114 lines
3.6 KiB
Go
114 lines
3.6 KiB
Go
// +build go1.7
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/*
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* Copyright 2016, Google Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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package grpc
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import (
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"context"
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"io"
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"net"
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"net/http"
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"os"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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"google.golang.org/grpc/transport"
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netctx "golang.org/x/net/context"
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)
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// dialContext connects to the address on the named network.
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func dialContext(ctx context.Context, network, address string) (net.Conn, error) {
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return (&net.Dialer{}).DialContext(ctx, network, address)
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}
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func sendHTTPRequest(ctx context.Context, req *http.Request, conn net.Conn) error {
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req = req.WithContext(ctx)
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if err := req.Write(conn); err != nil {
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return err
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}
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return nil
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}
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// toRPCErr converts an error into an error from the status package.
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func toRPCErr(err error) error {
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if _, ok := status.FromError(err); ok {
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return err
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}
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switch e := err.(type) {
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case transport.StreamError:
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return status.Error(e.Code, e.Desc)
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case transport.ConnectionError:
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return status.Error(codes.Internal, e.Desc)
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default:
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switch err {
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case context.DeadlineExceeded, netctx.DeadlineExceeded:
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return status.Error(codes.DeadlineExceeded, err.Error())
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case context.Canceled, netctx.Canceled:
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return status.Error(codes.Canceled, err.Error())
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case ErrClientConnClosing:
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return status.Error(codes.FailedPrecondition, err.Error())
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}
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}
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return status.Error(codes.Unknown, err.Error())
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}
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// convertCode converts a standard Go error into its canonical code. Note that
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// this is only used to translate the error returned by the server applications.
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func convertCode(err error) codes.Code {
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switch err {
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case nil:
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return codes.OK
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case io.EOF:
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return codes.OutOfRange
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case io.ErrClosedPipe, io.ErrNoProgress, io.ErrShortBuffer, io.ErrShortWrite, io.ErrUnexpectedEOF:
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return codes.FailedPrecondition
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case os.ErrInvalid:
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return codes.InvalidArgument
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case context.Canceled, netctx.Canceled:
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return codes.Canceled
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case context.DeadlineExceeded, netctx.DeadlineExceeded:
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return codes.DeadlineExceeded
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}
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switch {
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case os.IsExist(err):
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return codes.AlreadyExists
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case os.IsNotExist(err):
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return codes.NotFound
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case os.IsPermission(err):
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return codes.PermissionDenied
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}
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return codes.Unknown
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}
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