eve/dist/src/protocol/traceparent.js

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

import{createTraceState}from"#compiled/@opentelemetry/api/index.js";const TRACEPARENT_PATTERN=/^00-([0-9a-f]{32})-([0-9a-f]{16})-([0-9a-f]{2})$/iu,EVE_DISPATCH_PARENT_PATTERN=/^([0-9a-f]{16})$/u;function formatTraceparent(e){if(!(e===void 0||!validId(e.traceId,32)||!validId(e.spanId,16)||!Number.isInteger(e.traceFlags)||e.traceFlags<0||e.traceFlags>255))return`00-${e.traceId.toLowerCase()}-${e.spanId.toLowerCase()}-${e.traceFlags.toString(16).padStart(2,`0`)}`}function parseTraceparent(e){if(e===null)return;let t=TRACEPARENT_PATTERN.exec(e.trim());if(t===null)return;let n=t[1].toLowerCase(),r=t[2].toLowerCase();if(validId(n,32)&&validId(r,16))return{isRemote:!0,spanId:r,traceFlags:Number.parseInt(t[3],16),traceId:n}}function readAgentDispatchTraceContext(e,t){if(e===null||t===void 0)return;let n=createTraceState(e).get(`eve`),r=(n===void 0?null:EVE_DISPATCH_PARENT_PATTERN.exec(n))?.[1];return r===void 0||!validId(r,16)?void 0:{...t,spanId:r}}function writeAgentDispatchTracestate(e,t){let n=createTraceState(e);return t===void 0||formatTraceparent(t)===void 0?boundedTracestate(n.unset(`eve`)):boundedTracestate(n.set(`eve`,t.spanId.toLowerCase()))}function boundedTracestate(e){let t=e,n=t.serialize(),r=n.split(`,`).filter(Boolean);for(;r.length>32||n.length>512;){let e=r.at(-1);if(e===void 0)return;t=t.unset(e.slice(0,e.indexOf(`=`))),n=t.serialize(),r=n.split(`,`).filter(Boolean)}return n||void 0}function validId(e,t){return e.length===t&&/^[0-9a-f]+$/iu.test(e)&&!/^0+$/u.test(e)}export{formatTraceparent,parseTraceparent,readAgentDispatchTraceContext,writeAgentDispatchTracestate};