OnlineDDL: request_context/migration_context

go/cmd/vtctld/schema.go

@@ -72,7 +72,7 @@ func initSchema() {
  err = schemamanager.Run(
  ctx,
  controller,
- schemamanager.NewTabletExecutor(wr, *schemaChangeReplicasTimeout),
+ schemamanager.NewTabletExecutor("vtctld/schema", wr, *schemaChangeReplicasTimeout),
  )
  if err != nil {
  log.Errorf("Schema change failed, error: %v", err)

go/vt/schema/online_ddl.go

@@ -89,17 +89,18 @@ const (
 
 // OnlineDDL encapsulates the relevant information in an online schema change request
 type OnlineDDL struct {
- Keyspace string `json:"keyspace,omitempty"`
- Table string `json:"table,omitempty"`
- Schema string `json:"schema,omitempty"`
- SQL string `json:"sql,omitempty"`
- UUID string `json:"uuid,omitempty"`
- Strategy DDLStrategy `json:"strategy,omitempty"`
- Options string `json:"options,omitempty"`
- RequestTime int64 `json:"time_created,omitempty"`
- Status OnlineDDLStatus `json:"status,omitempty"`
- TabletAlias string `json:"tablet,omitempty"`
- Retries int64 `json:"retries,omitempty"`
+ Keyspace string `json:"keyspace,omitempty"`
+ Table string `json:"table,omitempty"`
+ Schema string `json:"schema,omitempty"`
+ SQL string `json:"sql,omitempty"`
+ UUID string `json:"uuid,omitempty"`
+ Strategy DDLStrategy `json:"strategy,omitempty"`
+ Options string `json:"options,omitempty"`
+ RequestTime int64 `json:"time_created,omitempty"`
+ RequestContext string `json:"context,omitempty"`
+ Status OnlineDDLStatus `json:"status,omitempty"`
+ TabletAlias string `json:"tablet,omitempty"`
+ Retries int64 `json:"retries,omitempty"`
 }
 
 // ParseDDLStrategy validates the given ddl_strategy variable value , and parses the strategy and options parts.
@@ -139,20 +140,21 @@ func ReadTopo(ctx context.Context, conn topo.Conn, entryPath string) (*OnlineDDL
 }
 
 // NewOnlineDDL creates a schema change request with self generated UUID and RequestTime
-func NewOnlineDDL(keyspace string, table string, sql string, strategy DDLStrategy, options string) (*OnlineDDL, error) {
+func NewOnlineDDL(keyspace string, table string, sql string, strategy DDLStrategy, options string, requestContext string) (*OnlineDDL, error) {
  u, err := CreateUUID()
  if err != nil {
  return nil, err
  }
  return &OnlineDDL{
- Keyspace: keyspace,
- Table: table,
- SQL: sql,
- UUID: u,
- Strategy: strategy,
- Options: options,
- RequestTime: time.Now().UnixNano(),
- Status: OnlineDDLStatusRequested,
+ Keyspace: keyspace,
+ Table: table,
+ SQL: sql,
+ UUID: u,
+ Strategy: strategy,
+ Options: options,
+ RequestTime: time.Now().UnixNano(),
+ RequestContext: requestContext,
+ Status: OnlineDDLStatusRequested,
  }, nil
 }
 

go/vt/schemamanager/schemamanager_test.go

@@ -94,7 +94,7 @@ func TestSchemaManagerExecutorOpenFail(t *testing.T) {
  []string{"create table test_table (pk int);"}, false, false, false)
  controller.SetKeyspace("unknown_keyspace")
  wr := wrangler.New(logutil.NewConsoleLogger(), newFakeTopo(t), newFakeTabletManagerClient())
- executor := NewTabletExecutor(wr, testWaitReplicasTimeout)
+ executor := NewTabletExecutor("TestSchemaManagerExecutorOpenFail", wr, testWaitReplicasTimeout)
  ctx := context.Background()
 
  err := Run(ctx, controller, executor)
@@ -107,7 +107,7 @@ func TestSchemaManagerExecutorExecuteFail(t *testing.T) {
  controller := newFakeController(
  []string{"create table test_table (pk int);"}, false, false, false)
  wr := wrangler.New(logutil.NewConsoleLogger(), newFakeTopo(t), newFakeTabletManagerClient())
- executor := NewTabletExecutor(wr, testWaitReplicasTimeout)
+ executor := NewTabletExecutor("TestSchemaManagerExecutorExecuteFail", wr, testWaitReplicasTimeout)
  ctx := context.Background()
 
  err := Run(ctx, controller, executor)
@@ -138,7 +138,7 @@ func TestSchemaManagerRun(t *testing.T) {
  fakeTmc.AddSchemaDefinition("vt_test_keyspace", &tabletmanagerdatapb.SchemaDefinition{})
 
  wr := wrangler.New(logutil.NewConsoleLogger(), newFakeTopo(t), fakeTmc)
- executor := NewTabletExecutor(wr, testWaitReplicasTimeout)
+ executor := NewTabletExecutor("TestSchemaManagerRun", wr, testWaitReplicasTimeout)
 
  ctx := context.Background()
  err := Run(ctx, controller, executor)
@@ -184,7 +184,7 @@ func TestSchemaManagerExecutorFail(t *testing.T) {
  fakeTmc.AddSchemaDefinition("vt_test_keyspace", &tabletmanagerdatapb.SchemaDefinition{})
  fakeTmc.EnableExecuteFetchAsDbaError = true
  wr := wrangler.New(logutil.NewConsoleLogger(), newFakeTopo(t), fakeTmc)
- executor := NewTabletExecutor(wr, testWaitReplicasTimeout)
+ executor := NewTabletExecutor("TestSchemaManagerExecutorFail", wr, testWaitReplicasTimeout)
 
  ctx := context.Background()
  err := Run(ctx, controller, executor)
@@ -229,7 +229,7 @@ func TestSchemaManagerRegisterControllerFactory(t *testing.T) {
 
 func newFakeExecutor(t *testing.T) *TabletExecutor {
  wr := wrangler.New(logutil.NewConsoleLogger(), newFakeTopo(t), newFakeTabletManagerClient())
- return NewTabletExecutor(wr, testWaitReplicasTimeout)
+ return NewTabletExecutor("newFakeExecutor", wr, testWaitReplicasTimeout)
 }
 
 func newFakeTabletManagerClient() *fakeTabletManagerClient {

go/vt/schemamanager/tablet_executor.go

@@ -34,6 +34,7 @@ import (
 
 // TabletExecutor applies schema changes to all tablets.
 type TabletExecutor struct {
+ requestContext string
  wr *wrangler.Wrangler
  tablets []*topodatapb.Tablet
  isClosed bool
@@ -44,12 +45,13 @@ type TabletExecutor struct {
 }
 
 // NewTabletExecutor creates a new TabletExecutor instance
-func NewTabletExecutor(wr *wrangler.Wrangler, waitReplicasTimeout time.Duration) *TabletExecutor {
+func NewTabletExecutor(requestContext string, wr *wrangler.Wrangler, waitReplicasTimeout time.Duration) *TabletExecutor {
  return &TabletExecutor{
  wr: wr,
  isClosed: true,
  allowBigSchemaChange: false,
  waitReplicasTimeout: waitReplicasTimeout,
+ requestContext: requestContext,
  }
 }
 
@@ -283,7 +285,7 @@ func (exec *TabletExecutor) executeOnlineDDL(
  execResult.ExecutorErr = "Not an online DDL strategy"
  return
  }
- onlineDDL, err := schema.NewOnlineDDL(exec.keyspace, tableName, sql, strategy, options)
+ onlineDDL, err := schema.NewOnlineDDL(exec.keyspace, tableName, sql, strategy, options, exec.requestContext)
  if err != nil {
  execResult.ExecutorErr = err.Error()
  return

go/vt/schemamanager/tablet_executor_test.go

@@ -72,7 +72,7 @@ func TestTabletExecutorOpenWithEmptyMasterAlias(t *testing.T) {
  if err := wr.InitTablet(ctx, tablet, false /*allowMasterOverride*/, true /*createShardAndKeyspace*/, false /*allowUpdate*/); err != nil {
  t.Fatalf("InitTablet failed: %v", err)
  }
- executor := NewTabletExecutor(wr, testWaitReplicasTimeout)
+ executor := NewTabletExecutor("TestTabletExecutorOpenWithEmptyMasterAlias", wr, testWaitReplicasTimeout)
  if err := executor.Open(ctx, "test_keyspace"); err == nil || !strings.Contains(err.Error(), "does not have a master") {
  t.Fatalf("executor.Open() = '%v', want error", err)
  }
@@ -106,7 +106,7 @@ func TestTabletExecutorValidate(t *testing.T) {
  })
 
  wr := wrangler.New(logutil.NewConsoleLogger(), newFakeTopo(t), fakeTmc)
- executor := NewTabletExecutor(wr, testWaitReplicasTimeout)
+ executor := NewTabletExecutor("TestTabletExecutorValidate", wr, testWaitReplicasTimeout)
  ctx := context.Background()
 
  sqls := []string{
@@ -196,7 +196,7 @@ func TestTabletExecutorDML(t *testing.T) {
  })
 
  wr := wrangler.New(logutil.NewConsoleLogger(), newFakeTopo(t), fakeTmc)
- executor := NewTabletExecutor(wr, testWaitReplicasTimeout)
+ executor := NewTabletExecutor("TestTabletExecutorDML", wr, testWaitReplicasTimeout)
  ctx := context.Background()
 
  executor.Open(ctx, "unsharded_keyspace")

go/vt/vtctl/vtctl.go

@@ -2472,8 +2472,12 @@ func commandApplySchema(ctx context.Context, wr *wrangler.Wrangler, subFlags *fl
  if err != nil {
  return err
  }
-
- executor := schemamanager.NewTabletExecutor(wr, *waitReplicasTimeout)
+ executionUUID, err := schema.CreateUUID()
+ if err != nil {
+ return err
+ }
+ requestContext := fmt.Sprintf("vtctl:%s", executionUUID)
+ executor := schemamanager.NewTabletExecutor(requestContext, wr, *waitReplicasTimeout)
  if *allowLongUnavailability {
  executor.AllowBigSchemaChange()
  }

go/vt/vtctld/api.go

@@ -32,6 +32,7 @@ import (
  "vitess.io/vitess/go/netutil"
  "vitess.io/vitess/go/vt/log"
  "vitess.io/vitess/go/vt/logutil"
+ "vitess.io/vitess/go/vt/schema"
  "vitess.io/vitess/go/vt/schemamanager"
  "vitess.io/vitess/go/vt/topo"
  "vitess.io/vitess/go/vt/topo/topoproto"
@@ -627,9 +628,12 @@ func initAPI(ctx context.Context, ts *topo.Server, actions *ActionRepository, re
  })
  wr := wrangler.New(logger, ts, tmClient)
 
- executor := schemamanager.NewTabletExecutor(
- wr, time.Duration(req.ReplicaTimeoutSeconds)*time.Second,
- )
+ apiCallUUID, err := schema.CreateUUID()
+ if err != nil {
+ return err
+ }
+ requestContext := fmt.Sprintf("vtctld/api:%s", apiCallUUID)
+ executor := schemamanager.NewTabletExecutor(requestContext, wr, time.Duration(req.ReplicaTimeoutSeconds)*time.Second)
 
  return schemamanager.Run(ctx,
  schemamanager.NewUIController(req.SQL, req.Keyspace, w), executor)

go/vt/vtctld/schema.go

@@ -95,9 +95,10 @@ func reviewMigrationRequest(ctx context.Context, ts *topo.Server, tmClient tmcli
  strategy,
  options,
  requested_timestamp,
+ migration_context,
  migration_status
  ) VALUES (
- %a, %a, %a, %a, %a, %a, %a, %a, FROM_UNIXTIME(%a), %a
+ %a, %a, %a, %a, %a, %a, %a, %a, FROM_UNIXTIME(%a), %a, %a
  )`
  parsed := sqlparser.BuildParsedQuery(sqlInsertSchemaMigration, "_vt",
  ":migration_uuid",
@@ -109,6 +110,7 @@ func reviewMigrationRequest(ctx context.Context, ts *topo.Server, tmClient tmcli
  ":strategy",
  ":options",
  ":requested_timestamp",
+ ":migration_context",
  ":migration_status",
  )
  bindVars := map[string]*querypb.BindVariable{
@@ -121,6 +123,7 @@ func reviewMigrationRequest(ctx context.Context, ts *topo.Server, tmClient tmcli
  "strategy": sqltypes.StringBindVariable(string(onlineDDL.Strategy)),
  "options": sqltypes.StringBindVariable(onlineDDL.Options),
  "requested_timestamp": sqltypes.Int64BindVariable(onlineDDL.RequestTimeSeconds()),
+ "migration_context": sqltypes.StringBindVariable(onlineDDL.RequestContext),
  "migration_status": sqltypes.StringBindVariable(string(onlineDDL.Status)),
  }
 

go/vt/vtgate/engine/online_ddl.go

@@ -52,24 +52,24 @@ func (v *OnlineDDL) description() PrimitiveDescription {
  }
 }
 
-//RouteType implements the Primitive interface
+// RouteType implements the Primitive interface
 func (v *OnlineDDL) RouteType() string {
  return "OnlineDDL"
 }
 
-//GetKeyspaceName implements the Primitive interface
+// GetKeyspaceName implements the Primitive interface
 func (v *OnlineDDL) GetKeyspaceName() string {
  return v.Keyspace.Name
 }
 
-//GetTableName implements the Primitive interface
+// GetTableName implements the Primitive interface
 func (v *OnlineDDL) GetTableName() string {
  return v.DDL.GetTable().Name.String()
 }
 
-//Execute implements the Primitive interface
+// Execute implements the Primitive interface
 func (v *OnlineDDL) Execute(vcursor VCursor, bindVars map[string]*query.BindVariable, wantfields bool) (result *sqltypes.Result, err error) {
- onlineDDL, err := schema.NewOnlineDDL(v.GetKeyspaceName(), v.GetTableName(), v.SQL, v.Strategy, v.Options)
+ onlineDDL, err := schema.NewOnlineDDL(v.GetKeyspaceName(), v.GetTableName(), v.SQL, v.Strategy, v.Options, "vtgate")
  if err != nil {
  return result, err
  }

go/vt/vttablet/onlineddl/executor.go

@@ -80,9 +80,10 @@ var vexecInsertTemplates = []string{
  strategy,
  options,
  requested_timestamp,
+ migration_context,
  migration_status
  ) VALUES (
- 'val', 'val', 'val', 'val', 'val', 'val', 'val', 'val', FROM_UNIXTIME(0), 'val'
+ 'val', 'val', 'val', 'val', 'val', 'val', 'val', 'val', FROM_UNIXTIME(0), 'val', 'val'
  )`,
 }
 

go/vt/vttablet/onlineddl/schema.go

@@ -28,7 +28,7 @@ const (
  id bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  migration_uuid varchar(64) NOT NULL,
  keyspace varchar(256) NOT NULL,
- shard varchar(256) NOT NULL,
+ shard varchar(255) NOT NULL,
  mysql_schema varchar(128) NOT NULL,
  mysql_table varchar(128) NOT NULL,
  migration_statement text NOT NULL,
@@ -56,6 +56,7 @@ const (
  alterSchemaMigrationsTableTabletFailure = "ALTER TABLE %s.schema_migrations add column tablet_failure tinyint unsigned NOT NULL DEFAULT 0"
  alterSchemaMigrationsTableTabletFailureIndex = "ALTER TABLE %s.schema_migrations add KEY tablet_failure_idx (tablet_failure, migration_status, retries)"
  alterSchemaMigrationsTableProgress = "ALTER TABLE %s.schema_migrations add column progress float NOT NULL DEFAULT 0"
+ alterSchemaMigrationsTableContext = "ALTER TABLE %s.schema_migrations add column migration_context varchar(1024) NOT NULL DEFAULT ''"
 
  sqlScheduleSingleMigration = `UPDATE %s.schema_migrations
  SET
@@ -238,4 +239,5 @@ var applyDDL = []string{
  fmt.Sprintf(alterSchemaMigrationsTableTabletFailure, "_vt"),
  fmt.Sprintf(alterSchemaMigrationsTableTabletFailureIndex, "_vt"),
  fmt.Sprintf(alterSchemaMigrationsTableProgress, "_vt"),
+ fmt.Sprintf(alterSchemaMigrationsTableContext, "_vt"),
 }

go/vt/wrangler/vexec_plan.go

@@ -136,9 +136,10 @@ func newSchemaMigrationsPlanner(vx *vexec) vexecPlanner {
  strategy,
  options,
  requested_timestamp,
+ migration_context,
  migration_status
  ) VALUES (
- 'val', 'val', 'val', 'val', 'val', 'val', 'val', 'val', FROM_UNIXTIME(0), 'val'
+ 'val', 'val', 'val', 'val', 'val', 'val', 'val', 'val', FROM_UNIXTIME(0), 'val', 'val'
  )`,
  },
  },