tracing

package
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Published: Dec 20, 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 deprecated

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

Log is part of the opentracing.Span interface.

Deprecated: use LogKV/LogFields.

func (*TeeSpan) LogEvent deprecated

func (ts *TeeSpan) LogEvent(event string)

LogEvent is part of the opentracing.Span interface.

Deprecated: use LogKV/LogFields.

func (*TeeSpan) LogEventWithPayload deprecated

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

LogEventWithPayload is part of the opentracing.Span interface.

Deprecated: use LogKV/LogFields.

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.

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