如何通过电子邮件发送Cloudwatch日志详细信息?

http://docs.aws.amazon.com/awscloudtrail/latest/userguide/use-cloudformation-template-to-create-cloudwatch-alarms.html

AWS::Logs::MetricFilter 应将值传递给 AWS::CloudWatch::Alarm 然后发送信息。我已经查看了这两个项目的文档 MetricFilter 和 Alarm Dimension 更接近我想要的,但还无法从日志中读取信息。

我本以为这是一个常见的用例,并且会有文档。我是不是错过了一些显而易见的东西?这里有人解决了这个问题吗?

AWS::日志::MetricFilter 块:

"AuthorizationFailuresMetricFilter": {
    "Type": "AWS::Logs::MetricFilter",
    "Properties": {
        "LogGroupName": { "Ref" : "LogGroupName" },
        "FilterPattern": "{ ($.errorCode = \"*UnauthorizedOperation\") || ($.errorCode = \"AccessDenied*\") }",
        "MetricTransformations": [
            {
                "MetricNamespace": "CloudTrailMetrics",
                "MetricName": "AuthorizationFailureCount",
                "MetricValue": "1"
            }
        ]
    }
},

块

  "AuthorizationFailuresAlarm": {
      "Type": "AWS::CloudWatch::Alarm",
      "Properties": {
          "AlarmName" : "CloudTrailAuthorizationFailures",
          "AlarmDescription" : "Alarms when an unauthorized API call is made.",
          "AlarmActions" : [{ "Ref" : "AlarmNotificationTopic" }],
          "Dimensions": [
             {
                "Name": "errorCode",
                "Value": ""
             },
             {
                "Name": "userIdentity",
                "Value": ""
             }
          ],
          "MetricName" : "AuthorizationFailureCount",
          "Namespace" : "CloudTrailMetrics",
          "ComparisonOperator" : "GreaterThanOrEqualToThreshold",
          "EvaluationPeriods" : "1",
          "Period" : "300",
          "Statistic" : "Sum",
          "Threshold" : "1"

      }
  },