From afd72bac6e1bc51418fd2e1c6e6d92f8f00f7de7 Mon Sep 17 00:00:00 2001 From: Juanjo Alvarez Date: Fri, 9 Aug 2019 16:17:54 +0200 Subject: [PATCH 1/6] Enforce the read timeout on row iterator reads Signed-off-by: Juanjo Alvarez --- go.mod | 18 ++-- go.sum | 207 +++++++++++++++++++++++++++++++++++++++++ server/context.go | 27 +++++- server/handler.go | 82 ++++++++++++---- server/handler_test.go | 203 +++++++++++++++++++++++----------------- server/server.go | 2 +- 6 files changed, 417 insertions(+), 122 deletions(-) diff --git a/go.mod b/go.mod index d409bd6b2..462b50249 100644 --- a/go.mod +++ b/go.mod @@ -1,30 +1,24 @@ module github.com/src-d/go-mysql-server require ( - github.com/StackExchange/wmi v0.0.0-20181212234831-e0a55b97c705 // indirect - github.com/VividCortex/gohistogram v1.0.0 // indirect github.com/go-kit/kit v0.8.0 - github.com/go-ole/go-ole v1.2.4 // indirect github.com/go-sql-driver/mysql v1.4.1 - github.com/gogo/protobuf v1.2.1 // indirect github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b - github.com/golang/protobuf v1.3.0 // indirect - github.com/gorilla/handlers v1.4.0 // indirect github.com/mitchellh/hashstructure v1.0.0 github.com/oliveagle/jsonpath v0.0.0-20180606110733-2e52cf6e6852 - github.com/opentracing/opentracing-go v1.0.2 + github.com/opentracing/opentracing-go v1.1.0 github.com/pbnjay/memory v0.0.0-20190104145345-974d429e7ae4 github.com/pilosa/pilosa v1.3.0 github.com/sanity-io/litter v1.1.0 - github.com/shirou/w32 v0.0.0-20160930032740-bb4de0191aa4 // indirect github.com/sirupsen/logrus v1.3.0 github.com/spf13/cast v1.3.0 - github.com/src-d/go-oniguruma v1.0.0 - github.com/stretchr/testify v1.2.2 + github.com/src-d/gitbase v0.23.1 + github.com/src-d/go-oniguruma v1.1.0 + github.com/stretchr/testify v1.3.0 go.etcd.io/bbolt v1.3.2 - golang.org/x/net v0.0.0-20190227022144-312bce6e941f // indirect - google.golang.org/grpc v1.19.0 // indirect gopkg.in/src-d/go-errors.v1 v1.0.0 + gopkg.in/src-d/go-git.v4 v4.13.1 + gopkg.in/src-d/go-mysql-server.v0 v0.5.1 gopkg.in/yaml.v2 v2.2.2 vitess.io/vitess v3.0.0-rc.3.0.20190602171040-12bfde34629c+incompatible ) diff --git a/go.sum b/go.sum index 5632ba0b5..55e3a0288 100644 --- a/go.sum +++ b/go.sum @@ -1,43 +1,76 @@ cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8= +github.com/BurntSushi/toml v0.3.0/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ= github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= +github.com/CAFxX/gcnotifier v0.0.0-20170518020117-39b0596a2da3/go.mod h1:Rn2zM2MnHze07LwkneP48TWt6UiZhzQTwCvw6djVGfE= github.com/CAFxX/gcnotifier v0.0.0-20190112062741-224a280d589d h1:n0G4ckjMEj7bWuGYUX0i8YlBeBBJuZ+HEHvHfyBDZtI= github.com/CAFxX/gcnotifier v0.0.0-20190112062741-224a280d589d/go.mod h1:Rn2zM2MnHze07LwkneP48TWt6UiZhzQTwCvw6djVGfE= github.com/DataDog/datadog-go v0.0.0-20180822151419-281ae9f2d895 h1:dmc/C8bpE5VkQn65PNbbyACDC8xw8Hpp/NEurdPmQDQ= github.com/DataDog/datadog-go v0.0.0-20180822151419-281ae9f2d895/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ= +github.com/Microsoft/go-winio v0.4.8/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA= +github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5/go.mod h1:lmUJ/7eu/Q8D7ML55dXQrVaamCz2vxCfdQBasLZfHKk= github.com/OneOfOne/xxhash v1.2.2 h1:KMrpdQIwFcEqXDklaen+P1axHaj9BSKzvpUUfnHldSE= github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU= github.com/StackExchange/wmi v0.0.0-20181212234831-e0a55b97c705 h1:UUppSQnhf4Yc6xGxSkoQpPhb7RVzuv5Nb1mwJ5VId9s= github.com/StackExchange/wmi v0.0.0-20181212234831-e0a55b97c705/go.mod h1:3eOhrUMpNV+6aFIbp5/iudMxNCF27Vw2OZgy4xEx0Fg= github.com/VividCortex/gohistogram v1.0.0 h1:6+hBz+qvs0JOrrNhhmR7lFxo5sINxBCGXrdtl/UvroE= github.com/VividCortex/gohistogram v1.0.0/go.mod h1:Pf5mBqqDxYaXu3hDrrU+w6nw50o/4+TcAqDqk/vUH7g= +github.com/alcortesm/tgz v0.0.0-20161220082320-9c5fe88206d7/go.mod h1:6zEj6s6u/ghQa61ZWa/C2Aw3RkjiTBOix7dkqa1VLIs= +github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c= +github.com/antchfx/xpath v0.0.0-20180922041825-3de91f3991a1/go.mod h1:Yee4kTMuNiPYJ7nSNorELQMr1J33uOpXDMByNYhvtNk= +github.com/antchfx/xpath v0.0.0-20190319080838-ce1d48779e67/go.mod h1:Yee4kTMuNiPYJ7nSNorELQMr1J33uOpXDMByNYhvtNk= github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8= github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da h1:8GUt8eRujhVEGZFFEjBj46YV4rDjvGrNxb0KMWYkL2I= github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY= +github.com/armon/go-socks5 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h1:wFXVbFY8DY5/xOe1ECiWdKCzZlxgshcYVNkBHstARME= +gopkg.in/warnings.v0 v0.1.2/go.mod h1:jksf8JmL6Qr/oQM2OXTHunEvvTAsrWBLb6OOjuVWRNI= +gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw= gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw= +honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= modernc.org/mathutil v1.0.0 h1:93vKjrJopTPrtTNpZ8XIovER7iCIH1QU7wNbOQXC60I= modernc.org/mathutil v1.0.0/go.mod h1:wU0vUrJsVWBZ4P6e7xtFJEhFSNsfRLJ8H458uRjg03k= diff --git a/server/context.go b/server/context.go index 974f32a85..4896606ac 100644 --- a/server/context.go +++ b/server/context.go @@ -2,10 +2,9 @@ package server import ( "context" - "sync" - - opentracing "github.com/opentracing/opentracing-go" + "github.com/opentracing/opentracing-go" "github.com/src-d/go-mysql-server/sql" + "sync" "vitess.io/vitess/go/mysql" ) @@ -75,6 +74,28 @@ func (s *SessionManager) NewContext(conn *mysql.Conn) *sql.Context { return s.NewContextWithQuery(conn, "") } +// connChecker checks the connection, trying to peek() into it and if unsucessful +// kills it +//func (s *SessionManager) connChecker(c *mysql.Conn, ctx *sql.Context) { +// // Create a reader using the net.Conn to be able to Peek() into it +// reader := bufio.NewReader(c.Conn) +// counter := 0 +// +// for { +// counter += 1 +// logrus.Warn("XXX connChecker running, counter:", counter) +// time.Sleep(3 * time.Second) // XXX change to something higher +// _, err := reader.Peek(1) +// if err != nil { +// logrus.Warn("XXX Peek failed with error:", err) +// s.CloseConn(c) +// logrus.Warn("XXX Session closed") +// return +// } +// logrus.Warn("XXX connChecker read OK") +// } +//} + // NewContextWithQuery creates a new context for the session at the given conn. func (s *SessionManager) NewContextWithQuery( conn *mysql.Conn, diff --git a/server/handler.go b/server/handler.go index 7f6a39e78..d9a9f3a00 100644 --- a/server/handler.go +++ b/server/handler.go @@ -11,7 +11,7 @@ import ( sqle "github.com/src-d/go-mysql-server" "github.com/src-d/go-mysql-server/auth" "github.com/src-d/go-mysql-server/sql" - errors "gopkg.in/src-d/go-errors.v1" + "gopkg.in/src-d/go-errors.v1" "github.com/sirupsen/logrus" "vitess.io/vitess/go/mysql" @@ -22,24 +22,27 @@ import ( var regKillCmd = regexp.MustCompile(`^kill (?:(query|connection) )?(\d+)$`) var errConnectionNotFound = errors.NewKind("Connection not found: %c") +var RowTimeout = errors.NewKind("Timeout waiting for next row") // TODO parametrize const rowsBatch = 100 // Handler is a connection handler for a SQLe engine. type Handler struct { - mu sync.Mutex - e *sqle.Engine - sm *SessionManager - c map[uint32]*mysql.Conn + mu sync.Mutex + e *sqle.Engine + sm *SessionManager + c map[uint32]*mysql.Conn + readTimeout time.Duration } // NewHandler creates a new Handler given a SQLe engine. -func NewHandler(e *sqle.Engine, sm *SessionManager) *Handler { +func NewHandler(e *sqle.Engine, sm *SessionManager, rt time.Duration) *Handler { return &Handler{ - e: e, - sm: sm, - c: make(map[uint32]*mysql.Conn), + e: e, + sm: sm, + c: make(map[uint32]*mysql.Conn), + readTimeout: rt, } } @@ -86,6 +89,7 @@ func (h *Handler) ComQuery( } if handled { + logrus.Warn("XXX callback called en handled") return callback(&sqltypes.Result{}) } @@ -109,6 +113,7 @@ func (h *Handler) ComQuery( } if r.RowsAffected == rowsBatch { + logrus.Warn("XXX callback called en rowsBatch") if err := callback(r); err != nil { return err } @@ -119,23 +124,60 @@ func (h *Handler) ComQuery( continue } - row, err := rows.Next() - if err != nil { - if err == io.EOF { - break + rowchan := make(chan sql.Row) + errchan := make(chan error) + + go func(rowc chan sql.Row, errc chan error) { + for { + row, err := rows.Next() + if err != nil { + errc <- err + return + } + rowc <- row } + }(rowchan, errchan) - return err + waitTime := 3600 * time.Second + if h.readTimeout > 0 { + waitTime = h.readTimeout } - outputRow, err := rowToSQL(schema, row) - if err != nil { - return err - } + for { + select { + case err := <-errchan: + if err == io.EOF { + close(rowchan) + close(errchan) + logrus.Warn("XXX jump outside main for") + goto EndFor + } - r.Rows = append(r.Rows, outputRow) - r.RowsAffected++ + return err + case row := <-rowchan: + //logrus.Warn("XXX recibido row:", row) + outputRow, err := rowToSQL(schema, row) + if err != nil { + close(rowchan) + close(errchan) + return err + } + + r.Rows = append(r.Rows, outputRow) + r.RowsAffected++ + //logrus.Warn("XXX rowsAffected:", r.RowsAffected) + case <-time.After(waitTime): + if h.readTimeout != 0 { + logrus.Warnf("Row read timeout expired afer %f seconds", + float64(h.readTimeout/time.Second)) + close(rowchan) + close(errchan) + return RowTimeout.New() + } + } + } } +EndFor: if err := rows.Close(); err != nil { return err diff --git a/server/handler_test.go b/server/handler_test.go index 94cf47af3..af11ad425 100644 --- a/server/handler_test.go +++ b/server/handler_test.go @@ -1,21 +1,18 @@ package server import ( - "fmt" "net" "reflect" "testing" "unsafe" + "github.com/opentracing/opentracing-go" sqle "github.com/src-d/go-mysql-server" "github.com/src-d/go-mysql-server/mem" "github.com/src-d/go-mysql-server/sql" + "github.com/stretchr/testify/require" "vitess.io/vitess/go/mysql" "vitess.io/vitess/go/sqltypes" - "vitess.io/vitess/go/vt/proto/query" - - opentracing "github.com/opentracing/opentracing-go" - "github.com/stretchr/testify/require" ) func setupMemDB(require *require.Assertions) *sqle.Engine { @@ -47,12 +44,12 @@ func TestHandlerOutput(t *testing.T) { e := setupMemDB(require.New(t)) dummyConn := &mysql.Conn{ConnectionID: 1} - handler := NewHandler(e, NewSessionManager(testSessionBuilder, opentracing.NoopTracer{}, "foo")) + handler := NewHandler(e, NewSessionManager(testSessionBuilder, opentracing.NoopTracer{}, "foo"), 0) handler.NewConnection(dummyConn) type exptectedValues struct { callsToCallback int - lenLastBacth int + lenLastBatch int lastRowsAffected uint64 } @@ -70,7 +67,7 @@ func TestHandlerOutput(t *testing.T) { query: "SELECT * FROM test", expected: exptectedValues{ callsToCallback: 11, - lenLastBacth: 10, + lenLastBatch: 10, lastRowsAffected: uint64(10), }, }, @@ -81,7 +78,7 @@ func TestHandlerOutput(t *testing.T) { query: "SELECT * FROM test limit 100", expected: exptectedValues{ callsToCallback: 1, - lenLastBacth: 100, + lenLastBatch: 100, lastRowsAffected: uint64(100), }, }, @@ -92,7 +89,7 @@ func TestHandlerOutput(t *testing.T) { query: "SELECT * FROM test limit 60", expected: exptectedValues{ callsToCallback: 1, - lenLastBacth: 60, + lenLastBatch: 60, lastRowsAffected: uint64(60), }, }, @@ -103,7 +100,7 @@ func TestHandlerOutput(t *testing.T) { query: "SELECT * FROM test limit 200", expected: exptectedValues{ callsToCallback: 2, - lenLastBacth: 100, + lenLastBatch: 100, lastRowsAffected: uint64(100), }, }, @@ -114,7 +111,7 @@ func TestHandlerOutput(t *testing.T) { query: "SELECT * FROM test limit 530", expected: exptectedValues{ callsToCallback: 6, - lenLastBacth: 30, + lenLastBatch: 30, lastRowsAffected: uint64(30), }, }, @@ -123,18 +120,18 @@ func TestHandlerOutput(t *testing.T) { for _, test := range tests { t.Run(test.name, func(t *testing.T) { var callsToCallback int - var lenLastBacth int + var lenLastBatch int var lastRowsAffected uint64 err := handler.ComQuery(test.conn, test.query, func(res *sqltypes.Result) error { callsToCallback++ - lenLastBacth = len(res.Rows) + lenLastBatch = len(res.Rows) lastRowsAffected = res.RowsAffected return nil }) require.NoError(t, err) require.Equal(t, test.expected.callsToCallback, callsToCallback) - require.Equal(t, test.expected.lenLastBacth, lenLastBacth) + require.Equal(t, test.expected.lenLastBatch, lenLastBatch) require.Equal(t, test.expected.lastRowsAffected, lastRowsAffected) }) @@ -161,60 +158,61 @@ type mockConn struct { func (c *mockConn) Close() error { return nil } -func TestHandlerKill(t *testing.T) { - require := require.New(t) - e := setupMemDB(require) - - handler := NewHandler( - e, - NewSessionManager( - func(conn *mysql.Conn, addr string) sql.Session { - return sql.NewSession(addr, "", "", conn.ConnectionID) - }, - opentracing.NoopTracer{}, - "foo", - ), - ) - - require.Len(handler.c, 0) - - conn1 := newConn(1) - handler.NewConnection(conn1) - conn2 := newConn(2) - handler.NewConnection(conn2) - - require.Len(handler.sm.sessions, 0) - require.Len(handler.c, 2) - - err := handler.ComQuery(conn2, "KILL QUERY 1", func(res *sqltypes.Result) error { - return nil - }) - - require.NoError(err) - - require.Len(handler.sm.sessions, 1) - require.Len(handler.c, 2) - require.Equal(conn1, handler.c[1]) - require.Equal(conn2, handler.c[2]) - - assertNoConnProcesses(t, e, conn2.ConnectionID) - - ctx1 := handler.sm.NewContextWithQuery(conn1, "SELECT 1") - ctx1, err = handler.e.Catalog.AddProcess(ctx1, sql.QueryProcess, "SELECT 1") - require.NoError(err) - - err = handler.ComQuery(conn2, "KILL "+fmt.Sprint(ctx1.ID()), func(res *sqltypes.Result) error { - return nil - }) - require.NoError(err) - - require.Len(handler.sm.sessions, 1) - require.Len(handler.c, 1) - _, ok := handler.c[1] - require.False(ok) - assertNoConnProcesses(t, e, conn1.ConnectionID) -} - +//func TestHandlerKill(t *testing.T) { +// require := require.New(t) +// e := setupMemDB(require) +// +// handler := NewHandler( +// e, +// NewSessionManager( +// func(conn *mysql.Conn, addr string) sql.Session { +// return sql.NewSession(addr, "", "", conn.ConnectionID) +// }, +// opentracing.NoopTracer{}, +// "foo", +// ), +// 0, +// ) +// +// require.Len(handler.c, 0) +// +// conn1 := newConn(1) +// handler.NewConnection(conn1) +// conn2 := newConn(2) +// handler.NewConnection(conn2) +// +// require.Len(handler.sm.sessions, 0) +// require.Len(handler.c, 2) +// +// err := handler.ComQuery(conn2, "KILL QUERY 1", func(res *sqltypes.Result) error { +// return nil +// }) +// +// require.NoError(err) +// +// require.Len(handler.sm.sessions, 1) +// require.Len(handler.c, 2) +// require.Equal(conn1, handler.c[1]) +// require.Equal(conn2, handler.c[2]) +// +// assertNoConnProcesses(t, e, conn2.ConnectionID) +// +// ctx1 := handler.sm.NewContextWithQuery(conn1, "SELECT 1") +// ctx1, err = handler.e.Catalog.AddProcess(ctx1, sql.QueryProcess, "SELECT 1") +// require.NoError(err) +// +// err = handler.ComQuery(conn2, "KILL "+fmt.Sprint(ctx1.ID()), func(res *sqltypes.Result) error { +// return nil +// }) +// require.NoError(err) +// +// require.Len(handler.sm.sessions, 1) +// require.Len(handler.c, 1) +// _, ok := handler.c[1] +// require.False(ok) +// assertNoConnProcesses(t, e, conn1.ConnectionID) +//} +// func assertNoConnProcesses(t *testing.T, e *sqle.Engine, conn uint32) { t.Helper() @@ -225,21 +223,54 @@ func assertNoConnProcesses(t *testing.T, e *sqle.Engine, conn uint32) { } } -func TestSchemaToFields(t *testing.T) { - require := require.New(t) - schema := sql.Schema{ - {Name: "foo", Type: sql.Blob}, - {Name: "bar", Type: sql.Text}, - {Name: "baz", Type: sql.Int64}, - } - - expected := []*query.Field{ - {Name: "foo", Type: query.Type_BLOB, Charset: mysql.CharacterSetBinary}, - {Name: "bar", Type: query.Type_TEXT, Charset: mysql.CharacterSetUtf8}, - {Name: "baz", Type: query.Type_INT64, Charset: mysql.CharacterSetUtf8}, - } - - fields := schemaToFields(schema) - require.Equal(expected, fields) -} +//func TestSchemaToFields(t *testing.T) { +// require := require.New(t) +// +// schema := sql.Schema{ +// {Name: "foo", Type: sql.Blob}, +// {Name: "bar", Type: sql.Text}, +// {Name: "baz", Type: sql.Int64}, +// } +// +// expected := []*query.Field{ +// {Name: "foo", Type: query.Type_BLOB, Charset: mysql.CharacterSetBinary}, +// {Name: "bar", Type: query.Type_TEXT, Charset: mysql.CharacterSetUtf8}, +// {Name: "baz", Type: query.Type_INT64, Charset: mysql.CharacterSetUtf8}, +// } +// +// fields := schemaToFields(schema) +// require.Equal(expected, fields) +//} + +//func TestHandlerTimeout(t *testing.T) { +// require := require.New(t) +// +// // XXX move to function +// testSessionBuilder := func(c *mysql.Conn, addr string) sql.Session { +// client := "127.0.0.1:34567" +// return sql.NewSession(addr, client, c.User, c.ConnectionID) +// } +// +// e := setupMemDB(require) +// +// timeOutHandler := NewHandler( +// e, NewSessionManager(testSessionBuilder, opentracing.NoopTracer{}, "foo"), +// 1) +// noTimeOutHandler := NewHandler( +// e, NewSessionManager(testSessionBuilder, opentracing.NoopTracer{}, "foo"), +// 0) +// require.Equal(timeOutHandler.readTimeout, 1) +// require.Equal(noTimeOutHandler.readTimeout, 0) +// +// connTimeout := newConn(1) +// timeOutHandler.NewConnection(connTimeout) +// connNoTimeout := newConn(2) +// noTimeOutHandler.NewConnection(connNoTimeout) +// +// err := timeOutHandler.ComQuery(connTimeout, "SELECT SLEEP(2)", func(res *sqltypes.Result) error { +// return nil +// }) +// +// require.NoError(err) +//} diff --git a/server/server.go b/server/server.go index dcb6206c5..3b15d3b34 100644 --- a/server/server.go +++ b/server/server.go @@ -54,7 +54,7 @@ func NewServer(cfg Config, e *sqle.Engine, sb SessionBuilder) (*Server, error) { cfg.ConnWriteTimeout = 0 } - handler := NewHandler(e, NewSessionManager(sb, tracer, cfg.Address)) + handler := NewHandler(e, NewSessionManager(sb, tracer, cfg.Address), cfg.ConnReadTimeout) a := cfg.Auth.Mysql() l, err := mysql.NewListener(cfg.Protocol, cfg.Address, a, handler, cfg.ConnReadTimeout, cfg.ConnWriteTimeout) if err != nil { From bebe8417eb3c380313f32ace82aca73216b6da66 Mon Sep 17 00:00:00 2001 From: Juanjo Alvarez Date: Fri, 9 Aug 2019 18:22:09 +0200 Subject: [PATCH 2/6] Added test for row timeout Signed-off-by: Juanjo Alvarez --- go.mod | 18 ++-- go.sum | 207 ------------------------------------ server/context.go | 22 ---- server/handler.go | 94 ++++++++-------- server/handler_test.go | 236 +++++++++++++++++++++-------------------- 5 files changed, 178 insertions(+), 399 deletions(-) diff --git a/go.mod b/go.mod index 462b50249..d409bd6b2 100644 --- a/go.mod +++ b/go.mod @@ -1,24 +1,30 @@ module github.com/src-d/go-mysql-server require ( + github.com/StackExchange/wmi v0.0.0-20181212234831-e0a55b97c705 // indirect + github.com/VividCortex/gohistogram v1.0.0 // indirect github.com/go-kit/kit v0.8.0 + github.com/go-ole/go-ole v1.2.4 // indirect github.com/go-sql-driver/mysql v1.4.1 + github.com/gogo/protobuf v1.2.1 // indirect github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b + github.com/golang/protobuf v1.3.0 // indirect + github.com/gorilla/handlers v1.4.0 // indirect github.com/mitchellh/hashstructure v1.0.0 github.com/oliveagle/jsonpath v0.0.0-20180606110733-2e52cf6e6852 - github.com/opentracing/opentracing-go v1.1.0 + github.com/opentracing/opentracing-go v1.0.2 github.com/pbnjay/memory v0.0.0-20190104145345-974d429e7ae4 github.com/pilosa/pilosa v1.3.0 github.com/sanity-io/litter v1.1.0 + github.com/shirou/w32 v0.0.0-20160930032740-bb4de0191aa4 // indirect github.com/sirupsen/logrus v1.3.0 github.com/spf13/cast v1.3.0 - github.com/src-d/gitbase v0.23.1 - github.com/src-d/go-oniguruma v1.1.0 - github.com/stretchr/testify v1.3.0 + github.com/src-d/go-oniguruma v1.0.0 + github.com/stretchr/testify v1.2.2 go.etcd.io/bbolt v1.3.2 + golang.org/x/net v0.0.0-20190227022144-312bce6e941f // indirect + google.golang.org/grpc v1.19.0 // indirect gopkg.in/src-d/go-errors.v1 v1.0.0 - gopkg.in/src-d/go-git.v4 v4.13.1 - gopkg.in/src-d/go-mysql-server.v0 v0.5.1 gopkg.in/yaml.v2 v2.2.2 vitess.io/vitess v3.0.0-rc.3.0.20190602171040-12bfde34629c+incompatible ) diff --git a/go.sum b/go.sum index 55e3a0288..5632ba0b5 100644 --- a/go.sum +++ b/go.sum @@ -1,76 +1,43 @@ cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= -github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8= -github.com/BurntSushi/toml v0.3.0/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ= github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= -github.com/CAFxX/gcnotifier v0.0.0-20170518020117-39b0596a2da3/go.mod h1:Rn2zM2MnHze07LwkneP48TWt6UiZhzQTwCvw6djVGfE= github.com/CAFxX/gcnotifier v0.0.0-20190112062741-224a280d589d h1:n0G4ckjMEj7bWuGYUX0i8YlBeBBJuZ+HEHvHfyBDZtI= github.com/CAFxX/gcnotifier v0.0.0-20190112062741-224a280d589d/go.mod h1:Rn2zM2MnHze07LwkneP48TWt6UiZhzQTwCvw6djVGfE= github.com/DataDog/datadog-go v0.0.0-20180822151419-281ae9f2d895 h1:dmc/C8bpE5VkQn65PNbbyACDC8xw8Hpp/NEurdPmQDQ= github.com/DataDog/datadog-go v0.0.0-20180822151419-281ae9f2d895/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ= -github.com/Microsoft/go-winio v0.4.8/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA= -github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5/go.mod h1:lmUJ/7eu/Q8D7ML55dXQrVaamCz2vxCfdQBasLZfHKk= github.com/OneOfOne/xxhash v1.2.2 h1:KMrpdQIwFcEqXDklaen+P1axHaj9BSKzvpUUfnHldSE= github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU= github.com/StackExchange/wmi v0.0.0-20181212234831-e0a55b97c705 h1:UUppSQnhf4Yc6xGxSkoQpPhb7RVzuv5Nb1mwJ5VId9s= github.com/StackExchange/wmi v0.0.0-20181212234831-e0a55b97c705/go.mod h1:3eOhrUMpNV+6aFIbp5/iudMxNCF27Vw2OZgy4xEx0Fg= github.com/VividCortex/gohistogram v1.0.0 h1:6+hBz+qvs0JOrrNhhmR7lFxo5sINxBCGXrdtl/UvroE= github.com/VividCortex/gohistogram v1.0.0/go.mod h1:Pf5mBqqDxYaXu3hDrrU+w6nw50o/4+TcAqDqk/vUH7g= -github.com/alcortesm/tgz v0.0.0-20161220082320-9c5fe88206d7/go.mod h1:6zEj6s6u/ghQa61ZWa/C2Aw3RkjiTBOix7dkqa1VLIs= -github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c= -github.com/antchfx/xpath v0.0.0-20180922041825-3de91f3991a1/go.mod h1:Yee4kTMuNiPYJ7nSNorELQMr1J33uOpXDMByNYhvtNk= -github.com/antchfx/xpath v0.0.0-20190319080838-ce1d48779e67/go.mod h1:Yee4kTMuNiPYJ7nSNorELQMr1J33uOpXDMByNYhvtNk= github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8= github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da h1:8GUt8eRujhVEGZFFEjBj46YV4rDjvGrNxb0KMWYkL2I= github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY= -github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5/go.mod h1:wHh0iHkYZB8zMSxRWpUBQtwG5a7fFgvEO+odwuTv2gs= -github.com/bblfsh/go-client/v4 v4.1.0/go.mod h1:UUAG7jrxSr7WHlFL/U8den1kLHfysZWJ9jA1Y0IiQ+0= -github.com/bblfsh/sdk/v3 v3.1.0/go.mod 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h1:sE/e/2PUdi/liOCUjSTXgM1o87ZssimdTWN964YiIeI= -github.com/containerd/continuity v0.0.0-20180712174259-0377f7d76720/go.mod h1:GL3xCUCBDV3CZiTSEKksMWbLE66hEyuu9qyDOOqM47Y= github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE= github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk= github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk= -github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY= -github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= -github.com/docker/go-connections v0.3.0/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5XhDvyHbTtUxmeec= -github.com/docker/go-units v0.3.3/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk= 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h1:U7qILu1NlMHj9FlMhZLlkCdDnU1DBEAqr0aevW3Awn0= github.com/go-kit/kit v0.8.0 h1:Wz+5lgoB0kkuqLEc6NVmwRknTKP6dTGbSqvhZtBI/j0= github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as= -github.com/go-ole/go-ole v1.2.2/go.mod h1:pnvuG7BrDMZ8ifMurTQmxwhQM/odqm9sSqNe5BUI7v4= github.com/go-ole/go-ole v1.2.4 h1:nNBDSCOigTSiarFpYE9J/KtEA1IOW4CNeqT9TQDqCxI= github.com/go-ole/go-ole v1.2.4/go.mod h1:XCwSNxSkXRo4vlyPy93sltvi/qJq0jqQhjqQNIwKuxM= github.com/go-sql-driver/mysql v1.4.1 h1:g24URVg0OFbNUTx9qqY1IRZ9D9z3iPyi5zKhQZpNwpA= github.com/go-sql-driver/mysql v1.4.1/go.mod h1:zAC/RDZ24gD3HViQzih4MyKcchzm+sOG5ZlKdlhCg5w= -github.com/gogo/protobuf v1.1.0/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ= github.com/gogo/protobuf v1.2.0/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ= github.com/gogo/protobuf v1.2.1 h1:/s5zKNz0uPFCZ5hddgPdo2TK2TVrUNMn0OOX8/aZMTE= github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4= github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58= github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q= -github.com/golang/lint v0.0.0-20180702182130-06c8688daad7/go.mod h1:tluoj9z5200jBnyusfRPU2LqT6J+DAorxEvtC7LHB+E= github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A= github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= github.com/golang/protobuf v1.3.0 h1:kbxbvI4Un1LUWKxufD+BiE6AEExYYgkQLQmLFqA1LFk= @@ -81,128 +48,66 @@ github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c h1:964Od4U6p2jUkFxvCy github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ= github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ= github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M= -github.com/google/go-cmp 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-gopkg.in/src-d/go-mysql-server.v0 v0.5.1/go.mod h1:mArbNH5xInol920MCbpBm432N0ieyiuh+rwhHzSieUs= -gopkg.in/src-d/go-siva.v1 v1.5.0 h1:WowvbZTlz0SPoV7WNCGktPSi2yRK78HPyXl7wYqDeHE= -gopkg.in/src-d/go-siva.v1 v1.5.0/go.mod h1:tk1jnIXawd/PTlRNWdr5V5lC0PttNJmu1fv7wt7IZlw= -gopkg.in/src-d/go-vitess.v1 v1.4.0 h1:TzYmA9ZlE2ALQjZDnK6h4vqkr4k27Kt3rf2j3ewaOUA= -gopkg.in/src-d/go-vitess.v1 v1.4.0/go.mod h1:+g/wDtovsUgE2ioi32fo5Vavrtvfd/N1AvnknTmTvZE= -gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw= -gopkg.in/toqueteos/substring.v1 v1.0.2/go.mod h1:Eb2Z1UYehlVK8LYW2WBVR2rwbujsz3aX8XDrM1vbNew= -gopkg.in/vmihailenco/msgpack.v2 v2.9.1/go.mod h1:/3Dn1Npt9+MYyLpYYXjInO/5jvMLamn+AEGwNEOatn8= -gopkg.in/warnings.v0 v0.1.2 h1:wFXVbFY8DY5/xOe1ECiWdKCzZlxgshcYVNkBHstARME= -gopkg.in/warnings.v0 v0.1.2/go.mod h1:jksf8JmL6Qr/oQM2OXTHunEvvTAsrWBLb6OOjuVWRNI= -gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw= gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= -gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw= -honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= modernc.org/mathutil v1.0.0 h1:93vKjrJopTPrtTNpZ8XIovER7iCIH1QU7wNbOQXC60I= modernc.org/mathutil v1.0.0/go.mod h1:wU0vUrJsVWBZ4P6e7xtFJEhFSNsfRLJ8H458uRjg03k= diff --git a/server/context.go b/server/context.go index 4896606ac..b5b8e9323 100644 --- a/server/context.go +++ b/server/context.go @@ -74,28 +74,6 @@ func (s *SessionManager) NewContext(conn *mysql.Conn) *sql.Context { return s.NewContextWithQuery(conn, "") } -// connChecker checks the connection, trying to peek() into it and if unsucessful -// kills it -//func (s *SessionManager) connChecker(c *mysql.Conn, ctx *sql.Context) { -// // Create a reader using the net.Conn to be able to Peek() into it -// reader := bufio.NewReader(c.Conn) -// counter := 0 -// -// for { -// counter += 1 -// logrus.Warn("XXX connChecker running, counter:", counter) -// time.Sleep(3 * time.Second) // XXX change to something higher -// _, err := reader.Peek(1) -// if err != nil { -// logrus.Warn("XXX Peek failed with error:", err) -// s.CloseConn(c) -// logrus.Warn("XXX Session closed") -// return -// } -// logrus.Warn("XXX connChecker read OK") -// } -//} - // NewContextWithQuery creates a new context for the session at the given conn. func (s *SessionManager) NewContextWithQuery( conn *mysql.Conn, diff --git a/server/handler.go b/server/handler.go index d9a9f3a00..e6c8d0678 100644 --- a/server/handler.go +++ b/server/handler.go @@ -22,7 +22,7 @@ import ( var regKillCmd = regexp.MustCompile(`^kill (?:(query|connection) )?(\d+)$`) var errConnectionNotFound = errors.NewKind("Connection not found: %c") -var RowTimeout = errors.NewKind("Timeout waiting for next row") +var RowTimeout = errors.NewKind("Row read wait bigger than connection timeout") // TODO parametrize const rowsBatch = 100 @@ -89,7 +89,6 @@ func (h *Handler) ComQuery( } if handled { - logrus.Warn("XXX callback called en handled") return callback(&sqltypes.Result{}) } @@ -107,77 +106,70 @@ func (h *Handler) ComQuery( var r *sqltypes.Result var proccesedAtLeastOneBatch bool + + rowchan := make(chan sql.Row) + errchan := make(chan error) + + // This goroutine will be selected giving a change to Vitess to call the + // handler.CloseConnection callback and enforcing the Timeout if configured + go func(rowc chan sql.Row, errc chan error) { + for { + row, err := rows.Next() + if err != nil { + errc <- err + return + } + rowc <- row + } + }(rowchan, errchan) + + // Default (big) waitTime is 3600, but it wont matter if there is no timeout + // because the loop will just iterate again. If there is a timeout, it will + // be enforced to ensure that Vitess has a chance to call Handler.CloseConnection() + waitTime := 3600 * time.Second + if h.readTimeout > 0 { + waitTime = h.readTimeout + } for { if r == nil { r = &sqltypes.Result{Fields: schemaToFields(schema)} } if r.RowsAffected == rowsBatch { - logrus.Warn("XXX callback called en rowsBatch") if err := callback(r); err != nil { return err } r = nil proccesedAtLeastOneBatch = true - continue } - rowchan := make(chan sql.Row) - errchan := make(chan error) - - go func(rowc chan sql.Row, errc chan error) { - for { - row, err := rows.Next() - if err != nil { - errc <- err - return - } - rowc <- row + select { + case err := <-errchan: + if err == io.EOF { + goto EndFor } - }(rowchan, errchan) - - waitTime := 3600 * time.Second - if h.readTimeout > 0 { - waitTime = h.readTimeout - } - - for { - select { - case err := <-errchan: - if err == io.EOF { - close(rowchan) - close(errchan) - logrus.Warn("XXX jump outside main for") - goto EndFor - } + return err + case row := <-rowchan: + outputRow, err := rowToSQL(schema, row) + if err != nil { return err - case row := <-rowchan: - //logrus.Warn("XXX recibido row:", row) - outputRow, err := rowToSQL(schema, row) - if err != nil { - close(rowchan) - close(errchan) - return err - } - - r.Rows = append(r.Rows, outputRow) - r.RowsAffected++ - //logrus.Warn("XXX rowsAffected:", r.RowsAffected) - case <-time.After(waitTime): - if h.readTimeout != 0 { - logrus.Warnf("Row read timeout expired afer %f seconds", - float64(h.readTimeout/time.Second)) - close(rowchan) - close(errchan) - return RowTimeout.New() - } + } + + r.Rows = append(r.Rows, outputRow) + r.RowsAffected++ + case <-time.After(waitTime): + if h.readTimeout != 0 && waitTime >= h.readTimeout { + // Return so Vitess can call the CloseConnection callback + return RowTimeout.New() } } } EndFor: + close(rowchan) + close(errchan) if err := rows.Close(); err != nil { return err diff --git a/server/handler_test.go b/server/handler_test.go index af11ad425..bc9712212 100644 --- a/server/handler_test.go +++ b/server/handler_test.go @@ -1,18 +1,22 @@ package server import ( + "fmt" "net" "reflect" "testing" + "time" "unsafe" - "github.com/opentracing/opentracing-go" sqle "github.com/src-d/go-mysql-server" "github.com/src-d/go-mysql-server/mem" "github.com/src-d/go-mysql-server/sql" - "github.com/stretchr/testify/require" "vitess.io/vitess/go/mysql" "vitess.io/vitess/go/sqltypes" + "vitess.io/vitess/go/vt/proto/query" + + opentracing "github.com/opentracing/opentracing-go" + "github.com/stretchr/testify/require" ) func setupMemDB(require *require.Assertions) *sqle.Engine { @@ -34,13 +38,14 @@ func setupMemDB(require *require.Assertions) *sqle.Engine { return e } +// This session builder is used as dummy mysql Conn is not complete and +// causes panic when accessing remote address. +func testSessionBuilder(c *mysql.Conn, addr string) sql.Session { + client := "127.0.0.1:34567" + return sql.NewSession(addr, client, c.User, c.ConnectionID) +} + func TestHandlerOutput(t *testing.T) { - // This session builder is used as dummy mysql Conn is not complete and - // causes panic when accessing remote address. - testSessionBuilder := func(c *mysql.Conn, addr string) sql.Session { - client := "127.0.0.1:34567" - return sql.NewSession(addr, client, c.User, c.ConnectionID) - } e := setupMemDB(require.New(t)) dummyConn := &mysql.Conn{ConnectionID: 1} @@ -158,61 +163,61 @@ type mockConn struct { func (c *mockConn) Close() error { return nil } -//func TestHandlerKill(t *testing.T) { -// require := require.New(t) -// e := setupMemDB(require) -// -// handler := NewHandler( -// e, -// NewSessionManager( -// func(conn *mysql.Conn, addr string) sql.Session { -// return sql.NewSession(addr, "", "", conn.ConnectionID) -// }, -// opentracing.NoopTracer{}, -// "foo", -// ), -// 0, -// ) -// -// require.Len(handler.c, 0) -// -// conn1 := newConn(1) -// handler.NewConnection(conn1) -// conn2 := newConn(2) -// handler.NewConnection(conn2) -// -// require.Len(handler.sm.sessions, 0) -// require.Len(handler.c, 2) -// -// err := handler.ComQuery(conn2, "KILL QUERY 1", func(res *sqltypes.Result) error { -// return nil -// }) -// -// require.NoError(err) -// -// require.Len(handler.sm.sessions, 1) -// require.Len(handler.c, 2) -// require.Equal(conn1, handler.c[1]) -// require.Equal(conn2, handler.c[2]) -// -// assertNoConnProcesses(t, e, conn2.ConnectionID) -// -// ctx1 := handler.sm.NewContextWithQuery(conn1, "SELECT 1") -// ctx1, err = handler.e.Catalog.AddProcess(ctx1, sql.QueryProcess, "SELECT 1") -// require.NoError(err) -// -// err = handler.ComQuery(conn2, "KILL "+fmt.Sprint(ctx1.ID()), func(res *sqltypes.Result) error { -// return nil -// }) -// require.NoError(err) -// -// require.Len(handler.sm.sessions, 1) -// require.Len(handler.c, 1) -// _, ok := handler.c[1] -// require.False(ok) -// assertNoConnProcesses(t, e, conn1.ConnectionID) -//} -// +func TestHandlerKill(t *testing.T) { + require := require.New(t) + e := setupMemDB(require) + + handler := NewHandler( + e, + NewSessionManager( + func(conn *mysql.Conn, addr string) sql.Session { + return sql.NewSession(addr, "", "", conn.ConnectionID) + }, + opentracing.NoopTracer{}, + "foo", + ), + 0, + ) + + require.Len(handler.c, 0) + + conn1 := newConn(1) + handler.NewConnection(conn1) + conn2 := newConn(2) + handler.NewConnection(conn2) + + require.Len(handler.sm.sessions, 0) + require.Len(handler.c, 2) + + err := handler.ComQuery(conn2, "KILL QUERY 1", func(res *sqltypes.Result) error { + return nil + }) + + require.NoError(err) + + require.Len(handler.sm.sessions, 1) + require.Len(handler.c, 2) + require.Equal(conn1, handler.c[1]) + require.Equal(conn2, handler.c[2]) + + assertNoConnProcesses(t, e, conn2.ConnectionID) + + ctx1 := handler.sm.NewContextWithQuery(conn1, "SELECT 1") + ctx1, err = handler.e.Catalog.AddProcess(ctx1, sql.QueryProcess, "SELECT 1") + require.NoError(err) + + err = handler.ComQuery(conn2, "KILL "+fmt.Sprint(ctx1.ID()), func(res *sqltypes.Result) error { + return nil + }) + require.NoError(err) + + require.Len(handler.sm.sessions, 1) + require.Len(handler.c, 1) + _, ok := handler.c[1] + require.False(ok) + assertNoConnProcesses(t, e, conn1.ConnectionID) +} + func assertNoConnProcesses(t *testing.T, e *sqle.Engine, conn uint32) { t.Helper() @@ -223,54 +228,59 @@ func assertNoConnProcesses(t *testing.T, e *sqle.Engine, conn uint32) { } } +func TestSchemaToFields(t *testing.T) { + require := require.New(t) + + schema := sql.Schema{ + {Name: "foo", Type: sql.Blob}, + {Name: "bar", Type: sql.Text}, + {Name: "baz", Type: sql.Int64}, + } + + expected := []*query.Field{ + {Name: "foo", Type: query.Type_BLOB, Charset: mysql.CharacterSetBinary}, + {Name: "bar", Type: query.Type_TEXT, Charset: mysql.CharacterSetUtf8}, + {Name: "baz", Type: query.Type_INT64, Charset: mysql.CharacterSetUtf8}, + } + + fields := schemaToFields(schema) + require.Equal(expected, fields) +} + +func TestHandlerTimeout(t *testing.T) { + require := require.New(t) -//func TestSchemaToFields(t *testing.T) { -// require := require.New(t) -// -// schema := sql.Schema{ -// {Name: "foo", Type: sql.Blob}, -// {Name: "bar", Type: sql.Text}, -// {Name: "baz", Type: sql.Int64}, -// } -// -// expected := []*query.Field{ -// {Name: "foo", Type: query.Type_BLOB, Charset: mysql.CharacterSetBinary}, -// {Name: "bar", Type: query.Type_TEXT, Charset: mysql.CharacterSetUtf8}, -// {Name: "baz", Type: query.Type_INT64, Charset: mysql.CharacterSetUtf8}, -// } -// -// fields := schemaToFields(schema) -// require.Equal(expected, fields) -//} - -//func TestHandlerTimeout(t *testing.T) { -// require := require.New(t) -// -// // XXX move to function -// testSessionBuilder := func(c *mysql.Conn, addr string) sql.Session { -// client := "127.0.0.1:34567" -// return sql.NewSession(addr, client, c.User, c.ConnectionID) -// } -// -// e := setupMemDB(require) -// -// timeOutHandler := NewHandler( -// e, NewSessionManager(testSessionBuilder, opentracing.NoopTracer{}, "foo"), -// 1) -// noTimeOutHandler := NewHandler( -// e, NewSessionManager(testSessionBuilder, opentracing.NoopTracer{}, "foo"), -// 0) -// require.Equal(timeOutHandler.readTimeout, 1) -// require.Equal(noTimeOutHandler.readTimeout, 0) -// -// connTimeout := newConn(1) -// timeOutHandler.NewConnection(connTimeout) -// connNoTimeout := newConn(2) -// noTimeOutHandler.NewConnection(connNoTimeout) -// -// err := timeOutHandler.ComQuery(connTimeout, "SELECT SLEEP(2)", func(res *sqltypes.Result) error { -// return nil -// }) -// -// require.NoError(err) -//} + e := setupMemDB(require) + e2 := setupMemDB(require) + + timeOutHandler := NewHandler( + e, NewSessionManager(testSessionBuilder, opentracing.NoopTracer{}, "foo"), + 1 * time.Second) + + noTimeOutHandler := NewHandler( + e2, NewSessionManager(testSessionBuilder, opentracing.NoopTracer{}, "foo"), + 0) + require.Equal(1 * time.Second, timeOutHandler.readTimeout) + require.Equal(0 * time.Second, noTimeOutHandler.readTimeout) + + connTimeout := newConn(1) + timeOutHandler.NewConnection(connTimeout) + + connNoTimeout := newConn(2) + noTimeOutHandler.NewConnection(connNoTimeout) + + err := timeOutHandler.ComQuery(connTimeout, "SELECT SLEEP(2)", func(res *sqltypes.Result) error { + return nil + }) + require.EqualError(err, "Row read wait bigger than connection timeout") + + err = timeOutHandler.ComQuery(connTimeout, "SELECT SLEEP(0.5)", func(res *sqltypes.Result) error { + return nil + }) + require.NoError(err) + + err = noTimeOutHandler.ComQuery(connNoTimeout, "SELECT SLEEP(2)", func(res *sqltypes.Result) error { + return nil + }) + require.NoError(err) +} From 6f8dd72149fec88ce5d46f6dedc00becf6fd8f7f Mon Sep 17 00:00:00 2001 From: Juanjo Alvarez Date: Fri, 9 Aug 2019 21:36:57 +0200 Subject: [PATCH 3/6] Review feedback and some simplified logic for the row read select Signed-off-by: Juanjo Alvarez --- server/handler.go | 37 ++++++++++++++++++++++++------------- 1 file changed, 24 insertions(+), 13 deletions(-) diff --git a/server/handler.go b/server/handler.go index e6c8d0678..9d14a5fab 100644 --- a/server/handler.go +++ b/server/handler.go @@ -109,27 +109,34 @@ func (h *Handler) ComQuery( rowchan := make(chan sql.Row) errchan := make(chan error) + quit := make(chan bool, 2) - // This goroutine will be selected giving a change to Vitess to call the - // handler.CloseConnection callback and enforcing the Timeout if configured - go func(rowc chan sql.Row, errc chan error) { + // This goroutine will be select{}ed giving a change to Vitess to call the + // handler.CloseConnection callback and enforcing the timeout if configured + go func() { for { + select { + case <-quit: + return + default: + } row, err := rows.Next() if err != nil { - errc <- err + errchan <- err return } - rowc <- row + rowchan <- row } - }(rowchan, errchan) + }() // Default (big) waitTime is 3600, but it wont matter if there is no timeout // because the loop will just iterate again. If there is a timeout, it will // be enforced to ensure that Vitess has a chance to call Handler.CloseConnection() - waitTime := 3600 * time.Second + waitTime := 1 * time.Second if h.readTimeout > 0 { waitTime = h.readTimeout } +rowLoop: for { if r == nil { r = &sqltypes.Result{Fields: schemaToFields(schema)} @@ -148,14 +155,15 @@ func (h *Handler) ComQuery( select { case err := <-errchan: if err == io.EOF { - goto EndFor + break rowLoop } return err case row := <-rowchan: outputRow, err := rowToSQL(schema, row) if err != nil { - return err + quit <-true + break rowLoop } r.Rows = append(r.Rows, outputRow) @@ -163,13 +171,16 @@ func (h *Handler) ComQuery( case <-time.After(waitTime): if h.readTimeout != 0 && waitTime >= h.readTimeout { // Return so Vitess can call the CloseConnection callback - return RowTimeout.New() + err = RowTimeout.New() + quit <- true + break rowLoop } } } -EndFor: - close(rowchan) - close(errchan) + + if err != nil { + return err + } if err := rows.Close(); err != nil { return err From 6659d13c6dc076569d760c0e0e3da75922438abf Mon Sep 17 00:00:00 2001 From: Juanjo Alvarez Date: Sat, 10 Aug 2019 02:49:17 +0200 Subject: [PATCH 4/6] RowTimeout: Use a single NewTimer instead of After for better memory usage Signed-off-by: Juanjo Alvarez --- server/handler.go | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/server/handler.go b/server/handler.go index 9d14a5fab..bc1a8fbd6 100644 --- a/server/handler.go +++ b/server/handler.go @@ -109,7 +109,7 @@ func (h *Handler) ComQuery( rowchan := make(chan sql.Row) errchan := make(chan error) - quit := make(chan bool, 2) + quit := make(chan struct{}) // This goroutine will be select{}ed giving a change to Vitess to call the // handler.CloseConnection callback and enforcing the timeout if configured @@ -132,10 +132,14 @@ func (h *Handler) ComQuery( // Default (big) waitTime is 3600, but it wont matter if there is no timeout // because the loop will just iterate again. If there is a timeout, it will // be enforced to ensure that Vitess has a chance to call Handler.CloseConnection() - waitTime := 1 * time.Second + totalTime := 0 * time.Second + waitTime := 10 * time.Second + if h.readTimeout > 0 { waitTime = h.readTimeout } + timer := time.NewTimer(waitTime) + rowLoop: for { if r == nil { @@ -162,22 +166,26 @@ rowLoop: case row := <-rowchan: outputRow, err := rowToSQL(schema, row) if err != nil { - quit <-true + close(quit) break rowLoop } r.Rows = append(r.Rows, outputRow) r.RowsAffected++ - case <-time.After(waitTime): - if h.readTimeout != 0 && waitTime >= h.readTimeout { + case <-timer.C: + totalTime += waitTime + if h.readTimeout != 0 && totalTime >= h.readTimeout { // Return so Vitess can call the CloseConnection callback err = RowTimeout.New() - quit <- true + close(quit) break rowLoop } } + timer.Reset(waitTime) } + timer.Stop() + if err != nil { return err } From a37b4433ae2ccca5d4377ff2dacf07f59d07a7f6 Mon Sep 17 00:00:00 2001 From: Juanjo Alvarez Date: Mon, 12 Aug 2019 13:29:42 +0200 Subject: [PATCH 5/6] Restore default timeout and readTimeout values Signed-off-by: Juanjo Alvarez --- server/handler.go | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/server/handler.go b/server/handler.go index bc1a8fbd6..e56d166fe 100644 --- a/server/handler.go +++ b/server/handler.go @@ -129,16 +129,15 @@ func (h *Handler) ComQuery( } }() - // Default (big) waitTime is 3600, but it wont matter if there is no timeout - // because the loop will just iterate again. If there is a timeout, it will + // Default (big) waitTime is one hour if there is not timeout configured, in which case + // it will loop to iterate again. If there is a timeout, it will // be enforced to ensure that Vitess has a chance to call Handler.CloseConnection() - totalTime := 0 * time.Second - waitTime := 10 * time.Second + waitTime := 1 * time.Hour if h.readTimeout > 0 { waitTime = h.readTimeout } - timer := time.NewTimer(waitTime) + timer := time.NewTimer(h.readTimeout) rowLoop: for { @@ -173,8 +172,7 @@ rowLoop: r.Rows = append(r.Rows, outputRow) r.RowsAffected++ case <-timer.C: - totalTime += waitTime - if h.readTimeout != 0 && totalTime >= h.readTimeout { + if h.readTimeout != 0 && waitTime >= h.readTimeout { // Return so Vitess can call the CloseConnection callback err = RowTimeout.New() close(quit) From c11202d7096da738cc3d017e65991ee1593bc946 Mon Sep 17 00:00:00 2001 From: Juanjo Alvarez Date: Mon, 12 Aug 2019 14:49:48 +0200 Subject: [PATCH 6/6] Fixes from review Signed-off-by: Juanjo Alvarez Refactor rowloop select Signed-off-by: Juanjo Alvarez --- server/handler.go | 36 ++++++++++++++++-------------------- server/handler_test.go | 4 ++-- 2 files changed, 18 insertions(+), 22 deletions(-) diff --git a/server/handler.go b/server/handler.go index e56d166fe..98b5ba5ab 100644 --- a/server/handler.go +++ b/server/handler.go @@ -21,8 +21,9 @@ import ( var regKillCmd = regexp.MustCompile(`^kill (?:(query|connection) )?(\d+)$`) -var errConnectionNotFound = errors.NewKind("Connection not found: %c") -var RowTimeout = errors.NewKind("Row read wait bigger than connection timeout") +var errConnectionNotFound = errors.NewKind("connection not found: %c") +// ErrRowTimeout will be returned if the wait for the row is longer than the connection timeout +var ErrRowTimeout = errors.NewKind("row read wait bigger than connection timeout") // TODO parametrize const rowsBatch = 100 @@ -111,7 +112,7 @@ func (h *Handler) ComQuery( errchan := make(chan error) quit := make(chan struct{}) - // This goroutine will be select{}ed giving a change to Vitess to call the + // This goroutine will be select{}ed giving a chance to Vitess to call the // handler.CloseConnection callback and enforcing the timeout if configured go func() { for { @@ -129,15 +130,17 @@ func (h *Handler) ComQuery( } }() - // Default (big) waitTime is one hour if there is not timeout configured, in which case - // it will loop to iterate again. If there is a timeout, it will - // be enforced to ensure that Vitess has a chance to call Handler.CloseConnection() - waitTime := 1 * time.Hour + // Default waitTime is one 1 minute if there is not timeout configured, in which case + // it will loop to iterate again unless the socket died by the OS timeout or other problems. + // If there is a timeout, it will be enforced to ensure that Vitess has a chance to + // call Handler.CloseConnection() + waitTime := 1 * time.Minute if h.readTimeout > 0 { waitTime = h.readTimeout } - timer := time.NewTimer(h.readTimeout) + timer := time.NewTimer(waitTime) + defer timer.Stop() rowLoop: for { @@ -156,38 +159,30 @@ rowLoop: } select { - case err := <-errchan: + case err = <-errchan: if err == io.EOF { break rowLoop } - return err case row := <-rowchan: outputRow, err := rowToSQL(schema, row) if err != nil { close(quit) - break rowLoop + return err } r.Rows = append(r.Rows, outputRow) r.RowsAffected++ case <-timer.C: - if h.readTimeout != 0 && waitTime >= h.readTimeout { + if h.readTimeout != 0 { // Return so Vitess can call the CloseConnection callback - err = RowTimeout.New() close(quit) - break rowLoop + return ErrRowTimeout.New() } } timer.Reset(waitTime) } - timer.Stop() - - if err != nil { - return err - } - if err := rows.Close(); err != nil { return err } @@ -200,6 +195,7 @@ rowLoop: return nil } + close(quit) return callback(r) } diff --git a/server/handler_test.go b/server/handler_test.go index bc9712212..67f44a2bc 100644 --- a/server/handler_test.go +++ b/server/handler_test.go @@ -41,7 +41,7 @@ func setupMemDB(require *require.Assertions) *sqle.Engine { // This session builder is used as dummy mysql Conn is not complete and // causes panic when accessing remote address. func testSessionBuilder(c *mysql.Conn, addr string) sql.Session { - client := "127.0.0.1:34567" + const client = "127.0.0.1:34567" return sql.NewSession(addr, client, c.User, c.ConnectionID) } @@ -272,7 +272,7 @@ func TestHandlerTimeout(t *testing.T) { err := timeOutHandler.ComQuery(connTimeout, "SELECT SLEEP(2)", func(res *sqltypes.Result) error { return nil }) - require.EqualError(err, "Row read wait bigger than connection timeout") + require.EqualError(err, "row read wait bigger than connection timeout") err = timeOutHandler.ComQuery(connTimeout, "SELECT SLEEP(0.5)", func(res *sqltypes.Result) error { return nil