Marvin Preuss
1d4ae27878
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92 lines
2.8 KiB
Go
92 lines
2.8 KiB
Go
// Copyright 2019 The Go Cloud Development Kit Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package gcerrors provides support for getting error codes from
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// errors returned by Go CDK APIs.
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package gcerrors
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import (
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"context"
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"gocloud.dev/internal/gcerr"
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"golang.org/x/xerrors"
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)
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// An ErrorCode describes the error's category. Programs should act upon an error's
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// code, not its message.
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type ErrorCode = gcerr.ErrorCode
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const (
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// Returned by the Code function on a nil error. It is not a valid
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// code for an error.
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OK ErrorCode = gcerr.OK
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// The error could not be categorized.
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Unknown ErrorCode = gcerr.Unknown
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// The resource was not found.
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NotFound ErrorCode = gcerr.NotFound
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// The resource exists, but it should not.
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AlreadyExists ErrorCode = gcerr.AlreadyExists
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// A value given to a Go CDK API is incorrect.
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InvalidArgument ErrorCode = gcerr.InvalidArgument
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// Something unexpected happened. Internal errors always indicate
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// bugs in the Go CDK (or possibly the underlying service).
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Internal ErrorCode = gcerr.Internal
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// The feature is not implemented.
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Unimplemented ErrorCode = gcerr.Unimplemented
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// The system was in the wrong state.
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FailedPrecondition ErrorCode = gcerr.FailedPrecondition
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// The caller does not have permission to execute the specified operation.
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PermissionDenied ErrorCode = gcerr.PermissionDenied
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// Some resource has been exhausted, typically because a service resource limit
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// has been reached.
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ResourceExhausted ErrorCode = gcerr.ResourceExhausted
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// The operation was canceled.
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Canceled ErrorCode = gcerr.Canceled
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// The operation timed out.
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DeadlineExceeded ErrorCode = gcerr.DeadlineExceeded
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)
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// Code returns the ErrorCode of err if it, or some error it wraps, is an *Error.
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// If err is context.Canceled or context.DeadlineExceeded, or wraps one of those errors,
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// it returns the Canceled or DeadlineExceeded codes, respectively.
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// If err is nil, it returns the special code OK.
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// Otherwise, it returns Unknown.
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func Code(err error) ErrorCode {
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if err == nil {
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return OK
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}
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var e *gcerr.Error
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if xerrors.As(err, &e) {
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return e.Code
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}
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if xerrors.Is(err, context.Canceled) {
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return Canceled
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}
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if xerrors.Is(err, context.DeadlineExceeded) {
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return DeadlineExceeded
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}
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return Unknown
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}
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