Struct exonum::blockchain::ServiceContext

pub struct ServiceContext { /* fields omitted */ }

The current node state on which the blockchain is running, or in other words execution context.

Methods

impl ServiceContext

fn new(
    service_public_key: PublicKey,
    service_secret_key: SecretKey,
    api_sender: ApiSender,
    fork: Fork
) -> ServiceContext

Creates the service context for the given node.

This method is necessary if you want to implement an alternative exonum node. For example, you can implement special node without consensus for regression testing of services business logic.

fn validator_id(&self) -> Option<ValidatorId>

If the current node is validator returns its identifier. For other nodes return None.

fn snapshot(&self) -> &Snapshot

Returns the current database snapshot.

fn height(&self) -> Height

Returns the current blockchain height. This height is "height of the last committed block".

fn validators(&self) -> &[ValidatorKeys]

Returns the current list of validators.

fn public_key(&self) -> &PublicKey

Returns current node's public key.

fn secret_key(&self) -> &SecretKey

Returns current node's secret key.

fn actual_consensus_config(&self) -> &ConsensusConfig

Returns the actual consensus configuration.

fn actual_service_config(&self, service: &Service) -> &Value

Returns service specific global variables as json value.

fn transaction_sender(&self) -> &TransactionSend

Returns reference to the transaction sender.

fn stored_configuration(&self) -> &StoredConfiguration

Returns the actual blockchain global configuration.

Trait Implementations

impl Debug for ServiceContext

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.