test(fargate): add test for early Fargate task termination

Author: InesNi

packages/artillery/test/cloud-e2e/fargate/fixtures/sigterm.yml

@@ -0,0 +1,10 @@
+config:
+  target: http://asciiart.artillery.io:8080
+  phases:
+    - duration: 10m
+      arrivalRate: 1
+scenarios:
+  - name: load homepage
+    flow:
+      - get:
+          url: "/dino"

packages/artillery/test/cloud-e2e/fargate/sigterm-handle.test.js

@@ -0,0 +1,123 @@
+const { test, before, beforeEach } = require('tap');
+const { $ } = require('zx');
+const fs = require('fs');
+const got = require('got');
+const generateId = require('../../../lib/util/generate-id');
+const region = 'us-east-1';
+const AWS = require('aws-sdk');
+const ecs = new AWS.ECS({
+  apiVersion: '2014-11-13',
+  region
+});
+
+const { generateTmpReportPath, getTestTags } = require('../../helpers');
+const sleep = require('../../helpers/sleep');
+
+const {
+  checkForNegativeValues,
+  checkAggregateCounterSums
+} = require('../../helpers/expectations');
+
+const A9_PATH = process.env.A9_PATH || 'artillery';
+const baseTags = getTestTags(['type:acceptance']);
+
+before(async () => {
+  await $`${A9_PATH} -V`;
+});
+
+beforeEach(async (t) => {
+  $.verbose = true;
+  t.context.reportFilePath = generateTmpReportPath(t.name, 'json');
+});
+
+test('Correctly handles early task termination', async (t) => {
+  const scenarioPath = `${__dirname}/fixtures/sigterm.yml`;
+  process.env.ARTILLERY_TEST_RUN_ID = generateId('t');
+
+  let testRunProcess;
+  let exitCode;
+  let output;
+
+  function setTestRunInfo(info) {
+    exitCode = info?.exitCode;
+    output = info?.stdout;
+  }
+  // We run the test but do not await as we need to stop the Fargate task while the test is running
+  // We use the setTestRunInfo function for both resolve and reject cases of the testRunProcess promise (if Artillery exits early like it should, the promise will be rejected)
+  testRunProcess =
+    $`${A9_PATH} run-fargate ${scenarioPath} --output ${t.context.reportFilePath} --record --tags ${baseTags}`.then(
+      setTestRunInfo,
+      setTestRunInfo
+    );
+
+  // We use Artillery's Cloud API to get task ID and check if the test started
+  const testRunCloudEndpoint = `${process.env.ARTILLERY_CLOUD_ENDPOINT}/api/load-tests/${process.env.ARTILLERY_TEST_RUN_ID}`;
+
+  const maxRetry = 5;
+  const delay = 30000;
+  let retryNum = 0;
+  let res;
+  let testStarted;
+  while (!testStarted && retryNum <= maxRetry) {
+    await sleep(delay);
+    try {
+      res = await got(testRunCloudEndpoint, {
+        headers: {
+          'x-auth-token': process.env.ARTILLERY_CLOUD_API_KEY
+        },
+        throwHttpErrors: false
+      });
+    } catch (err) {
+      t.error(`Error fetching data from Artillery Cloud API: ${err}`);
+    }
+    // Make sure the workers have started before stopping the task
+    testStarted =
+      res?.body &&
+      JSON.parse(res.body).events?.some(
+        (event) => event.eventName === 'phaseStarted'
+      );
+    retryNum++;
+  }
+
+  const taskIds = JSON.parse(res.body).tasks;
+  taskIds.forEach(async (taskId) => {
+    console.log('Stopping task: ', taskId);
+    try {
+      const stoppedTask = await ecs
+        .stopTask({ task: taskId, cluster: 'artilleryio-cluster' })
+        .promise();
+    } catch (err) {
+      t.error(`Error calling ecs.stopTask: ${err}`);
+    }
+  });
+
+  // If testRunProcess takes longer than 60sec to finish, it means the process didn't exit early.
+
+  const timeout = new Promise((resolve) => {
+    setTimeout(() => {
+      resolve(
+        new Error('Artillery test run did not exit within 60s as expected.')
+      );
+    }, 60000);
+  });
+
+  try {
+    await Promise.race([testRunProcess, timeout]);
+  } catch (err) {
+    t.fail(err.message);
+  }
+
+  const reportExists = fs.existsSync(t.context.reportFilePath);
+  t.ok(exitCode && output, 'Artillery should exit early when task is stopped');
+  t.equal(exitCode, 7, 'Exit code should be 7');
+  t.ok(output.includes('Summary report'), 'Should log the summary report');
+  t.ok(reportExists, 'Should generate report file');
+
+  if (reportExists) {
+    const report = JSON.parse(
+      fs.readFileSync(t.context.reportFilePath, 'utf8')
+    );
+    checkForNegativeValues(t, report);
+    checkAggregateCounterSums(t, report);
+  }
+});