From 87a48c9076f06bfe229fb96b1c6b81b76cbaa7c9 Mon Sep 17 00:00:00 2001 From: Ti Chi Robot Date: Fri, 17 Feb 2023 12:38:01 +0800 Subject: [PATCH] *: add support for -initialize-sql-file on first bootstrap (#35625) (#41530) close pingcap/tidb#35624 --- config/config.go | 3 +++ session/bootstrap.go | 37 ++++++++++++++++++++++++++ session/bootstrap_test.go | 56 +++++++++++++++++++++++++++++++++++++++ session/session.go | 8 +++++- tidb-server/main.go | 18 ++++++++++--- 5 files changed, 118 insertions(+), 4 deletions(-) diff --git a/config/config.go b/config/config.go index d3962e917285b..ce31afa022dda 100644 --- a/config/config.go +++ b/config/config.go @@ -261,6 +261,9 @@ type Config struct { // EnableGlobalKill indicates whether to enable global kill. TrxSummary TrxSummary `toml:"transaction-summary" json:"transaction-summary"` EnableGlobalKill bool `toml:"enable-global-kill" json:"enable-global-kill"` + // InitializeSQLFile is a file that will be executed after first bootstrap only. + // It can be used to set GLOBAL system variable values + InitializeSQLFile string `toml:"initialize-sql-file" json:"initialize-sql-file"` // The following items are deprecated. We need to keep them here temporarily // to support the upgrade process. They can be removed in future. diff --git a/session/bootstrap.go b/session/bootstrap.go index 104e01b230f8b..a83086676bfc7 100644 --- a/session/bootstrap.go +++ b/session/bootstrap.go @@ -23,6 +23,7 @@ import ( "encoding/hex" "flag" "fmt" + "io/ioutil" osuser "os/user" "runtime/debug" "strconv" @@ -525,6 +526,7 @@ func bootstrap(s Session) { if dom.DDL().OwnerManager().IsOwner() { doDDLWorks(s) doDMLWorks(s) + runBootstrapSQLFile = true logutil.BgLogger().Info("bootstrap successful", zap.Duration("take time", time.Since(startTime))) return @@ -743,6 +745,9 @@ var currentBootstrapVersion int64 = version109 // DDL owner key's expired time is ManagerSessionTTL seconds, we should wait the time and give more time to have a chance to finish it. var internalSQLTimeout = owner.ManagerSessionTTL + 15 +// whether to run the sql file in bootstrap. +var runBootstrapSQLFile = false + var ( bootstrapVersion = []func(Session, int64){ upgradeToVer2, @@ -2311,6 +2316,38 @@ func doDDLWorks(s Session) { mustExecute(s, CreateTTLTableStatus) } +// doBootstrapSQLFile executes SQL commands in a file as the last stage of bootstrap. +// It is useful for setting the initial value of GLOBAL variables. +func doBootstrapSQLFile(s Session) { + sqlFile := config.GetGlobalConfig().InitializeSQLFile + ctx := kv.WithInternalSourceType(context.Background(), kv.InternalTxnBootstrap) + if sqlFile == "" { + return + } + logutil.BgLogger().Info("executing -initialize-sql-file", zap.String("file", sqlFile)) + b, err := ioutil.ReadFile(sqlFile) //nolint:gosec + if err != nil { + logutil.BgLogger().Fatal("unable to read InitializeSQLFile", zap.Error(err)) + } + stmts, err := s.Parse(ctx, string(b)) + if err != nil { + logutil.BgLogger().Fatal("unable to parse InitializeSQLFile", zap.Error(err)) + } + for _, stmt := range stmts { + rs, err := s.ExecuteStmt(ctx, stmt) + if err != nil { + logutil.BgLogger().Warn("InitializeSQLFile error", zap.Error(err)) + } + if rs != nil { + // I don't believe we need to drain the result-set in bootstrap mode + // but if required we can do this here in future. + if err := rs.Close(); err != nil { + logutil.BgLogger().Fatal("unable to close result", zap.Error(err)) + } + } + } +} + // inTestSuite checks if we are bootstrapping in the context of tests. // There are some historical differences in behavior between tests and non-tests. func inTestSuite() bool { diff --git a/session/bootstrap_test.go b/session/bootstrap_test.go index 087d5efdbcd09..6cdde0447cf8f 100644 --- a/session/bootstrap_test.go +++ b/session/bootstrap_test.go @@ -17,12 +17,14 @@ package session import ( "context" "fmt" + "os" "strconv" "strings" "testing" "time" "github.com/pingcap/tidb/bindinfo" + "github.com/pingcap/tidb/config" "github.com/pingcap/tidb/domain" "github.com/pingcap/tidb/meta" "github.com/pingcap/tidb/parser/auth" @@ -1047,6 +1049,60 @@ func TestUpgradeToVer85(t *testing.T) { mustExec(t, se, "delete from mysql.bind_info where default_db = 'test'") } +func TestInitializeSQLFile(t *testing.T) { + // We create an initialize-sql-file and then bootstrap the server with it. + // The observed behavior should be that tidb_enable_noop_variables is now + // disabled, and the feature works as expected. + initializeSQLFile, err := os.CreateTemp("", "init.sql") + require.NoError(t, err) + defer func() { + path := initializeSQLFile.Name() + err = initializeSQLFile.Close() + require.NoError(t, err) + err = os.Remove(path) + require.NoError(t, err) + }() + // Implicitly test multi-line init files + _, err = initializeSQLFile.WriteString( + "CREATE DATABASE initsqlfiletest;\n" + + "SET GLOBAL tidb_enable_noop_variables = OFF;\n") + require.NoError(t, err) + + // Create a mock store + // Set the config parameter for initialize sql file + store, err := mockstore.NewMockStore() + require.NoError(t, err) + config.GetGlobalConfig().InitializeSQLFile = initializeSQLFile.Name() + defer func() { + require.NoError(t, store.Close()) + config.GetGlobalConfig().InitializeSQLFile = "" + }() + + // Bootstrap with the InitializeSQLFile config option + dom, err := BootstrapSession(store) + require.NoError(t, err) + defer dom.Close() + se := createSessionAndSetID(t, store) + ctx := context.Background() + r, err := exec(se, `SHOW VARIABLES LIKE 'query_cache_type'`) + require.NoError(t, err) + req := r.NewChunk(nil) + err = r.Next(ctx, req) + require.NoError(t, err) + require.Equal(t, 0, req.NumRows()) // not shown in noopvariables mode + require.NoError(t, r.Close()) + + r, err = exec(se, `SHOW VARIABLES LIKE 'tidb_enable_noop_variables'`) + require.NoError(t, err) + req = r.NewChunk(nil) + err = r.Next(ctx, req) + require.NoError(t, err) + require.Equal(t, 1, req.NumRows()) + row := req.GetRow(0) + require.Equal(t, []byte("OFF"), row.GetBytes(1)) + require.NoError(t, r.Close()) +} + func TestTiDBEnablePagingVariable(t *testing.T) { store, dom := createStoreAndBootstrap(t) se := createSessionAndSetID(t, store) diff --git a/session/session.go b/session/session.go index e22fd249ef73c..ca12271364b9b 100644 --- a/session/session.go +++ b/session/session.go @@ -3359,7 +3359,13 @@ func BootstrapSession(store kv.Storage) (*domain.Domain, error) { // setup historical stats worker dom.SetupHistoricalStatsWorker(ses[9]) dom.StartHistoricalStatsWorker() - + if runBootstrapSQLFile { + pm := &privileges.UserPrivileges{ + Handle: dom.PrivilegeHandle(), + } + privilege.BindPrivilegeManager(ses[9], pm) + doBootstrapSQLFile(ses[9]) + } // A sub context for update table stats, and other contexts for concurrent stats loading. cnt := 1 + concurrency syncStatsCtxs, err := createSessions(store, cnt) diff --git a/tidb-server/main.go b/tidb-server/main.go index ac55fa5847106..921e2fed4ab6b 100644 --- a/tidb-server/main.go +++ b/tidb-server/main.go @@ -121,6 +121,7 @@ const ( nmInitializeSecure = "initialize-secure" nmInitializeInsecure = "initialize-insecure" + nmInitializeSQLFile = "initialize-sql-file" nmDisconnectOnExpiredPassword = "disconnect-on-expired-password" ) @@ -165,9 +166,10 @@ var ( proxyProtocolNetworks = flag.String(nmProxyProtocolNetworks, "", "proxy protocol networks allowed IP or *, empty mean disable proxy protocol support") proxyProtocolHeaderTimeout = flag.Uint(nmProxyProtocolHeaderTimeout, 5, "proxy protocol header read timeout, unit is second. (Deprecated: as proxy protocol using lazy mode, header read timeout no longer used)") - // Security + // Bootstrap and security initializeSecure = flagBoolean(nmInitializeSecure, false, "bootstrap tidb-server in secure mode") initializeInsecure = flagBoolean(nmInitializeInsecure, true, "bootstrap tidb-server in insecure mode") + initializeSQLFile = flag.String(nmInitializeSQLFile, "", "SQL file to execute on first bootstrap") disconnectOnExpiredPassword = flagBoolean(nmDisconnectOnExpiredPassword, true, "the server disconnects the client when the password is expired") ) @@ -528,7 +530,7 @@ func overrideConfig(cfg *config.Config) { // Sanity check: can't specify both options if actualFlags[nmInitializeSecure] && actualFlags[nmInitializeInsecure] { - err = fmt.Errorf("the options --initialize-insecure and --initialize-secure are mutually exclusive") + err = fmt.Errorf("the options -initialize-insecure and -initialize-secure are mutually exclusive") terror.MustNil(err) } // The option --initialize-secure=true ensures that a secure bootstrap is used. @@ -547,9 +549,19 @@ func overrideConfig(cfg *config.Config) { // which is not supported on windows. Only the insecure bootstrap // method is supported. if runtime.GOOS == "windows" && cfg.Security.SecureBootstrap { - err = fmt.Errorf("the option --initialize-secure is not supported on Windows") + err = fmt.Errorf("the option -initialize-secure is not supported on Windows") terror.MustNil(err) } + // Initialize SQL File is used to run a set of SQL statements after first bootstrap. + // It is important in the use case that you want to set GLOBAL variables, which + // are persisted to the cluster and not read from a config file. + if actualFlags[nmInitializeSQLFile] { + if _, err := os.Stat(*initializeSQLFile); err != nil { + err = fmt.Errorf("can not access -initialize-sql-file %s", *initializeSQLFile) + terror.MustNil(err) + } + cfg.InitializeSQLFile = *initializeSQLFile + } } func setVersions() {