Rack::Idempotent
This rack middleware intends to handle retry logic for rack-client.
Rack::Idempotent rescues and retries low-level errors and 'safe to retry' http response codes.
Default retry limit is currently set to 5.
Handled low-level Net::HTTP exceptions include:
Errno::ETIMEDOUT
Errno::ECONNREFUSED
Errno::EHOSTUNREACH
Response status codes that are retried:
- 408: Request Timeout
- 502: Bad Gateway
- 503: Service Unavailable
- 504: Gateway Timeout
If the retry limit is exceeded, Rack::Idemptotent will raise Rack::Idempotent::RetryLimitExceeded
.
The exceptions raised are stored as an array available via Rack::Idempotent::RetryLimitExceeded#idempotent_exceptions
Installation
Add this line to your application's Gemfile:
gem 'rack-idempotent'
And then execute:
$ bundle
Or install it yourself as:
$ gem install rack-idempotent
Usage
Add Rack::Idempotent as a Rack::Client middleware as close to the handler as possible:
client = Rack::Client.new do
use EY::ApiHMAC::ApiAuth::Client, *ServiceClient.hmac_keys
use Rack::Idempotent
run Rack::Client::Handler::NetHTTP
end
Running Tests
$ bundle exec rake
Contributing
- Fork it
- Create your feature branch (
git checkout -b my-new-feature
) - Commit your changes (
git commit -am 'Added some feature'
) - Push to the branch (
git push origin my-new-feature
) - Create new Pull Request