野生苍蝇CLI添加/更新系统属性批处理和if- and问题

Question

我测试了通过Wildfly插件在Wildfly (Version8.2.1) standalone.xml中添加一个系统属性的几个变体。基本上，如果不存在系统属性，则添加系统属性；如果存在，则更改其值。理想情况下，我需要一个批处理模式的CLI脚本，并使用嵌套的if-else。然而，问题是：

1. 它不能在批处理模式下工作
2. 嵌套if-else即使在非批处理模式下也不能工作。
3. 类似的结果，如果在CLI脚本中执行-批处理和嵌套if -否则不工作。

这是我pom.xml中的插件部分

<plugin>
    <groupId>org.wildfly.plugins</groupId>
    <artifactId>wildfly-maven-plugin</artifactId>
    <version>1.0.2.Final</version>
    <executions>
        <execution>
            <id>addConfig</id>
            <phase>install</phase>
            <goals><goal>execute-commands</goal></goals>
            <configuration>
                <execute-commands>
                    <!-- <batch>true</batch>  Issue #1. Not working in batch mode -->
                    <batch>false</batch> <!-- This works -->
                    <commands>
                        <command>if (outcome != success) of /system-property=app.env:read-resource</command>
                        <command>/system-property=app.env:add(value=local)</command>
                        <command>else</command>
                        <command>/system-property=app.env:remove</command>
                        <command>/system-property=app.env:add(value=local)</command>
                        <command>end-if</command>
                    </commands>

                    <!--  Issue #2. Nested if-else not working, even in non-batch mode -->
                    <!--
                    <batch>false</batch>
                    <commands>
                        <command>if (outcome != success) of /system-property=app.env:read-resource</command>
                            <command>/system-property=app.env:add(value=local)</command>
                        <command>else</command>
                        <command>if (result.value == qa) of /system-property=app.env:read-resource</command>
                            <command>/system-property=app.env:remove</command>
                            <command>/system-property=app.env:add(value=local)</command>
                        <command>else</command>
                            <command>/system-property=app.env:remove</command>
                            <command>/system-property=app.env:add(value=qa)</command>
                        <command>end-if</command>
                        <command>end-if</command>
                    </commands>
                    -->

                    <!--  Issue #3. Batch and nested if-else not working in CLI script. -->
                    <!--
                    <scripts>
                        <script>target/classes/scripts/add-config.cli</script>
                    </scripts>
                    -->
                </execute-commands>
            </configuration>    
        </execution>            
    </executions>
</plugin>   

以下是批处理模式下的例外情况：

org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.wildfly.plugins:wildfly-maven-plugin:1.0.2.Final:execute-commands (addConfig)
 on project jboss-config: Execution addConfig of goal org.wildfly.plugins:wildfly-maven-plugin:1.0.2.Final:execute-commands failed: Command 'if (outcome != success) of /system-property=app.env:read-resource' is invalid. The command is not allowed in a batch.
        at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution addConfig of goal org.wildfly.plugins:wildfly-maven-plugin:1.0.2.Final:execute-commands failed: Command 'if (outcome != success) of /system-property=app.env:read-resource' is invalid. The command is not allowed in a batch.
        ... 20 more
Caused by: java.lang.IllegalArgumentException: Command 'if (outcome != success) of /system-property=app.env:read-resource' is invalid. The command is not allowed in a batch.
        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
        ... 21 more
Caused by: org.jboss.as.cli.operation.OperationFormatException: The command is not allowed in a batch.
        ... 24 more

如果它有一个嵌套的if -否则，非批处理，则为例外情况：

org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.wildfly.plugins:wildfly-maven-plugin:1.0.2.Final:execute-commands (addConfig)
 on project jboss-config: Execution addConfig of goal org.wildfly.plugins:wildfly-maven-plugin:1.0.2.Final:execute-commands failed: Command 'if (result.value == qa) of /system-property=app.env:read-resource' is invalid. if is not allowed while in batch mode.
        ...
        at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution addConfig of goal org.wildfly.plugins:wildfly-maven-plugin:1.0.2.Final:execute-commands failed: Command 'if (result.value == qa) of /system-property=app.env:read-resource' is invalid. if is not allowed while in batch mode.
        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:145)
        ... 20 more
Caused by: java.lang.IllegalArgumentException: Command 'if (result.value == qa) of /system-property=app.env:read-resource' is invalid. if is not allowed while in batch mode.
        at org.wildfly.plugin.cli.Commands.executeCommands(Commands.java:178)
        ... 21 more
Caused by: org.jboss.as.cli.CommandFormatException: if is not allowed while in batch mode.
        at org.jboss.as.cli.handlers.ifelse.IfHandler.doHandle(IfHandler.java:130)
        ... 24 more

为了完整起见，下面是我想运行的脚本

batch
if (outcome != success) of /system-property=app.env:read-resource
    /system-property=app.env:add(app.env=local)
else
if (result.value == qa) of /system-property=app.env:read-resource
    /system-property=app.env:remove
    /system-property=app.env:add(app.env=local)
else
    /system-property=app.env:remove
    /system-property=app.env:add(app.env=qa)
end-if
end-if
run-batch

而实际运行的是：

if (outcome != success) of /system-property=app.env:read-resource
    /system-property=app.env:add(value=local)
else
    /system-property=app.env:remove
    /system-property=app.env:add(value=local)
end-if

Answer 1

问题是在批处理模式下不允许if-else流，就好像语句已经作为批处理执行一样。这也意味着不允许嵌套if语句。

不过，下面这样的方法是可行的

if (outcome != success) of /system-property=app.env:read-resource
    /system-property=app.env:add(value=local)
end-if

if (result.value == qa) of /system-property=app.env:read-resource
    /system-property=app.env:remove
    /system-property=app.env:add(value=local)
else
    /system-property=app.env:remove
    /system-property=app.env:add(value=qa)
end-if

如果缺少该属性，这将添加它，然后删除它，然后重新添加它。这是唯一能让它发挥作用的方法，也不是一个昂贵的手术。

注意，您发布的脚本有点差。在添加系统属性时，value属性将用于add操作。此外，属性名还混合了test和app.env。