Trait polkadot_service::CallExecutor

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pub trait CallExecutor<B>: RuntimeVersionOf
where B: Block,
{ type Error: Error; type Backend: Backend<B>; // Required methods fn execution_extensions(&self) -> &ExecutionExtensions<B>; fn call( &self, at_hash: <B as Block>::Hash, method: &str, call_data: &[u8], context: CallContext, ) -> Result<Vec<u8>, Error>; fn contextual_call( &self, at_hash: <B as Block>::Hash, method: &str, call_data: &[u8], changes: &RefCell<OverlayedChanges<<<B as Block>::Header as Header>::Hashing>>, proof_recorder: &Option<Recorder<<<B as Block>::Header as Header>::Hashing>>, call_context: CallContext, extensions: &RefCell<Extensions>, ) -> Result<Vec<u8>, Error>; fn runtime_version( &self, at_hash: <B as Block>::Hash, ) -> Result<RuntimeVersion, Error>; fn prove_execution( &self, at_hash: <B as Block>::Hash, method: &str, call_data: &[u8], ) -> Result<(Vec<u8>, StorageProof), Error>; }
Expand description

Method call executor.

Required Associated Types§

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type Error: Error

Externalities error type.

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type Backend: Backend<B>

The backend used by the node.

Required Methods§

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fn execution_extensions(&self) -> &ExecutionExtensions<B>

Returns the ExecutionExtensions.

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fn call( &self, at_hash: <B as Block>::Hash, method: &str, call_data: &[u8], context: CallContext, ) -> Result<Vec<u8>, Error>

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

No changes are made.

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fn contextual_call( &self, at_hash: <B as Block>::Hash, method: &str, call_data: &[u8], changes: &RefCell<OverlayedChanges<<<B as Block>::Header as Header>::Hashing>>, proof_recorder: &Option<Recorder<<<B as Block>::Header as Header>::Hashing>>, call_context: CallContext, extensions: &RefCell<Extensions>, ) -> Result<Vec<u8>, Error>

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.

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fn runtime_version( &self, at_hash: <B as Block>::Hash, ) -> Result<RuntimeVersion, Error>

Extract RuntimeVersion of given block

No changes are made.

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fn prove_execution( &self, at_hash: <B as Block>::Hash, method: &str, call_data: &[u8], ) -> Result<(Vec<u8>, StorageProof), Error>

Prove the execution of the given method.

No changes are made.

Implementations on Foreign Types§

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impl<B, E, Block> CallExecutor<Block> for LocalCallExecutor<Block, B, E>
where B: Backend<Block>, E: CodeExecutor + RuntimeVersionOf + Clone + 'static, Block: Block,

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type Error = <E as CodeExecutor>::Error

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type Backend = B

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fn execution_extensions(&self) -> &ExecutionExtensions<Block>

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fn call( &self, at_hash: <Block as Block>::Hash, method: &str, call_data: &[u8], context: CallContext, ) -> Result<Vec<u8>, Error>

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fn contextual_call( &self, at_hash: <Block as Block>::Hash, method: &str, call_data: &[u8], changes: &RefCell<OverlayedChanges<<<Block as Block>::Header as Header>::Hashing>>, recorder: &Option<Recorder<<<Block as Block>::Header as Header>::Hashing>>, call_context: CallContext, extensions: &RefCell<Extensions>, ) -> Result<Vec<u8>, Error>

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fn runtime_version( &self, at_hash: <Block as Block>::Hash, ) -> Result<RuntimeVersion, Error>

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fn prove_execution( &self, at_hash: <Block as Block>::Hash, method: &str, call_data: &[u8], ) -> Result<(Vec<u8>, StorageProof), Error>

Implementors§