fedimint_server::consensus::engine

Struct ConsensusEngine

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pub struct ConsensusEngine {
Show 14 fields
    pub modules: ServerModuleRegistry,
    pub db: Database,
    pub federation_api: DynGlobalApi,
    pub cfg: ServerConfig,
    pub submission_receiver: Receiver<ConsensusItem>,
    pub shutdown_receiver: Receiver<Option<u64>>,
    pub last_ci_by_peer: Arc<RwLock<BTreeMap<PeerId, u64>>>,
    pub self_id_str: String,
    pub peer_id_str: Vec<String>,
    pub connection_status_channels: Arc<RwLock<BTreeMap<PeerId, PeerConnectionStatus>>>,
    pub task_group: TaskGroup,
    pub data_dir: PathBuf,
    pub checkpoint_retention: u64,
    pub p2p_bind_addr: SocketAddr,

}
Expand description

Runs the main server consensus loop

Fields§

§modules: ServerModuleRegistry§db: Database§federation_api: DynGlobalApi§cfg: ServerConfig§submission_receiver: Receiver<ConsensusItem>§shutdown_receiver: Receiver<Option<u64>>§last_ci_by_peer: Arc<RwLock<BTreeMap<PeerId, u64>>>§self_id_str: String

Just a string version of cfg.local.identity for performance

§peer_id_str: Vec<String>

Just a string version of peer ids for performance

§connection_status_channels: Arc<RwLock<BTreeMap<PeerId, PeerConnectionStatus>>>§task_group: TaskGroup§data_dir: PathBuf§checkpoint_retention: u64§p2p_bind_addr: SocketAddr

Implementations§

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impl ConsensusEngine

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fn num_peers(&self) -> NumPeers

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fn identity(&self) -> PeerId

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pub async fn run(self) -> Result<()>

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pub async fn run_single_guardian(&self, task_handle: TaskHandle) -> Result<()>

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pub async fn run_consensus( &self, p2p_bind_addr: SocketAddr, task_handle: TaskHandle, ) -> Result<()>

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async fn confirm_server_config_consensus_hash(&self) -> Result<()>

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pub async fn run_session( &self, connections: ReconnectPeerConnections<Message>, session_index: u64, ) -> Result<()>

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pub async fn complete_signed_session_outcome( &self, session_index: u64, ordered_unit_receiver: Receiver<OrderedUnit>, signature_sender: Sender<Option<SchnorrSignature>>, timestamp_receiver: Receiver<(Instant, u64)>, ) -> Result<SignedSessionOutcome>

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fn decoders(&self) -> ModuleDecoderRegistry

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pub async fn pending_accepted_items(&self) -> Vec<AcceptedItem>

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pub async fn complete_session( &self, session_index: u64, signed_session_outcome: SignedSessionOutcome, )

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fn db_checkpoints_dir(&self) -> PathBuf

Returns the full path where the database checkpoints are stored.

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fn initialize_checkpoint_directory(&self, current_session: u64) -> Result<()>

Creates the directory within the data directory for storing the database checkpoints or deletes checkpoints before current_session - checkpoint_retention.

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fn checkpoint_database(&self, session_index: u64)

Creates a backup of the database in the checkpoint directory. These checkpoints can be used to restore the database in case the federation falls out of consensus (recommended for experts only).

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fn delete_old_database_checkpoint( &self, session_index: u64, checkpoint_dir: &Path, ) -> Result<()>

Deletes the database checkpoint directory equal to session_index - checkpoint_retention

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pub async fn process_consensus_item( &self, session_index: u64, item_index: u64, item: ConsensusItem, peer: PeerId, ) -> Result<()>

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async fn process_consensus_item_with_db_transaction( &self, dbtx: &mut DatabaseTransaction<'_>, consensus_item: ConsensusItem, peer_id: PeerId, ) -> Result<()>

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async fn request_signed_session_outcome( &self, federation_api: &DynGlobalApi, index: u64, ) -> SignedSessionOutcome

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async fn get_finished_session_count(&self) -> u64

Returns the number of sessions already saved in the database. This count does not include the currently running session.

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