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// Copyright 2017 Google Inc.
//
// 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.rpc;

import "google/protobuf/any.proto";

option java_multiple_files = true;
option java_outer_classname = "StatusProto";
option java_package = "com.google.rpc";
option objc_class_prefix = "RPC";

// The `Status` type defines a logical error model that is suitable for
// different programming environments, including REST APIs and RPC APIs. It is
// used by [gRPC](https://github.com/grpc). The error model is designed to be:
//
// - Simple to use and understand for most users
// - Flexible enough to meet unexpected needs
//
// # Overview
//
// The `Status` message contains three pieces of data: error code, error
// message, and error details. The error code should be an enum value of
// [google.rpc.Code][google.rpc.Code], but it may accept additional error codes
// if needed.  The error message should be a developer-facing English message
// that helps developers *understand* and *resolve* the error. If a localized
// user-facing error message is needed, put the localized message in the error
// details or localize it in the client. The optional error details may contain
// arbitrary information about the error. There is a predefined set of error
// detail types in the package `google.rpc` that can be used for common error
// conditions.
//
// # Language mapping
//
// The `Status` message is the logical representation of the error model, but it
// is not necessarily the actual wire format. When the `Status` message is
// exposed in different client libraries and different wire protocols, it can be
// mapped differently. For example, it will likely be mapped to some exceptions
// in Java, but more likely mapped to some error codes in C.
//
// # Other uses
//
// The error model and the `Status` message can be used in a variety of
// environments, either with or without APIs, to provide a
// consistent developer experience across different environments.
//
// Example uses of this error model include:
//
// - Partial errors. If a service needs to return partial errors to the client,
//     it may embed the `Status` in the normal response to indicate the partial
//     errors.
//
// - Workflow errors. A typical workflow has multiple steps. Each step may
//     have a `Status` message for error reporting.
//
// - Batch operations. If a client uses batch request and batch response, the
//     `Status` message should be used directly inside batch response, one for
//     each error sub-response.
//
// - Asynchronous operations. If an API call embeds asynchronous operation
//     results in its response, the status of those operations should be
//     represented directly using the `Status` message.
//
// - Logging. If some API errors are stored in logs, the message `Status` could
//     be used directly after any stripping needed for security/privacy reasons.
message Status {
    // The status code, which should be an enum value of
    // [google.rpc.Code][google.rpc.Code].
    int32 code = 1;

    // A developer-facing error message, which should be in English. Any
    // user-facing error message should be localized and sent in the
    // [google.rpc.Status.details][google.rpc.Status.details] field, or localized
    // by the client.
    string message = 2;

    // A list of messages that carry the error details.  There is a common set of
    // message types for APIs to use.
    repeated google.protobuf.Any details = 3;
}