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build: fix generation of large .vdi images

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Instead of loading the whole image into the memory when generating the
sha256 sum, we load the file in chunks and update the hash incrementally
to avoid MemoryError in python. Also remove a stray empty line.

Fixes: #13056
Signed-off-by: Adones Pitogo <pitogo.adones@gmail.com>
(mention empty line removal, adds Fixes from PR)
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
This commit is contained in:
Adones Pitogo 2023-07-11 13:31:50 +08:00 committed by Christian Lamparter
parent 2d5f7035cf
commit bdb4b78210
1 changed files with 8 additions and 2 deletions
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10
scripts/json_add_image_info.py
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@ -13,7 +13,6 @@ if len(argv) != 2:
json_path = Path(argv[1])
file_path = Path(getenv("FILE_DIR")) / getenv("FILE_NAME")
if not file_path.is_file():
print("Skip JSON creation for non existing file", file_path)
exit(0)
@ -37,7 +36,14 @@ def get_titles():
device_id = getenv("DEVICE_ID")
hash_file = hashlib.sha256(file_path.read_bytes()).hexdigest()
sha256_hash = hashlib.sha256()
with open(str(file_path),"rb") as f:
# Read and update hash string value in blocks of 4K
for byte_block in iter(lambda: f.read(4096),b""):
sha256_hash.update(byte_block)
hash_file = sha256_hash.hexdigest()
if file_path.with_suffix(file_path.suffix + ".sha256sum").exists():
hash_unsigned = (