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Shutdown like a Sir (#1545)

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## Issue Addressed
#1494 

## Proposed Changes
- Give the TaskExecutor the sender side of a channel that a task can clone to request shutting down
- The receiver side of this channel is in environment and now we block until ctrl+c or an internal shutdown signal is received
- The swarm now informs when it has reached 0 listeners
- The network receives this message and requests the shutdown
This commit is contained in:
divma
2020-08-19 05:51:14 +00:00
parent 8e7dd7b2b1
commit fdc6e2aa8e
9 changed files with 102 additions and 18 deletions
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13
beacon_node/eth2_libp2p/src/service.rs
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@@ -36,6 +36,8 @@ pub enum Libp2pEvent<TSpec: EthSpec> {
Behaviour(BehaviourEvent<TSpec>),
/// A new listening address has been established.
NewListenAddr(Multiaddr),
/// We reached zero listening addresses.
ZeroListeners,
}
/// The configuration and state of the libp2p components for the beacon node.
@@ -283,10 +285,17 @@ impl<TSpec: EthSpec> Service<TSpec> {
debug!(self.log, "Listen address expired"; "multiaddr" => multiaddr.to_string())
}
SwarmEvent::ListenerClosed { addresses, reason } => {
crit!(self.log, "Listener closed"; "addresses" => format!("{:?}", addresses), "reason" => format!("{:?}", reason))
crit!(self.log, "Listener closed"; "addresses" => format!("{:?}", addresses), "reason" => format!("{:?}", reason));
if Swarm::listeners(&self.swarm).count() == 0 {
return Libp2pEvent::ZeroListeners;
}
}
SwarmEvent::ListenerError { error } => {
warn!(self.log, "Listener error"; "error" => format!("{:?}", error.to_string()))
// this is non fatal, but we still check
warn!(self.log, "Listener error"; "error" => format!("{:?}", error.to_string()));
if Swarm::listeners(&self.swarm).count() == 0 {
return Libp2pEvent::ZeroListeners;
}
}
SwarmEvent::Dialing(peer_id) => {
debug!(self.log, "Dialing peer"; "peer_id" => peer_id.to_string());