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# Bekerja dengan CloudWatch Alarm
<a name="examples-cloudwatch-create-alarms"></a>

## Prasyarat
<a name="codeExamplePrereq"></a>

Sebelum Anda mulai, kami sarankan Anda membaca [Memulai menggunakan AWS SDK untuk C\$1\$1](getting-started.md). 

Unduh kode contoh dan buat solusinya seperti yang dijelaskan dalam[Memulai contoh kode](getting-started-code-examples.md). 

Untuk menjalankan contoh, profil pengguna yang digunakan kode Anda untuk membuat permintaan harus memiliki izin yang tepat AWS (untuk layanan dan tindakan). Untuk informasi selengkapnya, lihat [Menyediakan AWS kredensi](credentials.md).

## Buat Alarm
<a name="create-an-alarm"></a>

Untuk membuat alarm berdasarkan CloudWatch metrik, panggil `PutMetricAlarm` fungsi dengan [PutMetricAlarmRequest](https://docs.aws.amazon.com/sdk-for-cpp/latest/api/aws-cpp-sdk-monitoring/html/class_aws_1_1_cloud_watch_1_1_model_1_1_put_metric_alarm_request.html)diisi dengan kondisi alarm. CloudWatchClient

 **Termasuk** 

```
#include <aws/core/Aws.h>
#include <aws/monitoring/CloudWatchClient.h>
#include <aws/monitoring/model/PutMetricAlarmRequest.h>
#include <iostream>
```

 **Kode** 

```
        Aws::CloudWatch::CloudWatchClient cw;
        Aws::CloudWatch::Model::PutMetricAlarmRequest request;
        request.SetAlarmName(alarm_name);
        request.SetComparisonOperator(
            Aws::CloudWatch::Model::ComparisonOperator::GreaterThanThreshold);
        request.SetEvaluationPeriods(1);
        request.SetMetricName("CPUUtilization");
        request.SetNamespace("AWS/EC2");
        request.SetPeriod(60);
        request.SetStatistic(Aws::CloudWatch::Model::Statistic::Average);
        request.SetThreshold(70.0);
        request.SetActionsEnabled(false);
        request.SetAlarmDescription("Alarm when server CPU exceeds 70%");
        request.SetUnit(Aws::CloudWatch::Model::StandardUnit::Seconds);

        Aws::CloudWatch::Model::Dimension dimension;
        dimension.SetName("InstanceId");
        dimension.SetValue(instanceId);

        request.AddDimensions(dimension);

        auto outcome = cw.PutMetricAlarm(request);
        if (!outcome.IsSuccess())
        {
            std::cout << "Failed to create CloudWatch alarm:" <<
                outcome.GetError().GetMessage() << std::endl;
        }
        else
        {
            std::cout << "Successfully created CloudWatch alarm " << alarm_name
                << std::endl;
        }
```

Lihat [contoh lengkapnya](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/cloudwatch/put_metric_alarm.cpp).

## Daftar Alarm
<a name="list-alarms"></a>

Untuk membuat daftar CloudWatch alarm yang telah Anda buat, panggil `DescribeAlarms` fungsi dengan [DescribeAlarmsRequest](https://docs.aws.amazon.com/sdk-for-cpp/latest/api/aws-cpp-sdk-monitoring/html/class_aws_1_1_cloud_watch_1_1_model_1_1_describe_alarms_request.html)yang dapat Anda gunakan untuk mengatur opsi untuk hasilnya. CloudWatchClient

 **Termasuk** 

```
#include <aws/core/Aws.h>
#include <aws/monitoring/CloudWatchClient.h>
#include <aws/monitoring/model/DescribeAlarmsRequest.h>
#include <aws/monitoring/model/DescribeAlarmsResult.h>
#include <iomanip>
#include <iostream>
```

 **Kode** 

```
        Aws::CloudWatch::CloudWatchClient cw;
        Aws::CloudWatch::Model::DescribeAlarmsRequest request;
        request.SetMaxRecords(1);

        bool done = false;
        bool header = false;
        while (!done)
        {
            auto outcome = cw.DescribeAlarms(request);
            if (!outcome.IsSuccess())
            {
                std::cout << "Failed to describe CloudWatch alarms:" <<
                    outcome.GetError().GetMessage() << std::endl;
                break;
            }

            if (!header)
            {
                std::cout << std::left <<
                    std::setw(32) << "Name" <<
                    std::setw(64) << "Arn" <<
                    std::setw(64) << "Description" <<
                    std::setw(20) << "LastUpdated" <<
                    std::endl;
                header = true;
            }

            const auto &alarms = outcome.GetResult().GetMetricAlarms();
            for (const auto &alarm : alarms)
            {
                std::cout << std::left <<
                    std::setw(32) << alarm.GetAlarmName() <<
                    std::setw(64) << alarm.GetAlarmArn() <<
                    std::setw(64) << alarm.GetAlarmDescription() <<
                    std::setw(20) <<
                    alarm.GetAlarmConfigurationUpdatedTimestamp().ToGmtString(
                        SIMPLE_DATE_FORMAT_STR) <<
                    std::endl;
            }

            const auto &next_token = outcome.GetResult().GetNextToken();
            request.SetNextToken(next_token);
            done = next_token.empty();
        }
```

Daftar alarm dapat diperoleh dengan memanggil `getMetricAlarms` [DescribeAlarmsResult](https://docs.aws.amazon.com/sdk-for-cpp/latest/api/aws-cpp-sdk-monitoring/html/class_aws_1_1_cloud_watch_1_1_model_1_1_describe_alarms_result.html)yang dikembalikan oleh`DescribeAlarms`.

Hasilnya mungkin *paged.* Untuk mengambil batch hasil berikutnya, panggil `SetNextToken` objek permintaan asli dengan nilai kembali `GetNextToken` fungsi objek, dan meneruskan `DescribeAlarmsResult` objek permintaan yang dimodifikasi kembali ke `DescribeAlarms` panggilan lain.

**catatan**  
Anda juga dapat mengambil alarm untuk metrik tertentu dengan menggunakan fungsi CloudWatchClient's. `DescribeAlarmsForMetric` Penggunaannya mirip dengan`DescribeAlarms`.

Lihat [contoh lengkapnya](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/cloudwatch/describe_alarms.cpp).

## Hapus Alarm
<a name="delete-alarms"></a>

Untuk menghapus CloudWatch alarm, panggil `DeleteAlarms` fungsi dengan [DeleteAlarmsRequest](https://docs.aws.amazon.com/sdk-for-cpp/latest/api/aws-cpp-sdk-monitoring/html/class_aws_1_1_cloud_watch_1_1_model_1_1_delete_alarms_request.html)berisi satu atau beberapa nama alarm yang ingin Anda hapus. CloudWatchClient

 **Termasuk** 

```
#include <aws/core/Aws.h>
#include <aws/monitoring/CloudWatchClient.h>
#include <aws/monitoring/model/DeleteAlarmsRequest.h>
#include <iostream>
```

 **Kode** 

```
        Aws::CloudWatch::CloudWatchClient cw;
        Aws::CloudWatch::Model::DeleteAlarmsRequest request;
        request.AddAlarmNames(alarm_name);

        auto outcome = cw.DeleteAlarms(request);
        if (!outcome.IsSuccess())
        {
            std::cout << "Failed to delete CloudWatch alarm:" <<
                outcome.GetError().GetMessage() << std::endl;
        }
        else
        {
            std::cout << "Successfully deleted CloudWatch alarm " << alarm_name
                << std::endl;
        }
```

Lihat [contoh lengkapnya](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/cpp/example_code/cloudwatch/delete_alarm.cpp).

## Informasi Selengkapnya
<a name="more-information"></a>
+  [Membuat CloudWatch Alarm Amazon](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/AlarmThatSendsEmail.html) di CloudWatch Panduan Pengguna Amazon
+  [PutMetricAlarm](https://docs.aws.amazon.com/AmazonCloudWatch/latest/APIReference/PutMetricAlarm.html)di Referensi CloudWatch API Amazon
+  [DescribeAlarms](https://docs.aws.amazon.com/AmazonCloudWatch/latest/APIReference/DescribeAlarms.html)di Referensi CloudWatch API Amazon
+  [DeleteAlarms](https://docs.aws.amazon.com/AmazonCloudWatch/latest/APIReference/DeleteAlarms.html)di Referensi CloudWatch API Amazon