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Contents
module Startback
module Web
#
# This Rack middleware catches all exceptions that are raised by sublayers
# in the Rack chain. It converts them to correct 500 Errors, with a generic
# exception message encoded in json.
#
# This class aims at being used as top level of a Rack chain. It is not
# aimed at being subclassed.
#
# Fatal error cached are also sent as a `fatal` messange, on the error
# handler provided on Context#error_handler.fatal, if any.
#
# Examples:
#
# Rack::Builder.new do
# use Startback::Web::CatchAll
# end
#
class CatchAll < Rack::Robustness
include Errors
include Support::Robustness
FATAL_ERROR = {
code: "Startback::Errors::InternalServerError",
description: "An error occured, sorry"
}.to_json
self.catch_all
self.on(Exception)
self.status 500
self.content_type 'application/json'
self.body FATAL_ERROR
self.ensure(true) do |ex|
context = env[Context::Middleware::RACK_ENV_KEY]
begin
if context && context.respond_to?(:error_handler, true) && context.error_handler
context.error_handler.fatal(ex)
else
log(:fatal, self, "ensure", context, error: ex)
end
rescue => ex2
STDERR.puts(ex2.message)
STDERR.puts(ex2.backtrace[0..10].join("\n"))
raise
end
end
end # class CatchAll
end # class Web
end # module Startback
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60 entries across 60 versions & 3 rubygems