Golang Meta.ListTables方法代码示例

func (do *Domain) getAllSchemasWithTablesFromMeta(m *meta.Meta) ([]*model.DBInfo, error) {
	schemas, err := m.ListDatabases()
	if err != nil {
		return nil, errors.Trace(err)
	}

	for _, di := range schemas {
		if di.State != model.StatePublic {
			// schema is not public, can't be used outside.
			continue
		}

		tables, err1 := m.ListTables(di.ID)
		if err1 != nil {
			err = err1
			return nil, errors.Trace(err1)
		}

		di.Tables = make([]*model.TableInfo, 0, len(tables))
		for _, tbl := range tables {
			if tbl.State != model.StatePublic {
				// schema is not public, can't be used outside.
				continue
			}
			di.Tables = append(di.Tables, tbl)
		}
	}
	return schemas, nil
}

func (d *ddl) delReorgSchema(t *meta.Meta, job *model.Job) error {
	dbInfo := &model.DBInfo{}
	if err := job.DecodeArgs(dbInfo); err != nil {
		// arg error, cancel this job.
		job.State = model.JobCancelled
		return errors.Trace(err)
	}

	tables, err := t.ListTables(dbInfo.ID)
	if terror.ErrorEqual(meta.ErrDBNotExists, err) {
		job.State = model.JobDone
		return nil
	}
	if err != nil {
		return errors.Trace(err)
	}

	if err = d.dropSchemaData(dbInfo, tables); err != nil {
		return errors.Trace(err)
	}

	// finish this background job
	job.SchemaState = model.StateNone
	job.State = model.JobDone

	return nil
}

func (d *ddl) onCreateTable(t *meta.Meta, job *model.Job) error {
	schemaID := job.SchemaID
	tbInfo := &model.TableInfo{}
	if err := job.DecodeArgs(tbInfo); err != nil {
		// arg error, cancel this job.
		job.State = model.JobCancelled
		return errors.Trace(err)
	}

	tbInfo.State = model.StateNone

	tables, err := t.ListTables(schemaID)
	if terror.ErrorEqual(err, meta.ErrDBNotExists) {
		job.State = model.JobCancelled
		return errors.Trace(infoschema.ErrDatabaseNotExists)
	} else if err != nil {
		return errors.Trace(err)
	}

	for _, tbl := range tables {
		if tbl.Name.L == tbInfo.Name.L {
			if tbl.ID != tbInfo.ID {
				// table exists, can't create, we should cancel this job now.
				job.State = model.JobCancelled
				return errors.Trace(infoschema.ErrTableExists)
			}

			tbInfo = tbl
		}
	}

	ver, err := updateSchemaVersion(t, job)
	if err != nil {
		return errors.Trace(err)
	}

	switch tbInfo.State {
	case model.StateNone:
		// none -> public
		job.SchemaState = model.StatePublic
		tbInfo.State = model.StatePublic
		err = t.CreateTable(schemaID, tbInfo)
		if err != nil {
			return errors.Trace(err)
		}
		// finish this job
		job.State = model.JobDone
		addTableHistoryInfo(job, ver, tbInfo)
		return nil
	default:
		return ErrInvalidTableState.Gen("invalid table state %v", tbInfo.State)
	}
}

func (d *ddl) onDropSchema(t *meta.Meta, job *model.Job) error {
	dbInfo, err := t.GetDatabase(job.SchemaID)
	if err != nil {
		return errors.Trace(err)
	}
	if dbInfo == nil {
		job.State = model.JobCancelled
		return errors.Trace(infoschema.ErrDatabaseDropExists)
	}

	ver, err := updateSchemaVersion(t, job)
	if err != nil {
		return errors.Trace(err)
	}

	switch dbInfo.State {
	case model.StatePublic:
		// public -> write only
		job.SchemaState = model.StateWriteOnly
		dbInfo.State = model.StateWriteOnly
		err = t.UpdateDatabase(dbInfo)
	case model.StateWriteOnly:
		// write only -> delete only
		job.SchemaState = model.StateDeleteOnly
		dbInfo.State = model.StateDeleteOnly
		err = t.UpdateDatabase(dbInfo)
	case model.StateDeleteOnly:
		dbInfo.State = model.StateNone
		tables, err := t.ListTables(job.SchemaID)
		if err != nil {
			return errors.Trace(err)
		}

		err = t.UpdateDatabase(dbInfo)
		if err = t.DropDatabase(dbInfo.ID); err != nil {
			break
		}

		// finish this job
		addDBHistoryInfo(job, ver, dbInfo)
		if len(tables) > 0 {
			job.Args = append(job.Args, getIDs(tables))
		}
		job.State = model.JobDone
		job.SchemaState = model.StateNone
	default:
		// we can't enter here.
		err = errors.Errorf("invalid db state %v", dbInfo.State)
	}

	return errors.Trace(err)
}

func (do *Domain) fetchSchemasWithTables(schemas []*model.DBInfo, m *meta.Meta, done chan error) {
	for _, di := range schemas {
		if di.State != model.StatePublic {
			// schema is not public, can't be used outside.
			continue
		}
		tables, err := m.ListTables(di.ID)
		if err != nil {
			done <- err
			return
		}
		di.Tables = make([]*model.TableInfo, 0, len(tables))
		for _, tbl := range tables {
			if tbl.State != model.StatePublic {
				// schema is not public, can't be used outside.
				continue
			}
			di.Tables = append(di.Tables, tbl)
		}
	}
	done <- nil
}

func (d *ddl) onDropSchema(t *meta.Meta, job *model.Job) error {
	dbInfo, err := t.GetDatabase(job.SchemaID)
	if err != nil {
		return errors.Trace(err)
	}
	if dbInfo == nil {
		job.State = model.JobCancelled
		return errors.Trace(ErrNotExists)
	}

	_, err = t.GenSchemaVersion()
	if err != nil {
		return errors.Trace(err)
	}

	switch dbInfo.State {
	case model.StatePublic:
		// public -> write only
		job.SchemaState = model.StateWriteOnly
		dbInfo.State = model.StateWriteOnly
		err = t.UpdateDatabase(dbInfo)
		return errors.Trace(err)
	case model.StateWriteOnly:
		// write only -> delete only
		job.SchemaState = model.StateDeleteOnly
		dbInfo.State = model.StateDeleteOnly
		err = t.UpdateDatabase(dbInfo)
		return errors.Trace(err)
	case model.StateDeleteOnly:
		// delete only -> reorganization
		job.SchemaState = model.StateDeleteReorganization
		dbInfo.State = model.StateDeleteReorganization
		err = t.UpdateDatabase(dbInfo)
		return errors.Trace(err)
	case model.StateDeleteReorganization:
		// wait reorganization jobs done and drop meta.
		var tables []*model.TableInfo
		tables, err = t.ListTables(dbInfo.ID)
		if err != nil {
			return errors.Trace(err)
		}

		err = d.runReorgJob(func() error {
			return d.dropSchemaData(dbInfo, tables)
		})

		if terror.ErrorEqual(err, errWaitReorgTimeout) {
			// if timeout, we should return, check for the owner and re-wait job done.
			return nil
		}
		if err != nil {
			return errors.Trace(err)
		}

		// all reorganization jobs done, drop this database
		if err = t.DropDatabase(dbInfo.ID); err != nil {
			return errors.Trace(err)
		}

		// finish this job
		job.State = model.JobDone
		job.SchemaState = model.StateNone
		return nil
	default:
		// we can't enter here.
		return errors.Errorf("invalid db state %v", dbInfo.State)
	}
}

func (d *ddl) onCreateTable(t *meta.Meta, job *model.Job) error {
	schemaID := job.SchemaID
	tbInfo := &model.TableInfo{}
	if err := job.DecodeArgs(tbInfo); err != nil {
		// arg error, cancel this job.
		job.State = model.JobCancelled
		return errors.Trace(err)
	}

	tbInfo.State = model.StateNone

	tables, err := t.ListTables(schemaID)
	if terror.ErrorEqual(err, meta.ErrDBNotExists) {
		job.State = model.JobCancelled
		return errors.Trace(terror.DatabaseNotExists)
	} else if err != nil {
		return errors.Trace(err)
	}

	for _, tbl := range tables {
		if tbl.Name.L == tbInfo.Name.L {
			if tbl.ID != tbInfo.ID {
				// table exists, can't create, we should cancel this job now.
				job.State = model.JobCancelled
				return errors.Trace(ErrExists)
			}

			tbInfo = tbl
		}
	}

	_, err = t.GenSchemaVersion()
	if err != nil {
		return errors.Trace(err)
	}

	switch tbInfo.State {
	case model.StateNone:
		// none -> delete only
		job.SchemaState = model.StateDeleteOnly
		tbInfo.State = model.StateDeleteOnly
		err = t.CreateTable(schemaID, tbInfo)
		return errors.Trace(err)
	case model.StateDeleteOnly:
		// delete only -> write only
		job.SchemaState = model.StateWriteOnly
		tbInfo.State = model.StateWriteOnly
		err = t.UpdateTable(schemaID, tbInfo)
		return errors.Trace(err)
	case model.StateWriteOnly:
		// write only -> public
		job.SchemaState = model.StatePublic
		tbInfo.State = model.StatePublic
		err = t.UpdateTable(schemaID, tbInfo)
		if err != nil {
			return errors.Trace(err)
		}

		// finish this job
		job.State = model.JobDone
		return nil
	default:
		return errors.Errorf("invalid table state %v", tbInfo.State)
	}
}