eve/dist/src/discover/discover-agent.js

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

import{join,resolve}from"node:path";import{classifyAgentRootEntry,normalizeLogicalPath}from"#discover/filesystem.js";import{createDiscoverErrorDiagnostic}from"#discover/diagnostics.js";import{createDiskProjectSource}from"#discover/project-source.js";import{createAgentSourceManifest,createModuleSourceRef}from"#discover/manifest.js";import{DISCOVER_EXTENSION_AGENT_CONFIG_UNSUPPORTED,DISCOVER_EXTENSION_INSTRUMENTATION_UNSUPPORTED,DISCOVER_EXTENSION_MEMORY_UNSUPPORTED,DISCOVER_EXTENSION_MOUNT_AMBIGUOUS,DISCOVER_EXTENSION_MOUNT_MISSING_DECLARATION,DISCOVER_EXTENSION_NESTED_MOUNT_UNSUPPORTED,DISCOVER_EXTENSION_SANDBOX_UNSUPPORTED,locateExtensionMount,mountNamespace}from"#discover/extensions.js";import{DISCOVER_CHANNELS_DIRECTORY_INVALID,DISCOVER_EXTENSIONS_DIRECTORY_INVALID,DISCOVER_HOOKS_DIRECTORY_INVALID,DISCOVER_TOOLS_DIRECTORY_INVALID,createChannelNameDiagnostic,createExtensionNameDiagnostic,createHookNameDiagnostic,createToolNameDiagnostic,createUnsupportedRootDirectoryDiagnostics,discoverFlatModuleSource,discoverInstructionsSource,discoverNamedSourceDirectory,readSortedDirectoryEntries}from"#discover/grammar.js";import{discoverConnectionSources}from"#discover/connections.js";import{discoverSubagents}from"#discover/discover-subagent.js";import{discoverLibSources}from"#discover/lib.js";import{discoverMemorySources}from"#discover/memory.js";import{discoverSandboxSource}from"#discover/sandbox.js";import{discoverScheduleSources}from"#discover/schedules.js";import{discoverSkills}from"#discover/skills.js";import{stripNpmPackageScope}from"#shared/package-name.js";async function discoverAgent(e){let t=e.source??createDiskProjectSource(),n=resolve(e.appRoot),r=resolve(e.agentRoot),i=e.role??`agent`,a=[],o=await tryReadPackageJsonName(t,n),s=await readSortedDirectoryEntries(t,r);a.push(...createUnsupportedRootDirectoryDiagnostics({classifyEntry:classifyAgentRootEntry,createUnsupportedDirectoryMessage(e){return`Ignoring unsupported directory "${e}/" in the agent root.`},rootEntries:s,rootPath:r}));let c=await discoverInstructionsSource({rootEntries:s,rootPath:r,source:t,required:i!==`extension`});a.push(...c.diagnostics);let l=discoverFlatModuleSource({rootEntries:s,rootPath:r,slotName:`agent`});a.push(...l.diagnostics);let u=discoverFlatModuleSource({rootEntries:s,rootPath:r,slotName:`instrumentation`});a.push(...u.diagnostics);let d=await discoverNamedSourceDirectory({directoryName:`channels`,invalidDirectoryCode:DISCOVER_CHANNELS_DIRECTORY_INVALID,invalidDirectoryMessage:`Expected "${join(r,`channels`)}" to be a directory of authored channels.`,recursive:!0,rootEntries:s,rootPath:r,source:t,validateSegment:createChannelNameDiagnostic});a.push(...d.diagnostics);let f=await discoverLibSources({agentRoot:r,rootEntries:s,source:t});a.push(...f.diagnostics);let p=await discoverScheduleSources({agentRoot:r,rootEntries:s,source:t});a.push(...p.diagnostics);let m=await discoverConnectionSources({rootEntries:s,rootPath:r,source:t});a.push(...m.diagnostics);let h=await discoverMemorySources({rootEntries:s,rootPath:r,source:t});a.push(...h.diagnostics);let g=await discoverSandboxSource({rootEntries:s,rootPath:r,source:t});if(a.push(...g.diagnostics),i===`extension`){l.module!==void 0&&a.push(createDiscoverErrorDiagnostic({code:DISCOVER_EXTENSION_AGENT_CONFIG_UNSUPPORTED,message:`An extension may not declare agent config (agent.ts) — model, limits, and sandbox are the consuming agent's to own.`,sourcePath:join(r,l.module.logicalPath)})),u.module!==void 0&&a.push(createDiscoverErrorDiagnostic({code:DISCOVER_EXTENSION_INSTRUMENTATION_UNSUPPORTED,message:`An extension may not declare instrumentation — it is a singleton owned by the consuming agent.`,sourcePath:join(r,u.module.logicalPath)}));let[e]=h.memories;e!==void 0&&a.push(createDiscoverErrorDiagnostic({code:DISCOVER_EXTENSION_MEMORY_UNSUPPORTED,message:`An extension may not declare memory — scope and lifecycle state belong to the consuming application.`,sourcePath:join(r,e.logicalPath)})),g.sandbox!==null&&a.push(createDiscoverErrorDiagnostic({code:DISCOVER_EXTENSION_SANDBOX_UNSUPPORTED,message:`An extension may not declare a sandbox — it is the consuming agent's to own.`,sourcePath:join(r,g.sandbox.logicalPath)}))}let _=await discoverNamedSourceDirectory({directoryName:`tools`,invalidDirectoryCode:DISCOVER_TOOLS_DIRECTORY_INVALID,invalidDirectoryMessage:`Expected "${join(r,`tools`)}" to be a directory of authored tools.`,recursive:!0,rootEntries:s,rootPath:r,source:t,validateSegment:createToolNameDiagnostic});a.push(..._.diagnostics);let v=await discoverNamedSourceDirectory({directoryName:`hooks`,invalidDirectoryCode:DISCOVER_HOOKS_DIRECTORY_INVALID,invalidDirectoryMessage:`Expected "${join(r,`hooks`)}" to be a directory of authored hooks.`,recursive:!0,rootEntries:s,rootPath:r,source:t,validateSegment:createHookNameDiagnostic});a.push(...v.diagnostics);let y=await discoverNamedSourceDirectory({directoryName:`extensions`,invalidDirectoryCode:DISCOVER_EXTENSIONS_DIRECTORY_INVALID,invalidDirectoryMessage:`Expected "${join(r,`extensions`)}" to be a directory of extension mounts.`,recursive:!1,rootEntries:s,rootPath:r,source:t,validateSegment:createExtensionNameDiagnostic});a.push(...y.diagnostics);let b=await discoverSkills({agentRoot:r,source:t});a.push(...b.diagnostics);let x=await discoverSubagents({agentRoot:r,appRoot:n,source:t});a.push(...x.diagnostics);let S=await collectExtensionMounts({agentRoot:r,fileMounts:y.sources,rootEntries:s,source:t});a.push(...S.diagnostics);let C=[];if(i!==`agent`)for(let e of S.mounts)a.push(createDiscoverErrorDiagnostic({code:DISCOVER_EXTENSION_NESTED_MOUNT_UNSUPPORTED,message:`"${e.mountRef.logicalPath}" mounts an extension from inside an extension, which is not supported yet. Extensions cannot mount other extensions; remove the "extensions/" slot.`,sourcePath:join(r,e.mountRef.logicalPath)}));else{let e=await resolveExtensionMounts({agentRoot:r,appRoot:n,mounts:S.mounts,source:t});a.push(...e.diagnostics),C=e.mounts}let w={agentRoot:r,appRoot:n,channels:d.sources,connections:m.connections,packageName:o,diagnostics:a,extensions:i===`extension`?[]:S.mounts.map(e=>e.mountRef),resolvedExtensions:C,hooks:v.sources,memories:i===`extension`?[]:h.memories,lib:f.lib,instructions:c.instructions,sandbox:i===`extension`?null:g.sandbox,sandboxWorkspaces:i===`extension`||g.sandboxWorkspace===null?[]:[g.sandboxWorkspace],schedules:p.schedules,skills:b.skills,tools:_.sources,subagents:x.subagents};return i!==`extension`&&l.module!==void 0&&(w.configModule=l.module),i!==`extension`&&u.module!==void 0&&(w.instrumentation=u.module),{diagnostics:a,manifest:createAgentSourceManifest(w)}}async function resolveExtensionMounts(e){let t=[],n=[];for(let r of e.mounts){let i=await locateExtensionMount({source:e.source,agentRoot:e.agentRoot,appRoot:e.appRoot,mount:r.mountRef,namespace:r.namespace});if(t.push(...i.diagnostics),i.location===void 0)continue;let a=await discoverAgent({agentRoot:i.location.sourceRoot,appRoot:i.location.packageRoot,source:e.source,role:`extension`});t.push(...a.diagnostics);let o;if(r.overridesRoot!==void 0){let n=await discoverAgent({agentRoot:r.overridesRoot,appRoot:e.appRoot,source:e.source,role:`extension`});t.push(...n.diagnostics),o=n.manifest}n.push({namespace:i.location.namespace,specifier:i.location.specifier,packageName:i.location.packageName,packageRoot:i.location.packageRoot,sourceRoot:i.location.sourceRoot,manifest:a.manifest,externalDependencies:i.location.externalDependencies,overrides:o})}return{diagnostics:t,mounts:n}}async function discoverExtensionMountDeclarations(e){let t=e.source??createDiskProjectSource(),n=resolve(e.agentRoot),r=await readSortedDirectoryEntries(t,n),i=await discoverNamedSourceDirectory({directoryName:`extensions`,invalidDirectoryCode:DISCOVER_EXTENSIONS_DIRECTORY_INVALID,invalidDirectoryMessage:`Expected "${join(n,`extensions`)}" to be a directory of extension mounts.`,recursive:!1,rootEntries:r,rootPath:n,source:t,validateSegment:createExtensionNameDiagnostic}),a=await collectExtensionMounts({agentRoot:n,fileMounts:i.sources,rootEntries:r,source:t});return{diagnostics:[...i.diagnostics,...a.diagnostics],mounts:a.mounts}}async function collectExtensionMounts(e){let t=[],n=join(e.agentRoot,`extensions`),r=e.fileMounts.map(e=>({namespace:mountNamespace(e.logicalPath),mountRef:e})),i=new Set(r.map(e=>e.namespace)),a=e.rootEntries.find(e=>e.name===`extensions`),o=[],s=new Set;if(a?.isDirectory()===!0){let r=await readSortedDirectoryEntries(e.source,n);for(let a of r){if(!a.isDirectory())continue;let r=a.name,c=join(n,r),l=createExtensionNameDiagnostic(r,c);if(l!==null){t.push(l);continue}let u=discoverFlatModuleSource({rootEntries:await readSortedDirectoryEntries(e.source,c),rootPath:c,slotName:`extension`});if(t.push(...u.diagnostics),u.module===void 0){t.push(createDiscoverErrorDiagnostic({code:DISCOVER_EXTENSION_MOUNT_MISSING_DECLARATION,message:`Extension mount directory "extensions/${r}/" must declare its mount in "extension.ts" (or another supported module extension).`,sourcePath:c}));continue}i.has(r)&&s.add(r),o.push({namespace:r,mountRef:createModuleSourceRef({logicalPath:normalizeLogicalPath(join(`extensions`,r,u.module.logicalPath))}),overridesRoot:c})}}for(let e of s)t.push(createDiscoverErrorDiagnostic({code:DISCOVER_EXTENSION_MOUNT_AMBIGUOUS,message:`Extension namespace "${e}" is claimed by both a file mount ("extensions/${e}.ts") and a directory mount ("extensions/${e}/"). Keep only one.`,sourcePath:n}));return{diagnostics:t,mounts:[...r,...o].filter(e=>!s.has(e.namespace))}}async function tryReadPackageJsonName(e,t){try{let n=join(t,`package.json`),r=JSON.parse(await e.readTextFile(n)).name;return typeof r!=`string`||r.length===0?void 0:stripNpmPackageScope(r)}catch{return}}export{discoverAgent,discoverExtensionMountDeclarations,resolveExtensionMounts};