// Backup takes a db backup and sends it to the BackupStorage
func (agent *ActionAgent) Backup(ctx context.Context, concurrency int, logger logutil.Logger) error {
if err := agent.lock(ctx); err != nil {
return err
}
defer agent.unlock()
// update our type to BACKUP
tablet, err := agent.TopoServer.GetTablet(ctx, agent.TabletAlias)
if err != nil {
return err
}
if tablet.Type == topodatapb.TabletType_MASTER {
return fmt.Errorf("type MASTER cannot take backup, if you really need to do this, restart vttablet in replica mode")
}
originalType := tablet.Type
if _, err := topotools.ChangeType(ctx, agent.TopoServer, tablet.Alias, topodatapb.TabletType_BACKUP); err != nil {
return err
}
// let's update our internal state (stop query service and other things)
if err := agent.refreshTablet(ctx, "before backup"); err != nil {
return err
}
// create the loggers: tee to console and source
l := logutil.NewTeeLogger(logutil.NewConsoleLogger(), logger)
// now we can run the backup
dir := fmt.Sprintf("%v/%v", tablet.Keyspace, tablet.Shard)
name := fmt.Sprintf("%v.%v", time.Now().UTC().Format("2006-01-02.150405"), topoproto.TabletAliasString(tablet.Alias))
returnErr := mysqlctl.Backup(ctx, agent.MysqlDaemon, l, dir, name, concurrency, agent.hookExtraEnv())
// change our type back to the original value
_, err = topotools.ChangeType(ctx, agent.TopoServer, tablet.Alias, originalType)
if err != nil {
// failure in changing the topology type is probably worse,
// so returning that (we logged the snapshot error anyway)
if returnErr != nil {
l.Errorf("mysql backup command returned error: %v", returnErr)
}
returnErr = err
}
// let's update our internal state (start query service and other things)
if err := agent.refreshTablet(ctx, "after backup"); err != nil {
return err
}
// and re-run health check to be sure to capture any replication delay
agent.runHealthCheckLocked()
return returnErr
}
// Backup takes a db backup and sends it to the BackupStorage
// Should be called under RPCWrapLockAction.
func (agent *ActionAgent) Backup(ctx context.Context, concurrency int, logger logutil.Logger) error {
// update our type to BACKUP
tablet, err := agent.TopoServer.GetTablet(ctx, agent.TabletAlias)
if err != nil {
return err
}
if tablet.Type == topodatapb.TabletType_MASTER {
return fmt.Errorf("type MASTER cannot take backup, if you really need to do this, restart vttablet in replica mode")
}
originalType := tablet.Type
if _, err := topotools.ChangeType(ctx, agent.TopoServer, tablet.Alias, topodatapb.TabletType_BACKUP, make(map[string]string)); err != nil {
return err
}
// let's update our internal state (stop query service and other things)
if err := agent.refreshTablet(ctx, "backup"); err != nil {
return fmt.Errorf("failed to update state before backup: %v", err)
}
// create the loggers: tee to console and source
l := logutil.NewTeeLogger(logutil.NewConsoleLogger(), logger)
// now we can run the backup
dir := fmt.Sprintf("%v/%v", tablet.Keyspace, tablet.Shard)
name := fmt.Sprintf("%v.%v", time.Now().UTC().Format("2006-01-02.150405"), topoproto.TabletAliasString(tablet.Alias))
returnErr := mysqlctl.Backup(ctx, agent.MysqlDaemon, l, dir, name, concurrency, agent.hookExtraEnv())
// and change our type back to the appropriate value:
// - if healthcheck is enabled, go to spare
// - if not, go back to original type
if agent.IsRunningHealthCheck() {
originalType = topodatapb.TabletType_SPARE
}
_, err = topotools.ChangeType(ctx, agent.TopoServer, tablet.Alias, originalType, nil)
if err != nil {
// failure in changing the topology type is probably worse,
// so returning that (we logged the snapshot error anyway)
if returnErr != nil {
l.Errorf("mysql backup command returned error: %v", returnErr)
}
returnErr = err
}
return returnErr
}