Add a tool to merge two partial OTAs
Some partners have large number of products that share common
images. Generating OTAs for all these products waste a lot of CPU
cycles, because we waste time diffing the same images multiple times.
To mitigate this, add a tool for merging partial OTAs. Partners can
generate a partial OTA for common images, and re-use the generated OTA
by merging with each product specific OTA.
Bug: 227848550
Test: Run merge_otas.py on 4 OTAs, install the generated OTA
Change-Id: Ie38d522cdc9b89b1123b3d8190516c3648f99788
diff --git a/tools/releasetools/Android.bp b/tools/releasetools/Android.bp
index 8063ae2..e2173e4 100644
--- a/tools/releasetools/Android.bp
+++ b/tools/releasetools/Android.bp
@@ -150,8 +150,6 @@
"edify_generator.py",
"non_ab_ota.py",
"ota_from_target_files.py",
- "ota_utils.py",
- "payload_signer.py",
"target_files_diff.py",
],
libs: [
@@ -161,6 +159,7 @@
"releasetools_verity_utils",
"apex_manifest",
"care_map_proto_py",
+ "ota_utils_lib",
],
required: [
"brillo_update_payload",
@@ -325,6 +324,33 @@
],
}
+python_library_host {
+ name: "ota_utils_lib",
+ srcs: [
+ "ota_utils.py",
+ "payload_signer.py",
+ ],
+}
+
+python_binary_host {
+ name: "merge_ota",
+ version: {
+ py3: {
+ embedded_launcher: true,
+ },
+ },
+ srcs: [
+ "merge_ota.py",
+ ],
+ libs: [
+ "ota_metadata_proto",
+ "update_payload",
+ "care_map_proto_py",
+ "releasetools_common",
+ "ota_utils_lib",
+ ],
+}
+
python_binary_host {
name: "build_image",
defaults: [
@@ -545,6 +571,7 @@
"sign_apex.py",
"sign_target_files_apks.py",
"validate_target_files.py",
+ "merge_ota.py",
":releasetools_merge_sources",
":releasetools_merge_tests",
@@ -561,6 +588,7 @@
"releasetools_img_from_target_files",
"releasetools_ota_from_target_files",
"releasetools_verity_utils",
+ "update_payload",
],
data: [
"testdata/**/*",