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

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// THIS FILE IS DEPRECATED
// Users should instead use the corresponding proto in the xds tree.
// No new changes will be accepted here.

syntax = "proto3";

package udpa.annotations;

import "google/protobuf/descriptor.proto";

option go_package = "github.com/cncf/xds/go/annotations";

extend google.protobuf.MessageOptions {
  // Magic number derived from 0x78 ('x') 0x44 ('D') 0x53 ('S')
  VersioningAnnotation versioning = 7881811;
}

message VersioningAnnotation {
  // Track the previous message type. E.g. this message might be
  // udpa.foo.v3alpha.Foo and it was previously udpa.bar.v2.Bar. This
  // information is consumed by UDPA via proto descriptors.
  string previous_message_type = 1;
}