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samples: add support for BatchWriteAtLeastOnce (#2506)
* samples: add support for BatchWriteAtleastOnce * samples: add support for BatchWriteAtleastOnce * samples: add support for BatchWriteAtleastOnce * modify sample based on new design * remove host * chore: review comments. * 🦉 Updates from OwlBot post-processor See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md * chore: fix review comments. --------- Co-authored-by: Arpan Mishra <[email protected]> Co-authored-by: Arpan Mishra <[email protected]> Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
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samples/snippets/src/main/java/com/example/spanner/BatchWriteAtLeastOnceSample.java
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| /* | ||
| * Copyright 2023 Google LLC | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
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| package com.example.spanner; | ||
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| // [START spanner_batch_write_at_least_once] | ||
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| import com.google.api.gax.rpc.ServerStream; | ||
| import com.google.cloud.spanner.DatabaseClient; | ||
| import com.google.cloud.spanner.DatabaseId; | ||
| import com.google.cloud.spanner.Mutation; | ||
| import com.google.cloud.spanner.MutationGroup; | ||
| import com.google.cloud.spanner.Options; | ||
| import com.google.cloud.spanner.Spanner; | ||
| import com.google.cloud.spanner.SpannerOptions; | ||
| import com.google.common.collect.ImmutableList; | ||
| import com.google.rpc.Code; | ||
| import com.google.spanner.v1.BatchWriteResponse; | ||
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| public class BatchWriteAtLeastOnceSample { | ||
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| /*** | ||
| * Assume DDL for the underlying database: | ||
| * <pre>{@code | ||
| * CREATE TABLE Singers ( | ||
| * SingerId INT64 NOT NULL, | ||
| * FirstName STRING(1024), | ||
| * LastName STRING(1024), | ||
| * ) PRIMARY KEY (SingerId) | ||
| * | ||
| * CREATE TABLE Albums ( | ||
| * SingerId INT64 NOT NULL, | ||
| * AlbumId INT64 NOT NULL, | ||
| * AlbumTitle STRING(1024), | ||
| * ) PRIMARY KEY (SingerId, AlbumId), | ||
| * INTERLEAVE IN PARENT Singers ON DELETE CASCADE | ||
| * }</pre> | ||
| */ | ||
|
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| private static final MutationGroup MUTATION_GROUP1 = | ||
| MutationGroup.of( | ||
| Mutation.newInsertOrUpdateBuilder("Singers") | ||
| .set("SingerId") | ||
| .to(16) | ||
| .set("FirstName") | ||
| .to("Scarlet") | ||
| .set("LastName") | ||
| .to("Terry") | ||
| .build()); | ||
| private static final MutationGroup MUTATION_GROUP2 = | ||
| MutationGroup.of( | ||
| Mutation.newInsertOrUpdateBuilder("Singers") | ||
| .set("SingerId") | ||
| .to(17) | ||
| .set("FirstName") | ||
| .to("Marc") | ||
| .build(), | ||
| Mutation.newInsertOrUpdateBuilder("Singers") | ||
| .set("SingerId") | ||
| .to(18) | ||
| .set("FirstName") | ||
| .to("Catalina") | ||
| .set("LastName") | ||
| .to("Smith") | ||
| .build(), | ||
| Mutation.newInsertOrUpdateBuilder("Albums") | ||
| .set("SingerId") | ||
| .to(17) | ||
| .set("AlbumId") | ||
| .to(1) | ||
| .set("AlbumTitle") | ||
| .to("Total Junk") | ||
| .build(), | ||
| Mutation.newInsertOrUpdateBuilder("Albums") | ||
| .set("SingerId") | ||
| .to(18) | ||
| .set("AlbumId") | ||
| .to(2) | ||
| .set("AlbumTitle") | ||
| .to("Go, Go, Go") | ||
| .build()); | ||
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| static void batchWriteAtLeastOnce() { | ||
| // TODO(developer): Replace these variables before running the sample. | ||
| final String projectId = "my-project"; | ||
| final String instanceId = "my-instance"; | ||
| final String databaseId = "my-database"; | ||
| batchWriteAtLeastOnce(projectId, instanceId, databaseId); | ||
| } | ||
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| static void batchWriteAtLeastOnce(String projectId, String instanceId, String databaseId) { | ||
| try (Spanner spanner = | ||
| SpannerOptions.newBuilder().setProjectId(projectId).build().getService()) { | ||
| DatabaseId dbId = DatabaseId.of(projectId, instanceId, databaseId); | ||
| final DatabaseClient dbClient = spanner.getDatabaseClient(dbId); | ||
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| // Creates and issues a BatchWrite RPC request that will apply the mutation groups | ||
| // non-atomically and respond back with a stream of BatchWriteResponse. | ||
| ServerStream<BatchWriteResponse> responses = | ||
| dbClient.batchWriteAtLeastOnce( | ||
| ImmutableList.of(MUTATION_GROUP1, MUTATION_GROUP2), | ||
| Options.tag("batch-write-tag")); | ||
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| // Iterates through the results in the stream response and prints the MutationGroup indexes, | ||
| // commit timestamp and status. | ||
| for (BatchWriteResponse response : responses) { | ||
| if (response.getStatus().getCode() == Code.OK_VALUE) { | ||
| System.out.printf( | ||
| "Mutation group indexes %s have been applied with commit timestamp %s", | ||
| response.getIndexesList(), response.getCommitTimestamp()); | ||
| } else { | ||
| System.out.printf( | ||
| "Mutation group indexes %s could not be applied with error code %s and " | ||
| + "error message %s", response.getIndexesList(), | ||
| Code.forNumber(response.getStatus().getCode()), response.getStatus().getMessage()); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| // [END spanner_batch_write_at_least_once] |
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samples/snippets/src/test/java/com/example/spanner/BatchWriteAtLeastOnceSampleIT.java
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| /* | ||
| * Copyright 2023 Google LLC | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
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| package com.example.spanner; | ||
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| import static org.junit.Assert.assertTrue; | ||
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| import com.google.cloud.spanner.DatabaseId; | ||
| import com.google.common.collect.ImmutableList; | ||
| import java.util.concurrent.ExecutionException; | ||
| import org.junit.Before; | ||
| import org.junit.Test; | ||
|
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| public class BatchWriteAtLeastOnceSampleIT extends SampleTestBase { | ||
| private static String databaseId; | ||
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| @Before | ||
| public void setup() throws ExecutionException, InterruptedException { | ||
| databaseId = idGenerator.generateDatabaseId(); | ||
| databaseAdminClient | ||
| .createDatabase( | ||
| databaseAdminClient | ||
| .newDatabaseBuilder(DatabaseId.of(projectId, instanceId, databaseId)) | ||
| .build(), | ||
| ImmutableList.of( | ||
| "CREATE TABLE Singers (" | ||
| + " SingerId INT64 NOT NULL," | ||
| + " FirstName STRING(1024)," | ||
| + " LastName STRING(1024)" | ||
| + ") PRIMARY KEY (SingerId)", | ||
| "CREATE TABLE Albums (" | ||
| + " SingerId INT64 NOT NULL," | ||
| + " AlbumId INT64 NOT NULL," | ||
| + " AlbumTitle STRING(1024)" | ||
| + ") PRIMARY KEY (SingerId, AlbumId)," | ||
| + " INTERLEAVE IN PARENT Singers ON DELETE CASCADE")) | ||
| .get(); | ||
| } | ||
|
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| @Test | ||
| public void testBatchWriteAtLeastOnce() throws Exception { | ||
| final String out = | ||
| SampleRunner.runSample(() -> BatchWriteAtLeastOnceSample.batchWriteAtLeastOnce( | ||
| projectId, instanceId, databaseId)); | ||
| assertTrue(out.contains("have been applied with commit timestamp")); | ||
| } | ||
| } |