add metrics to every route in queries, search, and trending

[vicky-g]

Trello Card Link

https://trello.com/c/0OifTiUk/1527-api-add-route-metrics-logging-to-each-endpoint

Description

Add metrics logging for every route in queries.py

Services

• Discovery Provider
• Creator Node
• Identity Service
• Libs
• Contracts

Does it touch a critical flow like Discovery indexing, Creator Node track upload, Creator Node gateway, or Creator Node file system?

• ✅ Nope

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide repro instructions & any configuration.
Include log analysis if applicable.

1. setup local services
2. add @record_metrics annotations
3. hit any routes with new annotation
4. check redis keys that each of my disc prov visits is recorded

Note my previous visits to /users, /tracks:

127.0.0.1:6379> HGETALL API_METRICS:routes:172.21.0.1:2020/09/02:23
1) "/v1/tracks/search"
2) "1"
3) "/v1/tracks/trending"
4) "2"
5) "/users"
6) "2"
7) "/tracks"
8) "1"

After refreshing the page at /tracks:

127.0.0.1:6379> HGETALL API_METRICS:routes:172.21.0.1:2020/09/02:23
1) "/v1/tracks/search"
2) "1"
3) "/v1/tracks/trending"
4) "2"
5) "/users"
6) "2"
7) "/tracks"
8) "2"           // this incremented by 1!

[raymondjacobson]

Awesome! Looks good. I think there are a couple more spots in search & trending, but if you follow the same pattern LGTM! thank you :)