CloudWatch Beispiele mit SDK for Java 2.x

Die folgenden Codebeispiele zeigen Ihnen, wie Sie mithilfe von AWS SDK for Java 2.x with Aktionen ausführen und allgemeine Szenarien implementieren CloudWatch.

Aktionen sind Codeauszüge aus größeren Programmen und müssen im Kontext ausgeführt werden. Während Aktionen Ihnen zeigen, wie Sie einzelne Servicefunktionen aufrufen, können Sie Aktionen im Kontext der zugehörigen Szenarien und serviceübergreifenden Beispiele sehen.

Szenarien sind Codebeispiele, die Ihnen zeigen, wie Sie eine bestimmte Aufgabe ausführen können, indem Sie mehrere Funktionen innerhalb desselben Services aufrufen.

Jedes Beispiel enthält einen Link zu GitHub, wo Sie Anweisungen zum Einrichten und Ausführen des Codes im Kontext finden.

Erste Schritte

Hallo CloudWatch

Die folgenden Codebeispiele zeigen, wie Sie mit der Verwendung beginnen CloudWatch.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu GitHub. Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

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);
        }
    }
}

• Einzelheiten zur API finden Sie ListMetricsin der AWS SDK for Java 2.x API-Referenz.

Aktionen

DeleteAlarms

Das folgende Codebeispiel zeigt die VerwendungDeleteAlarms.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu GitHub. Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

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);
        }
    }
}

• Einzelheiten zur API finden Sie DeleteAlarmsin der AWS SDK for Java 2.x API-Referenz.

DeleteAnomalyDetector

Das folgende Codebeispiel zeigt die VerwendungDeleteAnomalyDetector.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu GitHub. Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

    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();
        }
    }

• Einzelheiten zur API finden Sie DeleteAnomalyDetectorin der AWS SDK for Java 2.x API-Referenz.

DeleteDashboards

Das folgende Codebeispiel zeigt die VerwendungDeleteDashboards.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu GitHub. Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

    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);
        }
    }

• Einzelheiten zur API finden Sie DeleteDashboardsin der AWS SDK for Java 2.x API-Referenz.

DescribeAlarmHistory

Das folgende Codebeispiel zeigt die VerwendungDescribeAlarmHistory.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu GitHub. Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

    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);
        }
    }

• Einzelheiten zur API finden Sie DescribeAlarmHistoryin der AWS SDK for Java 2.x API-Referenz.

DescribeAlarms

Das folgende Codebeispiel zeigt die VerwendungDescribeAlarms.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu GitHub. Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

    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);
        }
    }

• Einzelheiten zur API finden Sie DescribeAlarmsin der AWS SDK for Java 2.x API-Referenz.

DescribeAlarmsForMetric

Das folgende Codebeispiel zeigt die VerwendungDescribeAlarmsForMetric.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu GitHub. Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

    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);
        }
    }

• Einzelheiten zur API finden Sie DescribeAlarmsForMetricin der AWS SDK for Java 2.x API-Referenz.

DescribeAnomalyDetectors

Das folgende Codebeispiel zeigt die VerwendungDescribeAnomalyDetectors.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu GitHub. Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

    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);
        }
    }

• Einzelheiten zur API finden Sie DescribeAnomalyDetectorsin der AWS SDK for Java 2.x API-Referenz.

DisableAlarmActions

Das folgende Codebeispiel zeigt die VerwendungDisableAlarmActions.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu GitHub. Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

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);
        }
    }
}

• Einzelheiten zur API finden Sie DisableAlarmActionsin der AWS SDK for Java 2.x API-Referenz.

EnableAlarmActions

Das folgende Codebeispiel zeigt die VerwendungEnableAlarmActions.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu GitHub. Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

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);
        }
    }
}

• Einzelheiten zur API finden Sie EnableAlarmActionsin der AWS SDK for Java 2.x API-Referenz.

GetMetricData

Das folgende Codebeispiel zeigt die VerwendungGetMetricData.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu GitHub. Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

    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);
        }
    }

• Einzelheiten zur API finden Sie GetMetricDatain der AWS SDK for Java 2.x API-Referenz.

GetMetricStatistics

Das folgende Codebeispiel zeigt die VerwendungGetMetricStatistics.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu GitHub. Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

    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);
        }
    }

• Einzelheiten zur API finden Sie GetMetricStatisticsin der AWS SDK for Java 2.x API-Referenz.

GetMetricWidgetImage

Das folgende Codebeispiel zeigt die VerwendungGetMetricWidgetImage.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu GitHub. Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

    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);
        }
    }

• Einzelheiten zur API finden Sie GetMetricWidgetImagein der AWS SDK for Java 2.x API-Referenz.

ListDashboards

Das folgende Codebeispiel zeigt die VerwendungListDashboards.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu GitHub. Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

    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);
        }
    }

• Einzelheiten zur API finden Sie ListDashboardsin der AWS SDK for Java 2.x API-Referenz.

ListMetrics

Das folgende Codebeispiel zeigt die VerwendungListMetrics.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu GitHub. Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

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);
        }
    }
}

• Einzelheiten zur API finden Sie ListMetricsin der AWS SDK for Java 2.x API-Referenz.

PutAnomalyDetector

Das folgende Codebeispiel zeigt die VerwendungPutAnomalyDetector.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu GitHub. Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

    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);
        }
    }

• Einzelheiten zur API finden Sie PutAnomalyDetectorin der AWS SDK for Java 2.x API-Referenz.

PutDashboard

Das folgende Codebeispiel zeigt die VerwendungPutDashboard.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu GitHub. Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

    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);
        }
    }

• Einzelheiten zur API finden Sie PutDashboardin der AWS SDK for Java 2.x API-Referenz.

PutMetricAlarm

Das folgende Codebeispiel zeigt die VerwendungPutMetricAlarm.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu GitHub. Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

    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 "";
    }

• Einzelheiten zur API finden Sie PutMetricAlarmin der AWS SDK for Java 2.x API-Referenz.

PutMetricData

Das folgende Codebeispiel zeigt die VerwendungPutMetricData.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu GitHub. Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

    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);
        }
    }

• Einzelheiten zur API finden Sie PutMetricDatain der AWS SDK for Java 2.x API-Referenz.

Szenarien

Erste Schritte mit CloudWatch-Metriken, -Dashboards und -Alarmen

Wie das aussehen kann, sehen Sie am nachfolgenden Beispielcode:

• Listet CloudWatch Namespaces und Metriken auf.

• Rufen Sie Statistiken für eine Metrik und die geschätzte Fakturierung ab.

• Erstellen und aktualisieren Sie ein Dashboard.

• Erstellen Sie eine Metrik und fügen Sie ihr Daten hinzu.

• Erstellen und lösen Sie einen Alarm aus und zeigen Sie dann den Alarmverlauf an.

• Fügen Sie einen Anomaliedetektor hinzu.

• Ermitteln Sie ein Metrik-Image, dann bereinigen Sie die Ressourcen.

SDK für Java 2.x

Anmerkung

Es gibt noch mehr dazu. GitHub Sie sehen das vollständige Beispiel und erfahren, wie Sie das AWS -Code-Beispiel-Repository einrichten und ausführen.

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;
    }
}

• API-Details finden Sie in den folgenden Themen der AWS SDK for Java 2.x -API-Referenz.

  • DeleteAlarms

  • DeleteAnomalyDetector

  • DeleteDashboards

  • DescribeAlarmHistory

  • DescribeAlarms

  • DescribeAlarmsForMetric

  • DescribeAnomalyDetectors

  • GetMetricData

  • GetMetricStatistics

  • GetMetricWidgetImage

  • ListMetrics

  • PutAnomalyDetector

  • PutDashboard

  • PutMetricAlarm

  • PutMetricData