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label_command.go
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label_command.go
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// Copyright 2017 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 (
"fmt"
"net/http"
"github.com/spf13/cobra"
)
var (
labelsPrefix = "pd/api/v1/labels"
labelsStorePrefix = "pd/api/v1/labels/stores"
)
// NewLabelCommand return a member subcommand of rootCmd
func NewLabelCommand() *cobra.Command {
l := &cobra.Command{
Use: "label [store]",
Short: "show the labels",
Run: showLabelsCommandFunc,
}
l.AddCommand(NewLabelListStoresCommand())
return l
}
// NewLabelListStoresCommand return a label subcommand of labelCmd
func NewLabelListStoresCommand() *cobra.Command {
l := &cobra.Command{
Use: "store <name> [value]",
Short: "show the stores with specify label",
Run: showLabelListStoresCommandFunc,
}
return l
}
func showLabelsCommandFunc(cmd *cobra.Command, args []string) {
r, err := doRequest(cmd, labelsPrefix, http.MethodGet)
if err != nil {
fmt.Printf("Failed to get labels: %s\n", err)
return
}
fmt.Println(r)
}
func getValue(args []string, i int) string {
if len(args) <= i {
return ""
}
return args[i]
}
func showLabelListStoresCommandFunc(cmd *cobra.Command, args []string) {
if len(args) > 2 {
fmt.Println("Usage: label store name [value]")
return
}
namePrefix := fmt.Sprintf("name=%s", getValue(args, 0))
valuePrefix := fmt.Sprintf("value=%s", getValue(args, 1))
prefix := fmt.Sprintf("%s?%s&%s", labelsStorePrefix, namePrefix, valuePrefix)
r, err := doRequest(cmd, prefix, http.MethodGet)
if err != nil {
fmt.Printf("Failed to get stores through label: %s\n", err)
return
}
fmt.Println(r)
}