[BT] Implement basic non-incremental in-process JVM compilation

compiler/build-tools/kotlin-build-tools-impl/build.gradle.kts

@@ -6,6 +6,9 @@ plugins {
 dependencies {
     api(project(":compiler:build-tools:kotlin-build-tools-api"))
     implementation(kotlinStdlib())
+    compileOnly(project(":compiler:cli"))
+    compileOnly(project(":compiler:cli-js"))
+    runtimeOnly(project(":kotlin-compiler-embeddable"))
 }
 
 publish()

compiler/build-tools/kotlin-build-tools-impl/src/main/kotlin/org/jetbrains/kotlin/buildtools/internal/CompilationServiceImpl.kt

@@ -7,10 +7,26 @@ package org.jetbrains.kotlin.buildtools.internal
 
 import org.jetbrains.kotlin.buildtools.api.CompilationResult
 import org.jetbrains.kotlin.buildtools.api.CompilationService
+import org.jetbrains.kotlin.buildtools.api.CompilerArgumentsParseException
 import org.jetbrains.kotlin.buildtools.api.CompilerExecutionStrategyConfiguration
 import org.jetbrains.kotlin.buildtools.api.jvm.*
+import org.jetbrains.kotlin.cli.common.ExitCode
+import org.jetbrains.kotlin.cli.common.arguments.parseCommandLineArguments
+import org.jetbrains.kotlin.cli.common.arguments.validateArguments
+import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity
+import org.jetbrains.kotlin.cli.jvm.K2JVMCompiler
+import org.jetbrains.kotlin.config.Services
 import java.io.File
 
+private val ExitCode.asCompilationResult
+    get() = when (this) {
+        ExitCode.OK -> CompilationResult.COMPILATION_SUCCESS
+        ExitCode.COMPILATION_ERROR -> CompilationResult.COMPILER_INTERNAL_ERROR
+        ExitCode.INTERNAL_ERROR -> CompilationResult.COMPILER_INTERNAL_ERROR
+        ExitCode.OOM_ERROR -> CompilationResult.COMPILATION_OOM_ERROR
+        else -> error("Unexpected exit code: $this")
+    }
+
 internal class CompilationServiceImpl : CompilationService {
     override fun calculateClasspathSnapshot(classpathEntry: File): ClasspathEntrySnapshot {
         TODO("Calculating classpath snapshots via the Build Tools API is not yet implemented: KT-57565")
@@ -26,7 +42,32 @@ internal class CompilationServiceImpl : CompilationService {
         sources: List<File>,
         arguments: List<String>
     ): CompilationResult {
-        println("I'm simulating compilation, nothing more yet")
+        check(strategyConfig is CompilerExecutionStrategyConfigurationImpl) {
-        return CompilationResult.COMPILATION_SUCCESS
+            "Initial strategy configuration object must be acquired from the `makeCompilerExecutionStrategyConfiguration` method."
+        }
+        check(compilationConfig is JvmCompilationConfigurationImpl) {
+            "Initial JVM compilation configuration object must be acquired from the `makeJvmCompilationConfiguration` method."
+        }
+        val loggerAdapter = KotlinLoggerMessageCollectorAdapter(compilationConfig.logger)
+        return when (strategyConfig.selectedStrategy) {
+            is CompilerExecutionStrategy.InProcess -> compileInProcess(loggerAdapter, sources, arguments)
+            is CompilerExecutionStrategy.Daemon -> TODO("The daemon strategy is not yet supported in the Build Tools API")
+        }
+    }
+
+    private fun compileInProcess(
+        loggerAdapter: KotlinLoggerMessageCollectorAdapter,
+        sources: List<File>,
+        arguments: List<String>
+    ): CompilationResult {
+        val compiler = K2JVMCompiler()
+        val parsedArguments = compiler.createArguments()
+        parseCommandLineArguments(arguments, parsedArguments)
+        validateArguments(parsedArguments.errors)?.let {
+            throw CompilerArgumentsParseException(it)
+        }
+        parsedArguments.freeArgs += sources.map { it.absolutePath } // TODO: they're not actually passed yet
+        loggerAdapter.report(CompilerMessageSeverity.INFO, arguments.toString())
+        return compiler.exec(loggerAdapter, Services.EMPTY, parsedArguments).asCompilationResult
     }
 }

compiler/build-tools/kotlin-build-tools-impl/src/main/kotlin/org/jetbrains/kotlin/buildtools/internal/CompilerExecutionStrategyConfigurationImpl.kt

@@ -8,12 +8,22 @@ package org.jetbrains.kotlin.buildtools.internal
 import org.jetbrains.kotlin.buildtools.api.CompilerExecutionStrategyConfiguration
 import java.io.File
 
-class CompilerExecutionStrategyConfigurationImpl : CompilerExecutionStrategyConfiguration {
+internal sealed interface CompilerExecutionStrategy {
+    data object InProcess : CompilerExecutionStrategy
+
+    data class Daemon(val sessionDir: File, val jvmArguments: List<String>) : CompilerExecutionStrategy
+}
+
+internal class CompilerExecutionStrategyConfigurationImpl : CompilerExecutionStrategyConfiguration {
+    internal var selectedStrategy: CompilerExecutionStrategy = CompilerExecutionStrategy.InProcess
+
     override fun useInProcessStrategy(): CompilerExecutionStrategyConfiguration {
+        selectedStrategy = CompilerExecutionStrategy.InProcess
         return this
     }
 
     override fun useDaemonStrategy(sessionDir: File, jvmArguments: List<String>): CompilerExecutionStrategyConfiguration {
-        TODO("Daemon strategy is not yet supported in the Build Tools API")
+        selectedStrategy = CompilerExecutionStrategy.Daemon(sessionDir, jvmArguments)
+        return this
     }
 }

compiler/build-tools/kotlin-build-tools-impl/src/main/kotlin/org/jetbrains/kotlin/buildtools/internal/DefaultKotlinLogger.kt

@@ -7,27 +7,54 @@ package org.jetbrains.kotlin.buildtools.internal
 
 import org.jetbrains.kotlin.buildtools.api.KotlinLogger
 
+private enum class LogLevel {
+    ERROR,
+    WARN,
+    LIFECYCLE,
+    INFO,
+    DEBUG,
+    ;
+
+    companion object {
+        fun fromString(rawValue: String) = entries.firstOrNull { it.name.equals(rawValue, ignoreCase = true) }
+            ?: error("Unknown log level for the DefaultKotlinLogger: $rawValue")
+    }
+}
+
 internal object DefaultKotlinLogger : KotlinLogger {
+    private val logLevel: LogLevel = System.getProperty("kotlin.build-tools-api.log.level")?.let {
+        LogLevel.fromString(it)
+    } ?: LogLevel.WARN
+
+    private val LogLevel.isEnabled: Boolean
+        get() = logLevel >= this
+
     override val isDebugEnabled: Boolean
-        get() = TODO("Default KotlinLogger is not yet implemented in the Build Tools API")
+        get() = LogLevel.DEBUG.isEnabled
 
     override fun error(msg: String, throwable: Throwable?) {
-        TODO("Default KotlinLogger is not yet implemented in the Build Tools API")
+        if (!LogLevel.ERROR.isEnabled) return
+        System.err.println("e: $msg")
+        throwable?.printStackTrace()
     }
 
     override fun warn(msg: String) {
-        TODO("Default KotlinLogger is not yet implemented in the Build Tools API")
+        if (!LogLevel.WARN.isEnabled) return
+        System.err.println("w: $msg")
     }
 
     override fun info(msg: String) {
-        TODO("Default KotlinLogger is not yet implemented in the Build Tools API")
+        if (!LogLevel.INFO.isEnabled) return
+        println("i: $msg")
     }
 
     override fun debug(msg: String) {
-        TODO("Default KotlinLogger is not yet implemented in the Build Tools API")
+        if (!LogLevel.DEBUG.isEnabled) return
+        println("d: $msg")
     }
 
     override fun lifecycle(msg: String) {
-        TODO("Default KotlinLogger is not yet implemented in the Build Tools API")
+        if (!LogLevel.LIFECYCLE.isEnabled) return
+        println("l: $msg")
     }
 }

compiler/build-tools/kotlin-build-tools-impl/src/main/kotlin/org/jetbrains/kotlin/buildtools/internal/KotlinLoggerMessageCollectorAdapter.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.buildtools.internal
+
+import org.jetbrains.kotlin.buildtools.api.KotlinLogger
+import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity
+import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSourceLocation
+import org.jetbrains.kotlin.cli.common.messages.MessageCollector
+import org.jetbrains.kotlin.cli.common.messages.MessageRenderer
+
+internal class KotlinLoggerMessageCollectorAdapter(private val kotlinLogger: KotlinLogger) : MessageCollector {
+    private val messageRenderer = MessageRenderer.GRADLE_STYLE
+
+    override fun clear() {}
+
+    override fun report(severity: CompilerMessageSeverity, message: String, location: CompilerMessageSourceLocation?) {
+        val renderedMessage = messageRenderer.render(severity, message, location) // TODO: move rendering to the KotlinLogger side
+        when (severity) {
+            CompilerMessageSeverity.EXCEPTION, CompilerMessageSeverity.ERROR -> kotlinLogger.error(renderedMessage)
+            CompilerMessageSeverity.STRONG_WARNING, CompilerMessageSeverity.WARNING -> kotlinLogger.warn(renderedMessage)
+            CompilerMessageSeverity.INFO -> kotlinLogger.info(renderedMessage)
+            CompilerMessageSeverity.OUTPUT, CompilerMessageSeverity.LOGGING -> kotlinLogger.debug(renderedMessage)
+        }
+    }
+
+    override fun hasErrors() = false
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/BuildToolsApiJvmCompilationIT.kt

@@ -20,7 +20,6 @@ class BuildToolsApiJvmCompilationIT : KGPBaseTest() {
     override val defaultBuildOptions = super.defaultBuildOptions.copy(runViaBuildToolsApi = true)
 
     @GradleTest
-    @Disabled
     @DisplayName("Simple project non-incremental in-process compilation")
     fun compileJvmInProcessNonIncremental(gradleVersion: GradleVersion) = testSimpleProject(
         gradleVersion, defaultBuildOptions.copy(

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/compilerRunner/btapi/BuildToolsApiCompilationWork.kt

@@ -13,12 +13,18 @@ import org.gradle.workers.WorkParameters
 import org.jetbrains.kotlin.build.report.metrics.BuildMetricsReporter
 import org.jetbrains.kotlin.build.report.metrics.GradleBuildPerformanceMetric
 import org.jetbrains.kotlin.build.report.metrics.GradleBuildTime
-import org.jetbrains.kotlin.buildtools.api.CompilationService
+import org.jetbrains.kotlin.buildtools.api.*
-import org.jetbrains.kotlin.buildtools.api.ExperimentalBuildToolsApi
+import org.jetbrains.kotlin.cli.common.ExitCode
-import org.jetbrains.kotlin.buildtools.api.SharedApiClassesClassLoader
 import org.jetbrains.kotlin.compilerRunner.GradleKotlinCompilerWorkArguments
+import org.jetbrains.kotlin.compilerRunner.asFinishLogMessage
 import org.jetbrains.kotlin.gradle.internal.ClassLoadersCachingBuildService
 import org.jetbrains.kotlin.gradle.internal.ParentClassLoaderProvider
+import org.jetbrains.kotlin.gradle.logging.GradleKotlinLogger
+import org.jetbrains.kotlin.gradle.logging.SL4JKotlinLogger
+import org.jetbrains.kotlin.gradle.plugin.internal.state.TaskLoggers
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompilerExecutionStrategy
+import org.jetbrains.kotlin.gradle.tasks.throwExceptionIfCompilationFailed
+import org.slf4j.LoggerFactory
 import java.io.File
 
 @OptIn(ExperimentalBuildToolsApi::class)
@@ -35,21 +41,57 @@ internal abstract class BuildToolsApiCompilationWork : WorkAction<BuildToolsApiC
     private val workArguments
         get() = parameters.compilerWorkArguments.get()
 
-    override fun execute() {
+    private val taskPath
-        val classLoader = parameters.classLoadersCachingService.get()
+        get() = workArguments.taskPath
-            .getClassLoader(workArguments.compilerFullClasspath, SharedApiClassesClassLoaderProvider)
+
-        val compilationService = CompilationService.loadImplementation(classLoader)
+    private val log: KotlinLogger by lazy(LazyThreadSafetyMode.NONE) {
-        val executionConfig = compilationService.makeCompilerExecutionStrategyConfiguration().apply {
+        TaskLoggers.get(taskPath)?.let { GradleKotlinLogger(it).apply { debug("Using '$taskPath' logger") } }
-            useInProcessStrategy()
+            ?: run {
-        }
+                val logger = LoggerFactory.getLogger("GradleKotlinCompilerWork")
-        val jvmCompilationConfig = compilationService.makeJvmCompilationConfiguration()
+                val kotlinLogger = if (logger is org.gradle.api.logging.Logger) {
-        compilationService.compileJvm(
+                    GradleKotlinLogger(logger)
-            executionConfig,
+                } else SL4JKotlinLogger(logger)
-            jvmCompilationConfig,
+
-            emptyList(),
+                kotlinLogger.apply {
-            emptyList(),
+                    debug("Could not get logger for '$taskPath'. Falling back to sl4j logger")
-        )
+                }
+            }
     }
+
+    override fun execute() {
+        val executionStrategy = workArguments.compilerExecutionSettings.strategy
+        try {
+            val classLoader = parameters.classLoadersCachingService.get()
+                .getClassLoader(workArguments.compilerFullClasspath, SharedApiClassesClassLoaderProvider)
+            val compilationService = CompilationService.loadImplementation(classLoader)
+            val executionConfig = compilationService.makeCompilerExecutionStrategyConfiguration().apply {
+                when (executionStrategy) {
+                    KotlinCompilerExecutionStrategy.DAEMON -> TODO("The daemon strategy is not yet supported in the Build Tools API")
+                    KotlinCompilerExecutionStrategy.IN_PROCESS -> useInProcessStrategy()
+                    else -> error("The \"$executionStrategy\" execution strategy is not supported by the Build Tools API")
+                }
+            }
+            val jvmCompilationConfig = compilationService.makeJvmCompilationConfiguration()
+            val result = compilationService.compileJvm(
+                executionConfig,
+                jvmCompilationConfig,
+                emptyList(),
+                workArguments.compilerArgs.toList(),
+            )
+            throwExceptionIfCompilationFailed(result.asExitCode, executionStrategy)
+        } finally {
+            log.info(executionStrategy.asFinishLogMessage)
+        }
+    }
+
+    // temporary adapter property
+    private val CompilationResult.asExitCode
+        get() = when (this) {
+            CompilationResult.COMPILATION_ERROR -> ExitCode.COMPILATION_ERROR
+            CompilationResult.COMPILER_INTERNAL_ERROR -> ExitCode.INTERNAL_ERROR
+            CompilationResult.COMPILATION_OOM_ERROR -> ExitCode.OOM_ERROR
+            else -> ExitCode.OK
+        }
 }
 
 @OptIn(ExperimentalBuildToolsApi::class)

repo/artifacts-tests/src/test/resources/org/jetbrains/kotlin/kotlin-build-tools-impl/kotlin-build-tools-impl.pom

@@ -38,5 +38,11 @@
       <version>ArtifactsTest.version</version>
       <scope>runtime</scope>
     </dependency>
+    <dependency>
+      <groupId>org.jetbrains.kotlin</groupId>
+      <artifactId>kotlin-compiler-embeddable</artifactId>
+      <version>ArtifactsTest.version</version>
+      <scope>runtime</scope>
+    </dependency>
   </dependencies>
 </project>