|
| 1 | +/** |
| 2 | + * @Time: 2020/8/8 17:29 |
| 3 | + |
| 4 | + * @File: migrate_list |
| 5 | + * @Software: GoLand |
| 6 | + */ |
| 7 | + |
| 8 | +package migrate |
| 9 | + |
| 10 | +import ( |
| 11 | + "fmt" |
| 12 | + "log" |
| 13 | + "time" |
| 14 | + |
| 15 | + "github.com/pkg/errors" |
| 16 | + "github.com/spf13/cobra" |
| 17 | +) |
| 18 | + |
| 19 | +var ( |
| 20 | + migrateRedisListCmd = &cobra.Command{ |
| 21 | + Use: `list <args> [flags]`, |
| 22 | + Short: "列表迁移", |
| 23 | + SilenceErrors: false, |
| 24 | + DisableAutoGenTag: false, |
| 25 | + Example: ` |
| 26 | +redis-tool migrate list {key} --source-hosts 127.0.0.1:6379 --source-auth 123456 --target-redis-cluster true --target-hosts 127.0.0.1:6379,127.0.0.1:7379 --target-auth 123456 |
| 27 | +`, |
| 28 | + RunE: func(cmd *cobra.Command, args []string) error { |
| 29 | + // 关闭资源连接 |
| 30 | + defer func() { |
| 31 | + log.Printf("source redis close err: %v", sourceRedis.Close()) |
| 32 | + log.Printf("target redis close err: %v", targetRedis.Close()) |
| 33 | + }() |
| 34 | + if len(args) < 1 { |
| 35 | + fmt.Println("至少需要一个参数") |
| 36 | + return errors.New("参数错误") |
| 37 | + } |
| 38 | + return migrateRedisList(args[0]) |
| 39 | + }, |
| 40 | + PreRunE: func(cmd *cobra.Command, args []string) error { |
| 41 | + if err = prepare(); err != nil { |
| 42 | + fmt.Println(fmt.Sprintf("prepare error: %s", err.Error())) |
| 43 | + return err |
| 44 | + } |
| 45 | + return nil |
| 46 | + }, |
| 47 | + } |
| 48 | +) |
| 49 | + |
| 50 | +func migrateRedisList(key string) error { |
| 51 | + begin := time.Now() |
| 52 | + |
| 53 | + res, err := sourceRedis.Keys(key) |
| 54 | + if err != nil { |
| 55 | + err = errors.Wrap(err, "sourceRedis.Keys") |
| 56 | + return err |
| 57 | + } |
| 58 | + |
| 59 | + fmt.Println(fmt.Sprintf("Key: [%s] 总数: [%d]", key, len(res))) |
| 60 | + |
| 61 | + for _, val := range res { |
| 62 | + v, err := sourceRedis.Get(val) |
| 63 | + if err != nil || v == "" { |
| 64 | + fmt.Println(fmt.Sprintf("迁移: [%s] --> failure: %s", val, "key不存在")) |
| 65 | + continue |
| 66 | + } |
| 67 | + |
| 68 | + if err = targetRedis.Set(val, v, sourceRedis.TTL(val)); err != nil { |
| 69 | + fmt.Println(fmt.Sprintf("迁移: [%s] --> failure: %s", val, err.Error())) |
| 70 | + continue |
| 71 | + } |
| 72 | + } |
| 73 | + fmt.Println(fmt.Sprintf("迁移完成, 用时 [%v]", time.Since(begin))) |
| 74 | + |
| 75 | + return nil |
| 76 | +} |
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