Write metadata for your contract.
The contractmeta! macro provided in the Rust SDK allows users to write two strings - a key and a val - within a serialized SCMetaEntry::SCMetaV0 XDR object to the custom section of Wasm contracts. The section name for this metadata is contractmetav0. Developers can utilize this macro to write metadata, and tools can then read and display this information to users.
The liquidity pool example provides a clear demonstration of how to use the contractmeta! macro:
// Metadata that is added on to the Wasm custom section
contractmeta!(
key = "Description",
val = "Constant product AMM with a .3% swap fee"
);
pub trait LiquidityPoolTrait {...
Guides in this category:
📄️ Organize contract errors with an error enum type
A convenient way to manage and meaningfully communicate contract errors is to collect them into an enum struct. These errors are a special type of enum integer type that are stored on ledger as Status values containing a u32 code. First, create the Error struct in your smart contract.
📄️ Upgrade the Wasm bytecode of a deployed contract
Upgrade the Wasm bytecode of a deployed contract
📄️ Write metadata for your contract.
Write structured metadata.