Doc AWS SDK Examples GitHub リポジトリには、他にも SDK の例があります。 [AWS](https://github.com/awsdocs/aws-doc-sdk-examples)

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# SDK for Kotlin を使用した CloudWatch の例
<a name="kotlin_1_cloudwatch_code_examples"></a>

次のコード例は、CloudWatch で AWS SDK for Kotlin を使用してアクションを実行し、一般的なシナリオを実装する方法を示しています。

*基本* は、重要なオペレーションをサービス内で実行する方法を示すコード例です。

*アクション*はより大きなプログラムからのコードの抜粋であり、コンテキスト内で実行する必要があります。アクションは個々のサービス機能を呼び出す方法を示していますが、コンテキスト内のアクションは、関連するシナリオで確認できます。

各例には完全なソースコードへのリンクが含まれており、コンテキスト内でコードを設定および実行する方法の手順を確認できます。

**Topics**
+ [はじめに](#get_started)
+ [基本](#basics)
+ [アクション](#actions)

## はじめに
<a name="get_started"></a>

### Hello CloudWatch
<a name="cloudwatch_Hello_kotlin_1_topic"></a>

次のコード例は、CloudWatch の使用を開始する方法を示しています。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。用例一覧を検索し、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。

```
/**
Before running this Kotlin code example, set up your development environment,
including your credentials.

For more information, see the following documentation topic:
https://docs.aws.amazon.com/sdk-for-kotlin/latest/developer-guide/setup.html
 */
suspend fun main(args: Array<String>) {
    val usage = """
        Usage:
           <namespace> 
        Where:
           namespace - The namespace to filter against (for example, AWS/EC2). 
    """

    if (args.size != 1) {
        println(usage)
        exitProcess(0)
    }

    val namespace = args[0]
    listAllMets(namespace)
}

suspend fun listAllMets(namespaceVal: String?) {
    val request =
        ListMetricsRequest {
            namespace = namespaceVal
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        cwClient
            .listMetricsPaginated(request)
            .transform { it.metrics?.forEach { obj -> emit(obj) } }
            .collect { obj ->
                println("Name is ${obj.metricName}")
                println("Namespace is ${obj.namespace}")
            }
    }
}
```
+  API の詳細については、「AWS SDK for Kotlin API リファレンス」の「[ListMetrics](https://sdk.amazonaws.com/kotlin/api/latest/index.html)」を参照してください。

## 基本
<a name="basics"></a>

### 基本を学ぶ
<a name="cloudwatch_GetStartedMetricsDashboardsAlarms_kotlin_1_topic"></a>

次のコード例は、以下の操作方法を示しています。
+ CloudWatch の名前空間とメトリクスを一覧表示します。
+ メトリクスと予想請求額の統計の取得
+ ダッシュボードの作成と更新
+ メトリクスの作成とデータの追加
+ アラームの作成/トリガーとアラーム履歴の表示
+ 異常ディテクターの追加
+ メトリクス画像を取得し、リソースをクリーンアップします。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。用例一覧を検索し、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。
CloudWatch の機能を実証するインタラクティブなシナリオを実行します。  

```
/**
 Before running this Kotlin code example, set up your development environment,
 including your credentials.

 For more information, see the following documentation topic:
 https://docs.aws.amazon.com/sdk-for-kotlin/latest/developer-guide/setup.html

 To enable billing metrics and statistics for this example, make sure billing alerts are enabled for your account:
 https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/monitor_estimated_charges_with_cloudwatch.html#turning_on_billing_metrics

 This Kotlin code example performs the following tasks:

 1. List available namespaces from Amazon CloudWatch. Select a namespace from the list.
 2. List available metrics within the selected namespace.
 3. Get statistics for the selected metric over the last day.
 4. Get CloudWatch estimated billing for the last week.
 5. Create a new CloudWatch dashboard with metrics.
 6. List dashboards using a paginator.
 7. Create a new custom metric by adding data for it.
 8. Add the custom metric to the dashboard.
 9. Create an alarm for the custom metric.
 10. Describe current alarms.
 11. Get current data for the new custom metric.
 12. Push data into the custom metric to trigger the alarm.
 13. Check the alarm state using the action DescribeAlarmsForMetric.
 14. Get alarm history for the new alarm.
 15. Add an anomaly detector for the custom metric.
 16. Describe current anomaly detectors.
 17. Get a metric image for the custom metric.
 18. Clean up the Amazon CloudWatch resources.
 */

val DASHES: String? = String(CharArray(80)).replace("\u0000", "-")

suspend fun main(args: Array<String>) {
    val usage = """
        Usage:
            <myDate> <costDateWeek> <dashboardName> <dashboardJson> <dashboardAdd> <settings> <metricImage>  

        Where:
            myDate - The start date to use to get metric statistics. (For example, 2023-01-11T18:35:24.00Z.) 
            costDateWeek - The start date to use to get AWS Billing and Cost Management statistics. (For example, 2023-01-11T18:35:24.00Z.) 
            dashboardName - The name of the dashboard to create. 
            dashboardJson - The location of a JSON file to use to create a dashboard. (See Readme file.) 
            dashboardAdd - The location of a JSON file to use to update a dashboard. (See Readme file.) 
            settings - The location of a JSON file from which various values are read. (See Readme file.) 
            metricImage - The location of a BMP file that is used to create a graph. 
    """

    if (args.size != 7) {
        println(usage)
        System.exit(1)
    }

    val myDate = args[0]
    val costDateWeek = args[1]
    val dashboardName = args[2]
    val dashboardJson = args[3]
    val dashboardAdd = args[4]
    val settings = args[5]
    var metricImage = args[6]
    val dataPoint = "10.0".toDouble()
    val inOb = Scanner(System.`in`)

    println(DASHES)
    println("Welcome to the Amazon CloudWatch example scenario.")
    println(DASHES)

    println(DASHES)
    println("1. List at least five available unique namespaces from Amazon CloudWatch. Select a CloudWatch namespace from the list.")
    val list: ArrayList<String> = listNameSpaces()
    for (z in 0..4) {
        println("    ${z + 1}. ${list[z]}")
    }

    var selectedNamespace: String
    var selectedMetrics = ""
    var num = inOb.nextLine().toInt()
    println("You selected $num")

    if (1 <= num && num <= 5) {
        selectedNamespace = list[num - 1]
    } else {
        println("You did not select a valid option.")
        exitProcess(1)
    }
    println("You selected $selectedNamespace")
    println(DASHES)

    println(DASHES)
    println("2. List available metrics within the selected namespace and select one from the list.")
    val metList = listMets(selectedNamespace)
    for (z in 0..4) {
        println("    ${ z + 1}. ${metList?.get(z)}")
    }
    num = inOb.nextLine().toInt()
    if (1 <= num && num <= 5) {
        selectedMetrics = metList!![num - 1]
    } else {
        println("You did not select a valid option.")
        System.exit(1)
    }
    println("You selected $selectedMetrics")
    val myDimension = getSpecificMet(selectedNamespace)
    if (myDimension == null) {
        println("Error - Dimension is null")
        exitProcess(1)
    }
    println(DASHES)

    println(DASHES)
    println("3. Get statistics for the selected metric over the last day.")
    val metricOption: String
    val statTypes = ArrayList<String>()
    statTypes.add("SampleCount")
    statTypes.add("Average")
    statTypes.add("Sum")
    statTypes.add("Minimum")
    statTypes.add("Maximum")

    for (t in 0..4) {
        println("    ${t + 1}. ${statTypes[t]}")
    }
    println("Select a metric statistic by entering a number from the preceding list:")
    num = inOb.nextLine().toInt()
    if (1 <= num && num <= 5) {
        metricOption = statTypes[num - 1]
    } else {
        println("You did not select a valid option.")
        exitProcess(1)
    }
    println("You selected $metricOption")
    getAndDisplayMetricStatistics(selectedNamespace, selectedMetrics, metricOption, myDate, myDimension)
    println(DASHES)

    println(DASHES)
    println("4. Get CloudWatch estimated billing for the last week.")
    getMetricStatistics(costDateWeek)
    println(DASHES)

    println(DASHES)
    println("5. Create a new CloudWatch dashboard with metrics.")
    createDashboardWithMetrics(dashboardName, dashboardJson)
    println(DASHES)

    println(DASHES)
    println("6. List dashboards using a paginator.")
    listDashboards()
    println(DASHES)

    println(DASHES)
    println("7. Create a new custom metric by adding data to it.")
    createNewCustomMetric(dataPoint)
    println(DASHES)

    println(DASHES)
    println("8. Add an additional metric to the dashboard.")
    addMetricToDashboard(dashboardAdd, dashboardName)
    println(DASHES)

    println(DASHES)
    println("9. Create an alarm for the custom metric.")
    val alarmName: String = createAlarm(settings)
    println(DASHES)

    println(DASHES)
    println("10. Describe 10 current alarms.")
    describeAlarms()
    println(DASHES)

    println(DASHES)
    println("11. Get current data for the new custom metric.")
    getCustomMetricData(settings)
    println(DASHES)

    println(DASHES)
    println("12. Push data into the custom metric to trigger the alarm.")
    addMetricDataForAlarm(settings)
    println(DASHES)

    println(DASHES)
    println("13. Check the alarm state using the action DescribeAlarmsForMetric.")
    checkForMetricAlarm(settings)
    println(DASHES)

    println(DASHES)
    println("14. Get alarm history for the new alarm.")
    getAlarmHistory(settings, myDate)
    println(DASHES)

    println(DASHES)
    println("15. Add an anomaly detector for the custom metric.")
    addAnomalyDetector(settings)
    println(DASHES)

    println(DASHES)
    println("16. Describe current anomaly detectors.")
    describeAnomalyDetectors(settings)
    println(DASHES)

    println(DASHES)
    println("17. Get a metric image for the custom metric.")
    getAndOpenMetricImage(metricImage)
    println(DASHES)

    println(DASHES)
    println("18. Clean up the Amazon CloudWatch resources.")
    deleteDashboard(dashboardName)
    deleteAlarm(alarmName)
    deleteAnomalyDetector(settings)
    println(DASHES)

    println(DASHES)
    println("The Amazon CloudWatch example scenario is complete.")
    println(DASHES)
}

suspend fun deleteAnomalyDetector(fileName: String) {
    // Read values from the JSON file.
    val parser = JsonFactory().createParser(File(fileName))
    val rootNode = ObjectMapper().readTree<JsonNode>(parser)
    val customMetricNamespace = rootNode.findValue("customMetricNamespace").asText()
    val customMetricName = rootNode.findValue("customMetricName").asText()

    val singleMetricAnomalyDetectorVal =
        SingleMetricAnomalyDetector {
            metricName = customMetricName
            namespace = customMetricNamespace
            stat = "Maximum"
        }

    val request =
        DeleteAnomalyDetectorRequest {
            singleMetricAnomalyDetector = singleMetricAnomalyDetectorVal
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        cwClient.deleteAnomalyDetector(request)
        println("Successfully deleted the Anomaly Detector.")
    }
}

suspend fun deleteAlarm(alarmNameVal: String) {
    val request =
        DeleteAlarmsRequest {
            alarmNames = listOf(alarmNameVal)
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        cwClient.deleteAlarms(request)
        println("Successfully deleted alarm $alarmNameVal")
    }
}

suspend fun deleteDashboard(dashboardName: String) {
    val dashboardsRequest =
        DeleteDashboardsRequest {
            dashboardNames = listOf(dashboardName)
        }
    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        cwClient.deleteDashboards(dashboardsRequest)
        println("$dashboardName was successfully deleted.")
    }
}

suspend fun getAndOpenMetricImage(fileName: String) {
    println("Getting Image data for custom metric.")
    val myJSON = """{
        "title": "Example Metric Graph",
        "view": "timeSeries",
        "stacked ": false,
        "period": 10,
        "width": 1400,
        "height": 600,
        "metrics": [
            [
            "AWS/Billing",
            "EstimatedCharges",
            "Currency",
            "USD"
            ]
        ]
        }"""

    val imageRequest =
        GetMetricWidgetImageRequest {
            metricWidget = myJSON
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        val response = cwClient.getMetricWidgetImage(imageRequest)
        val bytes = response.metricWidgetImage
        if (bytes != null) {
            File(fileName).writeBytes(bytes)
        }
    }
    println("You have successfully written data to $fileName")
}

suspend fun describeAnomalyDetectors(fileName: String) {
    // Read values from the JSON file.
    val parser = JsonFactory().createParser(File(fileName))
    val rootNode = ObjectMapper().readTree<JsonNode>(parser)
    val customMetricNamespace = rootNode.findValue("customMetricNamespace").asText()
    val customMetricName = rootNode.findValue("customMetricName").asText()

    val detectorsRequest =
        DescribeAnomalyDetectorsRequest {
            maxResults = 10
            metricName = customMetricName
            namespace = customMetricNamespace
        }
    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        val response = cwClient.describeAnomalyDetectors(detectorsRequest)
        response.anomalyDetectors?.forEach { detector ->
            println("Metric name: ${detector.singleMetricAnomalyDetector?.metricName}")
            println("State: ${detector.stateValue}")
        }
    }
}

suspend fun addAnomalyDetector(fileName: String?) {
    // Read values from the JSON file.
    val parser = JsonFactory().createParser(File(fileName))
    val rootNode = ObjectMapper().readTree<JsonNode>(parser)
    val customMetricNamespace = rootNode.findValue("customMetricNamespace").asText()
    val customMetricName = rootNode.findValue("customMetricName").asText()

    val singleMetricAnomalyDetectorVal =
        SingleMetricAnomalyDetector {
            metricName = customMetricName
            namespace = customMetricNamespace
            stat = "Maximum"
        }

    val anomalyDetectorRequest =
        PutAnomalyDetectorRequest {
            singleMetricAnomalyDetector = singleMetricAnomalyDetectorVal
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        cwClient.putAnomalyDetector(anomalyDetectorRequest)
        println("Added anomaly detector for metric $customMetricName.")
    }
}

suspend fun getAlarmHistory(
    fileName: String,
    date: String,
) {
    // Read values from the JSON file.
    val parser = JsonFactory().createParser(File(fileName))
    val rootNode = ObjectMapper().readTree<JsonNode>(parser)
    val alarmNameVal = rootNode.findValue("exampleAlarmName").asText()
    val start = Instant.parse(date)
    val endDateVal = Instant.now()

    val historyRequest =
        DescribeAlarmHistoryRequest {
            startDate =
                aws.smithy.kotlin.runtime.time
                    .Instant(start)
            endDate =
                aws.smithy.kotlin.runtime.time
                    .Instant(endDateVal)
            alarmName = alarmNameVal
            historyItemType = HistoryItemType.Action
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        val response = cwClient.describeAlarmHistory(historyRequest)
        val historyItems = response.alarmHistoryItems
        if (historyItems != null) {
            if (historyItems.isEmpty()) {
                println("No alarm history data found for $alarmNameVal.")
            } else {
                for (item in historyItems) {
                    println("History summary ${item.historySummary}")
                    println("Time stamp: ${item.timestamp}")
                }
            }
        }
    }
}

suspend fun checkForMetricAlarm(fileName: String?) {
    // Read values from the JSON file.
    val parser = JsonFactory().createParser(File(fileName))
    val rootNode = ObjectMapper().readTree<JsonNode>(parser)
    val customMetricNamespace = rootNode.findValue("customMetricNamespace").asText()
    val customMetricName = rootNode.findValue("customMetricName").asText()
    var hasAlarm = false
    var retries = 10

    val metricRequest =
        DescribeAlarmsForMetricRequest {
            metricName = customMetricName
            namespace = customMetricNamespace
        }
    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        while (!hasAlarm && retries > 0) {
            val response = cwClient.describeAlarmsForMetric(metricRequest)
            if (response.metricAlarms?.count()!! > 0) {
                hasAlarm = true
            }
            retries--
            delay(20000)
            println(".")
        }
        if (!hasAlarm) {
            println("No Alarm state found for $customMetricName after 10 retries.")
        } else {
            println("Alarm state found for $customMetricName.")
        }
    }
}

suspend fun addMetricDataForAlarm(fileName: String?) {
    // Read values from the JSON file.
    val parser = JsonFactory().createParser(File(fileName))
    val rootNode = ObjectMapper().readTree<JsonNode>(parser)
    val customMetricNamespace = rootNode.findValue("customMetricNamespace").asText()
    val customMetricName = rootNode.findValue("customMetricName").asText()

    // Set an Instant object.
    val time = ZonedDateTime.now(ZoneOffset.UTC).format(DateTimeFormatter.ISO_INSTANT)
    val instant = Instant.parse(time)
    val datum =
        MetricDatum {
            metricName = customMetricName
            unit = StandardUnit.None
            value = 1001.00
            timestamp =
                aws.smithy.kotlin.runtime.time
                    .Instant(instant)
        }

    val datum2 =
        MetricDatum {
            metricName = customMetricName
            unit = StandardUnit.None
            value = 1002.00
            timestamp =
                aws.smithy.kotlin.runtime.time
                    .Instant(instant)
        }

    val metricDataList = ArrayList<MetricDatum>()
    metricDataList.add(datum)
    metricDataList.add(datum2)

    val request =
        PutMetricDataRequest {
            namespace = customMetricNamespace
            metricData = metricDataList
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        cwClient.putMetricData(request)
        println("Added metric values for for metric $customMetricName")
    }
}

suspend fun getCustomMetricData(fileName: String) {
    // Read values from the JSON file.
    val parser = JsonFactory().createParser(File(fileName))
    val rootNode = ObjectMapper().readTree<JsonNode>(parser)
    val customMetricNamespace = rootNode.findValue("customMetricNamespace").asText()
    val customMetricName = rootNode.findValue("customMetricName").asText()

    // Set the date.
    val nowDate = Instant.now()
    val hours: Long = 1
    val minutes: Long = 30
    val date2 =
        nowDate.plus(hours, ChronoUnit.HOURS).plus(
            minutes,
            ChronoUnit.MINUTES,
        )

    val met =
        Metric {
            metricName = customMetricName
            namespace = customMetricNamespace
        }

    val metStat =
        MetricStat {
            stat = "Maximum"
            period = 1
            metric = met
        }

    val dataQUery =
        MetricDataQuery {
            metricStat = metStat
            id = "foo2"
            returnData = true
        }

    val dq = ArrayList<MetricDataQuery>()
    dq.add(dataQUery)
    val getMetReq =
        GetMetricDataRequest {
            maxDatapoints = 10
            scanBy = ScanBy.TimestampDescending
            startTime =
                aws.smithy.kotlin.runtime.time
                    .Instant(nowDate)
            endTime =
                aws.smithy.kotlin.runtime.time
                    .Instant(date2)
            metricDataQueries = dq
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        val response = cwClient.getMetricData(getMetReq)
        response.metricDataResults?.forEach { item ->
            println("The label is ${item.label}")
            println("The status code is ${item.statusCode}")
        }
    }
}

suspend fun describeAlarms() {
    val typeList = ArrayList<AlarmType>()
    typeList.add(AlarmType.MetricAlarm)
    val alarmsRequest =
        DescribeAlarmsRequest {
            alarmTypes = typeList
            maxRecords = 10
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        val response = cwClient.describeAlarms(alarmsRequest)
        response.metricAlarms?.forEach { alarm ->
            println("Alarm name: ${alarm.alarmName}")
            println("Alarm description: ${alarm.alarmDescription}")
        }
    }
}

suspend fun createAlarm(fileName: String): String {
    // Read values from the JSON file.
    val parser = JsonFactory().createParser(File(fileName))
    val rootNode: JsonNode = ObjectMapper().readTree(parser)
    val customMetricNamespace = rootNode.findValue("customMetricNamespace").asText()
    val customMetricName = rootNode.findValue("customMetricName").asText()
    val alarmNameVal = rootNode.findValue("exampleAlarmName").asText()
    val emailTopic = rootNode.findValue("emailTopic").asText()
    val accountId = rootNode.findValue("accountId").asText()
    val region2 = rootNode.findValue("region").asText()

    // Create a List for alarm actions.
    val alarmActionObs: MutableList<String> = ArrayList()
    alarmActionObs.add("arn:aws:sns:$region2:$accountId:$emailTopic")
    val alarmRequest =
        PutMetricAlarmRequest {
            alarmActions = alarmActionObs
            alarmDescription = "Example metric alarm"
            alarmName = alarmNameVal
            comparisonOperator = ComparisonOperator.GreaterThanOrEqualToThreshold
            threshold = 100.00
            metricName = customMetricName
            namespace = customMetricNamespace
            evaluationPeriods = 1
            period = 10
            statistic = Statistic.Maximum
            datapointsToAlarm = 1
            treatMissingData = "ignore"
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        cwClient.putMetricAlarm(alarmRequest)
        println("$alarmNameVal was successfully created!")
        return alarmNameVal
    }
}

suspend fun addMetricToDashboard(
    fileNameVal: String,
    dashboardNameVal: String,
) {
    val dashboardRequest =
        PutDashboardRequest {
            dashboardName = dashboardNameVal
            dashboardBody = readFileAsString(fileNameVal)
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        cwClient.putDashboard(dashboardRequest)
        println("$dashboardNameVal was successfully updated.")
    }
}

suspend fun createNewCustomMetric(dataPoint: Double) {
    val dimension =
        Dimension {
            name = "UNIQUE_PAGES"
            value = "URLS"
        }

    // Set an Instant object.
    val time = ZonedDateTime.now(ZoneOffset.UTC).format(DateTimeFormatter.ISO_INSTANT)
    val instant = Instant.parse(time)
    val datum =
        MetricDatum {
            metricName = "PAGES_VISITED"
            unit = StandardUnit.None
            value = dataPoint
            timestamp =
                aws.smithy.kotlin.runtime.time
                    .Instant(instant)
            dimensions = listOf(dimension)
        }

    val request =
        PutMetricDataRequest {
            namespace = "SITE/TRAFFIC"
            metricData = listOf(datum)
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        cwClient.putMetricData(request)
        println("Added metric values for for metric PAGES_VISITED")
    }
}

suspend fun listDashboards() {
    CloudWatchClient { region = "us-east-1" }.use { cwClient ->
        cwClient
            .listDashboardsPaginated({})
            .transform { it.dashboardEntries?.forEach { obj -> emit(obj) } }
            .collect { obj ->
                println("Name is ${obj.dashboardName}")
                println("Dashboard ARN is ${obj.dashboardArn}")
            }
    }
}

suspend fun createDashboardWithMetrics(
    dashboardNameVal: String,
    fileNameVal: String,
) {
    val dashboardRequest =
        PutDashboardRequest {
            dashboardName = dashboardNameVal
            dashboardBody = readFileAsString(fileNameVal)
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        val response = cwClient.putDashboard(dashboardRequest)
        println("$dashboardNameVal was successfully created.")
        val messages = response.dashboardValidationMessages
        if (messages != null) {
            if (messages.isEmpty()) {
                println("There are no messages in the new Dashboard")
            } else {
                for (message in messages) {
                    println("Message is: ${message.message}")
                }
            }
        }
    }
}

fun readFileAsString(file: String): String = String(Files.readAllBytes(Paths.get(file)))

suspend fun getMetricStatistics(costDateWeek: String?) {
    val start = Instant.parse(costDateWeek)
    val endDate = Instant.now()
    val dimension =
        Dimension {
            name = "Currency"
            value = "USD"
        }

    val dimensionList: MutableList<Dimension> = ArrayList()
    dimensionList.add(dimension)

    val statisticsRequest =
        GetMetricStatisticsRequest {
            metricName = "EstimatedCharges"
            namespace = "AWS/Billing"
            dimensions = dimensionList
            statistics = listOf(Statistic.Maximum)
            startTime =
                aws.smithy.kotlin.runtime.time
                    .Instant(start)
            endTime =
                aws.smithy.kotlin.runtime.time
                    .Instant(endDate)
            period = 86400
        }
    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        val response = cwClient.getMetricStatistics(statisticsRequest)
        val data: List<Datapoint>? = response.datapoints
        if (data != null) {
            if (!data.isEmpty()) {
                for (datapoint in data) {
                    println("Timestamp:  ${datapoint.timestamp} Maximum value: ${datapoint.maximum}")
                }
            } else {
                println("The returned data list is empty")
            }
        }
    }
}

suspend fun getAndDisplayMetricStatistics(
    nameSpaceVal: String,
    metVal: String,
    metricOption: String,
    date: String,
    myDimension: Dimension,
) {
    val start = Instant.parse(date)
    val endDate = Instant.now()
    val statisticsRequest =
        GetMetricStatisticsRequest {
            endTime =
                aws.smithy.kotlin.runtime.time
                    .Instant(endDate)
            startTime =
                aws.smithy.kotlin.runtime.time
                    .Instant(start)
            dimensions = listOf(myDimension)
            metricName = metVal
            namespace = nameSpaceVal
            period = 86400
            statistics = listOf(Statistic.fromValue(metricOption))
        }

    CloudWatchClient { region = "us-east-1" }.use { cwClient ->
        val response = cwClient.getMetricStatistics(statisticsRequest)
        val data = response.datapoints
        if (data != null) {
            if (data.isNotEmpty()) {
                for (datapoint in data) {
                    println("Timestamp: ${datapoint.timestamp} Maximum value: ${datapoint.maximum}")
                }
            } else {
                println("The returned data list is empty")
            }
        }
    }
}

suspend fun listMets(namespaceVal: String?): ArrayList<String>? {
    val metList = ArrayList<String>()
    val request =
        ListMetricsRequest {
            namespace = namespaceVal
        }
    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        val reponse = cwClient.listMetrics(request)
        reponse.metrics?.forEach { metrics ->
            val data = metrics.metricName
            if (!metList.contains(data)) {
                metList.add(data!!)
            }
        }
    }
    return metList
}

suspend fun getSpecificMet(namespaceVal: String?): Dimension? {
    val request =
        ListMetricsRequest {
            namespace = namespaceVal
        }
    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        val response = cwClient.listMetrics(request)
        val myList = response.metrics
        if (myList != null) {
            return myList[0].dimensions?.get(0)
        }
    }
    return null
}

suspend fun listNameSpaces(): ArrayList<String> {
    val nameSpaceList = ArrayList<String>()
    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        val response = cwClient.listMetrics(ListMetricsRequest {})
        response.metrics?.forEach { metrics ->
            val data = metrics.namespace
            if (!nameSpaceList.contains(data)) {
                nameSpaceList.add(data!!)
            }
        }
    }
    return nameSpaceList
}
```
+ API の詳細については、「*AWS SDK for Kotlin API リファレンス*」の以下のトピックを参照してください。
  + [DeleteAlarms](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [DeleteAnomalyDetector](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [DeleteDashboards](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [DescribeAlarmHistory](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [DescribeAlarms](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [DescribeAlarmsForMetric](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [DescribeAnomalyDetectors](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [GetMetricData](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [GetMetricStatistics](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [GetMetricWidgetImage](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [ListMetrics](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [PutAnomalyDetector](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [PutDashboard](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [PutMetricAlarm](https://sdk.amazonaws.com/kotlin/api/latest/index.html)
  + [PutMetricData](https://sdk.amazonaws.com/kotlin/api/latest/index.html)

## アクション
<a name="actions"></a>

### `DeleteAlarms`
<a name="cloudwatch_DeleteAlarms_kotlin_1_topic"></a>

次のコード例は、`DeleteAlarms` を使用する方法を示しています。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。完全な例を見つけて、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。

```
suspend fun deleteAlarm(alarmNameVal: String) {
    val request =
        DeleteAlarmsRequest {
            alarmNames = listOf(alarmNameVal)
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        cwClient.deleteAlarms(request)
        println("Successfully deleted alarm $alarmNameVal")
    }
}
```
+  API の詳細については、*AWS SDK for Kotlin API リファレンス*の「[DeleteAlarms](https://sdk.amazonaws.com/kotlin/api/latest/index.html)」を参照してください。

### `DeleteAnomalyDetector`
<a name="cloudwatch_DeleteAnomalyDetector_kotlin_1_topic"></a>

次のコード例は、`DeleteAnomalyDetector` を使用する方法を示しています。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。用例一覧を検索し、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。

```
suspend fun deleteAnomalyDetector(fileName: String) {
    // Read values from the JSON file.
    val parser = JsonFactory().createParser(File(fileName))
    val rootNode = ObjectMapper().readTree<JsonNode>(parser)
    val customMetricNamespace = rootNode.findValue("customMetricNamespace").asText()
    val customMetricName = rootNode.findValue("customMetricName").asText()

    val singleMetricAnomalyDetectorVal =
        SingleMetricAnomalyDetector {
            metricName = customMetricName
            namespace = customMetricNamespace
            stat = "Maximum"
        }

    val request =
        DeleteAnomalyDetectorRequest {
            singleMetricAnomalyDetector = singleMetricAnomalyDetectorVal
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        cwClient.deleteAnomalyDetector(request)
        println("Successfully deleted the Anomaly Detector.")
    }
}
```
+  API の詳細については、「AWS SDK for Kotlin API リファレンス」の「[DeleteAnomalyDetector](https://sdk.amazonaws.com/kotlin/api/latest/index.html)」を参照してください。

### `DeleteDashboards`
<a name="cloudwatch_DeleteDashboards_kotlin_1_topic"></a>

次のコード例は、`DeleteDashboards` を使用する方法を示しています。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。用例一覧を検索し、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。

```
suspend fun deleteDashboard(dashboardName: String) {
    val dashboardsRequest =
        DeleteDashboardsRequest {
            dashboardNames = listOf(dashboardName)
        }
    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        cwClient.deleteDashboards(dashboardsRequest)
        println("$dashboardName was successfully deleted.")
    }
}
```
+  API の詳細については、「AWS SDK for Kotlin API リファレンス」の「[DeleteDashboards](https://sdk.amazonaws.com/kotlin/api/latest/index.html)」を参照してください。

### `DescribeAlarmHistory`
<a name="cloudwatch_DescribeAlarmHistory_kotlin_1_topic"></a>

次のコード例は、`DescribeAlarmHistory` を使用する方法を示しています。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。用例一覧を検索し、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。

```
suspend fun getAlarmHistory(
    fileName: String,
    date: String,
) {
    // Read values from the JSON file.
    val parser = JsonFactory().createParser(File(fileName))
    val rootNode = ObjectMapper().readTree<JsonNode>(parser)
    val alarmNameVal = rootNode.findValue("exampleAlarmName").asText()
    val start = Instant.parse(date)
    val endDateVal = Instant.now()

    val historyRequest =
        DescribeAlarmHistoryRequest {
            startDate =
                aws.smithy.kotlin.runtime.time
                    .Instant(start)
            endDate =
                aws.smithy.kotlin.runtime.time
                    .Instant(endDateVal)
            alarmName = alarmNameVal
            historyItemType = HistoryItemType.Action
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        val response = cwClient.describeAlarmHistory(historyRequest)
        val historyItems = response.alarmHistoryItems
        if (historyItems != null) {
            if (historyItems.isEmpty()) {
                println("No alarm history data found for $alarmNameVal.")
            } else {
                for (item in historyItems) {
                    println("History summary ${item.historySummary}")
                    println("Time stamp: ${item.timestamp}")
                }
            }
        }
    }
}
```
+  API の詳細については、「AWS SDK for Kotlin API リファレンス**」の「[DescribeAlarmHistory](https://sdk.amazonaws.com/kotlin/api/latest/index.html)」を参照してください。

### `DescribeAlarms`
<a name="cloudwatch_DescribeAlarms_kotlin_1_topic"></a>

次のコード例は、`DescribeAlarms` を使用する方法を示しています。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。用例一覧を検索し、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。

```
suspend fun describeAlarms() {
    val typeList = ArrayList<AlarmType>()
    typeList.add(AlarmType.MetricAlarm)
    val alarmsRequest =
        DescribeAlarmsRequest {
            alarmTypes = typeList
            maxRecords = 10
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        val response = cwClient.describeAlarms(alarmsRequest)
        response.metricAlarms?.forEach { alarm ->
            println("Alarm name: ${alarm.alarmName}")
            println("Alarm description: ${alarm.alarmDescription}")
        }
    }
}
```
+  API の詳細については、「AWS SDK for Kotlin API リファレンス」の「[DescribeAlarms](https://sdk.amazonaws.com/kotlin/api/latest/index.html)」を参照してください。

### `DescribeAlarmsForMetric`
<a name="cloudwatch_DescribeAlarmsForMetric_kotlin_1_topic"></a>

次のコード例は、`DescribeAlarmsForMetric` を使用する方法を示しています。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。完全な例を見つけて、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。

```
suspend fun checkForMetricAlarm(fileName: String?) {
    // Read values from the JSON file.
    val parser = JsonFactory().createParser(File(fileName))
    val rootNode = ObjectMapper().readTree<JsonNode>(parser)
    val customMetricNamespace = rootNode.findValue("customMetricNamespace").asText()
    val customMetricName = rootNode.findValue("customMetricName").asText()
    var hasAlarm = false
    var retries = 10

    val metricRequest =
        DescribeAlarmsForMetricRequest {
            metricName = customMetricName
            namespace = customMetricNamespace
        }
    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        while (!hasAlarm && retries > 0) {
            val response = cwClient.describeAlarmsForMetric(metricRequest)
            if (response.metricAlarms?.count()!! > 0) {
                hasAlarm = true
            }
            retries--
            delay(20000)
            println(".")
        }
        if (!hasAlarm) {
            println("No Alarm state found for $customMetricName after 10 retries.")
        } else {
            println("Alarm state found for $customMetricName.")
        }
    }
}
```
+  API の詳細については、*AWS SDK for Kotlin API リファレンス*の「[DescribeAlarmsForMetric](https://sdk.amazonaws.com/kotlin/api/latest/index.html)」を参照してください。

### `DescribeAnomalyDetectors`
<a name="cloudwatch_DescribeAnomalyDetectors_kotlin_1_topic"></a>

次のコード例は、`DescribeAnomalyDetectors` を使用する方法を示しています。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。用例一覧を検索し、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。

```
suspend fun describeAnomalyDetectors(fileName: String) {
    // Read values from the JSON file.
    val parser = JsonFactory().createParser(File(fileName))
    val rootNode = ObjectMapper().readTree<JsonNode>(parser)
    val customMetricNamespace = rootNode.findValue("customMetricNamespace").asText()
    val customMetricName = rootNode.findValue("customMetricName").asText()

    val detectorsRequest =
        DescribeAnomalyDetectorsRequest {
            maxResults = 10
            metricName = customMetricName
            namespace = customMetricNamespace
        }
    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        val response = cwClient.describeAnomalyDetectors(detectorsRequest)
        response.anomalyDetectors?.forEach { detector ->
            println("Metric name: ${detector.singleMetricAnomalyDetector?.metricName}")
            println("State: ${detector.stateValue}")
        }
    }
}
```
+  API の詳細については、「AWS SDK for Kotlin API リファレンス」の「[DescribeAnomalyDetectors](https://sdk.amazonaws.com/kotlin/api/latest/index.html)」を参照してください。

### `DisableAlarmActions`
<a name="cloudwatch_DisableAlarmActions_kotlin_1_topic"></a>

次のコード例は、`DisableAlarmActions` を使用する方法を示しています。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。完全な例を見つけて、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。

```
suspend fun disableActions(alarmName: String) {
    val request =
        DisableAlarmActionsRequest {
            alarmNames = listOf(alarmName)
        }
    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        cwClient.disableAlarmActions(request)
        println("Successfully disabled actions on alarm $alarmName")
    }
}
```
+  API の詳細については、*AWS SDK for Kotlin API リファレンス*の「[DisableAlarmActions](https://sdk.amazonaws.com/kotlin/api/latest/index.html)」を参照してください。

### `EnableAlarmActions`
<a name="cloudwatch_EnableAlarmActions_kotlin_1_topic"></a>

次のコード例は、`EnableAlarmActions` を使用する方法を示しています。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。完全な例を見つけて、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。

```
suspend fun enableActions(alarm: String) {
    val request =
        EnableAlarmActionsRequest {
            alarmNames = listOf(alarm)
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        cwClient.enableAlarmActions(request)
        println("Successfully enabled actions on alarm $alarm")
    }
}
```
+  API の詳細については、*AWS SDK for Kotlin API リファレンス*の「[EnableAlarmActions](https://sdk.amazonaws.com/kotlin/api/latest/index.html)」を参照してください。

### `GetMetricData`
<a name="cloudwatch_GetMetricData_kotlin_1_topic"></a>

次のコード例は、`GetMetricData` を使用する方法を示しています。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。用例一覧を検索し、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。

```
suspend fun getCustomMetricData(fileName: String) {
    // Read values from the JSON file.
    val parser = JsonFactory().createParser(File(fileName))
    val rootNode = ObjectMapper().readTree<JsonNode>(parser)
    val customMetricNamespace = rootNode.findValue("customMetricNamespace").asText()
    val customMetricName = rootNode.findValue("customMetricName").asText()

    // Set the date.
    val nowDate = Instant.now()
    val hours: Long = 1
    val minutes: Long = 30
    val date2 =
        nowDate.plus(hours, ChronoUnit.HOURS).plus(
            minutes,
            ChronoUnit.MINUTES,
        )

    val met =
        Metric {
            metricName = customMetricName
            namespace = customMetricNamespace
        }

    val metStat =
        MetricStat {
            stat = "Maximum"
            period = 1
            metric = met
        }

    val dataQUery =
        MetricDataQuery {
            metricStat = metStat
            id = "foo2"
            returnData = true
        }

    val dq = ArrayList<MetricDataQuery>()
    dq.add(dataQUery)
    val getMetReq =
        GetMetricDataRequest {
            maxDatapoints = 10
            scanBy = ScanBy.TimestampDescending
            startTime =
                aws.smithy.kotlin.runtime.time
                    .Instant(nowDate)
            endTime =
                aws.smithy.kotlin.runtime.time
                    .Instant(date2)
            metricDataQueries = dq
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        val response = cwClient.getMetricData(getMetReq)
        response.metricDataResults?.forEach { item ->
            println("The label is ${item.label}")
            println("The status code is ${item.statusCode}")
        }
    }
}
```
+  API の詳細については、「AWS SDK for Kotlin API リファレンス」の「[GetMetricData](https://sdk.amazonaws.com/kotlin/api/latest/index.html)」を参照してください。

### `GetMetricStatistics`
<a name="cloudwatch_GetMetricStatistics_kotlin_1_topic"></a>

次のコード例は、`GetMetricStatistics` を使用する方法を示しています。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。用例一覧を検索し、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。

```
suspend fun getAndDisplayMetricStatistics(
    nameSpaceVal: String,
    metVal: String,
    metricOption: String,
    date: String,
    myDimension: Dimension,
) {
    val start = Instant.parse(date)
    val endDate = Instant.now()
    val statisticsRequest =
        GetMetricStatisticsRequest {
            endTime =
                aws.smithy.kotlin.runtime.time
                    .Instant(endDate)
            startTime =
                aws.smithy.kotlin.runtime.time
                    .Instant(start)
            dimensions = listOf(myDimension)
            metricName = metVal
            namespace = nameSpaceVal
            period = 86400
            statistics = listOf(Statistic.fromValue(metricOption))
        }

    CloudWatchClient { region = "us-east-1" }.use { cwClient ->
        val response = cwClient.getMetricStatistics(statisticsRequest)
        val data = response.datapoints
        if (data != null) {
            if (data.isNotEmpty()) {
                for (datapoint in data) {
                    println("Timestamp: ${datapoint.timestamp} Maximum value: ${datapoint.maximum}")
                }
            } else {
                println("The returned data list is empty")
            }
        }
    }
}
```
+  API の詳細については、「AWS SDK for Kotlin API リファレンス」の「[GetMetricStatistics](https://sdk.amazonaws.com/kotlin/api/latest/index.html)」を参照してください。

### `GetMetricWidgetImage`
<a name="cloudwatch_GetMetricWidgetImage_kotlin_1_topic"></a>

次のコード例は、`GetMetricWidgetImage` を使用する方法を示しています。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。用例一覧を検索し、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。

```
suspend fun getAndOpenMetricImage(fileName: String) {
    println("Getting Image data for custom metric.")
    val myJSON = """{
        "title": "Example Metric Graph",
        "view": "timeSeries",
        "stacked ": false,
        "period": 10,
        "width": 1400,
        "height": 600,
        "metrics": [
            [
            "AWS/Billing",
            "EstimatedCharges",
            "Currency",
            "USD"
            ]
        ]
        }"""

    val imageRequest =
        GetMetricWidgetImageRequest {
            metricWidget = myJSON
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        val response = cwClient.getMetricWidgetImage(imageRequest)
        val bytes = response.metricWidgetImage
        if (bytes != null) {
            File(fileName).writeBytes(bytes)
        }
    }
    println("You have successfully written data to $fileName")
}
```
+  API の詳細については、「AWS SDK for Kotlin API リファレンス」の「[GetMetricWidgetImage](https://sdk.amazonaws.com/kotlin/api/latest/index.html)」を参照してください。

### `ListDashboards`
<a name="cloudwatch_ListDashboards_kotlin_1_topic"></a>

次のコード例は、`ListDashboards` を使用する方法を示しています。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。用例一覧を検索し、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。

```
suspend fun listDashboards() {
    CloudWatchClient { region = "us-east-1" }.use { cwClient ->
        cwClient
            .listDashboardsPaginated({})
            .transform { it.dashboardEntries?.forEach { obj -> emit(obj) } }
            .collect { obj ->
                println("Name is ${obj.dashboardName}")
                println("Dashboard ARN is ${obj.dashboardArn}")
            }
    }
}
```
+  API の詳細については、「AWS SDK for Kotlin API リファレンス」の「[ListDashboards](https://sdk.amazonaws.com/kotlin/api/latest/index.html)」を参照してください。

### `ListMetrics`
<a name="cloudwatch_ListMetrics_kotlin_1_topic"></a>

次のコード例は、`ListMetrics` を使用する方法を示しています。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。用例一覧を検索し、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。

```
suspend fun listMets(namespaceVal: String?): ArrayList<String>? {
    val metList = ArrayList<String>()
    val request =
        ListMetricsRequest {
            namespace = namespaceVal
        }
    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        val reponse = cwClient.listMetrics(request)
        reponse.metrics?.forEach { metrics ->
            val data = metrics.metricName
            if (!metList.contains(data)) {
                metList.add(data!!)
            }
        }
    }
    return metList
}
```
+  API の詳細については、「AWS SDK for Kotlin API リファレンス」の「[ListMetrics](https://sdk.amazonaws.com/kotlin/api/latest/index.html)」を参照してください。

### `PutAnomalyDetector`
<a name="cloudwatch_PutAnomalyDetector_kotlin_1_topic"></a>

次のコード例は、`PutAnomalyDetector` を使用する方法を示しています。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。用例一覧を検索し、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。

```
suspend fun addAnomalyDetector(fileName: String?) {
    // Read values from the JSON file.
    val parser = JsonFactory().createParser(File(fileName))
    val rootNode = ObjectMapper().readTree<JsonNode>(parser)
    val customMetricNamespace = rootNode.findValue("customMetricNamespace").asText()
    val customMetricName = rootNode.findValue("customMetricName").asText()

    val singleMetricAnomalyDetectorVal =
        SingleMetricAnomalyDetector {
            metricName = customMetricName
            namespace = customMetricNamespace
            stat = "Maximum"
        }

    val anomalyDetectorRequest =
        PutAnomalyDetectorRequest {
            singleMetricAnomalyDetector = singleMetricAnomalyDetectorVal
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        cwClient.putAnomalyDetector(anomalyDetectorRequest)
        println("Added anomaly detector for metric $customMetricName.")
    }
}
```
+  API の詳細については、**「AWS SDK for Kotlin API リファレンス」の「[PutAnomalyDetector](https://sdk.amazonaws.com/kotlin/api/latest/index.html)」を参照してください。

### `PutDashboard`
<a name="cloudwatch_PutDashboard_kotlin_1_topic"></a>

次のコード例は、`PutDashboard` を使用する方法を示しています。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。用例一覧を検索し、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。

```
suspend fun createDashboardWithMetrics(
    dashboardNameVal: String,
    fileNameVal: String,
) {
    val dashboardRequest =
        PutDashboardRequest {
            dashboardName = dashboardNameVal
            dashboardBody = readFileAsString(fileNameVal)
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        val response = cwClient.putDashboard(dashboardRequest)
        println("$dashboardNameVal was successfully created.")
        val messages = response.dashboardValidationMessages
        if (messages != null) {
            if (messages.isEmpty()) {
                println("There are no messages in the new Dashboard")
            } else {
                for (message in messages) {
                    println("Message is: ${message.message}")
                }
            }
        }
    }
}
```
+  API の詳細については、「AWS SDK for Kotlin API リファレンス」の「[PutDashboard](https://sdk.amazonaws.com/kotlin/api/latest/index.html)」を参照してください。

### `PutMetricAlarm`
<a name="cloudwatch_PutMetricAlarm_kotlin_1_topic"></a>

次のコード例は、`PutMetricAlarm` を使用する方法を示しています。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。完全な例を見つけて、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。

```
suspend fun putMetricAlarm(
    alarmNameVal: String,
    instanceIdVal: String,
) {
    val dimensionOb =
        Dimension {
            name = "InstanceId"
            value = instanceIdVal
        }

    val request =
        PutMetricAlarmRequest {
            alarmName = alarmNameVal
            comparisonOperator = ComparisonOperator.GreaterThanThreshold
            evaluationPeriods = 1
            metricName = "CPUUtilization"
            namespace = "AWS/EC2"
            period = 60
            statistic = Statistic.fromValue("Average")
            threshold = 70.0
            actionsEnabled = false
            alarmDescription = "An Alarm created by the Kotlin SDK when server CPU utilization exceeds 70%"
            unit = StandardUnit.fromValue("Seconds")
            dimensions = listOf(dimensionOb)
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        cwClient.putMetricAlarm(request)
        println("Successfully created an alarm with name $alarmNameVal")
    }
}
```
+  API の詳細については、*AWS SDK for Kotlin API リファレンス*の「[PutMetricAlarm](https://sdk.amazonaws.com/kotlin/api/latest/index.html)」を参照してください。

### `PutMetricData`
<a name="cloudwatch_PutMetricData_kotlin_1_topic"></a>

次のコード例は、`PutMetricData` を使用する方法を示しています。

**SDK for Kotlin**  
 GitHub には、その他のリソースもあります。用例一覧を検索し、[AWS コード例リポジトリ](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)での設定と実行の方法を確認してください。

```
suspend fun addMetricDataForAlarm(fileName: String?) {
    // Read values from the JSON file.
    val parser = JsonFactory().createParser(File(fileName))
    val rootNode = ObjectMapper().readTree<JsonNode>(parser)
    val customMetricNamespace = rootNode.findValue("customMetricNamespace").asText()
    val customMetricName = rootNode.findValue("customMetricName").asText()

    // Set an Instant object.
    val time = ZonedDateTime.now(ZoneOffset.UTC).format(DateTimeFormatter.ISO_INSTANT)
    val instant = Instant.parse(time)
    val datum =
        MetricDatum {
            metricName = customMetricName
            unit = StandardUnit.None
            value = 1001.00
            timestamp =
                aws.smithy.kotlin.runtime.time
                    .Instant(instant)
        }

    val datum2 =
        MetricDatum {
            metricName = customMetricName
            unit = StandardUnit.None
            value = 1002.00
            timestamp =
                aws.smithy.kotlin.runtime.time
                    .Instant(instant)
        }

    val metricDataList = ArrayList<MetricDatum>()
    metricDataList.add(datum)
    metricDataList.add(datum2)

    val request =
        PutMetricDataRequest {
            namespace = customMetricNamespace
            metricData = metricDataList
        }

    CloudWatchClient.fromEnvironment { region = "us-east-1" }.use { cwClient ->
        cwClient.putMetricData(request)
        println("Added metric values for for metric $customMetricName")
    }
}
```
+  API の詳細については、「AWS SDK for Kotlin API リファレンス」の「[PutMetricData](https://sdk.amazonaws.com/kotlin/api/latest/index.html)」を参照してください。