import interface EventStream;
import interface EventHandler;
type StartPosition = variant id "org.quixos.events:start@1" {
  future id "events:start:future" : unit;
  retained id "events:start:retained" : unit;
  afterCursor id "events:start:after" : string;
};
interface EventSubscription<value Payload,value Parameters> id "interface:org.quixos.events:subscription" revision "interface:org.quixos.events:subscription@1" {
  operation attach id "events:attach" : record {source:interface-ref<EventStream<Payload>>;handler:interface-ref<EventHandler<Payload,Parameters>>;parameters:Parameters;start:StartPosition;} -> unit {
    call id "events:attach:call" execution transaction;
  }
  queryable value status id "events:status" : record {status:string;generation:uint64;cursor:uint64;failure:optional<record {publication:string;code:string;message:string;}>;} {
    get id "events:status:get" execution snapshot;
  }
  operation pause id "events:pause" : unit -> unit {call id "events:pause:call" execution transaction;}
  operation resume id "events:resume" : unit -> unit {call id "events:resume:call" execution transaction;}
  operation retire id "events:retire" : unit -> unit {call id "events:retire:call" execution transaction;}
}