Adding changelog update in API generator (opensearch-project#669)

* Update changelog with api generator

Signed-off-by: saimedhi <saimedhi@amazon.com>

* Update changelog with api generator

Signed-off-by: saimedhi <saimedhi@amazon.com>

---------

Signed-off-by: saimedhi <saimedhi@amazon.com>

Author: saimedhi

.github/workflows/update_api.yml

@@ -26,12 +26,6 @@ jobs:
           python3.7 -m pip install nox
       - name: Generate API
         run: nox -s generate
-      - name: Update CHANGELOG
-        uses: jacobtomlinson/gha-find-replace@v3
-        with:
-          find: "- Your contribution here."
-          replace: "- Updated opensearch-py to reflect the latest OpenSearch API spec.\n- Your contribution here."
-          include: "**CHANGELOG.md"
       - name: Get current date
         id: date
         run: echo "::set-output name=date::$(date +'%Y-%m-%d')"

CHANGELOG.md

@@ -22,8 +22,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 ### Fixed
 - Fix KeyError when scroll return no hits ([#616](https://github.com/opensearch-project/opensearch-py/pull/616))
 - Fix reuse of `OpenSearch` using `Urllib3HttpConnection` and `AsyncOpenSearch` after calling `close` ([#639](https://github.com/opensearch-project/opensearch-py/pull/639))
-### Automated API Update
-- Your contribution here.
+### Updated APIs
 ### Security
 ### Dependencies
 - Bumps `pytest-asyncio` from <=0.21.1 to <=0.23.4

utils/generate_api.py

@@ -764,6 +764,33 @@ def dump_modules(modules: Any) -> None:
     unasync.unasync_files(filepaths, rules)
     blacken(CODE_ROOT / "opensearchpy")
 
+    # Updating the CHANGELOG.md
+    response = requests.get(
+        "https://api.github.com/repos/opensearch-project/opensearch-api-specification/commits"
+    )
+    if response.ok:
+        commit_info = response.json()[0]
+        commit_url = commit_info["html_url"]
+        latest_commit_sha = commit_info.get("sha")
+    else:
+        raise Exception(
+            f"Failed to fetch opensearch-api-specification commit information. Status code: {response.status_code}"
+        )
+
+    with open("CHANGELOG.md", "r+", encoding="utf-8") as file:
+        content = file.read()
+        if "### Updated APIs" in content:
+            file_content = content.replace(
+                "### Updated APIs",
+                f"### Updated APIs\n- Updated opensearch-py APIs to reflect [opensearch-api-specification@{latest_commit_sha[:7]}]({commit_url})",
+                1,
+            )
+            file.seek(0)
+            file.write(file_content)
+            file.truncate()
+        else:
+            raise Exception("'Updated APIs' section is not present in CHANGELOG.md")
+
 
 if __name__ == "__main__":
     dump_modules(read_modules())