I need to provide a solution through Lambda to notifies an SNS topic when a file is received outside of a specific time in S3. Files are received in S3 at a specific time (4 am - 5 am EST). Do you have any custom solution or code I can use in my Lambda function to send out an SNS notification when the files are received after 5 am?
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1) Configure an S3 event notification towards a Lambda function and in that Lambda check the time of the PUT event. If the time is not compliant, make the Lambda publish to your SNS topic.
2) Configure a scheduled event in CloudWatch that periodically invokes your Lambda (e.g. every hour or every day) and then make the Lambda check for any files that have been uploaded at a non-compliant time.
Option 1 is more real-time but might generate a lot of noise and cost in the case of many files. Option 2 has some lag but you can use it to build a summary about all the files that have been uploaded quite easily.
What do you think?
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Great insight Frank. Thanks.
I need to provide a solution through Lambda to notifies an SNS topic when a file is received outside of a specific time in S3. Files are received in S3 at a specific time (4 am - 5 am EST). Do you have any custom solution or code I can use in my Lambda function to send out an SNS notification when the files are received after 5 am?
Thanks.
Hi!
I see two options:
1) Configure an S3 event notification towards a Lambda function and in that Lambda check the time of the PUT event. If the time is not compliant, make the Lambda publish to your SNS topic.
2) Configure a scheduled event in CloudWatch that periodically invokes your Lambda (e.g. every hour or every day) and then make the Lambda check for any files that have been uploaded at a non-compliant time.
Option 1 is more real-time but might generate a lot of noise and cost in the case of many files. Option 2 has some lag but you can use it to build a summary about all the files that have been uploaded quite easily.
What do you think?