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handle_join_request

nodedb_cluster::bootstrap::handle_join

Function handle_join_request 

Source 
pub fn handle_join_request(
    req: &JoinRequest,
    topology: &mut ClusterTopology,
    routing: &RoutingTable,
    cluster_id: u64,
) -> JoinResponse
Expand description

Build a JoinResponse for an incoming JoinRequest.

See module docs for semantics. Mutates topology only when the node is newly admitted; idempotent for re-joins with the same address.

cluster_id is the id of the cluster this node belongs to — the join flow reads it from the local catalog and threads it through so the joining node can persist it and take the restart() path on a subsequent boot. Zero is a valid placeholder when the server’s catalog has not yet been populated; rejection responses also carry zero.