具有外部依赖关系的Moqui脚本

Question

我编写了一个小组件，它需要从Google BigQuery表中提取数据，以便稍后将其保存为Party。

因此，我创建了一个新组件，其中我有一个服务，其中有一个操作来调用一个脚本和一个脚本。在组件上，我还添加了一个build.gradle来向google添加依赖项。

问题是，当我尝试从脚本导入bigquery库时，它说它找不到它们。

组件/mycomponent/{数据、实体、屏幕、脚本、服务}

mycomponent/component.xml：

<?xml version="1.0" encoding="UTF-8"?>
<component xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://moqui.org/xsd/moqui-conf-2.1.xsd"
    name="mycomponent" version="${moqui_version}">
</component>

mycomponent/build.gradle：

apply plugin: 'groovy'

sourceCompatibility = '1.8'
def moquiDir = file(projectDir.absolutePath + '/../../..')
def frameworkDir = file(moquiDir.absolutePath + '/framework')

// maybe in the future: repositories { mavenCentral() }
repositories {
    flatDir name: 'localLib', dirs: frameworkDir.absolutePath + '/lib'
    jcenter()
}

dependencies {
    compile project(':framework')
    testCompile project(':framework').configurations.testCompile.allDependencies
    compile 'com.google.cloud:google-cloud-bigquery:1.40.0'
}

// by default the Java plugin runs test on build, change to not do that (only run test if explicit task)
// no longer workds as of gradle 4.8 or possibly earlier, use clear() instead: check.dependsOn.remove(test)
check.dependsOn.clear()

test {
    dependsOn cleanTest
    dependsOn ':runtime:component:mantle-usl:test'

    systemProperty 'moqui.runtime', moquiDir.absolutePath + '/runtime'
    systemProperty 'moqui.conf', 'conf/MoquiDevConf.xml'
    systemProperty 'moqui.init.static', 'true'

    // show standard out and standard error of the test JVM(s) on the console
    testLogging.showStandardStreams = true; testLogging.showExceptions = true

    classpath += files(sourceSets.main.output.classesDirs)
    // filter out classpath entries that don't exist (gradle adds a bunch of these), or ElasticSearch JarHell will blow up
    classpath = classpath.filter { it.exists() }

    beforeTest { descriptor -> logger.lifecycle("Running test: ${descriptor}") }
}

mycomponent/services/myservice.xml：

<services xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://moqui.org/xsd/service-definition-2.1.xsd">
    <service verb="sync" noun="myservice">
        <in-parameters/>
        <out-parameters/>
        <actions>
            <script location="component://mycomponent/script/pullClientesBQ.groovy" />
        </actions>
    </service>
</services>

mycomponent/script/pullClientesBQ.groovy：

import com.google.cloud.bigquery.BigQuery
import com.google.cloud.bigquery.BigQueryOptions
import com.google.cloud.bigquery.FieldValueList
import com.google.cloud.bigquery.QueryJobConfiguration
// Script code follows.

然后，我转到Tools web接口来运行该服务，并：

17:47:13.788错误110121908-17运行groovy脚本(org.codehaus.groovy.control.MultipleCompilationErrorsException:启动失败: component___intermegaBaseClientes_script_pullClientesBQ_groovy: 1:无法解析类com.google.cloud.bigquery.BigQuery @第1行，第1列，导入com.google.cloud.bigquery.BigQuery

那么，我如何(正确地)在组件的脚本上使用外部库呢？

谢谢

Answer 1

有关组件中约定使用的目录和文件的说明，请参阅此处的Moqui组件结构文档：

https://www.moqui.org/docs/framework/Tool+and+Config+Overview#extensions-and-add-ons

这里有一个'lib‘目录的描述，这就是如何在Moqui组件中的类路径上获取JAR文件。我刚刚为支持的文件添加了一些额外的细节，包括build.gradle，以及与这个问题相关的注释。

简而言之，真正的问题是如何在Java类路径上获取内容，这是使用Moqui组件目录中的'classes‘和'lib’目录完成的。您所缺少的是要在build.gradle文件中复制构建并依赖于JAR文件到'lib‘目录的东西。下面是一个可以添加到build.gradle文件中以执行以下操作的示例：

task cleanLib(type: Delete) { delete fileTree(dir: projectDir.absolutePath+'/lib', include: '*') }
clean.dependsOn cleanLib

jar {
    destinationDir = file(projectDir.absolutePath + '/lib')
    baseName = jarBaseName
}
task copyDependencies { doLast {
    copy { from (configurations.runtime - project(':framework').configurations.runtime - project(':framework').jar.archivePath)
        into file(projectDir.absolutePath + '/lib') }
} }
copyDependencies.dependsOn cleanLib
jar.dependsOn copyDependencies

将“lib”目录添加到组件目录中的.gitignore文件中也是一个好主意，这样JAR文件就不会意外地被添加到git中。