init redis

pkg/redis/connection.go

@@ -0,0 +1,30 @@
+package redis
+
+import (
+	"context"
+	"os"
+	"time"
+
+	"github.com/redis/go-redis/v9"
+)
+
+func NewRedis() (*redis.Client, error) {
+	addr := os.Getenv("REDIS_ADDR")
+	if addr == "" {
+		addr = "localhost:6379"
+	}
+
+	rdb := redis.NewClient(&redis.Options{
+		Addr: addr,
+	})
+
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	// cek koneksi saat startup
+	if err := rdb.Ping(ctx).Err(); err != nil {
+		return nil, err
+	}
+
+	return rdb, nil
+}

pkg/redis/redis-auth.go

@@ -0,0 +1,90 @@
+package redis
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"satusehat-rssa/internal/model"
+	"strings"
+
+	"github.com/redis/go-redis/v9"
+)
+
+type RedisAkses struct {
+	akses *model.Akses
+}
+
+type RedisInterface interface {
+	GetOrCreateTokenSS(ctx context.Context) (string, error)
+}
+
+func NewRedisAuth(akses *model.Akses) RedisInterface {
+	return &RedisAkses{
+		akses: akses,
+	}
+
+}
+
+func (s *RedisAkses) GetOrCreateTokenSS(ctx context.Context) (string, error) {
+	const redisKey = "token-ss"
+
+	// 1️⃣ ambil dari redis
+	token, err := s.akses.Redis.Get(ctx, redisKey).Result()
+	if err == nil && token != "" {
+		return token, nil
+	}
+
+	// redis error selain key not found
+	if err != nil && err != redis.Nil {
+		return "", err
+	}
+
+	// 2️⃣ generate token baru
+	oauth := model.OauthRequest{
+		ClientId:     s.akses.ClientId,
+		ClientSecret: s.akses.ClientSecret,
+	}
+
+	obj_token, err := s.GenerateToken(oauth)
+	if err != nil {
+		return "", err
+	}
+
+	// 3️⃣ simpan ke redis (opsional TTL)
+	if err := s.akses.Redis.Set(ctx, redisKey, obj_token.AccessToken, 0).Err(); err != nil {
+		return "", err
+	}
+
+	return obj_token.AccessToken, nil
+}
+
+func (o *RedisAkses) GenerateToken(req model.OauthRequest) (*model.OauthResponse, error) {
+	var (
+		data *model.OauthResponse
+	)
+	url := o.akses.AuthUrl + "/accesstoken?grant_type=client_credentials"
+	method := "POST"
+
+	req_data := "client_id=" + req.ClientId + "&client_secret=" + req.ClientSecret
+	payload := strings.NewReader(req_data)
+
+	client := &http.Client{}
+	request, err := http.NewRequest(method, url, payload)
+
+	if err != nil {
+		return nil, err
+	}
+	request.Header.Add("Content-Type", "application/x-www-form-urlencoded")
+
+	res, err := client.Do(request)
+	if err != nil {
+		return nil, err
+	}
+	defer res.Body.Close()
+
+	err = json.NewDecoder(res.Body).Decode(&data)
+	if err != nil {
+		return nil, err
+	}
+	return data, nil
+}