t3-code-android-nightly/.repos/alchemy-effect/packages/alchemy/test/AWS/DevOpsGuru/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 * as lambda from "@distilled.cloud/aws/lambda";
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 DevOpsGuruTestFunctionLive, { DevOpsGuruTestFunction } from "./handler";

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

// 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;
}> {}

class FunctionStillExists extends Data.TaggedError("FunctionStillExists") {}

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

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

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

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

    afterAll(
      Effect.gen(function* () {
        yield* sharedStack.destroy();
        // Assert gone (skipped when beforeAll never got far enough to deploy):
        // the fixture Lambda answers with the typed not-found tag, and the
        // event-source's EventBridge rule no longer targets it. afterAll runs
        // outside `test.provider`'s layer, so raw distilled calls need the
        // provider layer (credentials, region) supplied explicitly.
        if (functionArn) {
          yield* Core.withProviders(
            Effect.gen(function* () {
              yield* lambda.getFunction({ FunctionName: functionArn }).pipe(
                Effect.flatMap(() => Effect.fail(new FunctionStillExists())),
                Effect.retry({
                  while: (error) => error._tag === "FunctionStillExists",
                  schedule: Schedule.exponential("500 millis"),
                  times: 8,
                }),
                Effect.catchTag("ResourceNotFoundException", () => Effect.void),
              );
              const { RuleNames } = yield* eventbridge.listRuleNamesByTarget({
                TargetArn: functionArn,
              });
              expect(RuleNames ?? []).toHaveLength(0);
            }),
            testOptions,
            sharedStack.name,
          );
        }
      }),
      { timeout: 120_000 },
    );

    describe("binding registration", () => {
      test.provider("all 22 capabilities initialize in the runtime", (_stack) =>
        Effect.gen(function* () {
          const response = (yield* getJson("/bindings")) as { bound: string[] };
          expect(response.bound).toHaveLength(22);
          expect(response.bound).toContain("describeAccountHealth");
          expect(response.bound).toContain("searchInsights");
          expect(response.bound).toContain("putFeedback");
        }),
      );
    });

    describe("DescribeAccountHealth", () => {
      test.provider("reads the account's insight counters", (_stack) =>
        Effect.gen(function* () {
          const response = (yield* getJson("/health")) as {
            openReactiveInsights: number;
            openProactiveInsights: number;
            metricsAnalyzed: number;
          };
          expect(response.openReactiveInsights).toBeGreaterThanOrEqual(0);
          expect(response.openProactiveInsights).toBeGreaterThanOrEqual(0);
          expect(response.metricsAnalyzed).toBeGreaterThanOrEqual(0);
        }),
      );
    });

    describe("DescribeAccountOverview", () => {
      test.provider("summarizes the trailing 24 hours", (_stack) =>
        Effect.gen(function* () {
          const response = (yield* getJson("/overview")) as {
            reactiveInsights: number;
            proactiveInsights: number;
          };
          expect(response.reactiveInsights).toBeGreaterThanOrEqual(0);
          expect(response.proactiveInsights).toBeGreaterThanOrEqual(0);
        }),
      );
    });

    describe("ListInsights", () => {
      test.provider("lists ongoing reactive insights", (_stack) =>
        Effect.gen(function* () {
          const response = (yield* getJson("/insights")) as { count: number };
          expect(response.count).toBeGreaterThanOrEqual(0);
        }),
      );
    });

    describe("SearchInsights", () => {
      test.provider("searches reactive insights by time range", (_stack) =>
        Effect.gen(function* () {
          const response = (yield* getJson("/search")) as { count: number };
          expect(response.count).toBeGreaterThanOrEqual(0);
        }),
      );
    });

    describe("DescribeResourceCollectionHealth", () => {
      test.provider("reads per-stack coverage health", (_stack) =>
        Effect.gen(function* () {
          const response = (yield* getJson("/collection-health")) as {
            stacks: number;
          };
          expect(response.stacks).toBeGreaterThanOrEqual(0);
        }),
      );
    });

    describe("ListMonitoredResources", () => {
      test.provider(
        "lists analyzed resources (typed not-found -> zero coverage)",
        (_stack) =>
          Effect.gen(function* () {
            const response = (yield* getJson("/monitored")) as {
              count: number;
            };
            expect(response.count).toBeGreaterThanOrEqual(0);
          }),
      );
    });

    describe("consumeInsightEvents", () => {
      test.provider(
        "the deploy created an EventBridge rule targeting the function",
        (_stack) =>
          Effect.gen(function* () {
            // Out-of-band via distilled: the fixture's consumeInsightEvents
            // 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);
          }),
      );
    });
  },
);