Amazon-Web-Services – AWS API Gateway stores JSON to DynamoDB

{
 "entryId":"abc ",
 "data":{
 "key1":"123",
 "key2":123
 }
}

{ 
 "TableName": "Events",
 "Item ": {
 "entryId": {
 "S": "abc"
 },
 "data": {
 "M": {
 "key1": {
 "S": "123"
 },
 "key2": {
 "N": "123"
 }
 }
 }
 }
}

"data": {"M" : {
 #foreach($key in $input.path('$.data').keySet())
 "$key": {"S": "$input.path('$.data').get($key)"}#if($foreach.hasNext),#end
 #end }
 } 
Can the type be obtained dynamically? 
I'm not sure how the API gateway mapping works.
 
Thank you for your help.
 
Loeb
 

I have a problem when trying to use the API gateway as a proxy for DynamoDB.

Basically, if I know to store The structure of the data, it will be very effective, but regardless of the payload structure, I cannot make it dynamic.

There are many websites explaining how to use the API gateway as a proxy for DynamoDB.
I found no explanation on how to store JSON objects.

Basically I send this JSON to my API endpoint:

{
 "entryId ":"abc",
 "data":{
 "key1":"123",
 "key2":123
 }
}

If I use the following template for mapping, the data will be correctly placed in my database

{ 
 "TableName": "Events",
 "Item": {
 "entryId": {
 "S": "abc"
 },
 "data": {
 "M": {
 "key1": {
 "S": "123"
 },
 "key2": {
 "N": "123"
 }
 }
 }
 }
}

However, I don’t know the structure of the "data", so I want the mapping to be dynamic. To better, I want to avoid any mapping.

I managed to make it dynamic, but all my entries are now of type String:

"data ": {"M": {
 #foreach($key in $input.path('$.data').keySet())
 "$key": {"S": "$ input.path('$.data').get($key)"}#if($foreach.hasNext),#end
 #end }
 }

Is it possible Dynamic acquisition type?
I'm not sure how the API gateway mapping works.

Thank you for your help.

Loeb

When inserting Dynamodb, you will not avoid some kind of mapping. I recommend using Lambda functions instead of service proxies to provide more control and flexibility when mapping data to the Dynamodb architecture.

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