Ecco
MySQL replication binlog parser using mysql-binlog-connector-java.
Installation
Add this line to your application's Gemfile:
gem "ecco"
And then execute:
$ bundle
Or install it yourself as:
$ gem install ecco
Usage
require "ecco"
hostname = "localhost" # Optional
port = 3306 # Optional
username = "username"
password = "password"
client = Ecco::Client.new(hostname: hostname, port: port, username: username, password: password)
client.on_row_event do |row_event|
type = row_event.type
database = row_event.database
table = row_event.table
rows = row_event.rows
next unless database == "FooDatabase"
next unless table == "FooTable"
second_column = rows.first[1]
puts "Row event: #{database} #{table} #{type} #{second_column}"
end
client.on_save_position do |filename, position|
puts "Save event: #{filename} #{position}"
end
client.on_communication_failure do |client, error|
puts error.
end
# Optionally set a starting position
client.set_binlog_filename("mysql-bin.000009")
client.set_binlog_position(276753)
client.start
Development
To download a new version of mysql-binlog-connector-java
rake maven:dependencies
Note: You need Maven to download
brew install maven
Run the tests
bin/specs
For an interactive prompt
bin/console
To install this gem onto your local machine
bundle exec rake install
Integration tests
The integration tests don't run by default. To run all the tests, including integration, use
bin/all_specs
The tests needs a MySQL server with replication enabled.
Ecco includes a Vagrant machine, that can be used for this. Note that your Vagrant host need to have Ansible installed as it is used for provisioning.
Just start it before running the tests
vagrant up
Note: Stop any local mysql servers first as it forwards mysql to localhost:3306.
Release
To release a new version, make a commit bumping the version number in version.rb
, and then run
bundle exec rake release
which will create a git tag for the version, push git commits and tags, and push the .gem
file to rubygems.org.
License
The gem is available as open source under the terms of the Apache License, Version 2.0.