Maxwell

`cargo tree` , `cargo udeps` and `cargo sort` may help

Tested AWS CloudWatch in #258 . Since there is a quota for each log stream, this may find another way to handle the logs.

Try to use EventBridge to transfer audit event logs to CloudWatch. And add SQL digest in the future.

Using AWS EventBridge as a mpsc AuditChannel, every proxy should sink their SQL audit event to the channel, the AuditServer will consume AuditChannel events and send it to AWS EventBridge.

Considering `ECDS` in xDS for better communication.

> @mlycore @wbtlb @xuanyuan300 I'm so sorry to everyone, because I've been very busy recently, this issue can't be completed in time. If there is a dead time for this...

It is useful for backend database endpoint rolling upgrade without any discruptions of applications.

Unit test : - [x] Pisa-Controller configuration conversion - #228 - #231 - #236 - [ ] Pisa-Proxy protocol - [ ] Pisa-Proxy runtime handle command - [ ] Pisa-Proxy...

Integration test: - [ ] TrafficStrategy with Simple Loadbalancing - [ ] TrafficStrategy with Static Read Write Splitting - [ ] TrafficStrategy with Dynamic Read Write Splitting - [ ]...

> 您好，感觉写的很详细，很不错。我这边有一些关于读写分离规则细节想要问一下，我们这边读写分离规则只是针对数据库datasource进行区分，至于具体的执行 sql 相关的信息以及规则管理，我们目前不关心是不？ 您好！用户需要的话是可以在识别 SQL 的时候使用正则表达式、条件表达式进行匹配和抓取，或者基于 Metrics 的自动发现，然后再路由到特定的数据源。