home_data/gatherer/main.go

package main

import (
	"fmt"
	"io/ioutil"
	"log"
	"os"
	"strings"
)

func failOnError(err error, msg string) {
	if err != nil {
		log.Panicf("%s: %s", msg, err)
	}
}

func main() {

	amqpConn := new(AMQPConnection)
	amqpConn.Init()
	err := amqpConn.Connect()
	defer amqpConn.Close()
	failOnError(err, "Failed to connect to RabbitMQ")

	// read token from /token/read_write_token.txt file
	token_file := "/tokens/read_write.txt"
	token_bytes, err := ioutil.ReadFile(token_file)
	failOnError(err, "Failed to read token file")
	influx_token := strings.TrimSpace(string(token_bytes))
	fmt.Println("InfluxDB token:")
	fmt.Println(strings.TrimSpace(string(influx_token)))

	influx := new(InfluxWriter)
	influx.Init(
		os.Getenv("INFLUX_URL"),
		strings.TrimSpace(string(influx_token)),
		os.Getenv("INFLUX_ORG"),
		os.Getenv("INFLUX_BUCKET"),
	)

	// create exchange
	err = amqpConn.channel.ExchangeDeclare(
		"amq.topic", // name
		"topic",     // type
		true,        // durable
		false,       // auto-deleted
		false,       // internal
		false,       // no-wait
		nil,         // arguments
	)
	failOnError(err, "Failed to declare an exchange")

	var forever chan struct{}

	shellPipe := new(Piper)
	shellPipe.Start(influx, amqpConn, "shelly", "shellies.#", ShellyConverter)

	tasmotaPipe := new(Piper)
	tasmotaPipe.Start(influx, amqpConn, "tasmota", "tele.#.SENSOR", TasmotaConverter)

	log.Printf(" [*] Waiting for logs. To exit press CTRL+C")
	<-forever

}