// Copyright 2019 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.cloud.tasks.v2;

import "google/api/annotations.proto";
import "google/api/resource.proto";
import "google/cloud/tasks/v2/target.proto";
import "google/protobuf/duration.proto";
import "google/protobuf/timestamp.proto";
import "google/rpc/status.proto";

option go_package = "google.golang.org/genproto/googleapis/cloud/tasks/v2;tasks";
option java_multiple_files = true;
option java_outer_classname = "TaskProto";
option java_package = "com.google.cloud.tasks.v2";


// A unit of scheduled work.
message Task {
  // The view specifies a subset of [Task][google.cloud.tasks.v2.Task] data.
  //
  // When a task is returned in a response, not all
  // information is retrieved by default because some data, such as
  // payloads, might be desirable to return only when needed because
  // of its large size or because of the sensitivity of data that it
  // contains.
  enum View {
    // Unspecified. Defaults to BASIC.
    VIEW_UNSPECIFIED = 0;

    // The basic view omits fields which can be large or can contain
    // sensitive data.
    //
    // This view does not include the
    // [body in AppEngineHttpRequest][google.cloud.tasks.v2.AppEngineHttpRequest.body].
    // Bodies are desirable to return only when needed, because they
    // can be large and because of the sensitivity of the data that you
    // choose to store in it.
    BASIC = 1;

    // All information is returned.
    //
    // Authorization for [FULL][google.cloud.tasks.v2.Task.View.FULL] requires
    // `cloudtasks.tasks.fullView` [Google IAM](https://cloud.google.com/iam/)
    // permission on the [Queue][google.cloud.tasks.v2.Queue] resource.
    FULL = 2;
  }

  // Optionally caller-specified in [CreateTask][google.cloud.tasks.v2.CloudTasks.CreateTask].
  //
  // The task name.
  //
  // The task name must have the following format:
  // `projects/PROJECT_ID/locations/LOCATION_ID/queues/QUEUE_ID/tasks/TASK_ID`
  //
  // * `PROJECT_ID` can contain letters ([A-Za-z]), numbers ([0-9]),
  //    hyphens (-), colons (:), or periods (.).
  //    For more information, see
  //    [Identifying
  //    projects](https://cloud.google.com/resource-manager/docs/creating-managing-projects#identifying_projects)
  // * `LOCATION_ID` is the canonical ID for the task's location.
  //    The list of available locations can be obtained by calling
  //    [ListLocations][google.cloud.location.Locations.ListLocations].
  //    For more information, see https://cloud.google.com/about/locations/.
  // * `QUEUE_ID` can contain letters ([A-Za-z]), numbers ([0-9]), or
  //   hyphens (-). The maximum length is 100 characters.
  // * `TASK_ID` can contain only letters ([A-Za-z]), numbers ([0-9]),
  //   hyphens (-), or underscores (_). The maximum length is 500 characters.
  string name = 1;

  // Required. The message to send to the worker.
  oneof message_type {
    // HTTP request that is sent to the App Engine app handler.
    //
    // An App Engine task is a task that has [AppEngineHttpRequest][google.cloud.tasks.v2.AppEngineHttpRequest] set.
    AppEngineHttpRequest app_engine_http_request = 2;
  }

  // The time when the task is scheduled to be attempted.
  //
  // For App Engine queues, this is when the task will be attempted or retried.
  //
  // `schedule_time` will be truncated to the nearest microsecond.
  google.protobuf.Timestamp schedule_time = 4;

  // Output only. The time that the task was created.
  //
  // `create_time` will be truncated to the nearest second.
  google.protobuf.Timestamp create_time = 5;

  // The deadline for requests sent to the worker. If the worker does not
  // respond by this deadline then the request is cancelled and the attempt
  // is marked as a `DEADLINE_EXCEEDED` failure. Cloud Tasks will retry the
  // task according to the [RetryConfig][google.cloud.tasks.v2.RetryConfig].
  //
  // Note that when the request is cancelled, Cloud Tasks will stop listing for
  // the response, but whether the worker stops processing depends on the
  // worker. For example, if the worker is stuck, it may not react to cancelled
  // requests.
  //
  // The default and maximum values depend on the type of request:
  //
  //
  // * For [App Engine tasks][google.cloud.tasks.v2.AppEngineHttpRequest], 0 indicates that the
  //   request has the default deadline. The default deadline depends on the
  //   [scaling
  //   type](https://cloud.google.com/appengine/docs/standard/go/how-instances-are-managed#instance_scaling)
  //   of the service: 10 minutes for standard apps with automatic scaling, 24
  //   hours for standard apps with manual and basic scaling, and 60 minutes for
  //   flex apps. If the request deadline is set, it must be in the interval [15
  //   seconds, 24 hours 15 seconds]. Regardless of the task's
  //   `dispatch_deadline`, the app handler will not run for longer than than
  //   the service's timeout. We recommend setting the `dispatch_deadline` to
  //   at most a few seconds more than the app handler's timeout. For more
  //   information see
  //   [Timeouts](https://cloud.google.com/tasks/docs/creating-appengine-handlers#timeouts).
  //
  // `dispatch_deadline` will be truncated to the nearest millisecond. The
  // deadline is an approximate deadline.
  google.protobuf.Duration dispatch_deadline = 6;

  // Output only. The number of attempts dispatched.
  //
  // This count includes attempts which have been dispatched but haven't
  // received a response.
  int32 dispatch_count = 7;

  // Output only. The number of attempts which have received a response.
  int32 response_count = 8;

  // Output only. The status of the task's first attempt.
  //
  // Only [dispatch_time][google.cloud.tasks.v2.Attempt.dispatch_time] will be set.
  // The other [Attempt][google.cloud.tasks.v2.Attempt] information is not retained by Cloud Tasks.
  Attempt first_attempt = 9;

  // Output only. The status of the task's last attempt.
  Attempt last_attempt = 10;

  // Output only. The view specifies which subset of the [Task][google.cloud.tasks.v2.Task] has
  // been returned.
  View view = 11;
}

// The status of a task attempt.
message Attempt {
  // Output only. The time that this attempt was scheduled.
  //
  // `schedule_time` will be truncated to the nearest microsecond.
  google.protobuf.Timestamp schedule_time = 1;

  // Output only. The time that this attempt was dispatched.
  //
  // `dispatch_time` will be truncated to the nearest microsecond.
  google.protobuf.Timestamp dispatch_time = 2;

  // Output only. The time that this attempt response was received.
  //
  // `response_time` will be truncated to the nearest microsecond.
  google.protobuf.Timestamp response_time = 3;

  // Output only. The response from the worker for this attempt.
  //
  // If `response_time` is unset, then the task has not been attempted or is
  // currently running and the `response_status` field is meaningless.
  google.rpc.Status response_status = 4;
}
