在Wildfly CLI脚本中,可以测试资源的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,您可以提供脚本中可用的属性,如下所示:
$JBOSS_HOME/bin/jboss-cli.sh --file=my.cli --properties=my.properties
我想基于这些属性介绍一些条件逻辑,以进行一些条件配置。
一个示例是配置邮件服务器,有时邮件服务器需要用户名和密码,而在其他情况下,它允许匿名访问。设置邮件服务器配置时,我希望能够具有这样的条件逻辑
if MAILSERVER_USERNAME is defined //confiure mailserver with username password else // configure mailserver without attributes username/password
我唯一可以看到的是,如果我已经在我的standalone-full.xml中添加了系统属性设置,我可以这样查询它:
if (outcome != success) of /system-property=foo:read-resource
// now do something
我想根据从my.properties传入的属性做一些类似的事情。
这可能吗?
谢谢
丹尼尔
答案 0 :(得分:2)
您无法通过--properties
传递的属性可以在每种情况下使用,这使得测试它们的存在变得很麻烦:
[standalone@localhost] :resolve-expression(expression=$myProperty)
Unrecognized variable myProperty
[standalone@localhost] :resolve-expression(expression=${myProperty})
{
"outcome" => "failed",
"failure-description" => "WFLYCTL0211: Cannot resolve expression '${myProperty}'",
"rolled-back" => true
}
不过,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
命令的结果来测试属性的存在:
[standalone@localhost] if (outcome == success) of :resolve-expression(expression=$myProperty)
[standalone@localhost] echo success ! myProperty is set ( $myProperty )
[standalone@localhost] end-if
success ! myProperty is set ( myValue )
如果未定义您的媒体资源,尝试使用resolve-expression
来解决它会产生错误:
[standalone@localhost] set myProperty=${notMyProperty}
[standalone@localhost] :resolve-expression(expression=$myProperty)
{
"outcome" => "failed",
"failure-description" => "WFLYCTL0211: Cannot resolve expression '${notMyProperty}'",
"rolled-back" => true
}