USHIFT-2474: remove gh dependency in release notes script

scripts/release-notes/gen_ec_release_notes.py

@@ -21,10 +21,10 @@
 
 *Draft Release*
 
-After the tag is present, running the script again causes it to use gh
-to produce a draft release with a preamble that includes download URLs
-and a body that is auto-generated by GitHub's service based on the
-pull requests that have merged since the last tagged release.
+After the tag is present, running the script again causes it produce a
+draft release with a preamble that includes download URLs and a body
+that is auto-generated by GitHub's service based on the pull requests
+that have merged since the last tagged release.
 
 *Publishing Release*
 
@@ -34,8 +34,8 @@
 
 NOTE:
 
-  To use this script, you must have the GitHub command line tool "gh"
-  installed and you must have enough privileges on the
+  To use this script, you must have a GitHub token configured in the
+  environment variable GITHUB_TOKEN with enough privileges on the
   openshift/microshift repository to create releases.
 
 """
@@ -44,6 +44,7 @@
 import collections
 import datetime
 import html.parser
+import json
 import os
 import re
 import subprocess
@@ -73,10 +74,13 @@
     re.VERBOSE,
 )
 
+# Save our token for use later
+GITHUB_TOKEN = os.environ.get('GITHUB_TOKEN')
+
 # Include the major.minor version string in this list to ignore
 # processing very old versions for which we do not anticipate future
 # candidate builds.
-OLD_VERSIONS = ['4.12', '4.13', '4.14']
+OLD_VERSIONS = ['4.12', '4.13', '4.14', '4.15']
 
 
 # Representation of one release
@@ -91,6 +95,7 @@ def main():
     The main function of the script. It runs the `check_one()` function for both 'ocp-dev-preview'
     and 'ocp' release types and for a specified version depending upon provided arguments.
     """
+
     parser = argparse.ArgumentParser(
         description=__doc__,
         formatter_class=argparse.RawDescriptionHelpFormatter,
@@ -129,6 +134,9 @@ def main():
     )
     args = parser.parse_args()
 
+    if not GITHUB_TOKEN:
+        raise RuntimeError('GITHUB_TOKEN does not appear to be set')
+
     new_releases = []
     if args.ec:
         new_releases.extend(find_new_releases(URL_BASE, 'ocp-dev-preview'))
@@ -290,17 +298,10 @@ def check_for_new_releases(url_base, release_type, version):
 
     # Check if the release already exists
     print(f"Checking for release {release_name}...")
-    try:
-        subprocess.run(["gh", "release", "view", release_name],
-                       check=True,
-                       stdout=subprocess.DEVNULL,
-                       stderr=subprocess.DEVNULL,
-                       )
-    except subprocess.CalledProcessError:
-        print("Not found")
-    else:
+    if github_release_exists(release_name):
         print("Found an existing release, no work to do")
         return None
+    print("Not found")
 
     return Release(
         release_name,
@@ -378,15 +379,53 @@ def publish_release(new_release, take_action):
 
     # Create draft release with message that includes download URLs and history
     try:
-        subprocess.run(["gh", "release", "create",
-                        "--prerelease",
-                        "--notes", notes,
-                        "--generate-notes",
-                        release_name,
-                        ],
-                       check=True)
-    except subprocess.CalledProcessError as err:
-        print(f"Failed to create the release: {err}")
+        github_release_create(release_name, notes)
+    except Exception as err:
+        print(f"Failed to create the release {release_name}: {err}")
+        raise
+
+
+def github_release_create(tag, notes_header):
+    results = github(
+        '/repos/openshift/microshift/releases',
+        tag_name=tag,
+        name=tag,
+        body=notes_header,
+        draft=False,
+        prerelease=True,
+        generate_release_notes=True,
+    )
+    print(f'Created new release {tag}')
+    print()
+    print(results['html_url'])
+    print()
+    print(results['body'])
+
+
+def github_release_exists(tag):
+    try:
+        github(f'/repos/openshift/microshift/releases/tags/{tag}')
+        return True
+    except Exception:
+        return False
+
+
+def github(path, **data):
+    url = f'https://api.github.com/{path.lstrip("/")}'
+    if data:
+        r = request.Request(
+            url=url,
+            data=json.dumps(data).encode('utf-8'),
+        )
+    else:
+        r = request.Request(url=url)
+    print(r.get_method(), url, data)
+    r.add_header('Accept', 'application/vnd.github+json')
+    r.add_header('User-agent', 'microshift-release-notes')
+    r.add_header('Authorization', f'Bearer {GITHUB_TOKEN}')
+    r.add_header('X-GitHub-Api-Version', '2022-11-28')
+    response = request.urlopen(r)
+    return json.loads(response.read().decode('utf-8'))
 
 
 if __name__ == "__main__":