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require_relative 'wrapper'
require_relative 'base'
require 'io/console'
require 'amazing_print'
# Opinioned Rails custom formatter
class BasicFormatter < SemanticLogger::Formatters::Color
NAME_MAX_SIZE = 25
TERMINAL_PREFIX = ENV['TERMINAL_PREFIX'].to_i || 0
CONTENT_PREFIX = ' '.freeze
ANSI_DEBUG = "\e[90m".freeze
ANSI_INFO = SemanticLogger::AnsiColors::GREEN
ANSI_WARN = SemanticLogger::AnsiColors::YELLOW
ANSI_ERROR = "\e[91m".freeze
ANSI_NEUTRAL_INFO = SemanticLogger::AnsiColors::WHITE
ANSI_REVERSED_WARNING = "\e[0;30;43m".freeze
ANSI_REVERSED_ERROR = "\e[1;30;41m".freeze
ANSI_REVERSED_FATAL = "\e[1;30;41m".freeze
CONTENT_COLOR_MAP = ColorMap.new(
debug: ANSI_DEBUG,
info: ANSI_NEUTRAL_INFO,
warn: ANSI_REVERSED_WARNING,
error: ANSI_REVERSED_ERROR,
fatal: ANSI_REVERSED_FATAL
)
EXCLUDE_LAMBDA = lambda { |log|
if log.name == 'ActionView::Base'
!log.message.starts_with?(' Rendering')
elsif log.name == 'Rails' && !log.message.nil?
log.message.exclude?('Started GET "/rails/live/reload')
elsif log.name == 'ActiveRecord::Base'
log.message.exclude?('↳ lib/formatters/basic_formatter.rb')
else
true
end
}
def initialize
super(color_map: ColorMap.new(
debug: ANSI_DEBUG,
info: ANSI_INFO,
warn: ANSI_WARN,
error: ANSI_ERROR,
fatal: ANSI_ERROR
))
end
def message
return unless log.message
message = log.message
if log.name == 'Rails' && message.starts_with?('Completed')
message.rstrip!
message += "\n" unless message.starts_with?('Completed 5')
end
wrap_length = compute_useful_length
md = message.match(/^\s*/)
space_prefix = md.match(0)
message = md.post_match
message = Wrapper.wrap("#{CONTENT_COLOR_MAP[log.level]}#{message}", before_message(true) + space_prefix.to_s,
wrap_length - md.end(0))
"#{CONTENT_COLOR_MAP[log.level]}#{space_prefix}#{message}#{color_map.clear}"
end
def payload
return unless log.payload
lines = log.payload.ai(ruby19_syntax: true, indent: 2).split("\n")
first_line = lines.shift
space_prefix = first_line.match(/^\s*/)
lines = lines.map do |l|
"#{before_message(true)}#{space_prefix}#{l}"
end
result = lines.unshift(first_line).join("\n")
result.sub!(/\s*/) { |m| '-' * m.length }
result
end
def level
case log.level
when :info, :debug then draw_rails ' '
else draw_rails(log.level.to_s.chr.upcase)
end
end
def draw_rails(char)
"#{color}#{char}#{color_map.clear}"
end
def continuation
draw_rails('┆')
end
def name
"#{ANSI_DEBUG}#{log.name.truncate(NAME_MAX_SIZE).center(NAME_MAX_SIZE)}#{color_map.clear}"
end
def exception # rubocop:disable Metrics/AbcSize
return unless log.exception
root_path = Rails.root.to_s
stack = log.exception.backtrace.select { |line| line.starts_with?(root_path) }
stack = stack.map { |line| line.delete_prefix("#{root_path}/") }
"#{ANSI_REVERSED_WARNING}#{log.exception.class}#{color_map.clear} #{ANSI_REVERSED_ERROR}#{log.exception.message}#{color_map.clear}#{backtrace(stack)}" # rubocop:disable Layout/LineLength
end
def call(log, logger)
unless log.message.is_a?(String)
log.payload = log.message
log.message = nil
end
self.color = color_map[log.level]
self.log = log
self.logger = logger
before_message + [message, payload, exception].compact.join(' ')
end
private
def compute_useful_length
wrap_length = IO.console.winsize[1] - TERMINAL_PREFIX - before_message.length + CONTENT_PREFIX.length + 12
rescue StandardError
wrap_length = 100 # FIXME: CONSTANTIZE, only useful in DEBUGGER, no IO.console detected!
end
def before_message(wrapped = false)
[name, wrapped ? continuation : level, tags, named_tags, duration].compact.join(' ') + CONTENT_PREFIX
end
def backtrace(stack)
nil unless stack.count.positive?
"\n#{before_message} #{ANSI_ERROR}#{stack.join("\n#{before_message} #{ANSI_ERROR}")}#{color_map.clear}"
end
def color_content
color
end
end