Crate gekko_metadata

Utilities to parse and process substrate metadata. Can also be enabled in gekko with the "metadata" feature.

Example

use gekko_metadata::*;

// Parse runtime metadata
let content = std::fs::read_to_string("metadata_kusama_9080.hex").unwrap();
let data = parse_hex_metadata(content).unwrap().into_inner();

// Get information about the extrinsic.
let extr = data
    .find_module_extrinsic("Balances", "transfer_keep_alive")
    .unwrap();

assert_eq!(extr.module_id, 4);
assert_eq!(extr.dispatch_id, 3);
assert_eq!(
    extr.args,
    vec![
        ("dest", "<T::Lookup as StaticLookup>::Source"),
        ("value", "Compact<T::Balance>"),
    ]
);

Modules

version

Available versions of Substrates metadata format.

Structs

ExtrinsicInfo

Parameters and other information about an individual extrinsic.

JsonRpcResponse

Helper type when dealing with the Json RPC response returned by Substrates state_getMetadata.

Enums

Error

Errors that can occur when parsing Substrate metadata.

MetadataVersion

Identifier of all the available Substrate metadata versions.

Traits

ModuleMetadataExt

An interface to retrieve information about extrinsics on any Substrate metadata version.

Functions

parse_hex_metadata

Convenience function for parsing the metadata from a HEX representation, as returned by state_getMetadata.

parse_jsonrpc_metadata

Convenience function for parsing the Json RPC response returned by Substrates state_getMetadata.

parse_raw_metadata

Parse the raw Substrate metadata.