interactive command: sup
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Shlomi Noach
parent
e6a02d81e0
commit
9752179723
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@ -15,8 +15,8 @@ Both interfaces may serve at the same time. Both respond to simple text command,
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### Known commands
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- `help`: shows a brief list of available commands
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- `status`: returns a status summary of migration progress and configuration
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replication lag on to determine throttling
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- `status`: returns a detailed status summary of migration progress and configuration
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- `sup`: returns a brief status summary of migration progress
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- `chunk-size=<newsize>`: modify the `chunk-size`; applies on next running copy-iteration
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- `max-lag-millis=<max-lag>`: modify the maximum replication lag threshold (milliseconds, minimum value is `1000`, i.e. 1 second)
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- `max-load=<max-load-thresholds>`: modify the `max-load` config; applies on next running copy-iteration
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@ -43,9 +43,10 @@ const (
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type PrintStatusRule int
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const (
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HeuristicPrintStatusRule PrintStatusRule = iota
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ForcePrintStatusRule = iota
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ForcePrintStatusAndHint = iota
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HeuristicPrintStatusRule PrintStatusRule = iota
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ForcePrintStatusRule = iota
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ForcePrintStatusOnlyRule = iota
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ForcePrintStatusAndHintRule = iota
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)
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// Migrator is the main schema migration flow manager.
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@ -522,7 +523,7 @@ func (this *Migrator) waitForEventsUpToLock() (err error) {
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waitForEventsUpToLockDuration := time.Since(waitForEventsUpToLockStartTime)
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log.Infof("Done waiting for events up to lock; duration=%+v", waitForEventsUpToLockDuration)
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this.printStatus(ForcePrintStatusAndHint)
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this.printStatus(ForcePrintStatusAndHintRule)
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return nil
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}
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@ -662,7 +663,8 @@ func (this *Migrator) onServerCommand(command string, writer *bufio.Writer) (err
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case "help":
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{
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fmt.Fprintln(writer, `available commands:
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status # Print a status message
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status # Print a detailed status message
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sup # Print a short status message
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chunk-size=<newsize> # Set a new chunk-size
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nice-ratio=<ratio> # Set a new nice-ratio, immediate sleep after each row-copy operation, float (examples: 0 is agrressive, 0.7 adds 70% runtime, 1.0 doubles runtime, 2.0 triples runtime, ...)
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critical-load=<load> # Set a new set of max-load thresholds
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@ -678,8 +680,10 @@ panic # panic and quit without cleanup
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help # This message
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`)
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}
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case "sup":
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this.printStatus(ForcePrintStatusOnlyRule, writer)
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case "info", "status":
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this.printStatus(ForcePrintStatusAndHint, writer)
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this.printStatus(ForcePrintStatusAndHintRule, writer)
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case "chunk-size":
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{
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if chunkSize, err := strconv.Atoi(arg); err != nil {
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@ -687,7 +691,7 @@ help # This message
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return log.Errore(err)
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} else {
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this.migrationContext.SetChunkSize(int64(chunkSize))
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this.printStatus(ForcePrintStatusAndHint, writer)
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this.printStatus(ForcePrintStatusAndHintRule, writer)
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}
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}
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case "max-lag-millis":
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@ -697,13 +701,13 @@ help # This message
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return log.Errore(err)
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} else {
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this.migrationContext.SetMaxLagMillisecondsThrottleThreshold(int64(maxLagMillis))
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this.printStatus(ForcePrintStatusAndHint, writer)
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this.printStatus(ForcePrintStatusAndHintRule, writer)
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}
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}
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case "replication-lag-query":
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{
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this.migrationContext.SetReplicationLagQuery(arg)
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this.printStatus(ForcePrintStatusAndHint, writer)
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this.printStatus(ForcePrintStatusAndHintRule, writer)
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}
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case "nice-ratio":
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{
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@ -712,7 +716,7 @@ help # This message
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return log.Errore(err)
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} else {
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this.migrationContext.SetNiceRatio(niceRatio)
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this.printStatus(ForcePrintStatusAndHint, writer)
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this.printStatus(ForcePrintStatusAndHintRule, writer)
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}
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}
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case "max-load":
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@ -721,7 +725,7 @@ help # This message
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fmt.Fprintf(writer, "%s\n", err.Error())
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return log.Errore(err)
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}
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this.printStatus(ForcePrintStatusAndHint, writer)
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this.printStatus(ForcePrintStatusAndHintRule, writer)
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}
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case "critical-load":
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{
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@ -729,13 +733,13 @@ help # This message
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fmt.Fprintf(writer, "%s\n", err.Error())
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return log.Errore(err)
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}
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this.printStatus(ForcePrintStatusAndHint, writer)
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this.printStatus(ForcePrintStatusAndHintRule, writer)
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}
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case "throttle-query":
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{
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this.migrationContext.SetThrottleQuery(arg)
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fmt.Fprintf(writer, throttleHint)
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this.printStatus(ForcePrintStatusAndHint, writer)
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this.printStatus(ForcePrintStatusAndHintRule, writer)
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}
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case "throttle-control-replicas":
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{
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@ -744,13 +748,13 @@ help # This message
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return log.Errore(err)
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}
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fmt.Fprintf(writer, "%s\n", this.migrationContext.GetThrottleControlReplicaKeys().ToCommaDelimitedList())
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this.printStatus(ForcePrintStatusAndHint, writer)
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this.printStatus(ForcePrintStatusAndHintRule, writer)
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}
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case "throttle", "pause", "suspend":
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{
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atomic.StoreInt64(&this.migrationContext.ThrottleCommandedByUser, 1)
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fmt.Fprintf(writer, throttleHint)
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this.printStatus(ForcePrintStatusAndHint, writer)
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this.printStatus(ForcePrintStatusAndHintRule, writer)
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}
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case "no-throttle", "unthrottle", "resume", "continue":
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{
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@ -840,7 +844,7 @@ func (this *Migrator) initiateInspector() (err error) {
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// initiateStatus sets and activates the printStatus() ticker
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func (this *Migrator) initiateStatus() error {
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this.printStatus(ForcePrintStatusAndHint)
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this.printStatus(ForcePrintStatusAndHintRule)
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statusTick := time.Tick(1 * time.Second)
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for range statusTick {
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go this.printStatus(HeuristicPrintStatusRule)
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@ -949,9 +953,12 @@ func (this *Migrator) printStatus(rule PrintStatusRule, writers ...io.Writer) {
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// Before status, let's see if we should print a nice reminder for what exactly we're doing here.
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shouldPrintMigrationStatusHint := (elapsedSeconds%600 == 0)
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if rule == ForcePrintStatusAndHint {
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if rule == ForcePrintStatusAndHintRule {
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shouldPrintMigrationStatusHint = true
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}
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if rule == ForcePrintStatusOnlyRule {
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shouldPrintMigrationStatusHint = false
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}
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if shouldPrintMigrationStatusHint {
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this.printMigrationStatusHint(writers...)
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}
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@ -992,7 +999,7 @@ func (this *Migrator) printStatus(rule PrintStatusRule, writers ...io.Writer) {
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} else {
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shouldPrintStatus = (elapsedSeconds%30 == 0)
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}
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if rule == ForcePrintStatusRule || rule == ForcePrintStatusAndHint {
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if rule == ForcePrintStatusRule || rule == ForcePrintStatusAndHintRule {
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shouldPrintStatus = true
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}
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if !shouldPrintStatus {
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