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cli.go
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cli.go
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// Copyright 2021 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package cli
import (
"fmt"
"io"
"os"
"github.com/chzyer/readline"
"github.com/mattn/go-shellwords"
"github.com/spf13/cobra"
"github.com/tikv/migration/cdc/pkg/cmd/factory"
"github.com/tikv/migration/cdc/pkg/cmd/util"
"github.com/tikv/migration/cdc/pkg/logutil"
)
// options defines flags for the `cli` command.
type options struct {
interact bool
}
// newOptions creates new options for the `cli` command.
func newOptions() *options {
return &options{}
}
// addFlags receives a *cobra.Command reference and binds
// flags related to template printing to it.
func (o *options) addFlags(c *cobra.Command) {
if o == nil {
return
}
c.PersistentFlags().BoolVarP(&o.interact, "interact", "i", false, "Run cdc cli with readline")
}
// NewCmdCli creates the `cli` command.
func NewCmdCli() *cobra.Command {
// Bind the certificate and log options.
cf := factory.NewClientFlags()
o := newOptions()
cmds := &cobra.Command{
Use: "cli",
Short: "Manage replication task and TiKV-CDC cluster",
PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
// Here we will initialize the logging configuration and set the current default context.
util.InitCmd(cmd, &logutil.Config{Level: cf.GetLogLevel()})
util.LogHTTPProxies()
return nil
},
Args: cobra.NoArgs,
Run: func(cmd *cobra.Command, args []string) {
// Whether to run interactively or not.
if o.interact {
run()
}
},
}
// Binding the `cli` command flags.
o.addFlags(cmds)
cf.AddFlags(cmds)
// Construct the client construction factory.
f := factory.NewFactory(cf)
// Add subcommands.
cmds.AddCommand(newCmdCapture(f))
cmds.AddCommand(newCmdChangefeed(f))
cmds.AddCommand(newCmdProcessor(f))
cmds.AddCommand(newCmdTso(f))
cmds.AddCommand(newCmdUnsafe(f))
return cmds
}
func run() {
l, err := readline.NewEx(&readline.Config{
Prompt: "\033[31m»\033[0m ",
HistoryFile: "/tmp/readline.tmp",
InterruptPrompt: "^C",
EOFPrompt: "^D",
HistorySearchFold: true,
})
if err != nil {
panic(err)
}
defer l.Close()
for {
line, err := l.Readline()
if err != nil {
if err == readline.ErrInterrupt {
break
} else if err == io.EOF {
break
}
continue
}
if line == "exit" {
os.Exit(0)
}
args, err := shellwords.Parse(line)
if err != nil {
fmt.Printf("parse command err: %v\n", err)
continue
}
command := NewCmdCli()
command.SetArgs(args)
_ = command.ParseFlags(args)
command.SetOut(os.Stdout)
command.SetErr(os.Stdout)
if err = command.Execute(); err != nil {
command.Println(err)
}
}
}