/
boolean_tag_filter.go
55 lines (47 loc) · 1.52 KB
/
boolean_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 booleanAttributeFilter struct {
key string
value bool
logger *zap.Logger
}
var _ PolicyEvaluator = (*booleanAttributeFilter)(nil)
// NewBooleanAttributeFilter creates a policy evaluator that samples all traces with
// the given attribute that match the supplied boolean value.
func NewBooleanAttributeFilter(settings component.TelemetrySettings, key string, value bool) PolicyEvaluator {
return &booleanAttributeFilter{
key: key,
value: value,
logger: settings.Logger,
}
}
// Evaluate looks at the trace data and returns a corresponding SamplingDecision.
func (baf *booleanAttributeFilter) Evaluate(_ context.Context, _ pcommon.TraceID, trace *TraceData) (Decision, error) {
trace.Lock()
batches := trace.ReceivedBatches
trace.Unlock()
return hasResourceOrSpanWithCondition(
batches,
func(resource pcommon.Resource) bool {
if v, ok := resource.Attributes().Get(baf.key); ok {
value := v.Bool()
return value == baf.value
}
return false
},
func(span ptrace.Span) bool {
if v, ok := span.Attributes().Get(baf.key); ok {
value := v.Bool()
return value == baf.value
}
return false
}), nil
}