Initial commit

Procfile

@@ -0,0 +1 @@
+web: java -jar target\heroku-spark-example-1.0-jar-with-dependencies.jar

heroku-spark-example.iml

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4" />

pom.xml

@@ -0,0 +1,80 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.mycompany.app</groupId>
+    <artifactId>heroku-spark-example</artifactId>
+    <version>1.0</version>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <kotlin.version>1.2.71</kotlin.version>
+        <javalin.version>2.4.0</javalin.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-stdlib</artifactId>
+            <version>${kotlin.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.sparkjava</groupId>
+            <artifactId>spark-kotlin</artifactId>
+            <version>1.0.0-alpha</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>2.3.2</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
+            </plugin>
+            <plugin>
+                <artifactId>maven-assembly-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>single</goal>
+                        </goals>
+                    </execution>
+                </executions>
+                <configuration>
+                    <descriptorRefs>
+                        <!-- This tells Maven to include all dependencies -->
+                        <descriptorRef>jar-with-dependencies</descriptorRef>
+                    </descriptorRefs>
+                    <archive>
+                        <manifest>
+                            <mainClass>app.Main</mainClass>
+                        </manifest>
+                    </archive>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>com.heroku.sdk</groupId>
+                <artifactId>heroku-maven-plugin</artifactId>
+                <version>0.4.4</version>
+                <configuration>
+                    <jdkVersion>1.8</jdkVersion>
+                    <!-- Use your own application name -->
+                    <appName>heroku-spark-example</appName>
+                    <processTypes>
+                        <!-- Tell Heroku how to launch your application -->
+                        <!-- You might have to remove the ./ in front   -->
+                        <web>java -jar target/heroku-spark-example-1.0-jar-with-dependencies.jar</web>
+                    </processTypes>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+</project>

src/main/app/Main.kt

@@ -0,0 +1,20 @@
+package app
+
+import spark.Spark.*
+
+open class Main {
+    companion object {
+        @JvmStatic
+        fun main(args: Array<String>) {
+            port(getHerokuAssignedPort())
+            get("/hello") { req, res -> "Hello Heroku from Spark" }
+        }
+
+        fun getHerokuAssignedPort(): Int {
+            val processBuilder = ProcessBuilder()
+            processBuilder.environment().get("PORT").let {
+                return if (it != null) Integer.parseInt(it) else 7000
+            }
+        }
+    }
+}