Refactor the fsm of procedure

apache / incubator-horaedb-meta

Meta service of HoraeDB cluster.

https://horaedb.apache.org

Apache License 2.0

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Open baojinri opened 1 year ago

baojinri commented 1 year ago

Description Now, the ddl and operation fsm in procedure are not clearly, and the error messages of fsm are mixed together.

Proposal

Sort out the state flow of ddl and operation
Use CanceledError to distinct error message, refer: https://pkg.go.dev/github.com/looplab/fsm#CanceledError

Additional context