Using DynamoDB consistent read to enforce message order from SQS.
Add this line to your application's Gemfile:
gem 'alephant-sequencer'
And then execute:
$ bundle
Or install it yourself as:
$ gem install alephant-sequencer
require "alephant/sequencer"
# Ensure you check your AWS region configuration before you start using `AWS.config.region`
# To set the value use: AWS.config(region: 'eu-west-1')
table_name = "foo"
component_id = "bar_baz/e8c81cbbbeb3967a423bb49e352eed0e"
sequence_id = "$.sequence_number" # Optional JSONPath (specifying location of sequence_id)
sequencer = Alephant::Sequencer.create(table_name, component_id, sequence_id)
# Data from SQS message
json = JSON.generate({ :sequence_number => 3 })
msg = Struct.new(:body).new(json)
# Sets last seen id
sequencer.set_last_seen(msg)
# Gets last seen id
sequencer.get_last_seen
# => 3
# Is the message sequential?
sequencer.sequential?(msg)
# Reset sequence
sequencer.delete!- Fork it ( http://github.com//alephant-sequencer/fork )
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Add some feature') - Push to the branch (
git push origin my-new-feature) - Create new Pull Request
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