feat: batch_labels_allocation (#3785)

* feat: batch_labels_allocation

* chore: update copyright year

---------

Co-authored-by: Tony Pujals <[email protected]>
Co-authored-by: Tony Pujals <[email protected]>

Author: gryczj

batch/create/create_batch_labels_allocation.js

@@ -0,0 +1,125 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+'use strict';
+
+async function main() {
+  // [START batch_labels_allocation]
+  // Imports the Batch library
+  const batchLib = require('@google-cloud/batch');
+  const batch = batchLib.protos.google.cloud.batch.v1;
+
+  // Instantiates a client
+  const batchClient = new batchLib.v1.BatchServiceClient();
+
+  /**
+   * TODO(developer): Update these variables before running the sample.
+   */
+  const projectId = await batchClient.getProjectId();
+  // Name of the region you want to use to run the job. Regions that are
+  // available for Batch are listed on: https://cloud.google.com/batch/docs/get-started#locations
+  const region = 'europe-central2';
+  // The name of the job that will be created.
+  // It needs to be unique for each project and region pair.
+  const jobName = 'batch-labels-allocation-job';
+  // Name of the label1 to be applied for your Job.
+  const labelName1 = 'vm_label_name_1';
+  // Value for the label1 to be applied for your Job.
+  const labelValue1 = 'vmLabelValue1';
+  // Name of the label2 to be applied for your Job.
+  const labelName2 = 'vm_label_name_2';
+  // Value for the label2 to be applied for your Job.
+  const labelValue2 = 'vmLabelValue2';
+
+  // Define what will be done as part of the job.
+  const runnable = new batch.Runnable({
+    script: new batch.Runnable.Script({
+      commands: ['-c', 'echo Hello world! This is task ${BATCH_TASK_INDEX}.'],
+    }),
+  });
+
+  // Specify what resources are requested by each task.
+  const computeResource = new batch.ComputeResource({
+    // In milliseconds per cpu-second. This means the task requires 50% of a single CPUs.
+    cpuMilli: 500,
+    // In MiB.
+    memoryMib: 16,
+  });
+
+  const task = new batch.TaskSpec({
+    runnables: [runnable],
+    computeResource,
+    maxRetryCount: 2,
+    maxRunDuration: {seconds: 3600},
+  });
+
+  // Tasks are grouped inside a job using TaskGroups.
+  const group = new batch.TaskGroup({
+    taskCount: 3,
+    taskSpec: task,
+  });
+
+  // Policies are used to define on what kind of virtual machines the tasks will run on.
+  // In this case, we tell the system to use "e2-standard-4" machine type.
+  // Read more about machine types here: https://cloud.google.com/compute/docs/machine-types
+  const instancePolicy = new batch.AllocationPolicy.InstancePolicy({
+    machineType: 'e2-standard-4',
+  });
+
+  const allocationPolicy = new batch.AllocationPolicy({
+    instances: [{policy: instancePolicy}],
+  });
+  // Labels and their value to be applied to the job and its resources.
+  allocationPolicy.labels[labelName1] = labelValue1;
+  allocationPolicy.labels[labelName2] = labelValue2;
+
+  const job = new batch.Job({
+    name: jobName,
+    taskGroups: [group],
+    labels: {env: 'testing', type: 'script'},
+    allocationPolicy,
+    // We use Cloud Logging as it's an option available out of the box
+    logsPolicy: new batch.LogsPolicy({
+      destination: batch.LogsPolicy.Destination.CLOUD_LOGGING,
+    }),
+  });
+
+  // The job's parent is the project and region in which the job will run
+  const parent = `projects/${projectId}/locations/${region}`;
+
+  async function callCreateBatchLabelsAllocation() {
+    // Construct request
+    const request = {
+      parent,
+      jobId: jobName,
+      job,
+    };
+
+    // Run request
+    const [response] = await batchClient.createJob(request);
+    console.log(JSON.stringify(response));
+  }
+
+  callCreateBatchLabelsAllocation();
+  // [END batch_labels_allocation]
+}
+
+process.on('unhandledRejection', err => {
+  console.error(err.message);
+  process.exitCode = 1;
+});
+
+main();

batch/test/create_batch_labels_allocation.test.js

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+'use strict';
+
+const path = require('path');
+const assert = require('assert');
+const {describe, it} = require('mocha');
+const cp = require('child_process');
+const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
+const cwd = path.join(__dirname, '..');
+const {BatchServiceClient} = require('@google-cloud/batch').v1;
+const {deleteJob} = require('./batchClient_operations');
+const batchClient = new BatchServiceClient();
+
+describe('Create batch labels allocation', async () => {
+  const jobName = 'batch-labels-allocation-job';
+  const region = 'europe-central2';
+  let projectId;
+
+  before(async () => {
+    projectId = await batchClient.getProjectId();
+  });
+
+  after(async () => {
+    await deleteJob(batchClient, projectId, region, jobName);
+  });
+
+  it('should create a new job with allocation policy labels', async () => {
+    const expectedAllocationLabels = {
+      'batch-job-id': 'batch-labels-allocation-job',
+      vm_label_name_1: 'vmLabelValue1',
+      vm_label_name_2: 'vmLabelValue2',
+    };
+
+    const response = JSON.parse(
+      execSync('node ./create/create_batch_labels_allocation.js', {
+        cwd,
+      })
+    );
+
+    assert.deepEqual(
+      response.allocationPolicy.labels,
+      expectedAllocationLabels
+    );
+  });
+});