tracing

package
Version: v1.0.3 Latest Latest
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Published: Jul 6, 2017 License: Apache-2.0 Imports: 21 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, name string,
) (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 IngestRemoteSpans

func IngestRemoteSpans(ctx context.Context, remoteSpans [][]byte) error

IngestRemoteSpans takes a bunch of encoded spans and passes them to a Recorder in the Context.

func NewTracer

func NewTracer() opentracing.Tracer

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

func SetEnabled added in v1.0.2

func SetEnabled(enabled bool) func()

SetEnabled enables or disables tracing. Returns a function that restores the previous setting.

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 RecordedTrace

type RecordedTrace struct {
	syncutil.Mutex
	// contains filtered or unexported fields
}

RecordedTrace is associated with a span and records the respective span and all child spans. It is created, together with a request-specific tracer, by NewRecordingTracer(). The addSpan() method is used as a tracer recorder.

func JoinRemoteTrace

func JoinRemoteTrace(
	ctx context.Context, tr opentracing.Tracer, carrier *SpanContextCarrier, opName string,
) (context.Context, *RecordedTrace, error)

JoinRemoteTrace takes a Context and returns a derived one with a Span that's a child of a remote span carried over by carrier. The caller is responsible for Finish()ing this span. If the trace is a "snowball trace", then the span will be created by a per-request TeeTracer, which both records the trace and also pipes everything to tr.

tr must be a tracer able to extract the SpanContext from carrier.

It returns the derived context and a RecordedTrace. This will be nil if the remote trace is not a "snowball trace"; otherwise, it will be a handle on the recording of the trace rooted by the span created here. When this span is closed, the caller should serialize the RecordedTrace and send it over the wire to the remote party.

func NewRecordingTracer

func NewRecordingTracer() (opentracing.Tracer, *RecordedTrace)

NewRecordingTracer creates a request-specific tracer that will record its trace.

func NewTracerAndSpanFor7881

func NewTracerAndSpanFor7881(ctx context.Context) (context.Context, *RecordedTrace, error)

NewTracerAndSpanFor7881 creates a new tracer and a root span. The tracer is to be used for tracking down #7881. Note that this is not a "snowball" trace; otherwise this function mirrors StartSnowballTrace().

func StartSnowballTrace

func StartSnowballTrace(
	ctx context.Context, opName string,
) (context.Context, *RecordedTrace, error)

StartSnowballTrace takes in a context and returns a derived one with a "snowball span" in it. The caller takes ownership of this span from the returned context and is in charge of Finish()ing it. A recorder that will receive both local and remote child spans is also returned.

If there's already a span in the passed-in context, then a per-request TeeTracer will be used for creating this new snowball span; the existing span thus continues to be in effect. Note that ownership of the existing span is not transferred in any way - it will not be Finish()ed when the TeeSpan is Finish()ed.

func (*RecordedTrace) AddDummySpan

func (tr *RecordedTrace) AddDummySpan(rs basictracer.RawSpan)

AddDummySpan is an external version of addSpan. TODO(andrei): get rid of this when explainTraceNode goes away.

func (*RecordedTrace) ClearSpans

func (tr *RecordedTrace) ClearSpans()

ClearSpans clears the spans accumulated so far. TODO(andrei): remove this once the we get rid of explainTraceNode and its weird use case for this.

func (*RecordedTrace) Done

func (tr *RecordedTrace) Done()

Done marks the recorder such that future spans are rejected.

func (*RecordedTrace) GetSpans

func (tr *RecordedTrace) GetSpans() []basictracer.RawSpan

GetSpans returns all accumulated spans.

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 ...otlog.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 NewTeeTracer

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

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 (*TeeTracer) CreateSpanFrom

func (t *TeeTracer) CreateSpanFrom(spans ...spanWithOpt) *TeeSpan

CreateSpanFrom creates a TeeSpan that will contains the passed-in spans. Depending on span.owned, the TeeSpan takes ownership of some of the child spans.

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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