Run JS DCE gradle task in a separate process

compiler/compiler-runner/src/org/jetbrains/kotlin/compilerRunner/KotlinCompilerRunner.kt

@@ -147,12 +147,16 @@ abstract class KotlinCompilerRunner<in Env : CompilerEnvironment> {
             environment: Env
     ): ExitCode?
 
-    protected fun exitCodeFromProcessExitCode(code: Int): ExitCode {
-        val exitCode = ExitCode.values().find { it.code == code }
-        if (exitCode != null) return exitCode
+    protected fun exitCodeFromProcessExitCode(code: Int): ExitCode = Companion.exitCodeFromProcessExitCode(log, code)
 
-        log.debug("Could not find exit code by value: $code")
-        return if (code == 0) ExitCode.OK else ExitCode.COMPILATION_ERROR
+    companion object {
+        fun exitCodeFromProcessExitCode(log: KotlinLogger, code: Int): ExitCode {
+            val exitCode = ExitCode.values().find { it.code == code }
+            if (exitCode != null) return exitCode
+
+            log.debug("Could not find exit code by value: $code")
+            return if (code == 0) ExitCode.OK else ExitCode.COMPILATION_ERROR
+        }
     }
 }
 

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/compilerRunner/GradleKotlinCompilerRunner.kt

@@ -16,8 +16,6 @@
 
 package org.jetbrains.kotlin.compilerRunner
 
-import net.rubygrapefruit.platform.Native
-import net.rubygrapefruit.platform.ProcessLauncher
 import org.gradle.api.Project
 import org.jetbrains.kotlin.cli.common.ExitCode
 import org.jetbrains.kotlin.cli.common.arguments.CommonCompilerArguments
@@ -37,8 +35,9 @@ import org.jetbrains.kotlin.daemon.common.*
 import org.jetbrains.kotlin.gradle.plugin.ParentLastURLClassLoader
 import org.jetbrains.kotlin.gradle.plugin.kotlinDebug
 import org.jetbrains.kotlin.incremental.*
-
-import java.io.*
+import java.io.ByteArrayOutputStream
+import java.io.File
+import java.io.PrintStream
 import kotlin.concurrent.thread
 
 internal const val KOTLIN_COMPILER_EXECUTION_STRATEGY_PROPERTY = "kotlin.compiler.execution.strategy"
@@ -286,25 +285,7 @@ internal class GradleCompilerRunner(private val project: Project) : KotlinCompil
             compilerClassName: String,
             environment: GradleCompilerEnvironment
     ): ExitCode {
-        val javaBin = System.getProperty("java.home") + File.separator + "bin" + File.separator + "java"
-        val classpathString = environment.compilerClasspath.map {it.absolutePath}.joinToString(separator = File.pathSeparator)
-        val builder = ProcessBuilder(javaBin, "-cp", classpathString, compilerClassName, *argsArray)
-        val process = launchProcessWithFallback(builder, DaemonReportingTargets(messageCollector = loggingMessageCollector))
-
-        // important to read inputStream, otherwise the process may hang on some systems
-        val readErrThread = thread {
-            process.errorStream!!.bufferedReader().forEachLine {
-                System.err.println(it)
-            }
-        }
-        process.inputStream!!.bufferedReader().forEachLine {
-            System.out.println(it)
-        }
-        readErrThread.join()
-
-        val exitCode = process.waitFor()
-        logFinish(OUT_OF_PROCESS_EXECUTION_STRATEGY)
-        return exitCodeFromProcessExitCode(exitCode)
+        return runToolInSeparateProcess(argsArray, compilerClassName, environment.compilerClasspath, log, loggingMessageCollector)
     }
 
     private fun compileInProcess(
@@ -334,9 +315,7 @@ internal class GradleCompilerRunner(private val project: Project) : KotlinCompil
         return exitCode
     }
 
-    private fun logFinish(strategy: String) {
-        log.debug("Finished executing kotlin compiler using $strategy strategy")
-    }
+    private fun logFinish(strategy: String) = log.logFinish(strategy)
 
     override fun getDaemonConnection(environment: GradleCompilerEnvironment): CompileServiceSession? {
         val compilerId = CompilerId.makeCompilerId(environment.compilerClasspath)

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/compilerRunner/utils.kt

@@ -16,13 +16,21 @@
 
 package org.jetbrains.kotlin.compilerRunner
 
+import org.jetbrains.kotlin.cli.common.ExitCode
+import org.jetbrains.kotlin.cli.common.messages.CompilerMessageLocation
+import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity
+import org.jetbrains.kotlin.cli.common.messages.MessageCollector
+import org.jetbrains.kotlin.cli.common.messages.MessageRenderer
 import org.jetbrains.kotlin.config.KotlinCompilerVersion
+import org.jetbrains.kotlin.daemon.client.DaemonReportingTargets
+import org.jetbrains.kotlin.daemon.client.launchProcessWithFallback
 import org.jetbrains.org.objectweb.asm.ClassReader
 import org.jetbrains.org.objectweb.asm.ClassVisitor
 import org.jetbrains.org.objectweb.asm.FieldVisitor
 import org.jetbrains.org.objectweb.asm.Opcodes
 import java.io.File
 import java.util.zip.ZipFile
+import kotlin.concurrent.thread
 
 internal fun loadCompilerVersion(compilerJar: File): String {
     var result = "<unknown>"
@@ -45,3 +53,65 @@ internal fun loadCompilerVersion(compilerJar: File): String {
 
     return result
 }
+
+internal fun runToolInSeparateProcess(
+        argsArray: Array<String>, compilerClassName: String, classpath: List<File>,
+        logger: KotlinLogger, messageCollector: MessageCollector
+): ExitCode {
+    val javaBin = System.getProperty("java.home") + File.separator + "bin" + File.separator + "java"
+    val classpathString = classpath.map {it.absolutePath}.joinToString(separator = File.pathSeparator)
+    val builder = ProcessBuilder(javaBin, "-cp", classpathString, compilerClassName, *argsArray)
+    val process = launchProcessWithFallback(builder, DaemonReportingTargets(messageCollector = messageCollector))
+
+    // important to read inputStream, otherwise the process may hang on some systems
+    val readErrThread = thread {
+        process.errorStream!!.bufferedReader().forEachLine {
+            System.err.println(it)
+        }
+    }
+    process.inputStream!!.bufferedReader().forEachLine {
+        System.out.println(it)
+    }
+    readErrThread.join()
+
+    val exitCode = process.waitFor()
+    logger.logFinish(OUT_OF_PROCESS_EXECUTION_STRATEGY)
+    return exitCodeFromProcessExitCode(logger, exitCode)
+}
+
+internal fun createLoggingMessageCollector(log: KotlinLogger): MessageCollector = object : MessageCollector {
+    private var hasErrors = false
+    private val messageRenderer = MessageRenderer.PLAIN_FULL_PATHS
+
+    override fun clear() {
+        hasErrors = false
+    }
+
+    override fun hasErrors(): Boolean = hasErrors
+
+    override fun report(severity: CompilerMessageSeverity, message: String, location: CompilerMessageLocation?) {
+        val locMessage = messageRenderer.render(severity, message, location)
+        when (severity) {
+            CompilerMessageSeverity.EXCEPTION -> log.error(locMessage)
+            CompilerMessageSeverity.ERROR,
+            CompilerMessageSeverity.STRONG_WARNING,
+            CompilerMessageSeverity.WARNING,
+            CompilerMessageSeverity.INFO -> log.info(locMessage)
+            CompilerMessageSeverity.LOGGING -> log.debug(locMessage)
+            CompilerMessageSeverity.OUTPUT -> {
+            }
+        }
+    }
+}
+
+internal fun KotlinLogger.logFinish(strategy: String) {
+    debug("Finished executing kotlin compiler using $strategy strategy")
+}
+
+internal fun exitCodeFromProcessExitCode(log: KotlinLogger, code: Int): ExitCode {
+    val exitCode = ExitCode.values().find { it.code == code }
+    if (exitCode != null) return exitCode
+
+    log.debug("Could not find exit code by value: $code")
+    return if (code == 0) ExitCode.OK else ExitCode.COMPILATION_ERROR
+}

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/tasks/KotlinJsDce.kt

@@ -18,10 +18,12 @@ package org.jetbrains.kotlin.gradle.tasks
 
 import org.gradle.api.Project
 import org.gradle.api.tasks.TaskAction
-import org.jetbrains.kotlin.cli.common.CLITool
 import org.jetbrains.kotlin.cli.common.arguments.K2JSDceArguments
 import org.jetbrains.kotlin.cli.js.dce.K2JSDce
 import org.jetbrains.kotlin.compilerRunner.ArgumentUtils
+import org.jetbrains.kotlin.compilerRunner.GradleKotlinLogger
+import org.jetbrains.kotlin.compilerRunner.createLoggingMessageCollector
+import org.jetbrains.kotlin.compilerRunner.runToolInSeparateProcess
 import org.jetbrains.kotlin.gradle.dsl.KotlinJsDce
 import org.jetbrains.kotlin.gradle.dsl.KotlinJsDceOptions
 import org.jetbrains.kotlin.gradle.dsl.KotlinJsDceOptionsImpl
@@ -53,7 +55,11 @@ open class KotlinJsDce : AbstractKotlinCompileTool<K2JSDceArguments>(), KotlinJs
         dceOptionsImpl.updateArguments(args)
         args.declarationsToKeep = keep.toTypedArray()
         val argsArray = ArgumentUtils.convertArgumentsToStringList(args).toTypedArray()
-        val exitCode = CLITool.doMainNoExit(K2JSDce(), argsArray + outputDirArgs + inputFiles)
+
+        val log = GradleKotlinLogger(project.logger)
+        val allArgs = argsArray + outputDirArgs + inputFiles
+        val exitCode = runToolInSeparateProcess(allArgs, K2JSDce::class.java.name, listOf(compilerJar),
+                log, createLoggingMessageCollector(log))
         throwGradleExceptionIfError(exitCode)
     }
 }