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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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8
protocols/identify/src/protocol.rs
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@ -34,6 +34,10 @@ use void::Void;
const MAX_MESSAGE_SIZE_BYTES: usize = 4096;
pub const PROTOCOL_NAME: &[u8; 14] = b"/ipfs/id/1.0.0";
pub const PUSH_PROTOCOL_NAME: &[u8; 19] = b"/ipfs/id/push/1.0.0";
/// Substream upgrade protocol for `/ipfs/id/1.0.0`.
#[derive(Debug, Clone)]
pub struct IdentifyProtocol;
@ -104,7 +108,7 @@ impl UpgradeInfo for IdentifyProtocol {
type InfoIter = iter::Once<Self::Info>;
fn protocol_info(&self) -> Self::InfoIter {
iter::once(b"/ipfs/id/1.0.0")
iter::once(PROTOCOL_NAME)
}
}
@ -136,7 +140,7 @@ impl<T> UpgradeInfo for IdentifyPushProtocol<T> {
type InfoIter = iter::Once<Self::Info>;
fn protocol_info(&self) -> Self::InfoIter {
iter::once(b"/ipfs/id/push/1.0.0")
iter::once(PUSH_PROTOCOL_NAME)
}
}