misc fixes for alpha.16 (#3091)

* port misc fixes from feature/nvidia

* switch back to official tor proxy on 9050

* refactor OpenUI

* fix typo

* fixes, plus getServiceManifest

* fix EffectCreator, bump to beta.47

* fixes

sdk/package/lib/StartSdk.ts

@@ -46,7 +46,7 @@ import {
   CheckDependencies,
   checkDependencies,
 } from "../../base/lib/dependencies/dependencies"
-import { GetSslCertificate } from "./util"
+import { GetSslCertificate, getServiceManifest } from "./util"
 import { getDataVersion, setDataVersion } from "./version"
 import { MaybeFn } from "../../base/lib/actions/setupActions"
 import { GetInput } from "../../base/lib/actions/setupActions"
@@ -107,6 +107,7 @@ export class StartSdk<Manifest extends T.SDKManifest> {
       | "getContainerIp"
       | "getDataVersion"
       | "setDataVersion"
+      | "getServiceManifest"
 
     // prettier-ignore
     type StartSdkEffectWrapper = {
@@ -441,11 +442,12 @@ export class StartSdk<Manifest extends T.SDKManifest> {
       ) => new ServiceInterfaceBuilder({ ...options, effects }),
       getSystemSmtp: <E extends Effects>(effects: E) =>
         new GetSystemSmtp(effects),
-      getSslCerificate: <E extends Effects>(
+      getSslCertificate: <E extends Effects>(
         effects: E,
         hostnames: string[],
         algorithm?: T.Algorithm,
       ) => new GetSslCertificate(effects, hostnames, algorithm),
+      getServiceManifest,
       healthCheck: {
         checkPortListening,
         checkWebUrl,

sdk/package/lib/util/GetServiceManifest.ts

@@ -0,0 +1,152 @@
+import { Effects } from "../../../base/lib/Effects"
+import { Manifest, PackageId } from "../../../base/lib/osBindings"
+import { DropGenerator, DropPromise } from "../../../base/lib/util/Drop"
+import { deepEqual } from "../../../base/lib/util/deepEqual"
+
+export class GetServiceManifest<Mapped = Manifest> {
+  constructor(
+    readonly effects: Effects,
+    readonly packageId: PackageId,
+    readonly map: (manifest: Manifest | null) => Mapped,
+    readonly eq: (a: Mapped, b: Mapped) => boolean,
+  ) {}
+
+  /**
+   * Returns the manifest of a service. Reruns the context from which it has been called if the underlying value changes
+   */
+  async const() {
+    let abort = new AbortController()
+    const watch = this.watch(abort.signal)
+    const res = await watch.next()
+    if (this.effects.constRetry) {
+      watch.next().then(() => {
+        abort.abort()
+        this.effects.constRetry && this.effects.constRetry()
+      })
+    }
+    return res.value
+  }
+  /**
+   * Returns the manifest of a service. Does nothing if it changes
+   */
+  async once() {
+    const manifest = await this.effects.getServiceManifest({
+      packageId: this.packageId,
+    })
+    return this.map(manifest)
+  }
+
+  private async *watchGen(abort?: AbortSignal) {
+    let prev = null as { value: Mapped } | null
+    const resolveCell = { resolve: () => {} }
+    this.effects.onLeaveContext(() => {
+      resolveCell.resolve()
+    })
+    abort?.addEventListener("abort", () => resolveCell.resolve())
+    while (this.effects.isInContext && !abort?.aborted) {
+      let callback: () => void = () => {}
+      const waitForNext = new Promise<void>((resolve) => {
+        callback = resolve
+        resolveCell.resolve = resolve
+      })
+      const next = this.map(
+        await this.effects.getServiceManifest({
+          packageId: this.packageId,
+          callback: () => callback(),
+        }),
+      )
+      if (!prev || !this.eq(prev.value, next)) {
+        prev = { value: next }
+        yield next
+      }
+      await waitForNext
+    }
+    return new Promise<never>((_, rej) => rej(new Error("aborted")))
+  }
+
+  /**
+   * Watches the manifest of a service. Returns an async iterator that yields whenever the value changes
+   */
+  watch(abort?: AbortSignal): AsyncGenerator<Mapped, never, unknown> {
+    const ctrl = new AbortController()
+    abort?.addEventListener("abort", () => ctrl.abort())
+    return DropGenerator.of(this.watchGen(ctrl.signal), () => ctrl.abort())
+  }
+
+  /**
+   * Watches the manifest of a service. Takes a custom callback function to run whenever it changes
+   */
+  onChange(
+    callback: (
+      value: Mapped | null,
+      error?: Error,
+    ) => { cancel: boolean } | Promise<{ cancel: boolean }>,
+  ) {
+    ;(async () => {
+      const ctrl = new AbortController()
+      for await (const value of this.watch(ctrl.signal)) {
+        try {
+          const res = await callback(value)
+          if (res.cancel) {
+            ctrl.abort()
+            break
+          }
+        } catch (e) {
+          console.error(
+            "callback function threw an error @ GetServiceManifest.onChange",
+            e,
+          )
+        }
+      }
+    })()
+      .catch((e) => callback(null, e))
+      .catch((e) =>
+        console.error(
+          "callback function threw an error @ GetServiceManifest.onChange",
+          e,
+        ),
+      )
+  }
+
+  /**
+   * Watches the manifest of a service. Returns when the predicate is true
+   */
+  waitFor(pred: (value: Mapped) => boolean): Promise<Mapped> {
+    const ctrl = new AbortController()
+    return DropPromise.of(
+      Promise.resolve().then(async () => {
+        for await (const next of this.watchGen(ctrl.signal)) {
+          if (pred(next)) {
+            return next
+          }
+        }
+        throw new Error("context left before predicate passed")
+      }),
+      () => ctrl.abort(),
+    )
+  }
+}
+
+export function getServiceManifest(
+  effects: Effects,
+  packageId: PackageId,
+): GetServiceManifest<Manifest>
+export function getServiceManifest<Mapped>(
+  effects: Effects,
+  packageId: PackageId,
+  map: (manifest: Manifest | null) => Mapped,
+  eq?: (a: Mapped, b: Mapped) => boolean,
+): GetServiceManifest<Mapped>
+export function getServiceManifest<Mapped>(
+  effects: Effects,
+  packageId: PackageId,
+  map?: (manifest: Manifest | null) => Mapped,
+  eq?: (a: Mapped, b: Mapped) => boolean,
+): GetServiceManifest<Mapped> {
+  return new GetServiceManifest(
+    effects,
+    packageId,
+    map ?? ((a) => a as Mapped),
+    eq ?? ((a, b) => deepEqual(a, b)),
+  )
+}

sdk/package/lib/util/index.ts

@@ -1,5 +1,6 @@
 export * from "../../../base/lib/util"
 export { GetSslCertificate } from "./GetSslCertificate"
+export { GetServiceManifest, getServiceManifest } from "./GetServiceManifest"
 
 export { Drop } from "../../../base/lib/util/Drop"
 export { Volume, Volumes } from "./Volume"