Question

我正在尝试编写一个powershell脚本来更新下面的每个DiagnosticsConnectionString和DataConnectionString值，但我似乎无法使用

找到每个单独的Role节点

$serviceconfig.ServiceConfiguration.SelectSingleNode("Role[@name='MyService_WorkerRole']")

执行echo $serviceconfig.ServiceConfiguration.Role为我列出了两个角色节点，所以我知道它正在努力达到这一点，但之后我没有取得多大成功。

其中$ serviceConfig包含以下XML：

<?xml version="1.0"?>
<ServiceConfiguration serviceName="MyService"  xmlns="http://schemas.microsoft.com/ServiceHosting/2008/10/ServiceConfiguration">
  <Role name="MyService_WorkerRole">
    <Instances count="1" />
    <ConfigurationSettings>
      <Setting name="DiagnosticsConnectionString" value="really long string" />
      <Setting name="DataConnectionString" value="really long string 2" />
    </ConfigurationSettings>
  </Role>
  <Role name="MyService_WebRole">
    <Instances count="1" />
    <ConfigurationSettings>
      <Setting name="DiagnosticsConnectionString" value="really long string 3" />
      <Setting name="DataConnectionString" value="really long string 4" />
    </ConfigurationSettings>
  </Role>
</ServiceConfiguration>

Answer 1

我会跳过XPath，只使用PowerShell进行过滤。

$serviceConfig.ServiceConfiguration.Role |
    ? { $_.name -eq 'MyService_WorkerRole' } |
    % { $_.ConfigurationSettings.Setting } |
    ? { $_.name -like 'Diag*' } |
    % { $_.value = 'sup' }

此时如果我们这样做......

$serviceConfig.ServiceConfiguration.Role[1].ConfigurationSettings.OuterXml

我们会得到这个......

<ConfigurationSettings xmlns="http://schemas.microsoft.com/ServiceHosting/2008/10/ServiceConfiguration">
  <Setting name="DiagnosticsConnectionString" value="sup" />
  <Setting name="DataConnectionString" value="really long string 2" />
</ConfigurationSettings>

使用Powershell更新Azure服务配置文件

1 个答案: