fedimint_api_client::api

Struct GlobalFederationApiWithCache

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pub struct GlobalFederationApiWithCache<T> {
    inner: T,
    await_session_lru: Arc<Mutex<LruCache<u64, Arc<OnceCell<SessionOutcome>>>>>,
    get_session_status_lru: Arc<Mutex<LruCache<u64, Arc<OnceCell<SessionOutcome>>>>>,
}
Expand description

IGlobalFederationApi wrapping some T: IRawFederationApi and adding a tiny bit of caching.

Use GlobalFederationApiWithCacheExt::with_cache to create.

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§inner: T§await_session_lru: Arc<Mutex<LruCache<u64, Arc<OnceCell<SessionOutcome>>>>>

Small LRU used as IGlobalFederationApi::await_block cache.

This is mostly to avoid multiple client module recovery processes re-requesting same blocks and putting burden on the federation.

The LRU can be be fairly small, as if the modules are (near-)bottlenecked on fetching blocks they will naturally synchronize, or split into a handful of groups. And if they are not, no LRU here is going to help them.

§get_session_status_lru: Arc<Mutex<LruCache<u64, Arc<OnceCell<SessionOutcome>>>>>

Like Self::await_session_lru, but for IGlobalFederationApi::get_session_status.

In theory these two LRUs have the same content, but one is locked by potentially long-blocking operation, while the other non-blocking one. Given how tiny they are, it’s not worth complicating things to unify them.

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Trait Implementations§

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impl<T: Debug> Debug for GlobalFederationApiWithCache<T>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<T> IGlobalFederationApi for GlobalFederationApiWithCache<T>
where T: IRawFederationApi + MaybeSend + MaybeSync + 'static,

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fn submit_transaction<'life0, 'async_trait>( &'life0 self, tx: Transaction, ) -> Pin<Box<dyn Future<Output = FederationResult<SerdeModuleEncoding<TransactionSubmissionOutcome>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Submit a transaction for inclusion

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fn await_block<'life0, 'life1, 'async_trait>( &'life0 self, session_idx: u64, decoders: &'life1 ModuleDecoderRegistry, ) -> Pin<Box<dyn Future<Output = Result<SessionOutcome>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

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fn get_session_status<'life0, 'life1, 'async_trait>( &'life0 self, session_idx: u64, decoders: &'life1 ModuleDecoderRegistry, ) -> Pin<Box<dyn Future<Output = Result<SessionStatus>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

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fn session_count<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = FederationResult<u64>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn await_transaction<'life0, 'async_trait>( &'life0 self, txid: TransactionId, ) -> Pin<Box<dyn Future<Output = FederationResult<TransactionId>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn server_config_consensus_hash<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = FederationResult<Hash>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Fetches the server consensus hash if enough peers agree on it
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fn upload_backup<'life0, 'life1, 'async_trait>( &'life0 self, request: &'life1 SignedBackupRequest, ) -> Pin<Box<dyn Future<Output = FederationResult<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

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fn download_backup<'life0, 'life1, 'async_trait>( &'life0 self, id: &'life1 PublicKey, ) -> Pin<Box<dyn Future<Output = FederationResult<BTreeMap<PeerId, Option<ClientBackupSnapshot>>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

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fn set_password<'life0, 'async_trait>( &'life0 self, auth: ApiAuth, ) -> Pin<Box<dyn Future<Output = FederationResult<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Sets the password used to decrypt the configs and authenticate Read more
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fn set_config_gen_connections<'life0, 'async_trait>( &'life0 self, info: ConfigGenConnectionsRequest, auth: ApiAuth, ) -> Pin<Box<dyn Future<Output = FederationResult<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

During config gen, sets the server connection containing our endpoints Read more
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fn add_config_gen_peer<'life0, 'async_trait>( &'life0 self, peer: PeerServerParams, ) -> Pin<Box<dyn Future<Output = FederationResult<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

During config gen, used for an API-to-API call that adds a peer’s server connection info to the leader. Read more
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fn get_config_gen_peers<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = FederationResult<Vec<PeerServerParams>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

During config gen, gets all the server connections we’ve received from peers using add_config_gen_peer Read more
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fn get_default_config_gen_params<'life0, 'async_trait>( &'life0 self, auth: ApiAuth, ) -> Pin<Box<dyn Future<Output = FederationResult<ConfigGenParamsRequest>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Gets the default config gen params which can be configured by the leader, gives them a template to modify
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fn set_config_gen_params<'life0, 'async_trait>( &'life0 self, requested: ConfigGenParamsRequest, auth: ApiAuth, ) -> Pin<Box<dyn Future<Output = FederationResult<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Leader sets the consensus params, everyone sets the local params Read more
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fn consensus_config_gen_params<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = FederationResult<ConfigGenParamsResponse>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Returns the consensus config gen params, followers will delegate this call to the leader. Once this endpoint returns successfully we can run DKG.
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fn run_dkg<'life0, 'async_trait>( &'life0 self, auth: ApiAuth, ) -> Pin<Box<dyn Future<Output = FederationResult<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Runs DKG, can only be called once after configs have been generated in get_consensus_config_gen_params. If DKG fails this returns a 500 error and config gen must be restarted.
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fn get_verify_config_hash<'life0, 'async_trait>( &'life0 self, auth: ApiAuth, ) -> Pin<Box<dyn Future<Output = FederationResult<BTreeMap<PeerId, Hash>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

After DKG, returns the hash of the consensus config tweaked with our id. We need to share this with all other peers to complete verification.
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fn verified_configs<'life0, 'async_trait>( &'life0 self, auth: ApiAuth, ) -> Pin<Box<dyn Future<Output = FederationResult<BTreeMap<PeerId, Hash>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Updates local state and notify leader that we have verified configs. This allows for a synchronization point, before we start consensus.
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fn start_consensus<'life0, 'async_trait>( &'life0 self, auth: ApiAuth, ) -> Pin<Box<dyn Future<Output = FederationResult<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Reads the configs from the disk, starts the consensus server, and shuts down the config gen API to start the Fedimint API Read more
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fn status<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = FederationResult<StatusResponse>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Returns the status of the server
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fn audit<'life0, 'async_trait>( &'life0 self, auth: ApiAuth, ) -> Pin<Box<dyn Future<Output = FederationResult<AuditSummary>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Show an audit across all modules
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fn guardian_config_backup<'life0, 'async_trait>( &'life0 self, auth: ApiAuth, ) -> Pin<Box<dyn Future<Output = FederationResult<GuardianConfigBackup>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Download the guardian config to back it up
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fn auth<'life0, 'async_trait>( &'life0 self, auth: ApiAuth, ) -> Pin<Box<dyn Future<Output = FederationResult<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Check auth credentials
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fn restart_federation_setup<'life0, 'async_trait>( &'life0 self, auth: ApiAuth, ) -> Pin<Box<dyn Future<Output = FederationResult<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn submit_api_announcement<'life0, 'async_trait>( &'life0 self, announcement_peer_id: PeerId, announcement: SignedApiAnnouncement, ) -> Pin<Box<dyn Future<Output = FederationResult<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Publish our signed API announcement to other guardians
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fn api_announcements<'life0, 'async_trait>( &'life0 self, guardian: PeerId, ) -> Pin<Box<dyn Future<Output = PeerResult<BTreeMap<PeerId, SignedApiAnnouncement>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn sign_api_announcement<'life0, 'async_trait>( &'life0 self, api_url: SafeUrl, auth: ApiAuth, ) -> Pin<Box<dyn Future<Output = FederationResult<SignedApiAnnouncement>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn shutdown<'life0, 'async_trait>( &'life0 self, session: Option<u64>, auth: ApiAuth, ) -> Pin<Box<dyn Future<Output = FederationResult<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn fedimintd_version<'life0, 'async_trait>( &'life0 self, peer_id: PeerId, ) -> Pin<Box<dyn Future<Output = PeerResult<String>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Returns the fedimintd version a peer is running
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impl<T> IRawFederationApi for GlobalFederationApiWithCache<T>
where T: IRawFederationApi + MaybeSend + MaybeSync + 'static,

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fn request_raw<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, peer_id: PeerId, method: &'life1 str, params: &'life2 [Value], ) -> Pin<Box<dyn Future<Output = Result<Value, JsonRpcClientError>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Make request to a specific federation peer by peer_id

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fn all_peers(&self) -> &BTreeSet<PeerId>

List of all federation peers for the purpose of iterating each peer in the federation. Read more
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fn self_peer(&self) -> Option<PeerId>

PeerId of the Guardian node, if set Read more
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fn with_module(&self, id: ModuleInstanceId) -> DynModuleApi

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where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

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impl<T> FederationApiExt for T
where T: IRawFederationApi + ?Sized,

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fn request_single_peer<'life0, 'async_trait>( &'life0 self, timeout: Option<Duration>, method: String, params: ApiRequestErased, peer_id: PeerId, ) -> Pin<Box<dyn Future<Output = JsonRpcResult<JsonValue>> + Send + 'async_trait>>
where Self: Sync + 'async_trait, 'life0: 'async_trait,

Make a request to a single peer in the federation with an optional timeout.
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fn request_single_peer_typed<'life0, 'async_trait, Ret>( &'life0 self, timeout: Option<Duration>, method: String, params: ApiRequestErased, peer_id: PeerId, ) -> Pin<Box<dyn Future<Output = PeerResult<Ret>> + Send + 'async_trait>>
where Ret: DeserializeOwned + 'async_trait, Self: Sync + 'async_trait, 'life0: 'async_trait,

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fn request_single_peer_federation<'life0, 'async_trait, FedRet>( &'life0 self, timeout: Option<Duration>, method: String, params: ApiRequestErased, peer_id: PeerId, ) -> Pin<Box<dyn Future<Output = FederationResult<FedRet>> + Send + 'async_trait>>
where FedRet: DeserializeOwned + Eq + Debug + Clone + MaybeSend + 'async_trait, Self: Sync + 'async_trait, 'life0: 'async_trait,

Like Self::request_single_peer, but API more like Self::request_with_strategy.
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fn request_with_strategy<'life0, 'async_trait, PeerRet, FedRet>( &'life0 self, strategy: impl 'async_trait + QueryStrategy<PeerRet, FedRet> + MaybeSend, method: String, params: ApiRequestErased, ) -> Pin<Box<dyn Future<Output = FederationResult<FedRet>> + Send + 'async_trait>>
where PeerRet: 'async_trait + DeserializeOwned, FedRet: 'async_trait + Debug, Self: Sync + 'async_trait, 'life0: 'async_trait,

Make an aggregate request to federation, using strategy to logically merge the responses.
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fn request_current_consensus<'life0, 'async_trait, Ret>( &'life0 self, method: String, params: ApiRequestErased, ) -> Pin<Box<dyn Future<Output = FederationResult<Ret>> + Send + 'async_trait>>
where Ret: DeserializeOwned + Eq + Debug + Clone + MaybeSend + 'async_trait, Self: Sync + 'async_trait, 'life0: 'async_trait,

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fn request_admin<'life0, 'life1, 'async_trait, Ret>( &'life0 self, method: &'life1 str, params: ApiRequestErased, auth: ApiAuth, ) -> Pin<Box<dyn Future<Output = FederationResult<Ret>> + Send + 'async_trait>>
where Ret: DeserializeOwned + Eq + Debug + Clone + MaybeSend + 'async_trait, Self: Sync + 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

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fn request_admin_no_auth<'life0, 'life1, 'async_trait, Ret>( &'life0 self, method: &'life1 str, params: ApiRequestErased, ) -> Pin<Box<dyn Future<Output = FederationResult<Ret>> + Send + 'async_trait>>
where Ret: DeserializeOwned + Eq + Debug + Clone + MaybeSend + 'async_trait, Self: Sync + 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

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impl<T> GlobalFederationApiWithCacheExt for T
where T: IRawFederationApi + MaybeSend + MaybeSync + 'static,

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fn with_cache(self) -> GlobalFederationApiWithCache<T>

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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> MaybeSend for T
where T: Send,

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impl<T> MaybeSend for T
where T: Send,

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impl<T> MaybeSendSync for T

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impl<T> MaybeSync for T
where T: Sync,