Converting DynamoDB json sqs message to normal json java

Question

We have an upstream client using "Dynamo ->Lambda -> SNS -> SQS" architecture to publish data. We, as a sqs consumer, need to process the message. The SQS message is in the raw dynamo record format like below

{"key1": {"m":{"key2":{"s":"val2"},"key3":{"s":"val3"}}}}

I want to convert the dynamo json to normal json so that I can use json de-serializer to get a POJO. I saw similar questions on SO but they start either with a DynamoDbRecord or Map<String, Attribute> to get normal JSON. I only have the string in SQS message. I found the Javascript SDK but nothing similar in JAVA.

Are there simple built in ways to do this or would I need to parse the string using "S", "N" etc. to get normal json?

Thanks

which libray are you using for json processing?

Vishal Pawar
– Vishal Pawar

2020-07-30 06:09:41 +00:00
Commented Jul 30, 2020 at 6:09 — Vishal Pawar
– Vishal Pawar, Commented Jul 30, 2020 at 6:09
I have tried Jackson ObjectMapper and Gson.

ezile
– ezile

2020-07-30 11:37:11 +00:00
Commented Jul 30, 2020 at 11:37 — ezile
– ezile, Commented Jul 30, 2020 at 11:37

ashawley · Accepted Answer · 2020-07-31 03:19:34Z

0

There is the same DynamoDB document Item in the Java SDK that can take a string:

import com.amazonaws.services.dynamodbv2.document.Item;

Item item = Item.fromJSON(json);

Presumably, it uses Jackson underneath the covers.

answered Jul 31, 2020 at 3:19

ashawley

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