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rpc: Implement
chainSpec RPC API (#12261)
* rpc/chain_spec: Add traits for `chainSpec` API Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * rpc/chain_spec: Implement `chainSpec` RPC methods Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * rpc/chain_spec: Add tests Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * bin/node: Enable `chainSpec` API Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * rpc/chain_spec: Assume `genesis_hash` as non-empty Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * Update client/rpc-spec/Cargo.toml Co-authored-by: Niklas Adolfsson <niklasadolfsson1@gmail.com> * Update client/rpc-spec/src/lib.rs Co-authored-by: Niklas Adolfsson <niklasadolfsson1@gmail.com> * client/rpc_spec: Rename crate to `rpc_spec_v2` Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * rpc-servers: Remove the `version` field from `rpc_methods` Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * rpc/chain_spec: Fix copyright years Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> Co-authored-by: Niklas Adolfsson <niklasadolfsson1@gmail.com>
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| [package] | ||
| name = "sc-rpc-spec-v2" | ||
| version = "0.10.0-dev" | ||
| authors = ["Parity Technologies <admin@parity.io>"] | ||
| edition = "2021" | ||
| license = "GPL-3.0-or-later WITH Classpath-exception-2.0" | ||
| homepage = "https://substrate.io" | ||
| repository = "https://github.com/paritytech/substrate/" | ||
| description = "Substrate RPC interface v2." | ||
| readme = "README.md" | ||
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| [package.metadata.docs.rs] | ||
| targets = ["x86_64-unknown-linux-gnu"] | ||
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| [dependencies] | ||
| jsonrpsee = { version = "0.15.1", features = ["server", "macros"] } | ||
| # Internal chain structures for "chain_spec". | ||
| sc-chain-spec = { version = "4.0.0-dev", path = "../chain-spec" } | ||
| hex = "0.4" | ||
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| [dev-dependencies] | ||
| serde_json = "1.0" | ||
| tokio = { version = "1.17.0", features = ["macros"] } |
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| Substrate RPC interfaces. | ||
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| A collection of RPC methods and subscriptions supported by all substrate clients. | ||
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| License: GPL-3.0-or-later WITH Classpath-exception-2.0 |
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| // This file is part of Substrate. | ||
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| // Copyright (C) 2022 Parity Technologies (UK) Ltd. | ||
| // SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0 | ||
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| // This program is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
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| // This program is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU General Public License for more details. | ||
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| // You should have received a copy of the GNU General Public License | ||
| // along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
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| //! API trait of the chain spec. | ||
| use jsonrpsee::{core::RpcResult, proc_macros::rpc}; | ||
| use sc_chain_spec::Properties; | ||
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| #[rpc(client, server)] | ||
| pub trait ChainSpecApi { | ||
| /// Get the chain name, as present in the chain specification. | ||
| /// | ||
| /// # Unstable | ||
| /// | ||
| /// This method is unstable and subject to change in the future. | ||
| #[method(name = "chainSpec_unstable_chainName")] | ||
| fn chain_spec_unstable_chain_name(&self) -> RpcResult<String>; | ||
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| /// Get the chain's genesis hash. | ||
| /// | ||
| /// # Unstable | ||
| /// | ||
| /// This method is unstable and subject to change in the future. | ||
| #[method(name = "chainSpec_unstable_genesisHash")] | ||
| fn chain_spec_unstable_genesis_hash(&self) -> RpcResult<String>; | ||
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| /// Get the properties of the chain, as present in the chain specification. | ||
| /// | ||
| /// # Note | ||
| /// | ||
| /// The json whitespaces are not guaranteed to persist. | ||
| /// | ||
| /// # Unstable | ||
| /// | ||
| /// This method is unstable and subject to change in the future. | ||
| #[method(name = "chainSpec_unstable_properties")] | ||
| fn chain_spec_unstable_properties(&self) -> RpcResult<Properties>; | ||
| } |
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| // This file is part of Substrate. | ||
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| // Copyright (C) 2022 Parity Technologies (UK) Ltd. | ||
| // SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0 | ||
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| // This program is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
|
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| // This program is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU General Public License for more details. | ||
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| // You should have received a copy of the GNU General Public License | ||
| // along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
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| //! API implementation for the specification of a chain. | ||
| use crate::chain_spec::api::ChainSpecApiServer; | ||
| use jsonrpsee::core::RpcResult; | ||
| use sc_chain_spec::Properties; | ||
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| /// An API for chain spec RPC calls. | ||
| pub struct ChainSpec { | ||
| /// The name of the chain. | ||
| name: String, | ||
| /// The hexadecimal encoded hash of the genesis block. | ||
| genesis_hash: String, | ||
| /// Chain properties. | ||
| properties: Properties, | ||
| } | ||
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| impl ChainSpec { | ||
| /// Creates a new [`ChainSpec`]. | ||
| pub fn new<Hash: AsRef<[u8]>>( | ||
| name: String, | ||
| genesis_hash: Hash, | ||
| properties: Properties, | ||
| ) -> Self { | ||
| let genesis_hash = format!("0x{}", hex::encode(genesis_hash)); | ||
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| Self { name, properties, genesis_hash } | ||
| } | ||
| } | ||
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| impl ChainSpecApiServer for ChainSpec { | ||
| fn chain_spec_unstable_chain_name(&self) -> RpcResult<String> { | ||
| Ok(self.name.clone()) | ||
| } | ||
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| fn chain_spec_unstable_genesis_hash(&self) -> RpcResult<String> { | ||
| Ok(self.genesis_hash.clone()) | ||
| } | ||
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| fn chain_spec_unstable_properties(&self) -> RpcResult<Properties> { | ||
| Ok(self.properties.clone()) | ||
| } | ||
| } |
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| // This file is part of Substrate. | ||
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| // Copyright (C) 2022 Parity Technologies (UK) Ltd. | ||
| // SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0 | ||
|
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| // This program is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
|
|
||
| // This program is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU General Public License for more details. | ||
|
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| // You should have received a copy of the GNU General Public License | ||
| // along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
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| //! Substrate chain specification API. | ||
| //! | ||
| //! The *chain spec* (short for *chain specification*) allows inspecting the content of | ||
| //! the specification of the chain that a JSON-RPC server is targeting. | ||
| //! | ||
| //! The values returned by the API are guaranteed to never change during the lifetime of the | ||
| //! JSON-RPC server. | ||
| //! | ||
| //! # Note | ||
| //! | ||
| //! Methods are prefixed by `chainSpec`. | ||
| #[cfg(test)] | ||
| mod tests; | ||
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| pub mod api; | ||
| pub mod chain_spec; | ||
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| pub use api::ChainSpecApiServer; | ||
| pub use chain_spec::ChainSpec; |
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