From ad0177b1fb6b78edd2f15c901c7586d37581a6d5 Mon Sep 17 00:00:00 2001
From: Jaewoong Jung <jungjw@google.com>
Date: Fri, 24 Apr 2020 15:22:40 -0700
Subject: [PATCH] Add overrides to runtime_resource_overlay

(This is a cherry-pick change.)

Bug: 154928457
Test: app_test.go
Change-Id: Ia52bb9fd18c22b1a02d7b36afd41561cec0473f0
Merged-In: Ia52bb9fd18c22b1a02d7b36afd41561cec0473f0
---
 java/androidmk.go |  1 +
 java/app.go       |  7 +++++++
 java/app_test.go  | 15 ++++++++++++---
 3 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/java/androidmk.go b/java/androidmk.go
index 68da23ed8..2c2919218 100644
--- a/java/androidmk.go
+++ b/java/androidmk.go
@@ -676,6 +676,7 @@ func (r *RuntimeResourceOverlay) AndroidMkEntries() []android.AndroidMkEntries {
 			func(entries *android.AndroidMkEntries) {
 				entries.SetString("LOCAL_CERTIFICATE", r.certificate.AndroidMkString())
 				entries.SetPath("LOCAL_MODULE_PATH", r.installDir.ToMakePath())
+				entries.AddStrings("LOCAL_OVERRIDES_PACKAGES", r.properties.Overrides...)
 			},
 		},
 	}}
diff --git a/java/app.go b/java/app.go
index afc4a60f8..3200955a7 100755
--- a/java/app.go
+++ b/java/app.go
@@ -1410,6 +1410,13 @@ type RuntimeResourceOverlayProperties struct {
 
 	// list of android_app modules whose resources are extracted and linked against
 	Resource_libs []string
+
+	// Names of modules to be overridden. Listed modules can only be other overlays
+	// (in Make or Soong).
+	// This does not completely prevent installation of the overridden overlays, but if both
+	// overlays would be installed by default (in PRODUCT_PACKAGES) the other overlay will be removed
+	// from PRODUCT_PACKAGES.
+	Overrides []string
 }
 
 func (r *RuntimeResourceOverlay) DepsMutator(ctx android.BottomUpMutatorContext) {
diff --git a/java/app_test.go b/java/app_test.go
index 7b04e4629..09fc3ee49 100644
--- a/java/app_test.go
+++ b/java/app_test.go
@@ -2470,6 +2470,7 @@ func TestRuntimeResourceOverlay(t *testing.T) {
 			certificate: "platform",
 			product_specific: true,
 			theme: "faza",
+			overrides: ["foo"],
 		}
 
 		android_library {
@@ -2517,14 +2518,15 @@ func TestRuntimeResourceOverlay(t *testing.T) {
 	if expected != signingFlag {
 		t.Errorf("Incorrect signing flags, expected: %q, got: %q", expected, signingFlag)
 	}
-	path := android.AndroidMkEntriesForTest(t, config, "", m.Module())[0].EntryMap["LOCAL_CERTIFICATE"]
+	androidMkEntries := android.AndroidMkEntriesForTest(t, config, "", m.Module())[0]
+	path := androidMkEntries.EntryMap["LOCAL_CERTIFICATE"]
 	expectedPath := []string{"build/make/target/product/security/platform.x509.pem"}
 	if !reflect.DeepEqual(path, expectedPath) {
 		t.Errorf("Unexpected LOCAL_CERTIFICATE value: %v, expected: %v", path, expectedPath)
 	}
 
 	// Check device location.
-	path = android.AndroidMkEntriesForTest(t, config, "", m.Module())[0].EntryMap["LOCAL_MODULE_PATH"]
+	path = androidMkEntries.EntryMap["LOCAL_MODULE_PATH"]
 	expectedPath = []string{"/tmp/target/product/test_device/product/overlay"}
 	if !reflect.DeepEqual(path, expectedPath) {
 		t.Errorf("Unexpected LOCAL_MODULE_PATH value: %v, expected: %v", path, expectedPath)
@@ -2532,9 +2534,16 @@ func TestRuntimeResourceOverlay(t *testing.T) {
 
 	// A themed module has a different device location
 	m = ctx.ModuleForTests("foo_themed", "android_common")
-	path = android.AndroidMkEntriesForTest(t, config, "", m.Module())[0].EntryMap["LOCAL_MODULE_PATH"]
+	androidMkEntries = android.AndroidMkEntriesForTest(t, config, "", m.Module())[0]
+	path = androidMkEntries.EntryMap["LOCAL_MODULE_PATH"]
 	expectedPath = []string{"/tmp/target/product/test_device/product/overlay/faza"}
 	if !reflect.DeepEqual(path, expectedPath) {
 		t.Errorf("Unexpected LOCAL_MODULE_PATH value: %v, expected: %v", path, expectedPath)
 	}
+
+	overrides := androidMkEntries.EntryMap["LOCAL_OVERRIDES_PACKAGES"]
+	expectedOverrides := []string{"foo"}
+	if !reflect.DeepEqual(overrides, expectedOverrides) {
+		t.Errorf("Unexpected LOCAL_OVERRIDES_PACKAGES value: %v, expected: %v", overrides, expectedOverrides)
+	}
 }