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misc/metrics: Track # connected nodes supporting specific protocol (#2734)

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* misc/metrics: Explicitly delegate event recording to each recorder

This allows delegating a single event to multiple `Recorder`s. That enables e.g. the
`identify::Metrics` `Recorder` to act both on `IdentifyEvent` and `SwarmEvent`. The latter enables
it to garbage collect per peer data on disconnects.

* protocols/dcutr: Expose PROTOCOL_NAME

* protocols/identify: Expose PROTOCOL_NAME and PUSH_PROTOCOL_NAME

* protocols/ping: Expose PROTOCOL_NAME

* protocols/relay: Expose HOP_PROTOCOL_NAME and STOP_PROTOCOL_NAME

* misc/metrics: Track # connected nodes supporting specific protocol

An example metric exposed with this patch:

```
libp2p_identify_protocols{protocol="/ipfs/ping/1.0.0"} 10
```

This implies that 10 of the currently connected nodes support the ping protocol.
This commit is contained in:
Max Inden
2022-07-15 09:16:03 +02:00
committed by GitHub
parent 7c8a97739f
commit d4f8ec2d48
21 changed files with 259 additions and 78 deletions
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3
protocols/relay/src/v2.rs
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@ -34,7 +34,8 @@ pub use protocol::{
inbound_hop::FatalUpgradeError as InboundHopFatalUpgradeError,
inbound_stop::FatalUpgradeError as InboundStopFatalUpgradeError,
outbound_hop::FatalUpgradeError as OutboundHopFatalUpgradeError,
outbound_stop::FatalUpgradeError as OutboundStopFatalUpgradeError,
outbound_stop::FatalUpgradeError as OutboundStopFatalUpgradeError, HOP_PROTOCOL_NAME,
STOP_PROTOCOL_NAME,
};
/// The ID of an outgoing / incoming, relay / destination request.