CloudWatch ejemplos que se utilizan SDK para Java 2.x

Los siguientes ejemplos de código muestran cómo realizar acciones e implementar escenarios comunes mediante el uso del AWS SDK for Java 2.x with CloudWatch.

Las acciones son extractos de código de programas más grandes y deben ejecutarse en contexto. Mientras las acciones muestran cómo llamar a las funciones de servicio individuales, es posible ver las acciones en contexto en los escenarios relacionados y en los ejemplos entre servicios.

Los escenarios son ejemplos de código que muestran cómo llevar a cabo una tarea específica llamando a varias funciones dentro del mismo servicio.

Cada ejemplo incluye un enlace a GitHub, donde puede encontrar instrucciones sobre cómo configurar y ejecutar el código en su contexto.

Introducción

¿Hola CloudWatch

Los siguientes ejemplos de código muestran cómo empezar a usarlo CloudWatch.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cloudwatch.CloudWatchClient;
import software.amazon.awssdk.services.cloudwatch.model.CloudWatchException;
import software.amazon.awssdk.services.cloudwatch.model.ListMetricsRequest;
import software.amazon.awssdk.services.cloudwatch.paginators.ListMetricsIterable;

/**
 * Before running this Java V2 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-java/latest/developer-guide/get-started.html
 */
public class HelloService {
    public static void main(String[] args) {
        final String usage = """

                Usage:
                  <namespace>\s

                Where:
                  namespace - The namespace to filter against (for example, AWS/EC2).\s
                """;

        if (args.length != 1) {
            System.out.println(usage);
            System.exit(1);
        }

        String namespace = args[0];
        Region region = Region.US_EAST_1;
        CloudWatchClient cw = CloudWatchClient.builder()
                .region(region)
                .build();

        listMets(cw, namespace);
        cw.close();
    }

    public static void listMets(CloudWatchClient cw, String namespace) {
        try {
            ListMetricsRequest request = ListMetricsRequest.builder()
                    .namespace(namespace)
                    .build();

            ListMetricsIterable listRes = cw.listMetricsPaginator(request);
            listRes.stream()
                    .flatMap(r -> r.metrics().stream())
                    .forEach(metrics -> System.out.println(" Retrieved metric is: " + metrics.metricName()));

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}

• Para API obtener más información, consulte ListMetricsla AWS SDK for Java 2.x APIReferencia.

Acciones

DeleteAlarms

En el siguiente ejemplo de código, se muestra cómo usar DeleteAlarms.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cloudwatch.CloudWatchClient;
import software.amazon.awssdk.services.cloudwatch.model.CloudWatchException;
import software.amazon.awssdk.services.cloudwatch.model.DeleteAlarmsRequest;

/**
 * Before running this Java V2 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-java/latest/developer-guide/get-started.html
 */

public class DeleteAlarm {
    public static void main(String[] args) {
        final String usage = """

                Usage:
                  <alarmName>

                Where:
                  alarmName - An alarm name to delete (for example, MyAlarm).
                """;

        if (args.length != 1) {
            System.out.println(usage);
            System.exit(1);
        }

        String alarmName = args[0];
        Region region = Region.US_EAST_2;
        CloudWatchClient cw = CloudWatchClient.builder()
                .region(region)
                .build();

        deleteCWAlarm(cw, alarmName);
        cw.close();
    }

    public static void deleteCWAlarm(CloudWatchClient cw, String alarmName) {
        try {
            DeleteAlarmsRequest request = DeleteAlarmsRequest.builder()
                    .alarmNames(alarmName)
                    .build();

            cw.deleteAlarms(request);
            System.out.printf("Successfully deleted alarm %s", alarmName);

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}

• Para API obtener más información, consulte DeleteAlarmsla AWS SDK for Java 2.x APIReferencia.

DeleteAnomalyDetector

En el siguiente ejemplo de código, se muestra cómo usar DeleteAnomalyDetector.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

    public static void deleteAnomalyDetector(CloudWatchClient cw, String fileName) {
        try {
            // Read values from the JSON file.
            JsonParser parser = new JsonFactory().createParser(new File(fileName));
            com.fasterxml.jackson.databind.JsonNode rootNode = new ObjectMapper().readTree(parser);
            String customMetricNamespace = rootNode.findValue("customMetricNamespace").asText();
            String customMetricName = rootNode.findValue("customMetricName").asText();

            SingleMetricAnomalyDetector singleMetricAnomalyDetector = SingleMetricAnomalyDetector.builder()
                    .metricName(customMetricName)
                    .namespace(customMetricNamespace)
                    .stat("Maximum")
                    .build();

            DeleteAnomalyDetectorRequest request = DeleteAnomalyDetectorRequest.builder()
                    .singleMetricAnomalyDetector(singleMetricAnomalyDetector)
                    .build();

            cw.deleteAnomalyDetector(request);
            System.out.println("Successfully deleted the Anomaly Detector.");

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

• Para API obtener más información, consulte DeleteAnomalyDetectorla AWS SDK for Java 2.x APIReferencia.

DeleteDashboards

En el siguiente ejemplo de código, se muestra cómo usar DeleteDashboards.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

    public static void deleteDashboard(CloudWatchClient cw, String dashboardName) {
        try {
            DeleteDashboardsRequest dashboardsRequest = DeleteDashboardsRequest.builder()
                    .dashboardNames(dashboardName)
                    .build();
            cw.deleteDashboards(dashboardsRequest);
            System.out.println(dashboardName + " was successfully deleted.");

        } catch (CloudWatchException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

• Para API obtener más información, consulte DeleteDashboardsla AWS SDK for Java 2.x APIReferencia.

DescribeAlarmHistory

En el siguiente ejemplo de código, se muestra cómo usar DescribeAlarmHistory.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

    public static void getAlarmHistory(CloudWatchClient cw, String fileName, String date) {
        try {
            // Read values from the JSON file.
            JsonParser parser = new JsonFactory().createParser(new File(fileName));
            com.fasterxml.jackson.databind.JsonNode rootNode = new ObjectMapper().readTree(parser);
            String alarmName = rootNode.findValue("exampleAlarmName").asText();

            Instant start = Instant.parse(date);
            Instant endDate = Instant.now();
            DescribeAlarmHistoryRequest historyRequest = DescribeAlarmHistoryRequest.builder()
                    .startDate(start)
                    .endDate(endDate)
                    .alarmName(alarmName)
                    .historyItemType(HistoryItemType.ACTION)
                    .build();

            DescribeAlarmHistoryResponse response = cw.describeAlarmHistory(historyRequest);
            List<AlarmHistoryItem> historyItems = response.alarmHistoryItems();
            if (historyItems.isEmpty()) {
                System.out.println("No alarm history data found for " + alarmName + ".");
            } else {
                for (AlarmHistoryItem item : historyItems) {
                    System.out.println("History summary: " + item.historySummary());
                    System.out.println("Time stamp: " + item.timestamp());
                }
            }

        } catch (CloudWatchException | IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

• Para API obtener más información, consulte DescribeAlarmHistoryla AWS SDK for Java 2.x APIReferencia.

DescribeAlarms

En el siguiente ejemplo de código, se muestra cómo usar DescribeAlarms.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

    public static void describeAlarms(CloudWatchClient cw) {
        try {
            List<AlarmType> typeList = new ArrayList<>();
            typeList.add(AlarmType.METRIC_ALARM);

            DescribeAlarmsRequest alarmsRequest = DescribeAlarmsRequest.builder()
                    .alarmTypes(typeList)
                    .maxRecords(10)
                    .build();

            DescribeAlarmsResponse response = cw.describeAlarms(alarmsRequest);
            List<MetricAlarm> alarmList = response.metricAlarms();
            for (MetricAlarm alarm : alarmList) {
                System.out.println("Alarm name: " + alarm.alarmName());
                System.out.println("Alarm description: " + alarm.alarmDescription());
            }
        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

• Para API obtener más información, consulte DescribeAlarmsla AWS SDK for Java 2.x APIReferencia.

DescribeAlarmsForMetric

En el siguiente ejemplo de código, se muestra cómo usar DescribeAlarmsForMetric.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

    public static void checkForMetricAlarm(CloudWatchClient cw, String fileName) {
        try {
            // Read values from the JSON file.
            JsonParser parser = new JsonFactory().createParser(new File(fileName));
            com.fasterxml.jackson.databind.JsonNode rootNode = new ObjectMapper().readTree(parser);
            String customMetricNamespace = rootNode.findValue("customMetricNamespace").asText();
            String customMetricName = rootNode.findValue("customMetricName").asText();
            boolean hasAlarm = false;
            int retries = 10;

            DescribeAlarmsForMetricRequest metricRequest = DescribeAlarmsForMetricRequest.builder()
                    .metricName(customMetricName)
                    .namespace(customMetricNamespace)
                    .build();

            while (!hasAlarm && retries > 0) {
                DescribeAlarmsForMetricResponse response = cw.describeAlarmsForMetric(metricRequest);
                hasAlarm = response.hasMetricAlarms();
                retries--;
                Thread.sleep(20000);
                System.out.println(".");
            }
            if (!hasAlarm)
                System.out.println("No Alarm state found for " + customMetricName + " after 10 retries.");
            else
                System.out.println("Alarm state found for " + customMetricName + ".");

        } catch (CloudWatchException | IOException | InterruptedException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

• Para API obtener más información, consulte DescribeAlarmsForMetricla AWS SDK for Java 2.x APIReferencia.

DescribeAnomalyDetectors

En el siguiente ejemplo de código, se muestra cómo usar DescribeAnomalyDetectors.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

    public static void describeAnomalyDetectors(CloudWatchClient cw, String fileName) {
        try {
            // Read values from the JSON file.
            JsonParser parser = new JsonFactory().createParser(new File(fileName));
            com.fasterxml.jackson.databind.JsonNode rootNode = new ObjectMapper().readTree(parser);
            String customMetricNamespace = rootNode.findValue("customMetricNamespace").asText();
            String customMetricName = rootNode.findValue("customMetricName").asText();
            DescribeAnomalyDetectorsRequest detectorsRequest = DescribeAnomalyDetectorsRequest.builder()
                    .maxResults(10)
                    .metricName(customMetricName)
                    .namespace(customMetricNamespace)
                    .build();

            DescribeAnomalyDetectorsResponse response = cw.describeAnomalyDetectors(detectorsRequest);
            List<AnomalyDetector> anomalyDetectorList = response.anomalyDetectors();
            for (AnomalyDetector detector : anomalyDetectorList) {
                System.out.println("Metric name: " + detector.singleMetricAnomalyDetector().metricName());
                System.out.println("State: " + detector.stateValue());
            }

        } catch (CloudWatchException | IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

• Para API obtener más información, consulte DescribeAnomalyDetectorsla AWS SDK for Java 2.x APIReferencia.

DisableAlarmActions

En el siguiente ejemplo de código, se muestra cómo usar DisableAlarmActions.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cloudwatch.CloudWatchClient;
import software.amazon.awssdk.services.cloudwatch.model.CloudWatchException;
import software.amazon.awssdk.services.cloudwatch.model.DisableAlarmActionsRequest;

/**
 * Before running this Java V2 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-java/latest/developer-guide/get-started.html
 */
public class DisableAlarmActions {
    public static void main(String[] args) {
        final String usage = """

                Usage:
                  <alarmName>

                Where:
                  alarmName - An alarm name to disable (for example, MyAlarm).
                """;

        if (args.length != 1) {
            System.out.println(usage);
            System.exit(1);
        }

        String alarmName = args[0];
        Region region = Region.US_EAST_1;
        CloudWatchClient cw = CloudWatchClient.builder()
                .region(region)
                .build();

        disableActions(cw, alarmName);
        cw.close();
    }

    public static void disableActions(CloudWatchClient cw, String alarmName) {
        try {
            DisableAlarmActionsRequest request = DisableAlarmActionsRequest.builder()
                    .alarmNames(alarmName)
                    .build();

            cw.disableAlarmActions(request);
            System.out.printf("Successfully disabled actions on alarm %s", alarmName);

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}

• Para API obtener más información, consulte DisableAlarmActionsla AWS SDK for Java 2.x APIReferencia.

EnableAlarmActions

En el siguiente ejemplo de código, se muestra cómo usar EnableAlarmActions.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cloudwatch.CloudWatchClient;
import software.amazon.awssdk.services.cloudwatch.model.CloudWatchException;
import software.amazon.awssdk.services.cloudwatch.model.EnableAlarmActionsRequest;

/**
 * Before running this Java V2 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-java/latest/developer-guide/get-started.html
 */
public class EnableAlarmActions {
    public static void main(String[] args) {
        final String usage = """

                Usage:
                  <alarmName>

                Where:
                  alarmName - An alarm name to enable (for example, MyAlarm).
                """;

        if (args.length != 1) {
            System.out.println(usage);
            System.exit(1);
        }

        String alarm = args[0];
        Region region = Region.US_EAST_1;
        CloudWatchClient cw = CloudWatchClient.builder()
                .region(region)
                .build();

        enableActions(cw, alarm);
        cw.close();
    }

    public static void enableActions(CloudWatchClient cw, String alarm) {
        try {
            EnableAlarmActionsRequest request = EnableAlarmActionsRequest.builder()
                    .alarmNames(alarm)
                    .build();

            cw.enableAlarmActions(request);
            System.out.printf("Successfully enabled actions on alarm %s", alarm);

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}

• Para API obtener más información, consulte EnableAlarmActionsla AWS SDK for Java 2.x APIReferencia.

GetMetricData

En el siguiente ejemplo de código, se muestra cómo usar GetMetricData.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

    public static void getCustomMetricData(CloudWatchClient cw, String fileName) {
        try {
            // Read values from the JSON file.
            JsonParser parser = new JsonFactory().createParser(new File(fileName));
            com.fasterxml.jackson.databind.JsonNode rootNode = new ObjectMapper().readTree(parser);
            String customMetricNamespace = rootNode.findValue("customMetricNamespace").asText();
            String customMetricName = rootNode.findValue("customMetricName").asText();

            // Set the date.
            Instant nowDate = Instant.now();

            long hours = 1;
            long minutes = 30;
            Instant date2 = nowDate.plus(hours, ChronoUnit.HOURS).plus(minutes,
                    ChronoUnit.MINUTES);

            Metric met = Metric.builder()
                    .metricName(customMetricName)
                    .namespace(customMetricNamespace)
                    .build();

            MetricStat metStat = MetricStat.builder()
                    .stat("Maximum")
                    .period(1)
                    .metric(met)
                    .build();

            MetricDataQuery dataQUery = MetricDataQuery.builder()
                    .metricStat(metStat)
                    .id("foo2")
                    .returnData(true)
                    .build();

            List<MetricDataQuery> dq = new ArrayList<>();
            dq.add(dataQUery);

            GetMetricDataRequest getMetReq = GetMetricDataRequest.builder()
                    .maxDatapoints(10)
                    .scanBy(ScanBy.TIMESTAMP_DESCENDING)
                    .startTime(nowDate)
                    .endTime(date2)
                    .metricDataQueries(dq)
                    .build();

            GetMetricDataResponse response = cw.getMetricData(getMetReq);
            List<MetricDataResult> data = response.metricDataResults();
            for (MetricDataResult item : data) {
                System.out.println("The label is " + item.label());
                System.out.println("The status code is " + item.statusCode().toString());
            }

        } catch (CloudWatchException | IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

• Para API obtener más información, consulte GetMetricDatala AWS SDK for Java 2.x APIReferencia.

GetMetricStatistics

En el siguiente ejemplo de código, se muestra cómo usar GetMetricStatistics.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

    public static void getAndDisplayMetricStatistics(CloudWatchClient cw, String nameSpace, String metVal,
            String metricOption, String date, Dimension myDimension) {
        try {
            Instant start = Instant.parse(date);
            Instant endDate = Instant.now();

            GetMetricStatisticsRequest statisticsRequest = GetMetricStatisticsRequest.builder()
                    .endTime(endDate)
                    .startTime(start)
                    .dimensions(myDimension)
                    .metricName(metVal)
                    .namespace(nameSpace)
                    .period(86400)
                    .statistics(Statistic.fromValue(metricOption))
                    .build();

            GetMetricStatisticsResponse response = cw.getMetricStatistics(statisticsRequest);
            List<Datapoint> data = response.datapoints();
            if (!data.isEmpty()) {
                for (Datapoint datapoint : data) {
                    System.out
                            .println("Timestamp: " + datapoint.timestamp() + " Maximum value: " + datapoint.maximum());
                }
            } else {
                System.out.println("The returned data list is empty");
            }

        } catch (CloudWatchException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

• Para API obtener más información, consulte GetMetricStatisticsla AWS SDK for Java 2.x APIReferencia.

GetMetricWidgetImage

En el siguiente ejemplo de código, se muestra cómo usar GetMetricWidgetImage.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

    public static void getAndOpenMetricImage(CloudWatchClient cw, String fileName) {
        System.out.println("Getting Image data for custom metric.");
        try {
            String myJSON = "{\n" +
                    "  \"title\": \"Example Metric Graph\",\n" +
                    "  \"view\": \"timeSeries\",\n" +
                    "  \"stacked \": false,\n" +
                    "  \"period\": 10,\n" +
                    "  \"width\": 1400,\n" +
                    "  \"height\": 600,\n" +
                    "  \"metrics\": [\n" +
                    "    [\n" +
                    "      \"AWS/Billing\",\n" +
                    "      \"EstimatedCharges\",\n" +
                    "      \"Currency\",\n" +
                    "      \"USD\"\n" +
                    "    ]\n" +
                    "  ]\n" +
                    "}";

            GetMetricWidgetImageRequest imageRequest = GetMetricWidgetImageRequest.builder()
                    .metricWidget(myJSON)
                    .build();

            GetMetricWidgetImageResponse response = cw.getMetricWidgetImage(imageRequest);
            SdkBytes sdkBytes = response.metricWidgetImage();
            byte[] bytes = sdkBytes.asByteArray();
            File outputFile = new File(fileName);
            try (FileOutputStream outputStream = new FileOutputStream(outputFile)) {
                outputStream.write(bytes);
            }

        } catch (CloudWatchException | IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

• Para API obtener más información, consulte GetMetricWidgetImagela AWS SDK for Java 2.x APIReferencia.

ListDashboards

En el siguiente ejemplo de código, se muestra cómo usar ListDashboards.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

    public static void listDashboards(CloudWatchClient cw) {
        try {
            ListDashboardsIterable listRes = cw.listDashboardsPaginator();
            listRes.stream()
                    .flatMap(r -> r.dashboardEntries().stream())
                    .forEach(entry -> {
                        System.out.println("Dashboard name is: " + entry.dashboardName());
                        System.out.println("Dashboard ARN is: " + entry.dashboardArn());
                    });

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

• Para API obtener más información, consulte ListDashboardsla AWS SDK for Java 2.x APIReferencia.

ListMetrics

En el siguiente ejemplo de código, se muestra cómo usar ListMetrics.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cloudwatch.CloudWatchClient;
import software.amazon.awssdk.services.cloudwatch.model.CloudWatchException;
import software.amazon.awssdk.services.cloudwatch.model.ListMetricsRequest;
import software.amazon.awssdk.services.cloudwatch.model.ListMetricsResponse;
import software.amazon.awssdk.services.cloudwatch.model.Metric;

/**
 * Before running this Java V2 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-java/latest/developer-guide/get-started.html
 */
public class ListMetrics {
    public static void main(String[] args) {
        final String usage = """

                Usage:
                  <namespace>\s

                Where:
                  namespace - The namespace to filter against (for example, AWS/EC2).\s
                """;

        if (args.length != 1) {
            System.out.println(usage);
            System.exit(1);
        }

        String namespace = args[0];
        Region region = Region.US_EAST_1;
        CloudWatchClient cw = CloudWatchClient.builder()
                .region(region)
                .build();

        listMets(cw, namespace);
        cw.close();
    }

    public static void listMets(CloudWatchClient cw, String namespace) {
        boolean done = false;
        String nextToken = null;

        try {
            while (!done) {

                ListMetricsResponse response;
                if (nextToken == null) {
                    ListMetricsRequest request = ListMetricsRequest.builder()
                            .namespace(namespace)
                            .build();

                    response = cw.listMetrics(request);
                } else {
                    ListMetricsRequest request = ListMetricsRequest.builder()
                            .namespace(namespace)
                            .nextToken(nextToken)
                            .build();

                    response = cw.listMetrics(request);
                }

                for (Metric metric : response.metrics()) {
                    System.out.printf("Retrieved metric %s", metric.metricName());
                    System.out.println();
                }

                if (response.nextToken() == null) {
                    done = true;
                } else {
                    nextToken = response.nextToken();
                }
            }

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}

• Para API obtener más información, consulte ListMetricsla AWS SDK for Java 2.x APIReferencia.

PutAnomalyDetector

En el siguiente ejemplo de código, se muestra cómo usar PutAnomalyDetector.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

    public static void addAnomalyDetector(CloudWatchClient cw, String fileName) {
        try {
            // Read values from the JSON file.
            JsonParser parser = new JsonFactory().createParser(new File(fileName));
            com.fasterxml.jackson.databind.JsonNode rootNode = new ObjectMapper().readTree(parser);
            String customMetricNamespace = rootNode.findValue("customMetricNamespace").asText();
            String customMetricName = rootNode.findValue("customMetricName").asText();

            SingleMetricAnomalyDetector singleMetricAnomalyDetector = SingleMetricAnomalyDetector.builder()
                    .metricName(customMetricName)
                    .namespace(customMetricNamespace)
                    .stat("Maximum")
                    .build();

            PutAnomalyDetectorRequest anomalyDetectorRequest = PutAnomalyDetectorRequest.builder()
                    .singleMetricAnomalyDetector(singleMetricAnomalyDetector)
                    .build();

            cw.putAnomalyDetector(anomalyDetectorRequest);
            System.out.println("Added anomaly detector for metric " + customMetricName + ".");

        } catch (CloudWatchException | IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

• Para API obtener más información, consulte PutAnomalyDetectorla AWS SDK for Java 2.x APIReferencia.

PutDashboard

En el siguiente ejemplo de código, se muestra cómo usar PutDashboard.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

    public static void createDashboardWithMetrics(CloudWatchClient cw, String dashboardName, String fileName) {
        try {
            PutDashboardRequest dashboardRequest = PutDashboardRequest.builder()
                    .dashboardName(dashboardName)
                    .dashboardBody(readFileAsString(fileName))
                    .build();

            PutDashboardResponse response = cw.putDashboard(dashboardRequest);
            System.out.println(dashboardName + " was successfully created.");
            List<DashboardValidationMessage> messages = response.dashboardValidationMessages();
            if (messages.isEmpty()) {
                System.out.println("There are no messages in the new Dashboard");
            } else {
                for (DashboardValidationMessage message : messages) {
                    System.out.println("Message is: " + message.message());
                }
            }

        } catch (CloudWatchException | IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

• Para API obtener más información, consulte PutDashboardla AWS SDK for Java 2.x APIReferencia.

PutMetricAlarm

En el siguiente ejemplo de código, se muestra cómo usar PutMetricAlarm.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

    public static String createAlarm(CloudWatchClient cw, String fileName) {
        try {
            // Read values from the JSON file.
            JsonParser parser = new JsonFactory().createParser(new File(fileName));
            com.fasterxml.jackson.databind.JsonNode rootNode = new ObjectMapper().readTree(parser);
            String customMetricNamespace = rootNode.findValue("customMetricNamespace").asText();
            String customMetricName = rootNode.findValue("customMetricName").asText();
            String alarmName = rootNode.findValue("exampleAlarmName").asText();
            String emailTopic = rootNode.findValue("emailTopic").asText();
            String accountId = rootNode.findValue("accountId").asText();
            String region = rootNode.findValue("region").asText();

            // Create a List for alarm actions.
            List<String> alarmActions = new ArrayList<>();
            alarmActions.add("arn:aws:sns:" + region + ":" + accountId + ":" + emailTopic);
            PutMetricAlarmRequest alarmRequest = PutMetricAlarmRequest.builder()
                    .alarmActions(alarmActions)
                    .alarmDescription("Example metric alarm")
                    .alarmName(alarmName)
                    .comparisonOperator(ComparisonOperator.GREATER_THAN_OR_EQUAL_TO_THRESHOLD)
                    .threshold(100.00)
                    .metricName(customMetricName)
                    .namespace(customMetricNamespace)
                    .evaluationPeriods(1)
                    .period(10)
                    .statistic("Maximum")
                    .datapointsToAlarm(1)
                    .treatMissingData("ignore")
                    .build();

            cw.putMetricAlarm(alarmRequest);
            System.out.println(alarmName + " was successfully created!");
            return alarmName;

        } catch (CloudWatchException | IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
        return "";
    }

• Para API obtener más información, consulte PutMetricAlarmla AWS SDK for Java 2.x APIReferencia.

PutMetricData

En el siguiente ejemplo de código, se muestra cómo usar PutMetricData.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

    public static void addMetricDataForAlarm(CloudWatchClient cw, String fileName) {
        try {
            // Read values from the JSON file.
            JsonParser parser = new JsonFactory().createParser(new File(fileName));
            com.fasterxml.jackson.databind.JsonNode rootNode = new ObjectMapper().readTree(parser);
            String customMetricNamespace = rootNode.findValue("customMetricNamespace").asText();
            String customMetricName = rootNode.findValue("customMetricName").asText();

            // Set an Instant object.
            String time = ZonedDateTime.now(ZoneOffset.UTC).format(DateTimeFormatter.ISO_INSTANT);
            Instant instant = Instant.parse(time);

            MetricDatum datum = MetricDatum.builder()
                    .metricName(customMetricName)
                    .unit(StandardUnit.NONE)
                    .value(1001.00)
                    .timestamp(instant)
                    .build();

            MetricDatum datum2 = MetricDatum.builder()
                    .metricName(customMetricName)
                    .unit(StandardUnit.NONE)
                    .value(1002.00)
                    .timestamp(instant)
                    .build();

            List<MetricDatum> metricDataList = new ArrayList<>();
            metricDataList.add(datum);
            metricDataList.add(datum2);

            PutMetricDataRequest request = PutMetricDataRequest.builder()
                    .namespace(customMetricNamespace)
                    .metricData(metricDataList)
                    .build();

            cw.putMetricData(request);
            System.out.println("Added metric values for for metric " + customMetricName);

        } catch (CloudWatchException | IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

• Para API obtener más información, consulte PutMetricDatala AWS SDK for Java 2.x APIReferencia.

Escenarios

Primeros pasos para usar las métricas, los paneles y las alarmas

En el siguiente ejemplo de código, se muestra cómo:

• Enumera los espacios de CloudWatch nombres y las métricas.

• Obtener estadísticas para una métrica y para la facturación estimada.

• Crear y actualizar un panel.

• Crear y agregar datos a una métrica.

• Crear y activar una alarma y, a continuación, consultar el historial de alarmas.

• Crear un detector de anomalías.

• Realice una imagen métrica y, luego, limpie los recursos.

SDKpara Java 2.x

nota

Hay más información. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.ObjectMapper;
import software.amazon.awssdk.auth.credentials.ProfileCredentialsProvider;
import software.amazon.awssdk.core.SdkBytes;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.cloudwatch.CloudWatchClient;
import software.amazon.awssdk.services.cloudwatch.model.AlarmHistoryItem;
import software.amazon.awssdk.services.cloudwatch.model.AlarmType;
import software.amazon.awssdk.services.cloudwatch.model.AnomalyDetector;
import software.amazon.awssdk.services.cloudwatch.model.CloudWatchException;
import software.amazon.awssdk.services.cloudwatch.model.ComparisonOperator;
import software.amazon.awssdk.services.cloudwatch.model.DashboardValidationMessage;
import software.amazon.awssdk.services.cloudwatch.model.Datapoint;
import software.amazon.awssdk.services.cloudwatch.model.DeleteAlarmsRequest;
import software.amazon.awssdk.services.cloudwatch.model.DeleteAnomalyDetectorRequest;
import software.amazon.awssdk.services.cloudwatch.model.DeleteDashboardsRequest;
import software.amazon.awssdk.services.cloudwatch.model.DescribeAlarmHistoryRequest;
import software.amazon.awssdk.services.cloudwatch.model.DescribeAlarmHistoryResponse;
import software.amazon.awssdk.services.cloudwatch.model.DescribeAlarmsForMetricRequest;
import software.amazon.awssdk.services.cloudwatch.model.DescribeAlarmsForMetricResponse;
import software.amazon.awssdk.services.cloudwatch.model.DescribeAlarmsRequest;
import software.amazon.awssdk.services.cloudwatch.model.DescribeAlarmsResponse;
import software.amazon.awssdk.services.cloudwatch.model.DescribeAnomalyDetectorsRequest;
import software.amazon.awssdk.services.cloudwatch.model.DescribeAnomalyDetectorsResponse;
import software.amazon.awssdk.services.cloudwatch.model.Dimension;
import software.amazon.awssdk.services.cloudwatch.model.GetMetricDataRequest;
import software.amazon.awssdk.services.cloudwatch.model.GetMetricDataResponse;
import software.amazon.awssdk.services.cloudwatch.model.GetMetricStatisticsRequest;
import software.amazon.awssdk.services.cloudwatch.model.GetMetricStatisticsResponse;
import software.amazon.awssdk.services.cloudwatch.model.GetMetricWidgetImageRequest;
import software.amazon.awssdk.services.cloudwatch.model.GetMetricWidgetImageResponse;
import software.amazon.awssdk.services.cloudwatch.model.HistoryItemType;
import software.amazon.awssdk.services.cloudwatch.model.ListMetricsRequest;
import software.amazon.awssdk.services.cloudwatch.model.ListMetricsResponse;
import software.amazon.awssdk.services.cloudwatch.model.Metric;
import software.amazon.awssdk.services.cloudwatch.model.MetricAlarm;
import software.amazon.awssdk.services.cloudwatch.model.MetricDataQuery;
import software.amazon.awssdk.services.cloudwatch.model.MetricDataResult;
import software.amazon.awssdk.services.cloudwatch.model.MetricDatum;
import software.amazon.awssdk.services.cloudwatch.model.MetricStat;
import software.amazon.awssdk.services.cloudwatch.model.PutAnomalyDetectorRequest;
import software.amazon.awssdk.services.cloudwatch.model.PutDashboardRequest;
import software.amazon.awssdk.services.cloudwatch.model.PutDashboardResponse;
import software.amazon.awssdk.services.cloudwatch.model.PutMetricAlarmRequest;
import software.amazon.awssdk.services.cloudwatch.model.PutMetricDataRequest;
import software.amazon.awssdk.services.cloudwatch.model.ScanBy;
import software.amazon.awssdk.services.cloudwatch.model.SingleMetricAnomalyDetector;
import software.amazon.awssdk.services.cloudwatch.model.StandardUnit;
import software.amazon.awssdk.services.cloudwatch.model.Statistic;
import software.amazon.awssdk.services.cloudwatch.paginators.ListDashboardsIterable;
import software.amazon.awssdk.services.cloudwatch.paginators.ListMetricsIterable;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.time.Instant;
import java.time.ZoneOffset;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoUnit;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

/**
 * Before running this Java V2 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-java/latest/developer-guide/get-started.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 Java code example performs the following tasks:
 *
 * 1. List available namespaces from Amazon CloudWatch.
 * 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.
 */
public class CloudWatchScenario {
    public static final String DASHES = new String(new char[80]).replace("\0", "-");

    public static void main(String[] args) throws IOException {
        final String usage = """

                Usage:
                  <myDate> <costDateWeek> <dashboardName> <dashboardJson> <dashboardAdd> <settings> <metricImage> \s

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

        if (args.length != 7) {
            System.out.println(usage);
            System.exit(1);
        }

        Region region = Region.US_EAST_1;
        String myDate = args[0];
        String costDateWeek = args[1];
        String dashboardName = args[2];
        String dashboardJson = args[3];
        String dashboardAdd = args[4];
        String settings = args[5];
        String metricImage = args[6];

        Double dataPoint = Double.parseDouble("10.0");
        Scanner sc = new Scanner(System.in);
        CloudWatchClient cw = CloudWatchClient.builder()
                .region(region)
                .credentialsProvider(ProfileCredentialsProvider.create())
                .build();

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

        System.out.println(DASHES);
        System.out.println(
                "1. List at least five available unique namespaces from Amazon CloudWatch. Select one from the list.");
        ArrayList<String> list = listNameSpaces(cw);
        for (int z = 0; z < 5; z++) {
            int index = z + 1;
            System.out.println("    " + index + ". " + list.get(z));
        }

        String selectedNamespace = "";
        String selectedMetrics = "";
        int num = Integer.parseInt(sc.nextLine());
        if (1 <= num && num <= 5) {
            selectedNamespace = list.get(num - 1);
        } else {
            System.out.println("You did not select a valid option.");
            System.exit(1);
        }
        System.out.println("You selected " + selectedNamespace);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("2. List available metrics within the selected namespace and select one from the list.");
        ArrayList<String> metList = listMets(cw, selectedNamespace);
        for (int z = 0; z < 5; z++) {
            int index = z + 1;
            System.out.println("    " + index + ". " + metList.get(z));
        }
        num = Integer.parseInt(sc.nextLine());
        if (1 <= num && num <= 5) {
            selectedMetrics = metList.get(num - 1);
        } else {
            System.out.println("You did not select a valid option.");
            System.exit(1);
        }
        System.out.println("You selected " + selectedMetrics);
        Dimension myDimension = getSpecificMet(cw, selectedNamespace);
        System.out.println(DASHES);

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

        for (int t = 0; t < 5; t++) {
            System.out.println("    " + (t + 1) + ". " + statTypes.get(t));
        }
        System.out.println("Select a metric statistic by entering a number from the preceding list:");
        num = Integer.parseInt(sc.nextLine());
        if (1 <= num && num <= 5) {
            metricOption = statTypes.get(num - 1);
        } else {
            System.out.println("You did not select a valid option.");
            System.exit(1);
        }
        System.out.println("You selected " + metricOption);
        getAndDisplayMetricStatistics(cw, selectedNamespace, selectedMetrics, metricOption, myDate, myDimension);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("4. Get CloudWatch estimated billing for the last week.");
        getMetricStatistics(cw, costDateWeek);
        System.out.println(DASHES);

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

        System.out.println(DASHES);
        System.out.println("6. List dashboards using a paginator.");
        listDashboards(cw);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("7. Create a new custom metric by adding data to it.");
        createNewCustomMetric(cw, dataPoint);
        System.out.println(DASHES);

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

        System.out.println(DASHES);
        System.out.println("9. Create an alarm for the custom metric.");
        String alarmName = createAlarm(cw, settings);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("10. Describe ten current alarms.");
        describeAlarms(cw);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("11. Get current data for new custom metric.");
        getCustomMetricData(cw, settings);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("12. Push data into the custom metric to trigger the alarm.");
        addMetricDataForAlarm(cw, settings);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("13. Check the alarm state using the action DescribeAlarmsForMetric.");
        checkForMetricAlarm(cw, settings);
        System.out.println(DASHES);

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

        System.out.println(DASHES);
        System.out.println("15. Add an anomaly detector for the custom metric.");
        addAnomalyDetector(cw, settings);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("16. Describe current anomaly detectors.");
        describeAnomalyDetectors(cw, settings);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("17. Get a metric image for the custom metric.");
        getAndOpenMetricImage(cw, metricImage);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("18. Clean up the Amazon CloudWatch resources.");
        deleteDashboard(cw, dashboardName);
        deleteCWAlarm(cw, alarmName);
        deleteAnomalyDetector(cw, settings);
        System.out.println(DASHES);

        System.out.println(DASHES);
        System.out.println("The Amazon CloudWatch example scenario is complete.");
        System.out.println(DASHES);
        cw.close();
    }

    public static void deleteAnomalyDetector(CloudWatchClient cw, String fileName) {
        try {
            // Read values from the JSON file.
            JsonParser parser = new JsonFactory().createParser(new File(fileName));
            com.fasterxml.jackson.databind.JsonNode rootNode = new ObjectMapper().readTree(parser);
            String customMetricNamespace = rootNode.findValue("customMetricNamespace").asText();
            String customMetricName = rootNode.findValue("customMetricName").asText();

            SingleMetricAnomalyDetector singleMetricAnomalyDetector = SingleMetricAnomalyDetector.builder()
                    .metricName(customMetricName)
                    .namespace(customMetricNamespace)
                    .stat("Maximum")
                    .build();

            DeleteAnomalyDetectorRequest request = DeleteAnomalyDetectorRequest.builder()
                    .singleMetricAnomalyDetector(singleMetricAnomalyDetector)
                    .build();

            cw.deleteAnomalyDetector(request);
            System.out.println("Successfully deleted the Anomaly Detector.");

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void deleteCWAlarm(CloudWatchClient cw, String alarmName) {
        try {
            DeleteAlarmsRequest request = DeleteAlarmsRequest.builder()
                    .alarmNames(alarmName)
                    .build();

            cw.deleteAlarms(request);
            System.out.println("Successfully deleted alarm " + alarmName);

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

    public static void deleteDashboard(CloudWatchClient cw, String dashboardName) {
        try {
            DeleteDashboardsRequest dashboardsRequest = DeleteDashboardsRequest.builder()
                    .dashboardNames(dashboardName)
                    .build();
            cw.deleteDashboards(dashboardsRequest);
            System.out.println(dashboardName + " was successfully deleted.");

        } catch (CloudWatchException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

    public static void getAndOpenMetricImage(CloudWatchClient cw, String fileName) {
        System.out.println("Getting Image data for custom metric.");
        try {
            String myJSON = "{\n" +
                    "  \"title\": \"Example Metric Graph\",\n" +
                    "  \"view\": \"timeSeries\",\n" +
                    "  \"stacked \": false,\n" +
                    "  \"period\": 10,\n" +
                    "  \"width\": 1400,\n" +
                    "  \"height\": 600,\n" +
                    "  \"metrics\": [\n" +
                    "    [\n" +
                    "      \"AWS/Billing\",\n" +
                    "      \"EstimatedCharges\",\n" +
                    "      \"Currency\",\n" +
                    "      \"USD\"\n" +
                    "    ]\n" +
                    "  ]\n" +
                    "}";

            GetMetricWidgetImageRequest imageRequest = GetMetricWidgetImageRequest.builder()
                    .metricWidget(myJSON)
                    .build();

            GetMetricWidgetImageResponse response = cw.getMetricWidgetImage(imageRequest);
            SdkBytes sdkBytes = response.metricWidgetImage();
            byte[] bytes = sdkBytes.asByteArray();
            File outputFile = new File(fileName);
            try (FileOutputStream outputStream = new FileOutputStream(outputFile)) {
                outputStream.write(bytes);
            }

        } catch (CloudWatchException | IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

    public static void describeAnomalyDetectors(CloudWatchClient cw, String fileName) {
        try {
            // Read values from the JSON file.
            JsonParser parser = new JsonFactory().createParser(new File(fileName));
            com.fasterxml.jackson.databind.JsonNode rootNode = new ObjectMapper().readTree(parser);
            String customMetricNamespace = rootNode.findValue("customMetricNamespace").asText();
            String customMetricName = rootNode.findValue("customMetricName").asText();
            DescribeAnomalyDetectorsRequest detectorsRequest = DescribeAnomalyDetectorsRequest.builder()
                    .maxResults(10)
                    .metricName(customMetricName)
                    .namespace(customMetricNamespace)
                    .build();

            DescribeAnomalyDetectorsResponse response = cw.describeAnomalyDetectors(detectorsRequest);
            List<AnomalyDetector> anomalyDetectorList = response.anomalyDetectors();
            for (AnomalyDetector detector : anomalyDetectorList) {
                System.out.println("Metric name: " + detector.singleMetricAnomalyDetector().metricName());
                System.out.println("State: " + detector.stateValue());
            }

        } catch (CloudWatchException | IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

    public static void addAnomalyDetector(CloudWatchClient cw, String fileName) {
        try {
            // Read values from the JSON file.
            JsonParser parser = new JsonFactory().createParser(new File(fileName));
            com.fasterxml.jackson.databind.JsonNode rootNode = new ObjectMapper().readTree(parser);
            String customMetricNamespace = rootNode.findValue("customMetricNamespace").asText();
            String customMetricName = rootNode.findValue("customMetricName").asText();

            SingleMetricAnomalyDetector singleMetricAnomalyDetector = SingleMetricAnomalyDetector.builder()
                    .metricName(customMetricName)
                    .namespace(customMetricNamespace)
                    .stat("Maximum")
                    .build();

            PutAnomalyDetectorRequest anomalyDetectorRequest = PutAnomalyDetectorRequest.builder()
                    .singleMetricAnomalyDetector(singleMetricAnomalyDetector)
                    .build();

            cw.putAnomalyDetector(anomalyDetectorRequest);
            System.out.println("Added anomaly detector for metric " + customMetricName + ".");

        } catch (CloudWatchException | IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

    public static void getAlarmHistory(CloudWatchClient cw, String fileName, String date) {
        try {
            // Read values from the JSON file.
            JsonParser parser = new JsonFactory().createParser(new File(fileName));
            com.fasterxml.jackson.databind.JsonNode rootNode = new ObjectMapper().readTree(parser);
            String alarmName = rootNode.findValue("exampleAlarmName").asText();

            Instant start = Instant.parse(date);
            Instant endDate = Instant.now();
            DescribeAlarmHistoryRequest historyRequest = DescribeAlarmHistoryRequest.builder()
                    .startDate(start)
                    .endDate(endDate)
                    .alarmName(alarmName)
                    .historyItemType(HistoryItemType.ACTION)
                    .build();

            DescribeAlarmHistoryResponse response = cw.describeAlarmHistory(historyRequest);
            List<AlarmHistoryItem> historyItems = response.alarmHistoryItems();
            if (historyItems.isEmpty()) {
                System.out.println("No alarm history data found for " + alarmName + ".");
            } else {
                for (AlarmHistoryItem item : historyItems) {
                    System.out.println("History summary: " + item.historySummary());
                    System.out.println("Time stamp: " + item.timestamp());
                }
            }

        } catch (CloudWatchException | IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

    public static void checkForMetricAlarm(CloudWatchClient cw, String fileName) {
        try {
            // Read values from the JSON file.
            JsonParser parser = new JsonFactory().createParser(new File(fileName));
            com.fasterxml.jackson.databind.JsonNode rootNode = new ObjectMapper().readTree(parser);
            String customMetricNamespace = rootNode.findValue("customMetricNamespace").asText();
            String customMetricName = rootNode.findValue("customMetricName").asText();
            boolean hasAlarm = false;
            int retries = 10;

            DescribeAlarmsForMetricRequest metricRequest = DescribeAlarmsForMetricRequest.builder()
                    .metricName(customMetricName)
                    .namespace(customMetricNamespace)
                    .build();

            while (!hasAlarm && retries > 0) {
                DescribeAlarmsForMetricResponse response = cw.describeAlarmsForMetric(metricRequest);
                hasAlarm = response.hasMetricAlarms();
                retries--;
                Thread.sleep(20000);
                System.out.println(".");
            }
            if (!hasAlarm)
                System.out.println("No Alarm state found for " + customMetricName + " after 10 retries.");
            else
                System.out.println("Alarm state found for " + customMetricName + ".");

        } catch (CloudWatchException | IOException | InterruptedException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

    public static void addMetricDataForAlarm(CloudWatchClient cw, String fileName) {
        try {
            // Read values from the JSON file.
            JsonParser parser = new JsonFactory().createParser(new File(fileName));
            com.fasterxml.jackson.databind.JsonNode rootNode = new ObjectMapper().readTree(parser);
            String customMetricNamespace = rootNode.findValue("customMetricNamespace").asText();
            String customMetricName = rootNode.findValue("customMetricName").asText();

            // Set an Instant object.
            String time = ZonedDateTime.now(ZoneOffset.UTC).format(DateTimeFormatter.ISO_INSTANT);
            Instant instant = Instant.parse(time);

            MetricDatum datum = MetricDatum.builder()
                    .metricName(customMetricName)
                    .unit(StandardUnit.NONE)
                    .value(1001.00)
                    .timestamp(instant)
                    .build();

            MetricDatum datum2 = MetricDatum.builder()
                    .metricName(customMetricName)
                    .unit(StandardUnit.NONE)
                    .value(1002.00)
                    .timestamp(instant)
                    .build();

            List<MetricDatum> metricDataList = new ArrayList<>();
            metricDataList.add(datum);
            metricDataList.add(datum2);

            PutMetricDataRequest request = PutMetricDataRequest.builder()
                    .namespace(customMetricNamespace)
                    .metricData(metricDataList)
                    .build();

            cw.putMetricData(request);
            System.out.println("Added metric values for for metric " + customMetricName);

        } catch (CloudWatchException | IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

    public static void getCustomMetricData(CloudWatchClient cw, String fileName) {
        try {
            // Read values from the JSON file.
            JsonParser parser = new JsonFactory().createParser(new File(fileName));
            com.fasterxml.jackson.databind.JsonNode rootNode = new ObjectMapper().readTree(parser);
            String customMetricNamespace = rootNode.findValue("customMetricNamespace").asText();
            String customMetricName = rootNode.findValue("customMetricName").asText();

            // Set the date.
            Instant nowDate = Instant.now();

            long hours = 1;
            long minutes = 30;
            Instant date2 = nowDate.plus(hours, ChronoUnit.HOURS).plus(minutes,
                    ChronoUnit.MINUTES);

            Metric met = Metric.builder()
                    .metricName(customMetricName)
                    .namespace(customMetricNamespace)
                    .build();

            MetricStat metStat = MetricStat.builder()
                    .stat("Maximum")
                    .period(1)
                    .metric(met)
                    .build();

            MetricDataQuery dataQUery = MetricDataQuery.builder()
                    .metricStat(metStat)
                    .id("foo2")
                    .returnData(true)
                    .build();

            List<MetricDataQuery> dq = new ArrayList<>();
            dq.add(dataQUery);

            GetMetricDataRequest getMetReq = GetMetricDataRequest.builder()
                    .maxDatapoints(10)
                    .scanBy(ScanBy.TIMESTAMP_DESCENDING)
                    .startTime(nowDate)
                    .endTime(date2)
                    .metricDataQueries(dq)
                    .build();

            GetMetricDataResponse response = cw.getMetricData(getMetReq);
            List<MetricDataResult> data = response.metricDataResults();
            for (MetricDataResult item : data) {
                System.out.println("The label is " + item.label());
                System.out.println("The status code is " + item.statusCode().toString());
            }

        } catch (CloudWatchException | IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

    public static void describeAlarms(CloudWatchClient cw) {
        try {
            List<AlarmType> typeList = new ArrayList<>();
            typeList.add(AlarmType.METRIC_ALARM);

            DescribeAlarmsRequest alarmsRequest = DescribeAlarmsRequest.builder()
                    .alarmTypes(typeList)
                    .maxRecords(10)
                    .build();

            DescribeAlarmsResponse response = cw.describeAlarms(alarmsRequest);
            List<MetricAlarm> alarmList = response.metricAlarms();
            for (MetricAlarm alarm : alarmList) {
                System.out.println("Alarm name: " + alarm.alarmName());
                System.out.println("Alarm description: " + alarm.alarmDescription());
            }
        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

    public static String createAlarm(CloudWatchClient cw, String fileName) {
        try {
            // Read values from the JSON file.
            JsonParser parser = new JsonFactory().createParser(new File(fileName));
            com.fasterxml.jackson.databind.JsonNode rootNode = new ObjectMapper().readTree(parser);
            String customMetricNamespace = rootNode.findValue("customMetricNamespace").asText();
            String customMetricName = rootNode.findValue("customMetricName").asText();
            String alarmName = rootNode.findValue("exampleAlarmName").asText();
            String emailTopic = rootNode.findValue("emailTopic").asText();
            String accountId = rootNode.findValue("accountId").asText();
            String region = rootNode.findValue("region").asText();

            // Create a List for alarm actions.
            List<String> alarmActions = new ArrayList<>();
            alarmActions.add("arn:aws:sns:" + region + ":" + accountId + ":" + emailTopic);
            PutMetricAlarmRequest alarmRequest = PutMetricAlarmRequest.builder()
                    .alarmActions(alarmActions)
                    .alarmDescription("Example metric alarm")
                    .alarmName(alarmName)
                    .comparisonOperator(ComparisonOperator.GREATER_THAN_OR_EQUAL_TO_THRESHOLD)
                    .threshold(100.00)
                    .metricName(customMetricName)
                    .namespace(customMetricNamespace)
                    .evaluationPeriods(1)
                    .period(10)
                    .statistic("Maximum")
                    .datapointsToAlarm(1)
                    .treatMissingData("ignore")
                    .build();

            cw.putMetricAlarm(alarmRequest);
            System.out.println(alarmName + " was successfully created!");
            return alarmName;

        } catch (CloudWatchException | IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
        return "";
    }

    public static void addMetricToDashboard(CloudWatchClient cw, String fileName, String dashboardName) {
        try {
            PutDashboardRequest dashboardRequest = PutDashboardRequest.builder()
                    .dashboardName(dashboardName)
                    .dashboardBody(readFileAsString(fileName))
                    .build();

            cw.putDashboard(dashboardRequest);
            System.out.println(dashboardName + " was successfully updated.");

        } catch (CloudWatchException | IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

    public static void createNewCustomMetric(CloudWatchClient cw, Double dataPoint) {
        try {
            Dimension dimension = Dimension.builder()
                    .name("UNIQUE_PAGES")
                    .value("URLS")
                    .build();

            // Set an Instant object.
            String time = ZonedDateTime.now(ZoneOffset.UTC).format(DateTimeFormatter.ISO_INSTANT);
            Instant instant = Instant.parse(time);

            MetricDatum datum = MetricDatum.builder()
                    .metricName("PAGES_VISITED")
                    .unit(StandardUnit.NONE)
                    .value(dataPoint)
                    .timestamp(instant)
                    .dimensions(dimension)
                    .build();

            PutMetricDataRequest request = PutMetricDataRequest.builder()
                    .namespace("SITE/TRAFFIC")
                    .metricData(datum)
                    .build();

            cw.putMetricData(request);
            System.out.println("Added metric values for for metric PAGES_VISITED");

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

    public static void listDashboards(CloudWatchClient cw) {
        try {
            ListDashboardsIterable listRes = cw.listDashboardsPaginator();
            listRes.stream()
                    .flatMap(r -> r.dashboardEntries().stream())
                    .forEach(entry -> {
                        System.out.println("Dashboard name is: " + entry.dashboardName());
                        System.out.println("Dashboard ARN is: " + entry.dashboardArn());
                    });

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

    public static void createDashboardWithMetrics(CloudWatchClient cw, String dashboardName, String fileName) {
        try {
            PutDashboardRequest dashboardRequest = PutDashboardRequest.builder()
                    .dashboardName(dashboardName)
                    .dashboardBody(readFileAsString(fileName))
                    .build();

            PutDashboardResponse response = cw.putDashboard(dashboardRequest);
            System.out.println(dashboardName + " was successfully created.");
            List<DashboardValidationMessage> messages = response.dashboardValidationMessages();
            if (messages.isEmpty()) {
                System.out.println("There are no messages in the new Dashboard");
            } else {
                for (DashboardValidationMessage message : messages) {
                    System.out.println("Message is: " + message.message());
                }
            }

        } catch (CloudWatchException | IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

    public static String readFileAsString(String file) throws IOException {
        return new String(Files.readAllBytes(Paths.get(file)));
    }

    public static void getMetricStatistics(CloudWatchClient cw, String costDateWeek) {
        try {
            Instant start = Instant.parse(costDateWeek);
            Instant endDate = Instant.now();
            Dimension dimension = Dimension.builder()
                    .name("Currency")
                    .value("USD")
                    .build();

            List<Dimension> dimensionList = new ArrayList<>();
            dimensionList.add(dimension);
            GetMetricStatisticsRequest statisticsRequest = GetMetricStatisticsRequest.builder()
                    .metricName("EstimatedCharges")
                    .namespace("AWS/Billing")
                    .dimensions(dimensionList)
                    .statistics(Statistic.MAXIMUM)
                    .startTime(start)
                    .endTime(endDate)
                    .period(86400)
                    .build();

            GetMetricStatisticsResponse response = cw.getMetricStatistics(statisticsRequest);
            List<Datapoint> data = response.datapoints();
            if (!data.isEmpty()) {
                for (Datapoint datapoint : data) {
                    System.out
                            .println("Timestamp: " + datapoint.timestamp() + " Maximum value: " + datapoint.maximum());
                }
            } else {
                System.out.println("The returned data list is empty");
            }

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

    public static void getAndDisplayMetricStatistics(CloudWatchClient cw, String nameSpace, String metVal,
            String metricOption, String date, Dimension myDimension) {
        try {
            Instant start = Instant.parse(date);
            Instant endDate = Instant.now();

            GetMetricStatisticsRequest statisticsRequest = GetMetricStatisticsRequest.builder()
                    .endTime(endDate)
                    .startTime(start)
                    .dimensions(myDimension)
                    .metricName(metVal)
                    .namespace(nameSpace)
                    .period(86400)
                    .statistics(Statistic.fromValue(metricOption))
                    .build();

            GetMetricStatisticsResponse response = cw.getMetricStatistics(statisticsRequest);
            List<Datapoint> data = response.datapoints();
            if (!data.isEmpty()) {
                for (Datapoint datapoint : data) {
                    System.out
                            .println("Timestamp: " + datapoint.timestamp() + " Maximum value: " + datapoint.maximum());
                }
            } else {
                System.out.println("The returned data list is empty");
            }

        } catch (CloudWatchException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

    public static Dimension getSpecificMet(CloudWatchClient cw, String namespace) {
        try {
            ListMetricsRequest request = ListMetricsRequest.builder()
                    .namespace(namespace)
                    .build();

            ListMetricsResponse response = cw.listMetrics(request);
            List<Metric> myList = response.metrics();
            Metric metric = myList.get(0);
            return metric.dimensions().get(0);

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
        return null;
    }

    public static ArrayList<String> listMets(CloudWatchClient cw, String namespace) {
        try {
            ArrayList<String> metList = new ArrayList<>();
            ListMetricsRequest request = ListMetricsRequest.builder()
                    .namespace(namespace)
                    .build();

            ListMetricsIterable listRes = cw.listMetricsPaginator(request);
            listRes.stream()
                    .flatMap(r -> r.metrics().stream())
                    .forEach(metrics -> metList.add(metrics.metricName()));

            return metList;

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
        return null;
    }

    public static ArrayList<String> listNameSpaces(CloudWatchClient cw) {
        try {
            ArrayList<String> nameSpaceList = new ArrayList<>();
            ListMetricsRequest request = ListMetricsRequest.builder()
                    .build();

            ListMetricsIterable listRes = cw.listMetricsPaginator(request);
            listRes.stream()
                    .flatMap(r -> r.metrics().stream())
                    .forEach(metrics -> {
                        String data = metrics.namespace();
                        if (!nameSpaceList.contains(data)) {
                            nameSpaceList.add(data);
                        }
                    });

            return nameSpaceList;
        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
        return null;
    }
}

• Para API obtener más información, consulte los siguientes temas en AWS SDK for Java 2.x APIReference.

  • DeleteAlarms

  • DeleteAnomalyDetector

  • DeleteDashboards

  • DescribeAlarmHistory

  • DescribeAlarms

  • DescribeAlarmsForMetric

  • DescribeAnomalyDetectors

  • GetMetricData

  • GetMetricStatistics

  • GetMetricWidgetImage

  • ListMetrics

  • PutAnomalyDetector

  • PutDashboard

  • PutMetricAlarm

  • PutMetricData