Package and publish wire-compiler and proto-pruner as fat jars

- Introduces shadow plugin [https://github.com/johnrengelman/shadow]
- Bump gradle-maven-publish-plugin to 0.6.0
- Downgrades Gradle plugin to 4.10.2
  gradle-plugins-maven-plugin-builder is incompatible with Gradle 5.0
  due to a breaking api change removing SourceSetOutput#getClassesDir().
  As a result, uploadArchives is broken.
- Stops publishing tar and zip artifacts; introduced by the
  distribution plugin during the Maven to Gradle conversion.

.gitignore

@@ -12,3 +12,6 @@ out/
 # Gradle
 .gradle
 build
+
+# Maven
+plugin*.xml

build.gradle

@@ -19,10 +19,14 @@ buildscript {
       'maven': '3.5.0',
       'mavenAnnotations': '3.5',
       'mavenPluginBuilder': '1.2.1',
-      'mavenPublish': '0.4.0',
+      'mavenPublish': '0.6.0',
   ]
 
   ext.deps = [
+      plugins: [
+          kotlin: "org.jetbrains.kotlin:kotlin-gradle-plugin:${versions.kotlin}",
+          shadow: 'com.github.jengelman.gradle.plugins:shadow:4.0.3'
+      ],    
       'android': "com.google.android:android:${versions.android}",
       'guava': "com.google.guava:guava:${versions.guava}",
       'okio': "com.squareup.okio:okio:${versions.okio}",
@@ -35,7 +39,6 @@ buildscript {
           'annotations': "com.google.auto.value:auto-value-annotations:${versions.autovalue}"
       ],
       'kotlin': [
-          'gradle': "org.jetbrains.kotlin:kotlin-gradle-plugin:${versions.kotlin}",
           'stdlib': [
               'jdk6': "org.jetbrains.kotlin:kotlin-stdlib",
               'jdk8': "org.jetbrains.kotlin:kotlin-stdlib-jdk8",
@@ -64,7 +67,8 @@ buildscript {
   ]
 
   dependencies {
-    classpath deps.kotlin.gradle
+    classpath deps.plugins.kotlin
+    classpath deps.plugins.shadow
     classpath deps.animalSniffer.gradle
     classpath deps.maven.plugin.builder
     classpath deps.maven.plugin.publish
@@ -85,7 +89,17 @@ allprojects {
   }
 }
 
-subprojects {
+subprojects { project ->
+  // The `application` plugin internally applies the `distribution` plugin and
+  // automatically adds tasks to create/publish tar and zip artifacts.
+  // https://docs.gradle.org/current/userguide/application_plugin.html
+  // https://docs.gradle.org/current/userguide/distribution_plugin.html#sec:publishing_distributions_upload
+  plugins.withType(DistributionPlugin) {
+    distTar.enabled = false
+    distZip.enabled = false
+    configurations.archives.artifacts.removeAll { it.file =~ 'tar' || it.file =~ 'zip' }
+  }
+
   apply plugin: 'com.vanniktech.maven.publish'
   apply plugin: 'checkstyle'
 

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.0-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -28,7 +28,7 @@ APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m"'
+DEFAULT_JVM_OPTS=""
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"

gradlew.bat

@@ -14,7 +14,7 @@ set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
 @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS="-Xmx64m"
+set DEFAULT_JVM_OPTS=
 
 @rem Find java.exe
 if defined JAVA_HOME goto findJavaFromJavaHome

proto-pruner/build.gradle

@@ -1,5 +1,6 @@
 apply plugin: 'application'
 apply plugin: 'org.jetbrains.kotlin.jvm'
+apply plugin: 'com.github.johnrengelman.shadow'
 
 sourceCompatibility = JavaVersion.VERSION_1_8
 targetCompatibility = JavaVersion.VERSION_1_8
@@ -16,3 +17,19 @@ dependencies {
   implementation project(':wire-schema')
   implementation deps.kotlin.stdlib.jdk8
 }
+
+shadowJar {
+  classifier = 'jar-with-dependencies'
+}
+
+artifacts {
+  archives shadowJar
+}
+
+// The `shadow` plugin internally applies the `distribution` plugin and
+// automatically adds tasks to create respective tar and zip artifacts.
+// https://github.com/johnrengelman/shadow/issues/347#issuecomment-424726972
+// https://github.com/johnrengelman/shadow/commit/a824e4f6e4618785deb7f084c4a80ce1b78fc4fd
+shadowDistTar.enabled = false
+shadowDistZip.enabled = false
+configurations.archives.artifacts.removeAll { it.file =~ 'tar' || it.file =~ 'zip' }

wire-compiler/build.gradle

@@ -1,5 +1,6 @@
 apply plugin: 'application'
 apply plugin: 'org.jetbrains.kotlin.jvm'
+apply plugin: 'com.github.johnrengelman.shadow'
 
 sourceCompatibility = JavaVersion.VERSION_1_8
 targetCompatibility = JavaVersion.VERSION_1_8
@@ -27,3 +28,19 @@ dependencies {
   testImplementation deps.jimfs
   testImplementation deps.kotlin.test.junit
 }
+
+shadowJar {
+  classifier = 'jar-with-dependencies'
+}
+
+artifacts {
+  archives shadowJar
+}
+
+// The `shadow` plugin internally applies the `distribution` plugin and
+// automatically adds tasks to create respective tar and zip artifacts.
+// https://github.com/johnrengelman/shadow/issues/347#issuecomment-424726972
+// https://github.com/johnrengelman/shadow/commit/a824e4f6e4618785deb7f084c4a80ce1b78fc4fd
+shadowDistTar.enabled = false
+shadowDistZip.enabled = false
+configurations.archives.artifacts.removeAll { it.file =~ 'tar' || it.file =~ 'zip' }