使用流分析作业查询从 EventHub 过滤 azure 事件

问题描述

因此，我想使用流分析作业捕获 Azure 发送到 EventHub 的管理事件，并仅将符合特定条件的事件转发到 Azure 函数。事件出现在这样的对象中（经过大量修剪以简化）：

{
  "records": [
    {
      "resourceId": "<resource_path>","operationName": "MICROSOFT.COmpuTE/VIRTUALMACHInes/WRITE",},{
      "time": "2021-03-19T19:19:56.0639872Z","category": "Administrative","resultType": "Accept","resultSignature": "Accepted.Created","properties": {
        "statusCode": "Created","serviceRequestId": "<trimmed>","eventCategory": "Administrative","message": "Microsoft.Compute/virtualMachines/write","hierarchy": "<trimmed>"
      },"tenantId": "<trimmed>"
    }
  ],"EventProcessedUtcTime": "2021-03-19T19:25:21.1471185Z","PartitionId": 1,"EventEnqueuedUtcTime": "2021-03-19T19:20:43.9080000Z"
}

我想根据以下条件过滤查询：records[0].operationName = 'MICROSOFT.COmpuTE/VIRTUALMACHInes/WRITE' AND records[1].properties.statusCode = 'Created'。为了实现这一点，我从以下查询开始，该查询返回此记录，但缺少我需要匹配的条件之一 (statusCode)

SELECT
    records
INTO
    [output]
FROM
    [input]
WHERE
    GetArrayElement(records,0).operationName = 'MICROSOFT.COmpuTE/VIRTUALMACHInes/WRITE'

尝试下面的查询不起作用（它返回 0 个匹配项）：

SELECT
    records
INTO
    [output]
FROM
    [input]
WHERE
    GetArrayElement(records,0).operationName = 'MICROSOFT.COmpuTE/VIRTUALMACHInes/WRITE'
    AND GetArrayElement(records,1).properties.statusCode = 'OK'

有人知道这个吗？

解决方法

找到解决方案！我需要使用 GetRecordPropertyValue，如下所示：

SELECT
    records
INTO
    [output]
FROM
    [input]
WHERE
    GetArrayElement(records,0).operationName = 'MICROSOFT.COMPUTE/VIRTUALMACHINES/WRITE'
    AND GetRecordPropertyValue(GetArrayElement(records,1).properties,'statusCode') = 'Created'

对我来说看起来有点笨拙，但它奏效了！