Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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. */ package org.apache.beam.sdk.io.aws.dynamodb; import com.amazonaws.services.dynamodbv2.AmazonDynamoDB; import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClientBuilder; import com.amazonaws.services.dynamodbv2.model.AttributeDefinition; import com.amazonaws.services.dynamodbv2.model.AttributeValue; import com.amazonaws.services.dynamodbv2.model.BatchWriteItemRequest; import com.amazonaws.services.dynamodbv2.model.CreateTableRequest; import com.amazonaws.services.dynamodbv2.model.CreateTableResult; import com.amazonaws.services.dynamodbv2.model.KeySchemaElement; import com.amazonaws.services.dynamodbv2.model.KeyType; import com.amazonaws.services.dynamodbv2.model.ListTablesResult; import com.amazonaws.services.dynamodbv2.model.ProvisionedThroughput; import com.amazonaws.services.dynamodbv2.model.PutRequest; import com.amazonaws.services.dynamodbv2.model.ScalarAttributeType; import com.amazonaws.services.dynamodbv2.model.ScanRequest; import com.amazonaws.services.dynamodbv2.model.ScanResult; import com.amazonaws.services.dynamodbv2.model.TableDescription; import com.amazonaws.services.dynamodbv2.model.WriteRequest; import java.io.Serializable; import java.util.ArrayList; import java.util.List; import java.util.Map; import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.ImmutableList; import org.junit.Assert; import org.junit.Rule; import org.testcontainers.containers.localstack.LocalStackContainer; /** A utility to generate test table and data for {@link DynamoDBIOTest}. */ class DynamoDBIOTestHelper implements Serializable { @Rule private static LocalStackContainer localStackContainer = new LocalStackContainer() .withServices(LocalStackContainer.Service.DYNAMODB); private static AmazonDynamoDB dynamoDBClient; static final String ATTR_NAME_1 = "hashKey1"; static final String ATTR_NAME_2 = "rangeKey2"; static void startServerClient() { localStackContainer.start(); if (dynamoDBClient == null) { dynamoDBClient = AmazonDynamoDBClientBuilder.standard() .withEndpointConfiguration( localStackContainer.getEndpointConfiguration(LocalStackContainer.Service.DYNAMODB)) .withCredentials(localStackContainer.getDefaultCredentialsProvider()).build(); } } static void stopServerClient(String tableName) { if (dynamoDBClient != null) { dynamoDBClient.deleteTable(tableName); dynamoDBClient.shutdown(); } localStackContainer.stop(); } static AmazonDynamoDB getDynamoDBClient() { // Note: each test case got to have their own dynamo client obj, can't be shared // Otherwise will run into connection pool issue return AmazonDynamoDBClientBuilder.standard() .withEndpointConfiguration( localStackContainer.getEndpointConfiguration(LocalStackContainer.Service.DYNAMODB)) .withCredentials(localStackContainer.getDefaultCredentialsProvider()).build(); } static List<Map<String, AttributeValue>> generateTestData(String tableName, int numOfItems) { BatchWriteItemRequest batchWriteItemRequest = generateBatchWriteItemRequest(tableName, numOfItems); dynamoDBClient.batchWriteItem(batchWriteItemRequest); ScanResult scanResult = dynamoDBClient.scan(new ScanRequest().withTableName(tableName)); List<Map<String, AttributeValue>> items = scanResult.getItems(); Assert.assertEquals(numOfItems, items.size()); return items; } static BatchWriteItemRequest generateBatchWriteItemRequest(String tableName, int numOfItems) { BatchWriteItemRequest batchWriteItemRequest = new BatchWriteItemRequest(); batchWriteItemRequest.addRequestItemsEntry(tableName, generateWriteRequests(numOfItems)); return batchWriteItemRequest; } static List<WriteRequest> generateWriteRequests(int numOfItem) { List<WriteRequest> writeRequests = new ArrayList<>(); for (int i = 1; i <= numOfItem; i++) { WriteRequest writeRequest = new WriteRequest(); writeRequest.setPutRequest(generatePutRequest("hashKeyDataStr_" + i, "1000" + i)); writeRequests.add(writeRequest); } return writeRequests; } private static PutRequest generatePutRequest(String hashKeyData, String rangeKeyData) { PutRequest putRequest = new PutRequest(); putRequest.addItemEntry(ATTR_NAME_1, new AttributeValue(hashKeyData)); putRequest.addItemEntry(ATTR_NAME_2, new AttributeValue().withN(rangeKeyData)); return putRequest; } static void createTestTable(String tableName) { CreateTableResult res = createDynamoTable(tableName); TableDescription tableDesc = res.getTableDescription(); Assert.assertEquals(tableName, tableDesc.getTableName()); Assert.assertTrue(tableDesc.getKeySchema().toString().contains(ATTR_NAME_1)); Assert.assertTrue(tableDesc.getKeySchema().toString().contains(ATTR_NAME_2)); Assert.assertEquals(tableDesc.getProvisionedThroughput().getReadCapacityUnits(), Long.valueOf(1000)); Assert.assertEquals(tableDesc.getProvisionedThroughput().getWriteCapacityUnits(), Long.valueOf(1000)); Assert.assertEquals("ACTIVE", tableDesc.getTableStatus()); Assert.assertEquals("arn:aws:dynamodb:us-east-1:000000000000:table/" + tableName, tableDesc.getTableArn()); ListTablesResult tables = dynamoDBClient.listTables(); Assert.assertEquals(1, tables.getTableNames().size()); } private static CreateTableResult createDynamoTable(String tableName) { ImmutableList<AttributeDefinition> attributeDefinitions = ImmutableList.of( new AttributeDefinition(ATTR_NAME_1, ScalarAttributeType.S), new AttributeDefinition(ATTR_NAME_2, ScalarAttributeType.N)); ImmutableList<KeySchemaElement> ks = ImmutableList.of(new KeySchemaElement(ATTR_NAME_1, KeyType.HASH), new KeySchemaElement(ATTR_NAME_2, KeyType.RANGE)); ProvisionedThroughput provisionedthroughput = new ProvisionedThroughput(1000L, 1000L); CreateTableRequest request = new CreateTableRequest().withTableName(tableName) .withAttributeDefinitions(attributeDefinitions).withKeySchema(ks) .withProvisionedThroughput(provisionedthroughput); return dynamoDBClient.createTable(request); } }