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Add the non-Spring DynamoDB samples in the AWS module

This commit is contained in:
Diaz Novandi 2018-03-27 07:26:42 +02:00
parent c6c7ffbcc1
commit 1a81c450e0
7 changed files with 303 additions and 0 deletions
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38
aws/pom.xml
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@ -22,6 +22,8 @@
<junit.version>4.12</junit.version>
<mockito-core.version>2.8.9</mockito-core.version>
<assertj-core.version>3.8.0</assertj-core.version>
<dynamodblocal.version>1.11.86</dynamodblocal.version>
<dynamodblocal.repository.url>https://s3-us-west-2.amazonaws.com/dynamodb-local/release</dynamodblocal.repository.url>
</properties>
<dependencies>
@ -88,6 +90,13 @@
<artifactId>gson</artifactId>
<version>${gson.version}</version>
</dependency>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>DynamoDBLocal</artifactId>
<version>${dynamodblocal.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
@ -108,6 +117,35 @@
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.10</version>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>test-compile</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<includeScope>test</includeScope>
<includeTypes>so,dll,dylib</includeTypes>
<outputDirectory>${project.basedir}/native-libs</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>dynamodb-local</id>
<name>DynamoDB Local Release Repository</name>
<url>${dynamodblocal.repository.url}</url>
</repository>
</repositories>
</project>

51
aws/src/main/java/com/baeldung/dynamodb/entity/ProductInfo.java Normal file
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@ -0,0 +1,51 @@
package com.baeldung.dynamodb.entity;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBAttribute;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBAutoGeneratedKey;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBHashKey;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBTable;
@DynamoDBTable(tableName = "ProductInfo")
public class ProductInfo {
private String id;
private String msrp;
private String cost;
public ProductInfo() {
}
public ProductInfo(String cost, String msrp) {
this.msrp = msrp;
this.cost = cost;
}
@DynamoDBHashKey
@DynamoDBAutoGeneratedKey
public String getId() {
return id;
}
@DynamoDBAttribute
public String getMsrp() {
return msrp;
}
@DynamoDBAttribute
public String getCost() {
return cost;
}
public void setId(String id) {
this.id = id;
}
public void setMsrp(String msrp) {
this.msrp = msrp;
}
public void setCost(String cost) {
this.cost = cost;
}
}

49
aws/src/main/java/com/baeldung/dynamodb/repository/AbstractRepository.java Normal file
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@ -0,0 +1,49 @@
package com.baeldung.dynamodb.repository;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBScanExpression;
import java.io.Serializable;
import java.lang.reflect.ParameterizedType;
import java.util.List;
public abstract class AbstractRepository<T, ID extends Serializable> {
protected DynamoDBMapper mapper;
protected Class<T> entityClass;
protected AbstractRepository() {
ParameterizedType genericSuperclass = (ParameterizedType) getClass().getGenericSuperclass();
// This entityClass refers to the actual entity class in the subclass declaration.
// For instance, ProductInfoDAO extends AbstractDAO<ProductInfo, String>
// In this case entityClass = ProductInfo, and ID is String type
// which refers to the ProductInfo's partition key string value
this.entityClass = (Class<T>) genericSuperclass.getActualTypeArguments()[0];
}
public void save(T t) {
mapper.save(t);
}
public T findOne(ID id) {
return mapper.load(entityClass, id);
}
/**
* <strong>WARNING:</strong> It is not recommended to perform full table scan
* targeting the real production environment.
*
* @return All items
*/
public List<T> findAll() {
DynamoDBScanExpression scanExpression = new DynamoDBScanExpression();
return mapper.scan(entityClass, scanExpression);
}
public void setMapper(DynamoDBMapper dynamoDBMapper) {
this.mapper = dynamoDBMapper;
}
}

6
aws/src/main/java/com/baeldung/dynamodb/repository/ProductInfoRepository.java Normal file
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@ -0,0 +1,6 @@
package com.baeldung.dynamodb.repository;
import com.baeldung.dynamodb.entity.ProductInfo;
public class ProductInfoRepository extends AbstractRepository<ProductInfo, String> {
}

121
aws/src/test/java/com/baeldung/dynamodb/ProductInfoRepositoryIntegrationTest.java Normal file
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@ -0,0 +1,121 @@
package com.baeldung.dynamodb;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.services.dynamodbv2.AmazonDynamoDB;
import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper;
import com.amazonaws.services.dynamodbv2.model.CreateTableRequest;
import com.amazonaws.services.dynamodbv2.model.ProvisionedThroughput;
import com.amazonaws.services.dynamodbv2.model.ResourceInUseException;
import com.baeldung.dynamodb.entity.ProductInfo;
import com.baeldung.dynamodb.repository.ProductInfoRepository;
import com.baeldung.dynamodb.rule.LocalDbCreationRule;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.ClassRule;
import org.junit.Test;
import java.io.IOException;
import java.io.InputStream;
import java.net.URISyntaxException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
import java.util.Optional;
import java.util.Properties;
import static org.hamcrest.Matchers.greaterThan;
import static org.hamcrest.core.Is.is;
import static org.hamcrest.core.IsEqual.equalTo;
import static org.junit.Assert.assertThat;
public class ProductInfoRepositoryIntegrationTest {
@ClassRule
public static LocalDbCreationRule dynamoDB = new LocalDbCreationRule();
private static DynamoDBMapper dynamoDBMapper;
private static AmazonDynamoDB amazonDynamoDB;
private ProductInfoRepository repository;
private static final String DYNAMODB_ENDPOINT = "amazon.dynamodb.endpoint";
private static final String AWS_ACCESSKEY = "amazon.aws.accesskey";
private static final String AWS_SECRETKEY = "amazon.aws.secretkey";
private static final String EXPECTED_COST = "20";
private static final String EXPECTED_PRICE = "50";
@BeforeClass
public static void setupClass() {
Properties testProperties = loadFromFileInClasspath("test.properties")
.filter(properties -> !isEmpty(properties.getProperty(AWS_ACCESSKEY)))
.filter(properties -> !isEmpty(properties.getProperty(AWS_SECRETKEY)))
.filter(properties -> !isEmpty(properties.getProperty(DYNAMODB_ENDPOINT)))
.orElseThrow(() -> new RuntimeException("Unable to get all of the required test property values"));
String amazonAWSAccessKey = testProperties.getProperty(AWS_ACCESSKEY);
String amazonAWSSecretKey = testProperties.getProperty(AWS_SECRETKEY);
String amazonDynamoDBEndpoint = testProperties.getProperty(DYNAMODB_ENDPOINT);
amazonDynamoDB = new AmazonDynamoDBClient(new BasicAWSCredentials(amazonAWSAccessKey, amazonAWSSecretKey));
amazonDynamoDB.setEndpoint(amazonDynamoDBEndpoint);
dynamoDBMapper = new DynamoDBMapper(amazonDynamoDB);
}
@Before
public void setup() {
try {
repository = new ProductInfoRepository();
repository.setMapper(dynamoDBMapper);
CreateTableRequest tableRequest = dynamoDBMapper.generateCreateTableRequest(ProductInfo.class);
tableRequest.setProvisionedThroughput(new ProvisionedThroughput(1L, 1L));
amazonDynamoDB.createTable(tableRequest);
} catch (ResourceInUseException e) {
// Do nothing, table already created
}
// TODO How to handle different environments. i.e. AVOID deleting all entries in ProductInfo on table
dynamoDBMapper.batchDelete((List<ProductInfo>) repository.findAll());
}
@Test
public void givenItemWithExpectedCost_whenRunFindAll_thenItemIsFound() {
ProductInfo productInfo = new ProductInfo(EXPECTED_COST, EXPECTED_PRICE);
repository.save(productInfo);
List<ProductInfo> result = (List<ProductInfo>) repository.findAll();
assertThat(result.size(), is(greaterThan(0)));
assertThat(result.get(0).getCost(), is(equalTo(EXPECTED_COST)));
}
private static boolean isEmpty(String inputString) {
return inputString == null || "".equals(inputString);
}
private static Optional<Properties> loadFromFileInClasspath(String fileName) {
InputStream stream = null;
try {
Properties config = new Properties();
Path configLocation = Paths.get(ClassLoader.getSystemResource(fileName).toURI());
stream = Files.newInputStream(configLocation);
config.load(stream);
return Optional.of(config);
} catch (Exception e) {
return Optional.empty();
} finally {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
}
}
}
}
}

35
aws/src/test/java/com/baeldung/dynamodb/rule/LocalDbCreationRule.java Normal file
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@ -0,0 +1,35 @@
package com.baeldung.dynamodb.rule;
import com.amazonaws.services.dynamodbv2.local.main.ServerRunner;
import com.amazonaws.services.dynamodbv2.local.server.DynamoDBProxyServer;
import org.junit.rules.ExternalResource;
public class LocalDbCreationRule extends ExternalResource {
protected DynamoDBProxyServer server;
public LocalDbCreationRule() {
System.setProperty("sqlite4java.library.path", "native-libs");
}
@Override
protected void before() throws Exception {
String port = "8000";
this.server = ServerRunner.createServerFromCommandLineArgs(new String[]{"-inMemory", "-port", port});
server.start();
}
@Override
protected void after() {
this.stopUnchecked(server);
}
protected void stopUnchecked(DynamoDBProxyServer dynamoDbServer) {
try {
dynamoDbServer.stop();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}

3
aws/src/test/resources/test.properties Normal file
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@ -0,0 +1,3 @@
amazon.dynamodb.endpoint=http://localhost:8000/
amazon.aws.accesskey=key
amazon.aws.secretkey=key2