How to track App Engine metrics by endpoint?

I'd like to track metrics for my App Engine app segmented by endpoint:

• views/second by page
• requests/second by endpoint
• response times by endpoint

I've found metrics that look like they'd be helpful, like http/server/response_count and http/server/response_latencies but there doesn't seem to be a way to group them by endpoint. How can I do this?

I found that I could get what I wanted by creating log-based metrics:

The trick is to add a label based on the path (protoPayload.resource):

Now group by path in the metrics explorer: