Macro serai_coordinator::tributary::db::create_db

macro_rules! create_db {
    ($db_name: ident {
    $($field_name: ident: ($($arg: ident: $arg_type: ty),*) -> $field_type: ty$(,)?)*
  }) => { ... };
}

Creates a series of structs which provide namespacing for keys

Description

Creates a unit struct and a default implementation for the key, get, and set. The macro uses a syntax similar to defining a function. Parameters are concatenated to produce a key, they must be scale encodable. The return type is used to auto encode and decode the database value bytes using borsh.

Arguments

• db_name - A database name
• field_name - An item name
• args - Comma separated list of key arguments
• field_type - The return type

Example

create_db!(
  TributariesDb {
    AttemptsDb: (key_bytes: &[u8], attempt_id: u32) -> u64,
    ExpiredDb: (genesis: [u8; 32]) -> Vec<u8>
  }
)