What's the detail of BinLogStreamReader's option "only_schemas"?

[郭枫]

From BinLogStreamReader Doc, BinLogStreamReader has an option "only_schemas=None", I wonder which method does  Python-MySQL-replication use to limit just  the schema I want, for example: if a binlog file countains testA、testB、testC three databases, and I just write "only_schemas=testA"~

Method 1: Python-MySQL-replication read binlog and parse all three
database-- testA、testB、testC, but just gives the sql that contains testA
method
 2: Python-MySQL-replication encode text 'testA' to binary format text
MySQL use for binlog, then read binlog and find binary section that
contains encoded text 'testA', then convert  binary section to sql

[Julien Duponchelle]

Hi,

The lib don't convert to SQL it's read the binlog entry. If it's SQL it's return SQL otherwise it's parse the event.

If you choose to ignore a schema only the event header is read but it will parse event details (like updated row).

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