ISSUE-169: fix gradle demo (#177)

demo_gradle/README.md

@@ -0,0 +1,62 @@
+# PF4J Gradle Demo
+
+This demo assumes that you know the basics of Gradle (Please look at [gradle](https://gradle.org/) for more info)
+
+### Setup/Build
+
+1. Clone the repo
+2. Go to demo_gradle `cd demo_gradle` 
+3. run `gradle build`
+
+* This will produce one jar, named app-plugin-demo-uberjar.jar, located in the `app/build/libs/` directory and three plugins zips located in `build/plugins` directory.
+* The plugins are `plugin-hello-plugin-0.0.1.zip`,  `plugin-KotlinPlugin-1.0.0.zip` and `plugin-welcome-plugin-0.0.1.zip`
+
+### Run the demo
+
+1. Run 
+
+```
+ java -jar -Dpf4j.pluginsDir=build/plugins app/build/libs/app-plugin-demo-uberjar.jar 
+```
+
+* pf4j.pluginsDir: is where the plugins are located
+
+2. The demo's output should look similar to: (Please see `Boot#main()` for more details)
+```
+demo_gradle $ java -jar -Dpf4j.pluginsDir=build/plugins app/build/libs/app-plugin-demo-uberjar.jar 
+[main] INFO org.pf4j.demo.Boot - ########################################
+[main] INFO org.pf4j.demo.Boot -                PF4J-DEMO                
+[main] INFO org.pf4j.demo.Boot - ########################################
+[main] INFO org.pf4j.DefaultPluginStatusProvider - Enabled plugins: []
+[main] INFO org.pf4j.DefaultPluginStatusProvider - Disabled plugins: []
+[main] INFO org.pf4j.DefaultPluginManager - PF4J version 0.0.0 in 'deployment' mode
+[main] INFO org.pf4j.AbstractPluginManager - Plugin 'welcome-plugin@0.0.1' resolved
+[main] INFO org.pf4j.AbstractPluginManager - Plugin 'KotlinPlugin@1.0.0' resolved
+[main] INFO org.pf4j.AbstractPluginManager - Plugin 'hello-plugin@0.0.1' resolved
+[main] INFO org.pf4j.AbstractPluginManager - Start plugin 'welcome-plugin@0.0.1'
+[main] INFO org.pf4j.demo.welcome.WelcomePlugin - WelcomePlugin.start()
+[main] INFO org.pf4j.demo.welcome.WelcomePlugin - WELCOMEPLUGIN
+[main] INFO org.pf4j.AbstractPluginManager - Start plugin 'KotlinPlugin@1.0.0'
+[main] INFO org.pf4j.demo.kotlin.KotlinPlugin - KotlinPlugin.start()
+[main] INFO org.pf4j.demo.kotlin.KotlinPlugin - KOTLINPLUGIN
+[main] INFO org.pf4j.AbstractPluginManager - Start plugin 'hello-plugin@0.0.1'
+[main] INFO org.pf4j.demo.hello.HelloPlugin - HelloPlugin.start()
+[main] INFO org.pf4j.demo.Boot - Plugindirectory: 
+[main] INFO org.pf4j.demo.Boot - 	build/plugins
+
+[main] INFO org.pf4j.demo.Boot - Found 3 extensions for extension point 'org.pf4j.demo.api.Greeting'
+[main] INFO org.pf4j.demo.Boot - >>> Whazzup
+[main] INFO org.pf4j.demo.Boot - >>> Welcome
+[main] INFO org.pf4j.demo.Boot - >>> Hello
+[main] INFO org.pf4j.demo.Boot - Extensions added by plugin 'welcome-plugin':
+[main] INFO org.pf4j.demo.Boot - Extensions added by plugin 'KotlinPlugin':
+[main] INFO org.pf4j.demo.Boot - Extensions added by plugin 'hello-plugin':
+[main] INFO org.pf4j.AbstractPluginManager - Stop plugin 'hello-plugin@0.0.1'
+[main] INFO org.pf4j.demo.hello.HelloPlugin - HelloPlugin.stop()
+[main] INFO org.pf4j.AbstractPluginManager - Stop plugin 'KotlinPlugin@1.0.0'
+[main] INFO org.pf4j.demo.kotlin.KotlinPlugin - KotlinPlugin.stop()
+[main] INFO org.pf4j.AbstractPluginManager - Stop plugin 'welcome-plugin@0.0.1'
+[main] INFO org.pf4j.demo.welcome.WelcomePlugin - WelcomePlugin.stop()
+
+```
+

demo_gradle/api/build.gradle

@@ -1,5 +1,6 @@
 dependencies {
-    compile 'org.pf4j:pf4j:2.0.0-SNAPSHOT'
-    compile 'org.apache.commons:commons-lang3:3.0'
+    compile group: 'org.pf4j', name: 'pf4j', version: "${pf4jVersion}"
+    compile group: 'org.apache.commons', name: 'commons-lang3', version: '3.5'
+
     testCompile group: 'junit', name: 'junit', version: '4.+'
 }

demo_gradle/app/build.gradle

@@ -4,13 +4,28 @@ mainClassName = 'org.pf4j.demo.Boot'
 
 dependencies {
   compile project(':api')
-    compile 'org.pf4j:pf4j:2.0.0-SNAPSHOT'
-    compile 'org.apache.commons:commons-lang3:3.5'
-    testCompile group: 'junit', name: 'junit', version: '4.+'
+  compile group: 'org.pf4j', name: 'pf4j', version: "${pf4jVersion}"
+  compile group: 'org.apache.commons', name: 'commons-lang3', version: '3.5'
   compile group: 'org.slf4j', name: 'slf4j-simple', version: '1.7.25'
+
+  testCompile group: 'junit', name: 'junit', version: '4.+'
 }
 
-jar {
-    baseName = 'Plugin Demo'
-    version = '0.1.0'
+task uberjar(type: Jar, dependsOn: ['compileJava']) {
+  zip64 true
+  from configurations.runtime.asFileTree.files.collect {
+    exclude "META-INF/*.SF"
+    exclude "META-INF/*.DSA"
+    exclude "META-INF/*.RSA"
+    zipTree(it)
+  }
+  from files(sourceSets.main.output.classesDir)
+  from files(sourceSets.main.resources)
+  manifest {
+    attributes 'Main-Class': mainClassName
   }
+
+  baseName = "${project.name}-plugin-demo"
+  classifier = "uberjar"
+}
+

demo_gradle/app/src/main/java/org/pf4j/demo/Boot.java

@@ -16,6 +16,9 @@
 package org.pf4j.demo;
 
 import org.apache.commons.lang3.StringUtils;
+import org.pf4j.CompoundPluginDescriptorFinder;
+import org.pf4j.ManifestPluginDescriptorFinder;
+import org.pf4j.PropertiesPluginDescriptorFinder;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.pf4j.DefaultPluginManager;
@@ -38,7 +41,16 @@ public class Boot {
         printLogo();
 
         // create the plugin manager
-        final PluginManager pluginManager = new DefaultPluginManager();
+        final PluginManager pluginManager = new DefaultPluginManager() {
+          @Override
+          protected CompoundPluginDescriptorFinder createPluginDescriptorFinder() {
+            return new CompoundPluginDescriptorFinder()
+                // Demo is using the Manifest file
+                // PropertiesPluginDescriptorFinder is commented out just to avoid error log
+                //.add(new PropertiesPluginDescriptorFinder())
+                .add(new ManifestPluginDescriptorFinder());
+          }
+        };
 
         // load the plugins
         pluginManager.loadPlugins();

demo_gradle/build.gradle

@@ -6,21 +6,9 @@ subprojects {
     mavenCentral()
   }
 }
+// plugin location
+ext.pluginsDir = rootProject.buildDir.path + '/plugins'
+
+task build(dependsOn: [':app:uberjar'])
 
-task copyPlugins() {
-    doLast {
-        delete 'app/plugins'
-        mkdir 'app/plugins'
 
-        subprojects.each { p ->
-            if (p.path.contains(":plugins/")) {
-                System.out.println("Copying plugin from " + p.path);
-                copy {
-                    from p.projectDir.toString() + '/build/libs'
-                    into 'app/plugins'
-                    include '*.zip'
-                }
-            }
-        }
-    }
-}

demo_gradle/gradle.properties

@@ -0,0 +1,2 @@
+# PF4J
+pf4jVersion=2.0.0

demo_gradle/plugins/build.gradle

@@ -0,0 +1,32 @@
+subprojects {
+  jar {
+    manifest {
+      attributes 'Plugin-Class': "${pluginClass}",
+          'Plugin-Id': "${pluginId}",
+          'Plugin-Version': "${version}",
+          'Plugin-Provider': "${pluginProvider}"
+    }
+  }
+
+  task plugin(type: Jar) {
+    baseName = "plugin-${pluginId}"
+    into('classes') {
+      with jar
+    }
+    into('lib') {
+      from configurations.compile
+    }
+    extension('zip')
+  }
+
+  task assemblePlugin(type: Copy) {
+    from plugin
+    into pluginsDir
+  }
+}
+
+task assemblePlugins(type: Copy) {
+  dependsOn subprojects.assemblePlugin
+}
+
+build.dependsOn project.tasks.assemblePlugins

demo_gradle/plugins/plugin1/build.gradle

@@ -1,33 +1,9 @@
-jar {
-    baseName = 'WelcomePlugin'
-    version = '0.1.0'
-    manifest {
-        attributes 'Plugin-Class': 'org.pf4j.demo.welcome.WelcomePlugin',
-            'Plugin-Id': 'WelcomePlugin',
-            'Plugin-Version': '1.0.0',
-            'Plugin-Provider': 'Decebal Suiu'
-    }
-}
-
-task plugin(type: Jar) {
-    baseName = 'WelcomePlugin'
-    version = '0.1.0'
-    into('classes') {
-        with jar
-    }
-    into('lib') {
-        from configurations.compile
-    }
-    extension('zip')
-}
-assemble.dependsOn plugin
-
 dependencies {
-    compileOnly project(':api')
   // compileOnly important!!! We do not want to put the api into the zip file since the main program has it already!
-    compile('org.pf4j:pf4j:2.0.0-SNAPSHOT') {
+  compileOnly project(':api')
+  compileOnly(group: 'org.pf4j', name: 'pf4j', version: "${pf4jVersion}") {
     exclude group: "org.slf4j"
   }
-    compile 'org.apache.commons:commons-lang3:3.5'
+  compile group: 'org.apache.commons', name: 'commons-lang3', version: '3.5'
   testCompile group: 'junit', name: 'junit', version: '4.+'
 }

demo_gradle/plugins/plugin1/gradle.properties

@@ -0,0 +1,6 @@
+version=0.0.1
+
+pluginId=welcome-plugin
+pluginClass=org.pf4j.demo.welcome.WelcomePlugin
+pluginProvider=Decebal Suiu
+pluginDependencies=

demo_gradle/plugins/plugin1/plugin.properties

@@ -1,5 +0,0 @@
-plugin.id=welcome-plugin
-plugin.class=org.pf4j.demo.welcome.WelcomePlugin
-plugin.version=0.0.1
-plugin.provider=Decebal Suiu
-plugin.dependencies=

demo_gradle/plugins/plugin2/build.gradle

@@ -1,33 +1,9 @@
-jar {
-    baseName = 'HelloPlugin'
-    version = '0.1.0'
-    manifest {
-        attributes 'Plugin-Class': 'org.pf4j.demo.hello.HelloPlugin',
-            'Plugin-Id': 'HelloPlugin',
-            'Plugin-Version': '1.0.0',
-            'Plugin-Provider': 'Decebal Suiu'
-    }
-}
-
-task plugin(type: Jar) {
-    baseName = 'HelloPlugin'
-    version = '0.1.0'
-    into('classes') {
-        with jar
-    }
-    into('lib') {
-        from configurations.compile
-    }
-    extension('zip')
-}
-assemble.dependsOn plugin
-
 dependencies {
-    compileOnly project(':api')
   // compileOnly important!!! We do not want to put the api into the zip file since the main program has it already!
-    compile('org.pf4j:pf4j:2.0.0-SNAPSHOT') {
+  compileOnly project(':api')
+  compileOnly(group: 'org.pf4j', name: 'pf4j', version: "${pf4jVersion}") {
     exclude group: "org.slf4j"
   }
-    compile 'org.apache.commons:commons-lang3:3.5'
+  compile group: 'org.apache.commons', name: 'commons-lang3', version: '3.5'
   testCompile group: 'junit', name: 'junit', version: '4.+'
 }

demo_gradle/plugins/plugin2/gradle.properties

@@ -0,0 +1,6 @@
+version=0.0.1
+
+pluginId=hello-plugin
+pluginClass=org.pf4j.demo.hello.HelloPlugin
+pluginProvider=Decebal Suiu
+pluginDependencies=

demo_gradle/plugins/plugin2/plugin.properties

@@ -1,5 +0,0 @@
-plugin.id=hello-plugin
-plugin.class=org.pf4j.demo.hello.HelloPlugin
-plugin.version=0.0.1
-plugin.provider=Decebal Suiu
-plugin.dependencies=

demo_gradle/plugins/plugin3/build.gradle

@@ -9,30 +9,6 @@ buildscript {
   }
 }
 
-jar {
-    baseName = 'KotlinPlugin'
-    version = '0.1.0'
-    manifest {
-        attributes 'Plugin-Class': 'org.pf4j.demo.kotlin.KotlinPlugin',
-            'Plugin-Id': 'KotlinPlugin',
-            'Plugin-Version': '1.0.0',
-            'Plugin-Provider': 'Anindya Chatterjee'
-    }
-}
-
-task plugin(type: Jar) {
-    baseName = 'KotlinPlugin'
-    version = '0.1.0'
-    into('classes') {
-        with jar
-    }
-    into('lib') {
-        from configurations.compile
-    }
-    extension('zip')
-}
-assemble.dependsOn plugin
-
 apply plugin: 'kotlin'
 apply plugin: 'kotlin-kapt'
 
@@ -42,10 +18,11 @@ repositories {
 
 dependencies {
   compileOnly project(':api')
-    kapt('org.pf4j:pf4j:2.0.0-SNAPSHOT') {
+  compileOnly(group: 'org.pf4j', name: 'pf4j', version: "${pf4jVersion}") {
     exclude group: "org.slf4j"
   }
-    compile 'org.apache.commons:commons-lang3:3.5'
-    testCompile group: 'junit', name: 'junit', version: '4.+'
+  compile group: 'org.apache.commons', name: 'commons-lang3', version: '3.5'
   compile "org.jetbrains.kotlin:kotlin-stdlib-jre8:$kotlin_version"
+
+  testCompile group: 'junit', name: 'junit', version: '4.+'
 }

demo_gradle/plugins/plugin3/gradle.properties

@@ -0,0 +1,6 @@
+version=1.0.0
+
+pluginId=KotlinPlugin
+pluginClass=org.pf4j.demo.kotlin.KotlinPlugin
+pluginProvider=Anindya Chatterjee
+pluginDependencies=

demo_gradle/settings.gradle

@@ -1,5 +1,8 @@
 include 'api'
 include 'app'
-include 'plugins/plugin1'
-include 'plugins/plugin2'
-include 'plugins/plugin3'
+
+include 'plugins'
+
+include 'plugins:plugin1'
+include 'plugins:plugin2'
+include 'plugins:plugin3'