github.com/pingcap/tiflow@v0.0.0-20240520035814-5bf52d54e205/dm/ctl/master/transfer_source.go (about)

     1  // Copyright 2021 PingCAP, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package master
    15  
    16  import (
    17  	"context"
    18  	"errors"
    19  	"os"
    20  
    21  	"github.com/pingcap/tiflow/dm/ctl/common"
    22  	"github.com/pingcap/tiflow/dm/pb"
    23  	"github.com/spf13/cobra"
    24  )
    25  
    26  // NewTransferSourceCmd creates a TransferSource command.
    27  func NewTransferSourceCmd() *cobra.Command {
    28  	cmd := &cobra.Command{
    29  		Use:   "transfer-source <source-id> <worker-id>",
    30  		Short: "Transfers a upstream MySQL/MariaDB source to a free worker",
    31  		RunE:  transferSourceFunc,
    32  	}
    33  	return cmd
    34  }
    35  
    36  func transferSourceFunc(cmd *cobra.Command, _ []string) error {
    37  	if len(cmd.Flags().Args()) != 2 {
    38  		cmd.SetOut(os.Stdout)
    39  		common.PrintCmdUsage(cmd)
    40  		return errors.New("please check output to see error")
    41  	}
    42  
    43  	sourceID := cmd.Flags().Arg(0)
    44  	workerID := cmd.Flags().Arg(1)
    45  	var err error
    46  
    47  	ctx, cancel := context.WithCancel(context.Background())
    48  	defer cancel()
    49  
    50  	resp := &pb.TransferSourceResponse{}
    51  	err = common.SendRequest(
    52  		ctx,
    53  		"TransferSource",
    54  		&pb.TransferSourceRequest{
    55  			Source: sourceID,
    56  			Worker: workerID,
    57  		},
    58  		&resp,
    59  	)
    60  
    61  	if err != nil {
    62  		return err
    63  	}
    64  
    65  	common.PrettyPrintResponse(resp)
    66  	return nil
    67  }