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Export all light client specific code (#17)
* add more descriptive errors for invalid mmr update * add more details to errors * minor fix * remove unused errors * refactor and export logic for constructing beefy client state * api clarifications
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| use codec::{Decode, Input}; | ||
| use frame_metadata::RuntimeMetadataPrefixed; | ||
| use jsonrpsee::{ | ||
| async_client::ClientBuilder, | ||
| client_transport::ws::{Uri, WsTransportClientBuilder}, | ||
| core::{client::ClientT, Error}, | ||
| rpc_params, | ||
| }; | ||
| use std::{env, fs, path::Path}; | ||
| use subxt_codegen::DerivesRegistry; | ||
|
|
||
| // We need this build script to rebuild the runtime metadata from a live node | ||
| // Since we have exported functions that depends on the having the latest relay chain metadata | ||
| // Build is disabled by default and only enabled when the env variable PROVER_ENABLED is set to 1 | ||
|
|
||
| async fn fetch_metadata_ws() -> color_eyre::Result<Vec<u8>> { | ||
| let node_var = env::var("NODE_ENDPOINT").unwrap_or("ws://127.0.0.1:9944".to_string()); | ||
| let (sender, receiver) = WsTransportClientBuilder::default() | ||
| .build(node_var.parse::<Uri>().unwrap()) | ||
| .await | ||
| .map_err(|e| Error::Transport(e.into()))?; | ||
|
|
||
| let client = ClientBuilder::default() | ||
| .max_notifs_per_subscription(4096) | ||
| .build_with_tokio(sender, receiver); | ||
|
|
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| let metadata: String = client.request("state_getMetadata", rpc_params![]).await?; | ||
| Ok(hex::decode(metadata.trim_start_matches("0x"))?) | ||
| } | ||
|
|
||
| fn codegen<I: Input>(encoded: &mut I) -> color_eyre::Result<String> { | ||
| let metadata = <RuntimeMetadataPrefixed as Decode>::decode(encoded)?; | ||
| let generator = subxt_codegen::RuntimeGenerator::new(metadata); | ||
| let item_mod = syn::parse_quote!( | ||
| pub mod api {} | ||
| ); | ||
|
|
||
| // add any derives you want here: | ||
| let p = Vec::<String>::new() | ||
| .iter() | ||
| .map(|raw| syn::parse_str(raw)) | ||
| .collect::<Result<Vec<_>, _>>()?; | ||
| let mut derives = DerivesRegistry::default(); | ||
| derives.extend_for_all(p.into_iter()); | ||
|
|
||
| let runtime_api = generator.generate_runtime(item_mod, derives); | ||
| Ok(format!("{}", runtime_api)) | ||
| } | ||
|
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||
| #[tokio::main] | ||
| async fn main() -> color_eyre::Result<()> { | ||
| let build_enabled = env::var("PROVER_ENABLED") | ||
| .map(|v| v == "1") | ||
| .unwrap_or(false); | ||
| if build_enabled { | ||
| let metadata = fetch_metadata_ws().await?; | ||
| let code = codegen(&mut &metadata[..])?; | ||
| let out_dir = env::var_os("OUT_DIR").unwrap(); | ||
| let dest_path = Path::new(&out_dir).join("subxt_codegen.rs"); | ||
| fs::write(&dest_path, &code)?; | ||
| } | ||
|
|
||
| Ok(()) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,4 @@ | ||
| pub mod helpers; | ||
| pub mod relay_chain_queries; | ||
| pub mod runtime; | ||
| pub mod utils; |
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