cmd/build/main.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 main

import (
	"io"
	"os"

	"github.com/sirupsen/logrus"
	"github.com/spf13/cobra"

	"github.com/apache/skywalking-swck/pkg/build"
)

const (
	cliName = "swck-build-tool"
)

func main() {
	//The verbose flag value
	var v string
	cmd := &cobra.Command{
		Short:        cliName,
		Long:         "SWCK build tool chain",
		SilenceUsage: true,
		PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
			if err := setUpLogs(os.Stdout, v); err != nil {
				return err
			}
			return nil
		},
	}
	cmd.PersistentFlags().StringVarP(&v, "verbosity", "v", logrus.InfoLevel.String(), "Log level (debug, info, warn, error, fatal, panic")
	cmd.Use = cliName
	cmd.AddCommand(build.NewLicense())

	if err := cmd.Execute(); err != nil {
		os.Exit(1)
	}
}

//setUpLogs set the log output ans the log level
func setUpLogs(out io.Writer, level string) error {
	logrus.SetOutput(out)
	lvl, err := logrus.ParseLevel(level)
	if err != nil {
		return err
	}
	logrus.SetLevel(lvl)
	return nil
}