restreamer, thrimshim: Allow /metrics/* in addition to /metrics

This allows the metrics proxying from nginx to work even if the path is not rewritten,
which is hard to do in k8s.

restreamer/restreamer/main.py

@@ -86,6 +86,13 @@ def metrics():
 	"""Return current metrics in prometheus metrics format"""
 	return prom.generate_latest()
 
+# To make nginx proxying simpler, we want to allow /metrics/* to work
+@app.route('/metrics/<trailing>')
+@request_stats
+def metrics_with_trailing(trailing):
+       """Expose Prometheus metrics."""
+       return prometheus_client.generate_latest()
+
 @app.route('/files')
 @request_stats
 def list_channels():

thrimshim/thrimshim/main.py

@@ -90,6 +90,13 @@ def authenticate(f):
 def test(editor=None):
 	return json.dumps(editor)
 
+# To make nginx proxying simpler, we want to allow /metrics/* to work
+@app.route('/metrics/<trailing>')
+@request_stats
+def metrics_with_trailing(trailing):
+	"""Expose Prometheus metrics."""
+	return prometheus_client.generate_latest()
+
 @app.route('/metrics')
 @request_stats
 def metrics():