作为将本地数据仓库迁移到 Azure 的一部分，是否需要重新发布 powerBI 报告

如何解决作为将本地数据仓库迁移到 Azure 的一部分，是否需要重新发布 powerBI 报告

我的组织将从内部部署的 sql server 数据仓库迁移到 azure sql 数据库。

目前，我们使用网关来允许连接到本地数据仓库

作为迁移的一部分，azure 数据库将被重命名。

这是否意味着需要重新发布所有 PowerBI 报告并指向新的 azure DWH？

解决方法

如果数据库架构保持不变，那么您可以简单地使用 Power BI REST API 到 change the datasource 和 patch the credentials。例如，这可以通过使用 Power BI Management CmdLets 的 PowerShell 来完成。首先，以管理员身份启动 PowerShell 并通过执行以下脚本安装 CmdLets：

Install-Module MicrosoftPowerBIMgmt

如果您在计算机上没有管理员权限，或者由于某些其他原因不想为所有用户安装这些，您可以只为当前用户安装：

Install-Module MicrosoftPowerBIMgmt -Scope CurrentUser

更新前几行的值以指向 Azure SQL 数据库和发布的报告，然后执行脚本更改数据源：

# Fill these ###################################################
$workspaceName = "The name of the workspace where the report is published"
$datasetName = "The name of the report"
$sqlDatabaseServer = "servername.database.windows.net"
$sqlDatabaseName = "Database name"
$username = "[e-mail]"
$password = "the password of the power bi user" | ConvertTo-SecureString -asPlainText -Force
################################################################

Import-Module MicrosoftPowerBIMgmt

Clear-Host

$credential = New-Object System.Management.Automation.PSCredential($username,$password)

Connect-PowerBIServiceAccount -Credential $credential | Out-Null

$workspace = Get-PowerBIWorkspace -Name $workspaceName

$dataset = Get-PowerBIDataset -WorkspaceId $workspace.Id -Name $datasetName

$datasource = Get-PowerBIDatasource -WorkspaceId $workspace.Id -DatasetId $dataset.Id

# Construct url
$workspaceId = $workspace.Id
$datasetId = $dataset.Id
$datasourceUrl = "groups/$workspaceId/datasets/$datasetId/datasources"

# Call the REST API to get gateway Id,datasource Id and current connection details
$datasourcesResult = Invoke-PowerBIRestMethod -Method Get -Url $datasourceUrl | ConvertFrom-Json

# Parse the response
$datasource = $datasourcesResult.value[0]
$gatewayId = $datasource.gatewayId
$datasourceId = $datasource.datasourceId
$sqlDatabaseServerCurrent = $datasource.connectionDetails.server
$sqlDatabaseNameCurrent = $datasource.connectionDetails.database

# Construct url for update
$datasourePatchUrl = "groups/$workspaceId/datasets/$datasetId/Default.UpdateDatasources"

# create HTTP request body to update datasource connection details
$postBody = @{
  "updateDetails" = @(
   @{
    "connectionDetails" = @{
      "server" = "$sqlDatabaseServer"
      "database" = "$sqlDatabaseName"
    }
    "datasourceSelector" = @{
      "datasourceType" = "Sql"
      "connectionDetails" = @{
        "server" = "$sqlDatabaseServerCurrent"
        "database" = "$sqlDatabaseNameCurrent"
      }
      "gatewayId" = "$gatewayId"
      "datasourceId" = "$datasourceId"
    }
  })
}

$postBodyJson = ConvertTo-Json -InputObject $postBody -Depth 6 -Compress

# Execute POST operation to update datasource connection details
Invoke-PowerBIRestMethod -Method Post -Url $datasourePatchUrl -Body $postBodyJson

# NOTE: dataset credentials must be reset after updating connection details

现在更新以下脚本开头的值并执行它以修补生产数据库的凭据：

# Fill these ###################################################
$workspaceName = "The name of the workspace where the report is published"
$reportName = "The name of the report"
$sqlUserName = "user name"
$sqlUserPassword = "password"
$username = "[e-mail]"
$password = "the password of the power bi user" | ConvertTo-SecureString -asPlainText -Force
################################################################

Import-Module MicrosoftPowerBIMgmt

Clear-Host

$credential = New-Object System.Management.Automation.PSCredential($username,$password)

Connect-PowerBIServiceAccount -Credential $credential | Out-Null

$workspace = Get-PowerBIWorkspace -Name $workspaceName

$dataset = Get-PowerBIDataset -WorkspaceId $workspace.Id -Name $reportName

$workspaceId = $workspace.Id
$datasetId = $dataset.Id

$datasources = Get-PowerBIDatasource -WorkspaceId $workspaceId -DatasetId $datasetId

foreach($datasource in $datasources) {

  $gatewayId = $datasource.gatewayId
  $datasourceId = $datasource.datasourceId
  $datasourePatchUrl = "gateways/$gatewayId/datasources/$datasourceId"

  Write-Host "Patching credentials for $datasourceId"

  # HTTP request body to patch datasource credentials
  $userNameJson = "{""name"":""username"",""value"":""$sqlUserName""}"
  $passwordJson = "{""name"":""password"",""value"":""$sqlUserPassword""}"

  $patchBody = @{
    "credentialDetails" = @{
      "credentials" = "{""credentialData"":[ $userNameJson,$passwordJson ]}"
      "credentialType" = "Basic"
      "encryptedConnection" =  "NotEncrypted"
      "encryptionAlgorithm" = "None"
      "privacyLevel" = "Organizational"
    }
  }

  # Convert body contents to JSON
  $patchBodyJson = ConvertTo-Json -InputObject $patchBody -Depth 6 -Compress

  # Execute PATCH operation to set datasource credentials
  Invoke-PowerBIRestMethod -Method Patch -Url $datasourePatchUrl -Body $patchBodyJson
}

$datasetRefreshUrl = "groups/$workspaceId/datasets/$datasetId/refreshes"

Write-Host "Refreshing..."

Invoke-PowerBIRestMethod -Method Post -Url $datasetRefreshUrl 

当然，这些脚本可以扩展为自动处理工作区中的所有报告，或者枚举所有工作区等，但这取决于您组织中的部署，我们不知道详细信息。