add Hello Kotlin

Author: scmacdon

.doc_gen/metadata/neptune_metadata.yaml

@@ -5,6 +5,15 @@ neptune_Hello:
   synopsis: get started using &neptune;.
   category: Hello
   languages:
+    Kotlin:
+      versions:
+        - sdk_version: 1
+          github: kotlin/services/neptune
+          sdkguide:
+          excerpts:
+            - description:
+              snippet_tags:
+                - neptune.kotlin.hello.main
     Python:
       versions:
         - sdk_version: 3

kotlin/services/neptune/src/main/java/com/example/neptune/scenerio/HelloNeptune.kt

@@ -0,0 +1,43 @@
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+package com.example.neptune.scenerio
+
+import aws.sdk.kotlin.services.neptune.NeptuneClient
+import aws.sdk.kotlin.services.neptune.model.DescribeDbClustersRequest
+
+// snippet-start:[neptune.kotlin.hello.main]
+/**
+ * Before running this Kotlin code example, set up your development environment, including your credentials.
+ *
+ * For more information, see the following documentation topic:
+ *
+ * https://docs.aws.amazon.com/sdk-for-kotlin/latest/developer-guide/setup.html
+ */
+suspend fun main(args: Array<String>) {
+    print("Hello Amazon Neptune")
+    listDBClusters()
+}
+
+/**
+ * Suspends the current coroutine to list details of DB clusters in Amazon Neptune.
+ */
+public suspend fun listDBClusters() {
+    val request = DescribeDbClustersRequest {
+        maxRecords = 20
+    }
+
+    NeptuneClient { region = "us-east-1" }.use { neptuneClient ->
+        neptuneClient.describeDbClusters(request)
+        val response = neptuneClient.describeDbClusters(request)
+        response.dbClusters?.forEach { cluster ->
+            println("Cluster Identifier: ${cluster.dbClusterIdentifier}")
+            println("Status: ${cluster.status}")
+            println("Endpoint: ${cluster.endpoint}")
+            println("Engine: ${cluster.engine}")
+            println("Engine Version: ${cluster.engineVersion}")
+            println("---")
+        }
+      }
+}
+// snippet-end:[neptune.kotlin.hello.main]

kotlin/services/neptune/src/main/java/com/example/neptune/scenerio/NeptuneScenario.kt

@@ -28,6 +28,14 @@ val DASHES = String(CharArray(80)).replace("\u0000", "-")
 var scanner = Scanner(System.`in`)
 private val pollInterval: Duration = Duration.ofSeconds(20)
 private val timeout: Duration = Duration.ofMinutes(30)
+
+/**
+ * Before running this Kotlin code example, set up your development environment, including your credentials.
+ *
+ * For more information, see the following documentation topic:
+ *
+ * https://docs.aws.amazon.com/sdk-for-kotlin/latest/developer-guide/setup.html
+ */
 suspend fun main(args: Array<String>) {
     val subnetGroupName = "neptuneSubnetGroup200"
     val clusterName = "neptuneCluster200"