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Add SDK v1 transformers, move v2 transformers to v2 package, bump transformer lib to 3.0.0 (#195)
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‎README.md

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<dependency>
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<groupId>com.amazonaws</groupId>
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<artifactId>aws-lambda-java-events-sdk-transformer</artifactId>
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<version>2.0.8</version>
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<version>3.0.0</version>
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</dependency>
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<dependency>
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<groupId>com.amazonaws</groupId>
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```groovy
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'com.amazonaws:aws-lambda-java-core:1.2.1'
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'com.amazonaws:aws-lambda-java-events:3.6.0'
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'com.amazonaws:aws-lambda-java-events-sdk-transformer:2.0.8'
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'com.amazonaws:aws-lambda-java-events-sdk-transformer:3.0.0'
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'com.amazonaws:aws-lambda-java-log4j2:1.2.0'
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'com.amazonaws:aws-lambda-java-runtime-interface-client:1.0.0'
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```
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```clojure
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[com.amazonaws/aws-lambda-java-core "1.2.1"]
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[com.amazonaws/aws-lambda-java-events "3.6.0"]
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[com.amazonaws/aws-lambda-java-events-sdk-transformer "2.0.8"]
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[com.amazonaws/aws-lambda-java-events-sdk-transformer "3.0.0"]
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[com.amazonaws/aws-lambda-java-log4j2 "1.2.0"]
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[com.amazonaws/aws-lambda-java-runtime-interface-client "1.0.0"]
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```
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```scala
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"com.amazonaws" % "aws-lambda-java-core" % "1.2.1"
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"com.amazonaws" % "aws-lambda-java-events" % "3.6.0"
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"com.amazonaws" % "aws-lambda-java-events-sdk-transformer" % "2.0.8"
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"com.amazonaws" % "aws-lambda-java-events-sdk-transformer" % "3.0.0"
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"com.amazonaws" % "aws-lambda-java-log4j2" % "1.2.0"
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"com.amazonaws" % "aws-lambda-java-runtime-interface-client" % "1.0.0"
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```

‎aws-lambda-java-events-sdk-transformer/README.md

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Provides helper classes/methods to use alongside `aws-lambda-java-events` in order to transform Lambda input event model
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objects into SDK-compatible output model objects
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(eg. DynamodbEvent to a List of records writable back to DynamoDB through the AWS DynamoDB SDK v2).
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(eg. DynamodbEvent to a List of records writable back to DynamoDB through the AWS DynamoDB SDK for Java v1 or v2).
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### Getting started
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<dependency>
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<groupId>com.amazonaws</groupId>
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<artifactId>aws-lambda-java-events-sdk-transformer</artifactId>
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<version>2.0.8</version>
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<version>3.0.0</version>
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</dependency>
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<dependency>
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<groupId>com.amazonaws</groupId>
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<dependency>
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<groupId>software.amazon.awssdk</groupId>
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<artifactId>dynamodb</artifactId>
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<version>2.13.18</version>
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<version>2.15.40</version>
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</dependency>
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</dependencies>
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```
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To use this library as a transformer to the AWS DynamoDB Java SDK v1, add the following dependency to your `pom.xml` file instead:
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```xml
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<dependencies>
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<dependency>
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<groupId>com.amazonaws</groupId>
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<artifactId>aws-java-sdk-dynamodb</artifactId>
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<version>1.11.914</version>
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</dependency>
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</dependencies>
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```
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### Example Usage
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#### SDK v2
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To convert a full `DynamodbEvent` object to an SDK v2 compatible `List<Record>`:
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```java
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import com.amazonaws.services.lambda.runtime.events.transformers.DynamodbEventTransformer;
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import com.amazonaws.services.lambda.runtime.events.transformers.v2.DynamodbEventTransformer;
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public class DDBEventProcessor implements RequestHandler<DynamodbEvent, String> {
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public String handleRequest(DynamodbEvent ddbEvent, Context context) {
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// Process input event
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List<Record> convertedRecords = DynamodbEventTransformer.toRecordsV2(ddbEvent);
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// Modify records as needed and write back to DynamoDB using the DynamoDB AWS SDK for Java 2.0
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}
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public String handleRequest(DynamodbEvent ddbEvent, Context context) {
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// Process input event
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List<Record> convertedRecords = DynamodbEventTransformer.toRecordsV2(ddbEvent);
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// Modify records as needed and write back to DynamoDB using the DynamoDB AWS SDK for Java 2.0
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}
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}
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```
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To convert a single `DynamodbEvent.DynamodbStreamRecord` object to an SDK v2 compatible `Record`:
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```java
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import com.amazonaws.services.lambda.runtime.events.transformers.dynamodb.DynamodbRecordTransformer;
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import com.amazonaws.services.lambda.runtime.events.transformers.v2.dynamodb.DynamodbRecordTransformer;
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public class MyClass {
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public void myMethod(DynamodbEvent.DynamodbStreamRecord record) {
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// ...
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Record convertedRecord = DynamodbRecordTransformer.toRecordV2(record);
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// ...
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}
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public void myMethod(DynamodbEvent.DynamodbStreamRecord record) {
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// ...
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Record convertedRecord = DynamodbRecordTransformer.toRecordV2(record);
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// ...
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}
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}
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```
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To convert a `StreamRecord` object originating from a `DynamodbEvent` to an SDK v2 compatible `StreamRecord`:
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```java
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import com.amazonaws.services.lambda.runtime.events.transformers.dynamodb.DynamodbStreamRecordTransformer;
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import com.amazonaws.services.lambda.runtime.events.transformers.v2.dynamodb.DynamodbStreamRecordTransformer;
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public class MyClass {
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public void myMethod(StreamRecord streamRecord) {
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// ...
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software.amazon.awssdk.services.dynamodb.model.StreamRecord convertedStreamRecord =
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DynamodbStreamRecordTransformer.toStreamRecordV2(streamRecord);
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// ...
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}
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public void myMethod(StreamRecord streamRecord) {
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// ...
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software.amazon.awssdk.services.dynamodb.model.StreamRecord convertedStreamRecord =
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DynamodbStreamRecordTransformer.toStreamRecordV2(streamRecord);
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// ...
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}
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}
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```
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To convert an `AttributeValue` object originating from a `DynamodbEvent` to an SDK v2 compatible `AttributeValue`:
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```java
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import com.amazonaws.services.lambda.runtime.events.transformers.dynamodb.DynamodbAttributeValueTransformer;
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import com.amazonaws.services.lambda.runtime.events.transformers.v2.dynamodb.DynamodbAttributeValueTransformer;
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public class MyClass {
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public void myMethod(AttributeValue attributeValue) {
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// ...
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software.amazon.awssdk.services.dynamodb.model.AttributeValue convertedAttributeValue =
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DynamodbAttributeValueTransformer.toAttributeValueV2(attributeValue);
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// ...
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}
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public void myMethod(AttributeValue attributeValue) {
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// ...
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software.amazon.awssdk.services.dynamodb.model.AttributeValue convertedAttributeValue =
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DynamodbAttributeValueTransformer.toAttributeValueV2(attributeValue);
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// ...
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}
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}
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```
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To convert an `Identity` object originating from a `DynamodbEvent` to an SDK v2 compatible `Identity`:
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```java
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import com.amazonaws.services.lambda.runtime.events.transformers.v2.dynamodb.DynamodbIdentityTransformer;
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public class MyClass {
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public void myMethod(Identity identity) {
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// ...
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software.amazon.awssdk.services.dynamodb.model.Identity convertedIdentity =
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DynamodbIdentityTransformer.toIdentityV2(identity);
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// ...
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}
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}
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```
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#### SDK v1
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To convert a full `DynamodbEvent` object to an SDK v1 compatible `List<Record>`:
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```java
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import com.amazonaws.services.lambda.runtime.events.transformers.v1.DynamodbEventTransformer;
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public class DDBEventProcessor implements RequestHandler<DynamodbEvent, String> {
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public String handleRequest(DynamodbEvent ddbEvent, Context context) {
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// Process input event
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List<Record> convertedRecords = DynamodbEventTransformer.toRecordsV1(ddbEvent);
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// Modify records as needed and write back to DynamoDB using the DynamoDB AWS SDK for Java 2.0
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}
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}
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```
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To convert a single `DynamodbEvent.DynamodbStreamRecord` object to an SDK v1 compatible `Record`:
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```java
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import com.amazonaws.services.lambda.runtime.events.transformers.v1.dynamodb.DynamodbRecordTransformer;
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public class MyClass {
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public void myMethod(DynamodbEvent.DynamodbStreamRecord record) {
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// ...
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Record convertedRecord = DynamodbRecordTransformer.toRecordV1(record);
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// ...
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}
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}
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```
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To convert a `StreamRecord` object originating from a `DynamodbEvent` to an SDK v1 compatible `StreamRecord`:
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```java
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import com.amazonaws.services.lambda.runtime.events.transformers.v1.dynamodb.DynamodbStreamRecordTransformer;
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public class MyClass {
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public void myMethod(StreamRecord streamRecord) {
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// ...
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com.amazonaws.services.dynamodbv2.model.StreamRecord convertedStreamRecord =
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DynamodbStreamRecordTransformer.toStreamRecordV1(streamRecord);
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// ...
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}
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}
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```
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To convert an `AttributeValue` object originating from a `DynamodbEvent` to an SDK v1 compatible `AttributeValue`:
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```java
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import com.amazonaws.services.lambda.runtime.events.transformers.v1.dynamodb.DynamodbAttributeValueTransformer;
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public class MyClass {
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public void myMethod(AttributeValue attributeValue) {
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// ...
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com.amazonaws.services.dynamodbv2.model.AttributeValue convertedAttributeValue =
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DynamodbAttributeValueTransformer.toAttributeValueV1(attributeValue);
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// ...
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}
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}
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```
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To convert an `Identity` object originating from a `DynamodbEvent` to an SDK v1 compatible `Identity`:
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```java
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import com.amazonaws.services.lambda.runtime.events.transformers.dynamodb.DynamodbIdentityTransformer;
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import com.amazonaws.services.lambda.runtime.events.transformers.v1.dynamodb.DynamodbIdentityTransformer;
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public class MyClass {
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public void myMethod(Identity identity) {
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// ...
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software.amazon.awssdk.services.dynamodb.model.Identity convertedIdentity =
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DynamodbIdentityTransformer.toIdentityV2(identity);
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// ...
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}
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public void myMethod(Identity identity) {
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// ...
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com.amazonaws.services.dynamodbv2.model.Identity convertedIdentity =
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DynamodbIdentityTransformer.toIdentityV1(identity);
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// ...
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}
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}
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```

‎aws-lambda-java-events-sdk-transformer/RELEASE.CHANGELOG.md

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### Upcoming
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`3.0.0`:
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- Added AWS SDK V1 transformers for `DynamodbEvent` in `aws-lambda-java-events` versions `3.0.0` and up
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- Moved existing SDK v2 transformers into `v2` package (from `com.amazonaws.services.lambda.runtime.events.transformers` to `com.amazonaws.services.lambda.runtime.events.transformers.v2`)
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- Bumped `software.amazon.awssdk:dynamodb` to version `2.15.40`
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### November 06, 2020
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`2.0.8`:
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- Bumped `aws-lambda-java-events` to version `3.6.0`

‎aws-lambda-java-events-sdk-transformer/pom.xml

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<groupId>com.amazonaws</groupId>
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<artifactId>aws-lambda-java-events-sdk-transformer</artifactId>
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<version>2.0.8</version>
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<version>3.0.0</version>
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<packaging>jar</packaging>
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<name>AWS Lambda Java Events SDK Transformer Library</name>
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<description>
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Provides helper classes/methods to use alongside aws-lambda-java-events in order to transform Lambda input event model
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objects into SDK-compatible output model objects (eg. DynamodbEvent to a List of records writable back to DynamoDB
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through the AWS DynamoDB SDK v2)
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through the AWS DynamoDB SDK for Java v1 or v2)
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</description>
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<url>https://aws.amazon.com/lambda/</url>
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<licenses>
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<properties>
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<maven.compiler.source>1.8</maven.compiler.source>
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<maven.compiler.target>1.8</maven.compiler.target>
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<sdk.v1.version>1.11.914</sdk.v1.version>
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<sdk.v2.version>2.15.40</sdk.v2.version>
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</properties>
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<distributionManagement>
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<dependency>
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<groupId>software.amazon.awssdk</groupId>
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<artifactId>dynamodb</artifactId>
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<version>2.13.18</version>
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<version>${sdk.v2.version}</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>com.amazonaws</groupId>
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<artifactId>aws-java-sdk-dynamodb</artifactId>
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<version>${sdk.v1.version}</version>
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<scope>provided</scope>
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</dependency>
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<dependency>

‎aws-lambda-java-events-sdk-transformer/src/main/java/com/amazonaws/services/lambda/runtime/events/transformers/v1/DynamodbEventTransformer.java

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package com.amazonaws.services.lambda.runtime.events.transformers.v1;
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import com.amazonaws.services.dynamodbv2.model.Record;
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import com.amazonaws.services.lambda.runtime.events.DynamodbEvent;
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import com.amazonaws.services.lambda.runtime.events.transformers.v1.dynamodb.DynamodbRecordTransformer;
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import java.util.List;
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import java.util.Objects;
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import java.util.stream.Collectors;
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public class DynamodbEventTransformer {
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public static List<Record> toRecordsV1(final DynamodbEvent dynamodbEvent) {
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return dynamodbEvent
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.getRecords()
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.stream()
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.filter(record -> !Objects.isNull(record))
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.map(DynamodbRecordTransformer::toRecordV1)
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.collect(Collectors.toList());
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}
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}

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