| 1 | import { Action } from "@/Action"; |
| 2 | import * as Cloudflare from "@/Cloudflare"; |
| 3 | import * as Test from "@/Test/Alchemy"; |
| 4 | import { poll } from "@/Util/poll.ts"; |
| 5 | import { expect } from "alchemy-test"; |
| 6 | import * as Effect from "effect/Effect"; |
| 7 | import { MinimumLogLevel } from "effect/References"; |
| 8 | import * as Schedule from "effect/Schedule"; |
| 9 | |
| 10 | const { test } = Test.make({ providers: Cloudflare.providers() }); |
| 11 | |
| 12 | const logLevel = Effect.provideService( |
| 13 | MinimumLogLevel, |
| 14 | process.env.DEBUG ? "Debug" : "Info", |
| 15 | ); |
| 16 | |
| 17 | // Reading Flagship feature flags inside an Action via `ReadFlagsLocal` — the |
| 18 | // local (current-credentials) implementation of the `ReadFlags` binding. It |
| 19 | // evaluates flags over the HTTP `evaluate` endpoint instead of the native |
| 20 | // Worker binding. Exercises the value + details client methods and the accessor |
| 21 | // mechanism (`yield* app.appId` resolved at apply time). |
| 22 | test.provider( |
| 23 | "ReadFlagsLocal: evaluate a flag from an Action", |
| 24 | (stack) => |
| 25 | Effect.gen(function* () { |
| 26 | yield* stack.destroy(); |
| 27 | |
| 28 | const key = "alchemy-test-flag-read-local"; |
| 29 | |
| 30 | const out = yield* stack.deploy( |
| 31 | Effect.gen(function* () { |
| 32 | const app = yield* Cloudflare.Flagship.App("ReadFlagsLocalApp", { |
| 33 | name: "alchemy-test-flagship-read-local", |
| 34 | }); |
| 35 | // defaultVariation "on" -> with no rules the flag always evaluates |
| 36 | // to `true`, which is distinct from the client-side default `false`, |
| 37 | // so a successful read is observable. |
| 38 | yield* Cloudflare.Flagship.Flag("ReadFlagsLocalFlag", { |
| 39 | appId: app.appId, |
| 40 | key, |
| 41 | defaultVariation: "on", |
| 42 | variations: { off: false, on: true }, |
| 43 | }); |
| 44 | |
| 45 | const Read = Action( |
| 46 | "Read", |
| 47 | Effect.gen(function* () { |
| 48 | const flags = yield* Cloudflare.Flagship.ReadFlags(app); |
| 49 | |
| 50 | return Effect.fn(function* () { |
| 51 | // The edge `evaluate` endpoint can lag a freshly-created flag, |
| 52 | // and each read can land on a different edge; poll until |
| 53 | // every read returns the flag's true value (bounded). |
| 54 | const { enabled, details, untyped } = yield* poll({ |
| 55 | description: "evaluate returns the flag value", |
| 56 | effect: Effect.all({ |
| 57 | enabled: flags.getBooleanValue(key, false), |
| 58 | details: flags.getBooleanDetails(key, false), |
| 59 | untyped: flags.get(key), |
| 60 | }), |
| 61 | predicate: (read) => |
| 62 | read.enabled === true && |
| 63 | read.details.value === true && |
| 64 | read.untyped === true, |
| 65 | schedule: Schedule.max([ |
| 66 | Schedule.spaced("3 seconds"), |
| 67 | Schedule.recurs(20), |
| 68 | ]), |
| 69 | }); |
| 70 | // A boolean flag read as a string falls back to the default. |
| 71 | const asString = yield* flags.getStringValue(key, "fallback"); |
| 72 | |
| 73 | return { enabled, details, asString, untyped }; |
| 74 | }); |
| 75 | }).pipe(Effect.provide(Cloudflare.Flagship.ReadFlagsLocal)), |
| 76 | ); |
| 77 | |
| 78 | return yield* Read({}); |
| 79 | }), |
| 80 | ); |
| 81 | |
| 82 | expect(out.enabled).toBe(true); |
| 83 | expect(out.details.flagKey).toBe(key); |
| 84 | expect(out.details.value).toBe(true); |
| 85 | expect(out.details.variant).toBe("on"); |
| 86 | expect(out.asString).toBe("fallback"); |
| 87 | expect(out.untyped).toBe(true); |
| 88 | |
| 89 | yield* stack.destroy(); |
| 90 | }).pipe(logLevel), |
| 91 | { |
| 92 | tags: ["provider:cloudflare", "provider:cloudflare:flagship", "live"], |
| 93 | timeout: 120_000, |
| 94 | }, |
| 95 | ); |