add custom groovy plugin and its usage from local Maven storage

14-custom-groovy-plugin/build.gradle

@@ -0,0 +1,12 @@
+apply plugin: "groovy"
+apply plugin: "maven"
+
+archivesBaseName = "lines-count"
+version = "1.0"
+group "com.ysoft.training"
+
+dependencies {
+    compile localGroovy()
+    compile gradleApi()
+}
+

14-custom-groovy-plugin/src/main/groovy/com/ysoft/training/LineCountPlugin.groovy

@@ -0,0 +1,22 @@
+package com.ysoft.training
+
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+import org.gradle.api.Task
+
+/**
+ * Simple plugin for counting lines in build.gradle.
+ **/
+class LineCountPlugin implements Plugin<Project> {
+
+    void apply(Project project) {
+        Task countLineTask = project.tasks.add("countLines")
+        countLineTask.doLast {
+            def counter = 0
+            new File("build.gradle").eachLine { line -> 
+                counter += 1
+            }
+            println "Total lines: ${counter}"
+        }
+    }
+}

14-custom-groovy-plugin/src/main/resources/META-INF/gradle-plugins/lines-count.properties

@@ -0,0 +1 @@
+implementation-class=com.ysoft.training.LineCountPlugin