// Copyright 2021 Google LLC
//
// 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 google.example.showcase.v1;

import "google/api/annotations.proto";
import "google/api/client.proto";
import "google/api/field_behavior.proto";
import "google/api/resource.proto";
import "google/protobuf/duration.proto";
import "google/protobuf/empty.proto";
import "google/protobuf/timestamp.proto";
import "google/rpc/status.proto";

option go_package = "github.com/googleapis/gapic-showcase/server/genproto";
option java_multiple_files = true;
option java_outer_classname = "SequenceProto";
option java_package = "com.google.example.showcase.v1";
option ruby_package = "Google::Showcase::V1";

service SequenceService {
  option (google.api.default_host) = "showcase.googleapis.com";

  // Creates a sequence.
  rpc CreateSequence(CreateSequenceRequest) returns (Sequence) {
    option (google.api.http) = {
      post: "/v1/sequences"
      body: "sequence"
    };
    option (google.api.method_signature) = "sequence";
  }

  // Retrieves a sequence.
  rpc GetSequenceReport(GetSequenceReportRequest) returns (SequenceReport) {
    option (google.api.http) = {
      get: "/v1/{name=sequences/*/sequenceReport}"
    };
    option (google.api.method_signature) = "name";
  }

  // Attempts a sequence.
  rpc AttemptSequence(AttemptSequenceRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = {
      post: "/v1/{name=sequences/*}"
      body: "*"
    };
    option (google.api.method_signature) = "name";
  }
}

message Sequence {
  option (google.api.resource) = {
    type: "showcase.googleapis.com/Sequence"
    pattern: "sequences/{sequence}"
  };

  // A server response to an RPC Attempt in a sequence.
  message Response {
    // The status to return for an individual attempt.
    google.rpc.Status status = 1;

    // The amount of time to delay sending the response.
    google.protobuf.Duration delay = 2;
  }

  string name = 1 [(google.api.field_behavior) = OUTPUT_ONLY];

  // Sequence of responses to return in order for each attempt. If empty, the
  // default response is an immediate OK.
  repeated Response responses = 2;
}

message SequenceReport {
  option (google.api.resource) = {
    type: "showcase.googleapis.com/SequenceReport"
    pattern: "sequences/{sequence}/sequenceReport"
  };

  // Contains metrics on individual RPC Attempts in a sequence.
  message Attempt {
    // The attempt number - starting at 0.
    int32 attempt_number = 1;

    // The deadline dictated by the attempt to the server.
    google.protobuf.Timestamp attempt_deadline = 2;

    // The time that the server responded to the RPC attempt. Used for
    // calculating attempt_delay.
    google.protobuf.Timestamp response_time = 3;

    // The server perceived delay between sending the last response and
    // receiving this attempt. Used for validating attempt delay backoff.
    google.protobuf.Duration attempt_delay = 4;

    // The status returned to the attempt.
    google.rpc.Status status = 5;
  }

  string name = 1 [(google.api.field_behavior) = OUTPUT_ONLY];

  // The set of RPC attempts received by the server for a Sequence.
  repeated Attempt attempts = 2;
}

message CreateSequenceRequest {
  Sequence sequence = 1;
}

message AttemptSequenceRequest {
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "showcase.googleapis.com/Sequence"
    }
  ];
}

message GetSequenceReportRequest {
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "showcase.googleapis.com/SequenceReport"
    }
  ];
}