class Failbot::Rescuer
Rack middleware that rescues exceptions raised from the downstream app and reports to failbot. The exception is reraised after being sent to haystack so upstream middleware can still display an error page or whathaveyou.
Public Class Methods
context(env)
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# File lib/failbot/middleware.rb, line 26 def self.context(env) request = Rack::Request.new(env.dup) params = {} begin params = request.params rescue env["rack.input"].rewind end { :method => request.request_method, :user_agent => env['HTTP_USER_AGENT'], :params => filtered_parameters(env, params), :session => filtered_parameters(env, (request.session.to_hash rescue {})), :referrer => request.referrer, :remote_ip => request.ip, :url => request.url } end
filter_parameters(filter_words, unfiltered_parameters) { |key, value| ... }
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Borrowed from Rails.
# File lib/failbot/middleware.rb, line 59 def self.filter_parameters(filter_words, unfiltered_parameters) parameter_filter = Regexp.new(filter_words.collect{ |s| s.to_s }.join('|'), true) if filter_words.length > 0 filtered_parameters = {} unfiltered_parameters.each do |key, value| if key =~ parameter_filter filtered_parameters[key] = '[FILTERED]' elsif value.is_a?(Hash) filtered_parameters[key] = filter_parameters(filter_words, value) elsif value.is_a?(Array) filtered_parameters[key] = value.collect do |item| case item when Hash, Array filter_parameters(filter_words, item) else item end end elsif block_given? key = key.dup value = value.dup if value.duplicable? yield key, value filtered_parameters[key] = value else filtered_parameters[key] = value end end filtered_parameters end
filtered_parameters(env, params)
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# File lib/failbot/middleware.rb, line 50 def self.filtered_parameters(env, params) if env['filter_words'] filter_parameters(env['filter_words'], params) else params end end
new(app, other)
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# File lib/failbot/middleware.rb, line 6 def initialize(app, other) @app = app @other = other end
report(exception, env, other = {})
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# File lib/failbot/middleware.rb, line 46 def self.report(exception, env, other = {}) Failbot.report(exception, other.merge(context(env))) end
Public Instance Methods
call(env)
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# File lib/failbot/middleware.rb, line 11 def call(env) Failbot.reset! Failbot.push @other.merge(self.class.context(env)) begin start = Time.now @app.call(env) rescue Object => boom elapsed = Time.now - start Failbot.report(boom, {:time => elapsed.to_s}) raise end ensure Failbot.reset! end