t3-code-android-nightly/.repos/alchemy-effect/packages/alchemy/test/AWS/DataSync/Bindings.test.ts

import * as AWS from "@/AWS";
import * as Core from "@/Test/Core";
import * as Test from "@/Test/Alchemy";
import * as eventbridge from "@distilled.cloud/aws/eventbridge";
import { describe, expect } from "alchemy-test";
import * as Data from "effect/Data";
import * as Effect from "effect/Effect";
import * as Schedule from "effect/Schedule";
import * as HttpClient from "effect/http/HttpClient";
import * as HttpClientRequest from "effect/http/HttpClientRequest";
import DataSyncTestFunctionLive, { DataSyncTestFunction } from "./handler";

const testOptions = { providers: AWS.providers() };
const { test, beforeAll, afterAll } = Test.make(testOptions);
const sharedStack = Core.scratchStack(testOptions, "DataSyncBindings");

// Lambda function URL cold-start (DNS, IAM propagation, init) can take well
// over 60s on a fresh deploy.
const readinessPolicy = Schedule.max([
  Schedule.fixed("2 seconds"),
  Schedule.recurs(75),
]);

let baseUrl: string;
let functionArn: string;

class TransientUpstream extends Data.TaggedError("TransientUpstream")<{
  readonly status: number;
  readonly body: string;
}> {}

// The shared Lambda fixture occasionally answers a transient 5xx under load
// (cold re-init, IAM propagation on the freshly attached policy that the
// handler's `Effect.orDie` surfaces as a 500). Retry only 5xx; a genuine
// 4xx/assertion failure surfaces immediately.
const send = (request: HttpClientRequest.HttpClientRequest) =>
  HttpClient.execute(request).pipe(
    Effect.flatMap((response) =>
      response.status >= 500
        ? response.text.pipe(
            Effect.flatMap((body) =>
              Effect.fail(
                new TransientUpstream({ status: response.status, body }),
              ),
            ),
          )
        : Effect.succeed(response),
    ),
    Effect.retry({
      while: (e) => e._tag === "TransientUpstream",
      schedule: Schedule.max([
        Schedule.exponential("500 millis"),
        Schedule.recurs(6),
      ]),
    }),
  );

const getJson = (path: string) =>
  send(HttpClientRequest.get(`${baseUrl}${path}`)).pipe(
    Effect.flatMap((r) => r.json),
  );

const postJson = (path: string) =>
  send(HttpClientRequest.post(`${baseUrl}${path}`)).pipe(
    Effect.flatMap((r) => r.json),
  );

describe.sequential(
  "DataSync Bindings",
  {
    tags: [
      "provider:aws",
      "provider:aws:datasync",
      "provider:aws:iam",
      "provider:aws:lambda",
      "provider:aws:location",
      "provider:aws:s3",
      "live",
    ],
  },
  () => {
    beforeAll(
      Effect.gen(function* () {
        yield* Effect.logInfo(
          "DataSync test setup: destroying previous resources",
        );
        yield* sharedStack.destroy();

        yield* Effect.logInfo("DataSync test setup: deploying fixture");
        const attrs = yield* sharedStack.deploy(
          Effect.gen(function* () {
            return yield* DataSyncTestFunction;
          }).pipe(Effect.provide(DataSyncTestFunctionLive)),
        );

        expect(attrs.functionUrl).toBeTruthy();
        baseUrl = attrs.functionUrl!.replace(/\/+$/, "");
        functionArn = attrs.functionArn;

        const readinessUrl = `${baseUrl}/bindings`;
        yield* Effect.logInfo(
          `DataSync test setup: probing readiness at ${readinessUrl}`,
        );
        yield* HttpClient.get(readinessUrl).pipe(
          Effect.flatMap((response) =>
            response.status === 200
              ? Effect.succeed(response)
              : Effect.fail(
                  new Error(`Function not ready: ${response.status}`),
                ),
          ),
          Effect.tapError((error) =>
            Effect.logWarning(
              `DataSync test setup: fixture not ready yet (${String(error)})`,
            ),
          ),
          Effect.retry({ schedule: readinessPolicy }),
        );
      }),
      { timeout: 300_000 },
    );

    afterAll(sharedStack.destroy(), { timeout: 180_000 });

    describe("binding registration", () => {
      test.provider(
        "all six capabilities initialize in the runtime",
        (_stack) =>
          Effect.gen(function* () {
            const response = (yield* getJson("/bindings")) as {
              bound: string[];
            };
            expect(response.bound).toHaveLength(6);
            expect(response.bound).toContain("startTaskExecution");
            expect(response.bound).toContain("cancelTaskExecution");
          }),
      );
    });

    describe("DescribeTask", () => {
      test.provider(
        "reads the bound task's detail (injected task arn)",
        (_stack) =>
          Effect.gen(function* () {
            const response = (yield* getJson("/task")) as {
              taskArn: string;
              status: string;
            };
            expect(response.taskArn).toContain(":task/task-");
            expect(typeof response.status).toBe("string");
          }),
      );
    });

    describe("StartTaskExecution / ListTaskExecutions / DescribeTaskExecution / UpdateTaskExecution / CancelTaskExecution", () => {
      test.provider(
        "starts a run, observes it, throttles, cancels, and waits it out",
        (_stack) =>
          Effect.gen(function* () {
            // Start: the freshly-propagated IAM role can transiently fail the
            // location access test (typed LocationAccessTestFailed, reported
            // by the route as ok:false) — re-poll bounded.
            const started = (yield* postJson("/start").pipe(
              Effect.repeat({
                schedule: Schedule.spaced("10 seconds"),
                until: (r): boolean => (r as { ok: boolean }).ok === true,
                times: 12,
              }),
            )) as { ok: boolean; executionArn?: string; tag?: string };
            expect(started.ok).toBe(true);
            expect(started.executionArn).toContain("/execution/exec-");
            const executionArn = started.executionArn!;
            const query = `?arn=${encodeURIComponent(executionArn)}`;

            // Describe: the run reports a status.
            const execution = (yield* getJson(`/execution${query}`)) as {
              status: string;
            };
            expect(typeof execution.status).toBe("string");

            // List: the run is enumerated under the bound task.
            const executions = (yield* getJson("/executions")) as {
              arns: string[];
            };
            expect(executions.arns).toContain(executionArn);

            // Throttle: valid only in launching/preparing/transferring/
            // verifying — either it lands or DataSync rejects it with the
            // typed InvalidRequestException the route reports.
            const throttled = (yield* postJson(`/throttle${query}`)) as {
              updated: boolean;
              tag?: string;
            };
            if (!throttled.updated) {
              expect(throttled.tag).toBe("InvalidRequestException");
            }

            // Cancel: a queued/launching run is cancellable; if the empty
            // transfer raced to completion, DataSync rejects with the typed
            // InvalidRequestException instead.
            const cancelled = (yield* postJson(`/cancel${query}`)) as {
              cancelled: boolean;
              tag?: string;
            };
            if (!cancelled.cancelled) {
              expect(cancelled.tag).toBe("InvalidRequestException");
            }

            // Observe the run after the cancel: a cancelled queued run parks
            // in CANCELLING (sometimes for minutes) before landing in ERROR —
            // any of the three proves the round-trip. `stack.destroy()`
            // deletes the task cleanly even with a CANCELLING execution, so
            // there is no need to wait for a terminal state.
            const observed = (yield* getJson(`/execution${query}`)) as {
              status: string;
            };
            expect(["CANCELLING", "ERROR", "SUCCESS"]).toContain(
              observed.status,
            );
          }),
        { timeout: 240_000 },
      );
    });

    describe(
      "consumeTaskEvents",
      { tags: ["provider:aws:eventbridge"] },
      () => {
        test.provider(
          "the deploy created an EventBridge rule targeting the function",
          (_stack) =>
            Effect.gen(function* () {
              // Out-of-band via distilled: the fixture's consumeTaskEvents must
              // have materialized as a rule on the default bus with the Lambda
              // as target.
              const { RuleNames } = yield* eventbridge.listRuleNamesByTarget({
                TargetArn: functionArn,
              });
              expect((RuleNames ?? []).length).toBeGreaterThanOrEqual(1);
            }),
        );
      },
    );
  },
);