automation: herd blocking automations into framework

see #1

app/terraform/block_bridge_github.py

@@ -1,4 +1,5 @@
 import datetime
+from typing import Tuple
 
 from dateutil.parser import isoparse
 from github import Github
@@ -6,26 +7,27 @@ from github import Github
 from app import app
 from app.extensions import db
 from app.models.bridges import Bridge
+from app.terraform import BaseAutomation
 
 
-def check_blocks():
-    g = Github(app.config['GITHUB_API_KEY'])
-    repo = g.get_repo(app.config['GITHUB_BRIDGE_REPO'])
-    for vp in app.config['GITHUB_BRIDGE_VANTAGE_POINTS']:
-        results = repo.get_contents(f"recentResult_{vp}").decoded_content.decode('utf-8').splitlines()
-        for result in results:
-            parts = result.split("\t")
-            if isoparse(parts[2]) < (datetime.datetime.now(datetime.timezone.utc) - datetime.timedelta(days=3)):
-                continue
-            if int(parts[1]) < 40:
-                bridge: Bridge = Bridge.query.filter(
-                    Bridge.hashed_fingerprint == parts[0]
-                ).first()
-                if bridge is not None:
-                    bridge.deprecate(reason="github")
-                    db.session.commit()
+class BlockBridgeGitHubAutomation(BaseAutomation):
+    short_name = "block_bridge_github"
+    description = "Import bridge reachability results from GitHub"
 
-
-if __name__ == "__main__":
-    with app.app_context():
-        check_blocks()
+    def automate(self, full: bool = False) -> Tuple[bool, str]:
+        g = Github(app.config['GITHUB_API_KEY'])
+        repo = g.get_repo(app.config['GITHUB_BRIDGE_REPO'])
+        for vp in app.config['GITHUB_BRIDGE_VANTAGE_POINTS']:
+            results = repo.get_contents(f"recentResult_{vp}").decoded_content.decode('utf-8').splitlines()
+            for result in results:
+                parts = result.split("\t")
+                if isoparse(parts[2]) < (datetime.datetime.now(datetime.timezone.utc) - datetime.timedelta(days=3)):
+                    continue
+                if int(parts[1]) < 40:
+                    bridge: Bridge = Bridge.query.filter(
+                        Bridge.hashed_fingerprint == parts[0]
+                    ).first()
+                    if bridge is not None:
+                        bridge.deprecate(reason="github")
+        db.session.commit()
+        return True, ""