/
numeric_tag_filter.go
52 lines (43 loc) · 1.56 KB
/
numeric_tag_filter.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package sampling // import "github.com/open-telemetry/opentelemetry-collector-contrib/processor/tailsamplingprocessor/internal/sampling"
import (
"context"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/pdata/pcommon"
"go.opentelemetry.io/collector/pdata/ptrace"
"go.uber.org/zap"
)
type numericAttributeFilter struct {
key string
minValue, maxValue int64
logger *zap.Logger
invertMatch bool
}
var _ PolicyEvaluator = (*numericAttributeFilter)(nil)
// NewNumericAttributeFilter creates a policy evaluator that samples all traces with
// the given attribute in the given numeric range.
func NewNumericAttributeFilter(settings component.TelemetrySettings, key string, minValue, maxValue int64, invertMatch bool) PolicyEvaluator {
return &numericAttributeFilter{
key: key,
minValue: minValue,
maxValue: maxValue,
logger: settings.Logger,
invertMatch: invertMatch,
}
}
// Evaluate looks at the trace data and returns a corresponding SamplingDecision.
func (naf *numericAttributeFilter) Evaluate(_ context.Context, _ pcommon.TraceID, trace *TraceData) (Decision, error) {
trace.Lock()
defer trace.Unlock()
batches := trace.ReceivedBatches
return hasSpanWithCondition(batches, func(span ptrace.Span) bool {
if v, ok := span.Attributes().Get(naf.key); ok {
value := v.Int()
if value >= naf.minValue && value <= naf.maxValue {
return !(naf.invertMatch)
}
}
return naf.invertMatch
}), nil
}