syntax = "proto3";

package envoy.service.discovery.v3;

import "envoy/service/discovery/v3/discovery.proto";

// [#protodoc-title: Aggregated Discovery Service (ADS)]

// Discovery services for endpoints, clusters, routes,
// and listeners are retained in the package `envoy.api.v2` for backwards
// compatibility with existing management servers. New development in discovery
// services should proceed in the package `envoy.service.discovery.v2`.

// See https://github.com/envoyproxy/envoy-api#apis for a description of the
// role of ADS and how it is intended to be used by a management server. ADS
// requests have the same structure as their singleton xDS counterparts, but can
// multiplex many resource types on a single stream. The type_url in the
// DiscoveryRequest/DiscoveryResponse provides sufficient information to recover
// the multiplexed singleton APIs at the Envoy instance and management server.
service AggregatedDiscoveryService {
  // This is a gRPC-only API.
  rpc StreamAggregatedResources(stream DiscoveryRequest)
      returns (stream DiscoveryResponse) {}

  rpc DeltaAggregatedResources(stream DeltaDiscoveryRequest)
      returns (stream DeltaDiscoveryResponse) {}
}

// [#not-implemented-hide:] Not configuration. Workaround c++ protobuf issue
// with importing services: https://github.com/google/protobuf/issues/4221
message AdsDummy {}