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c9834ee8ee
In #3400, a discussion started on what the correct log level would be for the production relay. Currently, the relay logs some stats about each packet on debug, i.e. where it came from, where it is going to and how big it is. This isn't very useful in production though and will fill up our log disk quickly. This PR introduces a stats timer like we already have it in other components. We print the number of allocations, how many channels we have and how much data we relayed over all these channels since we last printed. The interval is currently set to 10 seconds. Here is what this output could look like (captured locally using `relay/run_smoke_test.sh`, although slightly tweaked, printing ever 2s, using release mode and larger packets on the clients): ``` 2024-01-26T05:01:02.445555Z INFO relay: Seeding RNG from '0' 2024-01-26T05:01:02.445580Z WARN relay: No portal token supplied, starting standalone mode 2024-01-26T05:01:02.445827Z INFO relay: Listening for incoming traffic on UDP port 3478 2024-01-26T05:01:02.447035Z INFO Eventloop::poll: relay: num_allocations=0 num_channels=0 throughput=0.00 B/s 2024-01-26T05:01:02.649194Z INFO Eventloop::poll:handle_client_input{sender=127.0.0.1:39092 transaction_id="8f20177512495fcb563c60de" allocation=AID-1}: relay: Created new allocation first_relay_address=127.0.0.1 lifetime=600s 2024-01-26T05:01:02.650744Z INFO Eventloop::poll:handle_client_input{sender=127.0.0.1:39092 transaction_id="6445943a353d5e8c262a821f" allocation=AID-1 peer=127.0.0.1:41094 channel=16384}: relay: Successfully bound channel 2024-01-26T05:01:04.446317Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=631.54 MB/s 2024-01-26T05:01:06.446319Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=698.73 MB/s 2024-01-26T05:01:08.446325Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=708.98 MB/s 2024-01-26T05:01:10.446324Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=690.79 MB/s 2024-01-26T05:01:12.446316Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=715.53 MB/s 2024-01-26T05:01:14.446315Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=706.90 MB/s 2024-01-26T05:01:16.446313Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=712.03 MB/s 2024-01-26T05:01:18.446319Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=717.54 MB/s 2024-01-26T05:01:20.446316Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=690.74 MB/s 2024-01-26T05:01:22.446313Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=705.08 MB/s 2024-01-26T05:01:24.446311Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=700.41 MB/s 2024-01-26T05:01:26.446319Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=717.57 MB/s 2024-01-26T05:01:28.446320Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=688.82 MB/s 2024-01-26T05:01:30.446329Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=696.35 MB/s 2024-01-26T05:01:32.446317Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=724.03 MB/s 2024-01-26T05:01:34.446320Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=713.46 MB/s 2024-01-26T05:01:36.446314Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=716.13 MB/s 2024-01-26T05:01:38.446327Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=687.16 MB/s 2024-01-26T05:01:40.446315Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=708.20 MB/s 2024-01-26T05:01:42.446314Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=689.36 MB/s 2024-01-26T05:01:44.446314Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=698.62 MB/s 2024-01-26T05:01:46.446315Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=696.21 MB/s 2024-01-26T05:01:48.446378Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=696.36 MB/s 2024-01-26T05:01:50.446314Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=709.47 MB/s 2024-01-26T05:01:52.446319Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=714.48 MB/s 2024-01-26T05:01:54.446323Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=690.71 MB/s 2024-01-26T05:01:56.446313Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=692.70 MB/s 2024-01-26T05:01:58.446321Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=687.87 MB/s 2024-01-26T05:02:00.446316Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=682.11 MB/s 2024-01-26T05:02:02.446312Z INFO Eventloop::poll: relay: num_allocations=1 num_channels=1 throughput=700.07 MB/s ```