将csv中的多行分组为一行并存储到变量

Question

很可能非常简单，但我是新手，不太确定如何搜索我想要做的事情。到目前为止，我已经导入并排序了文件，但我不确定如何为客户组合多个故障并存储它们。我只是让他们写信给主机，以确保我捕捉到了失败。

CSV 示例

结果、系统ID、客户
成功,123,客户A
失败,456,客户B
失败,456,客户B
失败,789,客户B
成功,111,客户C
失败，321，客户 D

我需要为每个客户分别存储要通过电子邮件发送的故障。
向客户 B 发送电子邮件
System/s (456) & (789) 失败
电子邮件客户 D
System/s (321) 失败

Write-Host "CSVs: $CSVs"
foreach ($CSV in $CSVs) {
    $data = Import-Csv $CSV | Sort-Object Customer
    foreach ($line in $data) {
        if ($line.Result -eq "fail") {
            Write-Host  " Action should be taken for $($line.customer)" -ForegroundColor Green -BackgroundColor Black
            Write-Host "$($line.Result) on SystemID's $($line.SystemID)"
        }     
    }
}

Answer 1

您可以使用Group-Object 和Where-Object 根据客户失败对数据进行分组。

foreach ($CSV in $CSVs) {
    $data = Import-Csv $CSV | Sort-Object Customer
    $FailGroups = $data | Where Result -eq 'FAIL' | Group-Object Customer
    foreach ($FailGroup in $FailGroups) {
        $FailedCustomer = $FailGroup.Name
        $FailedSystems = ($FailGroup.Group.SystemID | Foreach-Object { "($_)" }) -join ' & '
        $MailMessage = "Systems/s {0} have failed" -f $FailedSystems
        $FailedCustomer # Outputting customers with failures
        $MailMessage # Outputting failed systems in formatted message
        # Below is a Custom Object that can be exported to CSV or retrieved later
        # [pscustomobject]@{'Customer' = $FailedCustomer; 'Message' = $MailMessage}
    }
}

您现在可以使用 $FailedCustomer 和 $MailMessage 在内部 foreach 迭代结束时制作您的电子邮件。

由于Group-Object 返回GroupInfo 对象，您需要访问其Name 属性以获取用于确定分组的属性值。 Group 属性包含分组中包含的 CSV 行（对象）。

---

如果您使用自定义对象路径，您可以将所有输出作为数组存储到单个变量中。然后，您可以将数组导出到 CSV 文件或遍历数组以完成电子邮件任务。

$output = foreach ($CSV in $CSVs) {
    $data = Import-Csv $CSV | Sort-Object Customer
    $FailGroups = $data | Where Result -eq 'FAIL' | Group-Object Customer
    foreach ($FailGroup in $FailGroups) {
        $FailedCustomer = $FailGroup.Name
        $FailedSystems = ($FailGroup.Group.SystemID | Foreach-Object { "($_)" }) -join ' & '
        $MailMessage = "Systems/s {0} have failed" -f $FailedSystems
        [pscustomobject]@{'Customer' = $FailedCustomer; 'Message' = $MailMessage}
    }
}
# Export to CSV
$output | Export-Csv -Path C:\Path\FailedCustomers.csv -NoType
# Email customers example
foreach ($customer in $output) {
    $MailParams = @{
        'SmtpServer' = 'smtp.domain.com'
        'Subject' = 'Failures'
        'To' = $customer.Customer
        'From' = you@domain.com
        'Body' = $customer.Message
    }
    Send-MailMessage @MailParams
}