eve/dist/src/compiler/channel-route-plan.js

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

import{createChannelRouteShadowedDiagnostic}from"#compiler/diagnostics.js";import{HOST_HTTP_INVENTORY}from"#framework/host-inventory.js";function createCompiledChannelRoutePlan(e){let t=[],n=[];for(let r of e.channels){let i=HOST_HTTP_INVENTORY.find(e=>routesOverlap(r,e));if(i!==void 0)throw Error(`compile/reserved-route-collision: ${r.method} ${r.urlPath} overlaps reserved ${i.method} ${i.path}.`);let a=t.find(e=>routesOverlap(r,e));if(a===void 0){t.push(r);continue}if(a.sourceId===r.sourceId)throw Error(`compile/channel-route-duplicate: source "${r.sourceId}" emits ${r.method} ${r.urlPath} more than once.`);let o=e.bindings[r.sourceId],s=e.sources[r.sourceId],c=e.sources[a.sourceId];if(o===void 0||s===void 0||c===void 0)throw Error(`Channel source "${r.sourceId}" has no compiled binding.`);n.push({method:r.method,source:s,urlPath:r.urlPath,winnerSourceId:a.sourceId}),e.diagnostics?.push(createChannelRouteShadowedDiagnostic({loser:s,method:r.method,nodeId:e.nodeId,urlPath:r.urlPath,winner:c}))}let r=derivePreflights(t);return{effective:Object.freeze(t),preflight:Object.freeze(r),shadowed:Object.freeze(n)}}function derivePreflights(e){let t=e.filter(e=>e.method!==`WEBSOCKET`&&e.cors!==void 0);for(let[e,n]of t.entries()){let r=t.slice(e+1).find(e=>routePatternsOverlap(n.urlPath,e.urlPath)&&JSON.stringify(n.cors)!==JSON.stringify(e.cors));if(r!==void 0)throw Error(`compile/channel-cors-conflict: overlapping routes at "${n.urlPath}" and "${r.urlPath}" declare different CORS policies.`)}let n=new Map;for(let e of t){let t=normalizeRoutePattern(e.urlPath),r=n.get(t)??[];r.push(e),n.set(t,r)}let r=[];for(let t of n.values()){let n=t[0],i=JSON.stringify(n.cors);if(t.some(e=>JSON.stringify(e.cors)!==i))throw Error(`compile/channel-cors-conflict: routes at "${n.urlPath}" declare different CORS policies.`);if(e.some(e=>e.method===`OPTIONS`&&routePatternsOverlap(e.urlPath,n.urlPath)))throw Error(`compile/channel-preflight-collision: explicit OPTIONS route overlaps generated preflight at "${n.urlPath}".`);r.push({cors:n.cors,method:`OPTIONS`,sourceIds:[...new Set(t.map(e=>e.sourceId))],urlPath:n.urlPath})}return r}function routesOverlap(e,t){return methodsOverlap(e.method,t.method)&&routePatternsOverlap(e.urlPath,t.path??t.urlPath)}function methodsOverlap(e,t){return e===`ALL`||t===`ALL`||e===t}function routePatternsOverlap(e,t){let n=splitRoute(e),r=splitRoute(t);return n.length===r.length&&n.every((e,t)=>isParameter(e)||isParameter(r[t])||e===r[t])}function normalizeRoutePattern(e){return splitRoute(e).map(e=>isParameter(e)?`:`:e).join(`/`)}function splitRoute(e){return e.replace(/^\/+|\/+$/g,``).split(`/`)}function isParameter(e){return e.startsWith(`:`)||/^\[[^\]]+\]$/.test(e)}export{createCompiledChannelRoutePlan};