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server.ts
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import { Log } from "../util/log"
import { describeRoute, generateSpecs, validator, resolver, openAPIRouteHandler } from "hono-openapi"
import { Hono } from "hono"
import { compress } from "hono/compress"
import { cors } from "hono/cors"
import { basicAuth } from "hono/basic-auth"
import type { UpgradeWebSocket } from "hono/ws"
import z from "zod"
import { Auth } from "../auth"
import { Flag } from "../flag/flag"
import { ProviderID } from "../provider/schema"
import { createAdaptorServer, type ServerType } from "@hono/node-server"
import { createNodeWebSocket } from "@hono/node-ws"
import { WorkspaceRouterMiddleware } from "./router"
import { errors } from "./error"
import { GlobalRoutes } from "./routes/global"
import { MDNS } from "./mdns"
import { lazy } from "@/util/lazy"
import { errorHandler } from "./middleware"
import { InstanceRoutes } from "./instance"
import { initProjectors } from "./projectors"
// @ts-ignore This global is needed to prevent ai-sdk from logging warnings to stdout https://github.com/vercel/ai/blob/2dc67e0ef538307f21368db32d5a12345d98831b/packages/ai/src/logger/log-warnings.ts#L85
globalThis.AI_SDK_LOG_WARNINGS = false
initProjectors()
export namespace Server {
export type Listener = {
hostname: string
port: number
url: URL
stop: (close?: boolean) => Promise<void>
}
const log = Log.create({ service: "server" })
const zipped = compress()
const skipCompress = (path: string, method: string) => {
if (path === "/event" || path === "/global/event" || path === "/global/sync-event") return true
if (method === "POST" && /\/session\/[^/]+\/(message|prompt_async)$/.test(path)) return true
return false
}
export const Default = lazy(() => create({}).app)
export function ControlPlaneRoutes(upgrade: UpgradeWebSocket, app = new Hono(), opts?: { cors?: string[] }): Hono {
return app
.onError(errorHandler(log))
.use((c, next) => {
// Allow CORS preflight requests to succeed without auth.
// Browser clients sending Authorization headers will preflight with OPTIONS.
if (c.req.method === "OPTIONS") return next()
const password = Flag.OPENCODE_SERVER_PASSWORD
if (!password) return next()
const username = Flag.OPENCODE_SERVER_USERNAME ?? "opencode"
return basicAuth({ username, password })(c, next)
})
.use(async (c, next) => {
const skip = c.req.path === "/log"
if (!skip) {
log.info("request", {
method: c.req.method,
path: c.req.path,
})
}
const timer = log.time("request", {
method: c.req.method,
path: c.req.path,
})
await next()
if (!skip) timer.stop()
})
.use(
cors({
maxAge: 86_400,
origin(input) {
if (!input) return
if (input.startsWith("http://localhost:")) return input
if (input.startsWith("http://127.0.0.1:")) return input
if (
input === "tauri://localhost" ||
input === "http://tauri.localhost" ||
input === "https://tauri.localhost"
)
return input
if (/^https:\/\/([a-z0-9-]+\.)*opencode\.ai$/.test(input)) return input
if (opts?.cors?.includes(input)) return input
},
}),
)
.use((c, next) => {
if (skipCompress(c.req.path, c.req.method)) return next()
return zipped(c, next)
})
.route("/global", GlobalRoutes())
.put(
"/auth/:providerID",
describeRoute({
summary: "Set auth credentials",
description: "Set authentication credentials",
operationId: "auth.set",
responses: {
200: {
description: "Successfully set authentication credentials",
content: {
"application/json": {
schema: resolver(z.boolean()),
},
},
},
...errors(400),
},
}),
validator(
"param",
z.object({
providerID: ProviderID.zod,
}),
),
validator("json", Auth.Info.zod),
async (c) => {
const providerID = c.req.valid("param").providerID
const info = c.req.valid("json")
await Auth.set(providerID, info)
return c.json(true)
},
)
.delete(
"/auth/:providerID",
describeRoute({
summary: "Remove auth credentials",
description: "Remove authentication credentials",
operationId: "auth.remove",
responses: {
200: {
description: "Successfully removed authentication credentials",
content: {
"application/json": {
schema: resolver(z.boolean()),
},
},
},
...errors(400),
},
}),
validator(
"param",
z.object({
providerID: ProviderID.zod,
}),
),
async (c) => {
const providerID = c.req.valid("param").providerID
await Auth.remove(providerID)
return c.json(true)
},
)
.get(
"/doc",
openAPIRouteHandler(app, {
documentation: {
info: {
title: "opencode",
version: "0.0.3",
description: "opencode api",
},
openapi: "3.1.1",
},
}),
)
.use(
validator(
"query",
z.object({
directory: z.string().optional(),
workspace: z.string().optional(),
}),
),
)
.post(
"/log",
describeRoute({
summary: "Write log",
description: "Write a log entry to the server logs with specified level and metadata.",
operationId: "app.log",
responses: {
200: {
description: "Log entry written successfully",
content: {
"application/json": {
schema: resolver(z.boolean()),
},
},
},
...errors(400),
},
}),
validator(
"json",
z.object({
service: z.string().meta({ description: "Service name for the log entry" }),
level: z.enum(["debug", "info", "error", "warn"]).meta({ description: "Log level" }),
message: z.string().meta({ description: "Log message" }),
extra: z
.record(z.string(), z.any())
.optional()
.meta({ description: "Additional metadata for the log entry" }),
}),
),
async (c) => {
const { service, level, message, extra } = c.req.valid("json")
const logger = Log.create({ service })
switch (level) {
case "debug":
logger.debug(message, extra)
break
case "info":
logger.info(message, extra)
break
case "error":
logger.error(message, extra)
break
case "warn":
logger.warn(message, extra)
break
}
return c.json(true)
},
)
.use(WorkspaceRouterMiddleware(upgrade))
}
function create(opts: { cors?: string[] }) {
const app = new Hono()
const ws = createNodeWebSocket({ app })
return {
app: ControlPlaneRoutes(ws.upgradeWebSocket, app, opts),
ws,
}
}
export function createApp(opts: { cors?: string[] }) {
return create(opts).app
}
export async function openapi() {
// Build a fresh app with all routes registered directly so
// hono-openapi can see describeRoute metadata (`.route()` wraps
// handlers when the sub-app has a custom errorHandler, which
// strips the metadata symbol).
const { app, ws } = create({})
InstanceRoutes(ws.upgradeWebSocket, app)
const result = await generateSpecs(app, {
documentation: {
info: {
title: "opencode",
version: "1.0.0",
description: "opencode api",
},
openapi: "3.1.1",
},
})
return result
}
export let url: URL
export async function listen(opts: {
port: number
hostname: string
mdns?: boolean
mdnsDomain?: string
cors?: string[]
}): Promise<Listener> {
const built = create(opts)
const start = (port: number) =>
new Promise<ServerType>((resolve, reject) => {
const server = createAdaptorServer({ fetch: built.app.fetch })
built.ws.injectWebSocket(server)
const fail = (err: Error) => {
cleanup()
reject(err)
}
const ready = () => {
cleanup()
resolve(server)
}
const cleanup = () => {
server.off("error", fail)
server.off("listening", ready)
}
server.once("error", fail)
server.once("listening", ready)
server.listen(port, opts.hostname)
})
const server = opts.port === 0 ? await start(4096).catch(() => start(0)) : await start(opts.port)
const addr = server.address()
if (!addr || typeof addr === "string") {
throw new Error(`Failed to resolve server address for port ${opts.port}`)
}
const next = new URL("http://localhost")
next.hostname = opts.hostname
next.port = String(addr.port)
url = next
const mdns =
opts.mdns &&
addr.port &&
opts.hostname !== "127.0.0.1" &&
opts.hostname !== "localhost" &&
opts.hostname !== "::1"
if (mdns) {
MDNS.publish(addr.port, opts.mdnsDomain)
} else if (opts.mdns) {
log.warn("mDNS enabled but hostname is loopback; skipping mDNS publish")
}
let closing: Promise<void> | undefined
return {
hostname: opts.hostname,
port: addr.port,
url: next,
stop(close?: boolean) {
closing ??= new Promise((resolve, reject) => {
if (mdns) MDNS.unpublish()
server.close((err) => {
if (err) {
reject(err)
return
}
resolve()
})
if (close) {
if ("closeAllConnections" in server && typeof server.closeAllConnections === "function") {
server.closeAllConnections()
}
if ("closeIdleConnections" in server && typeof server.closeIdleConnections === "function") {
server.closeIdleConnections()
}
}
})
return closing
},
}
}
}