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summary_metrics.go
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/
summary_metrics.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package internal // import "github.com/open-telemetry/opentelemetry-collector-contrib/exporter/clickhouseexporter/internal"
import (
"context"
"database/sql"
"fmt"
"strings"
"time"
"go.opentelemetry.io/collector/pdata/pcommon"
"go.opentelemetry.io/collector/pdata/pmetric"
"go.uber.org/zap"
)
const (
// language=ClickHouse SQL
createSummaryTableSQL = `
CREATE TABLE IF NOT EXISTS %s_summary (
ResourceAttributes Map(LowCardinality(String), String) CODEC(ZSTD(1)),
ResourceSchemaUrl String CODEC(ZSTD(1)),
ScopeName String CODEC(ZSTD(1)),
ScopeVersion String CODEC(ZSTD(1)),
ScopeAttributes Map(LowCardinality(String), String) CODEC(ZSTD(1)),
ScopeDroppedAttrCount UInt32 CODEC(ZSTD(1)),
ScopeSchemaUrl String CODEC(ZSTD(1)),
MetricName String CODEC(ZSTD(1)),
MetricDescription String CODEC(ZSTD(1)),
MetricUnit String CODEC(ZSTD(1)),
Attributes Map(LowCardinality(String), String) CODEC(ZSTD(1)),
StartTimeUnix DateTime64(9) CODEC(Delta, ZSTD(1)),
TimeUnix DateTime64(9) CODEC(Delta, ZSTD(1)),
Count UInt64 CODEC(Delta, ZSTD(1)),
Sum Float64 CODEC(ZSTD(1)),
ValueAtQuantiles Nested(
Quantile Float64,
Value Float64
) CODEC(ZSTD(1)),
Flags UInt32 CODEC(ZSTD(1)),
INDEX idx_res_attr_key mapKeys(ResourceAttributes) TYPE bloom_filter(0.01) GRANULARITY 1,
INDEX idx_res_attr_value mapValues(ResourceAttributes) TYPE bloom_filter(0.01) GRANULARITY 1,
INDEX idx_scope_attr_key mapKeys(ScopeAttributes) TYPE bloom_filter(0.01) GRANULARITY 1,
INDEX idx_scope_attr_value mapValues(ScopeAttributes) TYPE bloom_filter(0.01) GRANULARITY 1,
INDEX idx_attr_key mapKeys(Attributes) TYPE bloom_filter(0.01) GRANULARITY 1,
INDEX idx_attr_value mapValues(Attributes) TYPE bloom_filter(0.01) GRANULARITY 1
) ENGINE MergeTree()
%s
PARTITION BY toDate(TimeUnix)
ORDER BY (MetricName, Attributes, toUnixTimestamp64Nano(TimeUnix))
SETTINGS index_granularity=8192, ttl_only_drop_parts = 1;
`
// language=ClickHouse SQL
insertSummaryTableSQL = `INSERT INTO %s_summary (
ResourceAttributes,
ResourceSchemaUrl,
ScopeName,
ScopeVersion,
ScopeAttributes,
ScopeDroppedAttrCount,
ScopeSchemaUrl,
MetricName,
MetricDescription,
MetricUnit,
Attributes,
StartTimeUnix,
TimeUnix,
Count,
Sum,
ValueAtQuantiles.Quantile,
ValueAtQuantiles.Value,
Flags) VALUES `
summaryValueCounts = 18
)
var summaryPlaceholders = newPlaceholder(summaryValueCounts)
type summaryModel struct {
metricName string
metricDescription string
metricUnit string
metadata *MetricsMetaData
summary pmetric.Summary
}
type summaryMetrics struct {
summaryModel []*summaryModel
insertSQL string
count int
}
func (s *summaryMetrics) insert(ctx context.Context, db *sql.DB) error {
if s.count == 0 {
return nil
}
valueArgs := make([]any, s.count*summaryValueCounts)
var b strings.Builder
index := 0
for _, model := range s.summaryModel {
for i := 0; i < model.summary.DataPoints().Len(); i++ {
dp := model.summary.DataPoints().At(i)
b.WriteString(*summaryPlaceholders)
valueArgs[index] = model.metadata.ResAttr
valueArgs[index+1] = model.metadata.ResURL
valueArgs[index+2] = model.metadata.ScopeInstr.Name()
valueArgs[index+3] = model.metadata.ScopeInstr.Version()
valueArgs[index+4] = attributesToMap(model.metadata.ScopeInstr.Attributes())
valueArgs[index+5] = model.metadata.ScopeInstr.DroppedAttributesCount()
valueArgs[index+6] = model.metadata.ScopeURL
valueArgs[index+7] = model.metricName
valueArgs[index+8] = model.metricDescription
valueArgs[index+9] = model.metricUnit
valueArgs[index+10] = attributesToMap(dp.Attributes())
valueArgs[index+11] = dp.StartTimestamp().AsTime().UnixNano()
valueArgs[index+12] = dp.Timestamp().AsTime().UnixNano()
valueArgs[index+13] = dp.Count()
valueArgs[index+14] = dp.Sum()
quantiles, values := convertValueAtQuantile(dp.QuantileValues())
valueArgs[index+15] = quantiles
valueArgs[index+16] = values
valueArgs[index+17] = uint32(dp.Flags())
index += summaryValueCounts
}
}
start := time.Now()
err := doWithTx(ctx, db, func(tx *sql.Tx) error {
_, err := tx.ExecContext(ctx, fmt.Sprintf("%s %s", s.insertSQL, strings.TrimSuffix(b.String(), ",")), valueArgs...)
return err
})
duration := time.Since(start)
if err != nil {
logger.Debug("insert summary metrics fail", zap.Duration("cost", duration))
return fmt.Errorf("insert summary metrics fail:%w", err)
}
// TODO latency metrics
logger.Debug("insert summary metrics", zap.Int("records", s.count),
zap.Duration("cost", duration))
return nil
}
func (s *summaryMetrics) Add(resAttr map[string]string, resURL string, scopeInstr pcommon.InstrumentationScope, scopeURL string, metrics any, name string, description string, unit string) error {
summary, ok := metrics.(pmetric.Summary)
if !ok {
return fmt.Errorf("metrics param is not type of Summary")
}
s.count += summary.DataPoints().Len()
s.summaryModel = append(s.summaryModel, &summaryModel{
metricName: name,
metricDescription: description,
metricUnit: unit,
metadata: &MetricsMetaData{
ResAttr: resAttr,
ResURL: resURL,
ScopeURL: scopeURL,
ScopeInstr: scopeInstr,
},
summary: summary,
})
return nil
}