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package proxy_test
import (
"net"
"testing"
"github.com/stretchr/testify/require"
"gitlab.com/gitlab-org/gitaly/internal/praefect/grpc-proxy/proxy"
"golang.org/x/net/context"
"google.golang.org/grpc"
testservice "gitlab.com/gitlab-org/gitaly/internal/praefect/grpc-proxy/testdata"
)
func newListener(tb testing.TB) net.Listener {
listener, err := net.Listen("tcp", "127.0.0.1:0")
require.NoError(tb, err, "must be able to allocate a port for listener")
return listener
}
func newBackendPinger(tb testing.TB, ctx context.Context) (*grpc.ClientConn, *interceptPinger, func()) {
ip := &interceptPinger{}
done := make(chan struct{})
srvr := grpc.NewServer()
listener := newListener(tb)
testservice.RegisterTestServiceServer(srvr, ip)
go func() {
defer close(done)
srvr.Serve(listener)
}()
cc, err := grpc.DialContext(
ctx,
listener.Addr().String(),
grpc.WithInsecure(),
grpc.WithBlock(),
grpc.WithDefaultCallOptions(
grpc.CallCustomCodec(proxy.Codec()),
),
)
require.NoError(tb, err)
cleanup := func() {
srvr.GracefulStop()
require.NoError(tb, cc.Close())
<-done
}
return cc, ip, cleanup
}
func newProxy(tb testing.TB, ctx context.Context, director proxy.StreamDirector, svc, method string) (*grpc.ClientConn, func()) {
proxySrvr := grpc.NewServer(
grpc.CustomCodec(proxy.Codec()),
grpc.UnknownServiceHandler(proxy.TransparentHandler(director)),
)
proxy.RegisterService(proxySrvr, director, svc, method)
done := make(chan struct{})
listener := newListener(tb)
go func() {
defer close(done)
proxySrvr.Serve(listener)
}()
proxyCC, err := grpc.DialContext(
ctx,
listener.Addr().String(),
grpc.WithInsecure(),
grpc.WithBlock(),
)
require.NoError(tb, err)
cleanup := func() {
proxySrvr.GracefulStop()
require.NoError(tb, proxyCC.Close())
<-done
}
return proxyCC, cleanup
}
// interceptPinger allows an RPC to be intercepted with a custom
// function defined in each unit test
type interceptPinger struct {
pingStream func(testservice.TestService_PingStreamServer) error
pingEmpty func(context.Context, *testservice.Empty) (*testservice.PingResponse, error)
ping func(context.Context, *testservice.PingRequest) (*testservice.PingResponse, error)
pingError func(context.Context, *testservice.PingRequest) (*testservice.Empty, error)
pingList func(*testservice.PingRequest, testservice.TestService_PingListServer) error
}
func (ip *interceptPinger) PingStream(stream testservice.TestService_PingStreamServer) error {
return ip.pingStream(stream)
}
func (ip *interceptPinger) PingEmpty(ctx context.Context, req *testservice.Empty) (*testservice.PingResponse, error) {
return ip.pingEmpty(ctx, req)
}
func (ip *interceptPinger) Ping(ctx context.Context, req *testservice.PingRequest) (*testservice.PingResponse, error) {
return ip.ping(ctx, req)
}
func (ip *interceptPinger) PingError(ctx context.Context, req *testservice.PingRequest) (*testservice.Empty, error) {
return ip.pingError(ctx, req)
}
func (ip *interceptPinger) PingList(req *testservice.PingRequest, stream testservice.TestService_PingListServer) error {
return ip.pingList(req, stream)
}
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