Gremlinpython 3.4.X to Neptune with IAM Authentication

[Roi Talpaz]

Hi all!

I want to authenticate with AWS Neptune using IAM.

I was able to implement the SigV4 Mechanism using the example here:
https://docs.aws.amazon.com/neptune/latest/userguide/iam-auth-connecting-python.html
and also https://github.com/triggan/neptune-python-sigv4-ws

But it seems it does not support refreshing of the token, timestamps and so on for long (few days) WebSocket sessions.

I saw that there is this library created by folks at AWS
https://github.com/awslabs/amazon-neptune-tools/tree/master/neptune-python-utils

This looks great but it does not support gremlin-python 3.4.x even though Neptune only support up until gremlin-python 3.4.11 :S

https://docs.aws.amazon.com/neptune/latest/userguide/engine-releases-1.0.5.1.html

Would really appreciate any help!
Roi 

[Stephen Mallette]

Did you try the 3.5.1? As you've noted, Neptune doesn't officially support it just yet but as long as you stick to 3.4.x Gremlin syntax it might help move you along.

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[Roi Talpaz]

I didn't try, but I am a bit worried it will cause unexpected issues :S

Has anyone tried using 3.5 and Neptune here and care to comment?

[Kelvin Lawrence]

Hi there - I have been using the 3.5.1 Gremlin Python client with Neptune regularly. We also just moved the graph-notebook project up to that same Python client level. There are a few things to be aware of. 

1. If you use the client inside a Jupyter Notebook and create your own connections, you will need to create the DriverRemoteConnection as shown below.
2. The 3.5.x client no longer uses Tornado. It uses AIO HTTP. This solves a lot of issues we have had in the past with the Gremlin Python client and Jupyter's event loop. As part of your SigV4 Signing, if you call any Tornado methods, just use the equivalent ones from Requests/AIO HTTP instead.

connection = DriverRemoteConnection(endpoint,'g',

                 transport_factory=lambda:AiohttpTransport(call_from_event_loop=True))

Happy to help more if you have any follow up questions.

Cheers,

Kelvin