t3-code-android-nightly/.repos/alchemy-effect/packages/alchemy/test/AWS/DLM/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 DlmTestFunctionLive, { DlmTestFunction } from "./handler";

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

// 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),
  );

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

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

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

        const readinessUrl = `${baseUrl}/bindings`;
        yield* Effect.logInfo(
          `DLM 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: ${response.status}`),
                ),
          ),
          Effect.tapError((error) =>
            Effect.logWarning(
              `DLM test setup: fixture not ready yet (${String(error)})`,
            ),
          ),
          Effect.retry({ schedule: readinessPolicy }),
        );
      }),
      { timeout: 240_000 },
    );

    afterAll(sharedStack.destroy(), { timeout: 120_000 });

    describe("binding registration", () => {
      test.provider("both capabilities initialize in the runtime", (_stack) =>
        Effect.gen(function* () {
          const response = (yield* getJson("/bindings")) as { bound: string[] };
          expect(response.bound).toHaveLength(2);
        }),
      );
    });

    describe("GetLifecyclePolicy", () => {
      test.provider(
        "reads the bound policy's detail (injected policy id)",
        (_stack) =>
          Effect.gen(function* () {
            const response = (yield* getJson("/policy")) as {
              policyId: string;
              state: string;
              policyType: string;
            };
            expect(response.policyId).toMatch(/^policy-/);
            expect(response.state).toBe("DISABLED");
            expect(response.policyType).toBe("EBS_SNAPSHOT_MANAGEMENT");
          }),
      );
    });

    describe("GetLifecyclePolicies", () => {
      test.provider(
        "enumerates the account's policies including the fixture's",
        (_stack) =>
          Effect.gen(function* () {
            const policy = (yield* getJson("/policy")) as { policyId: string };
            const response = (yield* getJson("/policies")) as {
              ids: string[];
            };
            expect(response.ids).toContain(policy.policyId);
          }),
      );
    });

    describe(
      "consumePolicyEvents",
      { 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 consumePolicyEvents
              // 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);
            }),
        );
      },
    );
  },
);