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Added support for Haystack tracing

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Alex Antonov 2019-05-08 17:14:04 -05:00 • committed by Traefiker Bot
parent 681892148e
commit 9cf6827ccc
274 changed files with 38070 additions and 13436 deletions
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Apache License
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whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
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incidental, or consequential damages of any character arising as a
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Copyright [2018] Expedia Group.
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.

356
vendor/github.com/ExpediaDotCom/haystack-client-go/dispatcher.go generated vendored Normal file
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/*
* Copyright 2018 Expedia Group.
*
* 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 haystack
import (
"fmt"
"os"
"os/signal"
"time"
"github.com/opentracing/opentracing-go/ext"
"github.com/opentracing/opentracing-go/log"
)
/*Dispatcher dispatches the span object*/
type Dispatcher interface {
Name() string
Dispatch(span *_Span)
DispatchProtoSpan(span *Span)
Close()
SetLogger(logger Logger)
}
/*InMemoryDispatcher implements the Dispatcher interface*/
type InMemoryDispatcher struct {
spans []*_Span
logger Logger
}
/*NewInMemoryDispatcher creates a new in memory dispatcher*/
func NewInMemoryDispatcher() Dispatcher {
return &InMemoryDispatcher{}
}
/*Name gives the Dispatcher name*/
func (d *InMemoryDispatcher) Name() string {
return "InMemoryDispatcher"
}
/*SetLogger sets the logger to use*/
func (d *InMemoryDispatcher) SetLogger(logger Logger) {
d.logger = logger
}
/*Dispatch dispatches the span object*/
func (d *InMemoryDispatcher) Dispatch(span *_Span) {
d.spans = append(d.spans, span)
}
/*DispatchProtoSpan dispatches proto span object*/
func (d *InMemoryDispatcher) DispatchProtoSpan(span *Span) {
/* not implemented */
}
/*Close down the inMemory dispatcher*/
func (d *InMemoryDispatcher) Close() {
d.spans = nil
}
/*FileDispatcher file dispatcher*/
type FileDispatcher struct {
fileHandle *os.File
logger Logger
}
/*NewFileDispatcher creates a new file dispatcher*/
func NewFileDispatcher(filename string) Dispatcher {
fd, err := os.OpenFile(filename, os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0644)
if err != nil {
panic(err)
}
return &FileDispatcher{
fileHandle: fd,
}
}
/*Name gives the Dispatcher name*/
func (d *FileDispatcher) Name() string {
return "FileDispatcher"
}
/*SetLogger sets the logger to use*/
func (d *FileDispatcher) SetLogger(logger Logger) {
d.logger = logger
}
/*Dispatch dispatches the span object*/
func (d *FileDispatcher) Dispatch(span *_Span) {
_, err := d.fileHandle.WriteString(span.String() + "\n")
if err != nil {
panic(err)
}
}
/*DispatchProtoSpan dispatches proto span object*/
func (d *FileDispatcher) DispatchProtoSpan(span *Span) {
/* not implemented */
}
/*Close down the file dispatcher*/
func (d *FileDispatcher) Close() {
err := d.fileHandle.Close()
if err != nil {
panic(err)
}
}
/*RemoteDispatcher dispatcher, client can be grpc or http*/
type RemoteDispatcher struct {
client RemoteClient
timeout time.Duration
logger Logger
spanChannel chan *Span
}
/*NewHTTPDispatcher creates a new haystack-agent dispatcher*/
func NewHTTPDispatcher(url string, timeout time.Duration, headers map[string]string, maxQueueLength int) Dispatcher {
dispatcher := &RemoteDispatcher{
client: NewHTTPClient(url, headers, timeout),
timeout: timeout,
spanChannel: make(chan *Span, maxQueueLength),
}
go startListener(dispatcher)
return dispatcher
}
/*NewDefaultHTTPDispatcher creates a new http dispatcher*/
func NewDefaultHTTPDispatcher() Dispatcher {
return NewHTTPDispatcher("http://haystack-collector/span", 3*time.Second, make(map[string](string)), 1000)
}
/*NewAgentDispatcher creates a new haystack-agent dispatcher*/
func NewAgentDispatcher(host string, port int, timeout time.Duration, maxQueueLength int) Dispatcher {
dispatcher := &RemoteDispatcher{
client: NewGrpcClient(host, port, timeout),
timeout: timeout,
spanChannel: make(chan *Span, maxQueueLength),
}
go startListener(dispatcher)
return dispatcher
}
/*NewDefaultAgentDispatcher creates a new haystack-agent dispatcher*/
func NewDefaultAgentDispatcher() Dispatcher {
return NewAgentDispatcher("haystack-agent", 35000, 3*time.Second, 1000)
}
func startListener(dispatcher *RemoteDispatcher) {
signals := make(chan os.Signal, 1)
signal.Notify(signals, os.Interrupt, os.Kill)
for {
select {
case sp := <-dispatcher.spanChannel:
dispatcher.client.Send(sp)
case <-signals:
break
}
}
}
/*Name gives the Dispatcher name*/
func (d *RemoteDispatcher) Name() string {
return "RemoteDispatcher"
}
/*SetLogger sets the logger to use*/
func (d *RemoteDispatcher) SetLogger(logger Logger) {
d.logger = logger
d.client.SetLogger(logger)
}
/*Dispatch dispatches the span object*/
func (d *RemoteDispatcher) Dispatch(span *_Span) {
s := &Span{
TraceId: span.context.TraceID,
SpanId: span.context.SpanID,
ParentSpanId: span.context.ParentID,
ServiceName: span.ServiceName(),
OperationName: span.OperationName(),
StartTime: span.startTime.UnixNano() / int64(time.Microsecond),
Duration: span.duration.Nanoseconds() / int64(time.Microsecond),
Tags: d.tags(span),
Logs: d.logs(span),
}
d.spanChannel <- s
}
/*DispatchProtoSpan dispatches the proto span object*/
func (d *RemoteDispatcher) DispatchProtoSpan(s *Span) {
d.spanChannel <- s
}
func (d *RemoteDispatcher) logs(span *_Span) []*Log {
var spanLogs []*Log
for _, lg := range span.logs {
spanLogs = append(spanLogs, &Log{
Timestamp: lg.Timestamp.UnixNano() / int64(time.Microsecond),
Fields: d.logFieldsToTags(lg.Fields),
})
}
return spanLogs
}
func (d *RemoteDispatcher) logFieldsToTags(fields []log.Field) []*Tag {
var spanTags []*Tag
for _, field := range fields {
spanTags = append(spanTags, ConvertToProtoTag(field.Key(), field.Value()))
}
return spanTags
}
func (d *RemoteDispatcher) tags(span *_Span) []*Tag {
var spanTags []*Tag
for _, tag := range span.tags {
spanTags = append(spanTags, ConvertToProtoTag(tag.Key, tag.Value))
}
return spanTags
}
/*Close down the file dispatcher*/
func (d *RemoteDispatcher) Close() {
err := d.client.Close()
if err != nil {
d.logger.Error("Fail to close the haystack-agent dispatcher %v", err)
}
}
/*ConvertToProtoTag converts to proto tag*/
func ConvertToProtoTag(key string, value interface{}) *Tag {
switch v := value.(type) {
case string:
return &Tag{
Key: key,
Myvalue: &Tag_VStr{
VStr: value.(string),
},
Type: Tag_STRING,
}
case int:
return &Tag{
Key: key,
Myvalue: &Tag_VLong{
VLong: int64(value.(int)),
},
Type: Tag_LONG,
}
case int32:
return &Tag{
Key: key,
Myvalue: &Tag_VLong{
VLong: int64(value.(int32)),
},
Type: Tag_LONG,
}
case int16:
return &Tag{
Key: key,
Myvalue: &Tag_VLong{
VLong: int64(value.(int16)),
},
Type: Tag_LONG,
}
case int64:
return &Tag{
Key: key,
Myvalue: &Tag_VLong{
VLong: value.(int64),
},
Type: Tag_LONG,
}
case uint16:
return &Tag{
Key: key,
Myvalue: &Tag_VLong{
VLong: int64(value.(uint16)),
},
Type: Tag_LONG,
}
case uint32:
return &Tag{
Key: key,
Myvalue: &Tag_VLong{
VLong: int64(value.(uint32)),
},
Type: Tag_LONG,
}
case uint64:
return &Tag{
Key: key,
Myvalue: &Tag_VLong{
VLong: int64(value.(uint64)),
},
Type: Tag_LONG,
}
case float32:
return &Tag{
Key: key,
Myvalue: &Tag_VDouble{
VDouble: float64(value.(float32)),
},
Type: Tag_DOUBLE,
}
case float64:
return &Tag{
Key: key,
Myvalue: &Tag_VDouble{
VDouble: value.(float64),
},
Type: Tag_DOUBLE,
}
case bool:
return &Tag{
Key: key,
Myvalue: &Tag_VBool{
VBool: value.(bool),
},
Type: Tag_BOOL,
}
case []byte:
return &Tag{
Key: key,
Myvalue: &Tag_VBytes{
VBytes: value.([]byte),
},
Type: Tag_BINARY,
}
case ext.SpanKindEnum:
return &Tag{
Key: key,
Myvalue: &Tag_VStr{
VStr: string(value.(ext.SpanKindEnum)),
},
Type: Tag_STRING,
}
default:
panic(fmt.Errorf("unknown format %v", v))
}
}

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vendor/github.com/ExpediaDotCom/haystack-client-go/logger.go generated vendored Normal file
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/*
* Copyright 2018 Expedia Group.
*
* 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 haystack
/*Logger defines a new logger interface*/
type Logger interface {
Info(format string, v ...interface{})
Error(format string, v ...interface{})
Debug(format string, v ...interface{})
}
/*NullLogger does nothing*/
type NullLogger struct{}
/*Error prints the error message*/
func (logger NullLogger) Error(format string, v ...interface{}) {}
/*Info prints the info message*/
func (logger NullLogger) Info(format string, v ...interface{}) {}
/*Debug prints the info message*/
func (logger NullLogger) Debug(format string, v ...interface{}) {}

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vendor/github.com/ExpediaDotCom/haystack-client-go/propagator.go generated vendored Normal file
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/*
* Copyright 2018 Expedia Group.
*
* 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 haystack
import (
"fmt"
"net/url"
"strings"
"github.com/opentracing/opentracing-go"
)
/*Propagator defines the interface for injecting and extracing the SpanContext from the carrier*/
type Propagator interface {
// Inject takes `SpanContext` and injects it into `carrier`
Inject(ctx *SpanContext, carrier interface{}) error
// Extract `SpanContext` from the `carrier`
Extract(carrier interface{}) (*SpanContext, error)
}
/*Codex defines the interface for encoding and decoding the propagated data*/
type Codex interface {
Encode(value string) string
Decode(value string) string
}
/*DefaultCodex is a no op*/
type DefaultCodex struct{}
/*Encode a no-op for encoding the value*/
func (c DefaultCodex) Encode(value string) string { return value }
/*Decode a no-op for decoding the value*/
func (c DefaultCodex) Decode(value string) string { return value }
/*URLCodex encodes decodes a url*/
type URLCodex struct{}
/*Encode a no-op for encoding the value*/
func (c URLCodex) Encode(value string) string { return url.QueryEscape(value) }
/*Decode a no-op for decoding the value*/
func (c URLCodex) Decode(value string) string {
decoded, err := url.QueryUnescape(value)
if err == nil {
return decoded
}
return ""
}
/*PropagatorOpts defines the options need by a propagator*/
type PropagatorOpts struct {
TraceIDKEYName string
SpanIDKEYName string
ParentSpanIDKEYName string
BaggagePrefixKEYName string
}
var defaultPropagatorOpts = PropagatorOpts{}
var defaultCodex = DefaultCodex{}
/*TraceIDKEY returns the trace id key in the propagator*/
func (p *PropagatorOpts) TraceIDKEY() string {
if p.TraceIDKEYName != "" {
return p.TraceIDKEYName
}
return "Trace-ID"
}
/*SpanIDKEY returns the span id key in the propagator*/
func (p *PropagatorOpts) SpanIDKEY() string {
if p.SpanIDKEYName != "" {
return p.SpanIDKEYName
}
return "Span-ID"
}
/*ParentSpanIDKEY returns the parent span id key in the propagator*/
func (p *PropagatorOpts) ParentSpanIDKEY() string {
if p.ParentSpanIDKEYName != "" {
return p.ParentSpanIDKEYName
}
return "Parent-ID"
}
/*BaggageKeyPrefix returns the baggage key prefix*/
func (p *PropagatorOpts) BaggageKeyPrefix() string {
if p.BaggagePrefixKEYName != "" {
return p.BaggagePrefixKEYName
}
return "Baggage-"
}
/*TextMapPropagator implements Propagator interface*/
type TextMapPropagator struct {
opts PropagatorOpts
codex Codex
}
/*Inject injects the span context in the carrier*/
func (p *TextMapPropagator) Inject(ctx *SpanContext, carrier interface{}) error {
textMapWriter, ok := carrier.(opentracing.TextMapWriter)
if !ok {
return opentracing.ErrInvalidCarrier
}
textMapWriter.Set(p.opts.TraceIDKEY(), ctx.TraceID)
textMapWriter.Set(p.opts.SpanIDKEY(), ctx.SpanID)
textMapWriter.Set(p.opts.ParentSpanIDKEY(), ctx.ParentID)
ctx.ForeachBaggageItem(func(key, value string) bool {
textMapWriter.Set(fmt.Sprintf("%s%s", p.opts.BaggageKeyPrefix(), key), p.codex.Encode(ctx.Baggage[key]))
return true
})
return nil
}
/*Extract the span context from the carrier*/
func (p *TextMapPropagator) Extract(carrier interface{}) (*SpanContext, error) {
textMapReader, ok := carrier.(opentracing.TextMapReader)
if !ok {
return nil, opentracing.ErrInvalidCarrier
}
baggageKeyLowerCasePrefix := strings.ToLower(p.opts.BaggageKeyPrefix())
traceIDKeyLowerCase := strings.ToLower(p.opts.TraceIDKEY())
spanIDKeyLowerCase := strings.ToLower(p.opts.SpanIDKEY())
parentSpanIDKeyLowerCase := strings.ToLower(p.opts.ParentSpanIDKEY())
traceID := ""
spanID := ""
parentSpanID := ""
baggage := make(map[string]string)
err := textMapReader.ForeachKey(func(k, v string) error {
lcKey := strings.ToLower(k)
if strings.HasPrefix(lcKey, baggageKeyLowerCasePrefix) {
keySansPrefix := lcKey[len(p.opts.BaggageKeyPrefix()):]
baggage[keySansPrefix] = p.codex.Decode(v)
} else if lcKey == traceIDKeyLowerCase {
traceID = v
} else if lcKey == spanIDKeyLowerCase {
spanID = v
} else if lcKey == parentSpanIDKeyLowerCase {
parentSpanID = v
}
return nil
})
if err != nil {
return nil, err
}
return &SpanContext{
TraceID: traceID,
SpanID: spanID,
ParentID: parentSpanID,
Baggage: baggage,
IsExtractedContext: true,
}, nil
}
/*NewDefaultTextMapPropagator returns a default text map propagator*/
func NewDefaultTextMapPropagator() *TextMapPropagator {
return NewTextMapPropagator(defaultPropagatorOpts, defaultCodex)
}
/*NewTextMapPropagator returns a text map propagator*/
func NewTextMapPropagator(opts PropagatorOpts, codex Codex) *TextMapPropagator {
return &TextMapPropagator{
opts: opts,
codex: codex,
}
}

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vendor/github.com/ExpediaDotCom/haystack-client-go/remote_client.go generated vendored Normal file
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/*
* Copyright 2018 Expedia Group.
*
* 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 haystack
import (
"bytes"
"fmt"
"io/ioutil"
"net/http"
"time"
"github.com/golang/protobuf/proto"
context "golang.org/x/net/context"
grpc "google.golang.org/grpc"
)
/*RemoteClient remote client*/
type RemoteClient interface {
Send(span *Span)
Close() error
SetLogger(logger Logger)
}
/*GrpcClient grpc client*/
type GrpcClient struct {
conn *grpc.ClientConn
client SpanAgentClient
timeout time.Duration
logger Logger
}
/*NewGrpcClient returns a new grpc client*/
func NewGrpcClient(host string, port int, timeout time.Duration) *GrpcClient {
targetHost := fmt.Sprintf("%s:%d", host, port)
conn, err := grpc.Dial(targetHost, grpc.WithInsecure())
if err != nil {
panic(fmt.Sprintf("fail to connect to agent with error: %v", err))
}
return &GrpcClient{
conn: conn,
client: NewSpanAgentClient(conn),
timeout: timeout,
}
}
/*Send a proto span to grpc server*/
func (c *GrpcClient) Send(span *Span) {
ctx, cancel := context.WithTimeout(context.Background(), c.timeout)
defer cancel()
result, err := c.client.Dispatch(ctx, span)
if err != nil {
c.logger.Error("Fail to dispatch to haystack-agent with error %v", err)
} else if result.GetCode() != DispatchResult_SUCCESS {
c.logger.Error(fmt.Sprintf("Fail to dispatch to haystack-agent with error code: %d, message :%s", result.GetCode(), result.GetErrorMessage()))
} else {
c.logger.Debug(fmt.Sprintf("span [%v] has been successfully dispatched to haystack", span))
}
}
/*Close the grpc client*/
func (c *GrpcClient) Close() error {
return c.conn.Close()
}
/*SetLogger sets the logger*/
func (c *GrpcClient) SetLogger(logger Logger) {
c.logger = logger
}
/*HTTPClient a http client*/
type HTTPClient struct {
url string
headers map[string]string
client *http.Client
logger Logger
}
/*NewHTTPClient returns a new http client*/
func NewHTTPClient(url string, headers map[string]string, timeout time.Duration) *HTTPClient {
httpClient := &http.Client{
Timeout: timeout,
}
return &HTTPClient{
url: url,
headers: headers,
client: httpClient,
}
}
/*Send a proto span to http server*/
func (c *HTTPClient) Send(span *Span) {
serializedBytes, marshalErr := proto.Marshal(span)
if marshalErr != nil {
c.logger.Error("Fail to serialize the span to proto bytes, error=%v", marshalErr)
return
}
postRequest, requestErr := http.NewRequest(http.MethodPost, c.url, bytes.NewReader(serializedBytes))
if requestErr != nil {
c.logger.Error("Fail to create request for posting span to haystack server, error=%v", requestErr)
return
}
if c.headers != nil {
for k, v := range c.headers {
postRequest.Header.Add(k, v)
}
}
resp, err := c.client.Do(postRequest)
if err != nil {
c.logger.Error("Fail to dispatch to haystack http server, error=%v", err)
}
defer func() {
closeErr := resp.Body.Close()
if closeErr != nil {
/* do nothing */
}
}()
respBytes, respErr := ioutil.ReadAll(resp.Body)
if respErr != nil {
c.logger.Error("Fail to read the http response from haystack server, error=%v", respErr)
return
}
if resp.StatusCode < 200 || resp.StatusCode >= 300 {
c.logger.Error("Fail to dispatch the span to haystack http server with statusCode=%d , payload=%s", resp.StatusCode, string(respBytes))
} else {
c.logger.Debug(fmt.Sprintf("span [%v] has been successfully dispatched to haystack, response=%s", span, string(respBytes)))
}
}
/*Close the http client*/
func (c *HTTPClient) Close() error {
return nil
}
/*SetLogger sets the logger*/
func (c *HTTPClient) SetLogger(logger Logger) {
c.logger = logger
}

164
vendor/github.com/ExpediaDotCom/haystack-client-go/span.go generated vendored Normal file
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@ -0,0 +1,164 @@
/*
* Copyright 2018 Expedia Group.
*
* 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 haystack
import (
"encoding/json"
"time"
"github.com/opentracing/opentracing-go"
"github.com/opentracing/opentracing-go/log"
)
/*_Span implements opentracing.Span*/
type _Span struct {
tracer *Tracer
context *SpanContext
operationName string
// startTime is the timestamp indicating when the span began, with microseconds precision.
startTime time.Time
// duration returns duration of the span with microseconds precision.
duration time.Duration
tags []opentracing.Tag
logs []opentracing.LogRecord
}
// SetOperationName sets or changes the operation name.
func (span *_Span) SetOperationName(operationName string) opentracing.Span {
span.operationName = operationName
return span
}
// SetTag implements SetTag() of opentracing.Span
func (span *_Span) SetTag(key string, value interface{}) opentracing.Span {
span.tags = append(span.tags,
opentracing.Tag{
Key: key,
Value: value,
})
return span
}
// LogFields implements opentracing.Span API
func (span *_Span) LogFields(fields ...log.Field) {
log := opentracing.LogRecord{
Fields: fields,
Timestamp: time.Now(),
}
span.logs = append(span.logs, log)
}
// LogKV implements opentracing.Span API
func (span *_Span) LogKV(alternatingKeyValues ...interface{}) {
fields, err := log.InterleavedKVToFields(alternatingKeyValues...)
if err != nil {
span.LogFields(log.Error(err), log.String("function", "LogKV"))
return
}
span.LogFields(fields...)
}
// LogEvent implements opentracing.Span API
func (span *_Span) LogEvent(event string) {
span.Log(opentracing.LogData{Event: event})
}
// LogEventWithPayload implements opentracing.Span API
func (span *_Span) LogEventWithPayload(event string, payload interface{}) {
span.Log(opentracing.LogData{Event: event, Payload: payload})
}
// Log implements opentracing.Span API
func (span *_Span) Log(ld opentracing.LogData) {
span.logs = append(span.logs, ld.ToLogRecord())
}
// SetBaggageItem implements SetBaggageItem() of opentracing.SpanContext
func (span *_Span) SetBaggageItem(key, value string) opentracing.Span {
span.context = span.context.WithBaggageItem(key, value)
span.LogFields(log.String("event", "baggage"), log.String("payload", key), log.String("payload", value))
return span
}
// BaggageItem implements BaggageItem() of opentracing.SpanContext
func (span *_Span) BaggageItem(key string) string {
return span.context.Baggage[key]
}
// Finish implements opentracing.Span API
func (span *_Span) Finish() {
span.FinishWithOptions(opentracing.FinishOptions{})
}
// FinishWithOptions implements opentracing.Span API
func (span *_Span) FinishWithOptions(options opentracing.FinishOptions) {
if options.FinishTime.IsZero() {
options.FinishTime = span.tracer.timeNow()
}
span.duration = options.FinishTime.Sub(span.startTime)
if options.LogRecords != nil {
span.logs = append(span.logs, options.LogRecords...)
}
for _, ld := range options.BulkLogData {
span.logs = append(span.logs, ld.ToLogRecord())
}
span.tracer.DispatchSpan(span)
}
// Context implements opentracing.Span API
func (span *_Span) Context() opentracing.SpanContext {
return span.context
}
/*Tracer returns the tracer*/
func (span *_Span) Tracer() opentracing.Tracer {
return span.tracer
}
/*OperationName allows retrieving current operation name*/
func (span *_Span) OperationName() string {
return span.operationName
}
/*ServiceName returns the name of the service*/
func (span *_Span) ServiceName() string {
return span.tracer.serviceName
}
func (span *_Span) String() string {
data, err := json.Marshal(map[string]interface{}{
"traceId": span.context.TraceID,
"spanId": span.context.SpanID,
"parentSpanId": span.context.ParentID,
"operationName": span.OperationName(),
"serviceName": span.ServiceName(),
"tags": span.Tags(),
"logs": span.logs,
})
if err != nil {
panic(err)
}
return string(data)
}
func (span *_Span) Tags() []opentracing.Tag {
return span.tags
}

433
vendor/github.com/ExpediaDotCom/haystack-client-go/span.pb.go generated vendored Normal file
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@ -0,0 +1,433 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// source: span.proto
package haystack
import (
fmt "fmt"
proto "github.com/golang/protobuf/proto"
math "math"
)
// Reference imports to suppress errors if they are not otherwise used.
var _ = proto.Marshal
var _ = fmt.Errorf
var _ = math.Inf
// This is a compile-time assertion to ensure that this generated file
// is compatible with the proto package it is being compiled against.
// A compilation error at this line likely means your copy of the
// proto package needs to be updated.
const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
// TagType denotes the type of a Tag's value.
type Tag_TagType int32
const (
Tag_STRING Tag_TagType = 0
Tag_DOUBLE Tag_TagType = 1
Tag_BOOL Tag_TagType = 2
Tag_LONG Tag_TagType = 3
Tag_BINARY Tag_TagType = 4
)
var Tag_TagType_name = map[int32]string{
0: "STRING",
1: "DOUBLE",
2: "BOOL",
3: "LONG",
4: "BINARY",
}
var Tag_TagType_value = map[string]int32{
"STRING": 0,
"DOUBLE": 1,
"BOOL": 2,
"LONG": 3,
"BINARY": 4,
}
func (x Tag_TagType) String() string {
return proto.EnumName(Tag_TagType_name, int32(x))
}
func (Tag_TagType) EnumDescriptor() ([]byte, []int) {
return fileDescriptor_fc5f2b88b579999f, []int{2, 0}
}
// Span represents a unit of work performed by a service.
type Span struct {
TraceId string `protobuf:"bytes,1,opt,name=traceId,proto3" json:"traceId,omitempty"`
SpanId string `protobuf:"bytes,2,opt,name=spanId,proto3" json:"spanId,omitempty"`
ParentSpanId string `protobuf:"bytes,3,opt,name=parentSpanId,proto3" json:"parentSpanId,omitempty"`
ServiceName string `protobuf:"bytes,4,opt,name=serviceName,proto3" json:"serviceName,omitempty"`
OperationName string `protobuf:"bytes,5,opt,name=operationName,proto3" json:"operationName,omitempty"`
StartTime int64 `protobuf:"varint,6,opt,name=startTime,proto3" json:"startTime,omitempty"`
Duration int64 `protobuf:"varint,7,opt,name=duration,proto3" json:"duration,omitempty"`
Logs []*Log `protobuf:"bytes,8,rep,name=logs,proto3" json:"logs,omitempty"`
Tags []*Tag `protobuf:"bytes,9,rep,name=tags,proto3" json:"tags,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *Span) Reset() { *m = Span{} }
func (m *Span) String() string { return proto.CompactTextString(m) }
func (*Span) ProtoMessage() {}
func (*Span) Descriptor() ([]byte, []int) {
return fileDescriptor_fc5f2b88b579999f, []int{0}
}
func (m *Span) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Span.Unmarshal(m, b)
}
func (m *Span) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Span.Marshal(b, m, deterministic)
}
func (m *Span) XXX_Merge(src proto.Message) {
xxx_messageInfo_Span.Merge(m, src)
}
func (m *Span) XXX_Size() int {
return xxx_messageInfo_Span.Size(m)
}
func (m *Span) XXX_DiscardUnknown() {
xxx_messageInfo_Span.DiscardUnknown(m)
}
var xxx_messageInfo_Span proto.InternalMessageInfo
func (m *Span) GetTraceId() string {
if m != nil {
return m.TraceId
}
return ""
}
func (m *Span) GetSpanId() string {
if m != nil {
return m.SpanId
}
return ""
}
func (m *Span) GetParentSpanId() string {
if m != nil {
return m.ParentSpanId
}
return ""
}
func (m *Span) GetServiceName() string {
if m != nil {
return m.ServiceName
}
return ""
}
func (m *Span) GetOperationName() string {
if m != nil {
return m.OperationName
}
return ""
}
func (m *Span) GetStartTime() int64 {
if m != nil {
return m.StartTime
}
return 0
}
func (m *Span) GetDuration() int64 {
if m != nil {
return m.Duration
}
return 0
}
func (m *Span) GetLogs() []*Log {
if m != nil {
return m.Logs
}
return nil
}
func (m *Span) GetTags() []*Tag {
if m != nil {
return m.Tags
}
return nil
}
// Log is a timestamped event with a set of tags.
type Log struct {
Timestamp int64 `protobuf:"varint,1,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
Fields []*Tag `protobuf:"bytes,2,rep,name=fields,proto3" json:"fields,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *Log) Reset() { *m = Log{} }
func (m *Log) String() string { return proto.CompactTextString(m) }
func (*Log) ProtoMessage() {}
func (*Log) Descriptor() ([]byte, []int) {
return fileDescriptor_fc5f2b88b579999f, []int{1}
}
func (m *Log) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Log.Unmarshal(m, b)
}
func (m *Log) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Log.Marshal(b, m, deterministic)
}
func (m *Log) XXX_Merge(src proto.Message) {
xxx_messageInfo_Log.Merge(m, src)
}
func (m *Log) XXX_Size() int {
return xxx_messageInfo_Log.Size(m)
}
func (m *Log) XXX_DiscardUnknown() {
xxx_messageInfo_Log.DiscardUnknown(m)
}
var xxx_messageInfo_Log proto.InternalMessageInfo
func (m *Log) GetTimestamp() int64 {
if m != nil {
return m.Timestamp
}
return 0
}
func (m *Log) GetFields() []*Tag {
if m != nil {
return m.Fields
}
return nil
}
// Tag is a strongly typed key/value pair. We use 'oneof' protobuf attribute to represent the possible tagTypes
type Tag struct {
Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
Type Tag_TagType `protobuf:"varint,2,opt,name=type,proto3,enum=Tag_TagType" json:"type,omitempty"`
// Types that are valid to be assigned to Myvalue:
// *Tag_VStr
// *Tag_VLong
// *Tag_VDouble
// *Tag_VBool
// *Tag_VBytes
Myvalue isTag_Myvalue `protobuf_oneof:"myvalue"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *Tag) Reset() { *m = Tag{} }
func (m *Tag) String() string { return proto.CompactTextString(m) }
func (*Tag) ProtoMessage() {}
func (*Tag) Descriptor() ([]byte, []int) {
return fileDescriptor_fc5f2b88b579999f, []int{2}
}
func (m *Tag) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Tag.Unmarshal(m, b)
}
func (m *Tag) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Tag.Marshal(b, m, deterministic)
}
func (m *Tag) XXX_Merge(src proto.Message) {
xxx_messageInfo_Tag.Merge(m, src)
}
func (m *Tag) XXX_Size() int {
return xxx_messageInfo_Tag.Size(m)
}
func (m *Tag) XXX_DiscardUnknown() {
xxx_messageInfo_Tag.DiscardUnknown(m)
}
var xxx_messageInfo_Tag proto.InternalMessageInfo
func (m *Tag) GetKey() string {
if m != nil {
return m.Key
}
return ""
}
func (m *Tag) GetType() Tag_TagType {
if m != nil {
return m.Type
}
return Tag_STRING
}
type isTag_Myvalue interface {
isTag_Myvalue()
}
type Tag_VStr struct {
VStr string `protobuf:"bytes,3,opt,name=vStr,proto3,oneof"`
}
type Tag_VLong struct {
VLong int64 `protobuf:"varint,4,opt,name=vLong,proto3,oneof"`
}
type Tag_VDouble struct {
VDouble float64 `protobuf:"fixed64,5,opt,name=vDouble,proto3,oneof"`
}
type Tag_VBool struct {
VBool bool `protobuf:"varint,6,opt,name=vBool,proto3,oneof"`
}
type Tag_VBytes struct {
VBytes []byte `protobuf:"bytes,7,opt,name=vBytes,proto3,oneof"`
}
func (*Tag_VStr) isTag_Myvalue() {}
func (*Tag_VLong) isTag_Myvalue() {}
func (*Tag_VDouble) isTag_Myvalue() {}
func (*Tag_VBool) isTag_Myvalue() {}
func (*Tag_VBytes) isTag_Myvalue() {}
func (m *Tag) GetMyvalue() isTag_Myvalue {
if m != nil {
return m.Myvalue
}
return nil
}
func (m *Tag) GetVStr() string {
if x, ok := m.GetMyvalue().(*Tag_VStr); ok {
return x.VStr
}
return ""
}
func (m *Tag) GetVLong() int64 {
if x, ok := m.GetMyvalue().(*Tag_VLong); ok {
return x.VLong
}
return 0
}
func (m *Tag) GetVDouble() float64 {
if x, ok := m.GetMyvalue().(*Tag_VDouble); ok {
return x.VDouble
}
return 0
}
func (m *Tag) GetVBool() bool {
if x, ok := m.GetMyvalue().(*Tag_VBool); ok {
return x.VBool
}
return false
}
func (m *Tag) GetVBytes() []byte {
if x, ok := m.GetMyvalue().(*Tag_VBytes); ok {
return x.VBytes
}
return nil
}
// XXX_OneofWrappers is for the internal use of the proto package.
func (*Tag) XXX_OneofWrappers() []interface{} {
return []interface{}{
(*Tag_VStr)(nil),
(*Tag_VLong)(nil),
(*Tag_VDouble)(nil),
(*Tag_VBool)(nil),
(*Tag_VBytes)(nil),
}
}
// You can optionally use Batch to send a collection of spans. Spans may not necessarily belong to one traceId.
type Batch struct {
Spans []*Span `protobuf:"bytes,1,rep,name=spans,proto3" json:"spans,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *Batch) Reset() { *m = Batch{} }
func (m *Batch) String() string { return proto.CompactTextString(m) }
func (*Batch) ProtoMessage() {}
func (*Batch) Descriptor() ([]byte, []int) {
return fileDescriptor_fc5f2b88b579999f, []int{3}
}
func (m *Batch) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Batch.Unmarshal(m, b)
}
func (m *Batch) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Batch.Marshal(b, m, deterministic)
}
func (m *Batch) XXX_Merge(src proto.Message) {
xxx_messageInfo_Batch.Merge(m, src)
}
func (m *Batch) XXX_Size() int {
return xxx_messageInfo_Batch.Size(m)
}
func (m *Batch) XXX_DiscardUnknown() {
xxx_messageInfo_Batch.DiscardUnknown(m)
}
var xxx_messageInfo_Batch proto.InternalMessageInfo
func (m *Batch) GetSpans() []*Span {
if m != nil {
return m.Spans
}
return nil
}
func init() {
proto.RegisterEnum("Tag_TagType", Tag_TagType_name, Tag_TagType_value)
proto.RegisterType((*Span)(nil), "Span")
proto.RegisterType((*Log)(nil), "Log")
proto.RegisterType((*Tag)(nil), "Tag")
proto.RegisterType((*Batch)(nil), "Batch")
}
func init() { proto.RegisterFile("span.proto", fileDescriptor_fc5f2b88b579999f) }
var fileDescriptor_fc5f2b88b579999f = []byte{
// 456 bytes of a gzipped FileDescriptorProto
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0x3a, 0x4a, 0x45, 0x8b, 0xa7, 0x07, 0xcf, 0x54, 0xf6, 0xeb, 0xff, 0x00, 0x00, 0x00, 0xff, 0xff,
0xdd, 0x60, 0xee, 0x6b, 0xc0, 0x02, 0x00, 0x00,
}

197
vendor/github.com/ExpediaDotCom/haystack-client-go/spanAgent.pb.go generated vendored Normal file
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@ -0,0 +1,197 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// source: spanAgent.proto
package haystack
import (
context "context"
fmt "fmt"
proto "github.com/golang/protobuf/proto"
grpc "google.golang.org/grpc"
math "math"
)
// Reference imports to suppress errors if they are not otherwise used.
var _ = proto.Marshal
var _ = fmt.Errorf
var _ = math.Inf
// This is a compile-time assertion to ensure that this generated file
// is compatible with the proto package it is being compiled against.
// A compilation error at this line likely means your copy of the
// proto package needs to be updated.
const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
type DispatchResult_ResultCode int32
const (
DispatchResult_SUCCESS DispatchResult_ResultCode = 0
DispatchResult_UNKNOWN_ERROR DispatchResult_ResultCode = 1
DispatchResult_RATE_LIMIT_ERROR DispatchResult_ResultCode = 2
)
var DispatchResult_ResultCode_name = map[int32]string{
0: "SUCCESS",
1: "UNKNOWN_ERROR",
2: "RATE_LIMIT_ERROR",
}
var DispatchResult_ResultCode_value = map[string]int32{
"SUCCESS": 0,
"UNKNOWN_ERROR": 1,
"RATE_LIMIT_ERROR": 2,
}
func (x DispatchResult_ResultCode) String() string {
return proto.EnumName(DispatchResult_ResultCode_name, int32(x))
}
func (DispatchResult_ResultCode) EnumDescriptor() ([]byte, []int) {
return fileDescriptor_5a4cb81dd7dcc459, []int{0, 0}
}
type DispatchResult struct {
Code DispatchResult_ResultCode `protobuf:"varint,1,opt,name=code,proto3,enum=DispatchResult_ResultCode" json:"code,omitempty"`
ErrorMessage string `protobuf:"bytes,2,opt,name=error_message,json=errorMessage,proto3" json:"error_message,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *DispatchResult) Reset() { *m = DispatchResult{} }
func (m *DispatchResult) String() string { return proto.CompactTextString(m) }
func (*DispatchResult) ProtoMessage() {}
func (*DispatchResult) Descriptor() ([]byte, []int) {
return fileDescriptor_5a4cb81dd7dcc459, []int{0}
}
func (m *DispatchResult) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_DispatchResult.Unmarshal(m, b)
}
func (m *DispatchResult) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_DispatchResult.Marshal(b, m, deterministic)
}
func (m *DispatchResult) XXX_Merge(src proto.Message) {
xxx_messageInfo_DispatchResult.Merge(m, src)
}
func (m *DispatchResult) XXX_Size() int {
return xxx_messageInfo_DispatchResult.Size(m)
}
func (m *DispatchResult) XXX_DiscardUnknown() {
xxx_messageInfo_DispatchResult.DiscardUnknown(m)
}
var xxx_messageInfo_DispatchResult proto.InternalMessageInfo
func (m *DispatchResult) GetCode() DispatchResult_ResultCode {
if m != nil {
return m.Code
}
return DispatchResult_SUCCESS
}
func (m *DispatchResult) GetErrorMessage() string {
if m != nil {
return m.ErrorMessage
}
return ""
}
func init() {
proto.RegisterEnum("DispatchResult_ResultCode", DispatchResult_ResultCode_name, DispatchResult_ResultCode_value)
proto.RegisterType((*DispatchResult)(nil), "DispatchResult")
}
func init() { proto.RegisterFile("spanAgent.proto", fileDescriptor_5a4cb81dd7dcc459) }
var fileDescriptor_5a4cb81dd7dcc459 = []byte{
// 254 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x5c, 0x90, 0xc1, 0x4a, 0xf3, 0x40,
0x10, 0xc7, 0xbf, 0x2d, 0x9f, 0xda, 0x8e, 0xb6, 0x8d, 0x8b, 0x87, 0x92, 0x53, 0x89, 0x97, 0x9e,
0x56, 0xa9, 0x4f, 0xd0, 0xc6, 0x1c, 0x8a, 0x36, 0x95, 0x4d, 0x8b, 0xe0, 0x25, 0x8c, 0x9b, 0x21,
0x0d, 0xda, 0xec, 0xb2, 0xbb, 0x82, 0x3e, 0x92, 0x6f, 0x29, 0x4d, 0x2a, 0xa2, 0xa7, 0x19, 0x7e,
0x33, 0x03, 0xff, 0xf9, 0xc1, 0xd0, 0x19, 0xac, 0x67, 0x25, 0xd5, 0x5e, 0x18, 0xab, 0xbd, 0x0e,
0x61, 0x0f, 0xda, 0x3e, 0xfa, 0x64, 0x30, 0xb8, 0xad, 0x9c, 0x41, 0xaf, 0xb6, 0x92, 0xdc, 0xdb,
0xab, 0xe7, 0x02, 0xfe, 0x2b, 0x5d, 0xd0, 0x88, 0x8d, 0xd9, 0x64, 0x30, 0x0d, 0xc5, 0xef, 0xb1,
0x68, 0x4b, 0xac, 0x0b, 0x92, 0xcd, 0x1e, 0xbf, 0x84, 0x3e, 0x59, 0xab, 0x6d, 0xbe, 0x23, 0xe7,
0xb0, 0xa4, 0x51, 0x67, 0xcc, 0x26, 0x3d, 0x79, 0xd6, 0xc0, 0x65, 0xcb, 0xa2, 0x39, 0xc0, 0xcf,
0x21, 0x3f, 0x85, 0x93, 0x6c, 0x13, 0xc7, 0x49, 0x96, 0x05, 0xff, 0xf8, 0x39, 0xf4, 0x37, 0xe9,
0x5d, 0xba, 0x7a, 0x4c, 0xf3, 0x44, 0xca, 0x95, 0x0c, 0x18, 0xbf, 0x80, 0x40, 0xce, 0xd6, 0x49,
0x7e, 0xbf, 0x58, 0x2e, 0xd6, 0x07, 0xda, 0x99, 0x5e, 0x41, 0x2f, 0xfb, 0x7e, 0x85, 0x47, 0xd0,
0x2d, 0x0e, 0xc1, 0xf8, 0x91, 0xd8, 0xf3, 0x70, 0xf8, 0x27, 0xea, 0xfc, 0x1a, 0x22, 0xa5, 0x77,
0x82, 0xde, 0x0d, 0x15, 0x15, 0x0a, 0x6d, 0xa8, 0x16, 0xde, 0xa2, 0xaa, 0xea, 0x52, 0x60, 0x23,
0x04, 0x4d, 0xf5, 0xc0, 0x9e, 0xba, 0x5b, 0xfc, 0x70, 0x1e, 0xd5, 0xcb, 0xf3, 0x71, 0x63, 0xe5,
0xe6, 0x2b, 0x00, 0x00, 0xff, 0xff, 0x30, 0xb9, 0x7d, 0x07, 0x34, 0x01, 0x00, 0x00,
}
// Reference imports to suppress errors if they are not otherwise used.
var _ context.Context
var _ grpc.ClientConn
// This is a compile-time assertion to ensure that this generated file
// is compatible with the grpc package it is being compiled against.
const _ = grpc.SupportPackageIsVersion4
// SpanAgentClient is the client API for SpanAgent service.
//
// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
type SpanAgentClient interface {
Dispatch(ctx context.Context, in *Span, opts ...grpc.CallOption) (*DispatchResult, error)
}
type spanAgentClient struct {
cc *grpc.ClientConn
}
func NewSpanAgentClient(cc *grpc.ClientConn) SpanAgentClient {
return &spanAgentClient{cc}
}
func (c *spanAgentClient) Dispatch(ctx context.Context, in *Span, opts ...grpc.CallOption) (*DispatchResult, error) {
out := new(DispatchResult)
err := c.cc.Invoke(ctx, "/SpanAgent/dispatch", in, out, opts...)
if err != nil {
return nil, err
}
return out, nil
}
// SpanAgentServer is the server API for SpanAgent service.
type SpanAgentServer interface {
Dispatch(context.Context, *Span) (*DispatchResult, error)
}
func RegisterSpanAgentServer(s *grpc.Server, srv SpanAgentServer) {
s.RegisterService(&_SpanAgent_serviceDesc, srv)
}
func _SpanAgent_Dispatch_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(Span)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(SpanAgentServer).Dispatch(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/SpanAgent/Dispatch",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(SpanAgentServer).Dispatch(ctx, req.(*Span))
}
return interceptor(ctx, in, info, handler)
}
var _SpanAgent_serviceDesc = grpc.ServiceDesc{
ServiceName: "SpanAgent",
HandlerType: (*SpanAgentServer)(nil),
Methods: []grpc.MethodDesc{
{
MethodName: "dispatch",
Handler: _SpanAgent_Dispatch_Handler,
},
},
Streams: []grpc.StreamDesc{},
Metadata: "spanAgent.proto",
}

80
vendor/github.com/ExpediaDotCom/haystack-client-go/span_context.go generated vendored Normal file
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/*
* Copyright 2018 Expedia Group.
*
* 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 haystack
import (
"fmt"
)
/*SpanContext implements opentracing.spanContext*/
type SpanContext struct {
// traceID represents globally unique ID of the trace.
TraceID string
// spanID represents span ID that must be unique within its trace
SpanID string
// parentID refers to the ID of the parent span.
// Should be empty if the current span is a root span.
ParentID string
//Context baggage. The is a snapshot in time.
Baggage map[string]string
// set to true if extracted using a extractor in tracer
IsExtractedContext bool
}
// IsValid indicates whether this context actually represents a valid trace.
func (context SpanContext) IsValid() bool {
return context.TraceID != "" && context.SpanID != ""
}
/*ForeachBaggageItem implements opentracing.spancontext*/
func (context SpanContext) ForeachBaggageItem(handler func(k, v string) bool) {
for k, v := range context.Baggage {
if !handler(k, v) {
break
}
}
}
// WithBaggageItem creates a new context with an extra baggage item.
func (context SpanContext) WithBaggageItem(key, value string) *SpanContext {
var newBaggage map[string]string
if context.Baggage == nil {
newBaggage = map[string]string{key: value}
} else {
newBaggage = make(map[string]string, len(context.Baggage)+1)
for k, v := range context.Baggage {
newBaggage[k] = v
}
newBaggage[key] = value
}
return &SpanContext{
TraceID: context.TraceID,
SpanID: context.SpanID,
ParentID: context.ParentID,
Baggage: newBaggage,
}
}
/*ToString represents the string*/
func (context SpanContext) ToString() string {
return fmt.Sprintf("%+v", context)
}

214
vendor/github.com/ExpediaDotCom/haystack-client-go/tracer.go generated vendored Normal file
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@ -0,0 +1,214 @@
/*
* Copyright 2018 Expedia Group.
*
* 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 haystack
import (
"io"
"time"
"github.com/google/uuid"
"github.com/opentracing/opentracing-go"
"github.com/opentracing/opentracing-go/ext"
)
/*Tracer implements the opentracing.tracer*/
type Tracer struct {
serviceName string
logger Logger
dispatcher Dispatcher
commonTags []opentracing.Tag
timeNow func() time.Time
idGenerator func() string
propagators map[interface{}]Propagator
useDualSpanMode bool
}
/*NewTracer creates a new tracer*/
func NewTracer(
serviceName string,
dispatcher Dispatcher,
options ...TracerOption,
) (opentracing.Tracer, io.Closer) {
tracer := &Tracer{
serviceName: serviceName,
dispatcher: dispatcher,
useDualSpanMode: false,
}
tracer.propagators = make(map[interface{}]Propagator)
tracer.propagators[opentracing.TextMap] = NewDefaultTextMapPropagator()
tracer.propagators[opentracing.HTTPHeaders] = NewTextMapPropagator(PropagatorOpts{}, URLCodex{})
for _, option := range options {
option(tracer)
}
if tracer.timeNow == nil {
tracer.timeNow = time.Now
}
if tracer.logger == nil {
tracer.logger = NullLogger{}
}
if tracer.idGenerator == nil {
tracer.idGenerator = func() string {
_uuid, err := uuid.NewUUID()
if err != nil {
panic(err)
}
return _uuid.String()
}
}
dispatcher.SetLogger(tracer.logger)
return tracer, tracer
}
/*StartSpan starts a new span*/
func (tracer *Tracer) StartSpan(
operationName string,
options ...opentracing.StartSpanOption,
) opentracing.Span {
sso := opentracing.StartSpanOptions{}
for _, o := range options {
o.Apply(&sso)
}
if sso.StartTime.IsZero() {
sso.StartTime = tracer.timeNow()
}
var followsFromIsParent = false
var parent *SpanContext
for _, ref := range sso.References {
if ref.Type == opentracing.ChildOfRef {
if parent == nil || followsFromIsParent {
parent = ref.ReferencedContext.(*SpanContext)
}
} else if ref.Type == opentracing.FollowsFromRef {
if parent == nil {
parent = ref.ReferencedContext.(*SpanContext)
followsFromIsParent = true
}
}
}
spanContext := tracer.createSpanContext(parent, tracer.isServerSpan(sso.Tags))
span := &_Span{
tracer: tracer,
context: spanContext,
operationName: operationName,
startTime: sso.StartTime,
duration: 0,
}
for _, tag := range tracer.Tags() {
span.SetTag(tag.Key, tag.Value)
}
for k, v := range sso.Tags {
span.SetTag(k, v)
}
return span
}
func (tracer *Tracer) isServerSpan(spanTags map[string]interface{}) bool {
if spanKind, ok := spanTags[string(ext.SpanKind)]; ok && spanKind == "server" {
return true
}
return false
}
func (tracer *Tracer) createSpanContext(parent *SpanContext, isServerSpan bool) *SpanContext {
if parent == nil || !parent.IsValid() {
return &SpanContext{
TraceID: tracer.idGenerator(),
SpanID: tracer.idGenerator(),
}
}
// This is a check to see if the tracer is configured to support single
// single span type (Zipkin style shared span id) or
// dual span type (client and server having their own span ids ).
// a. If tracer is not of dualSpanType and if it is a server span then we
// just return the parent context with the same shared span ids
// b. If tracer is not of dualSpanType and if the parent context is an extracted one from the wire
// then we assume this is the first span in the server and so just return the parent context
// with the same shared span ids
if !tracer.useDualSpanMode && (isServerSpan || parent.IsExtractedContext) {
return &SpanContext{
TraceID: parent.TraceID,
SpanID: parent.SpanID,
ParentID: parent.ParentID,
Baggage: parent.Baggage,
IsExtractedContext: false,
}
}
return &SpanContext{
TraceID: parent.TraceID,
SpanID: tracer.idGenerator(),
ParentID: parent.SpanID,
Baggage: parent.Baggage,
IsExtractedContext: false,
}
}
/*Inject implements Inject() method of opentracing.Tracer*/
func (tracer *Tracer) Inject(ctx opentracing.SpanContext, format interface{}, carrier interface{}) error {
c, ok := ctx.(*SpanContext)
if !ok {
return opentracing.ErrInvalidSpanContext
}
if injector, ok := tracer.propagators[format]; ok {
return injector.Inject(c, carrier)
}
return opentracing.ErrUnsupportedFormat
}
/*Extract implements Extract() method of opentracing.Tracer*/
func (tracer *Tracer) Extract(
format interface{},
carrier interface{},
) (opentracing.SpanContext, error) {
if extractor, ok := tracer.propagators[format]; ok {
return extractor.Extract(carrier)
}
return nil, opentracing.ErrUnsupportedFormat
}
/*Tags return all common tags */
func (tracer *Tracer) Tags() []opentracing.Tag {
return tracer.commonTags
}
/*DispatchSpan dispatches the span to a dispatcher*/
func (tracer *Tracer) DispatchSpan(span *_Span) {
if tracer.dispatcher != nil {
tracer.dispatcher.Dispatch(span)
}
}
/*Close closes the tracer*/
func (tracer *Tracer) Close() error {
if tracer.dispatcher != nil {
tracer.dispatcher.Close()
}
return nil
}

59
vendor/github.com/ExpediaDotCom/haystack-client-go/tracer_options.go generated vendored Normal file
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/*
* Copyright 2018 Expedia Group.
*
* 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 haystack
import (
"github.com/opentracing/opentracing-go"
)
// TracerOption is a function that sets some option on the tracer
type TracerOption func(tracer *Tracer)
/*TracerOptions a list of tracer options*/
type TracerOptions struct{}
/*TracerOptionsFactory factory to create multiple tracer options*/
var TracerOptionsFactory TracerOptions
/*Propagator registers a new Propagator*/
func (t TracerOptions) Propagator(format interface{}, propagator Propagator) TracerOption {
return func(tracer *Tracer) {
tracer.propagators[format] = propagator
}
}
/*Tag adds a common tag in every span*/
func (t TracerOptions) Tag(key string, value interface{}) TracerOption {
return func(tracer *Tracer) {
tracer.commonTags = append(tracer.commonTags, opentracing.Tag{Key: key, Value: value})
}
}
/*Logger set the logger type*/
func (t TracerOptions) Logger(logger Logger) TracerOption {
return func(tracer *Tracer) {
tracer.logger = logger
}
}
/*UseDualSpanMode sets the tracer in dual span mode*/
func (t TracerOptions) UseDualSpanMode() TracerOption {
return func(tracer *Tracer) {
tracer.useDualSpanMode = true
}
}