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# Buat Jadwal Pemantauan untuk Titik Akhir Real-time dengan Sumber Daya CloudFormation Kustom
<a name="model-monitor-cloudformation-monitoring-schedules"></a>

Jika Anda menggunakan titik akhir real-time, Anda dapat menggunakan sumber daya CloudFormation khusus untuk membuat jadwal pemantauan. Sumber daya kustom ada di Python. Untuk menerapkannya, lihat Penerapan [Python Lambda](https://docs.aws.amazon.com/lambda/latest/dg/lambda-python-how-to-create-deployment-package.html).

## Sumber Daya Kustom
<a name="model-monitor-cloudformation-custom-resource"></a>

Mulailah dengan menambahkan sumber daya khusus ke CloudFormation template Anda. Ini menunjuk ke AWS Lambda fungsi yang Anda buat di langkah berikutnya. 

Sumber daya ini memungkinkan Anda untuk menyesuaikan parameter untuk jadwal pemantauan Anda dapat menambah atau menghapus lebih banyak parameter dengan memodifikasi CloudFormation sumber daya dan fungsi Lambda dalam sumber daya contoh berikut.

```
{
    "AWSTemplateFormatVersion": "2010-09-09",
    "Resources": {
        "MonitoringSchedule": {
            "Type": "Custom::MonitoringSchedule",
            "Version": "1.0",
            "Properties": {
                "ServiceToken": "arn:aws:lambda:us-west-2:111111111111:function:lambda-name",
                "ScheduleName": "YourScheduleName",
                "EndpointName": "YourEndpointName",
                "BaselineConstraintsUri": "s3://your-baseline-constraints/constraints.json",
                "BaselineStatisticsUri": "s3://your-baseline-stats/statistics.json",
                "PostAnalyticsProcessorSourceUri": "s3://your-post-processor/postprocessor.py",
                "RecordPreprocessorSourceUri": "s3://your-preprocessor/preprocessor.py",
                "InputLocalPath": "/opt/ml/processing/endpointdata",
                "OutputLocalPath": "/opt/ml/processing/localpath",
                "OutputS3URI": "s3://your-output-uri",
                "ImageURI": "111111111111.dkr.ecr.us-west-2.amazonaws.com/your-image",
                "ScheduleExpression": "cron(0 * ? * * *)",
                "PassRoleArn": "arn:aws:iam::111111111111:role/AmazonSageMaker-ExecutionRole"
            }
        }
    }
}
```

## Kode Sumber Daya Kustom Lambda
<a name="model-monitor-cloudformation-lambda-custom-resource-code"></a>

Sumber daya CloudFormation kustom ini menggunakan AWS pustaka [Custom Resource Helper](https://github.com/aws-cloudformation/custom-resource-helper), yang dapat Anda instal dengan pip menggunakan. `pip install crhelper` 

Fungsi Lambda ini dipanggil oleh CloudFormation selama pembuatan dan penghapusan tumpukan. Fungsi Lambda ini bertanggung jawab untuk membuat dan menghapus jadwal pemantauan dan menggunakan parameter yang ditentukan dalam sumber daya khusus yang dijelaskan di bagian sebelumnya.

```
import boto3
import botocore
import logging

from crhelper import CfnResource
from botocore.exceptions import ClientError


logger = logging.getLogger(__name__)
sm = boto3.client('sagemaker')

# cfnhelper makes it easier to implement a CloudFormation custom resource
helper = CfnResource()

# CFN Handlers

def handler(event, context):
    helper(event, context)


@helper.create
def create_handler(event, context):
    """
    Called when CloudFormation custom resource sends the create event
    """
    create_monitoring_schedule(event)


@helper.delete
def delete_handler(event, context):
    """
    Called when CloudFormation custom resource sends the delete event
    """
    schedule_name = get_schedule_name(event)
    delete_monitoring_schedule(schedule_name)


@helper.poll_create
def poll_create(event, context):
    """
    Return true if the resource has been created and false otherwise so
    CloudFormation polls again.
    """
    schedule_name = get_schedule_name(event)
    logger.info('Polling for creation of schedule: %s', schedule_name)
    return is_schedule_ready(schedule_name)

@helper.update
def noop():
    """
    Not currently implemented but crhelper will throw an error if it isn't added
    """
    pass

# Helper Functions

def get_schedule_name(event):
    return event['ResourceProperties']['ScheduleName']

def create_monitoring_schedule(event):
    schedule_name = get_schedule_name(event)
    monitoring_schedule_config = create_monitoring_schedule_config(event)

    logger.info('Creating monitoring schedule with name: %s', schedule_name)

    sm.create_monitoring_schedule(
        MonitoringScheduleName=schedule_name,
        MonitoringScheduleConfig=monitoring_schedule_config)

def is_schedule_ready(schedule_name):
    is_ready = False

    schedule = sm.describe_monitoring_schedule(MonitoringScheduleName=schedule_name)
    status = schedule['MonitoringScheduleStatus']

    if status == 'Scheduled':
        logger.info('Monitoring schedule (%s) is ready', schedule_name)
        is_ready = True
    elif status == 'Pending':
        logger.info('Monitoring schedule (%s) still creating, waiting and polling again...', schedule_name)
    else:
        raise Exception('Monitoring schedule ({}) has unexpected status: {}'.format(schedule_name, status))

    return is_ready

def create_monitoring_schedule_config(event):
    props = event['ResourceProperties']

    return {
        "ScheduleConfig": {
            "ScheduleExpression": props["ScheduleExpression"],
        },
        "MonitoringJobDefinition": {
            "BaselineConfig": {
                "ConstraintsResource": {
                    "S3Uri": props['BaselineConstraintsUri'],
                },
                "StatisticsResource": {
                    "S3Uri": props['BaselineStatisticsUri'],
                }
            },
            "MonitoringInputs": [
                {
                    "EndpointInput": {
                        "EndpointName": props["EndpointName"],
                        "LocalPath": props["InputLocalPath"],
                    }
                }
            ],
            "MonitoringOutputConfig": {
                "MonitoringOutputs": [
                    {
                        "S3Output": {
                            "S3Uri": props["OutputS3URI"],
                            "LocalPath": props["OutputLocalPath"],
                        }
                    }
                ],
            },
            "MonitoringResources": {
                "ClusterConfig": {
                    "InstanceCount": 1,
                    "InstanceType": "ml.t3.medium",
                    "VolumeSizeInGB": 50,
                }
            },
            "MonitoringAppSpecification": {
                "ImageUri": props["ImageURI"],
                "RecordPreprocessorSourceUri": props['PostAnalyticsProcessorSourceUri'],
                "PostAnalyticsProcessorSourceUri": props['PostAnalyticsProcessorSourceUri'],
            },
            "StoppingCondition": {
                "MaxRuntimeInSeconds": 300
            },
            "RoleArn": props["PassRoleArn"],
        }
    }


def delete_monitoring_schedule(schedule_name):
    logger.info('Deleting schedule: %s', schedule_name)
    try:
        sm.delete_monitoring_schedule(MonitoringScheduleName=schedule_name)
    except ClientError as e:
        if e.response['Error']['Code'] == 'ResourceNotFound':
            logger.info('Resource not found, nothing to delete')
        else:
            logger.error('Unexpected error while trying to delete monitoring schedule')
            raise e
```