func commandVtGateExecuteShards(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
server := subFlags.String("server", "", "VtGate server to connect to")
bindVariables := newBindvars(subFlags)
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vtgate client")
tabletType := subFlags.String("tablet_type", "master", "tablet type to query")
keyspace := subFlags.String("keyspace", "", "keyspace to send query to")
shardsStr := subFlags.String("shards", "", "comma-separated list of shards to send query to")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 1 {
return fmt.Errorf("the <sql> argument is required for the VtGateExecuteShards command")
}
t, err := parseTabletType(*tabletType, []pb.TabletType{pb.TabletType_MASTER, pb.TabletType_REPLICA, pb.TabletType_RDONLY})
if err != nil {
return err
}
var shards []string
if *shardsStr != "" {
shards = strings.Split(*shardsStr, ",")
}
vtgateConn, err := vtgateconn.Dial(ctx, *server, *connectTimeout)
if err != nil {
return fmt.Errorf("error connecting to vtgate '%v': %v", *server, err)
}
defer vtgateConn.Close()
qr, err := vtgateConn.ExecuteShards(ctx, subFlags.Arg(0), *keyspace, shards, *bindVariables, t)
if err != nil {
return fmt.Errorf("Execute failed: %v", err)
}
return printJSON(wr, qr)
}
func commandVtTabletBegin(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vttablet client")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 1 {
return fmt.Errorf("the <tablet_alias> argument is required for the VtTabletBegin command")
}
tabletAlias, err := topoproto.ParseTabletAlias(subFlags.Arg(0))
if err != nil {
return err
}
tabletInfo, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return err
}
conn, err := tabletconn.GetDialer()(ctx, tabletInfo.Tablet, *connectTimeout)
if err != nil {
return fmt.Errorf("cannot connect to tablet %v: %v", tabletAlias, err)
}
defer conn.Close()
transactionID, err := conn.Begin(ctx)
if err != nil {
return fmt.Errorf("Begin failed: %v", err)
}
result := map[string]int64{
"transaction_id": transactionID,
}
return printJSON(wr.Logger(), result)
}
func commandVtGateSplitQuery(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
server := subFlags.String("server", "", "VtGate server to connect to")
bindVariables := newBindvars(subFlags)
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vtgate client")
splitColumn := subFlags.String("split_column", "", "force the use of this column to split the query")
splitCount := subFlags.Int("split_count", 16, "number of splits to generate")
keyspace := subFlags.String("keyspace", "", "keyspace to send query to")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 1 {
return fmt.Errorf("the <sql> argument is required for the VtGateSplitQuery command")
}
vtgateConn, err := vtgateconn.Dial(ctx, *server, *connectTimeout, "")
if err != nil {
return fmt.Errorf("error connecting to vtgate '%v': %v", *server, err)
}
defer vtgateConn.Close()
r, err := vtgateConn.SplitQuery(ctx, *keyspace, subFlags.Arg(0), *bindVariables, *splitColumn, int64(*splitCount))
if err != nil {
return fmt.Errorf("SplitQuery failed: %v", err)
}
return printJSON(wr.Logger(), r)
}
func commandVtGateSplitQuery(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
server := subFlags.String("server", "", "VtGate server to connect to")
bindVariables := newBindvars(subFlags)
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vtgate client")
splitCount := subFlags.Int("split_count", 16, "number of splits to generate")
keyspace := subFlags.String("keyspace", "", "keyspace to send query to")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 1 {
return fmt.Errorf("the <sql> argument is required for the VtGateSplitQuery command")
}
vtgateConn, err := vtgateconn.Dial(ctx, *server, *connectTimeout)
if err != nil {
return fmt.Errorf("error connecting to vtgate '%v': %v", *server, err)
}
defer vtgateConn.Close()
r, err := vtgateConn.SplitQuery(ctx, *keyspace, tproto.BoundQuery{
Sql: subFlags.Arg(0),
BindVariables: *bindVariables,
}, *splitCount)
if err != nil {
return fmt.Errorf("SplitQuery failed: %v", err)
}
wr.Logger().Printf("%v\n", jscfg.ToJSON(r))
return nil
}
func commandEmergencyReparentShard(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
waitSlaveTimeout := subFlags.Duration("wait_slave_timeout", 30*time.Second, "time to wait for slaves to catch up in reparenting")
keyspaceShard := subFlags.String("keyspace_shard", "", "keyspace/shard of the shard that needs to be reparented")
newMaster := subFlags.String("new_master", "", "alias of a tablet that should be the new master")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() == 2 {
// Legacy syntax: "<keyspace/shard> <tablet alias>".
if *newMaster != "" {
return fmt.Errorf("cannot use legacy syntax and flag -new_master for action EmergencyReparentShard at the same time")
}
*keyspaceShard = subFlags.Arg(0)
*newMaster = subFlags.Arg(1)
} else if subFlags.NArg() != 0 {
return fmt.Errorf("action EmergencyReparentShard requires -keyspace_shard=<keyspace/shard> -new_master=<tablet alias>")
}
keyspace, shard, err := topoproto.ParseKeyspaceShard(*keyspaceShard)
if err != nil {
return err
}
tabletAlias, err := topoproto.ParseTabletAlias(*newMaster)
if err != nil {
return err
}
return wr.EmergencyReparentShard(ctx, keyspace, shard, tabletAlias, *waitSlaveTimeout)
}
func commandVtTabletRollback(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vttablet client")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 2 {
return fmt.Errorf("the <tablet_alias> and <transaction_id> arguments are required for the VtTabletRollback command")
}
transactionID, err := strconv.ParseInt(subFlags.Arg(1), 10, 64)
if err != nil {
return err
}
tabletAlias, err := topoproto.ParseTabletAlias(subFlags.Arg(0))
if err != nil {
return err
}
tabletInfo, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return err
}
conn, err := tabletconn.GetDialer()(tabletInfo.Tablet, *connectTimeout)
if err != nil {
return fmt.Errorf("cannot connect to tablet %v: %v", tabletAlias, err)
}
defer conn.Close(ctx)
return conn.Rollback(ctx, &querypb.Target{
Keyspace: tabletInfo.Tablet.Keyspace,
Shard: tabletInfo.Tablet.Shard,
TabletType: tabletInfo.Tablet.Type,
}, transactionID)
}
func commandVtGateExecute(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
server := subFlags.String("server", "", "VtGate server to connect to")
bindVariables := newBindvars(subFlags)
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vtgate client")
tabletType := subFlags.String("tablet_type", "master", "tablet type to query")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 1 {
return fmt.Errorf("the <sql> argument is required for the VtGateExecute command")
}
t, err := parseTabletType(*tabletType, []topo.TabletType{topo.TYPE_MASTER, topo.TYPE_REPLICA, topo.TYPE_RDONLY})
if err != nil {
return err
}
vtgateConn, err := vtgateconn.Dial(ctx, *server, *connectTimeout)
if err != nil {
return fmt.Errorf("error connecting to vtgate '%v': %v", *server, err)
}
defer vtgateConn.Close()
qr, err := vtgateConn.Execute(ctx, subFlags.Arg(0), *bindVariables, t)
if err != nil {
return fmt.Errorf("Execute failed: %v", err)
}
wr.Logger().Printf("%v\n", jscfg.ToJSON(qr))
return nil
}
// ApplyWithError populates the flag given the flag set and environment
func (f DurationFlag) ApplyWithError(set *flag.FlagSet) error {
if f.EnvVar != "" {
for _, envVar := range strings.Split(f.EnvVar, ",") {
envVar = strings.TrimSpace(envVar)
if envVal, ok := syscall.Getenv(envVar); ok {
envValDuration, err := time.ParseDuration(envVal)
if err != nil {
return fmt.Errorf("could not parse %s as duration for flag %s: %s", envVal, f.Name, err)
}
f.Value = envValDuration
break
}
}
}
eachName(f.Name, func(name string) {
if f.Destination != nil {
set.DurationVar(f.Destination, name, f.Value, f.Usage)
return
}
set.Duration(name, f.Value, f.Usage)
})
return nil
}
func commandVtGateExecute(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
server := subFlags.String("server", "", "VtGate server to connect to")
bindVariables := newBindvars(subFlags)
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vtgate client")
tabletType := subFlags.String("tablet_type", "master", "tablet type to query")
json := subFlags.Bool("json", false, "Output JSON instead of human-readable table")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 1 {
return fmt.Errorf("the <sql> argument is required for the VtGateExecute command")
}
t, err := parseTabletType(*tabletType, []topodatapb.TabletType{topodatapb.TabletType_MASTER, topodatapb.TabletType_REPLICA, topodatapb.TabletType_RDONLY})
if err != nil {
return err
}
vtgateConn, err := vtgateconn.Dial(ctx, *server, *connectTimeout)
if err != nil {
return fmt.Errorf("error connecting to vtgate '%v': %v", *server, err)
}
defer vtgateConn.Close()
qr, err := vtgateConn.Execute(ctx, subFlags.Arg(0), *bindVariables, t)
if err != nil {
return fmt.Errorf("Execute failed: %v", err)
}
if *json {
return printJSON(wr.Logger(), qr)
}
printQueryResult(loggerWriter{wr.Logger()}, qr)
return nil
}
func startCmd(mysqld *mysqlctl.Mysqld, subFlags *flag.FlagSet, args []string) {
waitTime := subFlags.Duration("wait_time", mysqlctl.MysqlWaitTime, "how long to wait for startup")
subFlags.Parse(args)
if err := mysqld.Start(*waitTime); err != nil {
log.Fatalf("failed start mysql: %v", err)
}
}
func shutdownCmd(mysqld *mysqlctl.Mysqld, subFlags *flag.FlagSet, args []string) {
waitTime := subFlags.Duration("wait-time", mysqlctl.MysqlWaitTime, "how long to wait for shutdown")
subFlags.Parse(args)
if mysqlErr := mysqlctl.Shutdown(mysqld, true, *waitTime); mysqlErr != nil {
relog.Fatal("failed shutdown mysql: %v", mysqlErr)
}
}
func initCmd(mysqld *mysqlctl.Mysqld, subFlags *flag.FlagSet, args []string) {
waitTime := subFlags.Duration("wait-time", mysqlctl.MysqlWaitTime, "how long to wait for startup")
subFlags.Parse(args)
if err := mysqlctl.Init(mysqld, *waitTime); err != nil {
relog.Fatal("failed init mysql: %v", err)
}
}
func initCmd(mysqld *mysqlctl.Mysqld, subFlags *flag.FlagSet, args []string) {
waitTime := subFlags.Duration("wait_time", mysqlctl.MysqlWaitTime, "how long to wait for startup")
bootstrapArchive := subFlags.String("bootstrap_archive", "mysql-db-dir.tbz", "name of bootstrap archive within vitess/data/bootstrap directory")
skipSchema := subFlags.Bool("skip_schema", false, "don't apply initial schema")
subFlags.Parse(args)
if err := mysqld.Init(*waitTime, *bootstrapArchive, *skipSchema); err != nil {
log.Fatalf("failed init mysql: %v", err)
}
}
func startCmd(mysqld *mysqlctl.Mysqld, subFlags *flag.FlagSet, args []string) error {
waitTime := subFlags.Duration("wait_time", 2*time.Minute, "how long to wait for startup")
subFlags.Parse(args)
ctx, cancel := context.WithTimeout(context.Background(), *waitTime)
defer cancel()
if err := mysqld.Start(ctx); err != nil {
return fmt.Errorf("failed start mysql: %v", err)
}
return nil
}
func initCmd(mysqld *mysqlctl.Mysqld, subFlags *flag.FlagSet, args []string) error {
waitTime := subFlags.Duration("wait_time", 2*time.Minute, "how long to wait for startup")
initDBSQLFile := subFlags.String("init_db_sql_file", "", "path to .sql file to run after mysql_install_db")
subFlags.Parse(args)
ctx, cancel := context.WithTimeout(context.Background(), *waitTime)
defer cancel()
if err := mysqld.Init(ctx, *initDBSQLFile); err != nil {
return fmt.Errorf("failed init mysql: %v", err)
}
return nil
}
func teardownCmd(mysqld *mysqlctl.Mysqld, subFlags *flag.FlagSet, args []string) error {
waitTime := subFlags.Duration("wait_time", 2*time.Minute, "how long to wait for shutdown")
force := subFlags.Bool("force", false, "will remove the root directory even if mysqld shutdown fails")
subFlags.Parse(args)
ctx, cancel := context.WithTimeout(context.Background(), *waitTime)
defer cancel()
if err := mysqld.Teardown(ctx, *force); err != nil {
return fmt.Errorf("failed teardown mysql (forced? %v): %v", *force, err)
}
return nil
}
func initCmd(mysqld *mysqlctl.Mysqld, subFlags *flag.FlagSet, args []string) error {
waitTime := subFlags.Duration("wait_time", 2*time.Minute, "how long to wait for startup")
bootstrapArchive := subFlags.String("bootstrap_archive", "mysql-db-dir.tbz", "name of bootstrap archive within vitess/data/bootstrap directory")
subFlags.Parse(args)
ctx, cancel := context.WithTimeout(context.Background(), *waitTime)
defer cancel()
if err := mysqld.Init(ctx, *bootstrapArchive); err != nil {
return fmt.Errorf("failed init mysql: %v", err)
}
return nil
}
func commandVtGateExecuteKeyspaceIds(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
server := subFlags.String("server", "", "VtGate server to connect to")
bindVariables := newBindvars(subFlags)
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vtgate client")
tabletType := subFlags.String("tablet_type", "master", "tablet type to query")
keyspace := subFlags.String("keyspace", "", "keyspace to send query to")
keyspaceIDsStr := subFlags.String("keyspace_ids", "", "comma-separated list of keyspace ids (in hex) that will map into shards to send query to")
options := subFlags.String("options", "", "execute options values as a text encoded proto of the ExecuteOptions structure")
json := subFlags.Bool("json", false, "Output JSON instead of human-readable table")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 1 {
return fmt.Errorf("the <sql> argument is required for the VtGateExecuteKeyspaceIds command")
}
t, err := parseTabletType(*tabletType, []topodatapb.TabletType{topodatapb.TabletType_MASTER, topodatapb.TabletType_REPLICA, topodatapb.TabletType_RDONLY})
if err != nil {
return err
}
var keyspaceIDs [][]byte
if *keyspaceIDsStr != "" {
keyspaceIDHexs := strings.Split(*keyspaceIDsStr, ",")
keyspaceIDs = make([][]byte, len(keyspaceIDHexs))
for i, keyspaceIDHex := range keyspaceIDHexs {
keyspaceIDs[i], err = hex.DecodeString(keyspaceIDHex)
if err != nil {
return fmt.Errorf("cannot hex-decode value %v '%v': %v", i, keyspaceIDHex, err)
}
}
}
executeOptions, err := parseExecuteOptions(*options)
if err != nil {
return err
}
vtgateConn, err := vtgateconn.Dial(ctx, *server, *connectTimeout, "")
if err != nil {
return fmt.Errorf("error connecting to vtgate '%v': %v", *server, err)
}
defer vtgateConn.Close()
qr, err := vtgateConn.ExecuteKeyspaceIds(ctx, subFlags.Arg(0), *keyspace, keyspaceIDs, *bindVariables, t, executeOptions)
if err != nil {
return fmt.Errorf("Execute failed: %v", err)
}
if *json {
return printJSON(wr.Logger(), qr)
}
printQueryResult(loggerWriter{wr.Logger()}, qr)
return nil
}
func (f DurationFlag) Apply(set *flag.FlagSet) {
if f.EnvVar != "" {
if envVal := os.Getenv(f.EnvVar); envVal != "" {
envValDuration, err := time.ParseDuration(envVal)
if err == nil {
f.Value = envValDuration
}
}
}
eachName(f.Name, func(name string) {
set.Duration(name, f.Value, f.Usage)
})
}
func commandVtTabletExecute(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
transactionID := subFlags.Int("transaction_id", 0, "transaction id to use, if inside a transaction.")
bindVariables := newBindvars(subFlags)
keyspace := subFlags.String("keyspace", "", "keyspace the tablet belongs to")
shard := subFlags.String("shard", "", "shard the tablet belongs to")
tabletType := subFlags.String("tablet_type", "unknown", "tablet type we expect from the tablet (use unknown to use sessionId)")
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vttablet client")
json := subFlags.Bool("json", false, "Output JSON instead of human-readable table")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 2 {
return fmt.Errorf("the <tablet_alias> and <sql> arguments are required for the VtTabletExecute command")
}
tt, err := topoproto.ParseTabletType(*tabletType)
if err != nil {
return err
}
tabletAlias, err := topoproto.ParseTabletAlias(subFlags.Arg(0))
if err != nil {
return err
}
tabletInfo, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return err
}
ep, err := topo.TabletEndPoint(tabletInfo.Tablet)
if err != nil {
return fmt.Errorf("cannot get EndPoint from tablet record: %v", err)
}
conn, err := tabletconn.GetDialer()(ctx, ep, *keyspace, *shard, tt, *connectTimeout)
if err != nil {
return fmt.Errorf("cannot connect to tablet %v: %v", tabletAlias, err)
}
defer conn.Close()
qr, err := conn.Execute(ctx, subFlags.Arg(1), *bindVariables, int64(*transactionID))
if err != nil {
return fmt.Errorf("Execute failed: %v", err)
}
if *json {
return printJSON(wr.Logger(), qr)
}
printQueryResult(loggerWriter{wr.Logger()}, qr)
return nil
}
func commandStaleActions(wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) (string, error) {
maxStaleness := subFlags.Duration("max-staleness", 5*time.Minute, "how long since the last modification before an action considered stale")
purge := subFlags.Bool("purge", false, "purge stale actions")
if err := subFlags.Parse(args); err != nil {
return "", err
}
if subFlags.NArg() == 0 {
return "", fmt.Errorf("action StaleActions requires <zk action path>")
}
zkts, ok := wr.TopoServer().(*zktopo.Server)
if !ok {
return "", fmt.Errorf("StaleActions requires a zktopo.Server")
}
zkPaths, err := resolveWildcards(wr, subFlags.Args())
if err != nil {
return "", err
}
var errCount sync2.AtomicInt32
wg := sync.WaitGroup{}
for _, apath := range zkPaths {
wg.Add(1)
go func(zkActionPath string) {
defer wg.Done()
staleActions, err := staleActions(zkts, zkActionPath, *maxStaleness)
if err != nil {
errCount.Add(1)
wr.Logger().Errorf("can't check stale actions: %v %v", zkActionPath, err)
return
}
for _, action := range staleActions {
wr.Logger().Printf("%v\n", fmtAction(action))
}
if *purge && len(staleActions) > 0 {
err := zkts.PurgeActions(zkActionPath, actionnode.ActionNodeCanBePurged)
if err != nil {
errCount.Add(1)
wr.Logger().Errorf("can't purge stale actions: %v %v", zkActionPath, err)
return
}
}
}(apath)
}
wg.Wait()
if errCount.Get() > 0 {
return "", fmt.Errorf("some errors occurred, check the log")
}
return "", nil
}
func commandVtTabletUpdateStream(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
count := subFlags.Int("count", 1, "number of responses to wait for")
timestamp := subFlags.Int("timestamp", 0, "timestamp to start the stream from")
position := subFlags.String("position", "", "position to start the stream from")
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vttablet client")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 1 {
return fmt.Errorf("The <tablet alias> argument is required for the VtTabletUpdateStream command.")
}
tabletAlias, err := topoproto.ParseTabletAlias(subFlags.Arg(0))
if err != nil {
return err
}
tabletInfo, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return err
}
conn, err := tabletconn.GetDialer()(tabletInfo.Tablet, *connectTimeout)
if err != nil {
return fmt.Errorf("cannot connect to tablet %v: %v", tabletAlias, err)
}
stream, err := conn.UpdateStream(ctx, &querypb.Target{
Keyspace: tabletInfo.Tablet.Keyspace,
Shard: tabletInfo.Tablet.Shard,
TabletType: tabletInfo.Tablet.Type,
}, *position, int64(*timestamp))
if err != nil {
return err
}
for i := 0; i < *count; i++ {
se, err := stream.Recv()
if err != nil {
return fmt.Errorf("stream ended early: %v", err)
}
data, err := json.Marshal(se)
if err != nil {
wr.Logger().Errorf("cannot json-marshal structure: %v", err)
} else {
wr.Logger().Printf("%v\n", string(data))
}
}
return nil
}
func commandVtTabletStreamHealth(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
count := subFlags.Int("count", 1, "number of responses to wait for")
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vttablet client")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 1 {
return fmt.Errorf("The <tablet alias> argument is required for the VtTabletStreamHealth command.")
}
tabletAlias, err := topoproto.ParseTabletAlias(subFlags.Arg(0))
if err != nil {
return err
}
tabletInfo, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return err
}
ep, err := topo.TabletEndPoint(tabletInfo.Tablet)
if err != nil {
return fmt.Errorf("cannot get EndPoint from tablet record: %v", err)
}
// pass in a non-UNKNOWN tablet type to not use sessionId
conn, err := tabletconn.GetDialer()(ctx, ep, "", "", pb.TabletType_MASTER, *connectTimeout)
if err != nil {
return fmt.Errorf("cannot connect to tablet %v: %v", tabletAlias, err)
}
stream, errFunc, err := conn.StreamHealth(ctx)
if err != nil {
return err
}
for i := 0; i < *count; i++ {
shr, ok := <-stream
if !ok {
return fmt.Errorf("stream ended early: %v", errFunc())
}
data, err := json.Marshal(shr)
if err != nil {
wr.Logger().Errorf("cannot json-marshal structure: %v", err)
} else {
wr.Logger().Printf("%v\n", string(data))
}
}
return nil
}
func commandVtTabletExecute(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
transactionID := subFlags.Int("transaction_id", 0, "transaction id to use, if inside a transaction.")
bindVariables := newBindvars(subFlags)
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vttablet client")
options := subFlags.String("options", "", "execute options values as a text encoded proto of the ExecuteOptions structure")
json := subFlags.Bool("json", false, "Output JSON instead of human-readable table")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 2 {
return fmt.Errorf("the <tablet_alias> and <sql> arguments are required for the VtTabletExecute command")
}
tabletAlias, err := topoproto.ParseTabletAlias(subFlags.Arg(0))
if err != nil {
return err
}
tabletInfo, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return err
}
executeOptions, err := parseExecuteOptions(*options)
if err != nil {
return err
}
conn, err := tabletconn.GetDialer()(tabletInfo.Tablet, *connectTimeout)
if err != nil {
return fmt.Errorf("cannot connect to tablet %v: %v", tabletAlias, err)
}
defer conn.Close(ctx)
qr, err := conn.Execute(ctx, &querypb.Target{
Keyspace: tabletInfo.Tablet.Keyspace,
Shard: tabletInfo.Tablet.Shard,
TabletType: tabletInfo.Tablet.Type,
}, subFlags.Arg(1), *bindVariables, int64(*transactionID), executeOptions)
if err != nil {
return fmt.Errorf("Execute failed: %v", err)
}
if *json {
return printJSON(wr.Logger(), qr)
}
printQueryResult(loggerWriter{wr.Logger()}, qr)
return nil
}
func startCmd(subFlags *flag.FlagSet, args []string) error {
waitTime := subFlags.Duration("wait_time", 5*time.Minute, "how long to wait for startup")
subFlags.Parse(args)
// There ought to be an existing my.cnf, so use it to find mysqld.
mysqld, err := mysqlctl.OpenMysqld(uint32(*tabletUID), dbconfigFlags)
if err != nil {
return fmt.Errorf("failed to find mysql config: %v", err)
}
defer mysqld.Close()
ctx, cancel := context.WithTimeout(context.Background(), *waitTime)
defer cancel()
if err := mysqld.Start(ctx); err != nil {
return fmt.Errorf("failed start mysql: %v", err)
}
return nil
}
func cmdQlock(subFlags *flag.FlagSet, args []string) {
var (
lockWaitTimeout = subFlags.Duration("lock-wait-timeout", 0, "wait for a lock for the specified duration")
)
subFlags.Parse(args)
zkPath := fixZkPath(subFlags.Arg(0))
sigRecv := make(chan os.Signal, 1)
interrupted := make(chan struct{})
signal.Notify(sigRecv, os.Interrupt)
go func() {
<-sigRecv
close(interrupted)
}()
if err := zk.ObtainQueueLock(zconn, zkPath, *lockWaitTimeout, interrupted); err != nil {
log.Fatalf("qlock: error %v: %v", zkPath, err)
}
fmt.Printf("qlock: locked %v\n", zkPath)
}
// Apply populates the flag given the flag set and environment
func (f DurationFlag) Apply(set *flag.FlagSet) {
if f.EnvVar != "" {
for _, envVar := range strings.Split(f.EnvVar, ",") {
envVar = strings.TrimSpace(envVar)
if envVal := os.Getenv(envVar); envVal != "" {
envValDuration, err := time.ParseDuration(envVal)
if err == nil {
f.Value = envValDuration
break
}
}
}
}
eachName(f.Name, func(name string) {
set.Duration(name, f.Value, f.Usage)
})
}
func commandVtTabletBegin(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
keyspace := subFlags.String("keyspace", "", "keyspace the tablet belongs to")
shard := subFlags.String("shard", "", "shard the tablet belongs to")
tabletType := subFlags.String("tablet_type", "unknown", "tablet type we expect from the tablet (use unknown to use sessionId)")
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vttablet client")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 1 {
return fmt.Errorf("the <tablet_alias> argument is required for the VtTabletBegin command")
}
tt, err := topoproto.ParseTabletType(*tabletType)
if err != nil {
return err
}
tabletAlias, err := topoproto.ParseTabletAlias(subFlags.Arg(0))
if err != nil {
return err
}
tabletInfo, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return err
}
ep, err := topo.TabletEndPoint(tabletInfo.Tablet)
if err != nil {
return fmt.Errorf("cannot get EndPoint from tablet record: %v", err)
}
conn, err := tabletconn.GetDialer()(ctx, ep, *keyspace, *shard, tt, *connectTimeout)
if err != nil {
return fmt.Errorf("cannot connect to tablet %v: %v", tabletAlias, err)
}
defer conn.Close()
transactionID, err := conn.Begin(ctx)
if err != nil {
return fmt.Errorf("Begin failed: %v", err)
}
result := map[string]int64{
"transaction_id": transactionID,
}
return printJSON(wr, result)
}
func initCmd(subFlags *flag.FlagSet, args []string) error {
waitTime := subFlags.Duration("wait_time", 5*time.Minute, "how long to wait for startup")
initDBSQLFile := subFlags.String("init_db_sql_file", "", "path to .sql file to run after mysql_install_db")
subFlags.Parse(args)
// Generate my.cnf from scratch and use it to find mysqld.
mysqld, err := mysqlctl.CreateMysqld(uint32(*tabletUID), *mysqlSocket, int32(*mysqlPort), dbconfigFlags)
if err != nil {
return fmt.Errorf("failed to initialize mysql config: %v", err)
}
defer mysqld.Close()
ctx, cancel := context.WithTimeout(context.Background(), *waitTime)
defer cancel()
if err := mysqld.Init(ctx, *initDBSQLFile); err != nil {
return fmt.Errorf("failed init mysql: %v", err)
}
return nil
}
func commandInitShardMaster(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
force := subFlags.Bool("force", false, "will force the reparent even if the provided tablet is not a master or the shard master")
waitSlaveTimeout := subFlags.Duration("wait_slave_timeout", 30*time.Second, "time to wait for slaves to catch up in reparenting")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 2 {
return fmt.Errorf("action InitShardMaster requires <keyspace/shard> <tablet alias>")
}
keyspace, shard, err := topoproto.ParseKeyspaceShard(subFlags.Arg(0))
if err != nil {
return err
}
tabletAlias, err := topoproto.ParseTabletAlias(subFlags.Arg(1))
if err != nil {
return err
}
return wr.InitShardMaster(ctx, keyspace, shard, tabletAlias, *force, *waitSlaveTimeout)
}
