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pipe.go
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pipe.go
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// Copyright (c) 2022 Gobalsky Labs Limited
//
// Use of this software is governed by the Business Source License included
// in the LICENSE file and at https://www.mariadb.com/bsl11.
//
// Change Date: 18 months from the later of the date of the first publicly
// available Distribution of this version of the repository, and 25 June 2022.
//
// On the date above, in accordance with the Business Source License, use
// of this software will be governed by version 3 or later of the GNU General
// Public License.
package pipe
import (
"context"
"fmt"
"net"
"google.golang.org/grpc"
)
type Pipe struct {
ch chan net.Conn
done chan any
addr Addr
}
func NewPipe(name string) *Pipe {
return &Pipe{
ch: make(chan net.Conn),
addr: Addr{name: name},
}
}
func (p *Pipe) Accept() (net.Conn, error) {
conn, ok := <-p.ch
if !ok {
return nil, fmt.Errorf("connection channel unexpectedly closed")
}
return conn, nil
}
func (p *Pipe) Close() error {
close(p.ch)
<-p.done
return nil
}
func (p *Pipe) Addr() net.Addr {
return &p.addr
}
func (p *Pipe) Dial(ctx context.Context, something string) (net.Conn, error) {
conn1, conn2 := net.Pipe()
select {
case p.ch <- conn1:
return conn2, nil
case <-ctx.Done():
conn1.Close()
conn2.Close()
return nil, ctx.Err()
}
}
func (p *Pipe) DialGRPC(opts ...grpc.DialOption) (*grpc.ClientConn, error) {
newOpts := make([]grpc.DialOption, 0, len(opts)+1)
newOpts = append(newOpts, grpc.WithContextDialer(p.Dial))
newOpts = append(newOpts, opts...)
return grpc.DialContext(
context.Background(),
p.Addr().String(),
newOpts...,
)
}