AWS Lambda: python-oracledb thin mode cannot be used because the cryptography package is not installed

[edgar-slalom]

Creating a new thread on this particular issue because the error and issue are deceiving.

The installation instructions say: python -m pip install oracledb

This I've done and I packaged this into a lambda layer. I am able to

import oracledb
connection = oracledb.connect(user="me",
                              password="passw1",
                              dsn="myhost_and_service")

And this is where I get the error. Below you can see the cryptography folder/package is installed just like oracledb one.

Why do I get the error? what must I do to "install" and "configure" the cryptography package? Is there something that needs to be added to the instructions ?

[cjbj]

Can any Lambda users help @github4es here?

[anthony-tuininga]

I presume you are getting this error?

DPY-3016: python-oracledb thin mode cannot be used because the cryptography package is not installed

This occurs if the following imports fail:

from cryptography import x509
from cryptography.hazmat.primitives import hashes, serialization
from cryptography.hazmat.primitives.ciphers import algorithms, modes, Cipher
from cryptography.hazmat.primitives.asymmetric import padding
from cryptography.hazmat.primitives.kdf import pbkdf2

You could try putting these imports directly in your main script so you can see which one it is complaining about. That may shed some light on the matter?

[ybindu]

@anthony-tuininga This is the error I'm getting after importing above suggested packages in my main script.

[anthony-tuininga]

See the link below from @davjones12. That seems to be the source of the issue!

[cjbj]

@ybindu screenshots aren't great since they aren't (among many things) searchable, so let me add the error from your post in text for future searchability:

Unable to import module 'lambda_function': /lib64/libc.so.6: version `GLIBC_2.28' not found (required by /var/task/cryptography/hazmat/bindings/_rust.abi3.so)

The solution link kindly provided by @davjones12 had a similar message:

Runtime.ImportModuleError: Unable to import module 'main': /lib64/libc.so.6: version `GLIBC_2.18' not found (required by /var/task/cryptography/hazmat/bindings/_rust.abi3.so)

[ybindu]

Is this issue resolved? If so could someone help on resolving this. I'm also facing same issue.

[edgar-slalom]

I couldn't get it resolved. So gave up on it because this is for a production system so no time to 'try and fail". Hopefully someone will help you out.

[davjones12]

pyca/cryptography#6391