FaradayMiddleware::Request::Retry

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Faraday middleware to manage request retries.

Description

This gem is Faraday middleware that adds retry handling for 429 and 503 errors.

Installation

Add this line to your application's Gemfile:

gem 'faraday_middleware-request-retry'

And then execute:

$ bundle

Or install it yourself as:

$ gem install faraday_middleware-request-retry

Usage

require 'faraday'
require 'faraday_middleware-request-retry'
require 'logger'

conn = Faraday.new(url: "http://example.com") do |builder|
  builder.use FaradayMiddleware::Refresh::Retry, logger: Logger.new(STDOUT), retry_after: 15
  builder.adapter Faraday.default_adapter
end

conn.get "/foo" # sends token

Options include:

Option Values Optional Default
:logger Logger object optional
:retry_after Default retry seconds optional 10 seconds
:error_codes Array of error codes, e.g. [429, 503, 504] optional [429, 503]

External Use

The core retry functionality can be used separately from Faraday when necessary. For example, when requests cannot be replayed, e.g. when Faraday::UploadIO is used.

res = faraday_client.get '/my_url'

retry_util = FaradayMiddleware::Request::RetryUtil.new

# The following will return `true` for retry, `false` for don't,
# while sleeping when necessary
want_retry = retry_util.retry_status res.status, res.headers['Retry-After']

Change Log

See CHANGELOG.md

Project Repo

Problems, Comments, Suggestions, Contributions?

Any reports of problems, comments or suggestions are most welcome.

Please report these on Github

Credits

This library is originally based on code extracted from the Zendesk Ruby SDK's ZendeskAPI::Middleware::Request::Retry class, in v1.14.0 (commit 2c2b52e) available under the Apache 2.0 license.

Copyright © 2015 Zendesk, 2016 John Wang

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.

You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.