com.parmet.buf.gradle.Config.kt Maven / Gradle / Ivy

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Buf plugin for Gradle

There is a newer version: 0.8.5

package com.parmet.buf.gradle

import org.gradle.api.Project
import org.gradle.api.tasks.Copy
import org.gradle.kotlin.dsl.register
import java.io.File

const val COPY_BUF_CONFIG_TASK_NAME = "copyBufConfig"

internal fun Project.configureCopyBufConfig(ext: BufExtension) {
    tasks.register(COPY_BUF_CONFIG_TASK_NAME) {
        from(listOfNotNull(bufConfigFile(ext)))
        into(bufbuildDir)
        rename { "buf.yaml" }
    }
}

private fun Project.bufConfigFile(ext: BufExtension) =
    project.resolveConfig(ext).let {
        if (it != null) {
            logger.info("Using buf config from $it")
            it
        } else {
            val configFile = project.file("buf.yaml")
            if (configFile.exists()) {
                logger.info("Using buf config from default location (project directory)")
                configFile
            } else {
                logger.info("Using default buf config")
                null
            }
        }
    }

private fun Project.resolveConfig(ext: BufExtension): File? =
    configurations.getByName(BUF_CONFIGURATION_NAME).let {
        if (it.dependencies.isNotEmpty()) {
            check(ext.configFileLocation == null) {
                "Buf lint configuration specified with a config file location and a dependency; pick one."
            }
            checkNotNull(it.files.singleOrNull()) {
                "Buf lint configuration should have exactly one file; had ${it.files}."
            }
        } else {
            ext.configFileLocation
        }
    }