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This project listen on mysql binlog (as a slave) and send the binlog event to blinker signal. It can remember last binlog position and work as a MySQL slave.
This package uses
mysql-replication <https://github.com/noplay/python-mysql-replication>
__
to read events from MySQL's binlog and send to blinker's signal.
It will send RowsEvent only.
Whenever a binlog event come, it will be dispatched into some signals:
#. binlog_position_signal: 1 signal for the binlog current position #. binlog_signal: 1 signal for the binlog event. #. rows_signal: 1 signal for event's rows. 1 signal per row.
There are 5 signals:
binlog_position_signal
: sent whenever binlog event come to notify the
current position of binlog streambinlog_signal
: sent whenever binlog event come to notify the binlog eventrows_inserted_signal
, rows_updated_signal
, rows_deleted_signal
: sent
on the event as their nameTo connect to a signal, you can use the signal instance or a decorator.
Suppose that you need to connect to write signal on table db0.table1:
.. code-block:: python
from mysqlbinlog2blinker import signals
@signal.rows_updated.connect
def on_rows_updated_signal(table_name, rows, meta):
pass
@signal.binlog_signal.connect
def on_binlog_signal(event, stream):
pass
To start publishing signals
.. code-block:: python
from pymysqlblinker import start_publishing
start_publishing(
{
'host': 'localohst',
'user': 'root',
},
)
This package support a method to replicate from mysql database. It operates by keep memory at last binlog position. By default, it save to a file.
To make it, call:
.. code-block:: python
from pymysqlblinker import start_replication
start_replication(
{
'host': 'localohst',
'user': 'root',
},
('/path/to/file/that/remember/binlog/position', 2),
)
0.1
- First version
FAQs
This project listen on mysql binlog (as a slave) and send the binlog event to blinker signal. It can remember last binlog position and work as a MySQL slave.
We found that mysqlbinlog2blinker demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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