# 将 `GetMetricStatistics` 与 AWS SDK 或 CLI 配合使用 以下代码示例演示如何使用 `GetMetricStatistics`。 操作示例是大型程序的代码摘录，必须在上下文中运行。您可以在以下代码示例中查看此操作的上下文： + [了解基本功能](example_cloudwatch_GetStartedMetricsDashboardsAlarms_section.md) + [管理指标和告警](example_cloudwatch_Usage_MetricsAlarms_section.md) ------ #### [ .NET ] **适用于 .NET 的 SDK (v4)** 查看 GitHub，了解更多信息。在 [AWS 代码示例存储库](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/dotnetv4/CloudWatch#code-examples)中查找完整示例，了解如何进行设置和运行。 ``` /// /// Get billing statistics using a call to a wrapper class. /// /// A collection of billing statistics. private static async Task> SetupBillingStatistics() { // Make a request for EstimatedCharges with a period of one day for the past seven days. var billingStatistics = await _cloudWatchWrapper.GetMetricStatistics( "AWS/Billing", "EstimatedCharges", new List() { "Maximum" }, new List() { new Dimension { Name = "Currency", Value = "USD" } }, 7, 86400); billingStatistics = billingStatistics.OrderBy(n => n.Timestamp).ToList(); return billingStatistics; } /// /// Wrapper to get statistics for a specific CloudWatch metric. /// /// The namespace of the metric. /// The name of the metric. /// The list of statistics to include. /// The list of dimensions to include. /// The number of days in the past to include. /// The period for the data. /// A list of DataPoint objects for the statistics. public async Task> GetMetricStatistics(string metricNamespace, string metricName, List statistics, List dimensions, int days, int period) { var metricStatistics = await _amazonCloudWatch.GetMetricStatisticsAsync( new GetMetricStatisticsRequest() { Namespace = metricNamespace, MetricName = metricName, Dimensions = dimensions, Statistics = statistics, StartTimeUtc = DateTime.UtcNow.AddDays(-days), EndTimeUtc = DateTime.UtcNow, Period = period }); return metricStatistics.Datapoints ?? new List(); } ``` + 有关 API 详细信息，请参阅《适用于 .NET 的 AWS SDK API Reference》**中的 [GetMetricStatistics](https://docs.aws.amazon.com/goto/DotNetSDKV4/monitoring-2010-08-01/GetMetricStatistics)。 ------ #### [ CLI ] **AWS CLI** **获取每个 EC2 实例的 CPU 利用率** 以下示例使用 `get-metric-statistics` 命令获取 ID 为 i-abcdef 的 EC2 实例的 CPU 利用率。 ``` aws cloudwatch get-metric-statistics --metric-name {{CPUUtilization}} --start-time {{2014-04-08T23:18:00Z}} --end-time {{2014-04-09T23:18:00Z}} --period {{3600}} --namespace {{AWS/EC2}} --statistics {{Maximum}} --dimensions {{Name=InstanceId,Value=i-abcdef}} ``` 输出： ``` { "Datapoints": [ { "Timestamp": "2014-04-09T11:18:00Z", "Maximum": 44.79, "Unit": "Percent" }, { "Timestamp": "2014-04-09T20:18:00Z", "Maximum": 47.92, "Unit": "Percent" }, { "Timestamp": "2014-04-09T19:18:00Z", "Maximum": 50.85, "Unit": "Percent" }, { "Timestamp": "2014-04-09T09:18:00Z", "Maximum": 47.92, "Unit": "Percent" }, { "Timestamp": "2014-04-09T03:18:00Z", "Maximum": 76.84, "Unit": "Percent" }, { "Timestamp": "2014-04-09T21:18:00Z", "Maximum": 48.96, "Unit": "Percent" }, { "Timestamp": "2014-04-09T14:18:00Z", "Maximum": 47.92, "Unit": "Percent" }, { "Timestamp": "2014-04-09T08:18:00Z", "Maximum": 47.92, "Unit": "Percent" }, { "Timestamp": "2014-04-09T16:18:00Z", "Maximum": 45.55, "Unit": "Percent" }, { "Timestamp": "2014-04-09T06:18:00Z", "Maximum": 47.92, "Unit": "Percent" }, { "Timestamp": "2014-04-09T13:18:00Z", "Maximum": 45.08, "Unit": "Percent" }, { "Timestamp": "2014-04-09T05:18:00Z", "Maximum": 47.92, "Unit": "Percent" }, { "Timestamp": "2014-04-09T18:18:00Z", "Maximum": 46.88, "Unit": "Percent" }, { "Timestamp": "2014-04-09T17:18:00Z", "Maximum": 52.08, "Unit": "Percent" }, { "Timestamp": "2014-04-09T07:18:00Z", "Maximum": 47.92, "Unit": "Percent" }, { "Timestamp": "2014-04-09T02:18:00Z", "Maximum": 51.23, "Unit": "Percent" }, { "Timestamp": "2014-04-09T12:18:00Z", "Maximum": 47.67, "Unit": "Percent" }, { "Timestamp": "2014-04-08T23:18:00Z", "Maximum": 46.88, "Unit": "Percent" }, { "Timestamp": "2014-04-09T10:18:00Z", "Maximum": 51.91, "Unit": "Percent" }, { "Timestamp": "2014-04-09T04:18:00Z", "Maximum": 47.13, "Unit": "Percent" }, { "Timestamp": "2014-04-09T15:18:00Z", "Maximum": 48.96, "Unit": "Percent" }, { "Timestamp": "2014-04-09T00:18:00Z", "Maximum": 48.16, "Unit": "Percent" }, { "Timestamp": "2014-04-09T01:18:00Z", "Maximum": 49.18, "Unit": "Percent" } ], "Label": "CPUUtilization" } ``` **指定多个维度** 以下示例说明如何指定多个维度。每个维度都指定为一个“名称/值”对，名称和值之间用逗号隔开。多个维度之间用空格隔开。如果单个指标包含多个维度，则必须为每个已定义的维度指定一个值。 有关使用 `get-metric-statistics` 命令的更多示例，请参阅《Amazon CloudWatch 开发人员指南》**中的“获取指标的统计数据”。 ``` aws cloudwatch get-metric-statistics --metric-name {{Buffers}} --namespace {{MyNameSpace}} --dimensions {{Name=InstanceID,Value=i-abcdef}} {{Name=InstanceType,Value=m1.small}} --start-time {{2016-10-15T04:00:00Z}} --end-time {{2016-10-19T07:00:00Z}} --statistics {{Average}} --period {{60}} ``` + 有关 API 详细信息，请参阅《AWS CLI Command Reference》**中的 [GetMetricStatistics](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/cloudwatch/get-metric-statistics.html)。 ------ #### [ Java ] **适用于 Java 的 SDK 2.x** 查看 GitHub，了解更多信息。在 [AWS 代码示例存储库](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/cloudwatch#code-examples)中查找完整示例，了解如何进行设置和运行。 ``` /** * Retrieves and displays metric statistics for the specified parameters. * * @param nameSpace the namespace for the metric * @param metVal the name of the metric * @param metricOption the statistic to retrieve for the metric (e.g., "Maximum", "Average") * @param date the date for which to retrieve the metric statistics, in the format "yyyy-MM-dd'T'HH:mm:ss'Z'" * @param myDimension the dimension(s) to filter the metric statistics by * @return a {@link CompletableFuture} that completes when the metric statistics have been retrieved and displayed */ public CompletableFuture getAndDisplayMetricStatisticsAsync(String nameSpace, String metVal, String metricOption, String date, Dimension myDimension) { Instant start = Instant.parse(date); Instant endDate = Instant.now(); // Building the request for metric statistics. GetMetricStatisticsRequest statisticsRequest = GetMetricStatisticsRequest.builder() .endTime(endDate) .startTime(start) .dimensions(myDimension) .metricName(metVal) .namespace(nameSpace) .period(86400) // 1 day period .statistics(Statistic.fromValue(metricOption)) .build(); return getAsyncClient().getMetricStatistics(statisticsRequest) .whenComplete((response, exception) -> { if (response != null) { List data = response.datapoints(); if (!data.isEmpty()) { for (Datapoint datapoint : data) { logger.info("Timestamp: {} Maximum value: {}", datapoint.timestamp(), datapoint.maximum()); } } else { logger.info("The returned data list is empty"); } } else { logger.info("Failed to get metric statistics: {} ", exception.getMessage()); } }) .exceptionally(exception -> { throw new RuntimeException("Error while getting metric statistics: " + exception.getMessage(), exception); }); } ``` + 有关 API 详细信息，请参阅《AWS SDK for Java 2.x API Reference》**中的 [GetMetricStatistics](https://docs.aws.amazon.com/goto/SdkForJavaV2/monitoring-2010-08-01/GetMetricStatistics)。 ------ #### [ Kotlin ] **适用于 Kotlin 的 SDK** 查看 GitHub，了解更多信息。在 [AWS 代码示例存储库](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/cloudwatch#code-examples)中查找完整示例，了解如何进行设置和运行。 ``` suspend fun getAndDisplayMetricStatistics( nameSpaceVal: String, metVal: String, metricOption: String, date: String, myDimension: Dimension, ) { val start = Instant.parse(date) val endDate = Instant.now() val statisticsRequest = GetMetricStatisticsRequest { endTime = aws.smithy.kotlin.runtime.time .Instant(endDate) startTime = aws.smithy.kotlin.runtime.time .Instant(start) dimensions = listOf(myDimension) metricName = metVal namespace = nameSpaceVal period = 86400 statistics = listOf(Statistic.fromValue(metricOption)) } CloudWatchClient { region = "us-east-1" }.use { cwClient -> val response = cwClient.getMetricStatistics(statisticsRequest) val data = response.datapoints if (data != null) { if (data.isNotEmpty()) { for (datapoint in data) { println("Timestamp: ${datapoint.timestamp} Maximum value: ${datapoint.maximum}") } } else { println("The returned data list is empty") } } } } ``` + 有关 API 详细信息，请参阅《AWS SDK for Kotlin API Reference》**中的 [GetMetricStatistics](https://sdk.amazonaws.com/kotlin/api/latest/index.html)。 ------ #### [ Python ] **适用于 Python 的 SDK（Boto3）** 查看 GitHub，了解更多信息。在 [AWS 代码示例存储库](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/python/example_code/cloudwatch#code-examples) 中查找完整示例，了解如何进行设置和运行。 ``` class CloudWatchWrapper: """Encapsulates Amazon CloudWatch functions.""" def __init__(self, cloudwatch_resource): """ :param cloudwatch_resource: A Boto3 CloudWatch resource. """ self.cloudwatch_resource = cloudwatch_resource def get_metric_statistics(self, namespace, name, start, end, period, stat_types): """ Gets statistics for a metric within a specified time span. Metrics are grouped into the specified period. :param namespace: The namespace of the metric. :param name: The name of the metric. :param start: The UTC start time of the time span to retrieve. :param end: The UTC end time of the time span to retrieve. :param period: The period, in seconds, in which to group metrics. The period must match the granularity of the metric, which depends on the metric's age. For example, metrics that are older than three hours have a one-minute granularity, so the period must be at least 60 and must be a multiple of 60. :param stat_types: The type of statistics to retrieve, such as average value or maximum value. :return: The retrieved statistics for the metric. """ try: metric = self.cloudwatch_resource.Metric(namespace, name) stats = metric.get_statistics( StartTime=start, EndTime=end, Period=period, Statistics=stat_types ) logger.info( "Got %s statistics for %s.", len(stats["Datapoints"]), stats["Label"] ) except ClientError: logger.exception("Couldn't get statistics for %s.%s.", namespace, name) raise else: return stats ``` + 有关 API 详细信息，请参阅《AWS SDK for Python (Boto3) API Reference》**中的 [GetMetricStatistics](https://docs.aws.amazon.com/goto/boto3/monitoring-2010-08-01/GetMetricStatistics)。 ------ #### [ SAP ABAP ] **适用于 SAP ABAP 的 SDK** 查看 GitHub，了解更多信息。在 [AWS 代码示例存储库](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/sap-abap/services/cwt#code-examples)中查找完整示例，了解如何进行设置和运行。 ``` TRY. oo_result = lo_cwt->getmetricstatistics( " oo_result is returned for testing purposes. " iv_namespace = iv_namespace iv_metricname = iv_metric_name iv_starttime = iv_start_time iv_endtime = iv_end_time iv_period = iv_period it_statistics = it_statistics ). MESSAGE 'Metric statistics retrieved.' TYPE 'I'. CATCH /aws1/cx_cwtinvparamvalueex. MESSAGE 'The specified argument was not valid.' TYPE 'E'. ENDTRY. ``` + 有关 API 详细信息，请参阅《AWS SDK for SAP ABAP API Reference》**中的 [GetMetricStatistics](https://docs.aws.amazon.com/sdk-for-sap-abap/v1/api/latest/index.html)。 ------ 有关 AWS SDK 开发人员指南和代码示例的完整列表，请参阅 [将 CloudWatch 与 AWS SDK 结合使用](sdk-general-information-section.md)。本主题还包括有关入门的信息以及有关先前的 SDK 版本的详细信息。