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/
gauge_modifiers.rb
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/
gauge_modifiers.rb
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module FnordMetric::GaugeModifiers
def incr(gauge_name, value=1)
gauge = fetch_gauge(gauge_name)
assure_two_dimensional!(gauge)
if gauge.unique?
incr_uniq(gauge, value)
elsif gauge.average?
incr_avg(gauge, value)
else
incr_tick(gauge, value)
end
end
def incr_tick(gauge, value)
if gauge.progressive?
@redis.incrby(gauge.key(:head), value).callback do |head|
@redis.hsetnx(gauge.key, gauge.tick_at(time), head).callback do |_new|
@redis.hincrby(gauge.key, gauge.tick_at(time), value) unless _new
end
end
else
@redis.hsetnx(gauge.key, gauge.tick_at(time), 0).callback do
@redis.hincrby(gauge.key, gauge.tick_at(time), value)
end
end
end
def incr_uniq(gauge, value, field_name=nil)
return false if session_key.blank?
@redis.sadd(gauge.tick_key(time, :sessions), session_key).callback do |_new|
@redis.expire(gauge.tick_key(time, :sessions), gauge.tick)
if (_new == 1) || (_new == true) #redis vs. em-redis
@redis.incr(gauge.tick_key(time, :"sessions-count")).callback do |sc|
field_name ? incr_field_by(gauge, field_name, value) : incr_tick(gauge, value)
end
end
end
end
def incr_avg(gauge, value)
@redis.incr(gauge.tick_key(time, :"value-count")).callback do
incr_tick(gauge, value)
end
end
def incr_field(gauge_name, field_name, value=1)
gauge = fetch_gauge(gauge_name)
assure_three_dimensional!(gauge)
if gauge.unique?
incr_uniq(gauge, value, field_name)
else
incr_field_by(gauge, field_name, value)
end
end
def incr_field_by(gauge, field_name, value)
@redis.zincrby(gauge.tick_key(time), value, field_name).callback do
@redis.incrby(gauge.tick_key(time, :count), 1)
end
end
def set_value(gauge_name, value)
gauge = fetch_gauge(gauge_name)
assure_two_dimensional!(gauge)
@redis.hset(gauge.key, gauge.tick_at(time), value)
end
def set_field(gauge_name, field_name, value)
gauge = fetch_gauge(gauge_name)
assure_three_dimensional!(gauge)
@redis.zadd(gauge.tick_key(time), value, field_name)
end
end