eve
Version:
Filesystem-first framework for durable backend AI agents that run anywhere.
3 lines • 4.72 kB
JavaScript
import{EVE_HEALTH_ROUTE_PATH}from"#protocol/routes.js";import{existsSync}from"node:fs";import{join,resolve}from"node:path";import{spawn}from"node:child_process";import{loadDevelopmentEnvironmentFiles}from"#cli/dev/environment.js";import{setTimeout}from"node:timers/promises";import{prewarmBuiltAppSandboxes}from"#execution/sandbox/prewarm.js";import{createServer}from"node:net";const HEALTH_TIMEOUT_MS=6e4,LOCAL_SERVER_URL_PATTERN=/https?:\/\/(?:\[[^\]\s]+\]|[^\s/:[\]]+)(?::\d+)?/,WILDCARD_LISTEN_HOSTNAMES=new Set([`[::]`,`::`,`0.0.0.0`]);function isRecord(e){return typeof e==`object`&&!!e&&!Array.isArray(e)}function isAddressInUseError(e){return e instanceof Error&&`code`in e&&e.code===`EADDRINUSE`}function resolveOutputServerEntry(e){return join(resolve(e),`.output`,`server`,`index.mjs`)}function readEnvironmentPort(){let e=process.env.PORT;if(e===void 0||e.trim()===``)return;let t=Number(e);if(!Number.isInteger(t)||t<0||t>65535)throw Error(`Invalid PORT environment variable "${e}". Expected an integer between 0 and 65535.`);return t}function normalizeServerClientUrl(e){let t=new URL(e);return WILDCARD_LISTEN_HOSTNAMES.has(t.hostname)&&(t.hostname=`127.0.0.1`),t.toString()}function formatClientHost(e){return WILDCARD_LISTEN_HOSTNAMES.has(e)?`127.0.0.1`:e.includes(`:`)&&!e.startsWith(`[`)?`[${e}]`:e}function createKnownPortUrl(e){return`http://${formatClientHost(e.host)}:${String(e.port)}/`}async function resolveListenPort(e){if(e.port!==0)return e.port;let t=createServer();return await new Promise((n,r)=>{t.once(`error`,r),t.listen(0,e.host,()=>{let e=t.address();t.close(t=>{if(t){r(t);return}if(e===null||typeof e==`string`){r(Error(`Failed to resolve an available port for eve start.`));return}n(e.port)})})})}function parseServerUrlFromOutput(e){let t=LOCAL_SERVER_URL_PATTERN.exec(e);if(t!==null)return normalizeServerClientUrl(t[0])}async function waitForHealth(t){let{child:n,url:r}=t,i=new URL(EVE_HEALTH_ROUTE_PATH,r).toString(),a=Date.now()+HEALTH_TIMEOUT_MS;for(;Date.now()<a;){let e=t.getStartError();if(e!==void 0)throw e;if(n.exitCode!==null||n.signalCode!==null)throw Error(`Built server process exited (code=${String(n.exitCode)}, signal=${String(n.signalCode)}) before becoming healthy.`);try{if((await fetch(i,{signal:AbortSignal.timeout(2e3)})).ok)return new URL(r).toString()}catch(e){if(isAddressInUseError(e))throw e}await setTimeout(250)}throw Error(`Built server did not become healthy within ${HEALTH_TIMEOUT_MS/1e3}s at ${i}.`)}async function waitForReady(e){let t=Date.now()+HEALTH_TIMEOUT_MS;for(;Date.now()<t;){let t=e.getStartError();if(t!==void 0)throw t;let n=parseServerUrlFromOutput(e.getOutput())??e.knownUrl;if(n!==void 0)return await waitForHealth({child:e.child,getStartError:e.getStartError,url:n});if(e.child.exitCode!==null||e.child.signalCode!==null)throw Error(`Built server process exited (code=${String(e.child.exitCode)}, signal=${String(e.child.signalCode)}) before printing its URL.`);await setTimeout(250)}throw Error([`Built server did not become ready within ${HEALTH_TIMEOUT_MS/1e3}s.`,`Output:`,e.getOutput()].join(`
`))}async function terminate(e){e.exitCode!==null||e.killed||(e.kill(`SIGTERM`),await Promise.race([once(e,`exit`),setTimeout(2e4).then(()=>`timeout`)])===`timeout`&&e.exitCode===null&&(e.kill(`SIGKILL`),await once(e,`exit`)),e.stdout?.destroy(),e.stderr?.destroy())}function once(e,t){return new Promise(n=>{e.once(t,()=>n())})}async function startProductionServer(e,n={}){let o=resolve(e),s=resolveOutputServerEntry(o);if(!existsSync(s))throw Error(`Missing eve build output at ${s}. Run "eve build" before "eve start".`);loadDevelopmentEnvironmentFiles(o),await prewarmBuiltAppSandboxes({appRoot:o,log:e=>console.log(e)});let c=n.host??`0.0.0.0`,l=await resolveListenPort({host:c,port:n.port??readEnvironmentPort()??3e3}),u=createKnownPortUrl({host:c,port:l}),d=``,f=!1,p,m=spawn(process.execPath,[s],{cwd:o,env:{...process.env,HOST:c,NITRO_HOST:c,NITRO_PORT:String(l),PORT:String(l)},stdio:[`ignore`,`pipe`,`pipe`]});m.stdout?.on(`data`,e=>{d+=e.toString(`utf8`),process.stdout.write(e)}),m.stderr?.on(`data`,e=>{d+=e.toString(`utf8`),process.stderr.write(e)});let h=new Promise((e,t)=>{m.once(`error`,e=>{p=e,t(e)}),m.once(`exit`,(n,r)=>{if(f||n===0){e();return}t(Error([`Built server process exited unexpectedly (code=${String(n)}, signal=${String(r)}).`,d].join(`
`)))})});h.catch(()=>void 0);try{return{async close(){f=!0,await terminate(m)},url:await waitForReady({child:m,getStartError:()=>p,getOutput:()=>d,knownUrl:u}),async wait(){await h}}}catch(e){throw f=!0,await terminate(m),isRecord(e)&&e.name===`AbortError`?Error(`Timed out waiting for built eve server to respond.`,{cause:e}):e}}export{startProductionServer};