/
Main.scala
69 lines (58 loc) · 2.49 KB
/
Main.scala
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// Copyright (c) 2019 Digital Asset (Switzerland) GmbH and/or its affiliates. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package com.digitalasset.codegen
import java.io.File
import java.nio.file.Path
import ch.qos.logback.classic.Level
import com.digitalasset.daml.lf.codegen.conf.Conf
import com.typesafe.scalalogging.StrictLogging
import org.slf4j.{Logger, LoggerFactory}
import scalaz.Cord
import scala.collection.breakOut
object Main extends StrictLogging {
private val codegenId = "Scala Codegen"
def main(args: Array[String]): Unit =
Conf.parse(args) match {
case Some(Conf(darMap, outputDir, decoderPkgAndClass, verbosity, roots)) =>
setGlobalLogLevel(verbosity)
logUnsupportedEventDecoderOverride(decoderPkgAndClass)
val (dars, packageName) = darsAndOnePackageName(darMap)
CodeGen.generateCode(dars, packageName, outputDir.toFile, CodeGen.Novel, roots)
case None =>
throw new IllegalArgumentException(
s"Invalid ${codegenId: String} command line arguments: ${args.mkString(" "): String}")
}
private def setGlobalLogLevel(verbosity: Level): Unit = {
LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME) match {
case a: ch.qos.logback.classic.Logger =>
a.setLevel(verbosity)
logger.info(s"${codegenId: String} verbosity: $verbosity")
case _ =>
logger.warn(s"${codegenId: String} cannot set requested verbosity: $verbosity")
}
}
private def logUnsupportedEventDecoderOverride(mapping: Option[(String, String)]): Unit =
mapping.foreach {
case (a, b) =>
logger.warn(
s"${codegenId: String} does not allow overriding Event Decoder, skipping: ${a: String} -> ${b: String}")
}
private def darsAndOnePackageName(darMap: Map[Path, Option[String]]): (List[File], String) = {
val dars: List[File] = darMap.keys.map(_.toFile)(breakOut)
val uniquePackageNames: Set[String] = darMap.values.collect { case Some(x) => x }(breakOut)
uniquePackageNames.toSeq match {
case Seq(packageName) =>
(dars, packageName)
case _ =>
throw new IllegalStateException(
s"${codegenId: String} expects all dars mapped to the same package name, " +
s"requested: ${format(darMap): String}")
}
}
private def format(map: Map[Path, Option[String]]): String = {
val cord = map.foldLeft(Cord("{")) { (str, kv) =>
str ++ kv._1.toFile.getAbsolutePath ++ "->" ++ kv._2.toString ++ ","
}
(cord ++ "}").toString
}
}