67 lines
1.9 KiB
Go
67 lines
1.9 KiB
Go
// Copyright 2019 The Cockroach 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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// http://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
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// implied. See the License for the specific language governing
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// permissions and limitations under the License.
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// +build !plan9
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package errbase
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import (
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"context"
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"os"
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"runtime"
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"syscall"
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"github.com/cockroachdb/errors/errorspb"
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"github.com/gogo/protobuf/proto"
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)
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const thisArch = runtime.GOOS + ":" + runtime.GOARCH
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func encodeErrno(_ context.Context, err error) (msg string, safe []string, payload proto.Message) {
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e := err.(syscall.Errno)
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payload = &errorspb.ErrnoPayload{
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OrigErrno: int64(e),
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Arch: thisArch,
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IsPermission: e.Is(os.ErrPermission),
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IsExist: e.Is(os.ErrExist),
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IsNotExist: e.Is(os.ErrNotExist),
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IsTimeout: e.Timeout(),
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IsTemporary: e.Temporary(),
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}
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return e.Error(), []string{e.Error()}, payload
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}
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func decodeErrno(_ context.Context, msg string, _ []string, payload proto.Message) error {
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m, ok := payload.(*errorspb.ErrnoPayload)
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if !ok {
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// If this ever happens, this means some version of the library
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// (presumably future) changed the payload type, and we're
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// receiving this here. In this case, give up and let
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// DecodeError use the opaque type.
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return nil
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}
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if m.Arch != thisArch {
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// The errno object is coming from a different platform. We'll
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// keep it opaque here.
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return &OpaqueErrno{msg: msg, details: m}
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}
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return syscall.Errno(m.OrigErrno)
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}
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func init() {
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pKey := GetTypeKey(syscall.Errno(0))
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RegisterLeafEncoder(pKey, encodeErrno)
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RegisterLeafDecoder(pKey, decodeErrno)
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}
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