Struct exonum_rust_runtime::ExecutionContext

pub struct ExecutionContext<'a> { /* fields omitted */ }

Provides the current state of the blockchain and the caller information for the call which is being executed.

The call can mean a transaction call, before_transactions / after_transactions hook, or the service constructor invocation.

Methods

impl<'a> ExecutionContext<'a>

pub const MAX_CALL_STACK_DEPTH: u64

Maximum depth of the call stack.

pub fn transaction_hash(&self) -> Option<Hash>

Returns the hash of the currently executing transaction, or None for non-transaction root calls (e.g., before_transactions / after_transactions service hooks).

pub fn data(&self) -> BlockchainData<&Fork>

Provides access to blockchain data.

pub fn service_data(&self) -> Prefixed<&Fork>

Provides access to the data of the executing service.

pub fn caller(&self) -> &Caller

Returns the authorization information about this call.

pub fn instance(&self) -> &InstanceDescriptor

Returns a descriptor of the executing service instance.

pub fn in_genesis_block(&self) -> bool

Returns true if currently processed block is a genesis block.

pub fn interface_name(&self) -> &str

Returns an identifier of the service interface required for the call. This identifier is always empty for the primary service interface.

Stability

This getter is a part of an unfinished "interfaces" feature. It is exempt from semantic versioning and will be replaced in the future releases.

Trait Implementations

impl<'a> Debug for ExecutionContext<'a>

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

Formats the value using the given formatter.

impl<'a, I> GenericCallMut<I> for ExecutionContext<'a> where
    I: Into<InstanceQuery<'a>>, 

type Output = Result<(), ExecutionError>

Type of values output by the stub.

fn generic_call_mut(
    &mut self,
    called_instance: I,
    method: MethodDescriptor,
    args: Vec<u8>
) -> Self::Output

Calls a stub method.