class Franz::Stats
Attributes
stats[R]
Public Class Methods
new(opts={})
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# File lib/franz/stats.rb, line 8 def initialize opts={} @logger = opts[:logger] || Logger.new(STDOUT) @interval = opts[:interval] || 300 @stats = Hash.new @lock = Mutex.new @t = Thread.new do loop do sleep @interval report reset end end end
Public Instance Methods
create(name, default=nil)
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# File lib/franz/stats.rb, line 32 def create name, default=nil with_lock do stats[name] = Hash.new { |h,k| h[k] = default } end end
dec(name, by=1)
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# File lib/franz/stats.rb, line 50 def dec name, by=1 with_lock do stats[name][:val] -= by end end
delete(name)
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# File lib/franz/stats.rb, line 38 def delete name with_lock do stats.delete name end end
get(name)
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# File lib/franz/stats.rb, line 62 def get name with_lock do stats[name][:val] end end
inc(name, by=1)
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# File lib/franz/stats.rb, line 44 def inc name, by=1 with_lock do stats[name][:val] += by end end
set(name, to)
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# File lib/franz/stats.rb, line 56 def set name, to with_lock do stats[name][:val] = to end end
stop()
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# File lib/franz/stats.rb, line 23 def stop return state if @stop @stop = true @t.stop log.info event: 'stats stopped' return nil end
Private Instance Methods
log()
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# File lib/franz/stats.rb, line 71 def log ; @logger end
report()
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# File lib/franz/stats.rb, line 79 def report ready_stats = with_lock do stats.map { |k,vhash| [ k, vhash[:val] ] } end raise 'No stats?!' if ready_stats.size < 2 # HACK! Need a more elegant solution... log.info \ event: 'stats', interval: @interval, stats: Hash[ready_stats] end
reset()
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# File lib/franz/stats.rb, line 92 def reset with_lock do stats.keys.each do |k| stats[k].delete :val end end end
with_lock() { || ... }
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# File lib/franz/stats.rb, line 73 def with_lock &block @lock.synchronize do yield end end