NeptuneGraph in notebook throwing error while creating Graph intsnace for NeptuneOpenCypherQAChain

[aradhanachaturvedi]

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Example Code

host = "host>
port = 8182
use_https = True

client = boto3.client(
   'neptune',
   region_name='us-east-1',
    aws_access_key_id=<key_id>,
    aws_secret_access_key=<key>,
    aws_session_token=<token>,
    verify=False
)

graph = NeptuneGraph(host=host, port=port,use_https=use_https,client=client)

Description

Hi I am trying to connect to Neptune from my notebook,however I am getting error, I have checked the version is 1.2.1.0
{'message': 'Could not get schema for Neptune database', 'detail': '{'message': 'Summary API is not available for this instance of Neptune,ensure the engine version is >=1.2.1.0', 'details': "'Neptune' object has no attribute 'get_propertygraph_summary'"}'}. Is there any workaround. I wan to use NeptuneOpenCypherQAChain

System Info

langchain==0.1.20
langchain-community==0.0.38
langchain-core==0.1.52
langchain-experimental==0.0.57
langchain-openai==0.1.3
langchain-text-splitters==0.0.1

[dosubot[bot]]

The error you're encountering suggests that the get_propertygraph_summary method is not available for your Neptune instance, even though you have verified that the engine version is 1.2.1.0. Here are a few steps to troubleshoot and potentially resolve this issue:

1. Verify Engine Version: Double-check that your Neptune instance is indeed running version 1.2.1.0 or higher. You can do this through the AWS Management Console or by using the AWS CLI.

2. Check API Availability: Ensure that the Summary API is enabled and available for your Neptune instance. This API might not be available in all regions or for all instance types.

3. Update boto3: Make sure you have the latest version of boto3 installed. The NeptuneGraph class requires boto3 version 1.28.38 or greater. You can update it using:

   pip install -U boto3

4. AWS Credentials: Ensure that your AWS credentials are correctly configured and have the necessary permissions to access the Neptune instance and execute the get_propertygraph_summary method.

5. Code Example: Here is an example of how to correctly instantiate the NeptuneGraph and use it with NeptuneOpenCypherQAChain:

   from langchain_community.graphs import NeptuneGraph
   from langchain.chains import NeptuneOpenCypherQAChain
   from langchain_openai import ChatOpenAI
   import boto3
   
   # Initialize the NeptuneGraph
   host = "<neptune-host>"
   port = 8182
   use_https = True
   
   # Initialize the boto3 client
   client = boto3.client(
       'neptune',
       region_name='us-east-1',
       aws_access_key_id='<key_id>',
       aws_secret_access_key='<key>',
       aws_session_token='<token>',
       verify=False
   )
   
   graph = NeptuneGraph(host=host, port=port, use_https=use_https, client=client)
   
   # Initialize the language model
   llm = ChatOpenAI(temperature=0, model="gpt-4")
   
   # Create the QA chain
   chain = NeptuneOpenCypherQAChain.from_llm(llm=llm, graph=graph)
   
   # Invoke the chain with a query
   response = chain.invoke("how many outgoing routes does the Austin airport have?")
   print(response)

If the error persists, it might be worth checking if there are any specific configurations or settings required for your Neptune instance to support the get_propertygraph_summary method ^[1].

To continue talking to Dosu, mention @dosu.

[aradhanachaturvedi]

@dosu. NeptuneGraph doesnt have use_iam_auth parameter available

[dosubot[bot]]

To configure the NeptuneGraph class to use IAM authentication, you need to set the sign parameter to True and provide the necessary AWS credentials. Here is an example of how to do this:

import boto3
from langchain_community.graphs.neptune_graph import NeptuneGraph

# Initialize the NeptuneGraph with IAM authentication
host = "<your host>"
port = 8182  # change if different
region = "us-east-1"  # change if different
graph = NeptuneGraph(
    host=host,
    port=port,
    region_name=region,
    sign=True
)

# Optionally change the schema
# elems = graph.get_schema_elements
# change elems ...
# graph.load_schema(elems)

# Now you can use the graph object to interact with your Neptune database
schema = graph.get_schema()
print(schema)

Make sure to replace <your host> and 'us-east-1' with your actual Neptune endpoint and AWS region, respectively. The NeptuneGraph class from the langchain_community.graphs module is used to connect to the Neptune database with IAM authentication enabled ^[1][2][3].

To continue talking to Dosu, mention @dosu.

[aradhanachaturvedi]

@dosu. This is not working . I think we need to make a call and get accesskey,etc same way as in NeptunerdfGraph. Can you provide all those details

[dosubot[bot]]

To correctly use IAM authentication for connecting to an Amazon Neptune database using the NeptuneGraph class, you need to obtain the necessary AWS credentials programmatically and ensure that the sign parameter is set to True. Here is an example of how you can do this:

import boto3
from langchain_community.graphs.neptune_graph import NeptuneGraph

# Initialize a boto3 session to obtain AWS credentials
session = boto3.Session()
credentials = session.get_credentials()
current_credentials = credentials.get_frozen_credentials()

# Initialize the NeptuneGraph with IAM authentication
host = "<your host>"
port = 8182  # change if different
region = "us-east-1"  # change if different

graph = NeptuneGraph(
    host=host,
    port=port,
    region_name=region,
    sign=True,
    aws_access_key_id=current_credentials.access_key,
    aws_secret_access_key=current_credentials.secret_key,
    aws_session_token=current_credentials.token
)

# Now you can use the graph object to interact with your Neptune database
schema = graph.get_schema()
print(schema)

In this example:

1. A boto3 session is created to obtain the AWS credentials.
2. The NeptuneGraph class is initialized with the sign parameter set to True and the obtained AWS credentials.

Make sure to replace <your host> and 'us-east-1' with your actual Neptune endpoint and AWS region, respectively ^[1][2][3].

To continue talking to Dosu, mention @dosu.

[recovere-hima]

@aradhanachaturvedi did u end up fixing the issue?. I am also have the same error.

[Boopalanoptisol]

@aradhanachaturvedi did u resolve the below error.

{'message': 'Could not get schema for Neptune database', 'detail': '{'message': 'Summary API is not available for this instance of Neptune,ensure the engine version is >=1.2.1.0', 'details': "'Neptune' object has no attribute 'get_propertygraph_summary'"}'}.

If so, can u explain the workaround . am also facing the same issue.

[aradhanachaturvedi]

no I could not :(