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# My Custom colorized formatter
class BasicFormatter < SemanticLogger::Formatters::Color
ANSI_REVERSED_WARNING = "\e[0;30;43m".freeze
ANSI_REVERSED_ERROR = "\e[1;30;41m".freeze
ANSI_GRAY = "\e[90m".freeze
# Return the complete log level name in uppercase
def initialize
super(time_format: "%H:%M:%S",
color_map: ColorMap.new(
debug: ANSI_GRAY,
info: SemanticLogger::AnsiColors::GREEN,
warn: SemanticLogger::AnsiColors::YELLOW,
))
@time_format = nil if File.exist?(File.join(Rails.root, "Procfile.dev"))
end
def time
"#{color}#{format_time(log.time)}#{color_map.clear}" if time_format
end
def message
return unless log.message
prefix = "#{color}--#{color_map.clear}"
case log.level
when :info
message = log.message
message = message&.rstrip if log.name == "Rails" && message.starts_with?("Completed")
message = message.split("for")[0] if log.name == "Rails" && message.starts_with?("Started")
if log.name == "Rails" || log.name == "ActionView::Base"
"#{prefix} #{ANSI_GRAY}#{message}#{color_map.clear}"
else
"#{prefix} #{SemanticLogger::AnsiColors::WHITE}#{message}#{color_map.clear}"
end
when :warn
"#{prefix} #{ANSI_REVERSED_WARNING}#{log.message}#{color_map.clear}"
when :error, :fatal
"#{prefix} #{ANSI_REVERSED_ERROR}#{log.message}#{color_map.clear}"
else
"#{prefix} #{color}#{log.message}#{color_map.clear}"
end
end
def tags; end
def process_info
fname = file_name_and_line
"#{color}[#{fname}]#{color_map.clear}" if fname
end
def exception
return unless log.exception
root_path = Rails.root.to_s
backtrace = log.exception.backtrace.select do |line|
line.starts_with?(root_path)
end
if backtrace.count.positive?
"-- #{ANSI_REVERSED_ERROR}#{log.exception.class}#{color_map.clear} #{color}#{log.exception.message}#{color_map.clear}#{SemanticLogger::AnsiColors::WHITE}\n\t#{backtrace.join("\n\t")}#{color_map.clear}\n\n"
else
"-- #{ANSI_REVERSED_ERROR}#{log.exception.class}: #{log.exception.message}#{color_map.clear}\n\n"
end
end
def call(log, logger)
self.color = color_map[log.level]
self.log = log
self.logger = logger
if @time_format
[time, level, process_info, tags, named_tags, duration, name, message, payload, exception].compact.join(" ")
else
[tags, named_tags, duration, name, message, payload, exception].compact.join(" ")
end
end
end