feat(metadata): endpoint returns info as JSON

eligibility_server/app.py

@@ -9,6 +9,7 @@
 from flask_restful import Api
 
 from eligibility_server import __version__, db, sentry
+from eligibility_server.db.models import Metadata
 from eligibility_server.keypair import get_server_public_key
 from eligibility_server.settings import Configuration
 from eligibility_server.verify import Verify
@@ -53,6 +54,17 @@ def healthcheck():
     return TextResponse("Healthy")
 
 
+@app.route("/metadata")
+def metadata():
+    app.logger.info("Request metadata")
+
+    md = Metadata.query.first()
+    return {
+        "app": {"version": __version__},
+        "db": {"timestamp": md.timestamp, "users": md.users, "eligibility": md.eligibility},
+    }
+
+
 @app.route("/publickey")
 def publickey():
     app.logger.info("Request public key")

tests/test_app.py

@@ -4,6 +4,7 @@
 
 import re
 
+from eligibility_server import __version__
 from eligibility_server.settings import APP_NAME
 from eligibility_server.keypair import get_server_public_key
 
@@ -20,6 +21,23 @@ def test_healthcheck(client):
     assert "Strict-Transport-Security" in response.headers
 
 
+def test_metadata(client):
+    response = client.get("metadata")
+    assert response.status_code == 200
+    assert response.mimetype == "application/json"
+    assert "Strict-Transport-Security" in response.headers
+
+    data = response.json
+
+    assert "app" in data
+    assert data["app"]["version"] == __version__
+    assert "db" in data
+    assert isinstance(data["db"]["timestamp"], str)
+    assert isinstance(data["db"]["users"], int)
+    assert isinstance(data["db"]["eligibility"], list)
+    assert len(data["db"]["eligibility"]) > 0
+
+
 def test_404(client):
     response = client.get("/random")