Trait sc_client_api::call_executor::CallExecutor

pub trait CallExecutor<B: BlockT> {
    type Error: Error;
    type Backend: Backend<B>;
    fn call(
        &self, 
        id: &BlockId<B>, 
        method: &str, 
        call_data: &[u8], 
        strategy: ExecutionStrategy, 
        extensions: Option<Extensions>
    ) -> Result<Vec<u8>, Error>;
    fn contextual_call<'a, IB: Fn() -> Result<()>, EM: Fn(Result<NativeOrEncoded<R>, Self::Error>, Result<NativeOrEncoded<R>, Self::Error>) -> Result<NativeOrEncoded<R>, Self::Error>, R: Encode + Decode + PartialEq, NC: FnOnce() -> Result<R, String> + UnwindSafe>(
        &self, 
        initialize_block_fn: IB, 
        at: &BlockId<B>, 
        method: &str, 
        call_data: &[u8], 
        changes: &RefCell<OverlayedChanges>, 
        offchain_changes: &RefCell<OffchainOverlayedChanges>, 
        storage_transaction_cache: Option<&RefCell<StorageTransactionCache<B, <Self::Backend as Backend<B>>::State>>>, 
        initialize_block: InitializeBlock<'a, B>, 
        execution_manager: ExecutionManager<EM>, 
        native_call: Option<NC>, 
        proof_recorder: &Option<ProofRecorder<B>>, 
        extensions: Option<Extensions>
    ) -> Result<NativeOrEncoded<R>>
    where
        ExecutionManager<EM>: Clone;
    fn runtime_version(&self, id: &BlockId<B>) -> Result<RuntimeVersion, Error>;
    fn prove_at_trie_state<S: TrieBackendStorage<HashFor<B>>>(
        &self, 
        trie_state: &TrieBackend<S, HashFor<B>>, 
        overlay: &mut OverlayedChanges, 
        method: &str, 
        call_data: &[u8]
    ) -> Result<(Vec<u8>, StorageProof), Error>;
    fn native_runtime_version(&self) -> Option<&NativeVersion>;

    fn prove_at_state<S: Backend<HashFor<B>>>(
        &self, 
        state: S, 
        overlay: &mut OverlayedChanges, 
        method: &str, 
        call_data: &[u8]
    ) -> Result<(Vec<u8>, StorageProof), Error> { ... }
}

Method call executor.

Associated Types

type Error: Error

Externalities error type.

type Backend: Backend<B>

The backend used by the node.

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Required methods

fn call(
    &self,
    id: &BlockId<B>,
    method: &str,
    call_data: &[u8],
    strategy: ExecutionStrategy,
    extensions: Option<Extensions>
) -> Result<Vec<u8>, Error>

Execute a call to a contract on top of state in a block of given hash.

No changes are made.

fn contextual_call<'a, IB: Fn() -> Result<()>, EM: Fn(Result<NativeOrEncoded<R>, Self::Error>, Result<NativeOrEncoded<R>, Self::Error>) -> Result<NativeOrEncoded<R>, Self::Error>, R: Encode + Decode + PartialEq, NC: FnOnce() -> Result<R, String> + UnwindSafe>(
    &self,
    initialize_block_fn: IB,
    at: &BlockId<B>,
    method: &str,
    call_data: &[u8],
    changes: &RefCell<OverlayedChanges>,
    offchain_changes: &RefCell<OffchainOverlayedChanges>,
    storage_transaction_cache: Option<&RefCell<StorageTransactionCache<B, <Self::Backend as Backend<B>>::State>>>,
    initialize_block: InitializeBlock<'a, B>,
    execution_manager: ExecutionManager<EM>,
    native_call: Option<NC>,
    proof_recorder: &Option<ProofRecorder<B>>,
    extensions: Option<Extensions>
) -> Result<NativeOrEncoded<R>> where
    ExecutionManager<EM>: Clone, 

Execute a contextual call on top of state in a block of a given hash.

No changes are made. Before executing the method, passed header is installed as the current header of the execution context.

fn runtime_version(&self, id: &BlockId<B>) -> Result<RuntimeVersion, Error>

Extract RuntimeVersion of given block

No changes are made.

fn prove_at_trie_state<S: TrieBackendStorage<HashFor<B>>>(
    &self,
    trie_state: &TrieBackend<S, HashFor<B>>,
    overlay: &mut OverlayedChanges,
    method: &str,
    call_data: &[u8]
) -> Result<(Vec<u8>, StorageProof), Error>

Execute a call to a contract on top of given trie state, gathering execution proof.

No changes are made.

fn native_runtime_version(&self) -> Option<&NativeVersion>

Get runtime version if supported.

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Provided methods

fn prove_at_state<S: Backend<HashFor<B>>>(
    &self,
    state: S,
    overlay: &mut OverlayedChanges,
    method: &str,
    call_data: &[u8]
) -> Result<(Vec<u8>, StorageProof), Error>

Execute a call to a contract on top of given state, gathering execution proof.

No changes are made.

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Implementors

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