tp_api

Trait CallApiAt

Source 
pub trait CallApiAt<Block: BlockT> {
    type Error: Debug + From<ApiError>;
    type StateBackend: StateBackend<HashFor<Block>>;

    // Required methods
    fn call_api_at<'a, R: Encode + Decode + PartialEq, NC: FnOnce() -> Result<R, String> + UnwindSafe, C: Core<Block, Error = Self::Error>>(
        &self,
        params: CallApiAtParams<'a, Block, C, NC, Self::StateBackend>,
    ) -> Result<NativeOrEncoded<R>, Self::Error>;
    fn runtime_version_at(
        &self,
        at: &BlockId<Block>,
    ) -> Result<RuntimeVersion, Self::Error>;
}
Expand description

Something that can call into the an api at a given block.

Required Associated Types§

Source

type Error: Debug + From<ApiError>

Error type used by the implementation.

Source

type StateBackend: StateBackend<HashFor<Block>>

The state backend that is used to store the block states.

Required Methods§

Source

fn call_api_at<'a, R: Encode + Decode + PartialEq, NC: FnOnce() -> Result<R, String> + UnwindSafe, C: Core<Block, Error = Self::Error>>( &self, params: CallApiAtParams<'a, Block, C, NC, Self::StateBackend>, ) -> Result<NativeOrEncoded<R>, Self::Error>

Calls the given api function with the given encoded arguments at the given block and returns the encoded result.

Source

fn runtime_version_at( &self, at: &BlockId<Block>, ) -> Result<RuntimeVersion, Self::Error>

Returns the runtime version at the given block.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§