display/table/table.go

// Licensed to Apache Software Foundation (ASF) under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Apache Software Foundation (ASF) licenses this file to you 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, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

package table

import (
	"encoding/json"
	"os"

	d "github.com/apache/skywalking-cli/display/displayable"

	"github.com/apache/skywalking-cli/logger"

	"github.com/olekukonko/tablewriter"
)

func Display(displayable *d.Displayable) error {
	var stringMapArrays []map[string]string

	bytes, _ := json.Marshal(displayable.Data)
	_ = json.Unmarshal(bytes, &stringMapArrays)

	if len(stringMapArrays) < 1 {
		return nil
	}

	var header []string

	for k := range stringMapArrays[0] {
		header = append(header, k)
	}

	logger.Log.Debugln("stringMapArrays = ", stringMapArrays, " Headers = ", header)

	var data [][]string

	for _, objMap := range stringMapArrays {
		var datum []string
		for _, key := range header {
			datum = append(datum, objMap[key])
		}
		data = append(data, datum)
	}

	table := tablewriter.NewWriter(os.Stdout)
	table.SetHeader(header)
	table.AppendBulk(data)
	table.Render()

	return nil
}