solutions/node/src/rpc.rs

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2020-08-21 11:20:35 +00:00
//! A collection of node-specific RPC methods.
//! Substrate provides the `sc-rpc` crate, which defines the core RPC layer
//! used by Substrate nodes. This file extends those RPC definitions with
//! capabilities that are specific to this project's runtime configuration.
#![warn(missing_docs)]
use std::sync::Arc;
use node_template_runtime::{opaque::Block, AccountId, Balance, Index};
use sp_api::ProvideRuntimeApi;
use sp_blockchain::{Error as BlockChainError, HeaderMetadata, HeaderBackend};
use sp_block_builder::BlockBuilder;
pub use sc_rpc_api::DenyUnsafe;
use sp_transaction_pool::TransactionPool;
/// Full client dependencies.
pub struct FullDeps<C, P> {
/// The client instance to use.
pub client: Arc<C>,
/// Transaction pool instance.
pub pool: Arc<P>,
/// Whether to deny unsafe calls
pub deny_unsafe: DenyUnsafe,
}
/// Instantiate all full RPC extensions.
pub fn create_full<C, P>(
deps: FullDeps<C, P>,
) -> jsonrpc_core::IoHandler<sc_rpc::Metadata> where
C: ProvideRuntimeApi<Block>,
C: HeaderBackend<Block> + HeaderMetadata<Block, Error=BlockChainError> + 'static,
C: Send + Sync + 'static,
C::Api: substrate_frame_rpc_system::AccountNonceApi<Block, AccountId, Index>,
C::Api: pallet_transaction_payment_rpc::TransactionPaymentRuntimeApi<Block, Balance>,
C::Api: BlockBuilder<Block>,
P: TransactionPool + 'static,
{
use substrate_frame_rpc_system::{FullSystem, SystemApi};
use pallet_transaction_payment_rpc::{TransactionPayment, TransactionPaymentApi};
let mut io = jsonrpc_core::IoHandler::default();
let FullDeps {
client,
pool,
deny_unsafe,
} = deps;
io.extend_with(
SystemApi::to_delegate(FullSystem::new(client.clone(), pool, deny_unsafe))
);
io.extend_with(
TransactionPaymentApi::to_delegate(TransactionPayment::new(client.clone()))
);
// Extend this RPC with a custom API by using the following syntax.
// `YourRpcStruct` should have a reference to a client, which is needed
// to call into the runtime.
// `io.extend_with(YourRpcTrait::to_delegate(YourRpcStruct::new(ReferenceToClient, ...)));`
io
}