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Why can I send AWS S3 bucket events to only one AWS lambda?


Why can I send AWS S3 bucket events to only one AWS lambda?

By : Mathias Henry
Date : November 22 2020, 07:01 PM
wish of those help It is not supported. And agree that the error message is not good.
The reason, I think is just that they want to promote another practice: Fanout S3 Event Notifications to Multiple Endpoints | AWS Compute Blog
code :


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AWS Lambda - events solely on root of S3 bucket

AWS Lambda - events solely on root of S3 bucket


By : user3526447
Date : March 29 2020, 07:55 AM
wish helps you It doesn't look like you can configure the S3 notification to fire only on certain paths, so the best option is to implement this logic in your Lambda function:
code :
var key = event.Records[0].s3.object.key;
if (key.indexOf('/') === -1) {
    // No slash in key name, must be in root of bucket, do stuff here
}
Moving S3 bucket data to another bucket in real time - AWS Lambda?

Moving S3 bucket data to another bucket in real time - AWS Lambda?


By : user1656943
Date : March 29 2020, 07:55 AM
I hope this helps you . Anyone else with a same requirement, please refer the below post as well:
AWS issue
How to properly setup an IAM execution role and a bucket policy for getting lambda writing to a public read S3 bucket?

How to properly setup an IAM execution role and a bucket policy for getting lambda writing to a public read S3 bucket?


By : Navi Aulakh
Date : March 29 2020, 07:55 AM
wish help you to fix your issue So in my case what I was missing:
I had to include getObjectTagging and putObjectTagging actions.
code :
- Effect: "Allow"
  Action:
    - "s3:ListBucket"
  Resource:
    - Fn::Join:
        - ""
        - - "arn:aws:s3:::"
          - Ref: StaticSiteBucket
- Effect: "Allow"
  Action:
    - "s3:GetObject"
    - "s3:PutObject"
    - "s3:DeleteObject"
    - "s3:GetObjectTagging"
    - "s3:PutObjectTagging"
  Resource:
    - Fn::Join:
        - ""
        - - "arn:aws:s3:::"
          - Ref: StaticSiteBucket
          - "/*"
How to act on s3 bucket ACLs using bucket tags in Lambda function

How to act on s3 bucket ACLs using bucket tags in Lambda function


By : Eric Hall
Date : March 29 2020, 07:55 AM
help you fix your problem I was able to get some more information from a co-worker, and this turns out that I needed to define the tags with ['Key'] and ['Value']:
code :
def public_bucket(bucketname):

    try:
        bucket_tagging = s3.get_bucket_tagging(Bucket=bucketname)
        tag_set = bucket_tagging['TagSet']
        for tag in tag_set:
            if (tag['Key'] == "public-allowed"):
                if (tag['Value'] == "True"):
                    return True
                    break
    except Exception, e:
        print(e.message)
AWS Lambda Python script to iterate over S3 bucket and copy daily files to another S3 bucket

AWS Lambda Python script to iterate over S3 bucket and copy daily files to another S3 bucket


By : Eric Tappan
Date : March 29 2020, 07:55 AM
I wish this helpful for you You can extract the date string portion of the filename (ideally by splitting the string on '_') and pass it into a handling function such as:
code :
from datetime import datetime as dt

def parse_date(date_string):
    form = "%y%m%d%H%M%S"
    date = dt.strptime(date_string, form)

    #dt.utcnow() will return a UTC representation of the current time
    diff = dt.now() - date

    if diff.days >= 1:
        return False

    return True

#False
print(parse_date("180301000014"))
#True as of the date of this post
print(parse_date("180606000014"))
def by_target_date(date_string, target_date):
    form = "%y%m%d%H%M%S"
    date = dt.strptime(date_string, form)

    if date > target_date:
        #Check that days match and that month and year are the same
        if date.day == target_date.day and (date - target_date).days <= 1:
            return do_things()

    if date.day == target_date.day and (target_date - date).days <= 1:
        return do_things()
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