91 lines
2.6 KiB
TypeScript
91 lines
2.6 KiB
TypeScript
/*
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* Copyright (C) 2026 Fluxer Contributors
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*
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* This file is part of Fluxer.
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*
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* Fluxer is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Fluxer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
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*/
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import type {Attributes, Span} from '@opentelemetry/api';
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import {SpanStatusCode, trace} from '@opentelemetry/api';
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const DEFAULT_TRACER_NAME = 'fluxer';
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export interface WithSpanOptions {
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attributes?: Attributes;
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tracerName?: string;
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}
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function getErrorMessage(error: unknown): string {
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if (error instanceof Error) {
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return error.message;
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}
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return 'Unknown error';
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}
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export function getTracer(name: string = DEFAULT_TRACER_NAME) {
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return trace.getTracer(name);
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}
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export async function withSpan<T>(
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name: string,
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fn: (span: Span) => Promise<T> | T,
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options?: WithSpanOptions,
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): Promise<T> {
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const tracer = getTracer(options?.tracerName);
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const spanOptions = options?.attributes === undefined ? {} : {attributes: options.attributes};
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return tracer.startActiveSpan(name, spanOptions, async (span) => {
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try {
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const result = await fn(span);
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span.setStatus({code: SpanStatusCode.OK});
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return result;
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} catch (error) {
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span.setStatus({
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code: SpanStatusCode.ERROR,
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message: getErrorMessage(error),
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});
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throw error;
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} finally {
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span.end();
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}
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}) as Promise<T>;
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}
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export function addSpanEvent(name: string, attributes?: Attributes): void {
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const activeSpan = trace.getActiveSpan();
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if (activeSpan !== undefined) {
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activeSpan.addEvent(name, attributes);
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}
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}
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export function setSpanAttributes(attributes: Attributes): void {
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const activeSpan = trace.getActiveSpan();
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if (activeSpan !== undefined) {
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activeSpan.setAttributes(attributes);
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}
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}
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export function getActiveSpan(): Span | undefined {
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return trace.getActiveSpan();
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}
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export function formatTraceparent(span: Span): string | null {
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const spanContext = span.spanContext();
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if (!spanContext.traceId || !spanContext.spanId) {
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return null;
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}
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const traceFlags = spanContext.traceFlags?.toString(16).padStart(2, '0') ?? '00';
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return `00-${spanContext.traceId}-${spanContext.spanId}-${traceFlags}`;
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}
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