feat(api): add get execution endpoint

packages/backend/src/controllers/api/v1/executions/get-execution.ee.js

@@ -0,0 +1,16 @@
+import Execution from '../../../../models/execution.js';
+import { renderObject } from '../../../../helpers/renderer.js';
+
+export default async (request, response) => {
+  const execution = await Execution.query()
+    .withGraphFetched({
+      flow: {
+        steps: true,
+      },
+    })
+    .withSoftDeleted()
+    .findById(request.params.executionId)
+    .throwIfNotFound();
+
+  renderObject(response, execution);
+};

packages/backend/src/controllers/api/v1/executions/get-execution.ee.test.js

@@ -0,0 +1,66 @@
+import Crypto from 'node:crypto';
+import request from 'supertest';
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+import { createApiToken } from '../../../../../test/factories/api-token.js';
+import { createExecution } from '../../../../../test/factories/execution.js';
+import { createFlow } from '../../../../../test/factories/flow.js';
+import { createStep } from '../../../../../test/factories/step.js';
+import getExecutionMock from '../../../../../test/mocks/rest/api/v1/executions/get-execution.js';
+import app from '../../../../app.js';
+import * as license from '../../../../helpers/license.ee.js';
+
+describe('GET /api/v1/executions/:executionId', () => {
+  let token;
+
+  beforeEach(async () => {
+    vi.spyOn(license, 'hasValidLicense').mockResolvedValue(true);
+
+    token = (await createApiToken()).token;
+  });
+
+  it('should return the execution data', async () => {
+    const flow = await createFlow();
+
+    const stepOne = await createStep({
+      flowId: flow.id,
+      type: 'trigger',
+    });
+
+    const stepTwo = await createStep({
+      flowId: flow.id,
+      type: 'action',
+    });
+
+    const execution = await createExecution({
+      flowId: flow.id,
+    });
+
+    const response = await request(app)
+      .get(`/api/v1/executions/${execution.id}`)
+      .set('x-api-token', token)
+      .expect(200);
+
+    const expectedPayload = await getExecutionMock(execution, flow, [
+      stepOne,
+      stepTwo,
+    ]);
+
+    expect(response.body).toStrictEqual(expectedPayload);
+  });
+
+  it('should return not found response for not existing execution UUID', async () => {
+    const notExistingExcecutionUUID = Crypto.randomUUID();
+
+    await request(app)
+      .get(`/api/v1/executions/${notExistingExcecutionUUID}`)
+      .set('x-api-token', token)
+      .expect(404);
+  });
+
+  it('should return bad request response for invalid UUID', async () => {
+    await request(app)
+      .get('/api/v1/executions/invalidExecutionUUID')
+      .set('x-api-token', token)
+      .expect(400);
+  });
+});