module ExceptionNotifier::ErrorGrouping::ClassMethods
Public Instance Methods
error_count(error_key)
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# File lib/exception_notifier/modules/error_grouping.rb, line 30 def error_count(error_key) count = begin error_grouping_cache.read(error_key) rescue StandardError => e log_cache_error(error_grouping_cache, e, :read) fallback_cache_store.read(error_key) end count&.to_i end
fallback_cache_store()
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Fallback to the memory store while the specified cache store doesn’t work
# File lib/exception_notifier/modules/error_grouping.rb, line 26 def fallback_cache_store @fallback_cache_store ||= ActiveSupport::Cache::MemoryStore.new end
group_error!(exception, options)
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# File lib/exception_notifier/modules/error_grouping.rb, line 49 def group_error!(exception, options) message_based_key = "exception:#{Zlib.crc32("#{exception.class.name}\nmessage:#{exception.message}")}" accumulated_errors_count = 1 if (count = error_count(message_based_key)) accumulated_errors_count = count + 1 save_error_count(message_based_key, accumulated_errors_count) else backtrace_based_key = "exception:#{Zlib.crc32("#{exception.class.name}\npath:#{exception.backtrace.try(:first)}")}" if (count = error_grouping_cache.read(backtrace_based_key)) accumulated_errors_count = count + 1 save_error_count(backtrace_based_key, accumulated_errors_count) else save_error_count(backtrace_based_key, accumulated_errors_count) save_error_count(message_based_key, accumulated_errors_count) end end options[:accumulated_errors_count] = accumulated_errors_count end
save_error_count(error_key, count)
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# File lib/exception_notifier/modules/error_grouping.rb, line 42 def save_error_count(error_key, count) error_grouping_cache.write(error_key, count, expires_in: error_grouping_period) rescue StandardError => e log_cache_error(error_grouping_cache, e, :write) fallback_cache_store.write(error_key, count, expires_in: error_grouping_period) end
send_notification?(exception, count)
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# File lib/exception_notifier/modules/error_grouping.rb, line 72 def send_notification?(exception, count) if notification_trigger.respond_to?(:call) notification_trigger.call(exception, count) else factor = Math.log2(count) factor.to_i == factor end end
Private Instance Methods
log_cache_error(cache, exception, action)
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# File lib/exception_notifier/modules/error_grouping.rb, line 83 def log_cache_error(cache, exception, action) "#{cache.inspect} failed to #{action}, reason: #{exception.message}. Falling back to memory cache store." end