BAEL-773 - Ratpack with Groovy (#6985)

* BAEL-773 - Ratpack with Groovy

* BAEL-773 - Ratpack with Groovy - PR review changes

* BAEL-773 - Ratpack with Groovy - PR review changes

* Typo corrected

* SQLs capitalised

ratpack/build.gradle

@@ -14,6 +14,8 @@ if (!JavaVersion.current().java8Compatible) {
 
 apply plugin: "io.ratpack.ratpack-java"
 apply plugin: 'java'
+apply plugin: 'groovy'
+apply plugin: 'io.ratpack.ratpack-groovy'
 
 repositories {
   jcenter()

ratpack/pom.xml

@@ -26,11 +26,21 @@
             <artifactId>ratpack-core</artifactId>
             <version>${ratpack.version}</version>
         </dependency>
+        <dependency>
+    		<groupId>org.codehaus.groovy</groupId>
+		    <artifactId>groovy-sql</artifactId>
+		    <version>${groovy.sql.version}</version>
+		</dependency>
         <dependency>
             <groupId>io.ratpack</groupId>
             <artifactId>ratpack-hikari</artifactId>
             <version>${ratpack.version}</version>
         </dependency>
+        <dependency>
+        	<groupId>io.ratpack</groupId>
+            <artifactId>ratpack-groovy-test</artifactId>
+            <version>${ratpack.test.latest.version}</version>
+        </dependency>
         <dependency>
             <groupId>io.ratpack</groupId>
             <artifactId>ratpack-hystrix</artifactId>
@@ -91,6 +101,7 @@
         <httpclient.version>4.5.3</httpclient.version>
         <httpcore.version>4.4.6</httpcore.version>
         <hystrix.version>1.5.12</hystrix.version>
+        <groovy.sql.version>2.4.15</groovy.sql.version>
+        <ratpack.test.latest.version>1.6.1</ratpack.test.latest.version>
     </properties>
-
 </project>

ratpack/src/main/groovy/com/baeldung/Ratpack.groovy

@@ -0,0 +1,76 @@
+package com.baeldung;
+
+@Grab('io.ratpack:ratpack-groovy:1.6.1')
+import static ratpack.groovy.Groovy.ratpack
+
+import com.baeldung.model.User
+import com.google.common.reflect.TypeToken
+import ratpack.exec.Promise
+import ratpack.handling.Context
+import ratpack.jackson.Jackson
+import groovy.sql.Sql
+import java.sql.Connection
+import java.sql.PreparedStatement
+import java.sql.ResultSet
+import ratpack.hikari.HikariModule
+import javax.sql.DataSource;
+
+ratpack {
+    serverConfig { port(5050) }
+    bindings {
+        module(HikariModule) { config ->
+            config.dataSourceClassName = 'org.h2.jdbcx.JdbcDataSource'
+            config.addDataSourceProperty('URL', "jdbc:h2:mem:devDB;INIT=RUNSCRIPT FROM 'classpath:/User.sql'")
+        }
+    }
+
+    handlers {
+
+        get { render 'Hello World from Ratpack with Groovy!!' }
+
+        get("greet/:name") { Context ctx ->
+            render "Hello " + ctx.getPathTokens().get("name") + "!!!"
+        }
+
+        get("data") {
+            render Jackson.json([title: "Mr", name: "Norman", country: "USA"])
+        }
+
+        post("user") {
+            Promise<User> user = parse(Jackson.fromJson(User))
+            user.then { u -> render u.name }
+        }
+
+        get('fetchUserName/:id') { Context ctx ->
+            Connection connection = ctx.get(DataSource.class).getConnection()
+            PreparedStatement queryStatement = connection.prepareStatement("SELECT NAME FROM USER WHERE ID=?")
+            queryStatement.setInt(1, Integer.parseInt(ctx.getPathTokens().get("id")))
+            ResultSet resultSet = queryStatement.executeQuery()
+            resultSet.next()
+            render resultSet.getString(1)
+        }
+
+        get('fetchUsers') {
+            def db = [url:'jdbc:h2:mem:devDB']
+            def sql = Sql.newInstance(db.url, db.user, db.password)
+            def users = sql.rows("SELECT * FROM USER");
+            render(Jackson.json(users))
+        }
+
+        post('addUser') {
+            parse(Jackson.fromJson(User))
+                .then { u ->
+                    def db = [url:'jdbc:h2:mem:devDB']
+                    Sql sql = Sql.newInstance(db.url, db.user, db.password)
+                    sql.executeInsert("INSERT INTO USER VALUES (?,?,?,?)", [
+                        u.id,
+                        u.title,
+                        u.name,
+                        u.country
+                    ])
+                    render "User $u.name inserted"
+                }
+        }
+    }
+}
+

ratpack/src/main/groovy/com/baeldung/RatpackGroovyApp.groovy

@@ -0,0 +1,12 @@
+package com.baeldung;
+
+public class RatpackGroovyApp {
+
+    public static void main(String[] args) {
+        File file = new File("src/main/groovy/com/baeldung/Ratpack.groovy");
+        def shell = new GroovyShell()  
+        shell.evaluate(file)
+    }
+    
+}
+

ratpack/src/main/groovy/com/baeldung/model/User.groovy

@@ -0,0 +1,9 @@
+package com.baeldung.model
+
+class User {
+    
+    long id
+    String title
+    String name
+    String country
+}

ratpack/src/main/resources/User.sql

@@ -0,0 +1,10 @@
+DROP TABLE IF EXISTS USER;
+CREATE TABLE USER (
+  ID BIGINT AUTO_INCREMENT PRIMARY KEY,
+  TITLE VARCHAR(255),
+  NAME VARCHAR(255),
+  COUNTRY VARCHAR(255)
+);
+
+INSERT INTO USER VALUES(1,'Mr','Norman Potter', 'USA');
+INSERT INTO USER VALUES(2,'Miss','Ketty Smith', 'FRANCE');

ratpack/src/test/groovy/com/baeldung/RatpackGroovySpec.groovy

@@ -0,0 +1,46 @@
+package com.baeldung;
+
+import ratpack.groovy.Groovy
+import ratpack.groovy.test.GroovyRatpackMainApplicationUnderTest;
+import ratpack.test.http.TestHttpClient;
+import ratpack.test.ServerBackedApplicationUnderTest;
+import org.junit.Test;
+import org.junit.runner.RunWith
+import org.junit.runners.JUnit4
+import ratpack.test.MainClassApplicationUnderTest
+
+class RatpackGroovySpec {
+
+    ServerBackedApplicationUnderTest ratpackGroovyApp = new MainClassApplicationUnderTest(RatpackGroovyApp.class)
+    @Delegate TestHttpClient client = TestHttpClient.testHttpClient(ratpackGroovyApp)
+
+    @Test
+    void "test if app is started"() {
+        when:
+        get("")
+
+        then:
+        assert response.statusCode == 200
+        assert response.body.text == "Hello World from Ratpack with Groovy!!"
+    }
+
+    @Test
+    void "test greet with name"() {
+        when:
+        get("greet/Lewis")
+
+        then:
+        assert response.statusCode == 200
+        assert response.body.text == "Hello Lewis!!!"
+    }
+
+    @Test
+    void "test fetchUsers"() {
+        when:
+        get("fetchUsers")
+
+        then:
+        assert response.statusCode == 200
+        assert response.body.text == '[{"ID":1,"TITLE":"Mr","NAME":"Norman Potter","COUNTRY":"USA"},{"ID":2,"TITLE":"Miss","NAME":"Ketty Smith","COUNTRY":"FRANCE"}]'
+    }
+}