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# frozen_string_literal: true
module Gitlab
module GrapeLogging
module Loggers
class ExceptionLogger < ::GrapeLogging::Loggers::Base
def parameters(request, response_body)
data = {}
data[:api_error] = format_body(response_body) if bad_request?(request)
# grape-logging attempts to pass the logger the exception
# (https://github.com/aserafin/grape_logging/blob/v1.7.0/lib/grape_logging/middleware/request_logger.rb#L63),
# but it appears that the rescue_all in api.rb takes
# precedence so the logger never sees it. We need to
# store and retrieve the exception from the environment.
exception = request.env[::API::Helpers::API_EXCEPTION_ENV]
return data unless exception.is_a?(Exception)
Gitlab::ExceptionLogFormatter.format!(exception, data)
data
end
private
def format_body(response_body)
# https://github.com/rack/rack/blob/master/SPEC.rdoc#label-The+Body:
# The response_body must respond to each, but just in case we
# guard against errors here.
response_body = Array(response_body) unless response_body.respond_to?(:each)
# To avoid conflicting types in Elasticsearch, convert every
# element into an Array of strings. A response body is usually
# an array of Strings so that the response can be sent in
# chunks.
body = []
# each_with_object doesn't work with Rack::BodyProxy
response_body.each { |chunk| body << chunk.to_s }
body
end
def bad_request?(request)
request.env[::API::Helpers::API_RESPONSE_STATUS_CODE] == 400
end
end
end
end
end
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