Trait Context 

pub trait Context {
    type Runtime: Runtime;

    // Required methods
    fn clone(&self) -> Self;
    fn get_logger(&self, module: &'static str) -> Logger;
    fn host_info(&self) -> &HostInfo;
    fn key_manager(&self) -> Option<&dyn KeyManager>;
    fn runtime_header(&self) -> &Header;
    fn runtime_round_results(&self) -> &RoundResults;
    fn consensus_state(&self) -> &ConsensusState;
    fn history(&self) -> &dyn HistoryHost;
    fn epoch(&self) -> EpochTime;
    fn max_messages(&self) -> u32;

    // Provided methods
    fn should_execute_contracts(&self) -> bool { ... }
    fn is_allowed_query<R: Runtime>(&self, method: &str) -> bool { ... }
    fn local_config<T>(&self, key: &str) -> Option<T>
       where T: Decode { ... }
    fn runtime_id(&self) -> &Namespace { ... }
    fn is_confidential(&self) -> bool { ... }
    fn now(&self) -> u64 { ... }
}

Runtime SDK context.

Required Associated Types

type Runtime: Runtime

Runtime that the context is being invoked in.

Required Methods

fn clone(&self) -> Self

Clone this context.

fn get_logger(&self, module: &'static str) -> Logger

Returns a logger.

fn host_info(&self) -> &HostInfo

Information about the host environment.

fn key_manager(&self) -> Option<&dyn KeyManager>

The key manager, if the runtime is confidential.

fn runtime_header(&self) -> &Header

Last runtime block header.

fn runtime_round_results(&self) -> &RoundResults

Results of executing the last successful runtime round.

fn consensus_state(&self) -> &ConsensusState

Consensus state.

fn history(&self) -> &dyn HistoryHost

Historical state.

fn epoch(&self) -> EpochTime

Current epoch.

fn max_messages(&self) -> u32

Maximum number of consensus messages that the runtime can emit in this block.

Provided Methods

fn should_execute_contracts(&self) -> bool

Whether smart contracts should be executed in this context.

fn is_allowed_query<R: Runtime>(&self, method: &str) -> bool

Whether method is an allowed query per policy in the local config.

fn local_config<T>(&self, key: &str) -> Option<T>

where T: Decode,

Returns node operator-provided local configuration.

This method will always return None in Mode::ExecuteTx contexts.

fn runtime_id(&self) -> &Namespace

Runtime ID.

fn is_confidential(&self) -> bool

Whether the context has a key manager available (e.g. the runtime is confidential).

fn now(&self) -> u64

UNIX timestamp of the current block.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<R: Runtime> Context for RuntimeBatchContext<'_, R>

type Runtime = R