louis/oktopus
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feat(controller): get env vars form .env

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This commit is contained in:
Leandro Antônio Farias Machado 2023-08-19 11:37:06 -03:00
parent 00272ff9a6
commit 274b0f51b8
2 changed files with 66 additions and 17 deletions
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13
backend/services/controller/.env
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@ -1 +1,12 @@
SECRET_API_KEY="" SECRET_API_KEY="secretkey" # !IMPORTANT: Change this to your own secret key, and don't share.
MONGO_URI=""
DEVICES_STATUS_TOPIC=""
DEVICE_PUB_TOPIC=""
BROKER_ADDR=""
BROKER_PORT=""
BROKER_TLS=""
BROKER_USERNAME=""
BROKER_PASSWORD=""
BROKER_CLIENTID=""
BROKER_QOS=""
REST_API_PORT=""

70
backend/services/controller/cmd/oktopus/main.go
View File

@ -5,15 +5,17 @@ package main
import ( import (
"context" "context"
"flag" "flag"
"log"
"os"
"os/signal"
"strconv"
"sync"
"syscall"
"github.com/joho/godotenv" "github.com/joho/godotenv"
"github.com/leandrofars/oktopus/internal/api" "github.com/leandrofars/oktopus/internal/api"
"github.com/leandrofars/oktopus/internal/db" "github.com/leandrofars/oktopus/internal/db"
usp_msg "github.com/leandrofars/oktopus/internal/usp_message" usp_msg "github.com/leandrofars/oktopus/internal/usp_message"
"log"
"os"
"os/signal"
"sync"
"syscall"
"github.com/leandrofars/oktopus/internal/mqtt" "github.com/leandrofars/oktopus/internal/mqtt"
"github.com/leandrofars/oktopus/internal/mtp" "github.com/leandrofars/oktopus/internal/mtp"
@ -43,19 +45,26 @@ func main() {
log.SetFlags(log.LstdFlags | log.Lshortfile) log.SetFlags(log.LstdFlags | log.Lshortfile)
/*
App variables priority:
1º - Flag through command line.
2º - Env variables.
3º - Default flag value
*/
log.Println("Starting Oktopus Project TR-369 Controller Version:", VERSION) log.Println("Starting Oktopus Project TR-369 Controller Version:", VERSION)
// fl_endpointId := flag.String("endpoint_id", "proto::oktopus-controller", "Defines the enpoint id the Agent must trust on.") // fl_endpointId := flag.String("endpoint_id", "proto::oktopus-controller", "Defines the enpoint id the Agent must trust on.")
flDevicesTopic := flag.String("d", "oktopus/+/status/+", "That's the topic mqtt broker end new devices info.") flDevicesTopic := flag.String("d", lookupEnvOrString("DEVICES_STATUS_TOPIC", "oktopus/+/status/+"), "That's the topic mqtt broker end new devices info.")
flSubTopic := flag.String("sub", "oktopus/+/controller/+", "That's the topic agent must publish to, and the controller keeps on listening.") flSubTopic := flag.String("sub", lookupEnvOrString("DEVICE_PUB_TOPIC", "oktopus/+/controller/+"), "That's the topic agent must publish to, and the controller keeps on listening.")
flBrokerAddr := flag.String("a", "localhost", "Mqtt broker adrress") flBrokerAddr := flag.String("a", lookupEnvOrString("BROKER_ADDR", "localhost"), "Mqtt broker adrress")
flBrokerPort := flag.String("p", "1883", "Mqtt broker port") flBrokerPort := flag.String("p", lookupEnvOrString("BROKER_PORT", "1883"), "Mqtt broker port")
flTlsCert := flag.Bool("tls", false, "Connect to broker over TLS") flTlsCert := flag.Bool("tls", lookupEnvOrBool("BROKER_TLS", false), "Connect to broker over TLS")
flBrokerUsername := flag.String("u", "", "Mqtt broker username") flBrokerUsername := flag.String("u", lookupEnvOrString("BROKER_USERNAME", ""), "Mqtt broker username")
flBrokerPassword := flag.String("P", "", "Mqtt broker password") flBrokerPassword := flag.String("P", lookupEnvOrString("BROKER_PASSWORD", ""), "Mqtt broker password")
flBrokerClientId := flag.String("i", "", "A clientid for the Mqtt connection") flBrokerClientId := flag.String("i", lookupEnvOrString("BROKER_CLIENTID", ""), "A clientid for the Mqtt connection")
flBrokerQos := flag.Int("q", 0, "Quality of service of mqtt messages delivery") flBrokerQos := flag.Int("q", lookupEnvOrInt("BROKER_QOS", 0), "Quality of service of mqtt messages delivery")
flAddrDB := flag.String("mongo", "mongodb://localhost:27017/", "MongoDB URI") flAddrDB := flag.String("mongo", lookupEnvOrString("MONGO_URI", "mongodb://localhost:27017/"), "MongoDB URI")
flApiPort := flag.String("ap", "8000", "Rest api port") flApiPort := flag.String("ap", lookupEnvOrString("REST_API_PORT", "8000"), "Rest api port")
flHelp := flag.Bool("help", false, "Help") flHelp := flag.Bool("help", false, "Help")
flag.Parse() flag.Parse()
@ -101,3 +110,32 @@ func main() {
log.Println("(⌐■_■) Oktopus is out!") log.Println("(⌐■_■) Oktopus is out!")
} }
func lookupEnvOrString(key string, defaultVal string) string {
if val, _ := os.LookupEnv(key); val != "" {
return val
}
return defaultVal
}
func lookupEnvOrInt(key string, defaultVal int) int {
if val, _ := os.LookupEnv(key); val != "" {
v, err := strconv.Atoi(val)
if err != nil {
log.Fatalf("LookupEnvOrInt[%s]: %v", key, err)
}
return v
}
return defaultVal
}
func lookupEnvOrBool(key string, defaultVal bool) bool {
if val, _ := os.LookupEnv(key); val != "" {
v, err := strconv.ParseBool(val)
if err != nil {
log.Fatalf("LookupEnvOrInt[%s]: %v", key, err)
}
return v
}
return defaultVal
}