Created
February 16, 2015 23:35
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# in test.rb | |
require Rails.root.join('config/initializers/diagnostic') | |
config.middleware.use(MyApp::DiagnosticMiddleware) | |
# config/initializers/diagnostic.rb | |
module MyApp | |
class DiagnosticMiddleware | |
FILENAME = 'log/diagnostic.log' unless defined? FILENAME | |
def initialize(app) | |
@app = app | |
end | |
def call(env) | |
return @app.call(env) | |
rescue StandardError => e | |
trace = e.backtrace.select{ |l|l.start_with?(Rails.root.to_s) }.join("\n ") | |
msg = "#{e.class}\n#{e.message}\n#{trace}\n" | |
File.open(FILENAME, 'a') { |f| f.write msg } | |
raise e | |
end | |
end | |
end |
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