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proxy: extract tcp logic out further (#24)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| // Copyright 2022 PingCAP, Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package backend | ||
|
|
||
| import ( | ||
| "crypto/tls" | ||
| "net" | ||
| "testing" | ||
|
|
||
| pnet "github.com/pingcap/TiProxy/pkg/proxy/net" | ||
| "github.com/pingcap/TiProxy/pkg/util/security" | ||
| "github.com/pingcap/tidb/util" | ||
| "github.com/stretchr/testify/require" | ||
| ) | ||
|
|
||
| type tcpConnSuite struct { | ||
| backendListener net.Listener | ||
| proxyListener net.Listener | ||
| backendTLSConfig *tls.Config | ||
| clientTLSConfig *tls.Config | ||
| backendIO *pnet.PacketIO | ||
| proxyBIO *pnet.PacketIO | ||
| proxyCIO *pnet.PacketIO | ||
| clientIO *pnet.PacketIO | ||
| } | ||
|
|
||
| func newTCPConnSuite(t *testing.T) *tcpConnSuite { | ||
| var err error | ||
|
|
||
| r := &tcpConnSuite{} | ||
|
|
||
| r.backendListener, err = net.Listen("tcp", "0.0.0.0:0") | ||
| require.NoError(t, err) | ||
| r.proxyListener, err = net.Listen("tcp", "0.0.0.0:0") | ||
| require.NoError(t, err) | ||
| r.backendTLSConfig, r.clientTLSConfig, err = security.CreateTLSConfigForTest() | ||
| require.NoError(t, err) | ||
| t.Cleanup(func() { | ||
| require.NoError(t, r.backendListener.Close()) | ||
| require.NoError(t, r.proxyListener.Close()) | ||
| }) | ||
|
|
||
| return r | ||
| } | ||
|
|
||
| func (tc *tcpConnSuite) newConn(t *testing.T) func() { | ||
| var wg util.WaitGroupWrapper | ||
| wg.Run(func() { | ||
| conn, err := tc.backendListener.Accept() | ||
| require.NoError(t, err) | ||
| tc.backendIO = pnet.NewPacketIO(conn) | ||
| }) | ||
| wg.Run(func() { | ||
| backendConn, err := net.Dial("tcp", tc.backendListener.Addr().String()) | ||
| require.NoError(t, err) | ||
| tc.proxyBIO = pnet.NewPacketIO(backendConn) | ||
|
|
||
| clientConn, err := tc.proxyListener.Accept() | ||
| require.NoError(t, err) | ||
| tc.proxyCIO = pnet.NewPacketIO(clientConn) | ||
| }) | ||
| wg.Run(func() { | ||
| conn, err := net.Dial("tcp", tc.proxyListener.Addr().String()) | ||
| require.NoError(t, err) | ||
| tc.clientIO = pnet.NewPacketIO(conn) | ||
| }) | ||
| wg.Wait() | ||
| return func() { | ||
| // may be closed twice | ||
| _ = tc.clientIO.Close() | ||
| _ = tc.proxyCIO.Close() | ||
| _ = tc.proxyBIO.Close() | ||
| _ = tc.backendIO.Close() | ||
| } | ||
| } | ||
|
|
||
| func (tc *tcpConnSuite) run(t *testing.T, clientRunner, backendRunner func(*pnet.PacketIO) error, proxyRunner func(*pnet.PacketIO, *pnet.PacketIO) error) (cerr, berr, perr error) { | ||
| var wg util.WaitGroupWrapper | ||
| if clientRunner != nil { | ||
| wg.Run(func() { | ||
| cerr = clientRunner(tc.clientIO) | ||
| if cerr != nil { | ||
| require.NoError(t, tc.clientIO.Close()) | ||
| } | ||
| }) | ||
| } | ||
| if backendRunner != nil { | ||
| wg.Run(func() { | ||
| berr = backendRunner(tc.backendIO) | ||
| if berr != nil { | ||
| require.NoError(t, tc.backendIO.Close()) | ||
| } | ||
| }) | ||
| } | ||
| if proxyRunner != nil { | ||
| wg.Run(func() { | ||
| perr = proxyRunner(tc.proxyCIO, tc.proxyBIO) | ||
| if perr != nil { | ||
| require.NoError(t, tc.proxyCIO.Close()) | ||
| require.NoError(t, tc.proxyBIO.Close()) | ||
| } | ||
| }) | ||
| } | ||
| wg.Wait() | ||
| return | ||
| } |
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