tracing

package
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 Go to latest Published: Nov 7, 2016 License: Apache-2.0 Imports: 20 Imported by: 0

Documentation

Overview

Package tracing is a generated protocol buffer package.

It is generated from these files: 

cockroach/pkg/util/tracing/span_context_carrier.proto

It has these top-level messages: 

SpanContextCarrier

Index

Constants

View Source 
const Snowball = "sb"

Snowball is set as Baggage on traces which are used for snowball tracing.

Variables

View Source 
var (
	ErrInvalidLengthSpanContextCarrier = fmt.Errorf("proto: negative length found during unmarshaling")
	ErrIntOverflowSpanContextCarrier   = fmt.Errorf("proto: integer overflow")
)

Functions

func AnnotateTrace 

func AnnotateTrace()

AnnotateTrace adds an annotation to the golang executation tracer by calling a no-op cgo function.

func ChildSpan 

func ChildSpan(ctx context.Context, opName string) (context.Context, opentracing.Span)

ChildSpan opens a span as a child of the current span in the context (if there is one).

Returns the new context and the new span (if any). The span should be closed via FinishSpan.

func DecodeRawSpan 

func DecodeRawSpan(enc []byte, dest *basictracer.RawSpan) error

DecodeRawSpan unmarshals into the given RawSpan.

func Disable 

func Disable() func()

Disable is for benchmarking use and causes all future tracers to deal in no-ops. Calling the returned closure undoes this effect. There is no synchronization, so no moving parts are allowed while Disable and the closure are called.

func EncodeRawSpan 

func EncodeRawSpan(rawSpan *basictracer.RawSpan, dest []byte) ([]byte, error)

EncodeRawSpan encodes a raw span into bytes, using the given dest slice as a buffer.

func EnsureContext 

func EnsureContext(ctx context.Context, tracer opentracing.Tracer) (context.Context, func())

EnsureContext checks whether the given context.Context contains a Span. If not, it creates one using the provided Tracer and wraps it in the returned Span. The returned closure must be called after the request has been fully processed.

func FinishSpan 

func FinishSpan(span opentracing.Span)

FinishSpan closes the given span (if not nil). It is a convenience wrapper for span.Finish() which tolerates nil spans.

func ForkCtxSpan 

func ForkCtxSpan(ctx context.Context, opName string) (context.Context, opentracing.Span)

ForkCtxSpan checks if ctx has a Span open; if it does, it creates a new Span that follows from the original Span. This allows the resulting context to be used in an async task that might outlive the original operation.

Returns the new context and the new span (if any). The span should be closed via FinishSpan.

func FormatRawSpans 

func FormatRawSpans(spans []basictracer.RawSpan) string

FormatRawSpans formats the given spans for human consumption, showing the relationship using nesting and times as both relative to the previous event and cumulative.

func JoinOrNew 

func JoinOrNew(
	tr opentracing.Tracer, carrier *SpanContextCarrier, opName string,
) (opentracing.Span, error)

JoinOrNew creates a new Span joined to the provided DelegatingCarrier or creates Span from the given tracer.

func JoinOrNewSnowball 

func JoinOrNewSnowball(
	opName string, carrier *SpanContextCarrier, recorder func(sp basictracer.RawSpan),
) (opentracing.Span, error)

JoinOrNewSnowball returns a Span which records directly via the specified callback. If the given DelegatingCarrier is nil, a new Span is created. otherwise, the created Span is a child.

The recorder should be nil if we don't need to record spans.

TODO(andrei): JoinOrNewSnowball creates a new tracer, which is not kosher. Also this can't use the lightstep tracer.

func NewTeeTracer 

func NewTeeTracer(tracers ...opentracing.Tracer) opentracing.Tracer

NewTeeTracer creates a Tracer that sends events to multiple Tracers.

Note that only the span from the first tracer is used for serialization purposes (Inject/Extract).

func NewTracer 

func NewTracer() opentracing.Tracer

NewTracer creates a Tracer which records to the net/trace endpoint.

func NewTracerAndSpanFor7881 

func NewTracerAndSpanFor7881(
	callback func(sp basictracer.RawSpan),
) (opentracing.Span, opentracing.Tracer, error)

NewTracerAndSpanFor7881 creates a new tracer and a root span. The tracer is to be used for tracking down #7881; it runs a callback for each finished span (and the callback used accumulates the spans in a SQL txn).

Types

type CallbackRecorder 

type CallbackRecorder func(sp basictracer.RawSpan)

A CallbackRecorder immediately invokes itself on received trace spans.

func (CallbackRecorder) RecordSpan 

func (cr CallbackRecorder) RecordSpan(sp basictracer.RawSpan)

RecordSpan implements basictracer.SpanRecorder.

type SpanContextCarrier 

type SpanContextCarrier struct {
	TraceID uint64            `protobuf:"varint,1,opt,name=trace_id,json=traceId,proto3" json:"trace_id,omitempty"`
	SpanID  uint64            `protobuf:"varint,2,opt,name=span_id,json=spanId,proto3" json:"span_id,omitempty"`
	Sampled bool              `protobuf:"varint,3,opt,name=sampled,proto3" json:"sampled,omitempty"`
	Baggage map[string]string `` /* 148-byte string literal not displayed */
}

A SpanContextCarrier message holds metadata of a (potentially ongoing) span of a distributed trace as per the OpenTracing specification. See http://opentracing.io/spec/ for details.

func (*SpanContextCarrier) Descriptor 

func (*SpanContextCarrier) Descriptor() ([]byte, []int)

func (*SpanContextCarrier) GetBaggage 

func (sp *SpanContextCarrier) GetBaggage(fn func(key, value string))

GetBaggage implements basictracer.DelegatingCarrier.

func (*SpanContextCarrier) Marshal 

func (m *SpanContextCarrier) Marshal() (dAtA []byte, err error)

func (*SpanContextCarrier) MarshalTo 

func (m *SpanContextCarrier) MarshalTo(dAtA []byte) (int, error)

func (*SpanContextCarrier) ProtoMessage 

func (*SpanContextCarrier) ProtoMessage()

func (*SpanContextCarrier) Reset 

func (m *SpanContextCarrier) Reset()

func (*SpanContextCarrier) SetBaggageItem 

func (sp *SpanContextCarrier) SetBaggageItem(key, value string)

SetBaggageItem implements basictracer.DelegatingCarrier.

func (*SpanContextCarrier) SetState 

func (sp *SpanContextCarrier) SetState(traceID, spanID uint64, sampled bool)

SetState implements basictracer.DelegatingCarrier.

func (*SpanContextCarrier) Size 

func (m *SpanContextCarrier) Size() (n int)

func (*SpanContextCarrier) State 

func (sp *SpanContextCarrier) State() (traceID, spanID uint64, sampled bool)

State implements basictracer.DelegatingCarrier.

func (*SpanContextCarrier) String 

func (m *SpanContextCarrier) String() string

func (*SpanContextCarrier) Unmarshal 

func (m *SpanContextCarrier) Unmarshal(dAtA []byte) error

type TeeSpan 

type TeeSpan struct {
	// contains filtered or unexported fields
}

TeeSpan is the opentracing.Span implementation used by the TeeTracer.

func (*TeeSpan) BaggageItem 

func (ts *TeeSpan) BaggageItem(restrictedKey string) string

BaggageItem is part of the opentracing.Span interface.

func (*TeeSpan) Context 

func (ts *TeeSpan) Context() opentracing.SpanContext

Context is part of the opentracing.Span interface.

func (*TeeSpan) Finish 

func (ts *TeeSpan) Finish()

Finish is part of the opentracing.Span interface.

func (*TeeSpan) FinishWithOptions 

func (ts *TeeSpan) FinishWithOptions(opts opentracing.FinishOptions)

FinishWithOptions is part of the opentracing.Span interface.

func (*TeeSpan) Log 

func (ts *TeeSpan) Log(data opentracing.LogData)

Log is part of the opentracing.Span interface.

func (*TeeSpan) LogEvent 

func (ts *TeeSpan) LogEvent(event string)

LogEvent is part of the opentracing.Span interface.

func (*TeeSpan) LogEventWithPayload 

func (ts *TeeSpan) LogEventWithPayload(event string, payload interface{})

LogEventWithPayload is part of the opentracing.Span interface.

func (*TeeSpan) LogFields 

func (ts *TeeSpan) LogFields(fields ...log.Field)

LogFields is part of the opentracing.Span interface.

func (*TeeSpan) LogKV 

func (ts *TeeSpan) LogKV(alternatingKeyValues ...interface{})

LogKV is part of the opentracing.Span interface.

func (*TeeSpan) SetBaggageItem 

func (ts *TeeSpan) SetBaggageItem(restrictedKey, value string) opentracing.Span

SetBaggageItem is part of the opentracing.Span interface.

func (*TeeSpan) SetOperationName 

func (ts *TeeSpan) SetOperationName(operationName string) opentracing.Span

SetOperationName is part of the opentracing.Span interface.

func (*TeeSpan) SetTag 

func (ts *TeeSpan) SetTag(key string, value interface{}) opentracing.Span

SetTag is part of the opentracing.Span interface.

func (*TeeSpan) Tracer 

func (ts *TeeSpan) Tracer() opentracing.Tracer

Tracer is part of the opentracing.Span interface.

type TeeSpanContext 

type TeeSpanContext struct {
	// contains filtered or unexported fields
}

TeeSpanContext is an opentracing.SpanContext that keeps track of SpanContexts from multiple tracers.

func (TeeSpanContext) ForeachBaggageItem 

func (tsc TeeSpanContext) ForeachBaggageItem(handler func(k, v string) bool)

ForeachBaggageItem is part of the opentracing.SpanContext interface.

type TeeTracer 

type TeeTracer struct {
	// contains filtered or unexported fields
}

TeeTracer is an opentracing.Tracer that sends events to multiple Tracers.

func (*TeeTracer) Extract 

func (t *TeeTracer) Extract(
	format interface{}, carrier interface{},
) (opentracing.SpanContext, error)

Extract is part of the opentracing.Tracer interface.

func (*TeeTracer) Inject 

func (t *TeeTracer) Inject(
	sc opentracing.SpanContext, format interface{}, carrier interface{},
) error

Inject is part of the opentracing.Tracer interface.

func (*TeeTracer) StartSpan 

func (t *TeeTracer) StartSpan(
	operationName string, opts ...opentracing.StartSpanOption,
) opentracing.Span

StartSpan is part of the opentracing.Tracer interface.

Source Files

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