mirror of
https://github.com/gravitational/teleport.git
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rosstimothy
9440763235
Provides a client that can be used to connect to and interact with the transport service in `lib/srv/transport`. The client abstracts the fact that a gRPC stream is being used for the `net.Conn` created by `DialCluster` and `DialHost`. This also moves `lib/utils/grpc/stream` to `api/utils/grpc/stream` so that the client and server can make use of the same stream abstractions. Part of #19812
148 lines
3.2 KiB
Go
148 lines
3.2 KiB
Go
// Copyright 2023 Gravitational, Inc
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package stream
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import (
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"context"
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"net"
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"sync"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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type mockStream struct {
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ctx context.Context
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conn net.Conn
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}
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func newMockStream(ctx context.Context, conn net.Conn) *mockStream {
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return &mockStream{
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ctx: ctx,
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conn: conn,
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}
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}
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func (m *mockStream) Context() context.Context {
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return m.ctx
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}
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func (m *mockStream) Send(b []byte) error {
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_, err := m.conn.Write(b)
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return err
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}
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func (m *mockStream) Recv() ([]byte, error) {
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b := make([]byte, 2*MaxChunkSize)
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n, err := m.conn.Read(b)
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return b[:n], err
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}
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func newStreamPipe(t *testing.T) (*ReadWriter, net.Conn) {
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local, remote := net.Pipe()
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stream := newMockStream(context.Background(), remote)
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timeout := time.Now().Add(time.Second * 5)
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require.NoError(t, local.SetReadDeadline(timeout))
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require.NoError(t, local.SetWriteDeadline(timeout))
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require.NoError(t, remote.SetReadDeadline(timeout))
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require.NoError(t, remote.SetWriteDeadline(timeout))
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streamConn, err := NewReadWriter(stream)
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require.NoError(t, err)
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return streamConn, local
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}
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func TestReadWriter_Write(t *testing.T) {
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streamConn, local := newStreamPipe(t)
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wg := &sync.WaitGroup{}
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wg.Add(2)
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data := []byte("hello world!")
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go func() {
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defer wg.Done()
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n, err := streamConn.Write(data)
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assert.NoError(t, err)
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assert.Equal(t, len(data), n)
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}()
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go func() {
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defer wg.Done()
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b := make([]byte, 2*MaxChunkSize)
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n, err := local.Read(b)
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assert.NoError(t, err)
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assert.Equal(t, len(data), n)
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assert.Equal(t, data, b[:n])
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}()
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wg.Wait()
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}
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func TestReadWriter_WriteChunk(t *testing.T) {
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streamConn, local := newStreamPipe(t)
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wg := &sync.WaitGroup{}
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wg.Add(2)
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data := make([]byte, MaxChunkSize+1)
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go func() {
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defer wg.Done()
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n, err := streamConn.Write(data)
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assert.NoError(t, err)
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assert.Equal(t, len(data), n)
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}()
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go func() {
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defer wg.Done()
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b := make([]byte, 2*MaxChunkSize)
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n, err := local.Read(b)
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assert.NoError(t, err)
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assert.Equal(t, MaxChunkSize, n)
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assert.Equal(t, data[:n], b[:n])
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n, err = local.Read(b)
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assert.NoError(t, err)
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assert.Equal(t, 1, n)
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assert.Equal(t, data[:n], b[:n])
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}()
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wg.Wait()
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}
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func TestReadWriter_Read(t *testing.T) {
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streamConn, local := newStreamPipe(t)
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wg := &sync.WaitGroup{}
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wg.Add(2)
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data := make([]byte, MaxChunkSize+1)
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go func() {
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b := make([]byte, 2*MaxChunkSize)
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defer wg.Done()
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n, err := streamConn.Read(b)
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assert.NoError(t, err)
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assert.Equal(t, len(data), n)
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assert.Equal(t, data, b[:n])
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}()
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go func() {
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defer wg.Done()
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n, err := local.Write(data)
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assert.NoError(t, err)
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assert.Equal(t, len(data), n)
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}()
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wg.Wait()
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}
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