samples: Add Data Catalog createEntry quickstart samples and tests. (#1731)

* ADD sample for create fileset entry quickstart

* RAN google java format

* CHANGE exception comment

* FIX lint issues

* Split quickstart into a new folder

* Rename files since class name will appear on samples

* Ran java formatter

* revert region tags change

* remove extra space

* change to real bucket name

Author: mesmacosta

datacatalog/snippets/src/main/java/com/example/datacatalog/CreateFilesetEntry.java

@@ -54,7 +54,7 @@ public static void createEntry(String projectId, String entryGroupId, String ent
               .setDisplayName("My Fileset")
               .setDescription("This fileset consists of ....")
               .setGcsFilesetSpec(
-                  GcsFilesetSpec.newBuilder().addFilePatterns("gs://my_bucket/*").build())
+                  GcsFilesetSpec.newBuilder().addFilePatterns("gs://cloud-samples-data/*").build())
               .setSchema(
                   Schema.newBuilder()
                       .addColumns(

datacatalog/snippets/src/test/java/com/example/datacatalog/CreateEntryTests.java

@@ -17,12 +17,15 @@
 package com.example.datacatalog;
 
 import static org.junit.Assert.assertThat;
+import static org.junit.Assert.fail;
 
 import com.google.cloud.datacatalog.EntryGroupName;
 import com.google.cloud.datacatalog.EntryName;
 import com.google.cloud.datacatalog.v1beta1.DataCatalogClient;
 import java.io.ByteArrayOutputStream;
 import java.io.PrintStream;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.UUID;
 import org.hamcrest.CoreMatchers;
 import org.junit.After;
@@ -38,15 +41,12 @@ public class CreateEntryTests {
 
   private ByteArrayOutputStream bout;
 
-  private static String ENTRY_GROUP_ID_NO_CHILDREN =
-      "entry_group_no_children_" + UUID.randomUUID().toString().substring(0, 8);
-  private static String PARENT_ENTRY_GROUP_ID =
-      "fileset_entry_group_parent_" + UUID.randomUUID().toString().substring(0, 8);
-  private static String ENTRY_ID =
-      "fileset_entry_id_" + UUID.randomUUID().toString().substring(0, 8);
   private static String LOCATION = "us-central1";
   private static String PROJECT_ID = System.getenv().get("GOOGLE_CLOUD_PROJECT");
 
+  private static List<String> entryGroupsPendingDeletion = new ArrayList<>();
+  private static List<String> entriesPendingDeletion = new ArrayList<>();
+
   @Before
   public void setUp() {
     bout = new ByteArrayOutputStream();
@@ -62,45 +62,67 @@ public void tearDown() {
   @AfterClass
   public static void tearDownClass() {
     try (DataCatalogClient dataCatalogClient = DataCatalogClient.create()) {
-      dataCatalogClient.deleteEntryGroup(
-          EntryGroupName.of(PROJECT_ID, LOCATION, ENTRY_GROUP_ID_NO_CHILDREN).toString());
-
-      dataCatalogClient.deleteEntry(
-          EntryName.of(PROJECT_ID, LOCATION, PARENT_ENTRY_GROUP_ID, ENTRY_ID).toString());
-      dataCatalogClient.deleteEntryGroup(
-          EntryGroupName.of(PROJECT_ID, LOCATION, PARENT_ENTRY_GROUP_ID).toString());
+      // Must delete Entries before deleting the Entry Group.
+      if (entriesPendingDeletion.isEmpty() || entryGroupsPendingDeletion.isEmpty()) {
+        fail("Something went wrong, no entries were generated");
+      }
+
+      for (String entryName : entriesPendingDeletion) {
+        dataCatalogClient.deleteEntry(entryName);
+      }
+
+      for (String entryGroupName : entryGroupsPendingDeletion) {
+        dataCatalogClient.deleteEntryGroup(entryGroupName);
+      }
     } catch (Exception e) {
       System.out.println("Error in cleaning up test data:\n" + e.toString());
     }
   }
 
   @Test
   public void testCreateFilesetEntry() {
+    String entryGroupId = "fileset_entry_group_parent_" + getUuid8Chars();
+    String entryId = "fileset_entry_id_" + getUuid8Chars();
+
     // Must create a Entry Group before creating the entry.
-    CreateEntryGroup.createEntryGroup(PROJECT_ID, PARENT_ENTRY_GROUP_ID);
-    CreateFilesetEntry.createEntry(PROJECT_ID, PARENT_ENTRY_GROUP_ID, ENTRY_ID);
+    CreateEntryGroup.createEntryGroup(PROJECT_ID, entryGroupId);
+    CreateFilesetEntry.createEntry(PROJECT_ID, entryGroupId, entryId);
+
+    // Store names for clean up on teardown
+    String expectedEntryGroupName =
+        EntryGroupName.of(PROJECT_ID, LOCATION, entryGroupId).toString();
+    entryGroupsPendingDeletion.add(expectedEntryGroupName);
+
+    String expectedEntryName = EntryName.of(PROJECT_ID, LOCATION, entryGroupId, entryId).toString();
+    entriesPendingDeletion.add(expectedEntryName);
 
     String output = bout.toString();
 
-    String entryTemplate =
-        "Entry created with name: projects/%s/locations/us-central1/entryGroups/%s/entries/%s";
+    String entryTemplate = "Entry created with name: %s";
     assertThat(
-        output,
-        CoreMatchers.containsString(
-            String.format(entryTemplate, PROJECT_ID, PARENT_ENTRY_GROUP_ID, ENTRY_ID)));
+        output, CoreMatchers.containsString(String.format(entryTemplate, expectedEntryName)));
   }
 
   @Test
   public void testCreateEntryGroup() {
-    CreateEntryGroup.createEntryGroup(PROJECT_ID, ENTRY_GROUP_ID_NO_CHILDREN);
+    String entryGroupId = "entry_group_no_children_" + getUuid8Chars();
+
+    CreateEntryGroup.createEntryGroup(PROJECT_ID, entryGroupId);
+
+    // Store names for clean up on teardown
+    String expectedEntryGroupName =
+        EntryGroupName.of(PROJECT_ID, LOCATION, entryGroupId).toString();
+    entryGroupsPendingDeletion.add(expectedEntryGroupName);
 
     String output = bout.toString();
 
-    String entryGroupTemplate =
-        "Entry Group created with name: projects/%s/locations/us-central1/entryGroups/%s";
+    String entryGroupTemplate = "Entry Group created with name: %s";
     assertThat(
         output,
-        CoreMatchers.containsString(
-            String.format(entryGroupTemplate, PROJECT_ID, ENTRY_GROUP_ID_NO_CHILDREN)));
+        CoreMatchers.containsString(String.format(entryGroupTemplate, expectedEntryGroupName)));
+  }
+
+  private String getUuid8Chars() {
+    return UUID.randomUUID().toString().substring(0, 8);
   }
-}
+}