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listener.go
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/
listener.go
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package bufconn
import (
"context"
"net"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials/insecure"
"google.golang.org/grpc/test/bufconn"
)
// GRPCListener handles gRPC connections using a bufconn listener. This is useful for
// testing when it's unnecessary to have a live gRPC server running. The normal
// workflow is to call New() to start the listener, Connect() to start a gRPC
// connection under which to send client calls, Close() to close the connection, and
// Release() to close the listener.
type GRPCListener struct {
Listener *bufconn.Listener
Conn *grpc.ClientConn
}
func New(bufSize int) *GRPCListener {
return &GRPCListener{
Listener: bufconn.Listen(bufSize),
}
}
func (g *GRPCListener) Connect() (err error) {
ctx := context.Background()
if g.Conn, err = grpc.DialContext(ctx, "bufnet", grpc.WithContextDialer(g.dialer), grpc.WithTransportCredentials(insecure.NewCredentials())); err != nil {
return err
}
return nil
}
func (g *GRPCListener) dialer(context.Context, string) (net.Conn, error) {
return g.Listener.Dial()
}
func (g *GRPCListener) Close() {
g.Conn.Close()
}
func (s *GRPCListener) Release() {
s.Listener.Close()
}