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with 598 additions and 17 deletions
vendor/github.com/openzipkin/zipkin-go/reporter/reporter.go → vendor/go.opentelemetry.io/otel/doc.go
View file @ 2988b5a6
// Copyright 2019 The OpenZipkin Authors
// 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.
......@@ -13,29 +13,22 @@
// limitations under the License.
/*
Package reporter holds the Reporter interface which is used by the Zipkin
Tracer to send finished spans.
Package otel provides global access to the OpenTelemetry API. The subpackages of
the otel package provide an implementation of the OpenTelemetry API.
Subpackages of package reporter contain officially supported standard
reporter implementations.
*/
package reporter
import "github.com/openzipkin/zipkin-go/model"
The provided API is used to instrument code and measure data about that code's
performance and operation. The measured data, by default, is not processed or
transmitted anywhere. An implementation of the OpenTelemetry SDK, like the
default SDK implementation (go.opentelemetry.io/otel/sdk), and associated
exporters are used to process and transport this data.
// Reporter interface can be used to provide the Zipkin Tracer with custom
// implementations to publish Zipkin Span data.
type Reporter interface {
Send(model.SpanModel) // Send Span data to the reporter
Close() error // Close the reporter
}
To read the getting started guide, see https://opentelemetry.io/docs/go/getting-started/.
type noopReporter struct{}
To read more about tracing, see go.opentelemetry.io/otel/trace.
func (r *noopReporter) Send(model.SpanModel) {}
func (r *noopReporter) Close() error { return nil }
To read more about metrics, see go.opentelemetry.io/otel/metric.
// NewNoopReporter returns a no-op Reporter implementation.
func NewNoopReporter() Reporter {
return &noopReporter{}
}
To read more about propagation, see go.opentelemetry.io/otel/propagation and
go.opentelemetry.io/otel/baggage.
*/
package otel // import "go.opentelemetry.io/otel"
vendor/go.opencensus.io/metric/metricdata/exemplar.go → vendor/go.opentelemetry.io/otel/error_handler.go
View file @ 2988b5a6
// Copyright 2018, OpenCensus Authors
// 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.
......@@ -12,27 +12,27 @@
// See the License for the specific language governing permissions and
// limitations under the License.
package metricdata
package otel // import "go.opentelemetry.io/otel"
import (
"time"
)
// ErrorHandler handles irremediable events.
type ErrorHandler interface {
// DO NOT CHANGE: any modification will not be backwards compatible and
// must never be done outside of a new major release.
// Exemplars keys.
const (
AttachmentKeySpanContext = "SpanContext"
)
// Exemplar is an example data point associated with each bucket of a
// distribution type aggregation.
//
// Their purpose is to provide an example of the kind of thing
// (request, RPC, trace span, etc.) that resulted in that measurement.
type Exemplar struct {
Value float64 // the value that was recorded
Timestamp time.Time // the time the value was recorded
Attachments Attachments // attachments (if any)
// Handle handles any error deemed irremediable by an OpenTelemetry
// component.
Handle(error)
// DO NOT CHANGE: any modification will not be backwards compatible and
// must never be done outside of a new major release.
}
// Attachments is a map of extra values associated with a recorded data point.
type Attachments map[string]interface{}
// ErrorHandlerFunc is a convenience adapter to allow the use of a function
// as an ErrorHandler.
type ErrorHandlerFunc func(error)
var _ ErrorHandler = ErrorHandlerFunc(nil)
// Handle handles the irremediable error by calling the ErrorHandlerFunc itself.
func (f ErrorHandlerFunc) Handle(err error) {
f(err)
}
vendor/go.opentelemetry.io/otel/exporters/zipkin/LICENSE 0 → 100644
View file @ 2988b5a6
Apache License
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http://www.apache.org/licenses/
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Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
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vendor/github.com/openzipkin/zipkin-go/doc.go → vendor/go.opentelemetry.io/otel/exporters/zipkin/doc.go
View file @ 2988b5a6
// Copyright 2019 The OpenZipkin Authors
// 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.
......@@ -12,9 +12,5 @@
// See the License for the specific language governing permissions and
// limitations under the License.
/*
Package zipkin implements a native Zipkin instrumentation library for Go.
See https://zipkin.io for more information about Zipkin.
*/
package zipkin
// Package zipkin contains an OpenTelemetry tracing exporter for Zipkin.
package zipkin // import "go.opentelemetry.io/otel/exporters/zipkin"
vendor/go.opencensus.io/metric/metricdata/unit.go → vendor/go.opentelemetry.io/otel/exporters/zipkin/env.go
View file @ 2988b5a6
// Copyright 2018, OpenCensus Authors
// 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.
......@@ -12,16 +12,20 @@
// See the License for the specific language governing permissions and
// limitations under the License.
package metricdata
package zipkin // import "go.opentelemetry.io/otel/exporters/zipkin"
// Unit is a string encoded according to the case-sensitive abbreviations from the
// Unified Code for Units of Measure: http://unitsofmeasure.org/ucum.html
type Unit string
import "os"
// Predefined units. To record against a unit not represented here, create your
// own Unit type constant from a string.
// Environment variable names.
const (
UnitDimensionless Unit = "1"
UnitBytes Unit = "By"
UnitMilliseconds Unit = "ms"
// Endpoint for Zipkin collector.
envEndpoint = "OTEL_EXPORTER_ZIPKIN_ENDPOINT"
)
// envOr returns an env variable's value if it is exists or the default if not.
func envOr(key, defaultValue string) string {
if v, ok := os.LookupEnv(key); ok && v != "" {
return v
}
return defaultValue
}
vendor/go.opentelemetry.io/otel/exporters/zipkin/model.go 0 → 100644
View file @ 2988b5a6
// 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 zipkin // import "go.opentelemetry.io/otel/exporters/zipkin"
import (
"encoding/binary"
"encoding/json"
"fmt"
"net"
"strconv"
zkmodel "github.com/openzipkin/zipkin-go/model"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/codes"
"go.opentelemetry.io/otel/sdk/resource"
tracesdk "go.opentelemetry.io/otel/sdk/trace"
semconv "go.opentelemetry.io/otel/semconv/v1.12.0"
"go.opentelemetry.io/otel/trace"
)
const (
keyInstrumentationLibraryName = "otel.library.name"
keyInstrumentationLibraryVersion = "otel.library.version"
keyPeerHostname attribute.Key = "peer.hostname"
keyPeerAddress attribute.Key = "peer.address"
)
var defaultServiceName string
func init() {
// fetch service.name from default resource for backup
defaultResource := resource.Default()
if value, exists := defaultResource.Set().Value(semconv.ServiceNameKey); exists {
defaultServiceName = value.AsString()
}
}
// SpanModels converts OpenTelemetry spans into Zipkin model spans.
// This is used for exporting to Zipkin compatible tracing services.
func SpanModels(batch []tracesdk.ReadOnlySpan) []zkmodel.SpanModel {
models := make([]zkmodel.SpanModel, 0, len(batch))
for _, data := range batch {
models = append(models, toZipkinSpanModel(data))
}
return models
}
func getServiceName(attrs []attribute.KeyValue) string {
for _, kv := range attrs {
if kv.Key == semconv.ServiceNameKey {
return kv.Value.AsString()
}
}
return defaultServiceName
}
func toZipkinSpanModel(data tracesdk.ReadOnlySpan) zkmodel.SpanModel {
return zkmodel.SpanModel{
SpanContext: toZipkinSpanContext(data),
Name: data.Name(),
Kind: toZipkinKind(data.SpanKind()),
Timestamp: data.StartTime(),
Duration: data.EndTime().Sub(data.StartTime()),
Shared: false,
LocalEndpoint: &zkmodel.Endpoint{
ServiceName: getServiceName(data.Resource().Attributes()),
},
RemoteEndpoint: toZipkinRemoteEndpoint(data),
Annotations: toZipkinAnnotations(data.Events()),
Tags: toZipkinTags(data),
}
}
func toZipkinSpanContext(data tracesdk.ReadOnlySpan) zkmodel.SpanContext {
return zkmodel.SpanContext{
TraceID: toZipkinTraceID(data.SpanContext().TraceID()),
ID: toZipkinID(data.SpanContext().SpanID()),
ParentID: toZipkinParentID(data.Parent().SpanID()),
Debug: false,
Sampled: nil,
Err: nil,
}
}
func toZipkinTraceID(traceID trace.TraceID) zkmodel.TraceID {
return zkmodel.TraceID{
High: binary.BigEndian.Uint64(traceID[:8]),
Low: binary.BigEndian.Uint64(traceID[8:]),
}
}
func toZipkinID(spanID trace.SpanID) zkmodel.ID {
return zkmodel.ID(binary.BigEndian.Uint64(spanID[:]))
}
func toZipkinParentID(spanID trace.SpanID) *zkmodel.ID {
if spanID.IsValid() {
id := toZipkinID(spanID)
return &id
}
return nil
}
func toZipkinKind(kind trace.SpanKind) zkmodel.Kind {
switch kind {
case trace.SpanKindUnspecified:
return zkmodel.Undetermined
case trace.SpanKindInternal:
// The spec says we should set the kind to nil, but
// the model does not allow that.
return zkmodel.Undetermined
case trace.SpanKindServer:
return zkmodel.Server
case trace.SpanKindClient:
return zkmodel.Client
case trace.SpanKindProducer:
return zkmodel.Producer
case trace.SpanKindConsumer:
return zkmodel.Consumer
}
return zkmodel.Undetermined
}
func toZipkinAnnotations(events []tracesdk.Event) []zkmodel.Annotation {
if len(events) == 0 {
return nil
}
annotations := make([]zkmodel.Annotation, 0, len(events))
for _, event := range events {
value := event.Name
if len(event.Attributes) > 0 {
jsonString := attributesToJSONMapString(event.Attributes)
if jsonString != "" {
value = fmt.Sprintf("%s: %s", event.Name, jsonString)
}
}
annotations = append(annotations, zkmodel.Annotation{
Timestamp: event.Time,
Value: value,
})
}
return annotations
}
func attributesToJSONMapString(attributes []attribute.KeyValue) string {
m := make(map[string]interface{}, len(attributes))
for _, a := range attributes {
m[(string)(a.Key)] = a.Value.AsInterface()
}
// if an error happens, the result will be an empty string
jsonBytes, _ := json.Marshal(m)
return (string)(jsonBytes)
}
// attributeToStringPair serializes each attribute to a string pair.
func attributeToStringPair(kv attribute.KeyValue) (string, string) {
switch kv.Value.Type() {
// For slice attributes, serialize as JSON list string.
case attribute.BOOLSLICE:
data, _ := json.Marshal(kv.Value.AsBoolSlice())
return (string)(kv.Key), (string)(data)
case attribute.INT64SLICE:
data, _ := json.Marshal(kv.Value.AsInt64Slice())
return (string)(kv.Key), (string)(data)
case attribute.FLOAT64SLICE:
data, _ := json.Marshal(kv.Value.AsFloat64Slice())
return (string)(kv.Key), (string)(data)
case attribute.STRINGSLICE:
data, _ := json.Marshal(kv.Value.AsStringSlice())
return (string)(kv.Key), (string)(data)
default:
return (string)(kv.Key), kv.Value.Emit()
}
}
// extraZipkinTags are those that may be added to every outgoing span.
var extraZipkinTags = []string{
"otel.status_code",
keyInstrumentationLibraryName,
keyInstrumentationLibraryVersion,
}
func toZipkinTags(data tracesdk.ReadOnlySpan) map[string]string {
attr := data.Attributes()
resourceAttr := data.Resource().Attributes()
m := make(map[string]string, len(attr)+len(resourceAttr)+len(extraZipkinTags))
for _, kv := range attr {
k, v := attributeToStringPair(kv)
m[k] = v
}
for _, kv := range resourceAttr {
k, v := attributeToStringPair(kv)
m[k] = v
}
if data.Status().Code != codes.Unset {
m["otel.status_code"] = data.Status().Code.String()
}
if data.Status().Code == codes.Error {
m["error"] = data.Status().Description
} else {
delete(m, "error")
}
if is := data.InstrumentationScope(); is.Name != "" {
m[keyInstrumentationLibraryName] = is.Name
if is.Version != "" {
m[keyInstrumentationLibraryVersion] = is.Version
}
}
if len(m) == 0 {
return nil
}
return m
}
// Rank determines selection order for remote endpoint. See the specification
// https://github.com/open-telemetry/opentelemetry-specification/blob/v1.0.1/specification/trace/sdk_exporters/zipkin.md#otlp---zipkin
var remoteEndpointKeyRank = map[attribute.Key]int{
semconv.PeerServiceKey: 0,
semconv.NetPeerNameKey: 1,
semconv.NetPeerIPKey: 2,
keyPeerHostname: 3,
keyPeerAddress: 4,
semconv.HTTPHostKey: 5,
semconv.DBNameKey: 6,
}
func toZipkinRemoteEndpoint(data tracesdk.ReadOnlySpan) *zkmodel.Endpoint {
// Should be set only for client or producer kind
if sk := data.SpanKind(); sk != trace.SpanKindClient && sk != trace.SpanKindProducer {
return nil
}
attr := data.Attributes()
var endpointAttr attribute.KeyValue
for _, kv := range attr {
rank, ok := remoteEndpointKeyRank[kv.Key]
if !ok {
continue
}
currentKeyRank, ok := remoteEndpointKeyRank[endpointAttr.Key]
if ok && rank < currentKeyRank {
endpointAttr = kv
} else if !ok {
endpointAttr = kv
}
}
if endpointAttr.Key == "" {
return nil
}
if endpointAttr.Key != semconv.NetPeerIPKey &&
endpointAttr.Value.Type() == attribute.STRING {
return &zkmodel.Endpoint{
ServiceName: endpointAttr.Value.AsString(),
}
}
return remoteEndpointPeerIPWithPort(endpointAttr.Value.AsString(), attr)
}
// Handles `net.peer.ip` remote endpoint separately (should include `net.peer.ip`
// as well, if available).
func remoteEndpointPeerIPWithPort(peerIP string, attrs []attribute.KeyValue) *zkmodel.Endpoint {
ip := net.ParseIP(peerIP)
if ip == nil {
return nil
}
endpoint := &zkmodel.Endpoint{}
// Determine if IPv4 or IPv6
if ip.To4() != nil {
endpoint.IPv4 = ip
} else {
endpoint.IPv6 = ip
}
for _, kv := range attrs {
if kv.Key == semconv.NetPeerPortKey {
port, _ := strconv.ParseUint(kv.Value.Emit(), 10, 16)
endpoint.Port = uint16(port)
return endpoint
}
}
return endpoint
}