Check device's launch API level before using new compresison algo
If a T launch device later changes to LZ4(which is supported since U),
we will fallback to older compression algorithms, because if the full
OTA is applied on an T build, the update_engine on device won't support
lz4.
Bug: 295989519
Test: generate full OTA for T launched devices, make sure lz4 is not
used
Change-Id: I82fdf788e47e2a6daeaa4479bfecf317d8ebb5d5
diff --git a/tools/releasetools/ota_utils.py b/tools/releasetools/ota_utils.py
index 68c6887..f288a9c 100644
--- a/tools/releasetools/ota_utils.py
+++ b/tools/releasetools/ota_utils.py
@@ -51,6 +51,19 @@
TARGET_FILES_IMAGES_SUBDIR = ["IMAGES", "PREBUILT_IMAGES", "RADIO"]
+# Key is the compression algorithm, value is minimum API level required to
+# use this compression algorithm for VABC OTA on device.
+VABC_COMPRESSION_PARAM_SUPPORT = {
+ "gz": 31,
+ "brotli": 31,
+ "none": 31,
+ # lz4 support is added in Android U
+ "lz4": 34,
+ # zstd support is added in Android V
+ "zstd": 35,
+}
+
+
def FinalizeMetadata(metadata, input_file, output_file, needed_property_files=None, package_key=None, pw=None):
"""Finalizes the metadata and signs an A/B OTA package.
@@ -727,6 +740,7 @@
logger.info("target files %s is already extracted", path)
return path
extracted_dir = common.MakeTempDir("target_files")
+ logger.info(f"Extracting target files {path} to {extracted_dir}")
common.UnzipToDir(path, extracted_dir, UNZIP_PATTERN + [""])
for subdir in TARGET_FILES_IMAGES_SUBDIR:
image_dir = os.path.join(extracted_dir, subdir)
@@ -850,7 +864,7 @@
cmd.extend(["--dynamic_partition_info_file", dynamic_partition_info])
apex_info = os.path.join(
- target_dir, "META", "apex_info.pb")
+ target_dir, "META", "apex_info.pb")
if os.path.exists(apex_info):
cmd.extend(["--apex_info_file", apex_info])