apt_swarm::p2p::peerdb

Struct PeerDb

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pub struct PeerDb { /* private fields */ }

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impl PeerDb

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pub fn add_peer(&mut self, addr: PeerAddr) -> (&mut PeerStats, bool)

Register a peer address in the database

Returns true if we haven’t known this address before.

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pub fn add_advertised_peers(&mut self, addrs: &[PeerAddr])

Register a list of peers that has been actively advertised to us

The database should always be written afterwards to last_advertised is persisted properly.

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pub fn peers(&self) -> &BTreeMap<PeerAddr, PeerStats>

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pub fn sample(&self, max_success_age: Option<Duration>) -> Vec<PeerAddr>

Return a sample of random peers to connect to

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pub fn expire_old_peers(&mut self, now: DateTime<Utc>) -> bool

Remove old peers that both:

  • we couldn’t successfully connect/handshake with in a while
  • haven’t been advertised anymore in a while

Peers that are still being advertised, but we couldn’t connect/handshake with in a while are still being kept around so we don’t stop toning down our connection attempts to them.

Returns true if any peers have been removed.

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pub async fn read(config: &Config) -> Result<Self>

Load the local peerdb file from disk.

If this fails, return an empty database so we self-heal.

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pub async fn write(&self) -> Result<()>

Write the peerdb to disk, in a way so we don’t accidentally lose data on an unexpected crash

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