Amazon DynamoDB table w/ Elastic Beanstalk 没有设置正确的参数

Question

我有一个来自 Amazon 的示例 Dynamodb 项目，当上传到 Elastic Beanstalk 环境的实例时，会生成一个 Dynamodb table。但是，在生成 table 后缺少一些参数。

这是 Elastic Beanstalk 实例的代码：

/*
 * Copyright 2010-2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 * 
 *  http://aws.amazon.com/apache2.0
 * 
 * or in the "license" file accompanying this file. This file 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 com.amazonaws.geo.util;

import com.amazonaws.geo.GeoDataManagerConfiguration;
import com.amazonaws.services.dynamodbv2.model.AttributeDefinition;
import com.amazonaws.services.dynamodbv2.model.CreateTableRequest;
import com.amazonaws.services.dynamodbv2.model.KeySchemaElement;
import com.amazonaws.services.dynamodbv2.model.KeyType;
import com.amazonaws.services.dynamodbv2.model.LocalSecondaryIndex;
import com.amazonaws.services.dynamodbv2.model.Projection;
import com.amazonaws.services.dynamodbv2.model.ProjectionType;
import com.amazonaws.services.dynamodbv2.model.ProvisionedThroughput;
import com.amazonaws.services.dynamodbv2.model.ScalarAttributeType;

/**
 * Utility class.
 * */
public class GeoTableUtil {

    /**
     * <p>
     * Construct a create table request object based on GeoDataManagerConfiguration. The users can update any aspect of
     * the request and call it.
     * </p>
     * Example:
     * 
     * <pre>
     * AmazonDynamoDBClient ddb = new AmazonDynamoDBClient(new ClasspathPropertiesFileCredentialsProvider());
     * Region usWest2 = Region.getRegion(Regions.US_WEST_2);
     * ddb.setRegion(usWest2);
     * 
     * CreateTableRequest createTableRequest = GeoTableUtil.getCreateTableRequest(config);
     * CreateTableResult createTableResult = ddb.createTable(createTableRequest);
     * </pre>
     * 
     * @return Generated create table request.
     */
    public static CreateTableRequest getCreateTableRequest(GeoDataManagerConfiguration config) {
        CreateTableRequest createTableRequest = new CreateTableRequest()
                .withTableName(config.getTableName())
                .withProvisionedThroughput(
                        new ProvisionedThroughput().withReadCapacityUnits(10L).withWriteCapacityUnits(5L))
                .withKeySchema(
                        new KeySchemaElement().withKeyType(KeyType.HASH).withAttributeName(
                                config.getHashKeyAttributeName()),
                        new KeySchemaElement().withKeyType(KeyType.RANGE).withAttributeName(
                                config.getRangeKeyAttributeName()))
                .withAttributeDefinitions(
                        new AttributeDefinition().withAttributeType(ScalarAttributeType.N).withAttributeName(
                                config.getHashKeyAttributeName()),
                        new AttributeDefinition().withAttributeType(ScalarAttributeType.S).withAttributeName(
                                config.getRangeKeyAttributeName()),
                        new AttributeDefinition().withAttributeType(ScalarAttributeType.N).withAttributeName(
                                config.getGeohashAttributeName()),
                        new AttributeDefinition().withAttributeType(ScalarAttributeType.S).withAttributeName(
                                config.getBuruMsgAttributeName()))
                .withLocalSecondaryIndexes(
                        new LocalSecondaryIndex()
                                .withIndexName(config.getGeohashIndexName())
                                .withKeySchema(
                                        new KeySchemaElement().withKeyType(KeyType.HASH).withAttributeName(
                                                config.getHashKeyAttributeName()),
                                        new KeySchemaElement().withKeyType(KeyType.RANGE).withAttributeName(
                                                config.getGeohashAttributeName()))
                                .withProjection(new Projection().withProjectionType(ProjectionType.ALL)));

        return createTableRequest;
    }
}

应该使用这些参数创建一个 table： HashKey RangeKey Geohash BuruMsg

和 range/hash 指数： Geohash 和 HashKey

但是我的 table 只用 Hash、Range 和 geohash 构造。它从不添加我的 BuruMsg 属性。

有什么想法吗？

编辑：

这是一张我试图在 AWS 控制台上将项目插入数据库的照片。

Answer 1

DynamoDB 表的架构仅指定散列键、可选范围键和可选索引键。该架构不涵盖未涉及键或索引的属性字段。我相信这就是为什么您的 BuruMsg 字段没有出现在管理控制台 UI 中的原因。你当然可以把数据放到那个字段，你会在管理控制台的项目列表中看到它。

但是定义属性对客户端软件很有帮助，例如Java和.NET ORM 库。你的代码可能没有问题。

Amazon DynamoDB table w/ Elastic Beanstalk 没有设置正确的参数

Amazon DynamoDB table w/ Elastic Beanstalk not setting up correct parameters

java

amazon-ec2

amazon-web-services

amazon-dynamodb