node.js - 无法在 Node 中使用 GeoDataManager 查询 dynamoDb 数据

Question

我正在尝试遵循此处给出的 Amazon DynamoDB 地理库的非常基本的教程 https://www.npmjs.com/package/dynamodb-geo .即使按照链接中提到的步骤进行操作，我的 myGeoTableManager.queryRadius() 调用也没有给我任何结果。以下是我遵循的步骤。

我用下面的脚本创建了 dynamoDB 表

require("dotenv").config();

var AWS= require('aws-sdk');

AWS.config.update({accessKeyId: process.env.accessKeyId, secretAccessKey: process.env.secretAccessKey, region: "us-east-1"});
const ddb = new AWS.DynamoDB();

const ddbGeo = require('dynamodb-geo');

const config = new ddbGeo.GeoDataManagerConfiguration(ddb, 'locationData');
config.hashKeyLength = 5;

const createTableInput = ddbGeo.GeoTableUtil.getCreateTableRequest(config);
 
// Tweak the schema as desired
createTableInput.ProvisionedThroughput.ReadCapacityUnits = 5;
 
console.log('Creating table with schema:');
console.dir(createTableInput, { depth: null });
 
// Create the table
ddb.createTable(createTableInput).promise()
    // Wait for it to become ready
    .then(function () { return ddb.waitFor('tableExists', { TableName: 'locationData' }).promise() })
    .then(function () { console.log('Table created and ready!') });

然后我使用以下脚本在 dynamoDB 中插入和查询数据。

require("dotenv").config();

var AWS= require('aws-sdk');

AWS.config.update({accessKeyId: process.env.accessKeyId, secretAccessKey: process.env.secretAccessKey, region: "us-east-1"});
const ddb = new AWS.DynamoDB();

const ddbGeo = require('dynamodb-geo');

const config = new ddbGeo.GeoDataManagerConfiguration(ddb, 'locationData');
config.hashKeyLength = 5;

const myGeoTableManager = new ddbGeo.GeoDataManager(config);

myGeoTableManager.putPoint({
    RangeKeyValue: { S: '1234' }, 
    GeoPoint: { 
        latitude: 28.749472,
        longitude: 77.056534
    },
    PutItemInput: { 
        Item: { 
            country: { S: 'country1' }, 
            capital: { S: 'capital1' }
        },
    }
}).promise()
.then(function() { console.log('Insert Done!') });

myGeoTableManager.putPoint({
    RangeKeyValue: { S: '5678' }, 
    GeoPoint: { 
        latitude: 28.749999,
        longitude: 77.056999
    },
    PutItemInput: { 
        Item: { 
            country: { S: 'country2' }, 
            capital: { S: 'capital2' }
        },
    }
}).promise()
.then(function() { console.log('Insert Done!') });

myGeoTableManager.queryRadius({
    RadiusInMeter: 100000,
    CenterPoint: {
        latitude: 28.749888,
        longitude: 77.056888 
    }
  }).then((locations) => {
    console.log(locations);
  });

即使纬度和经度完全相同，myGeoTableManager.queryRadius() 也会给我空响应。

Answer 1

有更新版本 https://github.com/renet/dynamodb-geo-v3 可用，支持 AWS 3.* 版本。