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Contents
module Monkeyshines
module Monitor
#
# Emits a log line but only every +iter_interval+ calls or +time_interval+
# lapse.
#
# Since the contents of the block aren't called until the criteria are met,
# you can put relatively expensive operations in the log without killing
# your iteration time.
#
class PeriodicLogger < PeriodicMonitor
#
# Call with a block that returns a string or array to log.
# If you return
#
# Ex: log if it has been at least 5 minutes since last announcement:
#
# periodic_logger = Monkeyshines::Monitor::PeriodicLogger.new(:time => 300)
# loop do
# # ... stuff ...
# periodic_logger.periodically{ [morbenfactor, crunkosity, exuberance] }
# end
#
def periodically &block
super do
now = Time.now.utc.to_f
result = [ "%10d"%iter, "%7.1f"%since, "%7.1f"%inst_rate(now), (block ? block.call : nil) ].flatten.compact
Log.info result.join("\t")
end
end
end
end
end
Version data entries
9 entries across 9 versions & 2 rubygems