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WIP - implement lazy tags #365

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4 changes: 4 additions & 0 deletions lib/statsd/instrument/datagram_builder.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -79,6 +79,10 @@ def generate_generic_datagram(name, value, type, sample_rate, tags)
datagram << @default_tags
end

if tags.respond_to?(:call)
tags = tags.call
end

unless tags.nil? || tags.empty?
datagram << (@default_tags.nil? ? "|#" : ",")
compile_tags(tags, datagram)
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11 changes: 11 additions & 0 deletions test/datagram_builder_test.rb
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Expand Up @@ -92,6 +92,17 @@ def test_tags
assert_equal("foo:10|d|#foo:bar,baz:quc", datagram)
end

def test_lazy_tags
datagram = @datagram_builder.d("foo", 10, nil, -> { { foo: "bar" } })
assert_equal("foo:10|d|#foo:bar", datagram)

datagram = @datagram_builder.d("foo", 10, nil, -> { ["foo", "bar"] })
assert_equal("foo:10|d|#foo,bar", datagram)

datagram = @datagram_builder.d("foo", 10, nil, -> { ["foo:bar"] })
assert_equal("foo:10|d|#foo:bar", datagram)
end

def test_prefix
datagram_builder = StatsD::Instrument::DatagramBuilder.new(prefix: "foo")
datagram = datagram_builder.c("bar", 1, nil, nil)
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