perf: compress synthetic-project.json to save disk space.

Partial resolution of #1604.

Author: autonomousapps

src/main/kotlin/com/autonomousapps/internal/utils/moshi.kt

@@ -172,10 +172,21 @@ public inline fun <reified T> File.bufferWriteJsonSet(
  * By default, the output is compacted.
  *
  * @param obj The object to write to file
+ * @param compress Whether to compress output with gzip.
  * @param indent The indent to control how the result is formatted
  */
-public inline fun <reified T> File.bufferWriteJson(obj: T, indent: String = noJsonIndent) {
-  JsonWriter.of(sink().buffer()).use { writer ->
+public inline fun <reified T> File.bufferWriteJson(
+  obj: T,
+  compress: Boolean = false,
+  indent: String = noJsonIndent,
+) {
+  val buffer = if (compress) {
+    GzipSink(sink()).buffer()
+  } else {
+    sink().buffer()
+  }
+
+  JsonWriter.of(buffer).use { writer ->
     getJsonAdapter<T>().indent(indent).toJson(writer, obj)
   }
 }

src/main/kotlin/com/autonomousapps/internal/utils/utils.kt

@@ -65,13 +65,7 @@ internal inline fun <reified T> RegularFile.fromJsonSet(
 internal inline fun <reified T> File.fromJsonSet(
   compressed: Boolean = false,
 ): Set<T> {
-  val source = if (compressed) {
-    GzipSource(source()).buffer()
-  } else {
-    bufferRead()
-  }
-
-  return source.use { getJsonSetAdapter<T>().fromJson(it)!! }
+  return bufferRead(compressed).use { getJsonSetAdapter<T>().fromJson(it)!! }
 }
 
 /** Buffers reads of the RegularFileProperty from disk to the set. */
@@ -122,14 +116,20 @@ internal inline fun <reified K, reified V> File.fromJsonMap(): Map<K, V> {
 }
 
 /** Buffer reads of the RegularFileProperty from disk to the set. */
-internal inline fun <reified T> RegularFileProperty.fromJson(): T = get().fromJson()
+internal inline fun <reified T> RegularFileProperty.fromJson(
+  compressed: Boolean = false,
+): T = get().fromJson(compressed)
 
 /** Buffer reads of the RegularFile from disk to the set. */
-internal inline fun <reified T> RegularFile.fromJson(): T = asFile.fromJson()
+internal inline fun <reified T> RegularFile.fromJson(
+  compressed: Boolean = false,
+): T = asFile.fromJson(compressed)
 
 /** Buffer reads of the File from disk to the set. */
-internal inline fun <reified T> File.fromJson(): T {
-  return bufferRead().use { reader ->
+internal inline fun <reified T> File.fromJson(
+  compressed: Boolean = false,
+): T {
+  return bufferRead(compressed).use { reader ->
     getJsonAdapter<T>().fromJson(reader)!!
   }
 }
@@ -140,7 +140,15 @@ internal fun RegularFile.readLines(): List<String> = asFile.readLines()
 
 internal fun RegularFileProperty.readText(): String = get().asFile.readText()
 
-private fun File.bufferRead(): BufferedSource = source().buffer()
+private fun File.bufferRead(
+  compressed: Boolean = false,
+): BufferedSource {
+  return if (compressed) {
+    GzipSource(source()).buffer()
+  } else {
+    source().buffer()
+  }
+}
 
 internal fun String.capitalizeSafely(): String {
   return replaceFirstChar(Char::uppercase)

src/main/kotlin/com/autonomousapps/tasks/AndroidScoreTask.kt

@@ -53,7 +53,7 @@ public abstract class AndroidScoreTask @Inject constructor(
 
   public abstract class Action : WorkAction<Parameters> {
 
-    private val project = parameters.syntheticProject.fromJson<ProjectVariant>()
+    private val project = parameters.syntheticProject.fromJson<ProjectVariant>(compressed = true)
     private val dependencies = project.dependencies(parameters.dependencies.get())
 
     override fun execute() {

src/main/kotlin/com/autonomousapps/tasks/ComputeTypeUsageTask.kt

@@ -92,7 +92,7 @@ public abstract class ComputeTypeUsageTask @Inject constructor(
       val output = parameters.output.getAndDelete()
 
       // 1. Load data
-      val project = parameters.syntheticProject.fromJson<ProjectVariant>()
+      val project = parameters.syntheticProject.fromJson<ProjectVariant>(compressed = true)
       val dependencies = project.dependencies(parameters.dependencies.get())
       val classToCoords = buildClassIndex()
 

src/main/kotlin/com/autonomousapps/tasks/ComputeUsagesTask.kt

@@ -119,7 +119,7 @@ public abstract class ComputeUsagesTask @Inject constructor(
     private val graph = parameters.graph.fromJson<DependencyGraphView>()
     private val graphRuntime = parameters.graphRuntime.fromJson<DependencyGraphView>()
     private val declarations = parameters.declarations.fromJsonSet<Declaration>()
-    private val project = parameters.syntheticProject.fromJson<ProjectVariant>()
+    private val project = parameters.syntheticProject.fromJson<ProjectVariant>(compressed = true)
     private val dependencies = project.dependencies(parameters.dependencies.get())
     private val duplicateClasses =
       parameters.duplicateClassesReports.get().asSequence()

src/main/kotlin/com/autonomousapps/tasks/DiscoverClasspathDuplicationTask.kt

@@ -53,7 +53,7 @@ public abstract class DiscoverClasspathDuplicationTask : DefaultTask() {
   @TaskAction public fun action() {
     val output = output.getAndDelete()
 
-    val project = syntheticProject.fromJson<ProjectVariant>()
+    val project = syntheticProject.fromJson<ProjectVariant>(compressed = true)
     val duplicates = ClasspathAnalyzer(project, classpathName.get(), classpath).duplicates()
 
     output.writeText(duplicates.toJson())

src/main/kotlin/com/autonomousapps/tasks/SynthesizeProjectViewTask.kt

@@ -264,7 +264,7 @@ public abstract class SynthesizeProjectViewTask @Inject constructor(
         excludedIdentifiers = excludedIdentifiers,
       )
 
-      output.bufferWriteJson(projectVariant)
+      output.bufferWriteJson(projectVariant, compress = true)
     }
 
     private fun CodeSource.excludeUsages(usagesExclusions: UsagesExclusions): CodeSource {