File size: 8,480 Bytes
89a2873 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 | import { Global } from "@opencode-ai/core/global"
import { InstallationVersion } from "@opencode-ai/core/installation/version"
import { createOpencodeClient } from "@opencode-ai/sdk/v2/client"
import { ServerAuth } from "@opencode-ai/server/auth"
import { Context, Effect, FileSystem, Layer, Option, Schedule, Schema, Scope } from "effect"
import { HttpServer } from "effect/unstable/http"
import { randomBytes, randomUUID } from "crypto"
import { spawn } from "node:child_process"
import path from "path"
export interface Interface {
readonly client: () => Effect.Effect<ReturnType<typeof createOpencodeClient>, unknown>
readonly transport: () => Effect.Effect<{ url: string; headers: RequestInit["headers"] }, unknown>
readonly start: () => Effect.Effect<string, Error>
readonly status: () => Effect.Effect<string | undefined>
readonly stop: () => Effect.Effect<void, unknown>
readonly password: (value?: string) => Effect.Effect<string, unknown>
readonly register: (address: HttpServer.Address) => Effect.Effect<void, unknown, Scope.Scope>
}
export class Service extends Context.Service<Service, Interface>()("@opencode/cli/Daemon") {}
const Registration = Schema.Struct({
id: Schema.optional(Schema.String),
version: Schema.optional(Schema.String),
url: Schema.String,
pid: Schema.Int.check(Schema.isGreaterThan(0)),
})
type Registration = typeof Registration.Type
function sameRegistration(left: Registration, right: Registration) {
return left.id === right.id && left.version === right.version && left.url === right.url && left.pid === right.pid
}
export const layer = Layer.effect(
Service,
Effect.gen(function* () {
const fs = yield* FileSystem.FileSystem
const directory = Global.Path.state
const file = path.join(directory, "server.json")
const passwordFile = path.join(directory, "password")
const decodeRegistration = Schema.decodeUnknownEffect(Schema.fromJsonString(Registration))
const password = Effect.fn("cli.daemon.password")(function* (value?: string) {
const existing = yield* fs.readFileString(passwordFile).pipe(Effect.catch(() => Effect.succeed(undefined)))
if (value === undefined && existing) return existing
// Keep one private credential across server restarts so discovered clients
// can reconnect without exposing a password flag or environment variable.
const generated = value ?? randomBytes(32).toString("base64url")
const temp = passwordFile + ".tmp"
yield* fs.makeDirectory(directory, { recursive: true })
yield* fs.writeFileString(temp, generated, { mode: 0o600 })
yield* fs.rename(temp, passwordFile)
return generated
})
const registration = Effect.fnUntraced(function* () {
return yield* fs.readFileString(file).pipe(Effect.flatMap(decodeRegistration))
})
const createClient = Effect.fnUntraced(function* (url: string) {
return createOpencodeClient({ baseUrl: url, headers: ServerAuth.headers({ password: yield* password() }) })
})
const healthy = Effect.fnUntraced(function* () {
const info = yield* registration()
const client = yield* createClient(info.url)
const response = yield* Effect.tryPromise(() => client.v2.health.get({ signal: AbortSignal.timeout(2_000) }))
if (response.data?.healthy === true) return info
return yield* Effect.fail(new Error("Registered server is not healthy"))
})
const compatible = Effect.fnUntraced(function* () {
const info = yield* healthy()
if (info.version === InstallationVersion) return info
return yield* Effect.fail(new Error("Registered server version does not match the client"))
})
const signal = (pid: number, signal: NodeJS.Signals) =>
Effect.try({ try: () => process.kill(pid, signal), catch: (cause) => cause }).pipe(Effect.ignore)
const awaitStopped = Effect.fnUntraced(function* (pid: number) {
const running = yield* Effect.try({ try: () => process.kill(pid, 0), catch: () => false }).pipe(
Effect.orElseSucceed(() => false),
)
if (!running) return true
return yield* Effect.fail(new Error(`Server process ${pid} is still running`))
})
const stopProcess = Effect.fnUntraced(function* (info: Registration) {
const current = yield* healthy().pipe(Effect.option)
if (Option.isNone(current) || !sameRegistration(current.value, info)) return
yield* signal(info.pid, "SIGTERM")
const stopped = yield* awaitStopped(info.pid).pipe(
Effect.retry(Schedule.spaced("50 millis").pipe(Schedule.both(Schedule.recurs(100)))),
Effect.option,
)
if (Option.isSome(stopped)) return
const latest = yield* healthy().pipe(Effect.option)
if (Option.isNone(latest) || !sameRegistration(latest.value, info)) return
yield* signal(info.pid, "SIGKILL")
yield* awaitStopped(info.pid).pipe(
Effect.retry(Schedule.spaced("50 millis").pipe(Schedule.both(Schedule.recurs(100)))),
)
})
const start = Effect.fn("cli.daemon.start")(function* () {
const existing = yield* healthy().pipe(Effect.option)
const found = Option.getOrUndefined(existing)
const compiled = path.basename(process.execPath).replace(/\.exe$/, "") !== "bun"
if (found?.version === InstallationVersion && compiled) return found.url
if (found) yield* stopProcess(found).pipe(Effect.ignore)
const entrypoint = compiled ? undefined : process.argv[1]
if (!compiled && entrypoint === undefined)
return yield* Effect.fail(new Error("Failed to resolve CLI entrypoint"))
yield* Effect.try({
try: () => {
spawn(process.execPath, [...(entrypoint ? [entrypoint] : []), "serve", "--register"], {
detached: true,
stdio: "ignore",
}).unref()
},
catch: (cause) => new Error("Failed to start server", { cause }),
})
return yield* compatible().pipe(
Effect.retry(Schedule.spaced("50 millis").pipe(Schedule.both(Schedule.recurs(100)))),
Effect.map((info) => info.url),
Effect.mapError(() => new Error("Failed to start server")),
)
})
const transport = Effect.fn("cli.daemon.transport")(function* () {
return { url: yield* start(), headers: ServerAuth.headers({ password: yield* password() }) }
})
const client = Effect.fn("cli.daemon.client")(function* () {
const connection = yield* transport()
return createOpencodeClient({ baseUrl: connection.url, headers: connection.headers })
})
const status = Effect.fn("cli.daemon.status")(function* () {
const existing = yield* healthy().pipe(Effect.option)
const found = Option.getOrUndefined(existing)
if (found?.version === InstallationVersion) return found.url
if (found) return undefined
yield* fs.remove(file).pipe(Effect.ignore)
return undefined
})
const stop = Effect.fn("cli.daemon.stop")(function* () {
const existing = yield* healthy().pipe(Effect.option)
// A stale registration may point at a PID that has since been reused by
// another process. Only signal the PID after authenticating the server.
if (Option.isNone(existing)) return yield* fs.remove(file).pipe(Effect.ignore)
yield* stopProcess(existing.value)
yield* fs.remove(file).pipe(Effect.ignore)
})
const register = Effect.fn("cli.daemon.register")(function* (address: HttpServer.Address) {
const id = randomUUID()
const temp = file + "." + id + ".tmp"
yield* fs.makeDirectory(directory, { recursive: true })
yield* fs.writeFileString(
temp,
JSON.stringify({ id, version: InstallationVersion, url: HttpServer.formatAddress(address), pid: process.pid }),
{ mode: 0o600 },
)
yield* fs.rename(temp, file)
yield* registration().pipe(
Effect.flatMap((info) => (info.id === id ? Effect.void : signal(process.pid, "SIGTERM"))),
Effect.catch(() => signal(process.pid, "SIGTERM")),
Effect.repeat(Schedule.spaced("10 seconds")),
Effect.forkScoped,
)
yield* Effect.addFinalizer(() =>
registration().pipe(
Effect.flatMap((info) => (info.id === id ? fs.remove(file) : Effect.void)),
Effect.ignore,
),
)
})
return Service.of({ client, transport, start, status, stop, password, register })
}),
)
export * as Daemon from "./daemon"
|