zookeeper/main.go

// Copyright 2016 The go-qemu 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 (
	"embed"
	"os"
	"time"

	"go.wit.com/dev/alexflint/arg"
	"go.wit.com/lib/protobuf/zoopb"
	"go.wit.com/log"
)

var VERSION string
var BUILDTIME string

//go:embed resources/*
var resources embed.FS

func main() {
	var pp *arg.Parser
	pp = arg.MustParse(&argv)

	if pp == nil {
		pp.WriteHelp(os.Stdout)
		os.Exit(0)
	}

	if argv.Daemon {
		// turn off timestamps for STDOUT (systemd adds them)
		log.DaemonMode(true)
	}

	me = new(stuff)
	me.hostname, _ = os.Hostname()
	me.pollDelay = 10 * time.Second
	me.machines = new(zoopb.Machines)
	if err := me.machines.ConfigLoad(); err != nil {
		log.Warn("load config failed", err)
		os.Exit(-1)
	}
	me.targets =  make(map[string]string) // keep track of what versions the machines should be running
	me.upgrade =  make(map[string]bool) // used to trigger upgrade attempts

	go NewWatchdog()

	startHTTP()
}