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caching.go
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caching.go
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package utils
import (
"context"
"encoding/json"
"github.com/go-redis/redis/v8"
"go.uber.org/zap"
"time"
)
type Caching struct {
r *redis.Client
logger *zap.SugaredLogger
}
func NewCachingService(r *redis.Client, logger *zap.SugaredLogger) *Caching {
return &Caching{
r: r,
logger: logger,
}
}
func (s *Caching) ClearAll() {
s.logger.Info("Drop all cache!")
s.r.FlushAll(context.Background())
}
type CachedArray struct {
Data []map[string]interface{} `json:"data"`
UpdatedAt string `json:"updated_at"`
}
type CachedMap struct {
Data map[string]interface{} `json:"data"`
UpdatedAt string `json:"updated_at"`
}
func (s *Caching) FromCacheArray(key string) CachedArray {
cmd := s.r.Get(context.Background(), key)
data := []byte(cmd.Val())
var object CachedArray
err := json.Unmarshal(data, &object)
if err != nil {
s.logger.Error(err)
}
return object
}
func (s *Caching) FromCacheMap(key string) CachedMap {
cmd := s.r.Get(context.Background(), key)
data := []byte(cmd.Val())
var object CachedMap
err := json.Unmarshal(data, &object)
if err != nil {
s.logger.Error(err)
}
return object
}
func (s *Caching) ToCache(key string, value interface{}) {
data := make(map[string]interface{})
data["data"] = value
data["updated_at"] = time.Now().Format(time.RFC3339)
jsonString, _ := json.Marshal(data)
status := s.r.Set(context.Background(), key, jsonString, 0)
_, err := status.Result()
if err != nil {
s.logger.Error(err)
} else {
s.logger.Info("Key Updated ", "Key ", key, "value ", value)
}
}
func (s *Caching) Drop(key string) {
s.logger.Info("Key Deleted ", "Key", key)
status := s.r.Del(context.Background(), key)
_, err := status.Result()
if err != nil {
s.logger.Error(err)
}
}