Function prune_servers

mserver/MasterService/src/http.rs:699–711

(
    State(state): State<AppState>,
    headers: HeaderMap,
    Json(request): Json<PruneServersRequest>,
)

    )
)]
async fn observe_server(
    State(state): State<AppState>,
    headers: HeaderMap,
    Path(server_id): Path<String>,
    Json(request): Json<ObserveServerRequest>,
) -> Result<Json<DirectoryServerRecord>, (StatusCode, String)> {
    require_admin_api_key(&state, &headers)?;
    let observed_unix_ms = request.observed_unix_ms.unwrap_or_else(current_time_millis);
    state
        .service
        .observe(&server_id, observed_unix_ms, request.reachable)
        .await
        .map_err(|error| internal_error(&error))?
        .map_or_else(
            || {
                Err((