SAP Hybris使用recipe进行安装时,是如何执行ant命令的?

打开Hybris安装文件夹下的recipes,随便打开一个recipe的build.gradle文件,发现使用了installer-platform-plugin和installer-addon-plugin这两个plugin. Groovy setup任务的逻辑,也就是使用这两个plugin里的实现,根据config实例化platform对象,然后调用其setup方法和executeAntTarget方法。

这两个方法的实现源代码在哪里?这就是本文所要描述的内容。

去docs文件夹里可以找到插件的实现源代码:

到源代码里根据executeAntTarget进行搜索:

在AbstractPlatform.groovy里找到了executeAntTarget的实现逻辑,发现其delegate到了成员属性antExecutor里:

这个antExecutor的类型是HybrisAntExecutor:

找到HybrisAntExcutor,发现其只不过是调用类HybrisPluginUtils的静态方法:

静态方法之一:runProcess

实现核心:

private static void runExternalProcess(String workDir, String[] command, Closure closure) {
        def builder = new DefaultExecHandleBuilder()
        builder.setWorkingDir((new File(workDir)).absolutePath)
        builder.setCommandLine(command)
        if (closure) closure.call(builder)
        def handle = builder.build()
        handle.start()
        def result = handle.waitForFinish()

        if (result.getExitValue() != 0) {
            throw new IllegalStateException("external process returned non-zero exit code, command: ${command}")
        }
    }

运行外部程序的方法,使用的是Groovy SDK提供的import org.gradle.process.internal.DefaultExecHandleBuilder.

静态方法之二:isWindowsOs

import org.apache.tools.ant.taskdefs.condition.Os

HybrisAntExcutor方法之一:getWindowsAntCmd

    private String[] getWindowsAntCmd(String antArgs, String antOpts) {
        def antPreCommand = "set \"ANT_OPTS=${antOpts}\""
        antPreCommand += " & set \"PLATFORM_HOME=${platformHome}\""
        antPreCommand += " & set \"ANT_HOME=${platformHome}\\apache-ant-1.9.1\""
        antPreCommand += " & set \"PATH=${platformHome}\\apache-ant-1.9.1\\bin;%PATH%\""
        String antCommand = "${antPreCommand} & ant ${antArgs}"
        ['cmd', '/c', antCommand]
    }

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