82 lines
1.5 KiB
Go
82 lines
1.5 KiB
Go
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// Package redis provides simple Redis cache functions.
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package redis
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import (
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"context"
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"encoding/json"
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"fmt"
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"strconv"
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"strings"
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"time"
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"git.kirsle.net/apps/gosocial/pkg/log"
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"github.com/go-redis/redis/v8"
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)
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var ctx = context.Background()
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var Client *redis.Client
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/*
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Setup the Redis connection.
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The addr format is like:
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- localhost:6379
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- localhost:6379/6
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The latter format to specify the DB number if not the default (0).
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*/
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func Setup(addr string) error {
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// Parse the addr string.
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parts := strings.Split(addr, "/")
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addr = parts[0]
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db := 0
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if len(parts) > 1 && len(parts[1]) > 0 {
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a, err := strconv.Atoi(parts[1])
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if err != nil {
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return fmt.Errorf("redis DB number was not an integer: %s", err)
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}
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db = a
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}
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Client = redis.NewClient(&redis.Options{
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Addr: addr,
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DB: db,
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})
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return nil
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}
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// Set a JSON serializable object in Redis.
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func Set(key string, v interface{}, expire time.Duration) error {
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bin, err := json.Marshal(v)
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if err != nil {
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return err
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}
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log.Debug("redis.Set(%s): %s", key, bin)
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_, err = Client.Set(ctx, key, bin, expire).Result()
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if err != nil {
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return err
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}
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return nil
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}
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// Get a JSON serialized value out of Redis.
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func Get(key string, v any) error {
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val, err := Client.Get(ctx, key).Result()
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if err != nil {
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return err
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}
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log.Debug("redis.Get(%s): %s", key, val)
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return json.Unmarshal([]byte(val), v)
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}
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// Delete a key from Redis.
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func Delete(key string) error {
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return Client.Del(ctx, key).Err()
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}
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