SNS subscribe HTTPS endpoint

Question

I'm attempting to integrate a Google Chat webhook with the SNS https protocol but am having difficulty.

command1:

aws sns subscribe --topic-arn arn:aws:sns:us-east-1:123456789012:MyTopic --protocol https --notification-endpoint 'https://chat.googleapis.com/v1/spaces/AAAAaikfLEo/messages?key=&token='

output:

{
    "SubscriptionArn": "pending confirmation"
}

Here are the cloud monitoring logs.

{
    "notification": {
        "messageId": "0b72f18b-4267-4766-9196-58sckdsjwswf",
        "topicArn": "arn:aws:sns:us-east-1:123456789012:MyTopic",
        "timestamp": "2023-03-11 05:57:32.278"
    },
    "delivery": {
        "deliveryId": "0b72f18b-4267-4766-9196-58sckdsjwswf",
        "destination": "https://chat.googleapis.com/v1/spaces/AAAAaikfLEo/messages?key=&token=",
        "providerResponse": "Bad Request",
        "dwellTimeMs": 62,
        "statusCode": 400
    },
    "status": "SUCCESS"
}

I tried other commands as well, but they were ineffective.

command2:

aws sns subscribe \
 --topic-arn arn:aws:sns:us-east-1:123456789012:MyTopic \
 --protocol https \
 --notification-endpoint 'https://chat.googleapis.com/v1/spaces/AAAAaikfLEo/messages?key=&token=' \
 --attributes '{"http":{"defaultContentEncoding":"UTF-8","headers":{"Content-Type":"application/json"}}}'

error:

Parameter validation failed:
Invalid type for parameter Attributes.http, value: OrderedDict([('defaultContentEncoding', 'UTF-8'), ('headers', OrderedDict([('Content-Type', 'application/json')]))]), type: , valid types:

not greeting the error in command1 but receiving no response
However, the status code in the logs is 400, so I'm not sure what the error is; it could be about the header or something else.

Answer

I think your first attempt was successful. However, you need to get the token that was sent to the URL and run the confirm-subscription. That might not be available to you.

You can also set this up following the instructions here: How do I use webhooks to publish Amazon SNS messages to Amazon Chime, Slack, or Microsoft Teams?.

You can also set this up following the instructions here: [How do I use webhooks to publish Amazon SNS messages to Amazon Chime, Slack, or Microsoft Teams?](https://aws.amazon.com/premiumsupport/knowledge-center/sns-lambda-webhooks-chime-slack-teams/).

SNS subscribe HTTPS endpoint

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