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#region Copyright notice and license

// Copyright 2015, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#endregion

namespace Grpc.Core
{
    /// <summary>
    /// Result of a remote procedure call.
    /// Based on grpc_status_code from grpc/status.h
    /// </summary>
    public enum StatusCode
    {
        /// <summary>Not an error; returned on success.</summary>
        OK = 0,

        /// <summary>The operation was cancelled (typically by the caller).</summary>
        Cancelled = 1,

        /// <summary>
        /// Unknown error.  An example of where this error may be returned is
        /// if a Status value received from another address space belongs to
        /// an error-space that is not known in this address space.  Also
        /// errors raised by APIs that do not return enough error information
        /// may be converted to this error.
        /// </summary>
        Unknown = 2,

        /// <summary>
        /// Client specified an invalid argument.  Note that this differs
        /// from FAILED_PRECONDITION.  INVALID_ARGUMENT indicates arguments
        /// that are problematic regardless of the state of the system
        /// (e.g., a malformed file name).
        /// </summary>
        InvalidArgument = 3,

        /// <summary>
        /// Deadline expired before operation could complete.  For operations
        /// that change the state of the system, this error may be returned
        /// even if the operation has completed successfully.  For example, a
        /// successful response from a server could have been delayed long
        /// enough for the deadline to expire.
        /// </summary>
        DeadlineExceeded = 4,

        /// <summary>Some requested entity (e.g., file or directory) was not found.</summary>
        NotFound = 5,

        /// <summary>Some entity that we attempted to create (e.g., file or directory) already exists.</summary>
        AlreadyExists = 6,

        /// <summary>
        /// The caller does not have permission to execute the specified
        /// operation.  PERMISSION_DENIED must not be used for rejections
        /// caused by exhausting some resource (use RESOURCE_EXHAUSTED
        /// instead for those errors).  PERMISSION_DENIED must not be
        /// used if the caller can not be identified (use UNAUTHENTICATED
        /// instead for those errors).
        /// </summary>
        PermissionDenied = 7,

        /// <summary>The request does not have valid authentication credentials for the operation.</summary>
        Unauthenticated = 16,

        /// <summary>
        /// Some resource has been exhausted, perhaps a per-user quota, or
        /// perhaps the entire file system is out of space.
        /// </summary>
        ResourceExhausted = 8,

        /// <summary>
        /// Operation was rejected because the system is not in a state
        /// required for the operation's execution.  For example, directory
        /// to be deleted may be non-empty, an rmdir operation is applied to
        /// a non-directory, etc.
        /// </summary>
        FailedPrecondition = 9,

        /// <summary>
        /// The operation was aborted, typically due to a concurrency issue
        /// like sequencer check failures, transaction aborts, etc.
        /// </summary>
        Aborted = 10,

        /// <summary>
        /// Operation was attempted past the valid range.  E.g., seeking or
        /// reading past end of file.
        /// </summary>
        OutOfRange = 11,

        /// <summary>Operation is not implemented or not supported/enabled in this service.</summary>
        Unimplemented = 12,

        /// <summary>
        /// Internal errors.  Means some invariants expected by underlying
        /// system has been broken.  If you see one of these errors,
        /// something is very broken.
        /// </summary>
        Internal = 13,

        /// <summary>
        /// The service is currently unavailable.  This is a most likely a
        /// transient condition and may be corrected by retrying with
        /// a backoff.
        /// </summary>
        Unavailable = 14,

        /// <summary>Unrecoverable data loss or corruption.</summary>
        DataLoss = 15
    }
}