+++ /dev/null
-// +build go1.7
-
-/*
- *
- * Copyright 2016 gRPC authors.
- *
- * 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.
- *
- */
-
-package grpc
-
-import (
- "context"
- "fmt"
- "io"
- "net"
- "net/http"
- "os"
-
- netctx "golang.org/x/net/context"
- "google.golang.org/grpc/codes"
- "google.golang.org/grpc/status"
- "google.golang.org/grpc/transport"
-)
-
-// dialContext connects to the address on the named network.
-func dialContext(ctx context.Context, network, address string) (net.Conn, error) {
- return (&net.Dialer{}).DialContext(ctx, network, address)
-}
-
-func sendHTTPRequest(ctx context.Context, req *http.Request, conn net.Conn) error {
- req = req.WithContext(ctx)
- if err := req.Write(conn); err != nil {
- return fmt.Errorf("failed to write the HTTP request: %v", err)
- }
- return nil
-}
-
-// toRPCErr converts an error into an error from the status package.
-func toRPCErr(err error) error {
- if _, ok := status.FromError(err); ok {
- return err
- }
- switch e := err.(type) {
- case transport.StreamError:
- return status.Error(e.Code, e.Desc)
- case transport.ConnectionError:
- return status.Error(codes.Unavailable, e.Desc)
- default:
- switch err {
- case context.DeadlineExceeded, netctx.DeadlineExceeded:
- return status.Error(codes.DeadlineExceeded, err.Error())
- case context.Canceled, netctx.Canceled:
- return status.Error(codes.Canceled, err.Error())
- case ErrClientConnClosing:
- return status.Error(codes.FailedPrecondition, err.Error())
- }
- }
- return status.Error(codes.Unknown, err.Error())
-}
-
-// convertCode converts a standard Go error into its canonical code. Note that
-// this is only used to translate the error returned by the server applications.
-func convertCode(err error) codes.Code {
- switch err {
- case nil:
- return codes.OK
- case io.EOF:
- return codes.OutOfRange
- case io.ErrClosedPipe, io.ErrNoProgress, io.ErrShortBuffer, io.ErrShortWrite, io.ErrUnexpectedEOF:
- return codes.FailedPrecondition
- case os.ErrInvalid:
- return codes.InvalidArgument
- case context.Canceled, netctx.Canceled:
- return codes.Canceled
- case context.DeadlineExceeded, netctx.DeadlineExceeded:
- return codes.DeadlineExceeded
- }
- switch {
- case os.IsExist(err):
- return codes.AlreadyExists
- case os.IsNotExist(err):
- return codes.NotFound
- case os.IsPermission(err):
- return codes.PermissionDenied
- }
- return codes.Unknown
-}