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# frozen_string_literal: true
module Gitlab
module Faraday
# Simple Faraday Middleware that catches any error risen during the request and run the configured callback.
# (https://lostisland.github.io/faraday/middleware/)
#
# By default, a no op callback is setup.
#
# Note that the error is not swallowed: it will be rerisen again. In that regard, this callback acts more
# like an error spy than anything else.
#
# The callback has access to the request `env` and the exception instance. For more details, see
# https://lostisland.github.io/faraday/middleware/custom
#
# Faraday.new do |conn|
# conn.request(
# :error_callback,
# callback: -> (env, exception) { Rails.logger.debug("Error #{exception.class.name} when trying to contact #{env[:url]}" ) }
# )
# conn.adapter(:net_http)
# end
class ErrorCallback < ::Faraday::Middleware
def initialize(app, options = nil)
super(app)
@options = ::Gitlab::Faraday::ErrorCallback::Options.from(options) # rubocop: disable CodeReuse/ActiveRecord
end
def call(env)
@app.call(env)
rescue => e
@options.callback&.call(env, e)
raise
end
class Options < ::Faraday::Options.new(:callback)
def callback
self[:callback]
end
end
end
end
end
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