Crear y enviar un trabajo por lotes de muestra que ejecute una secuencia de comandos y especifique una plantilla de instancias existente para definir sus requisitos de VM Después de enviar el trabajo, Batch lo pone en cola, programa y ejecuta automáticamente el trabajo en las VMs de Compute Engine que coinciden con la plantilla de instancias que especificaste.
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Para obtener documentación en la que se incluye esta muestra de código, consulta lo siguiente:
Muestra de código
C++
Para obtener más información, consulta la documentación de referencia de la API de Batch C++.
Para autenticarte en Batch, configura las credenciales predeterminadas de la aplicación. Si deseas obtener más información, consulta Configura la autenticación para un entorno de desarrollo local.
#include "google/cloud/batch/v1/batch_client.h"
[](std::string const& project_id, std::string const& location_id,
std::string const& job_id, std::string const& template_name) {
// Initialize the request; start with the fields that depend on the sample
// input.
google::cloud::batch::v1::CreateJobRequest request;
request.set_parent("projects/" + project_id + "/locations/" + location_id);
request.set_job_id(job_id);
// Most of the job description is fixed in this example; use a string to
// initialize it, and then override the template name.
auto constexpr kText = R"pb(
task_groups {
task_count: 4
task_spec {
compute_resource { cpu_milli: 500 memory_mib: 16 }
max_retry_count: 2
max_run_duration { seconds: 3600 }
runnables {
script {
text: "echo Hello world! This is task ${BATCH_TASK_INDEX}. This job has a total of ${BATCH_TASK_COUNT} tasks."
}
}
}
}
labels { key: "env" value: "testing" }
labels { key: "type" value: "script" }
logs_policy { destination: CLOUD_LOGGING }
)pb";
auto* job = request.mutable_job();
if (!google::protobuf::TextFormat::ParseFromString(kText, job)) {
throw std::runtime_error("Error parsing Job description");
}
job->mutable_allocation_policy()->add_instances()->set_instance_template(
template_name);
// Create a client and issue the request.
auto client = google::cloud::batch_v1::BatchServiceClient(
google::cloud::batch_v1::MakeBatchServiceConnection());
auto response = client.CreateJob(request);
if (!response) throw std::move(response).status();
std::cout << "Job : " << response->DebugString() << "\n";
}Go
Para obtener más información, consulta la documentación de referencia de la API de Batch Go.
Para autenticarte en Batch, configura las credenciales predeterminadas de la aplicación. Si deseas obtener más información, consulta Configura la autenticación para un entorno de desarrollo local.
import (
"context"
"fmt"
"io"
batch "cloud.google.com/go/batch/apiv1"
batchpb "google.golang.org/genproto/googleapis/cloud/batch/v1"
durationpb "google.golang.org/protobuf/types/known/durationpb"
)
// Creates and runs a job that executes the specified script
func createScriptJobWithTemplate(w io.Writer, projectID, region, jobName, templateLink string) error {
// projectID := "your_project_id"
// region := "us-central1"
// jobName := "some-job"
/* A link to an existing Instance Template. Acceptable formats:
* "projects/{project_id}/global/instanceTemplates/{template_name}"
* "{template_name}" - if the template is defined in the same project as used to create the Job.
*/
// template_link := "my-instance-template"
ctx := context.Background()
batchClient, err := batch.NewClient(ctx)
if err != nil {
return fmt.Errorf("NewClient: %w", err)
}
defer batchClient.Close()
// Define what will be done as part of the job.
command := &batchpb.Runnable_Script_Text{
Text: "echo Hello world! This is task ${BATCH_TASK_INDEX}. This job has a total of ${BATCH_TASK_COUNT} tasks.",
}
// We can specify what resources are requested by each task.
resources := &batchpb.ComputeResource{
// CpuMilli is milliseconds per cpu-second. This means the task requires 2 whole CPUs.
CpuMilli: 2000,
MemoryMib: 16,
}
taskSpec := &batchpb.TaskSpec{
Runnables: []*batchpb.Runnable{{
Executable: &batchpb.Runnable_Script_{
Script: &batchpb.Runnable_Script{Command: command},
},
}},
ComputeResource: resources,
MaxRunDuration: &durationpb.Duration{
Seconds: 3600,
},
MaxRetryCount: 2,
}
// Tasks are grouped inside a job using TaskGroups.
taskGroups := []*batchpb.TaskGroup{
{
TaskCount: 4,
TaskSpec: taskSpec,
},
}
// Policies are used to define on what kind of virtual machines the tasks will run on.
// In this case, we are going to use an Instance Template that defines the VM.
allocationPolicy := &batchpb.AllocationPolicy{
Instances: []*batchpb.AllocationPolicy_InstancePolicyOrTemplate{{
PolicyTemplate: &batchpb.AllocationPolicy_InstancePolicyOrTemplate_InstanceTemplate{
InstanceTemplate: templateLink,
},
}},
}
// We use Cloud Logging as it's an out of the box available option
logsPolicy := &batchpb.LogsPolicy{
Destination: batchpb.LogsPolicy_CLOUD_LOGGING,
}
jobLabels := map[string]string{"env": "testing", "type": "script"}
// The job's parent is the region in which the job will run
parent := fmt.Sprintf("projects/%s/locations/%s", projectID, region)
job := batchpb.Job{
TaskGroups: taskGroups,
AllocationPolicy: allocationPolicy,
Labels: jobLabels,
LogsPolicy: logsPolicy,
}
req := &batchpb.CreateJobRequest{
Parent: parent,
JobId: jobName,
Job: &job,
}
created_job, err := batchClient.CreateJob(ctx, req)
if err != nil {
return fmt.Errorf("unable to create job: %w", err)
}
fmt.Fprintf(w, "Job created: %v\n", created_job)
return nil
}
Java
Para obtener más información, consulta la documentación de referencia de la API de Batch Java.
Para autenticarte en Batch, configura las credenciales predeterminadas de la aplicación. Si deseas obtener más información, consulta Configura la autenticación para un entorno de desarrollo local.
import com.google.cloud.batch.v1.AllocationPolicy;
import com.google.cloud.batch.v1.AllocationPolicy.InstancePolicyOrTemplate;
import com.google.cloud.batch.v1.BatchServiceClient;
import com.google.cloud.batch.v1.ComputeResource;
import com.google.cloud.batch.v1.CreateJobRequest;
import com.google.cloud.batch.v1.Job;
import com.google.cloud.batch.v1.LogsPolicy;
import com.google.cloud.batch.v1.LogsPolicy.Destination;
import com.google.cloud.batch.v1.Runnable;
import com.google.cloud.batch.v1.Runnable.Script;
import com.google.cloud.batch.v1.TaskGroup;
import com.google.cloud.batch.v1.TaskSpec;
import com.google.protobuf.Duration;
import java.io.IOException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
public class CreateWithTemplate {
public static void main(String[] args)
throws IOException, ExecutionException, InterruptedException, TimeoutException {
// TODO(developer): Replace these variables before running the sample.
// Project ID or project number of the Cloud project you want to use.
String projectId = "YOUR_PROJECT_ID";
// 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
String region = "europe-central2";
// The name of the job that will be created.
// It needs to be unique for each project and region pair.
String jobName = "JOB_NAME";
// A link to an existing Instance Template. Acceptable formats:
// * "projects/{projectId}/global/instanceTemplates/{templateName}"
// * "{templateName}" - if the template is defined in the same project
// as used to create the Job.
String templateLink = "TEMPLATE_LINK";
createWithTemplate(projectId, region, jobName, templateLink);
}
// This method shows how to create a sample Batch Job that will run
// a simple command on Cloud Compute instances created using a provided Template.
public static void createWithTemplate(String projectId, String region, String jobName,
String templateLink)
throws IOException, ExecutionException, InterruptedException, TimeoutException {
// Initialize client that will be used to send requests. This client only needs to be created
// once, and can be reused for multiple requests. After completing all of your requests, call
// the `batchServiceClient.close()` method on the client to safely
// clean up any remaining background resources.
try (BatchServiceClient batchServiceClient = BatchServiceClient.create()) {
// Define what will be done as part of the job.
Runnable runnable =
Runnable.newBuilder()
.setScript(
Script.newBuilder()
.setText(
"echo Hello world! This is task ${BATCH_TASK_INDEX}. "
+ "This job has a total of ${BATCH_TASK_COUNT} tasks.")
// You can also run a script from a file. Just remember, that needs to be a
// script that's already on the VM that will be running the job.
// Using setText() and setPath() is mutually exclusive.
// .setPath("/tmp/test.sh")
.build())
.build();
// We can specify what resources are requested by each task.
ComputeResource computeResource =
ComputeResource.newBuilder()
// In milliseconds per cpu-second. This means the task requires 2 whole CPUs.
.setCpuMilli(2000)
// In MiB.
.setMemoryMib(16)
.build();
TaskSpec task =
TaskSpec.newBuilder()
// Jobs can be divided into tasks. In this case, we have only one task.
.addRunnables(runnable)
.setComputeResource(computeResource)
.setMaxRetryCount(2)
.setMaxRunDuration(Duration.newBuilder().setSeconds(3600).build())
.build();
// Tasks are grouped inside a job using TaskGroups.
// Currently, it's possible to have only one task group.
TaskGroup taskGroup = TaskGroup.newBuilder().setTaskCount(4).setTaskSpec(task).build();
// 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 an instance template that defines all the
// required parameters.
AllocationPolicy allocationPolicy =
AllocationPolicy.newBuilder()
.addInstances(
InstancePolicyOrTemplate.newBuilder().setInstanceTemplate(templateLink).build())
.build();
Job job =
Job.newBuilder()
.addTaskGroups(taskGroup)
.setAllocationPolicy(allocationPolicy)
.putLabels("env", "testing")
.putLabels("type", "script")
// We use Cloud Logging as it's an out of the box available option.
.setLogsPolicy(
LogsPolicy.newBuilder().setDestination(Destination.CLOUD_LOGGING).build())
.build();
CreateJobRequest createJobRequest =
CreateJobRequest.newBuilder()
// The job's parent is the region in which the job will run.
.setParent(String.format("projects/%s/locations/%s", projectId, region))
.setJob(job)
.setJobId(jobName)
.build();
Job result =
batchServiceClient
.createJobCallable()
.futureCall(createJobRequest)
.get(5, TimeUnit.MINUTES);
System.out.printf("Successfully created the job: %s", result.getName());
}
}
}Node.js
Para obtener más información, consulta la documentación de referencia de la API de Batch Node.js.
Para autenticarte en Batch, configura las credenciales predeterminadas de la aplicación. Si deseas obtener más información, consulta Configura la autenticación para un entorno de desarrollo local.
/**
* TODO(developer): Uncomment and replace these variables before running the sample.
*/
// const projectId = 'YOUR_PROJECT_ID';
/**
* The region you want to the job to run in. The regions that support Batch are listed here:
* https://cloud.google.com/batch/docs/get-started#locations
*/
// const region = 'us-central-1';
/**
* The name of the job that will be created.
* It needs to be unique for each project and region pair.
*/
// const jobName = 'YOUR_JOB_NAME';
/**
* a link to an existing Instance Template. Acceptable formats:
* "projects/{project_id}/global/instanceTemplates/{template_name}"
* "{template_name}" - if the template is defined in the same project as used to create the Job.
*/
// const templateLink = 'YOUR_TEMPLATE'
// 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();
// Define what will be done as part of the job.
const task = new batch.TaskSpec();
const runnable = new batch.Runnable();
runnable.script = new batch.Runnable.Script();
runnable.script.text =
'echo Hello world! This is task ${BATCH_TASK_INDEX}. This job has a total of ${BATCH_TASK_COUNT} tasks.';
// You can also run a script from a file. Just remember, that needs to be a script that's
// already on the VM that will be running the job. Using runnable.script.text and runnable.script.path is mutually
// exclusive.
// runnable.script.path = '/tmp/test.sh'
task.runnables = [runnable];
// We can specify what resources are requested by each task.
const resources = new batch.ComputeResource();
resources.cpuMilli = 2000; // in milliseconds per cpu-second. This means the task requires 2 whole CPUs.
resources.memoryMib = 16;
task.computeResource = resources;
task.maxRetryCount = 2;
task.maxRunDuration = {seconds: 3600};
// Tasks are grouped inside a job using TaskGroups.
const group = new batch.TaskGroup();
group.taskCount = 4;
group.taskSpec = task;
// Policies are used to define on what kind of virtual machines the tasks will run on.
// In this case, we tell the system to use "e2-standard-4" machine type.
// Read more about machine types here: https://cloud.google.com/compute/docs/machine-types
const allocationPolicy = new batch.AllocationPolicy();
const instances = new batch.AllocationPolicy.InstancePolicyOrTemplate();
instances.instanceTemplate = templateLink;
allocationPolicy.instances = [instances];
const job = new batch.Job();
job.name = jobName;
job.taskGroups = [group];
job.allocationPolicy = allocationPolicy;
job.labels = {env: 'testing', type: 'script'};
// We use Cloud Logging as it's an option available out of the box
job.logsPolicy = new batch.LogsPolicy();
job.logsPolicy.destination = batch.LogsPolicy.Destination.CLOUD_LOGGING;
// The job's parent is the project and region in which the job will run
const parent = `projects/${projectId}/locations/${region}`;
async function callCreateJob() {
// Construct request
const request = {
parent,
jobId: jobName,
job,
};
// Run request
const response = await batchClient.createJob(request);
console.log(response);
}
callCreateJob();Python
Para obtener más información, consulta la documentación de referencia de la API de Batch Python.
Para autenticarte en Batch, configura las credenciales predeterminadas de la aplicación. Si deseas obtener más información, consulta Configura la autenticación para un entorno de desarrollo local.
from google.cloud import batch_v1
def create_script_job_with_template(
project_id: str, region: str, job_name: str, template_link: str
) -> batch_v1.Job:
"""
This method shows how to create a sample Batch Job that will run
a simple command on Cloud Compute instances created using a provided Template.
Args:
project_id: project ID or project number of the Cloud project you want to use.
region: 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
job_name: the name of the job that will be created.
It needs to be unique for each project and region pair.
template_link: a link to an existing Instance Template. Acceptable formats:
* "projects/{project_id}/global/instanceTemplates/{template_name}"
* "{template_name}" - if the template is defined in the same project as used to create the Job.
Returns:
A job object representing the job created.
"""
client = batch_v1.BatchServiceClient()
# Define what will be done as part of the job.
task = batch_v1.TaskSpec()
runnable = batch_v1.Runnable()
runnable.script = batch_v1.Runnable.Script()
runnable.script.text = "echo Hello world! This is task ${BATCH_TASK_INDEX}. This job has a total of ${BATCH_TASK_COUNT} tasks."
# You can also run a script from a file. Just remember, that needs to be a script that's
# already on the VM that will be running the job. Using runnable.script.text and runnable.script.path is mutually
# exclusive.
# runnable.script.path = '/tmp/test.sh'
task.runnables = [runnable]
# We can specify what resources are requested by each task.
resources = batch_v1.ComputeResource()
resources.cpu_milli = 2000 # in milliseconds per cpu-second. This means the task requires 2 whole CPUs.
resources.memory_mib = 16
task.compute_resource = resources
task.max_retry_count = 2
task.max_run_duration = "3600s"
# Tasks are grouped inside a job using TaskGroups.
# Currently, it's possible to have only one task group.
group = batch_v1.TaskGroup()
group.task_count = 4
group.task_spec = 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 an instance template that defines all the
# required parameters.
allocation_policy = batch_v1.AllocationPolicy()
instances = batch_v1.AllocationPolicy.InstancePolicyOrTemplate()
instances.instance_template = template_link
allocation_policy.instances = [instances]
job = batch_v1.Job()
job.task_groups = [group]
job.allocation_policy = allocation_policy
job.labels = {"env": "testing", "type": "script"}
# We use Cloud Logging as it's an out of the box available option
job.logs_policy = batch_v1.LogsPolicy()
job.logs_policy.destination = batch_v1.LogsPolicy.Destination.CLOUD_LOGGING
create_request = batch_v1.CreateJobRequest()
create_request.job = job
create_request.job_id = job_name
# The job's parent is the region in which the job will run
create_request.parent = f"projects/{project_id}/locations/{region}"
return client.create_job(create_request)
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