如何遍历 Kusto 中的数组？

Question

我需要在 Azure 资源图资源管理器 ( https://preview.portal.azure.com/ ) 中遍历托管数据磁盘。我的查询在下面，但它返回 JSON 数组，我需要提取磁盘名称和正在使用的存储帐户类型（示例 JSON 返回如下）。所以我想在屏幕上看到按机器名称、磁盘名称和存储帐户类型分组。我当前的查询在下面，但显然由于 JSON 的返回它不起作用

where type =~ 'Microsoft.Compute/virtualmachines' |
extend disks = properties.storageProfile.dataDisks |
project name, disks

相同的 JSON 输出

[
    {
        "name": "COMP02_DDisk1",
        "createOption": "Attach",
        "diskSizeGB": 400,
        "managedDisk": {
            "id": "/subscriptions/5f5c5be9-77d4db790171/resourceGroups/BRAZILSOUTHDB/providers/Microsoft.Compute/disks/COMP02_DDisk1",
            "storageAccountType": "Premium_LRS"
        },
        "caching": "None",
        "toBeDetached": false,
        "lun": 0,
        "writeAcceleratorEnabled": false
    },
    {
        "name": "COMP02_DDisk2",
        "createOption": "Attach",
        "diskSizeGB": 400,
        "managedDisk": {
            "id": "/subscriptions/5f5c5be9-77d4db790171/resourceGroups/BRAZILSOUTHDB/providers/Microsoft.Compute/disks/COMP02_DDisk2",
            "storageAccountType": "Premium_LRS"
        },
        "caching": "None",
        "toBeDetached": false,
        "lun": 1,
        "writeAcceleratorEnabled": false
    }
]

Answer 1

在这种情况下，使用mv-expand扩展数组然后为每条记录应用动态属性访问器通常很有帮助。

https://docs.microsoft.com/en-us/azure/kusto/query/mvexpandoperator

例子：

print d = dynamic([
    {
        "name": "COMP02_DDisk1",
        "createOption": "Attach",
        "diskSizeGB": 400,
        "managedDisk": {
            "id": "/subscriptions/5f5c5be9-77d4db790171/resourceGroups/BRAZILSOUTHDB/providers/Microsoft.Compute/disks/COMP02_DDisk1",
            "storageAccountType": "Premium_LRS"
        },
        "caching": "None",
        "toBeDetached": false,
        "lun": 0,
        "writeAcceleratorEnabled": false
    },
    {
        "name": "COMP02_DDisk2",
        "createOption": "Attach",
        "diskSizeGB": 400,
        "managedDisk": {
            "id": "/subscriptions/5f5c5be9-77d4db790171/resourceGroups/BRAZILSOUTHDB/providers/Microsoft.Compute/disks/COMP02_DDisk2",
            "storageAccountType": "Premium_LRS"
        },
        "caching": "None",
        "toBeDetached": false,
        "lun": 1,
        "writeAcceleratorEnabled": false
    }
])
| mv-expand d
| project d.name, d.managedDisk.storageAccountType

这将输出：

| d_name        | d_managedDisk_storageAccountType |
|---------------|----------------------------------|
| COMP02_DDisk1 | Premium_LRS                      |
| COMP02_DDisk2 | Premium_LRS                      |