Stats logging

[pwojcikdev]

This allows logging individual stat counter increments. This is useful for debugging tests. This functionality can be enabled by setting NANO_LOG_STATS=[1,true,on] environment variable.

Example output:

[2024-05-02 18:43:27.939] [node_16gzg] [stats] [debug] Stat: bootstrap_server::request::in += 1
[2024-05-02 18:43:27.939] [node_16gzg] [stats] [debug] Stat: bootstrap_server_request::blocks::in += 1
[2024-05-02 18:43:27.939] [node_3e5x4] [stats] [debug] Stat: traffic_tcp::all::out += 51
[2024-05-02 18:43:27.939] [node_3e5x4] [stats] [debug] Stat: bootstrap_ascending::track::in += 1
[2024-05-02 18:43:27.939] [node_3e5x4] [stats] [debug] Sample: bootstrap_tag_duration -> 1