Add a basic health check and make sure `./gradlew run` actually stands up the server

.gitignore

@@ -1,3 +1,4 @@
 build/
 .gradle/
 *.sw*
+.idea/

build.gradle

@@ -4,6 +4,9 @@ plugins {
     id 'codenarc'
 }
 
+description = 'Offtopic is for watching Kafka topics'
+mainClassName = 'offtopic.OfftopicApp'
+
 repositories {
     jcenter()
 }
@@ -29,3 +32,7 @@ test {
 codenarc {
     configFile = file("${projectDir}/gradle/codenarc.xml")
 }
+
+run {
+    args 'server', 'offtopic.example.yml'
+}

gradle.properties

@@ -1,3 +1,8 @@
+// Project settings
+version=0.3.0
+group=com.github.rtyler
+
+// Build settings
 dropwizardVersion=0.8.1
 groovyVersion=2.4.3
 

offtopic.example.yml

@@ -0,0 +1,2 @@
+logging:
+  level: INFO

src/main/groovy/offtopic/OfftopicApp.groovy

@@ -4,12 +4,15 @@ import io.dropwizard.Application
 import io.dropwizard.setup.Bootstrap
 import io.dropwizard.setup.Environment
 
+import groovy.transform.TypeChecked
+
 import org.slf4j.Logger
 import org.slf4j.LoggerFactory
 
 /**
  * Primary application instance for Dropwizard
  */
+@TypeChecked
 class OfftopicApp extends Application<OfftopicConfig> {
     /**
      * Primary logger instance for the app
@@ -28,6 +31,8 @@ class OfftopicApp extends Application<OfftopicConfig> {
     @Override
     void run(OfftopicConfig configuration, Environment environment) throws Exception {
         this.logger.info("Starting the Offtopic application")
+
+        environment.healthChecks().register('sanity', new offtopic.health.BasicHealth())
     }
 
     @Override

src/main/groovy/offtopic/health/BasicHealth.groovy

@@ -0,0 +1,14 @@
+package offtopic.health
+
+import com.codahale.metrics.health.HealthCheck
+import com.codahale.metrics.health.HealthCheck.Result
+
+/**
+ * A basic healthcheck to ensure that the application is at least executing properly
+ */
+class BasicHealth extends HealthCheck {
+    @Override
+    protected Result check() {
+        return Result.healthy()
+    }
+}

src/main/groovy/offtopic/resources/MainResource.groovy

@@ -0,0 +1,8 @@
+package offtopic.resources
+
+/**
+ *
+ */
+@SuppressWarnings('EmptyClass')
+class MainResource {
+}