6487f03c4a
- 后端：init/upload/status/complete 四个分片上传接口 - 后端：基于 Redis 的上传会话管理，支持断点续传 - 后端：分片 MD5 校验、幂等上传、顺序合并 - 测试：覆盖完整上传流程、断点续传、幂等性、哈希校验、未完成合并、状态查询 - 前端：Vue 3 分片上传组件，支持并发上传与进度展示
116 lines
2.4 KiB
Go
116 lines
2.4 KiB
Go
package redis
|
|
|
|
import (
|
|
"context"
|
|
"crypto/rand"
|
|
"encoding/hex"
|
|
"feedsystem_video_go/internal/config"
|
|
"fmt"
|
|
"strconv"
|
|
"time"
|
|
|
|
redis "github.com/redis/go-redis/v9"
|
|
)
|
|
|
|
type Client struct {
|
|
rdb *redis.Client
|
|
keyPrefix string
|
|
}
|
|
|
|
const defaultKeyPrefix = "v1:"
|
|
|
|
func NewClient(rdb *redis.Client, keyPrefix string) *Client {
|
|
return &Client{rdb: rdb, keyPrefix: keyPrefix}
|
|
}
|
|
|
|
func NewFromEnv(cfg *config.RedisConfig) (*Client, error) {
|
|
rdb := redis.NewClient(&redis.Options{
|
|
Addr: cfg.Host + ":" + strconv.Itoa(cfg.Port),
|
|
Password: cfg.Password,
|
|
DB: cfg.DB,
|
|
})
|
|
return &Client{rdb: rdb, keyPrefix: defaultKeyPrefix}, nil
|
|
}
|
|
|
|
func (c *Client) Close() error {
|
|
if c == nil || c.rdb == nil {
|
|
return nil
|
|
}
|
|
return c.rdb.Close()
|
|
}
|
|
|
|
func (c *Client) Ping(ctx context.Context) error {
|
|
if c == nil || c.rdb == nil {
|
|
return nil
|
|
}
|
|
return c.rdb.Ping(ctx).Err()
|
|
}
|
|
|
|
func IsMiss(err error) bool {
|
|
return err == redis.Nil
|
|
}
|
|
|
|
func (c *Client) Key(format string, args ...any) string {
|
|
prefix := ""
|
|
if c != nil {
|
|
prefix = c.keyPrefix
|
|
}
|
|
return prefix + fmt.Sprintf(format, args...)
|
|
}
|
|
|
|
func randToken(n int) (string, error) {
|
|
b := make([]byte, n)
|
|
if _, err := rand.Read(b); err != nil {
|
|
return "", err
|
|
}
|
|
return hex.EncodeToString(b), nil
|
|
}
|
|
|
|
func (c *Client) Lock(ctx context.Context, key string, ttl time.Duration) (token string, ok bool, err error) {
|
|
if c == nil || c.rdb == nil {
|
|
return "", false, nil
|
|
}
|
|
token, err = randToken(16)
|
|
if err != nil {
|
|
return "", false, err
|
|
}
|
|
ok, err = c.rdb.SetNX(ctx, key, token, ttl).Result()
|
|
return token, ok, err
|
|
}
|
|
|
|
var unlockScript = redis.NewScript(`
|
|
if redis.call("GET", KEYS[1]) == ARGV[1] then
|
|
return redis.call("DEL", KEYS[1])
|
|
else
|
|
return 0
|
|
end
|
|
`)
|
|
|
|
var incrementWithExpireScript = redis.NewScript(`
|
|
local count = redis.call("INCR", KEYS[1])
|
|
if count == 1 then
|
|
redis.call("PEXPIRE", KEYS[1], ARGV[1])
|
|
end
|
|
return count
|
|
`)
|
|
|
|
func (c *Client) Unlock(ctx context.Context, key string, token string) error {
|
|
if c == nil || c.rdb == nil {
|
|
return nil
|
|
}
|
|
_, err := unlockScript.Run(ctx, c.rdb, []string{key}, token).Result()
|
|
return err
|
|
}
|
|
|
|
func (c *Client) IncrementWithExpire(ctx context.Context, key string, expire time.Duration) (int64, error) {
|
|
if c == nil || c.rdb == nil {
|
|
return 0, nil
|
|
}
|
|
return incrementWithExpireScript.Run(
|
|
ctx,
|
|
c.rdb,
|
|
[]string{key},
|
|
expire.Milliseconds(),
|
|
).Int64()
|
|
}
|