Ensure that DynamodbEvent can be properly deserialized in Lambda

Fixes: #14513

Author: geoand

extensions/amazon-lambda/common-runtime/src/main/java/io/quarkus/amazon/lambda/runtime/AmazonLambdaMapperRecorder.java

@@ -24,7 +24,8 @@ public void initObjectMapper() {
         objectMapper = getObjectMapper()
                 .configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false)
                 .configure(MapperFeature.ACCEPT_CASE_INSENSITIVE_PROPERTIES, true)
-                .registerModule(new JodaModule());
+                .registerModule(new JodaModule())
+                .registerModule(new DateModule());
     }
 
     public void initContextReaders() {

extensions/amazon-lambda/common-runtime/src/main/java/io/quarkus/amazon/lambda/runtime/DateModule.java

@@ -0,0 +1,66 @@
+/* Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved. */
+
+package io.quarkus.amazon.lambda.runtime;
+
+import java.io.IOException;
+import java.util.Date;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.core.json.PackageVersion;
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.JsonDeserializer;
+import com.fasterxml.jackson.databind.JsonSerializer;
+import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+
+/**
+ * Copied from: <a href=
+ * "https://raw.githubusercontent.com/aws/aws-lambda-java-libs/95dc035b2a3200be04eaa48cef6053404250e547/aws-lambda-java-serialization/src/main/java/com/amazonaws/services/lambda/runtime/serialization/events/modules/DateModule.java">here</a>
+ *
+ * The AWS API represents a date as a double, which specifies the fractional
+ * number of seconds since the epoch. Java's Date, however, represents a date as
+ * a long, which specifies the number of milliseconds since the epoch. This
+ * class is used to translate between these two formats.
+ *
+ * This class is copied from LambdaEventBridgeservice
+ * com.amazon.aws.lambda.stream.ddb.DateModule
+ */
+class DateModule extends SimpleModule {
+    private static final long serialVersionUID = 1L;
+
+    public static final class Serializer extends JsonSerializer<Date> {
+        @Override
+        public void serialize(Date date, JsonGenerator generator, SerializerProvider serializers) throws IOException {
+            if (date != null) {
+                generator.writeNumber(millisToSeconds(date.getTime()));
+            }
+        }
+    }
+
+    public static final class Deserializer extends JsonDeserializer<Date> {
+        @Override
+        public Date deserialize(JsonParser parser, DeserializationContext context) throws IOException {
+            double dateSeconds = parser.getValueAsDouble();
+            if (dateSeconds == 0.0) {
+                return null;
+            } else {
+                return new Date((long) secondsToMillis(dateSeconds));
+            }
+        }
+    }
+
+    private static double millisToSeconds(double millis) {
+        return millis / 1000.0;
+    }
+
+    private static double secondsToMillis(double seconds) {
+        return seconds * 1000.0;
+    }
+
+    public DateModule() {
+        super(PackageVersion.VERSION);
+        addSerializer(Date.class, new Serializer());
+        addDeserializer(Date.class, new Deserializer());
+    }
+}