eve/dist/src/tracing/local-trace-span-processor.js

Filesystem-first framework for durable backend AI agents that run anywhere.

import{mkdir}from"node:fs/promises";import{createLogger,formatError}from"#internal/logging.js";import{join}from"node:path";import{atomicWriteFile}from"#shared/atomic-write-file.js";import{JsonTraceSerializer}from"#compiled/@opentelemetry/otlp-transformer/index.js";const log=createLogger(`harness.local-trace-span-processor`);function resolveLocalTraceStoreDirectory(e){return join(e,`.eve`,`traces`)}function resolveLocalTraceSchemaDirectory(e){return join(resolveLocalTraceStoreDirectory(e),`v1`)}function resolveLocalTraceSegmentsDirectory(e,t){return join(resolveLocalTraceSchemaDirectory(e),t,`segments`)}var LocalTraceSpanProcessor=class{#e;#t=Promise.resolve();#n=!1;constructor(e){this.#e=e}forceFlush(){return this.#t}onStart(){}onEnd(e){if(!isReadableSpan(e))return;let{spanId:t,traceId:n}=e.spanContext();if(!isHexId(n,32)||!isHexId(t,16))return;let r=JsonTraceSerializer.serializeRequest([e]);r!==void 0&&(this.#t=this.#t.then(async()=>{let e=resolveLocalTraceSegmentsDirectory(this.#e,n);await mkdir(e,{recursive:!0}),await atomicWriteFile(join(e,`${t}.otlp.json`),r)}).catch(e=>{this.#n||(this.#n=!0,log.warn(`local trace persistence failed`,{error:formatError(e)}))}))}shutdown(){return this.forceFlush()}};function isReadableSpan(e){return typeof e==`object`&&!!e&&`attributes`in e&&`spanContext`in e&&typeof e.spanContext==`function`}function isHexId(e,t){return e.length===t&&/^[0-9a-f]+$/u.test(e)}export{LocalTraceSpanProcessor,resolveLocalTraceSchemaDirectory,resolveLocalTraceSegmentsDirectory};