Python: Print shasum when uploading bundles

Author: hoodmane

.github/workflows/release-python-runtime.yml

@@ -10,6 +10,9 @@ jobs:
       - uses: actions/checkout@v4
         with:
           show-progress: false
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.13'
       - name: Setup Linux
         if: runner.os == 'Linux'
         run: |
@@ -37,5 +40,5 @@ jobs:
           bazel build @workerd//src/pyodide:python_bundles @workerd//src/pyodide:bundle_version_info --remote_cache=https://bazel:${{ secrets.BAZEL_CACHE_KEY }}@bazel-remote-cache.devprod.cloudflare.dev
           # boto3 v1.36.0 fails with:
           # NotImplemented error occurred in CreateMultipartUpload operation: Header 'x-amz-checksum-algorithm' with value 'CRC32' not implemented
-          pip install 'boto3<1.36.0'
+          pip install 'boto3<1.36.0' requests
           python3 src/pyodide/upload_bundles.py

src/pyodide/upload_bundles.py

@@ -1,8 +1,10 @@
 import json
 import subprocess
 import sys
+from base64 import b64encode
 from copy import deepcopy
 from functools import cache
+from hashlib import file_digest
 from os import environ
 from pathlib import Path
 
@@ -80,6 +82,15 @@ def main():
         info["backport"] = b
         key = bundle_key(**info)
         print(f"Uploading version {ver} backport {b}")
+        shasum = (
+            "sha256-"
+            + b64encode(file_digest(path.open("rb"), "sha256").digest()).decode()
+        )
+        i = " " * 8
+        print("Update python_metadata.bzl with:\n")
+        print(i + f'"backport": "{b}",')
+        print(i + f'"integrity": "{shasum}",')
+        print()
         s3.upload_file(str(path), "pyodide-capnp-bin", key)
     return 0