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writev2: Add support for nhcb.

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Signed-off-by: bwplotka <bwplotka@gmail.com>
This commit is contained in:
bwplotka 2024-07-02 12:14:49 +01:00
parent 55b943f137
commit 49ab10906d
2 changed files with 29 additions and 14 deletions
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7
prompb/io/prometheus/write/v2/codec.go
View file

@ -61,7 +61,6 @@ func (h Histogram) IsFloatHistogram() bool {
// ToIntHistogram returns integer Prometheus histogram from the remote implementation
// of integer histogram. If it's a float histogram, the method returns nil.
// TODO(bwplotka): Add support for incoming NHCB.
func (h Histogram) ToIntHistogram() *histogram.Histogram {
if h.IsFloatHistogram() {
return nil
@ -77,13 +76,13 @@ func (h Histogram) ToIntHistogram() *histogram.Histogram {
PositiveBuckets: h.GetPositiveDeltas(),
NegativeSpans: spansProtoToSpans(h.GetNegativeSpans()),
NegativeBuckets: h.GetNegativeDeltas(),
CustomValues: h.GetCustomValues(),
}
}
// ToFloatHistogram returns float Prometheus histogram from the remote implementation
// of float histogram. If the underlying implementation is an integer histogram, a
// conversion is performed.
// TODO(bwplotka): Add support for incoming NHCB.
func (h Histogram) ToFloatHistogram() *histogram.FloatHistogram {
if h.IsFloatHistogram() {
return &histogram.FloatHistogram{
@ -97,6 +96,7 @@ func (h Histogram) ToFloatHistogram() *histogram.FloatHistogram {
PositiveBuckets: h.GetPositiveCounts(),
NegativeSpans: spansProtoToSpans(h.GetNegativeSpans()),
NegativeBuckets: h.GetNegativeCounts(),
CustomValues: h.GetCustomValues(),
}
}
// Conversion from integer histogram.
@ -111,6 +111,7 @@ func (h Histogram) ToFloatHistogram() *histogram.FloatHistogram {
PositiveBuckets: deltasToCounts(h.GetPositiveDeltas()),
NegativeSpans: spansProtoToSpans(h.GetNegativeSpans()),
NegativeBuckets: deltasToCounts(h.GetNegativeDeltas()),
CustomValues: h.GetCustomValues(),
}
}
@ -146,6 +147,7 @@ func FromIntHistogram(timestamp int64, h *histogram.Histogram) Histogram {
PositiveSpans: spansToSpansProto(h.PositiveSpans),
PositiveDeltas: h.PositiveBuckets,
ResetHint: Histogram_ResetHint(h.CounterResetHint),
CustomValues: h.CustomValues,
Timestamp: timestamp,
}
}
@ -163,6 +165,7 @@ func FromFloatHistogram(timestamp int64, fh *histogram.FloatHistogram) Histogram
PositiveSpans: spansToSpansProto(fh.PositiveSpans),
PositiveCounts: fh.PositiveBuckets,
ResetHint: Histogram_ResetHint(fh.CounterResetHint),
CustomValues: fh.CustomValues,
Timestamp: timestamp,
}
}

36
prompb/rwcommon/codec_test.go
View file

@ -113,6 +113,7 @@ func testIntHistogram() histogram.Histogram {
{Offset: 0, Length: 1},
},
NegativeBuckets: []int64{1, 2, -2, 1, -1, 0},
CustomValues: []float64{21421, 523}, // Technically not valid nhcb, but we test if fields would be copied.
}
}
@ -135,22 +136,29 @@ func testFloatHistogram() histogram.FloatHistogram {
{Offset: 0, Length: 1},
},
NegativeBuckets: []float64{1, 3, 1, 2, 1, 1},
CustomValues: []float64{21421, 523}, // Technically not valid nhcb, but we test if fields would be copied over and back.
}
}
func TestFromIntToFloatOrIntHistogram(t *testing.T) {
testIntHist := testIntHistogram()
testFloatHist := testFloatHistogram()
t.Run("v1", func(t *testing.T) {
h := prompb.FromIntHistogram(123, testIntHist.Copy())
// v1 does not support nhcb.
testIntHistWithoutNHCB := testIntHistogram()
testIntHistWithoutNHCB.CustomValues = nil
testFloatHistWithoutNHCB := testFloatHistogram()
testFloatHistWithoutNHCB.CustomValues = nil
h := prompb.FromIntHistogram(123, &testIntHistWithoutNHCB)
require.False(t, h.IsFloatHistogram())
require.Equal(t, int64(123), h.Timestamp)
require.Equal(t, testIntHist, *h.ToIntHistogram())
require.Equal(t, testFloatHist, *h.ToFloatHistogram())
require.Equal(t, testIntHistWithoutNHCB, *h.ToIntHistogram())
require.Equal(t, testFloatHistWithoutNHCB, *h.ToFloatHistogram())
})
t.Run("v2", func(t *testing.T) {
h := writev2.FromIntHistogram(123, testIntHist.Copy())
testIntHist := testIntHistogram()
testFloatHist := testFloatHistogram()
h := writev2.FromIntHistogram(123, &testIntHist)
require.False(t, h.IsFloatHistogram())
require.Equal(t, int64(123), h.Timestamp)
require.Equal(t, testIntHist, *h.ToIntHistogram())
@ -159,17 +167,21 @@ func TestFromIntToFloatOrIntHistogram(t *testing.T) {
}
func TestFromFloatToFloatHistogram(t *testing.T) {
testFloatHist := testFloatHistogram()
t.Run("v1", func(t *testing.T) {
h := prompb.FromFloatHistogram(123, testFloatHist.Copy())
// v1 does not support nhcb.
testFloatHistWithoutNHCB := testFloatHistogram()
testFloatHistWithoutNHCB.CustomValues = nil
h := prompb.FromFloatHistogram(123, &testFloatHistWithoutNHCB)
require.True(t, h.IsFloatHistogram())
require.Equal(t, int64(123), h.Timestamp)
require.Nil(t, h.ToIntHistogram())
require.Equal(t, testFloatHist, *h.ToFloatHistogram())
require.Equal(t, testFloatHistWithoutNHCB, *h.ToFloatHistogram())
})
t.Run("v2", func(t *testing.T) {
h := writev2.FromFloatHistogram(123, testFloatHist.Copy())
testFloatHist := testFloatHistogram()
h := writev2.FromFloatHistogram(123, &testFloatHist)
require.True(t, h.IsFloatHistogram())
require.Equal(t, int64(123), h.Timestamp)
require.Nil(t, h.ToIntHistogram())