Your achievements

Level 1

0% to

Level 2

Tip /
Sign in

Sign in to Community

to gain points, level up, and earn exciting badges like the new
Bedrock Mission!

Learn more

View all

Sign in to view all badges

Adobe Summit 2023 [19th to 23rd March, Las Vegas and Virtual] | Complete AEM Session & Lab list

S3 Blob storage Hashing

Avatar

Level 2

I am trying to figure out how to map a  S3 bucket file to an asset.

If I have a file on my PC which I know exists in AEM with S3 Segmented Storage how can i find the file directly in S3?

I tried this without any success:

$ shasum -a256 ~/Downloads/asdf.jpg

08550272769f2ded3cd8f3da8d98cad0a5eb8316fa5662b763dca8c71ca055f8  ~/Downloads/asdf.jpg

$ aws s3 ls s3://bucketname/08550272769f2ded3cd8f3da8d98cad0a5eb8316fa5662b763dca8c71ca055f8

In case its different I am trying to do this in both AEM 6.2 and 6.5.

Thanks in advance

2 Replies

Avatar

Level 2

I ended up raising a Daycare ticket along with doing some studying and have a better understanding.

I have found that there is a prop on the asset dam:sha1 which contains a hash which in 6.5 i confirmed i can determine via running this on an asset $ shasum -a256 ~/Downloads/asdf.jpg.   I never figured out the algorithm for 6.2 but if i look in the jcr after uploading I can now map this to a file and the bucket the same way.

If you have an asset with eg hash 08550272769f2ded3cd8f3da8d98cad0a5eb8316fa5662b763dca8c71ca055f8 then you can find this on the filesystem in

repository/datastore/08/55/02/08550272769f2ded3cd8f3da8d98cad0a5eb8316fa5662b763dca8c71ca055f8

I can then map this asset to my bucket

aws s3 ls s3://mybucket/0855-0272769f2ded3cd8f3da8d98cad0a5eb8316fa5662b763dca8c71ca055f8

See how the file path maps to the bucket filename and such.

I confused myself a lot switching between 6.2 and 6.5 not sure exactly what the differences are but I now know what I needed to know to solve my problem hope this helps someone else.

Feel free to add on I like learning more.