Add limitation for changed files list for JPS build report

#KT-63549

compiler/build-tools/kotlin-build-statistics/src/org/jetbrains/kotlin/build/report/reportSettings.kt

@@ -10,10 +10,11 @@ import java.io.Serializable
 
 data class FileReportSettings(
     val buildReportDir: File,
+    val changedFileListPerLimit: Int? = null,
     val includeMetricsInReport: Boolean = false,
 ) : Serializable {
     companion object {
-        const val serialVersionUID: Long = 0
+        const val serialVersionUID: Long = 1
     }
 }
 

jps/jps-plugin/src/org/jetbrains/kotlin/jps/statistic/JpsFileReportService.kt

@@ -11,15 +11,20 @@ import org.jetbrains.kotlin.build.report.statistics.CompileStatisticsData
 import org.jetbrains.kotlin.build.report.statistics.file.FileReportService
 import org.jetbrains.kotlin.compilerRunner.JpsKotlinLogger
 import java.io.File
+import kotlin.math.min
 
 internal class JpsFileReportService(
     buildReportDir: File,
     projectName: String,
     printMetrics: Boolean,
     logger: JpsKotlinLogger,
+    private val changedFileListPerLimit: Int?
 ) : FileReportService<JpsBuildTime, JpsBuildPerformanceMetric>(buildReportDir, projectName, printMetrics, logger) {
     override fun printCustomTaskMetrics(statisticsData: CompileStatisticsData<JpsBuildTime, JpsBuildPerformanceMetric>) {
-        p.print("Changed files: ${statisticsData.getChanges().sorted()}")
-        p.print("Execution result: ${statisticsData.getTaskResult()}")
+        val changedFiles = statisticsData.getChanges().let { changes ->
+            changedFileListPerLimit?.let { changes.subList(0, min(it, changes.size)) } ?: changes
+        }
+        p.println("Changed files: ${changedFiles.sorted()}")
+        p.println("Execution result: ${statisticsData.getTaskResult()}")
     }
 }

jps/jps-plugin/src/org/jetbrains/kotlin/jps/statistic/JpsStatisticsReportService.kt

@@ -17,7 +17,6 @@ import org.jetbrains.kotlin.build.report.metrics.*
 import org.jetbrains.kotlin.build.report.statistics.*
 import org.jetbrains.kotlin.compilerRunner.JpsKotlinLogger
 import org.jetbrains.kotlin.jps.build.KotlinChunk
-import org.jetbrains.kotlin.jps.build.KotlinCompileContext
 import org.jetbrains.kotlin.jps.build.KotlinDirtySourceFilesHolder
 import java.io.File
 import java.util.concurrent.ConcurrentHashMap
@@ -30,6 +29,8 @@ internal val statisticsReportServiceKey = GlobalContextKey<JpsStatisticsReportSe
 
 sealed class JpsStatisticsReportService {
     companion object {
+        private const val DEFAULT_CHANGED_FILE_LIST_LIMIT = 20
+
         internal fun create(): JpsStatisticsReportService {
             val fileReportSettings = initFileReportSettings()
             val httpReportSettings = initHttpReportSettings()
@@ -45,7 +46,9 @@ sealed class JpsStatisticsReportService {
             context.getUserData(statisticsReportServiceKey) ?: DummyJpsStatisticsReportService
 
         private fun initFileReportSettings(): FileReportSettings? {
-            return System.getProperty("kotlin.build.report.file.output_dir")?.let { FileReportSettings(File(it)) }
+            return System.getProperty("kotlin.build.report.file.output_dir")?.let {
+                FileReportSettings(File(it), System.getProperty("kotlin.build.report.file.change_file_limit")?.toInt() ?: DEFAULT_CHANGED_FILE_LIST_LIMIT)
+            }
         }
 
         private fun initHttpReportSettings(): HttpReportSettings? {
@@ -140,7 +143,7 @@ class JpsStatisticsReportServiceImpl(
         httpService?.sendData(compileStatisticsData, loggerAdapter)
         fileReportSettings?.also {
             JpsFileReportService(
-                it.buildReportDir, context.projectDescriptor.project.name, true, loggerAdapter
+                it.buildReportDir, context.projectDescriptor.project.name, true, loggerAdapter, it.changedFileListPerLimit
             ).process(
                 compileStatisticsData,
                 BuildStartParameters(tasks = listOf(jpsBuildTaskName)), emptyList(),

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/report/configureReporing.kt

@@ -42,7 +42,10 @@ internal fun reportingSettings(project: Project): ReportingSettings {
             project.rootProject.buildDir
         }).resolve("reports/kotlin-build")
         val includeMetricsInReport = properties.buildReportMetrics || buildReportMode == BuildReportMode.VERBOSE
-        FileReportSettings(buildReportDir = buildReportDir, includeMetricsInReport = includeMetricsInReport)
+        FileReportSettings(
+            buildReportDir = buildReportDir,
+            includeMetricsInReport = includeMetricsInReport
+        )
     } else {
         null
     }