File size: 3,555 Bytes
aec3094 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 | import { Container } from '@n8n/di';
import { TaskBrokerWsServer } from '@/task-runners/task-broker/task-broker-ws-server';
import { TaskBroker } from '@/task-runners/task-broker/task-broker.service';
import { TaskRunnerProcess } from '@/task-runners/task-runner-process';
import { TaskRunnerProcessRestartLoopDetector } from '@/task-runners/task-runner-process-restart-loop-detector';
import { retryUntil } from '@test-integration/retry-until';
import { setupBrokerTestServer } from '@test-integration/utils/task-broker-test-server';
describe('TaskRunnerProcess', () => {
const { config, server: taskRunnerServer } = setupBrokerTestServer({
mode: 'internal',
});
const runnerProcess = Container.get(TaskRunnerProcess);
const taskBroker = Container.get(TaskBroker);
const taskRunnerService = Container.get(TaskBrokerWsServer);
beforeAll(async () => {
await taskRunnerServer.start();
// Set the port to the actually used port
config.port = taskRunnerServer.port;
});
afterAll(async () => {
await taskRunnerServer.stop();
});
afterEach(async () => {
await runnerProcess.stop();
});
const getNumConnectedRunners = () => taskRunnerService.runnerConnections.size;
const getNumRegisteredRunners = () => taskBroker.getKnownRunners().size;
it('should start and connect the task runner', async () => {
// Act
await runnerProcess.start();
// Assert
expect(runnerProcess.isRunning).toBeTruthy();
// Wait until the runner has connected
await retryUntil(() => expect(getNumConnectedRunners()).toBe(1));
expect(getNumRegisteredRunners()).toBe(1);
});
it('should stop an disconnect the task runner', async () => {
// Arrange
await runnerProcess.start();
// Wait until the runner has connected
await retryUntil(() => expect(getNumConnectedRunners()).toBe(1));
expect(getNumRegisteredRunners()).toBe(1);
// Act
await runnerProcess.stop();
// Assert
// Wait until the runner has disconnected
await retryUntil(() => expect(getNumConnectedRunners()).toBe(0));
expect(runnerProcess.isRunning).toBeFalsy();
expect(getNumRegisteredRunners()).toBe(0);
});
it('should restart the task runner if it exits', async () => {
// Arrange
await runnerProcess.start();
// Wait until the runner has connected
await retryUntil(() => expect(getNumConnectedRunners()).toBe(1));
const processId = runnerProcess.pid;
// Act
// @ts-expect-error private property
runnerProcess.process?.kill('SIGKILL');
// Wait until the runner has exited
await runnerProcess.runPromise;
// Assert
// Wait until the runner has connected again
await retryUntil(() => expect(getNumConnectedRunners()).toBe(1));
expect(getNumConnectedRunners()).toBe(1);
expect(getNumRegisteredRunners()).toBe(1);
expect(runnerProcess.pid).not.toBe(processId);
});
it('should work together with restart loop detector', async () => {
// Arrange
const restartLoopDetector = new TaskRunnerProcessRestartLoopDetector(runnerProcess);
let restartLoopDetectedEventEmitted = false;
restartLoopDetector.once('restart-loop-detected', () => {
restartLoopDetectedEventEmitted = true;
});
// Act
await runnerProcess.start();
// Simulate a restart loop
for (let i = 0; i < 5; i++) {
await retryUntil(() => {
expect(runnerProcess.pid).toBeDefined();
});
// @ts-expect-error private property
runnerProcess.process?.kill();
await new Promise((resolve) => {
runnerProcess.once('exit', resolve);
});
}
// Assert
expect(restartLoopDetectedEventEmitted).toBe(true);
});
});
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