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Merge pull request #13449 from fatsheep9146/native-histogram-support-exemplar

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scrape: Prometheus server support exemplar in native histogram
This commit is contained in:
Björn Rabenstein 2024-01-25 21:34:17 +01:00 committed by GitHub
commit 0fe34f8f8d
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GPG Key ID: B5690EEEBB952194
2 changed files with 136 additions and 67 deletions
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prompb/io/prometheus/client/metrics.pb.go
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@ -438,11 +438,13 @@ type Histogram struct {
// Use either "positive_delta" or "positive_count", the former for
// regular histograms with integer counts, the latter for float
// histograms.
PositiveDelta []int64 `protobuf:"zigzag64,13,rep,packed,name=positive_delta,json=positiveDelta,proto3" json:"positive_delta,omitempty"`
PositiveCount []float64 `protobuf:"fixed64,14,rep,packed,name=positive_count,json=positiveCount,proto3" json:"positive_count,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
PositiveDelta []int64 `protobuf:"zigzag64,13,rep,packed,name=positive_delta,json=positiveDelta,proto3" json:"positive_delta,omitempty"`
PositiveCount []float64 `protobuf:"fixed64,14,rep,packed,name=positive_count,json=positiveCount,proto3" json:"positive_count,omitempty"`
// Only used for native histograms. These exemplars MUST have a timestamp.
Exemplars []*Exemplar `protobuf:"bytes,16,rep,name=exemplars,proto3" json:"exemplars,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *Histogram) Reset() { *m = Histogram{} }
@ -583,6 +585,13 @@ func (m *Histogram) GetPositiveCount() []float64 {
return nil
}
func (m *Histogram) GetExemplars() []*Exemplar {
if m != nil {
return m.Exemplars
}
return nil
}
type Bucket struct {
CumulativeCount uint64 `protobuf:"varint,1,opt,name=cumulative_count,json=cumulativeCount,proto3" json:"cumulative_count,omitempty"`
CumulativeCountFloat float64 `protobuf:"fixed64,4,opt,name=cumulative_count_float,json=cumulativeCountFloat,proto3" json:"cumulative_count_float,omitempty"`
@ -973,68 +982,69 @@ func init() {
}
var fileDescriptor_d1e5ddb18987a258 = []byte{
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}
func (m *LabelPair) Marshal() (dAtA []byte, err error) {
@ -1328,6 +1338,22 @@ func (m *Histogram) MarshalToSizedBuffer(dAtA []byte) (int, error) {
i -= len(m.XXX_unrecognized)
copy(dAtA[i:], m.XXX_unrecognized)
}
if len(m.Exemplars) > 0 {
for iNdEx := len(m.Exemplars) - 1; iNdEx >= 0; iNdEx-- {
{
size, err := m.Exemplars[iNdEx].MarshalToSizedBuffer(dAtA[:i])
if err != nil {
return 0, err
}
i -= size
i = encodeVarintMetrics(dAtA, i, uint64(size))
}
i--
dAtA[i] = 0x1
i--
dAtA[i] = 0x82
}
}
if m.CreatedTimestamp != nil {
{
size, err := m.CreatedTimestamp.MarshalToSizedBuffer(dAtA[:i])
@ -2006,6 +2032,12 @@ func (m *Histogram) Size() (n int) {
l = m.CreatedTimestamp.Size()
n += 1 + l + sovMetrics(uint64(l))
}
if len(m.Exemplars) > 0 {
for _, e := range m.Exemplars {
l = e.Size()
n += 2 + l + sovMetrics(uint64(l))
}
}
if m.XXX_unrecognized != nil {
n += len(m.XXX_unrecognized)
}
@ -3291,6 +3323,40 @@ func (m *Histogram) Unmarshal(dAtA []byte) error {
return err
}
iNdEx = postIndex
case 16:
if wireType != 2 {
return fmt.Errorf("proto: wrong wireType = %d for field Exemplars", wireType)
}
var msglen int
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
return ErrIntOverflowMetrics
}
if iNdEx >= l {
return io.ErrUnexpectedEOF
}
b := dAtA[iNdEx]
iNdEx++
msglen |= int(b&0x7F) << shift
if b < 0x80 {
break
}
}
if msglen < 0 {
return ErrInvalidLengthMetrics
}
postIndex := iNdEx + msglen
if postIndex < 0 {
return ErrInvalidLengthMetrics
}
if postIndex > l {
return io.ErrUnexpectedEOF
}
m.Exemplars = append(m.Exemplars, &Exemplar{})
if err := m.Exemplars[len(m.Exemplars)-1].Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
return err
}
iNdEx = postIndex
default:
iNdEx = preIndex
skippy, err := skipMetrics(dAtA[iNdEx:])

3
prompb/io/prometheus/client/metrics.proto
View File

@ -112,6 +112,9 @@ message Histogram {
// histograms.
repeated sint64 positive_delta = 13; // Count delta of each bucket compared to previous one (or to zero for 1st bucket).
repeated double positive_count = 14; // Absolute count of each bucket.
// Only used for native histograms. These exemplars MUST have a timestamp.
repeated Exemplar exemplars = 16;
}
message Bucket {