Created
March 29, 2012 07:23
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def emit(tag, es, chain) | |
t = if @sample_unit == :all | |
'all' | |
else | |
tag | |
end | |
# Access to @counts SHOULD be protected by mutex, with a heavy penalty. | |
# Code below is not thread safe, but @counts (counter for sampling rate) is not | |
# so serious value (and probably will not be broke...), | |
# then i let here as it is now. | |
@counts[t] ||= 0 | |
pairs = [] | |
es.each {|time,record| | |
c = (@count[t] += 1) | |
if c % @interval == 0 | |
pairs.push [time, record] | |
@counts[t] = 0 | |
end | |
} | |
emit_sampled(tag, pairs) | |
chain.next | |
end |
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