@opentelemetry/tracing

@opentelemetry/tracing

Version 0.24.0
Published 2 years ago
230 kB
4 dependencies
Apache-2.0 license

Install

npm i @opentelemetry/tracing

yarn add @opentelemetry/tracing

pnpm add @opentelemetry/tracing

Overview

OpenTelemetry Tracing

Index

Enums

ForceFlushState

Type Aliases

EXPORTER_FACTORY
PROPAGATOR_FACTORY

Classes

class BasicTracerProvider

class BasicTracerProvider implements TracerProvider {}

This class represents a basic tracer provider which platform libraries can extend

constructor

constructor(config?: TracerConfig);

property activeSpanProcessor

activeSpanProcessor: SpanProcessor;

property resource

readonly resource: Resource;

method addSpanProcessor

addSpanProcessor: (spanProcessor: SpanProcessor) => void;

Adds a new SpanProcessor to this tracer.
Parameter spanProcessor
the new SpanProcessor to be added.

method forceFlush

forceFlush: () => Promise<void>;

method getActiveSpanProcessor

getActiveSpanProcessor: () => SpanProcessor;

method getTracer

getTracer: (name: string, version?: string) => Tracer;

method register

register: (config?: SDKRegistrationConfig) => void;

Register this TracerProvider for use with the OpenTelemetry API. Undefined values may be replaced with defaults, and null values will be skipped.
Parameter config
Configuration object for SDK registration

method shutdown

shutdown: () => Promise<void>;

class BatchSpanProcessor

class BatchSpanProcessor extends BatchSpanProcessorBase<BufferConfig> {}

method onShutdown

protected onShutdown: () => void;

class ConsoleSpanExporter

class ConsoleSpanExporter implements SpanExporter {}

This is implementation of SpanExporter that prints spans to the console. This class can be used for diagnostic purposes.

method export

export: (
    spans: ReadableSpan[],
    resultCallback: (result: ExportResult) => void
) => void;

Export spans.
Parameter spans
Parameter resultCallback

method shutdown

shutdown: () => Promise<void>;

Shutdown the exporter.

class InMemorySpanExporter

class InMemorySpanExporter implements SpanExporter {}

This class can be used for testing purposes. It stores the exported spans in a list in memory that can be retrieved using the getFinishedSpans() method.

method export

export: (
    spans: ReadableSpan[],
    resultCallback: (result: ExportResult) => void
) => void;

method getFinishedSpans

getFinishedSpans: () => ReadableSpan[];

method reset

reset: () => void;

method shutdown

shutdown: () => Promise<void>;

class NoopSpanProcessor

class NoopSpanProcessor implements SpanProcessor {}

No-op implementation of SpanProcessor

method forceFlush

forceFlush: () => Promise<void>;

method onEnd

onEnd: (_span: ReadableSpan) => void;

method onStart

onStart: (_span: Span, _context: Context) => void;

method shutdown

shutdown: () => Promise<void>;

class SimpleSpanProcessor

class SimpleSpanProcessor implements SpanProcessor {}

An implementation of the SpanProcessor that converts the Span to ReadableSpan and passes it to the configured exporter.
Only spans that are sampled are converted.

constructor

constructor(_exporter: SpanExporter);

method forceFlush

forceFlush: () => Promise<void>;

method onEnd

onEnd: (span: ReadableSpan) => void;

method onStart

onStart: (_span: Span) => void;

method shutdown

shutdown: () => Promise<void>;

class Span

class Span implements api.Span, ReadableSpan {}

This class represents a span.

constructor

constructor(
    parentTracer: Tracer,
    context: Context,
    spanName: string,
    spanContext: api.SpanContext,
    kind: api.SpanKind,
    parentSpanId?: string,
    links?: api.Link[],
    startTime?: api.TimeInput
);

Constructs a new Span instance.

property attributes

readonly attributes: api.SpanAttributes;

property duration

readonly duration: api.HrTime;

property ended

readonly ended: boolean;

property endTime

endTime: api.HrTime;

property events

readonly events: TimedEvent[];

property instrumentationLibrary

readonly instrumentationLibrary: InstrumentationLibrary;

property kind

readonly kind: api.SpanKind;

property links

readonly links: api.Link[];

property name

name: string;

property parentSpanId

readonly parentSpanId?: string;

property resource

readonly resource: Resource;

property startTime

readonly startTime: api.HrTime;

property status

status: api.SpanStatus;

method addEvent

addEvent: (
    name: string,
    attributesOrStartTime?: api.SpanAttributes | api.TimeInput,
    startTime?: api.TimeInput
) => this;

Parameter name
Span Name
Parameter attributesOrStartTime
Span attributes or start time if type is and 3rd param is undefined
Parameter startTime
Specified start time for the event

method end

end: (endTime?: api.TimeInput) => void;

method isRecording

isRecording: () => boolean;

method recordException

recordException: (exception: api.Exception, time?: api.TimeInput) => void;

method setAttribute

setAttribute: (key: string, value?: SpanAttributeValue) => this;

method setAttributes

setAttributes: (attributes: api.SpanAttributes) => this;

method setStatus

setStatus: (status: api.SpanStatus) => this;

method spanContext

spanContext: () => api.SpanContext;

method updateName

updateName: (name: string) => this;

class Tracer

class Tracer implements api.Tracer {}

This class represents a basic tracer.

constructor

constructor(
    instrumentationLibrary: InstrumentationLibrary,
    config: TracerConfig,
    _tracerProvider: BasicTracerProvider
);

Constructs a new Tracer instance.

property instrumentationLibrary

readonly instrumentationLibrary: InstrumentationLibrary;

property resource

readonly resource: Resource;

method getActiveSpanProcessor

getActiveSpanProcessor: () => import('./SpanProcessor').SpanProcessor;

method getSpanLimits

getSpanLimits: () => SpanLimits;

Returns the active SpanLimits.

method startActiveSpan

startActiveSpan: {
    <F extends (span: api.Span) => ReturnType<F>>(
        name: string,
        fn: F
    ): ReturnType<F>;
    <F extends (span: api.Span) => ReturnType<F>>(
        name: string,
        opts: api.SpanOptions,
        fn: F
    ): ReturnType<F>;
    <F extends (span: api.Span) => ReturnType<F>>(
        name: string,
        opts: api.SpanOptions,
        ctx: api.Context,
        fn: F
    ): ReturnType<F>;
};

Starts a new Span and calls the given function passing it the created span as first argument. Additionally the new span gets set in context and this context is activated for the duration of the function call.
Parameter name
The name of the span
Parameter options
SpanOptions used for span creation
Parameter context
Context to use to extract parent
Parameter fn
function called in the context of the span and receives the newly created span as an argument
Returns
return value of fn
Example 1
const something = tracer.startActiveSpan('op', span => { try { do some work span.setStatus({code: SpanStatusCode.OK}); return something; } catch (err) { span.setStatus({ code: SpanStatusCode.ERROR, message: err.message, }); throw err; } finally { span.end(); } });
Example 2
const span = tracer.startActiveSpan('op', span => { try { do some work return span; } catch (err) { span.setStatus({ code: SpanStatusCode.ERROR, message: err.message, }); throw err; } }); do some more work span.end();

method startSpan

startSpan: (
    name: string,
    options?: api.SpanOptions,
    context?: api.Context
) => api.Span;

Starts a new Span or returns the default NoopSpan based on the sampling decision.

Interfaces

interface BatchSpanProcessorBrowserConfig

interface BatchSpanProcessorBrowserConfig extends BufferConfig {}

Interface configuration for BatchSpanProcessor on browser

property disableAutoFlushOnDocumentHide

disableAutoFlushOnDocumentHide?: boolean;

Disable flush when a user navigates to a new page, closes the tab or the browser, or, on mobile, switches to a different app. Auto flush is enabled by default.

interface BufferConfig

interface BufferConfig {}

Interface configuration for a buffer.

property exportTimeoutMillis

exportTimeoutMillis?: number;

How long the export can run before it is cancelled. The default value is 30000ms

property maxExportBatchSize

maxExportBatchSize?: number;

The maximum batch size of every export. It must be smaller or equal to maxQueueSize. The default value is 512.

property maxQueueSize

maxQueueSize?: number;

The maximum queue size. After the size is reached spans are dropped. The default value is 2048.

property scheduledDelayMillis

scheduledDelayMillis?: number;

The delay interval in milliseconds between two consecutive exports. The default value is 5000ms.

interface ReadableSpan

interface ReadableSpan {}

property attributes

readonly attributes: SpanAttributes;

property duration

readonly duration: HrTime;

property ended

readonly ended: boolean;

property endTime

readonly endTime: HrTime;

property events

readonly events: TimedEvent[];

property instrumentationLibrary

readonly instrumentationLibrary: InstrumentationLibrary;

property kind

readonly kind: SpanKind;

property links

readonly links: Link[];

property name

readonly name: string;

property parentSpanId

readonly parentSpanId?: string;

property resource

readonly resource: Resource;

property spanContext

readonly spanContext: () => SpanContext;

property startTime

readonly startTime: HrTime;

property status

readonly status: SpanStatus;

interface SDKRegistrationConfig

interface SDKRegistrationConfig {}

Configuration options for registering the API with the SDK. Undefined values may be substituted for defaults, and null values will not be registered.

property contextManager

contextManager?: ContextManager | null;

Context manager to register as the global context manager

property propagator

propagator?: TextMapPropagator | null;

Propagator to register as the global propagator

interface SpanExporter

interface SpanExporter {}

An interface that allows different tracing services to export recorded data for sampled spans in their own format.
To export data this MUST be register to the Tracer SDK using a optional config.

method export

export: (
    spans: ReadableSpan[],
    resultCallback: (result: ExportResult) => void
) => void;

Called to export sampled ReadableSpans.
Parameter spans
the list of sampled Spans to be exported.

method shutdown

shutdown: () => Promise<void>;

Stops the exporter.

interface SpanLimits

interface SpanLimits {}

Global configuration of trace service

property attributeCountLimit

attributeCountLimit?: number;

attributeCountLimit is number of attributes per span

property eventCountLimit

eventCountLimit?: number;

eventCountLimit is number of message events per span

property linkCountLimit

linkCountLimit?: number;

linkCountLimit is number of links per span

interface SpanProcessor

interface SpanProcessor {}

SpanProcessor is the interface Tracer SDK uses to allow synchronous hooks for when a Span is started or when a Span is ended.

method forceFlush

forceFlush: () => Promise<void>;

Forces to export all finished spans

method onEnd

onEnd: (span: ReadableSpan) => void;

Called when a ReadableSpan is ended, if the span.isRecording() returns true.
Parameter span
the Span that just ended.

method onStart

onStart: (span: Span, parentContext: Context) => void;

Called when a Span is started, if the span.isRecording() returns true.
Parameter span
the Span that just started.

method shutdown

shutdown: () => Promise<void>;

Shuts down the processor. Called when SDK is shut down. This is an opportunity for processor to do any cleanup required.

interface TimedEvent

interface TimedEvent {}

Represents a timed event. A timed event is an event with a timestamp.

property attributes

attributes?: SpanAttributes;

The attributes of the event.

property name

name: string;

The name of the event.

property time

time: HrTime;

interface TracerConfig

interface TracerConfig {}

TracerConfig provides an interface for configuring a Basic Tracer.

property forceFlushTimeoutMillis

forceFlushTimeoutMillis?: number;

How long the forceFlush can run before it is cancelled. The default value is 30000ms

property idGenerator

idGenerator?: IdGenerator;

Generator of trace and span IDs The default idGenerator generates random ids

property resource

resource?: Resource;

Resource associated with trace telemetry

property sampler

sampler?: Sampler;

Sampler determines if a span should be recorded or should be a NoopSpan.

property spanLimits

spanLimits?: SpanLimits;

Span Limits

Enums

enum ForceFlushState

enum ForceFlushState {
    'resolved' = 0,
    'timeout' = 1,
    'error' = 2,
    'unresolved' = 3,
}

member 'error'

'error' = 2

member 'resolved'

'resolved' = 0

member 'timeout'

'timeout' = 1

member 'unresolved'

'unresolved' = 3

Type Aliases

type EXPORTER_FACTORY

type EXPORTER_FACTORY = () => SpanExporter;

type PROPAGATOR_FACTORY

type PROPAGATOR_FACTORY = () => TextMapPropagator;

Package Files (14)

Peer Dependencies (1)

@opentelemetry/api

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@opentelemetry/tracing

Install

Overview

Index

Classes

Interfaces

Enums

Type Aliases

Classes

class BasicTracerProvider

constructor

property activeSpanProcessor

property resource

method addSpanProcessor

Parameter spanProcessor

method forceFlush

method getActiveSpanProcessor

method getTracer

method register

Parameter config

method shutdown

class BatchSpanProcessor

method onShutdown

class ConsoleSpanExporter

method export

Parameter spans

Parameter resultCallback

method shutdown

class InMemorySpanExporter

method export

method getFinishedSpans

method reset

method shutdown

class NoopSpanProcessor

method forceFlush

method onEnd

method onStart

method shutdown

class SimpleSpanProcessor

constructor

method forceFlush

method onEnd

method onStart

method shutdown

class Span

constructor

property attributes

property duration

property ended

property endTime

property events

property instrumentationLibrary

property kind

property links

property name

property parentSpanId

property resource

property startTime

property status

method addEvent

Parameter name

Parameter attributesOrStartTime

Parameter startTime

method end

method isRecording

method recordException

method setAttribute

method setAttributes

method setStatus

method spanContext

method updateName

class Tracer

constructor

property instrumentationLibrary

property resource

method getActiveSpanProcessor

method getSpanLimits

method startActiveSpan

Parameter name

Parameter options