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span.ts
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span.ts
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import { Span as SpanInterface, SpanContext, Transaction } from '@sentry/types';
import { dropUndefinedKeys, logger, timestampWithMs, uuid4 } from '@sentry/utils';
import { SpanStatus } from './spanstatus';
import { SpanRecorder } from './transaction';
export const TRACEPARENT_REGEXP = new RegExp(
'^[ \\t]*' + // whitespace
'([0-9a-f]{32})?' + // trace_id
'-?([0-9a-f]{16})?' + // span_id
'-?([01])?' + // sampled
'[ \\t]*$', // whitespace
);
/**
* Span contains all data about a span
*/
export class Span implements SpanInterface, SpanContext {
/**
* @inheritDoc
*/
public traceId: string = uuid4();
/**
* @inheritDoc
*/
public spanId: string = uuid4().substring(16);
/**
* @inheritDoc
*/
public parentSpanId?: string;
/**
* Internal keeper of the status
*/
public status?: SpanStatus | string;
/**
* @inheritDoc
*/
public sampled?: boolean;
/**
* Timestamp in seconds when the span was created.
*/
public startTimestamp: number = timestampWithMs();
/**
* Timestamp in seconds when the span ended.
*/
public endTimestamp?: number;
/**
* @inheritDoc
*/
public op?: string;
/**
* @inheritDoc
*/
public description?: string;
/**
* @inheritDoc
*/
public tags: { [key: string]: string } = {};
/**
* @inheritDoc
*/
public data: { [key: string]: any } = {};
/**
* List of spans that were finalized
*/
public spanRecorder?: SpanRecorder;
/**
* You should never call the constructor manually, always use `hub.startSpan()`.
* @internal
* @hideconstructor
* @hidden
*/
public constructor(spanContext?: SpanContext) {
if (!spanContext) {
return this;
}
if (spanContext.traceId) {
this.traceId = spanContext.traceId;
}
if (spanContext.spanId) {
this.spanId = spanContext.spanId;
}
if (spanContext.parentSpanId) {
this.parentSpanId = spanContext.parentSpanId;
}
// We want to include booleans as well here
if ('sampled' in spanContext) {
this.sampled = spanContext.sampled;
}
if (spanContext.op) {
this.op = spanContext.op;
}
if (spanContext.description) {
this.description = spanContext.description;
}
if (spanContext.data) {
this.data = spanContext.data;
}
if (spanContext.tags) {
this.tags = spanContext.tags;
}
if (spanContext.status) {
this.status = spanContext.status;
}
if (spanContext.startTimestamp) {
this.startTimestamp = spanContext.startTimestamp;
}
if (spanContext.endTimestamp) {
this.endTimestamp = spanContext.endTimestamp;
}
}
/**
* @inheritDoc
* @deprecated
*/
public child(
spanContext?: Pick<SpanContext, Exclude<keyof SpanContext, 'spanId' | 'sampled' | 'traceId' | 'parentSpanId'>>,
): Span {
return this.startChild(spanContext);
}
/**
* @inheritDoc
*/
public startChild(
spanContext?: Pick<SpanContext, Exclude<keyof SpanContext, 'spanId' | 'sampled' | 'traceId' | 'parentSpanId'>>,
): Span {
const span = new Span({
...spanContext,
parentSpanId: this.spanId,
sampled: this.sampled,
traceId: this.traceId,
});
span.spanRecorder = this.spanRecorder;
if (span.spanRecorder) {
span.spanRecorder.add(span);
}
return span;
}
/**
* @inheritDoc
*/
public getTransaction(callback: (transaction: Transaction) => void): void {
const recorder = this.spanRecorder;
if (!recorder || !recorder.spans[0]) {
logger.warn('This Span has no reference to a Transaction. Returning an instance to itself.');
logger.warn('It means that the Transaction has been sampled or the Span did not originate from a Transaction.');
return;
}
callback(recorder.spans[0] as Transaction);
}
/**
* Continues a trace from a string (usually the header).
* @param traceparent Traceparent string
*/
public static fromTraceparent(
traceparent: string,
spanContext?: Pick<SpanContext, Exclude<keyof SpanContext, 'spanId' | 'sampled' | 'traceId' | 'parentSpanId'>>,
): Span | undefined {
const matches = traceparent.match(TRACEPARENT_REGEXP);
if (matches) {
let sampled: boolean | undefined;
if (matches[3] === '1') {
sampled = true;
} else if (matches[3] === '0') {
sampled = false;
}
return new Span({
...spanContext,
parentSpanId: matches[2],
sampled,
traceId: matches[1],
});
}
return undefined;
}
/**
* @inheritDoc
*/
public setTag(key: string, value: string): this {
this.tags = { ...this.tags, [key]: value };
return this;
}
/**
* @inheritDoc
*/
public setData(key: string, value: any): this {
this.data = { ...this.data, [key]: value };
return this;
}
/**
* @inheritDoc
*/
public setStatus(value: SpanStatus): this {
this.status = value;
return this;
}
/**
* @inheritDoc
*/
public setHttpStatus(httpStatus: number): this {
this.setTag('http.status_code', String(httpStatus));
const spanStatus = SpanStatus.fromHttpCode(httpStatus);
if (spanStatus !== SpanStatus.UnknownError) {
this.setStatus(spanStatus);
}
return this;
}
/**
* @inheritDoc
*/
public isSuccess(): boolean {
return this.status === SpanStatus.Ok;
}
/**
* @inheritDoc
*/
public finish(endTimestamp?: number): void {
this.endTimestamp = typeof endTimestamp === 'number' ? endTimestamp : timestampWithMs();
}
/**
* @inheritDoc
*/
public toTraceparent(): string {
let sampledString = '';
if (this.sampled !== undefined) {
sampledString = this.sampled ? '-1' : '-0';
}
return `${this.traceId}-${this.spanId}${sampledString}`;
}
/**
* @inheritDoc
*/
public getTraceContext(): {
data?: { [key: string]: any };
description?: string;
op?: string;
parent_span_id?: string;
span_id: string;
status?: string;
tags?: { [key: string]: string };
trace_id: string;
} {
return dropUndefinedKeys({
data: Object.keys(this.data).length > 0 ? this.data : undefined,
description: this.description,
op: this.op,
parent_span_id: this.parentSpanId,
span_id: this.spanId,
status: this.status,
tags: Object.keys(this.tags).length > 0 ? this.tags : undefined,
trace_id: this.traceId,
});
}
/**
* @inheritDoc
*/
public toJSON(): {
data?: { [key: string]: any };
description?: string;
op?: string;
parent_span_id?: string;
sampled?: boolean;
span_id: string;
start_timestamp: number;
tags?: { [key: string]: string };
timestamp?: number;
trace_id: string;
} {
return dropUndefinedKeys({
data: Object.keys(this.data).length > 0 ? this.data : undefined,
description: this.description,
op: this.op,
parent_span_id: this.parentSpanId,
span_id: this.spanId,
start_timestamp: this.startTimestamp,
status: this.status,
tags: Object.keys(this.tags).length > 0 ? this.tags : undefined,
timestamp: this.endTimestamp,
trace_id: this.traceId,
});
}
}