Redis 7 Support

[ronaldpetty]

Hello, I just gave the rdb tool a try against an RDB file from Redis 7 rc 2.

~/replication$ rdb --command diff ./master/dump.rdb
Traceback (most recent call last):
  File "/usr/local/bin/rdb", line 11, in <module>
    load_entry_point('rdbtools==0.1.15', 'console_scripts', 'rdb')()
  File "/home/ubuntu/.local/lib/python3.8/site-packages/rdbtools/cli/rdb.py", line 106, in main
    parser.parse(options.dump_file[0])
  File "/home/ubuntu/.local/lib/python3.8/site-packages/rdbtools/parser.py", line 394, in parse
    self.parse_fd(open(filename, "rb"))
  File "/home/ubuntu/.local/lib/python3.8/site-packages/rdbtools/parser.py", line 399, in parse_fd
    self.verify_version(f.read(4))
  File "/home/ubuntu/.local/lib/python3.8/site-packages/rdbtools/parser.py", line 963, in verify_version
    raise Exception('verify_version', 'Invalid RDB version number %d' % version)
Exception: ('verify_version', 'Invalid RDB version number 10')

Just for giggles, I changed the 10 to a 09 and it seems to work (at least diffing).

[smilyFw]

   您好，我已收到您的邮件，谢谢！！~~

[ronaldpetty]

别客气

#186

[madolson]

It should mostly work, there are a couple of new RDB op codes like functions that need to be supported.

[smilyFw]

   您好，我已收到您的邮件，谢谢！！~~

[ChenWei-XiaoYi]

这是来自QQ邮箱的假期自动回复邮件。您好，我最近正在休假中，无法亲自回复您的邮件。我将在假期结束后，尽快给您回复。

[rhuddleston]

on upgrade Hash types are auto-converted RDB_TYPE_HASH -> RDB_TYPE_HASH_LISTPACK so at a minimum rdb-tools will need to be upgraded to understand how to decode HASH_LISTPACK objects.

redis/redis#8887

[smilyFw]

   您好，我已收到您的邮件，谢谢！！~~