Bigtable Java samples by elisheva-qlogic · Pull Request #3946 · googleapis/google-cloud-java

elisheva-qlogic · 2018-11-15T15:28:57Z

HelloWorld, TableAdmin, and InstanceAdmin examples

igorbernstein2

This is a good start, I added some comments, but didn't do a full review. Can you help me understand how samples work? how/who uses the comment tags? What are snippets? Why are other products differentiate between examples and snippets?

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+import com.google.cloud.bigtable.data.v2.models.RowMutation;
+import java.sql.Timestamp;
+
+// [START HelloWorld]


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+ String COLUMN_FAMILY_ID = "cf1";
+ String COLUMN_QUALIFIER = "greeting";
+ String INSTANCE_ID = System.getenv("INSTANCE_ID");
+ String GCLOUD_PROJECT_ID = System.getenv("GCLOUD_PROJECT_ID");


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+ String COLUMN_FAMILY_ID = "cf1";
+ String COLUMN_QUALIFIER = "greeting";
+ String INSTANCE_ID = System.getenv("INSTANCE_ID");
+ String GCLOUD_PROJECT_ID = System.getenv("GCLOUD_PROJECT_ID");


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+
+ try {
+ System.out.println("Write some greetings to the table");
+ String[] greetings = { "Hello World!", "Hello Bigtable!", "Hello Node!" };


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+ String[] greetings = { "Hello World!", "Hello Bigtable!", "Hello Node!" };
+ for (int i = 0; i < greetings.length; i++) {
+ RowMutation rowMutation = RowMutation.create(TABLE_ID, rowKeyPrefix + i);
+ long timestamp = new Timestamp(System.currentTimeMillis()).getTime();


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+ .println("PRODUCTION type instance : " + instance.getId() + " created successfully");
+
+ } catch (Exception e) {
+ System.out.println("Error creating prod-instance: " + e.getMessage());


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+ deleteCluster(adminClient, "ssd-instance", "ssd-cluster");
+
+ // end operations with deleting the pro-instance created in `runInstanceOperations`
+ deleteInstance(adminClient, "ssd-instance");


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+ BigtableInstanceAdminClient.create(instanceAdminSettings);
+
+ System.out.println("Create an instance (type: PRODUCTION) and run basic instance-operations");
+ runInstanceOperations(adminClient, "ssd-instance", "ssd-cluster");


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+ System.out.println("Delete the Instance");
+ deleteInstance(adminClient, "hdd-instance");
+
+ System.out.println("Add Cluster");


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+ try {
+ adminClient.deleteInstance(instanceID);
+ System.out.println("Instance deleted: " + instanceID);
+ } catch (Exception e) {


sduskis · 2018-11-15T16:26:30Z

@igorbernstein2, the snippets are used in https://cloud.google.com/bigtable/docs/. Our documentation has a tool to pull in code based on the tags

igorbernstein2 · 2018-11-15T16:44:38Z

Also, to @chingor13 comment, it would be good to add tests to make sure these snippets continue to work

sduskis · 2018-12-04T15:58:32Z

@elisheva-qlogic, there's a build failure:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.5.1:compile (default-compile) on project google-cloud-examples: Compilation failure
[ERROR] /tmpfs/src/github/google-cloud-java/google-cloud-examples/src/main/java/com/google/cloud/examples/bigtable/TableAdmin.java:[56,60] incompatible types
[ERROR] required: java.util.List<com.google.bigtable.admin.v2.TableName>
[ERROR] found: java.util.List<java.lang.String>

igorbernstein2

I think this sample should be restructured a bit

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+ String TABLE_ID,
+ String ROW_KEY_PREFIX,
+ String COLUMN_FAMILY_ID,
+ String COLUMN_QUALIFIER) {


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+ dataClient.mutateRow(rowMutation);
+ System.out.println(greetings[i]);
+ }
+ } catch (Exception e) {


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+ System.out.println(greetings[i]);
+ }
+ } catch (Exception e) {
+ System.out.println("Exception while writing to table: " + e.getMessage());


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+ } catch (Exception e) {
+ System.out.println("Exception while writing to table: " + e.getMessage());
+ }
+ return mutation;


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+ } catch (Exception e) {
+ System.out.println("Exception while reading table: " + e.getMessage());
+ }
+ return rowStream;


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+ }
+
+ public static Table createTable(
+ BigtableTableAdminClient adminClient, String TABLE_ID, String COLUMN_FAMILY_ID) {


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+
+public class HelloWorld {
+
+ public static void main(String... args) throws Exception {


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+
+ final String GCLOUD_PROJECT = args[0];
+ final String INSTANCE_ID = args[1];
+ final String TABLE_ID = "table";


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+ private static final String ROW_KEY_PREFIX = "test-rowKey";
+ private static BigtableDataClient dataClient;
+ private static BigtableTableAdminClient adminClient;
+


elisheva-qlogic · 2018-12-24T18:50:53Z

The main change is that HelloWorld sample is restructured. If this looks good, I will work on restructuring TableAdmin and InstanceAdmin samples like this as well.

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+ private static String instanceId;
+ private static String tableId;
+ private static BigtableDataClient dataClient;
+ private static BigtableTableAdminClient adminClient;


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+ deleteTable();
+ garbageCollect();
+ } catch (ApiException e) {
+ System.err.println("Exception while running HelloWorld: " + e.getMessage());


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+ // [END connecting_to_bigtable]
+ }
+
+ public void run() throws Exception {


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+ if (!adminClient.exists(tableId)) {
+ CreateTableRequest createTableRequest =
+ CreateTableRequest.of(tableId).addFamily(columnFamily);
+ System.out.println("Creating table: " + tableId);


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+ private static final String tablePrefix = "table";
+ private static final String columnFamily = "cf1";
+ private static final String columnQualifier = "greeting";
+ private static final String rowKeyPrefix = "rowKey";


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+ dataClient.mutateRow(rowMutation);
+ System.out.println(greetings[i]);
+ }
+ } catch (ApiException e) {


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+ public void readTable() {
+ // [START scanning_all_rows]
+ try {
+ System.out.println("\n================= Reading the entire table =================");


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+ adminClient.deleteTable(tableId);
+ }
+ }
+}


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+ System.out.println(greetings[i]);
+ }
+ } catch (NotFoundException e) {
+ System.err.println("Exception while writing to table: " + e.getMessage());


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+ }
+ tableId = generateTableId();
+ helloWorld = new HelloWorld(instanceName.getProject(), instanceName.getInstance(), tableId);
+ if (!adminClient.exists(tableId)) {


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+
+ // Read a single row
+ OutputStream outputStream = new ByteArrayOutputStream();
+ System.setOut(new PrintStream(outputStream));


sduskis · 2019-01-02T17:52:51Z

Closing this in favor of #4274

🤖 I have created a release *beep* *boop* --- <details><summary>2.63.0</summary> ## [2.63.0](googleapis/sdk-platform-java@v2.62.3...v2.63.0) (2025-10-16) ### Features * **librariangen:** add bazel package ([#3940](googleapis/sdk-platform-java#3940)) ([d6bd0e0](googleapis/sdk-platform-java@d6bd0e0)) * **librariangen:** add execv package ([#3932](googleapis/sdk-platform-java#3932)) ([7fc08a5](googleapis/sdk-platform-java@7fc08a5)) * **librariangen:** add protoc package ([#3935](googleapis/sdk-platform-java#3935)) ([c3f7b9f](googleapis/sdk-platform-java@c3f7b9f)) * **librariangen:** add request package ([#3933](googleapis/sdk-platform-java#3933)) ([c478a98](googleapis/sdk-platform-java@c478a98)) * **librariangen:** scaffold Java language container for Librarian ([#3926](googleapis/sdk-platform-java#3926)) ([aec74aa](googleapis/sdk-platform-java@aec74aa)) ### Dependencies * Bump errorprone-annotations to v2.42.0 ([4fa48a2](googleapis/sdk-platform-java@4fa48a2)) * Bump guava to v33.5.0 ([4fa48a2](googleapis/sdk-platform-java@4fa48a2)) * Bump j2objc-annotations to v3.1 ([4fa48a2](googleapis/sdk-platform-java@4fa48a2)) * update google auth library dependencies to v1.40.0 ([#3945](googleapis/sdk-platform-java#3945)) ([4b2c98e](googleapis/sdk-platform-java@4b2c98e)) * Upgrade Google Http Java Client to v2.0.2 ([#3946](googleapis/sdk-platform-java#3946)) ([89d518c](googleapis/sdk-platform-java@89d518c)) </details> --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

elisheva-qlogic requested a review from a teamNovember 15, 2018 15:28

googlebot added the cla: yes This human has signed the Contributor License Agreement. label Nov 15, 2018

igorbernstein2 reviewed Nov 15, 2018
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sduskis changed the title ~~Java samples~~Bigtable Java samplesNov 15, 2018

elisheva-qlogic force-pushed the samples branch from 4f20ff6 to 514b3abCompare December 6, 2018 21:29

elisheva-qlogic added 7 commits December 19, 2018 09:21

Java samples
b24d42f

Samples and tests
7932079

samples fixes
13b5c1c

code format fix
a5231c3

HelloWorld changes
adcafd0

system property for tests set up
5cc4f15

code format changes
7ad20e5

elisheva-qlogic force-pushed the samples branch from 4f35dbf to 7ad20e5Compare December 19, 2018 14:29

igorbernstein2 requested changes Dec 19, 2018
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changes
e57bb89

igorbernstein2 requested changes Dec 24, 2018
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elisheva-qlogic added 2 commits December 27, 2018 15:22

HelloWorld updates
b8b4f22

exceptions specified
99b5c63

igorbernstein2 reviewed Dec 28, 2018
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Comment threadgoogle-cloud-examples/src/main/java/com/google/cloud/examples/bigtable/HelloWorld.java
System.out.println(greetings[i]);
}
} catch (NotFoundException e) {
System.err.println("Exception while writing to table: " + e.getMessage());
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igorbernstein2 reviewed Dec 28, 2018
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sduskis closed this Jan 2, 2019

chingor13 pushed a commit that referenced this pull request Mar 24, 2026
deps: Upgrade Google Http Java Client to v2.0.2 (#3946)
89d518c


		public class HelloWorld {

		public static void main(String... args) throws Exception {

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sduskis commented Nov 15, 2018

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igorbernstein2 commented Nov 15, 2018

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elisheva-qlogic commented Dec 24, 2018

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