Add status

Author: debuglevel

build.gradle

@@ -28,7 +28,7 @@ compileTestKotlin {
 }
 
 group 'de.debuglevel.sparkmicroserviceutils'
-version '0.0.10'
+version '0.0.11'
 
 sourceCompatibility = 1.8
 

src/main/kotlin/de/debuglevel/microservices/utils/status/Status.kt

@@ -0,0 +1,50 @@
+package de.debuglevel.microservices.utils.status
+
+import mu.KotlinLogging
+import org.eclipse.jetty.util.Uptime.getUptime
+import spark.Spark
+import spark.kotlin.get
+import java.lang.management.ManagementFactory
+
+private val logger = KotlinLogging.logger {}
+
+var status = "up"
+
+/**
+ * Sets a path to /status/ which returns a JSON object about the current server status and environment information
+ */
+fun status() {
+    logger.info("Activating path /status/")
+
+    Spark.path("/status") {
+        get("/") {
+            logger.info("Got request for /status/")
+
+            type(contentType = "application/json")
+            buildStatusJson()
+        }
+    }
+}
+
+private fun buildStatusJson(): String {
+    return """
+                {
+                    "status":"$status",
+                    "uptime":"${getUptime()}",
+                    "jvmName":"${ManagementFactory.getRuntimeMXBean().name}",
+                    "jvmSpecName":"${ManagementFactory.getRuntimeMXBean().specName}",
+                    "jvmSpecVendor":"${ManagementFactory.getRuntimeMXBean().specVendor}",
+                    "jvmSpecVersion":"${ManagementFactory.getRuntimeMXBean().specVersion}",
+                    "vmName":"${ManagementFactory.getRuntimeMXBean().vmName}",
+                    "vmVendor":"${ManagementFactory.getRuntimeMXBean().vmVendor}",
+                    "vmVersion":"${ManagementFactory.getRuntimeMXBean().vmVersion}",
+                    "compilerName":"${ManagementFactory.getCompilationMXBean().name}"
+                }
+            """.trimIndent()
+}
+
+/**
+ * Gets the application uptime in seconds
+ */
+private fun getUptime() =
+        ManagementFactory.getRuntimeMXBean().uptime / 1000