Minor: add more logging in KotlinBuilder

jps-plugin/src/org/jetbrains/kotlin/compilerRunner/KotlinCompilerRunner.kt

@@ -29,6 +29,7 @@ import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity.INFO
 import org.jetbrains.kotlin.cli.common.messages.MessageCollector
 import org.jetbrains.kotlin.cli.common.messages.MessageCollectorUtil
 import org.jetbrains.kotlin.config.CompilerSettings
+import org.jetbrains.kotlin.jps.build.KotlinBuilder
 import org.jetbrains.kotlin.load.kotlin.incremental.components.IncrementalCompilationComponents
 import org.jetbrains.kotlin.progress.CompilationCanceledStatus
 import org.jetbrains.kotlin.rmi.*
@@ -108,6 +109,7 @@ public object KotlinCompilerRunner {
 
             if (!tryCompileWithDaemon(compilerClassName, argsArray, environment, messageCollector, collector)) {
                 // otherwise fallback to in-process
+                KotlinBuilder.LOG.info("Compile in-process")
 
                 val stream = ByteArrayOutputStream()
                 val out = PrintStream(stream)
@@ -176,9 +178,12 @@ public object KotlinCompilerRunner {
 
         if (isDaemonEnabled()) {
 
+            KotlinBuilder.LOG.debug("Try to connect to daemon")
             val connection = getDaemonConnection(environment, messageCollector)
 
             if (connection?.daemon != null) {
+                KotlinBuilder.LOG.info("Connected to daemon")
+
                 val compilerOut = ByteArrayOutputStream()
                 val daemonOut = ByteArrayOutputStream()
 
@@ -199,6 +204,8 @@ public object KotlinCompilerRunner {
                 }
                 return true
             }
+
+            KotlinBuilder.LOG.info("Daemon not found")
         }
         return false
     }

jps-plugin/src/org/jetbrains/kotlin/jps/build/KotlinBuilder.kt

@@ -65,6 +65,7 @@ import org.jetbrains.kotlin.modules.TargetId
 import org.jetbrains.kotlin.progress.CompilationCanceledException
 import org.jetbrains.kotlin.progress.CompilationCanceledStatus
 import org.jetbrains.kotlin.resolve.jvm.JvmClassName
+import org.jetbrains.kotlin.rmi.isDaemonEnabled
 import org.jetbrains.kotlin.utils.LibraryUtils
 import org.jetbrains.kotlin.utils.PathUtil
 import org.jetbrains.kotlin.utils.keysToMap
@@ -91,6 +92,7 @@ public class KotlinBuilder : ModuleLevelBuilder(BuilderCategory.SOURCE_PROCESSOR
         LOG.debug("==========================================")
         LOG.info("is Kotlin incremental compilation enabled: ${IncrementalCompilation.isEnabled()}")
         LOG.info("is Kotlin experimental incremental compilation enabled: ${IncrementalCompilation.isExperimental()}")
+        LOG.info("is Kotlin compiler daemon enabled: ${isDaemonEnabled()}")
 
         val historyLabel = context.getBuilderParameter("history label")
         if (historyLabel != null) {
@@ -108,12 +110,17 @@ public class KotlinBuilder : ModuleLevelBuilder(BuilderCategory.SOURCE_PROCESSOR
         val messageCollector = MessageCollectorAdapter(context)
 
         try {
-            return doBuild(chunk, context, dirtyFilesHolder, messageCollector, outputConsumer)
+            val result = doBuild(chunk, context, dirtyFilesHolder, messageCollector, outputConsumer)
+            LOG.debug("Build result: " + result)
+            return result
         }
         catch (e: StopBuildException) {
+            LOG.debug("Caught exception: " + e)
             throw e
         }
         catch (e: Throwable) {
+            LOG.debug("Caught exception: " + e)
+
             messageCollector.report(
                     CompilerMessageSeverity.EXCEPTION,
                     OutputMessageUtil.renderException(e),