go/src/v.io/x/sensorlog/measured/measured.go

// Copyright 2015 The Vanadium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// measured is the Sensor Log measuring daemon. Runs on any device, sampling
// data points and writing them to Syncbase. Sampling configuration is read
// from Syncbase as written by the client.
package main

import (
	"flag"
	"os"

	"v.io/v23"
	"v.io/x/lib/vlog"
	"v.io/x/ref/lib/signals"
	_ "v.io/x/ref/runtime/factories/generic"
	"v.io/x/sensorlog_lite/internal/config"
	"v.io/x/sensorlog_lite/internal/util"
)

var (
	flagSbService = flag.String("service", config.DefaultSbService, "Location of the Syncbase service to connect to. Can be absolute or relative to the namespace root.")
)

func main() {
	os.Exit(runMain())
}

func runMain() int {
	ctx, shutdown := v23.Init()
	defer shutdown()
	vlog.VI(2).Infof("Default blessings: %v", v23.GetPrincipal(ctx).BlessingStore().Default())

	db, err := util.CreateOrOpenDB(ctx, *flagSbService)
	if err != nil {
		vlog.Errorf("Failed opening Syncbase db: %v", err)
		return 1
	}
	vlog.VI(0).Infof("measured connected to %s", db.FullName())

	<-signals.ShutdownOnSignals(ctx)
	return 0
}