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eve

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

github.com/vercel/eve

vercel/eve

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import{normalizeChannelAudience}from"#shared/channel-audience.js";import{hasConversationRelease}from"#tracing/local-traces.js";import{channelAudienceFromContext}from"#tracing/channel-audience-context.js";import{withoutDeclinedContent}from"#tracing/content-attributes.js";import{normalizeSpanExportPolicies}from"#tracing/span-export-policy.js";function contentFilteringProcessor(e,t){let n=normalizeSpanExportPolicies(t);if(n.length===0)return e;let r=e;for(let e of n.toReversed())r=policyFilteringProcessor(r,e);return r}function policyFilteringProcessor(e,t){let n=new WeakMap,r=new WeakSet,i={forceFlush:()=>e.forceFlush(),onEnd:i=>{if(typeof i!=`object`||!i)return;let a=facadeFor(i,t,n);if(r.has(i)||!a.exported){r.delete(i),n.delete(i);return}a.refresh();try{e.onEnd(a.value)}finally{n.delete(i)}},onStart:(i,a)=>{if(typeof i!=`object`||!i)return;let o=facadeFor(i,t,n,channelAudienceFromContext(a));if(!o.exported){r.add(i);return}e.onStart(o.value,a)},shutdown:()=>e.shutdown()};return hasConversationRelease(e)?{...i,releaseConversation:t=>e.releaseConversation(t)}:i}function facadeFor(e,t,n,r){let i=n.get(e);if(i!==void 0)return i;let a=spanExportContext(e,r),o=spanExportDecision(a,t),s={recordInputs:!o.redactInputs,recordOutputs:!o.redactOutputs},c={},l=[],u={},d=Object.create(Reflect.getPrototypeOf(e)),f=new Map,refresh=()=>{refreshAttributes(c,e,s,a,t),refreshEvents(l,e,s),refreshStatus(u,e,s)},p,readOriginal=t=>{let n=Reflect.get(e,t,e);if(typeof n!=`function`||t===`constructor`)return n;let r=f.get(t);if(r!==void 0)return r;let created=(...t)=>{let r=Reflect.apply(n,e,t);return refresh(),r===e?p:r};return f.set(t,created),created};Object.defineProperty(d,"attributes",{configurable:!0,enumerable:!0,value:c}),Object.defineProperty(d,"events",{configurable:!0,enumerable:!0,value:l}),Object.defineProperty(d,"status",{configurable:!0,enumerable:!0,value:u});for(let t of Reflect.ownKeys(e)){if(t===`attributes`||t===`events`||t===`status`)continue;let n=Reflect.getOwnPropertyDescriptor(e,t);Object.defineProperty(d,t,{configurable:!0,enumerable:n?.enumerable??!1,get:()=>readOriginal(t)})}p=new Proxy(d,{get:(e,t,n)=>Object.hasOwn(e,t)?Reflect.get(e,t,n):readOriginal(t)});let m={context:a,exported:o.exported,refresh,value:p};return m.refresh(),n.set(e,m),m}function refreshAttributes(e,t,n,r,i){for(let t of Object.keys(e))delete e[t];let a=t.attributes;if(typeof a!=`object`||!a)return;let o=withoutDeclinedContent(a,n)??a;for(let[t,n]of Object.entries(o)){let a=attributeDecision(i,{key:t,span:r,value:n});typeof a==`object`&&a&&(`emit`in a&&`replace`in a||(`replace`in a&&a.replace===!0?a.value!==void 0&&(e[t]=a.value):`emit`in a&&a.emit===!0&&(e[t]=n)))}}function spanExportContext(e,t=`unknown`){let n=e.attributes,r=typeof n==`object`&&n?n:{},i=[r[`agent.channel.audience`],r[`ai.settings.context.eve.channel.audience`]].filter(e=>e!==void 0).map(normalizeChannelAudience),a=i.length>0&&i.every(e=>e===i[0])?i[0]:i.length>0?`unknown`:t,o=e.spanContext?.(),s=typeof o==`object`&&o?o:{},c=e.name;return{attributes:r,audience:a,name:typeof c==`string`?c:``,spanId:typeof s.spanId==`string`?s.spanId:``,traceId:typeof s.traceId==`string`?s.traceId:``}}function spanExportDecision(e,t){let n;try{n=t.span?.(e)??{emit:!0}}catch{return{exported:!1,redactInputs:!1,redactOutputs:!1}}if(typeof n!=`object`||!n)return{exported:!1,redactInputs:!1,redactOutputs:!1};if(`emit`in n)return`redact`in n?{exported:!1,redactInputs:!1,redactOutputs:!1}:{exported:typeof n.emit==`boolean`&&n.emit,redactInputs:!1,redactOutputs:!1};if(n.redact!==!0)return{exported:!1,redactInputs:!1,redactOutputs:!1};let r=n.inputs===!0,i=n.outputs===!0;return!r&&!i?{exported:!1,redactInputs:!1,redactOutputs:!1}:{exported:!0,redactInputs:r,redactOutputs:i}}function attributeDecision(e,t){if(e?.attribute===void 0)return{emit:!0};try{return e.attribute(t)}catch{return{emit:!1}}}function refreshEvents(e,t,n){e.length=0;let r=t.events;if(Array.isArray(r)){if(n.recordOutputs){e.push(...r);return}for(let t of r){if(typeof t!=`object`||!t)continue;let n=t;n.name!==`exception`&&e.push({...n,attributes:void 0})}}}function refreshStatus(e,t,n){for(let t of Object.keys(e))delete e[t];let r=t.status;if(typeof r!=`object`||!r)return;let i=r;i.code!==void 0&&(e.code=i.code),n.recordOutputs&&i.message!==void 0&&(e.message=i.message)}export{contentFilteringProcessor};