Jboss 在用于if/else逻辑的Wildfly CLI脚本中使用属性

在Wildfly CLI脚本中，可以测试资源是否存在并执行一些条件逻辑：

if (outcome != success) of /subsystem=datasources/xa-data-source=MY_DATASOURCE:read-resource  
// now do something  

运行cli时，可以提供脚本中可用的属性，如下所示：

$JBOSS_HOME/bin/jboss-cli.sh --file=my.cli --properties=my.properties  

if (outcome != success) of /system-property=foo:read-resource  
 // now do something  

我想介绍一些基于这些属性的条件逻辑来进行一些条件配置

例如，要配置邮件服务器，有时邮件服务器需要用户名和密码，而在其他情况下，它允许匿名访问。当设置邮件服务器配置时，我希望能够有这样的条件逻辑

if MAILSERVER_USERNAME is defined //confiure mailserver with username password else // configure mailserver without attributes username/password

我唯一能看到的是，如果我已经在standalone-full.xml中添加了一个系统属性设置，我可以这样查询它：

$JBOSS_HOME/bin/jboss-cli.sh --file=my.cli --properties=my.properties  

if (outcome != success) of /system-property=foo:read-resource  
 // now do something  

我想根据从my.properties传入的属性执行一些简单的操作

这可能吗

谢谢

---

Daniel

您通过的属性

--properties

不能在所有上下文中使用，这使得测试它们的存在非常麻烦：

[standalone@localhost] :resolve-expression(expression=$myProperty)
Unrecognized variable myProperty
[standalone@localhost] :resolve-expression(expression=${myProperty})
{
    "outcome" => "failed",
    "failure-description" => "WFLYCTL0211: Cannot resolve expression '${myProperty}'",
    "rolled-back" => true
}

但是，您可以通过在cli脚本中使用

set

命令来解决该问题：

[standalone@localhost] set myProperty=${myProperty}
[standalone@localhost] :resolve-expression(expression=$myProperty)
{
    "outcome" => "success",
    "result" => "myValue"
}

然后，您可以使用

resolve expression

命令的结果来测试您的属性是否存在：

[standalone@localhost] if (outcome == success) of :resolve-expression(expression=$myProperty)
[standalone@localhost] echo success ! myProperty is set ( $myProperty )
[standalone@localhost] end-if
success ! myProperty is set ( myValue )

如果未定义属性，尝试使用

resolve expression

解析该属性将引发错误：

[standalone@localhost] set myProperty=${notMyProperty}
[standalone@localhost] :resolve-expression(expression=$myProperty)
{
    "outcome" => "failed",
    "failure-description" => "WFLYCTL0211: Cannot resolve expression '${notMyProperty}'",
    "rolled-back" => true
}

---

您通过

--properties

传递的属性不能在所有上下文中使用，这使得测试它们的存在变得麻烦：

[standalone@localhost] :resolve-expression(expression=$myProperty)
Unrecognized variable myProperty
[standalone@localhost] :resolve-expression(expression=${myProperty})
{
    "outcome" => "failed",
    "failure-description" => "WFLYCTL0211: Cannot resolve expression '${myProperty}'",
    "rolled-back" => true
}

但是，您可以通过在cli脚本中使用

set

命令来解决该问题：

[standalone@localhost] set myProperty=${myProperty}
[standalone@localhost] :resolve-expression(expression=$myProperty)
{
    "outcome" => "success",
    "result" => "myValue"
}

然后，您可以使用

resolve expression

命令的结果来测试您的属性是否存在：

[standalone@localhost] if (outcome == success) of :resolve-expression(expression=$myProperty)
[standalone@localhost] echo success ! myProperty is set ( $myProperty )
[standalone@localhost] end-if
success ! myProperty is set ( myValue )

如果未定义属性，尝试使用

resolve expression

解析该属性将引发错误：

[standalone@localhost] set myProperty=${notMyProperty}
[standalone@localhost] :resolve-expression(expression=$myProperty)
{
    "outcome" => "failed",
    "failure-description" => "WFLYCTL0211: Cannot resolve expression '${notMyProperty}'",
    "rolled-back" => true
}