fedimint_mint_server

Struct Mint

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pub struct Mint {
    pub(crate) cfg: MintConfig,
    pub(crate) sec_key: Tiered<SecretKeyShare>,
    pub(crate) pub_key: HashMap<Amount, AggregatePublicKey>,
}
Expand description

Federated mint member mint

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§cfg: MintConfig§sec_key: Tiered<SecretKeyShare>§pub_key: HashMap<Amount, AggregatePublicKey>

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impl Mint

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pub(crate) async fn handle_backup_request( &self, dbtx: &mut DatabaseTransaction<'_>, request: SignedBackupRequest, ) -> Result<(), ApiError>

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pub(crate) async fn handle_recover_request( &self, dbtx: &mut DatabaseTransaction<'_>, id: PublicKey, ) -> Option<ECashUserBackupSnapshot>

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impl Mint

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pub fn new(cfg: MintConfig) -> Mint

Constructs a new mint

§Panics
  • If there are no amount tiers
  • If the amount tiers for secret and public keys are inconsistent
  • If the pub key belonging to the secret key share is not in the pub key list.
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pub fn pub_key(&self) -> HashMap<Amount, AggregatePublicKey>

Trait Implementations§

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impl Debug for Mint

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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 ServerModule for Mint

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type Common = MintModuleTypes

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type Init = MintInit

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fn consensus_proposal<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, _dbtx: &'life1 mut DatabaseTransaction<'life2>, ) -> Pin<Box<dyn Future<Output = Vec<MintConsensusItem>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

This module’s contribution to the next consensus proposal. This method is only guaranteed to be called once every few seconds. Consensus items are not meant to be latency critical; do not create them as a response to a processed transaction. Only use consensus items to establish consensus on a value that is required to verify transactions, like unix time, block heights and feerates, and model all other state changes trough transactions. The intention for this method is to always return all available consensus items even if they are redundant while process_consensus_item returns an error for the redundant proposals. Read more
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fn process_consensus_item<'a, 'b, 'life0, 'async_trait>( &'a self, _dbtx: &'life0 mut DatabaseTransaction<'b>, _consensus_item: MintConsensusItem, _peer_id: PeerId, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'a: 'async_trait, 'b: 'async_trait, 'life0: 'async_trait,

This function is called once for every consensus item. The function should return Ok if and only if the consensus item changes the system state. Therefore this method should return an error in case of merely redundant consensus items such that they will be purged from the history of the federation. This enables consensus_proposal to return all available consensus item without wasting disk space with redundant consensus items.
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fn verify_input(&self, input: &MintInput) -> Result<(), MintInputError>

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fn process_input<'a, 'b, 'c, 'life0, 'async_trait>( &'a self, dbtx: &'life0 mut DatabaseTransaction<'c>, input: &'b MintInput, ) -> Pin<Box<dyn Future<Output = Result<InputMeta, MintInputError>> + Send + 'async_trait>>
where Self: 'async_trait, 'a: 'async_trait, 'b: 'async_trait, 'c: 'async_trait, 'life0: 'async_trait,

Try to spend a transaction input. On success all necessary updates will be part of the database transaction. On failure (e.g. double spend) the database transaction is rolled back and the operation will take no effect.
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fn process_output<'a, 'b, 'life0, 'async_trait>( &'a self, dbtx: &'life0 mut DatabaseTransaction<'b>, output: &'a MintOutput, out_point: OutPoint, ) -> Pin<Box<dyn Future<Output = Result<TransactionItemAmount, MintOutputError>> + Send + 'async_trait>>
where Self: 'async_trait, 'a: 'async_trait, 'b: 'async_trait, 'life0: 'async_trait,

Try to create an output (e.g. issue notes, peg-out BTC, …). On success all necessary updates to the database will be part of the database transaction. On failure (e.g. double spend) the database transaction is rolled back and the operation will take no effect. Read more
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fn output_status<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, dbtx: &'life1 mut DatabaseTransaction<'life2>, out_point: OutPoint, ) -> Pin<Box<dyn Future<Output = Option<MintOutputOutcome>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Retrieve the current status of the output. Depending on the module this might contain data needed by the client to access funds or give an estimate of when funds will be available. Returns None if the output is unknown, NOT if it is just not ready yet.
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fn audit<'life0, 'life1, 'life2, 'life3, 'async_trait>( &'life0 self, dbtx: &'life1 mut DatabaseTransaction<'life2>, audit: &'life3 mut Audit, module_instance_id: ModuleInstanceId, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait,

Queries the database and returns all assets and liabilities of the module. Read more
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fn api_endpoints(&self) -> Vec<ApiEndpoint<Self>>

Returns a list of custom API endpoints defined by the module. These are made available both to users as well as to other modules. They thus should be deterministic, only dependant on their input and the current epoch.
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fn module_kind() -> ModuleKind

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fn decoder() -> Decoder

Returns a decoder for the following associated types of this module: Read more

Auto Trait Implementations§

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impl Freeze for Mint

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impl RefUnwindSafe for Mint

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impl Send for Mint

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impl Sync for Mint

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impl Unpin for Mint

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impl UnwindSafe for Mint

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fn consensus_proposal<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, dbtx: &'life1 mut DatabaseTransaction<'life2>, module_instance_id: u16, ) -> Pin<Box<dyn Future<Output = Vec<DynModuleConsensusItem>> + Send + 'async_trait>>
where 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, T: 'async_trait,

This module’s contribution to the next consensus proposal

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fn process_consensus_item<'a, 'b, 'life0, 'life1, 'async_trait>( &'life0 self, dbtx: &'life1 mut DatabaseTransaction<'a>, consensus_item: &'b DynModuleConsensusItem, peer_id: PeerId, ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>
where 'a: 'async_trait, 'b: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, T: 'async_trait,

This function is called once for every consensus item. The function returns an error if any only if the consensus item does not change our state and therefore may be safely discarded by the atomic broadcast.

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fn process_input<'a, 'b, 'c, 'life0, 'async_trait>( &'a self, dbtx: &'life0 mut DatabaseTransaction<'c>, input: &'b DynInput, ) -> Pin<Box<dyn Future<Output = Result<InputMeta, DynInputError>> + Send + 'async_trait>>
where 'a: 'async_trait, 'b: 'async_trait, 'c: 'async_trait, 'life0: 'async_trait, T: 'async_trait,

Try to spend a transaction input. On success all necessary updates will be part of the database transaction. On failure (e.g. double spend) the database transaction is rolled back and the operation will take no effect.

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fn process_output<'a, 'life0, 'life1, 'life2, 'async_trait>( &'life0 self, dbtx: &'life1 mut DatabaseTransaction<'a>, output: &'life2 DynOutput, out_point: OutPoint, ) -> Pin<Box<dyn Future<Output = Result<TransactionItemAmount, DynOutputError>> + Send + 'async_trait>>
where 'a: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, T: 'async_trait,

Try to create an output (e.g. issue notes, peg-out BTC, …). On success all necessary updates to the database will be part of the database transaction. On failure (e.g. double spend) the database transaction is rolled back and the operation will take no effect.

The supplied out_point identifies the operation (e.g. a peg-out or note issuance) and can be used to retrieve its outcome later using output_status.

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fn output_status<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, dbtx: &'life1 mut DatabaseTransaction<'life2>, out_point: OutPoint, module_instance_id: u16, ) -> Pin<Box<dyn Future<Output = Option<DynOutputOutcome>> + Send + 'async_trait>>
where 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, T: 'async_trait,

Retrieve the current status of the output. Depending on the module this might contain data needed by the client to access funds or give an estimate of when funds will be available. Returns None if the output is unknown, NOT if it is just not ready yet.

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fn audit<'life0, 'life1, 'life2, 'life3, 'async_trait>( &'life0 self, dbtx: &'life1 mut DatabaseTransaction<'life2>, audit: &'life3 mut Audit, module_instance_id: u16, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>
where 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait, T: 'async_trait,

Queries the database and returns all assets and liabilities of the module.

Summing over all modules, if liabilities > assets then an error has occurred in the database and consensus should halt.

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fn decoder(&self) -> Decoder

Returns the decoder belonging to the server module
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fn verify_input(&self, input: &DynInput) -> Result<(), DynInputError>

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fn api_endpoints(&self) -> Vec<ApiEndpoint<DynServerModule>>

Returns a list of custom API endpoints defined by the module. These are made available both to users as well as to other modules. They thus should be deterministic, only dependant on their input and the current epoch.
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