This is a pre-production deployment of Warehouse, however changes made here WILL affect the production instance of PyPI.
Latest Version Dependencies status unknown Test status unknown Test coverage unknown
Project Description
Python MySQL Replication Blinker
================================

Features
--------

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.

- binlog action level
- schema level
- table level
- row level

It will send RowsEvent only.

Whenever a binlog event come, it will be dispatched into some signals:

#. binlog\_signal: 1 signal for the binlog event.
#. schema\_signal: 1 signal for the event's schema
#. table\_signal: 1 signal for the event's table.
#. row\_signal: 1+ signals for event's rows. 1 signal per row.

Signals
-------

.. code-block::

binlog event -> binlog signal -> schema signal -> table signal --> row signals

So, suppose that an event come with schema=foo, table=bar and it updated
2 rows. Those signal will be sent:

+-----------------+--------------------------+------------------------------+
| signal | signal name | sender |
+=================+==========================+==============================+
| binlog signal | ``update`` | event (RowsEvent) |
+-----------------+--------------------------+------------------------------+
| schema signal | ``update@foo`` | event (RowsEvent) |
+-----------------+--------------------------+------------------------------+
| table signal | ``update@foo.bar`` | event.rows (list of array) |
+-----------------+--------------------------+------------------------------+
| row signal | ``update@foo.bar#row`` | row1 (array) |
+-----------------+--------------------------+------------------------------+
| row signal | ``update@foo.bar#row`` | row2 object (array) |
+-----------------+--------------------------+------------------------------+

Connect to signals
------------------

To 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 pymysqlblinker import signals

tbl1_signal = signals.table_write('db0', 'table1')

def subscriber1(rows, schema, table):
pass

# use connect function
tbl1_signal.connect(subscriber1)

# or use decorator
@signals.on_table_write('db0', 'table1')
def subscriber1(rows, schema, table):
pass

Signal publishing
-----------------

To start publishing signals

.. code-block:: python

from pymysqlblinker import start_publishing

start_publishing(
'mysql://root@localhost',
)

Replication
-----------

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(
'mysql://root@localhost',
'/path/to/file/that/remember/binlog/position',
)

Change logs
-----------

1.2
~~~

- Add BinlogPosMemory to allow replication: replication is publishing
with
ability to remember last binlog position. For the first run, it will
start at
the end of current binlog.

1.1.1
~~~~~

- Add connect\_timeout argument to pub.start\_publishing
Release History

Release History

1.2

This version

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

1.1.1

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

Download Files

Download Files

TODO: Brief introduction on what you do with files - including link to relevant help section.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
pymysqlblinker-1.2.tar.gz (5.8 kB) Copy SHA256 Checksum SHA256 Source Aug 18, 2015

Supported By

WebFaction WebFaction Technical Writing Elastic Elastic Search Pingdom Pingdom Monitoring Dyn Dyn DNS HPE HPE Development Sentry Sentry Error Logging CloudAMQP CloudAMQP RabbitMQ Heroku Heroku PaaS Kabu Creative Kabu Creative UX & Design Fastly Fastly CDN DigiCert DigiCert EV Certificate Rackspace Rackspace Cloud Servers DreamHost DreamHost Log Hosting