[ci] Add workflow to cc teams

As discussed in https://discuss.tvm.apache.org/t/rfc-remove-codeowners/12095/2?u=driazati, this adds a mechanism to auto-tag people based on PR/issue titles and labels. This should improve visibility across the project and make it easy for interested people to subscribe to various topics.

Details on usage will be posted in the relevant issue: apache#10317

.github/workflows/tag_teams.yml

@@ -0,0 +1,47 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+# GH actions.
+# We use it to cover windows and mac builds
+# Jenkins is still the primary CI
+
+name: Teams
+
+on:
+  # See https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#pull_request_target
+  pull_request_target:
+    types: [opened, reopened, edited, ready_for_review, labeled]
+  issues:
+    types: [opened, edited, reopened, labeled]
+
+concurrency:
+  group: Teams-${{ github.event.pull_request.number }}-${{ github.event.issue.number }}
+  cancel-in-progress: true
+
+jobs:
+  tag-teams:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Tag people from relevant teams
+        env:
+          PR: ${{ toJson(github.event.pull_request) }}
+          ISSUE: ${{ toJson(github.event.issue) }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          set -eux
+          python tests/scripts/github_tag_teams.py || echo failed

tests/python/unittest/test_ci.py

@@ -19,6 +19,7 @@
 import subprocess
 import sys
 import json
+import textwrap
 import tempfile
 
 import pytest
@@ -394,5 +395,240 @@ def run(pr, check):
     )
 
 
+def assert_in(needle: str, haystack: str):
+    if needle not in haystack:
+        raise AssertionError(f"item not found:\n{needle}\nin:\n{haystack}")
+
+
+def test_github_tag_teams(tmpdir_factory):
+    tag_script = REPO_ROOT / "tests" / "scripts" / "github_tag_teams.py"
+
+    def run(type, data, check):
+        git = TempGit(tmpdir_factory.mktemp("tmp_git_dir"))
+        git.run("init")
+        git.run("checkout", "-b", "main")
+        git.run("remote", "add", "origin", "https://github.com/apache/tvm.git")
+
+        issue_body = """
+        some text
+        [temporary] opt-in: @person5
+
+        - something: @person1 @person2
+        - something else @person1 @person2
+        - something else2: @person1 @person2
+        - something-else @person1 @person2
+        """
+        comment1 = """
+        another thing: @person3
+        another-thing @person3
+        """
+        comment2 = """
+        something @person4
+        """
+        teams = {
+            "data": {
+                "repository": {
+                    "issue": {
+                        "body": issue_body,
+                        "comments": {"nodes": [{"body": comment1}, {"body": comment2}]},
+                    }
+                }
+            }
+        }
+        env = {
+            type: json.dumps(data),
+        }
+        proc = subprocess.run(
+            [
+                str(tag_script),
+                "--dry-run",
+                "--team-issue-json",
+                json.dumps(teams),
+            ],
+            stdout=subprocess.PIPE,
+            stderr=subprocess.PIPE,
+            encoding="utf-8",
+            cwd=git.cwd,
+            env=env,
+        )
+        if proc.returncode != 0:
+            raise RuntimeError(f"Process failed:\nstdout:\n{proc.stdout}\n\nstderr:\n{proc.stderr}")
+
+        assert_in(check, proc.stdout)
+
+    run(
+        "ISSUE",
+        {
+            "title": "A title",
+            "number": 1234,
+            "user": {
+                "login": "person5",
+            },
+            "labels": [{"name": "abc"}],
+            "body": textwrap.dedent(
+                """
+            hello
+            """.strip()
+            ),
+        },
+        "No one to cc, exiting",
+    )
+
+    run(
+        "ISSUE",
+        {
+            "title": "A title",
+            "number": 1234,
+            "user": {
+                "login": "person5",
+            },
+            "labels": [{"name": "abc"}],
+            "body": textwrap.dedent(
+                """
+            hello
+
+            cc @test
+            """.strip()
+            ),
+        },
+        "No one to cc, exiting",
+    )
+
+    run(
+        type="ISSUE",
+        data={
+            "title": "A title",
+            "number": 1234,
+            "user": {
+                "login": "person5",
+            },
+            "labels": [{"name": "something"}],
+            "body": textwrap.dedent(
+                """
+                hello
+
+                something"""
+            ),
+        },
+        check="would have updated issues/1234 with {'body': '\\nhello\\n\\nsomething\\n\\ncc @person1 @person2 @person4'}",
+    )
+
+    run(
+        type="ISSUE",
+        data={
+            "title": "A title",
+            "number": 1234,
+            "user": {
+                "login": "person6",
+            },
+            "labels": [{"name": "something"}],
+            "body": textwrap.dedent(
+                """
+                hello
+
+                something"""
+            ),
+        },
+        check="Author person6 is not opted in, quitting",
+    )
+
+    run(
+        type="ISSUE",
+        data={
+            "title": "A title",
+            "number": 1234,
+            "user": {
+                "login": "person5",
+            },
+            "labels": [{"name": "something"}],
+            "body": textwrap.dedent(
+                """
+                hello
+
+                cc @person1 @person2 @person4"""
+            ),
+        },
+        check="Everyone to cc is already cc'ed, no update needed",
+    )
+
+    run(
+        type="ISSUE",
+        data={
+            "title": "[something] A title",
+            "number": 1234,
+            "user": {
+                "login": "person5",
+            },
+            "labels": [{"name": "something2"}],
+            "body": textwrap.dedent(
+                """
+                hello
+
+                something"""
+            ),
+        },
+        check="would have updated issues/1234 with {'body': '\\nhello\\n\\nsomething\\n\\ncc @person1 @person2 @person4'}",
+    )
+
+    run(
+        type="ISSUE",
+        data={
+            "title": "[something] A title",
+            "number": 1234,
+            "user": {
+                "login": "person5",
+            },
+            "labels": [{"name": "something2"}],
+            "body": textwrap.dedent(
+                """
+                hello
+
+                cc @person1 @person2 @person4"""
+            ),
+        },
+        check="Everyone to cc is already cc'ed, no update needed",
+    )
+
+    run(
+        type="PR",
+        data={
+            "title": "[something] A title",
+            "number": 1234,
+            "isDraft": False,
+            "user": {
+                "login": "person5",
+            },
+            "labels": [{"name": "something2"}],
+            "body": textwrap.dedent(
+                """
+                hello
+
+                cc @person1 @person2 @person4"""
+            ),
+        },
+        check="Everyone to cc is already cc'ed, no update needed",
+    )
+
+    run(
+        type="PR",
+        data={
+            "title": "[something] A title",
+            "number": 1234,
+            "isDraft": True,
+            "user": {
+                "login": "person5",
+            },
+            "labels": [{"name": "something2"}],
+            "body": textwrap.dedent(
+                """
+                hello
+
+                cc @person1 @person2 @person4"""
+            ),
+        },
+        check="Terminating since 1234 is a draft",
+    )
+
+
 if __name__ == "__main__":
     sys.exit(pytest.main([__file__] + sys.argv[1:]))

tests/scripts/git_utils.py

@@ -20,7 +20,7 @@
 import subprocess
 import re
 from urllib import request
-from typing import Dict, Tuple, Any
+from typing import Dict, Tuple, Any, Optional, List
 
 
 class GitHubRepo:
@@ -35,8 +35,16 @@ def headers(self):
             "Authorization": f"Bearer {self.token}",
         }
 
-    def graphql(self, query: str) -> Dict[str, Any]:
-        return self._post("https://api.github.com/graphql", {"query": query})
+    def graphql(self, query: str, variables: Optional[Dict[str, str]] = None) -> Dict[str, Any]:
+        if variables is None:
+            variables = {}
+        response = self._post(
+            "https://api.github.com/graphql", {"query": query, "variables": variables}
+        )
+        if "data" not in response:
+            msg = f"Error fetching data with query:\n{query}\n\nvariables:\n{variables}\n\nerror:\n{json.dumps(response, indent=2)}"
+            raise RuntimeError(msg)
+        return response
 
     def _post(self, full_url: str, body: Dict[str, Any]) -> Dict[str, Any]:
         print("Requesting POST to", full_url, "with", body)
@@ -95,3 +103,18 @@ def git(command, **kwargs):
     if proc.returncode != 0:
         raise RuntimeError(f"Command failed {command}:\nstdout:\n{proc.stdout}")
     return proc.stdout.strip()
+
+
+def find_ccs(body: str) -> List[str]:
+    matches = re.findall(r"(cc( @[-A-Za-z0-9]+)+)", body, flags=re.MULTILINE)
+    matches = [full for full, last in matches]
+
+    reviewers = []
+    for match in matches:
+        if match.startswith("cc "):
+            match = match.replace("cc ", "")
+        users = [x.strip() for x in match.split("@")]
+        reviewers += users
+
+    reviewers = set(x for x in reviewers if x != "")
+    return list(reviewers)