&filecontent,
+				"name=%q public_key=%q private_key=%q container_certificate=%q container_private_key=%q\\n",
+				m.InstallFilename(),
+				"PRESIGNED", "PRESIGNED", "PRESIGNED", "PRESIGNED")
 		}
-	})
+	}
+
 	ctx.Build(pctx, android.BuildParams{
 		Rule:        android.WriteFile,
 		Description: "apexkeys.txt",