samples fixes

Author: elisheva-qlogic

google-cloud-examples/src/main/java/com/google/cloud/examples/bigtable/HelloWorld.java

@@ -45,7 +45,7 @@ public static void main(String... args) throws Exception {
     }
 
     // [START connecting_to_bigtable]
-    // create the settings to configure a bigtable data client
+    // Create the settings to configure a bigtable data client
     BigtableDataSettings settings = BigtableDataSettings.newBuilder()
         .setInstanceName(InstanceName.of(GCLOUD_PROJECT_ID, INSTANCE_ID)).build();
 
@@ -87,17 +87,28 @@ public static void main(String... args) throws Exception {
   public static Table createTable(BigtableTableAdminClient adminClient, String TABLE_ID,
       String COLUMN_FAMILY_ID) {
     // [START creating_a_table]
-    Table table = null;
+    Table table;
     if (!adminClient.exists(TABLE_ID)) {
-      CreateTableRequest createTableRequest =
-          CreateTableRequest.of(TABLE_ID).addFamily(COLUMN_FAMILY_ID);
-      System.out.println("Creating table: " + TABLE_ID);
-      table = adminClient.createTable(createTableRequest);
+      table = creatingTable(adminClient, TABLE_ID, COLUMN_FAMILY_ID);
+    } else {
+      // Delete and recreate table
+      System.out.println("Deleting existing table and creating new one");
+      adminClient.deleteTable(TABLE_ID);
+      table = creatingTable(adminClient, TABLE_ID, COLUMN_FAMILY_ID);
     }
     return table;
     // [END creating_a_table]
   }
 
+  private static Table creatingTable(BigtableTableAdminClient adminClient, String TABLE_ID,
+      String COLUMN_FAMILY_ID) {
+    CreateTableRequest createTableRequest =
+        CreateTableRequest.of(TABLE_ID).addFamily(COLUMN_FAMILY_ID);
+    System.out.println("Creating table: " + TABLE_ID);
+    Table table = adminClient.createTable(createTableRequest);
+    return table;
+  }
+
   public static RowMutation writeToTable(BigtableDataClient dataClient, String TABLE_ID,
       String ROW_KEY_PREFIX, String COLUMN_FAMILY_ID, String COLUMN_QUALIFIER) {
     // [START writing_rows]
@@ -169,4 +180,4 @@ public static void deleteTable(BigtableTableAdminClient adminClient, String TABL
     }
     // [END deleting_a_table]
   }
-}
+}

google-cloud-examples/src/main/java/com/google/cloud/examples/bigtable/InstanceAdmin.java

@@ -88,14 +88,15 @@ public static Instance createProdInstance(BigtableInstanceAdminClient adminClien
     } catch (Exception e) {
       System.out.println("Error checking if instance exists: " + e.getMessage());
     }
+    // [END bigtable_check_instance_exists]
 
     Instance instance = null;
-    // Create instance if does not exists
+    // Create an instance if does not exists
     if (!found) {
       System.out.println("Instance does not exist, creating a PRODUCTION instance:");
       // [START bigtable_create_prod_instance]
-      // Creates a Production Instance with the ID "ssd-instance"
-      // with cluster id "ssd-cluster", 3 nodes and location us-central1-f
+      // Create a Production Instance with the ID "ssd-instance"
+      // cluster id "ssd-cluster", 3 nodes and location us-central1-f
       CreateInstanceRequest createInstanceRequest = CreateInstanceRequest.of(instanceID)
           .addCluster(clusterID, "us-central1-f", 3, StorageType.SSD).setType(Type.PRODUCTION)
           .addLabel("example", "instance_admin");
@@ -203,7 +204,6 @@ public static Cluster addCluster(BigtableInstanceAdminClient adminClient, String
 
   public static void deleteCluster(BigtableInstanceAdminClient adminClient, String instanceID,
       String clusterID) {
-    // [START bigtable_delete_cluster]
     System.out.println("\nDeleting Cluster");
     // [START bigtable_delete_cluster]
     try {

google-cloud-examples/src/test/java/com/google/cloud/examples/bigtable/HelloWorldTest.java

@@ -71,11 +71,11 @@ public static void afterClass() throws Exception {
   @Test
   public void testCreateAndDeleteTable() {
     // Create table
-    Table table = TableAdmin.createTable(adminClient, "fake-table");
+    Table table = HelloWorld.createTable(adminClient, "fake-table", "fake-column-family-id");
     assertNotNull(table);
 
     // Delete table
-    TableAdmin.deleteTable(adminClient, "fake-table");
+    HelloWorld.deleteTable(adminClient, "fake-table");
     assertTrue(!adminClient.exists("fake-table"));
   }