CloudWatch Contoh acara menggunakan SDK untuk Java 2.x

Contoh kode berikut menunjukkan cara melakukan tindakan dan mengimplementasikan skenario umum dengan menggunakan AWS SDK for Java 2.x With CloudWatch Events.

Tindakan adalah kutipan kode dari program yang lebih besar dan harus dijalankan dalam konteks. Meskipun tindakan menunjukkan cara memanggil fungsi layanan individual, Anda dapat melihat tindakan dalam konteks pada skenario terkait dan contoh lintas layanan.

Skenario adalah contoh kode yang menunjukkan cara menyelesaikan tugas tertentu dengan memanggil beberapa fungsi dalam layanan yang sama.

Setiap contoh menyertakan tautan ke GitHub, di mana Anda dapat menemukan petunjuk tentang cara mengatur dan menjalankan kode dalam konteks.

Tindakan

PutEvents

Contoh kode berikut menunjukkan cara menggunakanPutEvents.

SDKuntuk Java 2.x

catatan

Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di AWS Repositori Contoh Kode.

import software.amazon.awssdk.services.cloudwatch.model.CloudWatchException;
import software.amazon.awssdk.services.cloudwatchevents.CloudWatchEventsClient;
import software.amazon.awssdk.services.cloudwatchevents.model.PutEventsRequest;
import software.amazon.awssdk.services.cloudwatchevents.model.PutEventsRequestEntry;

/**
 * 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 PutEvents {
    public static void main(String[] args) {
        final String usage = """

                Usage:
                   <resourceArn>

                Where:
                   resourceArn - An Amazon Resource Name (ARN) related to the events.
                """;

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

        String resourceArn = args[0];
        CloudWatchEventsClient cwe = CloudWatchEventsClient.builder()
                .build();

        putCWEvents(cwe, resourceArn);
        cwe.close();
    }

    public static void putCWEvents(CloudWatchEventsClient cwe, String resourceArn) {
        try {
            final String EVENT_DETAILS = "{ \"key1\": \"value1\", \"key2\": \"value2\" }";

            PutEventsRequestEntry requestEntry = PutEventsRequestEntry.builder()
                    .detail(EVENT_DETAILS)
                    .detailType("sampleSubmitted")
                    .resources(resourceArn)
                    .source("aws-sdk-java-cloudwatch-example")
                    .build();

            PutEventsRequest request = PutEventsRequest.builder()
                    .entries(requestEntry)
                    .build();

            cwe.putEvents(request);
            System.out.println("Successfully put CloudWatch event");

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

• Untuk API detailnya, lihat PutEventsdi AWS SDK for Java 2.x APIReferensi.

PutRule

Contoh kode berikut menunjukkan cara menggunakanPutRule.

SDKuntuk Java 2.x

catatan

Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di AWS Repositori Contoh Kode.

import software.amazon.awssdk.services.cloudwatch.model.CloudWatchException;
import software.amazon.awssdk.services.cloudwatchevents.CloudWatchEventsClient;
import software.amazon.awssdk.services.cloudwatchevents.model.PutRuleRequest;
import software.amazon.awssdk.services.cloudwatchevents.model.PutRuleResponse;
import software.amazon.awssdk.services.cloudwatchevents.model.RuleState;

/**
 * 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 PutRule {
    public static void main(String[] args) {
        final String usage = """

                Usage:
                  <ruleName> roleArn>\s

                Where:
                  ruleName - A rule name (for example, myrule).
                  roleArn - A role ARN value (for example, arn:aws:iam::xxxxxx047983:user/MyUser).
                """;

        if (args.length != 2) {
            System.out.println(usage);
            System.exit(1);
        }

        String ruleName = args[0];
        String roleArn = args[1];
        CloudWatchEventsClient cwe = CloudWatchEventsClient.builder()
                .build();

        putCWRule(cwe, ruleName, roleArn);
        cwe.close();
    }

    public static void putCWRule(CloudWatchEventsClient cwe, String ruleName, String roleArn) {
        try {
            PutRuleRequest request = PutRuleRequest.builder()
                    .name(ruleName)
                    .roleArn(roleArn)
                    .scheduleExpression("rate(5 minutes)")
                    .state(RuleState.ENABLED)
                    .build();

            PutRuleResponse response = cwe.putRule(request);
            System.out.printf(
                    "Successfully created CloudWatch events rule %s with arn %s",
                    roleArn, response.ruleArn());

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

• Untuk API detailnya, lihat PutRuledi AWS SDK for Java 2.x APIReferensi.

PutTargets

Contoh kode berikut menunjukkan cara menggunakanPutTargets.

SDKuntuk Java 2.x

catatan

Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di AWS Repositori Contoh Kode.

import software.amazon.awssdk.services.cloudwatch.model.CloudWatchException;
import software.amazon.awssdk.services.cloudwatchevents.CloudWatchEventsClient;
import software.amazon.awssdk.services.cloudwatchevents.model.PutTargetsRequest;
import software.amazon.awssdk.services.cloudwatchevents.model.Target;

/**
 * To run this Java V2 code example, ensure that you have setup your development
 * environment, including your credentials.
 *
 * For information, see this documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class PutTargets {
    public static void main(String[] args) {
        final String usage = """

                Usage:
                  <ruleName> <functionArn> <targetId>\s

                Where:
                  ruleName - A rule name (for example, myrule).
                  functionArn - An AWS Lambda function ARN (for example, arn:aws:lambda:us-west-2:xxxxxx047983:function:lamda1).
                  targetId - A target id value.
                """;

        if (args.length != 3) {
            System.out.println(usage);
            System.exit(1);
        }

        String ruleName = args[0];
        String functionArn = args[1];
        String targetId = args[2];
        CloudWatchEventsClient cwe = CloudWatchEventsClient.builder()
                .build();

        putCWTargets(cwe, ruleName, functionArn, targetId);
        cwe.close();
    }

    public static void putCWTargets(CloudWatchEventsClient cwe, String ruleName, String functionArn, String targetId) {
        try {
            Target target = Target.builder()
                    .arn(functionArn)
                    .id(targetId)
                    .build();

            PutTargetsRequest request = PutTargetsRequest.builder()
                    .targets(target)
                    .rule(ruleName)
                    .build();

            cwe.putTargets(request);
            System.out.printf(
                    "Successfully created CloudWatch events target for rule %s",
                    ruleName);

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

• Untuk API detailnya, lihat PutTargetsdi AWS SDK for Java 2.x APIReferensi.