/
processor_metrics.go
122 lines (110 loc) · 3.59 KB
/
processor_metrics.go
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// Copyright observIQ, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package resourceattributetransposerprocessor
import (
"context"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/consumer"
"go.opentelemetry.io/collector/pdata/pcommon"
"go.opentelemetry.io/collector/pdata/pmetric"
"go.uber.org/zap"
)
type metricsProcessor struct {
consumer consumer.Metrics
logger *zap.Logger
config *Config
}
// newMetricsProcessor returns a new resourceToMetricsAttributesProcessor
func newMetricsProcessor(logger *zap.Logger, consumer consumer.Metrics, config *Config) *metricsProcessor {
return &metricsProcessor{
consumer: consumer,
logger: logger,
config: config,
}
}
// Start starts the processor. It's a noop.
func (metricsProcessor) Start(_ context.Context, _ component.Host) error {
return nil
}
// Capabilities returns the consumer's capabilities. Indicates that this processor mutates the incoming metrics.
func (metricsProcessor) Capabilities() consumer.Capabilities {
return consumer.Capabilities{MutatesData: true}
}
// ConsumeMetrics processes the incoming pdata.Metrics.
func (p metricsProcessor) ConsumeMetrics(ctx context.Context, md pmetric.Metrics) error {
resMetrics := md.ResourceMetrics()
for i := 0; i < resMetrics.Len(); i++ {
resMetric := resMetrics.At(i)
resourceAttrs := resMetric.Resource().Attributes()
for _, op := range p.config.Operations {
resourceValue, ok := resourceAttrs.Get(op.From)
if !ok {
continue
}
ilms := resMetric.ScopeMetrics()
for j := 0; j < ilms.Len(); j++ {
ilm := ilms.At(j)
metrics := ilm.Metrics()
for k := 0; k < metrics.Len(); k++ {
metric := metrics.At(k)
setMetricAttr(metric, op.To, resourceValue)
}
}
}
}
return p.consumer.ConsumeMetrics(ctx, md)
}
// Shutdown stops the processor. It's a noop.
func (metricsProcessor) Shutdown(_ context.Context) error {
return nil
}
// setMetricAttr sets the attribute (attrName) to the given value for every datapoint in the metric
func setMetricAttr(metric pmetric.Metric, attrName string, value pcommon.Value) {
switch metric.Type() {
case pmetric.MetricTypeGauge:
dps := metric.Gauge().DataPoints()
for i := 0; i < dps.Len(); i++ {
dp := dps.At(i)
if _, ok := dp.Attributes().Get(attrName); !ok {
value.CopyTo(dp.Attributes().PutEmpty(attrName))
}
}
case pmetric.MetricTypeHistogram:
dps := metric.Histogram().DataPoints()
for i := 0; i < dps.Len(); i++ {
dp := dps.At(i)
if _, ok := dp.Attributes().Get(attrName); !ok {
value.CopyTo(dp.Attributes().PutEmpty(attrName))
}
}
case pmetric.MetricTypeSum:
dps := metric.Sum().DataPoints()
for i := 0; i < dps.Len(); i++ {
dp := dps.At(i)
if _, ok := dp.Attributes().Get(attrName); !ok {
value.CopyTo(dp.Attributes().PutEmpty(attrName))
}
}
case pmetric.MetricTypeSummary:
dps := metric.Summary().DataPoints()
for i := 0; i < dps.Len(); i++ {
dp := dps.At(i)
if _, ok := dp.Attributes().Get(attrName); !ok {
value.CopyTo(dp.Attributes().PutEmpty(attrName))
}
}
default:
// skip metric if None or unknown type
}
}