Struct smoldot_light::AddChainConfig

pub struct AddChainConfig<'a, TChain, TRelays> {
    pub user_data: TChain,
    pub specification: &'a str,
    pub database_content: &'a str,
    pub potential_relay_chains: TRelays,
    pub json_rpc: AddChainConfigJsonRpc,
}

See Client::add_chain.

Fields

user_data: TChain

Opaque user data that the Client will hold for this chain. Can later be accessed using the Index and IndexMut trait implementations on the Client.

specification: &'a str

JSON text containing the specification of the chain (the so-called “chain spec”).

database_content: &'a str

Opaque data containing the database content that was retrieved by calling the chainHead_unstable_finalizedDatabase JSON-RPC function in the past.

Pass an empty string if no database content exists or is known.

No error is generated if this data is invalid and/or can’t be decoded. The implementation reserves the right to break the format of this data at any point.

potential_relay_chains: TRelays

If AddChainConfig defines a parachain, contains the list of relay chains to choose from. Ignored if not a parachain.

This field is necessary because multiple different chain can have the same identity. If the client tried to find the corresponding relay chain in all the previously-spawned chains, it means that a call to Client::add_chain could influence the outcome of a subsequent call to Client::add_chain.

For example: if user A adds a chain named “Kusama”, then user B adds a different chain also named “Kusama”, then user B adds a parachain whose relay chain is “Kusama”, it would be wrong to connect to the “Kusama” created by user A.

json_rpc: AddChainConfigJsonRpc

Configuration for the JSON-RPC endpoint.

Trait Implementations

impl<'a, TChain: Clone, TRelays: Clone> Clone for AddChainConfig<'a, TChain, TRelays>

fn clone(&self) -> AddChainConfig<'a, TChain, TRelays>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a, TChain: Debug, TRelays: Debug> Debug for AddChainConfig<'a, TChain, TRelays>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.