main.go

// Copyright 2014 The Serviced Authors.
// 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,
// 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 (
	"fmt"
	"os"
	"strings"

	"github.com/control-center/serviced/cli/api"
	"github.com/control-center/serviced/cli/cmd"
	"github.com/control-center/serviced/logging"
	"github.com/control-center/serviced/servicedversion"
	"github.com/control-center/serviced/utils"
)

const conffile = "/etc/default/serviced"

var (
	Version   string
	GoVersion string
	Date      string
	Gitcommit string
	Gitbranch string
	Buildtag  string
)

func main() {
	servicedversion.Version = Version
	servicedversion.GoVersion = GoVersion
	servicedversion.Date = Date
	servicedversion.Gitcommit = Gitcommit
	servicedversion.Gitbranch = Gitbranch
	servicedversion.Buildtag = Buildtag

	config, err := getConfigs(os.Args)
	if err != nil {
		fmt.Fprintf(os.Stderr, "WARNING: could not read default configs: %s\n", err)
	}

	cmd.New(api.New(), config, logging.NewLogControl()).Run(os.Args)
}

func getConfigs(args []string) (*utils.EnvironConfigReader, error) {
	var filename string
	for i, arg := range args {
		if strings.HasPrefix(arg, "--config-file") {
			if idx := strings.IndexByte(arg, '='); idx >= 0 {
				filename = arg[idx+1:]
			} else if i+1 < len(args) {
				if !strings.HasPrefix(args[i+1], "-") {
					filename = args[i+1]
				}
			}
			filename = strings.Trim(filename, "\"")
			break
		}
	}
	if filename = strings.TrimSpace(filename); filename == "" {
		filename = conffile
	}
	return utils.NewEnvironConfigReader(filename, "SERVICED_")
}