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node, node-template: disable GRANDPA observer (#5011)

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* node-template: disable grandpa observer

* node: disable grandpa observer

* node: add doc about grandpa-voter infallible task

* grandpa: remove grandpa observer from public API

* grandpa: ignore observer_enabled field in config
This commit is contained in:
André Silva
2020-02-21 09:50:42 +00:00
committed by GitHub
parent ab1351c5d9
commit f0043055cc
5 changed files with 72 additions and 72 deletions
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substrate/bin/node-template/node/src/service.rs
+30 -33
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@@ -145,44 +145,41 @@ pub fn new_full(config: Configuration<GenesisConfig>)
gossip_duration: Duration::from_millis(333),
justification_period: 512,
name: Some(name),
observer_enabled: true,
observer_enabled: false,
keystore,
is_authority,
};
match (is_authority, disable_grandpa) {
(false, false) => {
// start the lightweight GRANDPA observer
service.spawn_task("grandpa-observer", grandpa::run_grandpa_observer(
grandpa_config,
grandpa_link,
service.network(),
service.on_exit(),
)?);
},
(true, false) => {
// start the full GRANDPA voter
let voter_config = grandpa::GrandpaParams {
config: grandpa_config,
link: grandpa_link,
network: service.network(),
inherent_data_providers: inherent_data_providers.clone(),
on_exit: service.on_exit(),
telemetry_on_connect: Some(service.telemetry_on_connect_stream()),
voting_rule: grandpa::VotingRulesBuilder::default().build(),
};
let enable_grandpa = !disable_grandpa;
if enable_grandpa {
// start the full GRANDPA voter
// NOTE: non-authorities could run the GRANDPA observer protocol, but at
// this point the full voter should provide better guarantees of block
// and vote data availability than the observer. The observer has not
// been tested extensively yet and having most nodes in a network run it
// could lead to finality stalls.
let grandpa_config = grandpa::GrandpaParams {
config: grandpa_config,
link: grandpa_link,
network: service.network(),
inherent_data_providers: inherent_data_providers.clone(),
on_exit: service.on_exit(),
telemetry_on_connect: Some(service.telemetry_on_connect_stream()),
voting_rule: grandpa::VotingRulesBuilder::default().build(),
};
// the GRANDPA voter task is considered infallible, i.e.
// if it fails we take down the service with it.
service.spawn_essential_task("grandpa", grandpa::run_grandpa_voter(voter_config)?);
},
(_, true) => {
grandpa::setup_disabled_grandpa(
service.client(),
&inherent_data_providers,
service.network(),
)?;
},
// the GRANDPA voter task is considered infallible, i.e.
// if it fails we take down the service with it.
service.spawn_essential_task(
"grandpa-voter",
grandpa::run_grandpa_voter(grandpa_config)?
);
} else {
grandpa::setup_disabled_grandpa(
service.client(),
&inherent_data_providers,
service.network(),
)?;
}
Ok(service)