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Updates PIG Gradle Plugin for publication (#145)
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pig-gradle-plugin/src/main/kotlin/org/partiql/pig/gradle/PigPlugin.kt
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| /* | ||
| * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"). | ||
| * You may not use this file except in compliance with the License. | ||
| * A copy of the License is located at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * or in the "license" file accompanying this file. This file is distributed | ||
| * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either | ||
| * express or implied. See the License for the specific language governing | ||
| * permissions and limitations under the License. | ||
| */ | ||
|
|
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| package org.partiql.pig.gradle | ||
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| import org.gradle.api.DefaultTask | ||
| import org.gradle.api.Plugin | ||
| import org.gradle.api.Project | ||
| import org.gradle.api.file.SourceDirectorySet | ||
| import org.gradle.api.plugins.JavaPlugin | ||
| import org.gradle.api.provider.Property | ||
| import org.gradle.api.tasks.Input | ||
| import org.gradle.api.tasks.Optional | ||
| import org.gradle.api.tasks.SourceSet | ||
| import org.gradle.api.tasks.SourceSetContainer | ||
| import org.gradle.api.tasks.TaskAction | ||
| import org.gradle.api.tasks.options.Option | ||
| import org.partiql.pig.main | ||
| import java.io.File | ||
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| abstract class PigPlugin : Plugin<Project> { | ||
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| override fun apply(target: Project) { | ||
| // Ensure `sourceSets` extension exists | ||
| target.pluginManager.apply(JavaPlugin::class.java) | ||
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| // Adds pig source set extension to all source sets | ||
| target.sourceSets().forEach { sourceSet -> | ||
| val name = sourceSet.name | ||
| val sds = target.objects.sourceDirectorySet(name, "$name PIG source") | ||
| sds.srcDir("src/$name/pig") | ||
| sds.include("**/*.ion") | ||
| sourceSet.extensions.add("pig", sds) | ||
| } | ||
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| // Extensions for pig compiler arguments | ||
| val ext = target.extensions.create("pig", PigExtension::class.java) | ||
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| // Create tasks after source sets have been evaluated | ||
| target.afterEvaluate { | ||
| target.sourceSets().forEach { sourceSet -> | ||
| // Pig generate all for the given source set | ||
| val pigAllTaskName = getPigAllTaskName(sourceSet) | ||
| val pigAllTask = target.tasks.create(pigAllTaskName) { | ||
| it.group = "pig" | ||
| it.description = "Generate all PIG sources for ${sourceSet.name} source set" | ||
| } | ||
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| val language = ext.language | ||
| val namespace = ext.namespace | ||
| var outDir = ext.outputDir | ||
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| // The `kotlin` target without an `outputDir` will use the package path as the output dir | ||
| if (outDir == null && language == "kotlin") { | ||
| val base = "${target.buildDir}/generated-src" | ||
| outDir = File("$base/${namespace.replace('.', '/')}") | ||
| // Eventually this will need to be sourceSet.kotlin, but that's currently not possible | ||
| // sourceSet.java.srcDir(base) | ||
| } | ||
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| // Create a pig task for each type universe and each source set | ||
| (sourceSet.extensions.getByName("pig") as SourceDirectorySet).files.forEach { file -> | ||
| val universeName = file.name.removeSuffix(".ion").lowerToCamelCase().capitalize() | ||
| val pigTask = target.tasks.create(pigAllTaskName + universeName, PigTask::class.java) { task -> | ||
| task.description = "Generated PIG sources for $file" | ||
| task.universe.set(file.absolutePath) | ||
| task.target.set(language) | ||
| if (namespace.isNotEmpty()) { | ||
| task.namespace.set(namespace) | ||
| } | ||
| if (outDir != null) { | ||
| task.outputDir.set(outDir.absolutePath) | ||
| } | ||
| if (ext.outputFile != null) { | ||
| task.outputFile.set(ext.outputFile!!.absolutePath) | ||
| } | ||
| if (ext.template.isNotEmpty()) { | ||
| task.template.set(ext.template) | ||
| } | ||
| } | ||
| pigAllTask.dependsOn(pigTask) | ||
| if (language == "kotlin") { | ||
| target.tasks.named("compileKotlin") { | ||
| it.dependsOn(pigAllTask) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| private fun Project.sourceSets(): List<SourceSet> = extensions.getByType(SourceSetContainer::class.java).toList() | ||
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| private fun getPigAllTaskName(sourceSet: SourceSet) = when (SourceSet.isMain(sourceSet)) { | ||
| true -> "generatePigSource" | ||
| else -> "generatePig${sourceSet.name.capitalize()}Source" | ||
| } | ||
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| /** | ||
| * Type Universe files are lower hyphen, but Gradle tasks are lower camel | ||
| */ | ||
| private fun String.lowerToCamelCase(): String = | ||
| this.split('-') | ||
| .filter { it.isNotEmpty() } | ||
| .mapIndexed { i, str -> | ||
| when (i) { | ||
| 0 -> str | ||
| else -> str.capitalize() | ||
| } | ||
| } | ||
| .joinToString(separator = "") | ||
| } | ||
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| abstract class PigTask : DefaultTask() { | ||
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| init { | ||
| group = "pig" | ||
| } | ||
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| @get:Input | ||
| @get:Option( | ||
| option = "universe", | ||
| description = "Type universe input file" | ||
| ) | ||
| abstract val universe: Property<String> | ||
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| @get:Input | ||
| @get:Option( | ||
| option = "target", | ||
| description = "Target language" | ||
| ) | ||
| abstract val target: Property<String> | ||
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| @get:Input | ||
| @get:Optional | ||
| @get:Option( | ||
| option = "outputFile", | ||
| description = "Generated output file (for targets that output a single file)" | ||
| ) | ||
| abstract val outputFile: Property<String> | ||
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| @get:Input | ||
| @get:Optional | ||
| @get:Option( | ||
| option = "outputDir", | ||
| description = "Generated output directory (for targets that output multiple files)" | ||
| ) | ||
| abstract val outputDir: Property<String> | ||
|
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| @get:Input | ||
| @get:Optional | ||
| @get:Option( | ||
| option = "namespace", | ||
| description = "Namespace for generated code" | ||
| ) | ||
| abstract val namespace: Property<String> | ||
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| @get:Input | ||
| @get:Optional | ||
| @get:Option( | ||
| option = "template", | ||
| description = "Path to an Apache FreeMarker template" | ||
| ) | ||
| abstract val template: Property<String> | ||
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| @TaskAction | ||
| fun action() { | ||
| val args = mutableListOf<String>() | ||
| // required args | ||
| args += listOf("-u", universe.get()) | ||
| args += listOf("-t", target.get()) | ||
| // optional args | ||
| if (outputFile.isPresent) { | ||
| args += listOf("-o", outputFile.get()) | ||
| } | ||
| if (outputDir.isPresent) { | ||
| args += listOf("-d", outputDir.get()) | ||
| } | ||
| if (namespace.isPresent) { | ||
| args += listOf("-n", namespace.get()) | ||
| } | ||
| if (template.isPresent) { | ||
| args += listOf("-e", template.get()) | ||
| } | ||
| // invoke pig compiler, offloads all arg handling to the application | ||
| // also invoking via the public interface for consistency | ||
| println("pig ${args.joinToString(" ")}") | ||
| main(args.toTypedArray()) | ||
| } | ||
| } | ||
|
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| abstract class PigExtension { | ||
| var language: String = "kotlin" | ||
| var outputFile: File? = null | ||
| var outputDir: File? = null | ||
| var namespace: String = "" | ||
| var template: String = "" | ||
| } |
33 changes: 0 additions & 33 deletions
33
pig-gradle-plugin/src/main/kotlin/org/partiql/pig/plugin/PigExtension.kt
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