ci: Add script to generate changelog (#1463)

scripts/gen-changelog.py

@@ -0,0 +1,42 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the terms described in the LICENSE file in
+# the root directory of this source tree.
+
+import requests
+import os
+
+def get_all_releases(token):
+    url = f"https://api.github.com/repos/meta-llama/llama-stack/releases"
+    headers = {"Accept": "application/vnd.github.v3+json"}
+    
+    if token:
+        headers["Authorization"] = f"token {token}"
+    
+    response = requests.get(url, headers=headers)
+    
+    if response.status_code == 200:
+        return response.json()
+    else:
+        raise Exception(f"Error fetching releases: {response.status_code}, {response.text}")
+
+
+def merge_release_notes(output_file, token=None):
+    releases = get_all_releases(token)
+    
+    with open(output_file, "w", encoding="utf-8") as md_file:
+        md_file.write(f"# Changelog\n\n")
+        
+        for release in releases:
+            md_file.write(f"# {release['tag_name']}\n")
+            md_file.write(f"Published on: {release['published_at']}\n\n")
+            md_file.write(f"{release['body']}\n\n")
+            md_file.write("---\n\n")
+    
+    print(f"Merged release notes saved to {output_file}")
+
+if __name__ == "__main__":
+    OUTPUT_FILE = "CHANGELOG.md"
+    TOKEN = os.getenv("GITHUB_TOKEN")
+    merge_release_notes(OUTPUT_FILE, TOKEN)