AWS 文檔 AWS SDK示例 GitHub 回購中有更多SDK示例。
本文為英文版的機器翻譯版本,如內容有任何歧義或不一致之處,概以英文版為準。
使用的程式碼範 CloudWatch 例 AWS SDKs
下列程式碼範例說明如何 CloudWatch 搭配 AWS 軟體開發套件使用 Amazon (SDK)。
Actions 是大型程式的程式碼摘錄,必須在內容中執行。雖然動作會告訴您如何呼叫個別服務函數,但您可以在其相關情境和跨服務範例中查看內容中的動作。
Scenarios (案例) 是向您展示如何呼叫相同服務中的多個函數來完成特定任務的程式碼範例。
Cross-service examples (跨服務範例) 是跨多個 AWS 服務執行的應用程式範例。
開始使用
下列程式碼範例會示範如何開始使用 CloudWatch。
- .NET
-
- AWS SDK for .NET
-
using Amazon.CloudWatch;
using Amazon.CloudWatch.Model;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
namespace CloudWatchActions;
public static class HelloCloudWatch
{
static async Task Main(string[] args)
{
// Use the AWS .NET Core Setup package to set up dependency injection for the Amazon CloudWatch service.
// Use your AWS profile name, or leave it blank to use the default profile.
using var host = Host.CreateDefaultBuilder(args)
.ConfigureServices((_, services) =>
services.AddAWSService<IAmazonCloudWatch>()
).Build();
// Now the client is available for injection.
var cloudWatchClient = host.Services.GetRequiredService<IAmazonCloudWatch>();
// You can use await and any of the async methods to get a response.
var metricNamespace = "AWS/Billing";
var response = await cloudWatchClient.ListMetricsAsync(new ListMetricsRequest
{
Namespace = metricNamespace
});
Console.WriteLine($"Hello Amazon CloudWatch! Following are some metrics available in the {metricNamespace} namespace:");
Console.WriteLine();
foreach (var metric in response.Metrics.Take(5))
{
Console.WriteLine($"\tMetric: {metric.MetricName}");
Console.WriteLine($"\tNamespace: {metric.Namespace}");
Console.WriteLine($"\tDimensions: {string.Join(", ", metric.Dimensions.Select(m => $"{m.Name}:{m.Value}"))}");
Console.WriteLine();
}
}
}
- Java
-
- SDK對於爪哇 2.x
-
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);
}
}
}
- Kotlin
-
- SDK對於科特林
-
/**
Before running this Kotlin code example, set up your development environment,
including your credentials.
For more information, see the following documentation topic:
https://docs.aws.amazon.com/sdk-for-kotlin/latest/developer-guide/setup.html
*/
suspend fun main(args: Array<String>) {
val usage = """
Usage:
<namespace>
Where:
namespace - The namespace to filter against (for example, AWS/EC2).
"""
if (args.size != 1) {
println(usage)
exitProcess(0)
}
val namespace = args[0]
listAllMets(namespace)
}
suspend fun listAllMets(namespaceVal: String?) {
val request =
ListMetricsRequest {
namespace = namespaceVal
}
CloudWatchClient { region = "us-east-1" }.use { cwClient ->
cwClient
.listMetricsPaginated(request)
.transform { it.metrics?.forEach { obj -> emit(obj) } }
.collect { obj ->
println("Name is ${obj.metricName}")
println("Namespace is ${obj.namespace}")
}
}
}