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display.go
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display.go
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// Copyright 2020 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 command
import (
"errors"
"fmt"
"strings"
perrs "github.com/pingcap/errors"
"github.com/pingcap/tiup/pkg/cluster/manager"
"github.com/pingcap/tiup/pkg/cluster/spec"
"github.com/pingcap/tiup/pkg/meta"
"github.com/spf13/cobra"
)
func newDisplayCmd() *cobra.Command {
var (
dopt manager.DisplayOption
showVersionOnly bool
statusTimeout uint64
)
cmd := &cobra.Command{
Use: "display <cluster-name>",
Short: "Display information of a DM cluster",
RunE: func(cmd *cobra.Command, args []string) error {
if len(args) != 1 {
return cmd.Help()
}
gOpt.APITimeout = statusTimeout
dopt.ClusterName = args[0]
if showVersionOnly {
metadata, err := spec.ClusterMetadata(dopt.ClusterName)
if err != nil && !errors.Is(perrs.Cause(err), meta.ErrValidate) {
return err
}
fmt.Println(metadata.Version)
return nil
}
return cm.Display(dopt, gOpt)
},
ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
switch len(args) {
case 0:
return shellCompGetClusterName(cm, toComplete)
default:
return nil, cobra.ShellCompDirectiveNoFileComp
}
},
}
cmd.Flags().StringSliceVarP(&gOpt.Roles, "role", "R", nil, "Only display specified roles")
cmd.Flags().StringSliceVarP(&gOpt.Nodes, "node", "N", nil, "Only display specified nodes")
cmd.Flags().BoolVar(&showVersionOnly, "version", false, "Only display DM cluster version")
cmd.Flags().BoolVar(&dopt.ShowUptime, "uptime", false, "Display DM with uptime")
cmd.Flags().Uint64Var(&statusTimeout, "status-timeout", 10, "Timeout in seconds when getting node status")
return cmd
}
func shellCompGetClusterName(cm *manager.Manager, toComplete string) ([]string, cobra.ShellCompDirective) {
var result []string
clusters, _ := cm.GetClusterList()
for _, c := range clusters {
if strings.HasPrefix(c.Name, toComplete) {
result = append(result, c.Name)
}
}
return result, cobra.ShellCompDirectiveNoFileComp
}