forked from toolshed/abra
97 lines
3.0 KiB
Go
97 lines
3.0 KiB
Go
/*
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Copyright The containerd Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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// Package errhttp provides utility functions for translating errors to
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// and from a HTTP context.
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//
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// The functions ToHTTP and ToNative can be used to map server-side and
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// client-side errors to the correct types.
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package errhttp
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import (
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"errors"
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"net/http"
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"github.com/containerd/errdefs"
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"github.com/containerd/errdefs/pkg/internal/cause"
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)
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// ToHTTP returns the best status code for the given error
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func ToHTTP(err error) int {
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switch {
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case errdefs.IsNotFound(err):
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return http.StatusNotFound
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case errdefs.IsInvalidArgument(err):
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return http.StatusBadRequest
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case errdefs.IsConflict(err):
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return http.StatusConflict
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case errdefs.IsNotModified(err):
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return http.StatusNotModified
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case errdefs.IsFailedPrecondition(err):
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return http.StatusPreconditionFailed
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case errdefs.IsUnauthorized(err):
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return http.StatusUnauthorized
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case errdefs.IsPermissionDenied(err):
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return http.StatusForbidden
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case errdefs.IsResourceExhausted(err):
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return http.StatusTooManyRequests
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case errdefs.IsInternal(err):
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return http.StatusInternalServerError
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case errdefs.IsNotImplemented(err):
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return http.StatusNotImplemented
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case errdefs.IsUnavailable(err):
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return http.StatusServiceUnavailable
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case errdefs.IsUnknown(err):
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var unexpected cause.ErrUnexpectedStatus
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if errors.As(err, &unexpected) && unexpected.Status >= 200 && unexpected.Status < 600 {
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return unexpected.Status
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}
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return http.StatusInternalServerError
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default:
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return http.StatusInternalServerError
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}
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}
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// ToNative returns the error best matching the HTTP status code
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func ToNative(statusCode int) error {
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switch statusCode {
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case http.StatusNotFound:
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return errdefs.ErrNotFound
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case http.StatusBadRequest:
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return errdefs.ErrInvalidArgument
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case http.StatusConflict:
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return errdefs.ErrConflict
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case http.StatusPreconditionFailed:
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return errdefs.ErrFailedPrecondition
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case http.StatusUnauthorized:
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return errdefs.ErrUnauthenticated
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case http.StatusForbidden:
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return errdefs.ErrPermissionDenied
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case http.StatusNotModified:
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return errdefs.ErrNotModified
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case http.StatusTooManyRequests:
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return errdefs.ErrResourceExhausted
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case http.StatusInternalServerError:
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return errdefs.ErrInternal
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case http.StatusNotImplemented:
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return errdefs.ErrNotImplemented
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case http.StatusServiceUnavailable:
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return errdefs.ErrUnavailable
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default:
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return cause.ErrUnexpectedStatus{Status: statusCode}
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}
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}
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