Send Object as sns message attribute

Question

I'd like to publish a message to my sns topic. \
I'm using js "aws-sdk/client-sns" with the `snsClient.send(new PublishCommand(params)`. \
Subscribed to my sns topic there is a sqs queue with a filter sub policy. \
The issue is with the message attributes, I want to send as value a json object as in this example: \
`MessageAttributes: {
filter: {
      DataType: 'String',
      StringValue: "filter"
    } },
object: {
      DataType: 'String',
      StringValue: JSON.stringify( object )
    } }` \
the message never get to the queue and fails under "NumberOfNotificationsFilteredOut" or "NumberOfNotificationsFilteredOut-InvalidAttributes". \
Instead, if the queue does not have a filter sub policy or I set the object as `DataType: 'String.Array'`the message arrive without any problem, is this a bug? How should I set my message attribute if I want to send an Object ? Thanks.

Answer

Amazon SNS compares policy attributes only to message attributes that have the following data types:

1. String
2. String.Array
3. Number

for more details see:
https://docs.aws.amazon.com/sns/latest/dg/subscription-filter-policy-constraints.html

Send Object as sns message attribute

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