Practical Logs. Vol 2

how I keep improving on logs

Transcript

1. Practical Logs Vol.2
2. Previously…
3. A real app
5. Logentries
6. that is ok but…
7. Difficult to search stuff Search for device=‘Other’
8. Search for device=‘Other’ Difficult to search stuff
9. Other limited capabilities of the tool
11. Not able to cross information - What are the endpoints requested by a particular user? - which are the requests made by the iPhone client in a particular vesion? - Do you even use http caching bro? - Who are the most active users? Which status codes do they get back? - For a given request how many unique users have done this requests?
13. Before
14. After
15. - What are the endpoints requested by a particular user? - which are the requests made by the iPhone client in a particular vesion? - Do you even use http caching bro? - Who are the most active users? Which status codes do they get back? - For a given request how many unique users have done this requests? ✅ ✅ ✅ ✅ ✅
16. Demo
18. What about YOUR project™
20. gem 'useful_logs', github: 'hyperoslo/useful_logs' gem 'lograge'
21. class MyRequestInfo < UsefulLogs::RequestInfo def self.field_ids super.concat(%I(app_install_id)) end def app_install_id headers['HTTP_X_APP_INSTALL_IDENTIFIER'] end end
22. module MyApp class Application < Rails::Application config.log_level = ENV.fetch('RAILS_LOG_LEVEL', :debug).to_sym config.log_tags = [:uuid] end end # config/application.rb
23. # config/initializer/useful_logs.rb UsefulLogs.configure do |config| config.request_info_class_name = 'MyRequestInfo' end MyApp::Application.configure do config.lograge.enabled = true config.lograge.custom_options = lambda do |event| options = { mark: 'request' } MyRequestInfo.field_ids.each_with_object(options) do |field, data| data[field] = event.payload[field] end end config.lograge.formatter = lambda do |data| UsefulLogs::LogFormatter.key_value_pairs(data) end end
25. module Logging module Token def self.log_token_error(id:, context:, error:, error_response:) token_error = { token_event: 'token_error', token_error: id, context: context, error: error, error_response: error_response } Rails.logger.error Logging.stringify(hash: token_error) end def self.log_token_warning(token_warning:, reason:) token_warning = { token_event: 'token_warning', token_warning: token_warning, reason: reason } Rails.logger.warn Logging.stringify(hash: token_warning) end end end Module/hash approach
 to log other events than requests
27. https://api.logmatic.io/v1/input/ <your_api_key>?webapp=rema-training- prod
28. Thanks! fespinoza fespinozacast