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# frozen_string_literal: true
class Logger
# Default formatter for log messages.
class Formatter
Format = "%.1s, [%s #%d] %5s -- %s: %s\n"
DatetimeFormat = "%Y-%m-%dT%H:%M:%S.%6N"
attr_accessor :datetime_format
def initialize
@datetime_format = nil
end
def call(severity, time, progname, msg)
sprintf(Format, severity, format_datetime(time), Process.pid, severity, progname, msg2str(msg))
end
private
def format_datetime(time)
time.strftime(@datetime_format || DatetimeFormat)
end
def msg2str(msg)
case msg
when ::String
msg
when ::Exception
"#{ msg.message } (#{ msg.class })\n#{ msg.backtrace.join("\n") if msg.backtrace }"
else
msg.inspect
end
end
end
end
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