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Akka gRPC - Support for building streaming gRPC servers and clients on top of Akka Streams.

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syntax = "proto3";

package envoy.service.discovery.v3;

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

import "udpa/annotations/status.proto";
import "udpa/annotations/versioning.proto";

option java_package = "io.envoyproxy.envoy.service.discovery.v3";
option java_outer_classname = "AdsProto";
option java_multiple_files = true;
option go_package = "github.com/envoyproxy/go-control-plane/envoy/service/discovery/v3;discoveryv3";
option java_generic_services = true;
option (udpa.annotations.file_status).package_version_status = ACTIVE;

// [#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 {
  option (udpa.annotations.versioning).previous_message_type =
      "envoy.service.discovery.v2.AdsDummy";
}