github.com/pingcap/ticdc@v0.0.0-20220526033649-485a10ef2652/cmd/client_processor.go (about)

     1  // Copyright 2020 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 cmd
    15  
    16  import (
    17  	_ "github.com/go-sql-driver/mysql" // mysql driver
    18  	cerror "github.com/pingcap/ticdc/pkg/errors"
    19  	"github.com/spf13/cobra"
    20  )
    21  
    22  func newProcessorCommand() *cobra.Command {
    23  	command := &cobra.Command{
    24  		Use:   "processor",
    25  		Short: "Manage processor (processor is a sub replication task running on a specified capture)",
    26  	}
    27  	command.AddCommand(
    28  		newListProcessorCommand(),
    29  		newQueryProcessorCommand(),
    30  	)
    31  	return command
    32  }
    33  
    34  func newListProcessorCommand() *cobra.Command {
    35  	command := &cobra.Command{
    36  		Use:   "list",
    37  		Short: "List all processors in TiCDC cluster",
    38  		RunE: func(cmd *cobra.Command, args []string) error {
    39  			ctx := defaultContext
    40  			info, err := cdcEtcdCli.GetProcessors(ctx)
    41  			if err != nil {
    42  				return err
    43  			}
    44  			return jsonPrint(cmd, info)
    45  		},
    46  	}
    47  	return command
    48  }
    49  
    50  func newQueryProcessorCommand() *cobra.Command {
    51  	command := &cobra.Command{
    52  		Use:   "query",
    53  		Short: "Query information and status of a sub replication task (processor)",
    54  		RunE: func(cmd *cobra.Command, args []string) error {
    55  			ctx := defaultContext
    56  			_, status, err := cdcEtcdCli.GetTaskStatus(ctx, changefeedID, captureID)
    57  			if err != nil && cerror.ErrTaskStatusNotExists.Equal(err) {
    58  				return err
    59  			}
    60  			_, position, err := cdcEtcdCli.GetTaskPosition(ctx, changefeedID, captureID)
    61  			if err != nil && cerror.ErrTaskPositionNotExists.Equal(err) {
    62  				return err
    63  			}
    64  			meta := &processorMeta{Status: status, Position: position}
    65  			return jsonPrint(cmd, meta)
    66  		},
    67  	}
    68  	command.PersistentFlags().StringVarP(&changefeedID, "changefeed-id", "c", "", "Replication task (changefeed) ID")
    69  	command.PersistentFlags().StringVarP(&captureID, "capture-id", "p", "", "Capture ID")
    70  	_ = command.MarkPersistentFlagRequired("changefeed-id")
    71  	_ = command.MarkPersistentFlagRequired("capture-id")
    72  	return command
    73  }