[JOH-37] Migrate from Config to Envs

.env.template

@@ -0,0 +1,22 @@
+APP_PORT=3004
+APP_ENV=development
+APP_SECRET=secret
+
+DB_URL=postgres://root:root@localhost:5432/johnjud_db
+
+JWT_SECRET=secret
+JWT_EXPIRES_IN=3600
+JWT_REFRESH_TOKEN_TTL=604800
+JWT_ISSUER=issuer
+JWT_RESET_TOKEN_TTL=900
+
+REDIS_HOST=localhost
+REDIS_PORT=6379
+REDIS_PASSWORD=
+
+AUTH_CLIENT_URL=http://localhost:3000
+
+SENDGRID_API_KEY=api_key
+SENDGRID_NAME=johnjud
+SENDGRID_ADDRESS=johnjud@gmail.com
+

Dockerfile

@@ -16,9 +16,6 @@ COPY . .
 # Build the application
 RUN go build -o server ./cmd/main.go
 
-# Copy config files
-COPY ./config ./config
-
 # Adding the grpc_health_probe
 RUN GRPC_HEALTH_PROBE_VERSION=v0.3.1 && \
     wget -qO/bin/grpc_health_probe https://github.com/grpc-ecosystem/grpc-health-probe/releases/download/${GRPC_HEALTH_PROBE_VERSION}/grpc_health_probe-linux-amd64 && \
@@ -36,9 +33,6 @@ COPY --from=base /bin/grpc_health_probe ./
 # Copy execute file
 COPY --from=base /app/server ./
 
-# Copy config files
-COPY --from=base /app/config ./config
-
 # Set ENV to production
 ENV GO_ENV production
 

Makefile

@@ -1,5 +1,5 @@
 server:
-	go run ./cmd/.
+	. ./tools/export-env.sh ; go run ./cmd/.
 
 mock-gen:
 	mockgen -source ./pkg/repository/cache/cache.repository.go -destination ./mocks/repository/cache/cache.mock.go

cfgldr/config.go

@@ -1,74 +1,119 @@
 package cfgldr
 
 import (
-	"github.com/pkg/errors"
 	"github.com/spf13/viper"
 )
 
 type Database struct {
-	Host     string `mapstructure:"host"`
-	Port     int    `mapstructure:"port"`
-	Name     string `mapstructure:"name"`
-	Username string `mapstructure:"username"`
-	Password string `mapstructure:"password"`
-	SSL      string `mapstructure:"ssl"`
+	Url string `mapstructure:"URL"`
 }
 
 type App struct {
-	Port   int    `mapstructure:"port"`
-	Debug  bool   `mapstructure:"debug"`
-	Secret string `mapstructure:"secret"`
+	Port   int    `mapstructure:"PORT"`
+	Env    string `mapstructure:"ENV"`
+	Secret string `mapstructure:"SECRET"`
 }
 
 type Jwt struct {
-	Secret          string `mapstructure:"secret"`
-	ExpiresIn       int    `mapstructure:"expires_in"`
-	RefreshTokenTTL int    `mapstructure:"refresh_token_ttl"`
-	Issuer          string `mapstructure:"issuer"`
-	ResetTokenTTL   int    `mapstructure:"reset_token_ttl"`
+	Secret          string `mapstructure:"SECRET"`
+	ExpiresIn       int    `mapstructure:"EXPIRES_IN"`
+	RefreshTokenTTL int    `mapstructure:"REFRESH_TOKEN_TTL"`
+	Issuer          string `mapstructure:"ISSUER"`
+	ResetTokenTTL   int    `mapstructure:"RESET_TOKEN_TTL"`
 }
 
 type Redis struct {
-	Host     string `mapstructure:"host"`
-	Port     int    `mapstructure:"port"`
-	Password string `mapstructure:"password"`
+	Host     string `mapstructure:"HOST"`
+	Port     int    `mapstructure:"PORT"`
+	Password string `mapstructure:"PASSWORD"`
 }
 
 type Auth struct {
-	ClientURL string `mapstructure:"client_url"`
+	ClientURL string `mapstructure:"CLIENT_URL"`
 }
 
 type Sendgrid struct {
-	ApiKey  string `mapstructure:"api_key"`
-	Name    string `mapstructure:"name"`
-	Address string `mapstructure:"address"`
+	ApiKey  string `mapstructure:"API_KEY"`
+	Name    string `mapstructure:"NAME"`
+	Address string `mapstructure:"ADDRESS"`
 }
 
 type Config struct {
-	App      App      `mapstructure:"app"`
-	Database Database `mapstructure:"database"`
-	Jwt      Jwt      `mapstructure:"jwt"`
-	Redis    Redis    `mapstructure:"redis"`
-	Auth     Auth     `mapstructure:"auth"`
-	Sendgrid Sendgrid `mapstructure:"sendgrid"`
+	App      App
+	Database Database
+	Jwt      Jwt
+	Redis    Redis
+	Auth     Auth
+	Sendgrid Sendgrid
 }
 
-func LoadConfig() (config *Config, err error) {
-	viper.AddConfigPath("./config")
-	viper.SetConfigName("config")
-	viper.SetConfigType("yaml")
+func LoadConfig() (*Config, error) {
+	dbCfgLdr := viper.New()
+	dbCfgLdr.SetEnvPrefix("DB")
+	dbCfgLdr.AutomaticEnv()
+	dbCfgLdr.AllowEmptyEnv(false)
+	dbConfig := Database{}
+	if err := dbCfgLdr.Unmarshal(&dbConfig); err != nil {
+		return nil, err
+	}
+
+	appCfgLdr := viper.New()
+	appCfgLdr.SetEnvPrefix("APP")
+	appCfgLdr.AutomaticEnv()
+	appCfgLdr.AllowEmptyEnv(false)
+	appConfig := App{}
+	if err := appCfgLdr.Unmarshal(&appConfig); err != nil {
+		return nil, err
+	}
+
+	jwtCfgLdr := viper.New()
+	jwtCfgLdr.SetEnvPrefix("JWT")
+	jwtCfgLdr.AutomaticEnv()
+	jwtCfgLdr.AllowEmptyEnv(false)
+	jwtConfig := Jwt{}
+	if err := jwtCfgLdr.Unmarshal(&jwtConfig); err != nil {
+		return nil, err
+	}
 
-	viper.AutomaticEnv()
+	redisCfgLdr := viper.New()
+	redisCfgLdr.SetEnvPrefix("REDIS")
+	redisCfgLdr.AutomaticEnv()
+	redisCfgLdr.AllowEmptyEnv(false)
+	redisConfig := Redis{}
+	if err := redisCfgLdr.Unmarshal(&redisConfig); err != nil {
+		return nil, err
+	}
+
+	authCfgLdr := viper.New()
+	authCfgLdr.SetEnvPrefix("AUTH")
+	authCfgLdr.AutomaticEnv()
+	authCfgLdr.AllowEmptyEnv(false)
+	authConfig := Auth{}
+	if err := authCfgLdr.Unmarshal(&authConfig); err != nil {
+		return nil, err
+	}
 
-	err = viper.ReadInConfig()
-	if err != nil {
-		return nil, errors.Wrap(err, "error occurs while reading the config")
+	sendgridCfgLdr := viper.New()
+	sendgridCfgLdr.SetEnvPrefix("SENDRID")
+	sendgridCfgLdr.AutomaticEnv()
+	sendgridCfgLdr.AllowEmptyEnv(false)
+	sendgridConfig := Sendgrid{}
+	if err := sendgridCfgLdr.Unmarshal(&sendgridConfig); err != nil {
+		return nil, err
 	}
 
-	err = viper.Unmarshal(&config)
-	if err != nil {
-		return nil, errors.Wrap(err, "error occurs while unmarshal the config")
+	config := &Config{
+		Database: dbConfig,
+		App:      appConfig,
+		Jwt:      jwtConfig,
+		Redis:    redisConfig,
+		Auth:     authConfig,
+		Sendgrid: sendgridConfig,
 	}
 
-	return
+	return config, nil
+}
+
+func (ac *App) IsDevelopment() bool {
+	return ac.Env == "development"
 }

cmd/main.go

@@ -3,6 +3,13 @@ package main
 import (
 	"context"
 	"fmt"
+	"net"
+	"os"
+	"os/signal"
+	"sync"
+	"syscall"
+	"time"
+
 	"github.com/isd-sgcu/johnjud-auth/cfgldr"
 	"github.com/isd-sgcu/johnjud-auth/database"
 	authRp "github.com/isd-sgcu/johnjud-auth/internal/repository/auth"
@@ -13,12 +20,6 @@ import (
 	jwtSvc "github.com/isd-sgcu/johnjud-auth/internal/service/jwt"
 	tokenSvc "github.com/isd-sgcu/johnjud-auth/internal/service/token"
 	userSvc "github.com/isd-sgcu/johnjud-auth/internal/service/user"
-	"net"
-	"os"
-	"os/signal"
-	"sync"
-	"syscall"
-	"time"
 
 	"github.com/isd-sgcu/johnjud-auth/internal/strategy"
 	"github.com/isd-sgcu/johnjud-auth/internal/utils"
@@ -96,7 +97,7 @@ func main() {
 			Msg("Failed to load config")
 	}
 
-	db, err := database.InitPostgresDatabase(&conf.Database, conf.App.Debug)
+	db, err := database.InitPostgresDatabase(&conf.Database, conf.App.IsDevelopment())
 	if err != nil {
 		log.Fatal().
 			Err(err).

database/postgresql.connection.go

@@ -1,25 +1,21 @@
 package database
 
 import (
-	"fmt"
 	"github.com/isd-sgcu/johnjud-auth/cfgldr"
 	"github.com/isd-sgcu/johnjud-auth/internal/domain/model"
 	"gorm.io/driver/postgres"
 	"gorm.io/gorm"
 	gormLogger "gorm.io/gorm/logger"
-	"strconv"
 )
 
 func InitPostgresDatabase(conf *cfgldr.Database, isDebug bool) (db *gorm.DB, err error) {
-	dsn := fmt.Sprintf("host=%s port=%s user=%s password=%s dbname=%s sslmode=%s", conf.Host, strconv.Itoa(conf.Port), conf.Username, conf.Password, conf.Name, conf.SSL)
-
-	gormConf := &gorm.Config{TranslateError: true}
+	gormConf := &gorm.Config{}
 
 	if !isDebug {
 		gormConf.Logger = gormLogger.Default.LogMode(gormLogger.Silent)
 	}
 
-	db, err = gorm.Open(postgres.Open(dsn), gormConf)
+	db, err = gorm.Open(postgres.Open(conf.Url), gormConf)
 	if err != nil {
 		return nil, err
 	}

docker-compose-prod.yaml

@@ -0,0 +1,56 @@
+version: "3"
+
+services:
+  auth:
+    container_name: johnjud-auth
+    restart: unless-stopped
+    build: .
+    ports:
+      - 3002:3002
+    environment:
+      - APP_PORT=3004
+      - APP_ENV=production
+      - APP_SECRET=secret
+      - DB_URL=postgres://root:root@johnjud-local-db:5432/johnjud_db
+      - JWT_SECRET=secret
+      - JWT_EXPIRES_IN=3600
+      - JWT_REFRESH_TOKEN_TTL=604800
+      - JWT_ISSUER=issuer
+      - JWT_RESET_TOKEN_TTL=900
+      - REDIS_HOST=localhost
+      - REDIS_PORT=6379
+      - REDIS_PASSWORD=
+      - AUTH_CLIENT_URL=http://localhost:3000
+      - SENDGRID_API_KEY=api_key
+      - SENDGRID_NAME=johnjud
+      - SENDGRID_ADDRESS=johnjud@gmail.com
+    networks:
+      - johnjud
+
+  local-db:
+    image: postgres:15.1-alpine3.17
+    container_name: johnjud-local-db
+    restart: unless-stopped
+    environment:
+      POSTGRES_USER: root
+      POSTGRES_PASSWORD: root
+      POSTGRES_DB: johnjud_db
+    volumes:
+      - postgres:/var/lib/postgresql/data
+    ports:
+      - "5432:5432"
+    networks:
+      - johnjud
+
+  cache:
+    image: redis
+    restart: unless-stopped
+    ports:
+      - "6379:6379"
+    networks:
+      - johnjud
+
+volumes:
+  postgres:
+networks:
+  johnjud: