// Copyright 2025 Envoy Project Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
//     http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

syntax = "proto3";

package envoy.config.core.v3;

import "google/protobuf/duration.proto";

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

option java_package = "io.envoyproxy.envoy.config.core.v3";
option java_outer_classname = "BackoffProto";
option java_multiple_files = true;
option go_package = "github.com/envoyproxy/go-control-plane/envoy/config/core/v3;corev3";
option (udpa.annotations.file_status).package_version_status = ACTIVE;

// [#protodoc-title: Backoff strategy]

// Configuration defining a jittered exponential back off strategy.
message BackoffStrategy {
  option (udpa.annotations.versioning).previous_message_type = "envoy.api.v2.core.BackoffStrategy";

  // The base interval to be used for the next back off computation. It should
  // be greater than zero and less than or equal to :ref:`max_interval
  // <envoy_v3_api_field_config.core.v3.BackoffStrategy.max_interval>`.
  google.protobuf.Duration base_interval = 1 [(validate.rules).duration = {
    required: true
    gte {nanos: 1000000}
  }];

  // Specifies the maximum interval between retries. This parameter is optional,
  // but must be greater than or equal to the :ref:`base_interval
  // <envoy_v3_api_field_config.core.v3.BackoffStrategy.base_interval>` if set. The default
  // is 10 times the :ref:`base_interval
  // <envoy_v3_api_field_config.core.v3.BackoffStrategy.base_interval>`.
  google.protobuf.Duration max_interval = 2 [(validate.rules).duration = {gt {}}];
}
