/
obsreport.go
177 lines (154 loc) · 4.79 KB
/
obsreport.go
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// Copyright The 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 obsreport
import (
"context"
"strings"
"go.opencensus.io/stats"
"go.opencensus.io/stats/view"
"go.opencensus.io/tag"
"go.opencensus.io/trace"
"go.opentelemetry.io/collector/consumer/consumerdata"
)
const (
nameSep = "/"
)
var (
// Variables to control the usage of legacy and new metrics.
useLegacy = true
useNew = true
okStatus = trace.Status{Code: trace.StatusCodeOK}
)
// setParentLink tries to retrieve a span from parentCtx and if one exists
// sets its SpanID, TraceID as a link to the given child Span.
// It returns true only if it retrieved a parent span from the context.
//
// This is typically used when the parentCtx may already have a trace and is
// long lived (eg.: an gRPC stream, or TCP connection) and one desires distinct
// traces for individual operations under the long lived trace associated to
// the parentCtx. This function is a helper that encapsulates the work of
// linking the short lived trace/span to the longer one.
func setParentLink(parentCtx context.Context, childSpan *trace.Span) bool {
parentSpanFromRPC := trace.FromContext(parentCtx)
if parentSpanFromRPC == nil {
return false
}
psc := parentSpanFromRPC.SpanContext()
childSpan.AddLink(trace.Link{
SpanID: psc.SpanID,
TraceID: psc.TraceID,
Type: trace.LinkTypeParent,
})
return true
}
// Configure is used to control the settings that will be used by the obsreport
// package.
func Configure(generateLegacy, generateNew bool) (views []*view.View) {
// TODO: expose some level control, similar to telemetry.Level
useLegacy = generateLegacy
useNew = generateNew
if useLegacy {
views = append(views, LegacyAllViews...)
}
if useNew {
views = append(views, AllViews()...)
}
return views
}
// CountMetricPoints is a helper to count the "amount" of metrics data. For code using the
// internal data structure, pdatautil.MetricAndDataPointCount should be used instead
func CountMetricPoints(md consumerdata.MetricsData) (numTimeSeries int, numPoints int) {
for _, metric := range md.Metrics {
tss := metric.GetTimeseries()
numTimeSeries += len(tss)
for _, ts := range tss {
numPoints += len(ts.GetPoints())
}
}
return numTimeSeries, numPoints
}
func buildComponentPrefix(componentPrefix, configType string) string {
if !strings.HasSuffix(componentPrefix, nameSep) {
componentPrefix += nameSep
}
if configType == "" {
return componentPrefix
}
return componentPrefix + configType + nameSep
}
// AllViews return the list of all views that needs to be configured.
func AllViews() (views []*view.View) {
// Receiver views.
measures := []*stats.Int64Measure{
mReceiverAcceptedSpans,
mReceiverRefusedSpans,
mReceiverAcceptedMetricPoints,
mReceiverRefusedMetricPoints,
mReceiverAcceptedLogRecords,
mReceiverRefusedLogRecords,
}
tagKeys := []tag.Key{
tagKeyReceiver, tagKeyTransport,
}
views = append(views, genViews(measures, tagKeys, view.Sum())...)
// Exporter views.
measures = []*stats.Int64Measure{
mExporterSentSpans,
mExporterFailedToSendSpans,
mExporterSentMetricPoints,
mExporterFailedToSendMetricPoints,
mExporterSentLogRecords,
mExporterFailedToSendLogRecords,
}
tagKeys = []tag.Key{tagKeyExporter}
views = append(views, genViews(measures, tagKeys, view.Sum())...)
// Processor views.
measures = []*stats.Int64Measure{
mProcessorAcceptedSpans,
mProcessorRefusedSpans,
mProcessorDroppedSpans,
mProcessorAcceptedMetricPoints,
mProcessorRefusedMetricPoints,
mProcessorDroppedMetricPoints,
mProcessorAcceptedLogRecords,
mProcessorRefusedLogRecords,
mProcessorDroppedLogRecords,
}
tagKeys = []tag.Key{tagKeyProcessor}
views = append(views, genViews(measures, tagKeys, view.Sum())...)
return views
}
func genViews(
measures []*stats.Int64Measure,
tagKeys []tag.Key,
aggregation *view.Aggregation,
) []*view.View {
views := make([]*view.View, 0, len(measures))
for _, measure := range measures {
views = append(views, &view.View{
Name: measure.Name(),
Description: measure.Description(),
TagKeys: tagKeys,
Measure: measure,
Aggregation: aggregation,
})
}
return views
}
func errToStatus(err error) trace.Status {
if err != nil {
return trace.Status{Code: trace.StatusCodeUnknown, Message: err.Error()}
}
return okStatus
}