/
metrics.go
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/
metrics.go
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// Copyright 2019, OpenTelemetry Authors
//
// 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 processor
import (
commonpb "github.com/census-instrumentation/opencensus-proto/gen-go/agent/common/v1"
"go.opencensus.io/stats"
"go.opencensus.io/stats/view"
"go.opencensus.io/tag"
"github.com/open-telemetry/opentelemetry-collector/internal/collector/telemetry"
"github.com/open-telemetry/opentelemetry-collector/obsreport"
)
// Keys and stats for telemetry.
var (
TagSourceFormatKey, _ = tag.NewKey("source_format")
TagServiceNameKey, _ = tag.NewKey("service")
TagProcessorNameKey, _ = tag.NewKey("processor")
StatReceivedSpanCount = stats.Int64(
"spans_received",
"counts the number of spans received",
stats.UnitDimensionless)
StatDroppedSpanCount = stats.Int64(
"spans_dropped",
"counts the number of spans dropped",
stats.UnitDimensionless)
StatBadBatchDroppedSpanCount = stats.Int64(
"bad_batch_spans_dropped",
"counts the number of spans dropped due to being in bad batches",
stats.UnitDimensionless)
StatTraceBatchesDroppedCount = stats.Int64(
"trace_batches_dropped",
"counts the number of trace batches dropped",
stats.UnitDimensionless)
StatDroppedMetricCount = stats.Int64(
"metrics_dropped",
"counts the number of metrics dropped",
stats.UnitDimensionless)
StatMetricBatchesDroppedCount = stats.Int64(
"metric_batches_dropped",
"counts the number of metric batches dropped",
stats.UnitDimensionless)
)
// MetricTagKeys returns the metric tag keys according to the given telemetry level.
func MetricTagKeys(level telemetry.Level) []tag.Key {
var tagKeys []tag.Key
switch level {
case telemetry.Detailed:
tagKeys = append(tagKeys, TagServiceNameKey)
fallthrough
case telemetry.Normal:
tagKeys = append(tagKeys, TagSourceFormatKey)
fallthrough
case telemetry.Basic:
tagKeys = append(tagKeys, TagProcessorNameKey)
default:
return nil
}
return tagKeys
}
// MetricViews return the metrics views according to given telemetry level.
func MetricViews(level telemetry.Level) []*view.View {
tagKeys := MetricTagKeys(level)
if tagKeys == nil {
return nil
}
// There are some metrics enabled, return the views.
receivedBatchesView := &view.View{
Name: "batches_received",
Measure: StatReceivedSpanCount,
Description: "The number of span batches received.",
TagKeys: tagKeys,
Aggregation: view.Count(),
}
droppedBatchesView := &view.View{
Measure: StatTraceBatchesDroppedCount,
Description: "The number of span batches dropped.",
TagKeys: tagKeys,
Aggregation: view.Sum(),
}
droppedBadBatchesView := &view.View{
Name: "bad_batches_dropped",
Measure: StatBadBatchDroppedSpanCount,
Description: "The number of span batches with bad data that were dropped.",
TagKeys: tagKeys,
Aggregation: view.Count(),
}
receivedSpansView := &view.View{
Name: StatReceivedSpanCount.Name(),
Measure: StatReceivedSpanCount,
Description: "The number of spans received.",
TagKeys: tagKeys,
Aggregation: view.Sum(),
}
droppedSpansView := &view.View{
Name: StatDroppedSpanCount.Name(),
Measure: StatDroppedSpanCount,
Description: "The number of spans dropped.",
TagKeys: tagKeys,
Aggregation: view.Sum(),
}
droppedSpansFromBadBatchesView := &view.View{
Name: StatBadBatchDroppedSpanCount.Name(),
Measure: StatBadBatchDroppedSpanCount,
Description: "The number of spans dropped from span batches with bad data.",
TagKeys: tagKeys,
Aggregation: view.Sum(),
}
legacyViews := []*view.View{
receivedBatchesView,
droppedBatchesView,
receivedSpansView,
droppedSpansView,
droppedBadBatchesView,
droppedSpansFromBadBatchesView,
}
return obsreport.ProcessorMetricViews("", legacyViews)
}
// ServiceNameForNode gets the service name for a specified node. Used for metrics.
func ServiceNameForNode(node *commonpb.Node) string {
var serviceName string
if node == nil {
serviceName = "<nil-batch-node>"
} else if node.ServiceInfo == nil {
serviceName = "<nil-service-info>"
} else if node.ServiceInfo.Name == "" {
serviceName = "<empty-service-info-name>"
} else {
serviceName = node.ServiceInfo.Name
}
return serviceName
}
// StatsTagsForBatch gets the stat tags based on the specified processorName, serviceName, and spanFormat.
func StatsTagsForBatch(processorName, serviceName, spanFormat string) []tag.Mutator {
statsTags := []tag.Mutator{
tag.Upsert(TagSourceFormatKey, spanFormat),
tag.Upsert(TagServiceNameKey, serviceName),
tag.Upsert(TagProcessorNameKey, processorName),
}
return statsTags
}