[WIP] Proguard shrinking and code optimization

build.gradle.kts

@@ -9,6 +9,17 @@ plugins {
     id("com.github.gmazzo.buildconfig") version "3.0.3" apply false
 }
 
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+    dependencies {
+        classpath("com.guardsquare:proguard-gradle:7.2.1") {
+            exclude("com.android.tools.build")
+        }
+    }
+}
+
 allprojects {
     group = "suwayomi"
 
@@ -112,4 +123,5 @@ configure(projects) {
         // dependency both in AndroidCompat and server, version locked by javalin
         implementation("com.fasterxml.jackson.core:jackson-annotations:2.12.4")
     }
-}
+}
+

server/build.gradle.kts

@@ -1,4 +1,5 @@
 import de.undercouch.gradle.tasks.download.Download
+import proguard.gradle.ProGuardTask
 import java.time.Instant
 
 plugins {
@@ -175,4 +176,25 @@ tasks {
             )
         }
     }
+
+    register<ProGuardTask>("optimizeShadowJar") {
+        group = "shadow"
+        val shadowJar = getByName("shadowJar")
+        dependsOn(shadowJar)
+        val shadowJars = shadowJar.outputs.files.onEach { println(it.absolutePath) }
+        injars(shadowJars)
+        outjars(
+            shadowJars.map { file ->
+                File(file.parentFile, "min/" + file.name)
+            }
+        )
+        val javaHome = System.getProperty("java.home")
+        if (JavaVersion.current().isJava9Compatible) {
+            libraryjars("$javaHome/jmods")
+        } else {
+            libraryjars("$javaHome/lib/rt.jar")
+            //libraryjars("$javaHome/lib/jce.jar")
+        }
+        configuration("proguard-rules.pro")
+    }
 }

server/proguard-rules.pro

@@ -0,0 +1,138 @@
+-dontobfuscate
+-keepattributes Signature,LineNumberTable
+
+-keep,allowoptimization class eu.kanade.tachiyomi.** { public protected *; }
+-keep,allowoptimization class suwayomi.tachidesk.** { public protected *; }
+-keep class suwayomi.tachidesk.manga.model.dataclass.* { *; }
+-keep class suwayomi.tachidesk.MainKt {
+    public static void main(java.lang.String[]);
+}
+-keepdirectories suwayomi/tachidesk/**
+-keepdirectories META-INF/**
+
+
+# java.lang.ClassCastException: class javax.servlet.SessionTrackingMode not an enum
+-keepclassmembers class * extends java.lang.Enum {
+    <fields>;
+    public static **[] values();
+    public static ** valueOf(java.lang.String);
+}
+
+# Jackston
+#-keep class kotlin.Metadata { *; }
+#-keep class kotlin.reflect.** { *; }
+
+
+# Kotlin Serialization
+-keepattributes *Annotation*, InnerClasses
+-dontnote kotlinx.serialization.AnnotationsKt # core serialization annotations
+
+# kotlinx-serialization-json specific. Add this if you have java.lang.NoClassDefFoundError kotlinx.serialization.json.JsonObjectSerializer
+-keepclassmembers class kotlinx.serialization.json.** {
+    *** Companion;
+}
+-keepclasseswithmembers class kotlinx.serialization.json.** {
+    kotlinx.serialization.KSerializer serializer(...);
+}
+
+-keep,includedescriptorclasses class eu.kanade.tachiyomi.**$$serializer { *; }
+-keepclassmembers class eu.kanade.tachiyomi.** {
+    *** Companion;
+}
+-keepclasseswithmembers class eu.kanade.tachiyomi.** {
+    kotlinx.serialization.KSerializer serializer(...);
+}
+
+-keep,includedescriptorclasses class suwayomi.tachidesk.**$$serializer { *; }
+-keepclassmembers class suwayomi.tachidesk.** {
+    *** Companion;
+}
+-keepclasseswithmembers class suwayomi.tachidesk.** {
+    kotlinx.serialization.KSerializer serializer(...);
+}
+
+# Keep extension's common dependencies
+-keep,allowoptimization class eu.kanade.tachiyomi.** { public protected *; }
+-keep,allowoptimization class androidx.preference.** { *; }
+-keep,allowoptimization class kotlin.** { public protected *; }
+-keep,allowoptimization class kotlinx.coroutines.** { public protected *; }
+-keep,allowoptimization class okhttp3.** { public protected *; }
+-keep,allowoptimization class okio.** { public protected *; }
+-keep,allowoptimization class rx.** { public protected *; }
+-keep,allowoptimization class org.jsoup.** { public protected *; }
+-keep,allowoptimization class com.google.gson.** { public protected *; }
+-keep,allowoptimization class com.github.salomonbrys.kotson.** { public protected *; }
+-keep,allowoptimization class com.squareup.duktape.** { public protected *; }
+-keep,allowoptimization class app.cash.quickjs.** { public protected *; }
+-keep,allowoptimization class uy.kohesive.injekt.** { public protected *; }
+-keep,allowoptimization class kotlinx.serialization.** { public protected *; }
+
+# Coroutines
+-dontwarn kotlinx.coroutines.**
+
+# OKHTTP
+-dontwarn org.codehaus.mojo.animal_sniffer.*
+-dontwarn okhttp3.internal.platform.**
+
+# Exposted
+-keep class org.jetbrains.exposed.** { *; }
+-keep class de.neonew.exposed.migrations.** { *; }
+
+# H2
+-keep class org.h2.Driver { *; }
+
+# Javalin
+-keep class org.eclipse.jetty.** { *; }
+-dontwarn io.javalin.http.LeveledBrotliStream
+-dontwarn io.javalin.plugin.metrics.**
+-dontwarn io.javalin.plugin.rendering.**
+-dontwarn com.nixxcode.jvmbrotli.common.BrotliLoader
+-dontwarn com.nixxcode.jvmbrotli.enc.BrotliOutputStream
+
+# Xml
+-keep class org.apache.xerces.** { *; }
+-dontwarn javax.xml.**
+-dontwarn com.sun.xml.**
+-dontwarn com.sun.org.apache.**
+-dontwarn jdk.xml.internal.ErrorHandlerProxy
+-dontwarn com.sun.beans.decoder.DocumentHandler
+-dontwarn org.apache.xerces.**
+
+# org.json
+-dontwarn org.json.XMLTokener
+-dontwarn org.json.JSONWriter
+
+# Android
+-dontwarn com.android.**
+-dontwarn android.**
+-dontwarn androidx.annotation.*
+
+# Logback
+-keep class ch.qos.logback.** { *; }
+-dontwarn ch.qos.logback.**
+-dontwarn org.apache.commons.logging.**
+-dontwarn org.slf4j.MDC
+-dontwarn org.slf4j.MarkerFactory
+
+# Dorkbox
+-keep class dorkbox.systemTray.ui.** {
+    public <init>(...);
+}
+-keep class dorkbox.jna.** { *; }
+-dontwarn dorkbox.**
+
+# Java
+-dontwarn javax.imageio.**
+-dontwarn javax.swing.**
+-dontwarn java.util.prefs.**
+
+# Joda time
+-dontwarn org.joda.convert.*
+
+# Other
+-keep class com.sun.jna.** { *; }
+-dontwarn com.sun.rowset.**
+-dontwarn com.reprezen.jsonoverlay.gen.**
+-dontwarn org.h2.**
+-dontwarn org.eclipse.jetty.**
+-dontwarn org.antlr.runtime.tree.DOTTreeGenerator