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client/network: Expose number of entries per Kademlia bucket (#7104)

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Extend `sub_libp2p_kbuckets_num_nodes` Prometheus metric to expose the
number of nodes per bucket per Kademlia instance instead of only per
Kademlia instance.
This commit is contained in:
Max Inden
2020-09-15 11:34:22 +02:00
committed by GitHub
parent 9a547cbea6
commit 3d94d80309
4 changed files with 25 additions and 11 deletions
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substrate/client/network/src/discovery.rs
+11 -3
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@@ -329,10 +329,18 @@ impl DiscoveryBehaviour {
}
}
/// Returns the number of nodes that are in the Kademlia k-buckets.
pub fn num_kbuckets_entries(&mut self) -> impl ExactSizeIterator<Item = (&ProtocolId, usize)> {
/// Returns the number of nodes in each Kademlia kbucket for each Kademlia instance.
///
/// Identifies Kademlia instances by their [`ProtocolId`] and kbuckets by the base 2 logarithm
/// of their lower bound.
pub fn num_entries_per_kbucket(&mut self) -> impl ExactSizeIterator<Item = (&ProtocolId, Vec<(u32, usize)>)> {
self.kademlias.iter_mut()
.map(|(id, kad)| (id, kad.kbuckets().map(|bucket| bucket.iter().count()).sum()))
.map(|(id, kad)| {
let buckets = kad.kbuckets()
.map(|bucket| (bucket.range().0.ilog2().unwrap_or(0), bucket.iter().count()))
.collect();
(id, buckets)
})
}
/// Returns the number of records in the Kademlia record stores.