PutRule与 S Amazon DK 或命令行工具配合使用

创建规则，将对象添加到 Amazon Simple Storage Service 桶时触发。

    /// <summary>
    /// Create a new event rule that triggers when an Amazon S3 object is created in a bucket.
    /// </summary>
    /// <param name="roleArn">The ARN of the role.</param>
    /// <param name="ruleName">The name to give the rule.</param>
    /// <param name="bucketName">The name of the bucket to trigger the event.</param>
    /// <returns>The ARN of the new rule.</returns>
    public async Task<string> PutS3UploadRule(string roleArn, string ruleName, string bucketName)
    {
        string eventPattern = "{" +
                                "\"source\": [\"aws.s3\"]," +
                                    "\"detail-type\": [\"Object Created\"]," +
                                    "\"detail\": {" +
                                        "\"bucket\": {" +
                                            "\"name\": [\"" + bucketName + "\"]" +
                                        "}" +
                                    "}" +
                              "}";

        var response = await _amazonEventBridge.PutRuleAsync(
            new PutRuleRequest()
            {
                Name = ruleName,
                Description = "Example S3 upload rule for EventBridge",
                RoleArn = roleArn,
                EventPattern = eventPattern
            });

        return response.RuleArn;
    }

创建使用自定义模式的规则。

    /// <summary>
    /// Update a rule to use a custom defined event pattern.
    /// </summary>
    /// <param name="ruleName">The name of the rule to update.</param>
    /// <returns>The ARN of the updated rule.</returns>
    public async Task<string> UpdateCustomEventPattern(string ruleName)
    {
        string customEventsPattern = "{" +
                                     "\"source\": [\"ExampleSource\"]," +
                                     "\"detail-type\": [\"ExampleType\"]" +
                                     "}";

        var response = await _amazonEventBridge.PutRuleAsync(
            new PutRuleRequest()
            {
                Name = ruleName,
                Description = "Custom test rule",
                EventPattern = customEventsPattern
            });

        return response.RuleArn;
    }

包含所需的文件。

#include <aws/core/Aws.h>
#include <aws/events/EventBridgeClient.h>
#include <aws/events/model/PutRuleRequest.h>
#include <aws/events/model/PutRuleResult.h>
#include <aws/core/utils/Outcome.h>
#include <iostream>

创建 规则。

        Aws::CloudWatchEvents::EventBridgeClient cwe;
        Aws::CloudWatchEvents::Model::PutRuleRequest request;
        request.SetName(rule_name);
        request.SetRoleArn(role_arn);
        request.SetScheduleExpression("rate(5 minutes)");
        request.SetState(Aws::CloudWatchEvents::Model::RuleState::ENABLED);

        auto outcome = cwe.PutRule(request);
        if (!outcome.IsSuccess())
        {
            std::cout << "Failed to create CloudWatch events rule " <<
                rule_name << ": " << outcome.GetError().GetMessage() <<
                std::endl;
        }
        else
        {
            std::cout << "Successfully created CloudWatch events rule " <<
                rule_name << " with resulting Arn " <<
                outcome.GetResult().GetRuleArn() << std::endl;
        }

创建 CloudWatch 活动规则

该示例创建一条可在协调世界时每天上午 9:00 触发的规则。如果您使用 put-targets 将 Lambda 函数添加为该规则的目标，则可以在每天的指定时间运行该 Lambda 函数：

aws events put-rule --name "DailyLambdaFunction" --schedule-expression "cron(0 9 * * ? *)"

以下示例创建一条规则，将在区域中的任何 EC2 实例更改状态时触发该规则：

aws events put-rule --name "EC2InstanceStateChanges" --event-pattern "{\"source\":[\"aws.ec2\"],\"detail-type\":[\"EC2 Instance State-change Notification\"]}"  --role-arn "arn:aws:iam::123456789012:role/MyRoleForThisRule"

以下示例创建一条规则，将在区域中的任何 EC2 实例停止或终止时触发该规则：

aws events put-rule --name "EC2InstanceStateChangeStopOrTerminate" --event-pattern "{\"source\":[\"aws.ec2\"],\"detail-type\":[\"EC2 Instance State-change Notification\"],\"detail\":{\"state\":[\"stopped\",\"terminated\"]}}" --role-arn "arn:aws:iam::123456789012:role/MyRoleForThisRule"

创建计划规则。

    public static void createEBRule(EventBridgeClient eventBrClient, String ruleName, String cronExpression) {
        try {
            PutRuleRequest ruleRequest = PutRuleRequest.builder()
                    .name(ruleName)
                    .eventBusName("default")
                    .scheduleExpression(cronExpression)
                    .state("ENABLED")
                    .description("A test rule that runs on a schedule created by the Java API")
                    .build();

            PutRuleResponse ruleResponse = eventBrClient.putRule(ruleRequest);
            System.out.println("The ARN of the new rule is " + ruleResponse.ruleArn());

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

创建规则，将对象添加到 Amazon Simple Storage Service 桶时触发。

    // Create a new event rule that triggers when an Amazon S3 object is created in
    // a bucket.
    public static void addEventRule(EventBridgeClient eventBrClient, String roleArn, String bucketName,
            String eventRuleName) {
        String pattern = "{\n" +
                "  \"source\": [\"aws.s3\"],\n" +
                "  \"detail-type\": [\"Object Created\"],\n" +
                "  \"detail\": {\n" +
                "    \"bucket\": {\n" +
                "      \"name\": [\"" + bucketName + "\"]\n" +
                "    }\n" +
                "  }\n" +
                "}";

        try {
            PutRuleRequest ruleRequest = PutRuleRequest.builder()
                    .description("Created by using the AWS SDK for Java v2")
                    .name(eventRuleName)
                    .eventPattern(pattern)
                    .roleArn(roleArn)
                    .build();

            PutRuleResponse ruleResponse = eventBrClient.putRule(ruleRequest);
            System.out.println("The ARN of the new rule is " + ruleResponse.ruleArn());

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

导入 SDK 和客户端模块，然后调用 API。

import { EventBridgeClient, PutRuleCommand } from "@aws-sdk/client-eventbridge";

export const putRule = async (
  ruleName = "some-rule",
  source = "some-source",
) => {
  const client = new EventBridgeClient({});

  const response = await client.send(
    new PutRuleCommand({
      Name: ruleName,
      EventPattern: JSON.stringify({ source: [source] }),
      State: "ENABLED",
      EventBusName: "default",
    }),
  );

  console.log("PutRule response:");
  console.log(response);
  // PutRule response:
  // {
  //   '$metadata': {
  //     httpStatusCode: 200,
  //     requestId: 'd7292ced-1544-421b-842f-596326bc7072',
  //     extendedRequestId: undefined,
  //     cfId: undefined,
  //     attempts: 1,
  //     totalRetryDelay: 0
  //   },
  //   RuleArn: 'arn:aws:events:us-east-1:xxxxxxxxxxxx:rule/EventBridgeTestRule-1696280037720'
  // }
  return response;
};

// Load the AWS SDK for Node.js
var AWS = require("aws-sdk");
// Set the region
AWS.config.update({ region: "REGION" });

// Create CloudWatchEvents service object
var ebevents = new AWS.EventBridge({ apiVersion: "2015-10-07" });

var params = {
  Name: "DEMO_EVENT",
  RoleArn: "IAM_ROLE_ARN",
  ScheduleExpression: "rate(5 minutes)",
  State: "ENABLED",
};

ebevents.putRule(params, function (err, data) {
  if (err) {
    console.log("Error", err);
  } else {
    console.log("Success", data.RuleArn);
  }
});

创建计划规则。

suspend fun createScRule(ruleName: String?, cronExpression: String?) {
    val ruleRequest = PutRuleRequest {
        name = ruleName
        eventBusName = "default"
        scheduleExpression = cronExpression
        state = RuleState.Enabled
        description = "A test rule that runs on a schedule created by the Kotlin API"
    }

    EventBridgeClient { region = "us-west-2" }.use { eventBrClient ->
        val ruleResponse = eventBrClient.putRule(ruleRequest)
        println("The ARN of the new rule is ${ruleResponse.ruleArn}")
    }
}

创建规则，将对象添加到 Amazon Simple Storage Service 桶时触发。

// Create a new event rule that triggers when an Amazon S3 object is created in a bucket.
suspend fun addEventRule(roleArnVal: String?, bucketName: String, eventRuleName: String?) {
    val pattern = """{
        "source": ["aws.s3"],
        "detail-type": ["Object Created"],
        "detail": {
        "bucket": {
            "name": ["$bucketName"]
            }
        }
    }"""

    val ruleRequest = PutRuleRequest {
        description = "Created by using the AWS SDK for Kotlin"
        name = eventRuleName
        eventPattern = pattern
        roleArn = roleArnVal
    }

    EventBridgeClient { region = "us-east-1" }.use { eventBrClient ->
        val ruleResponse = eventBrClient.putRule(ruleRequest)
        println("The ARN of the new rule is ${ruleResponse.ruleArn}")
    }
}