Amazon.Runtime.Documents.InvalidDocumentTypeConversionException

[phspies]

Describe the bug

When using the the RetrievalFilter class for a Bedrock KnowledgeBase request it seems the key, value requires that you use the Amazon.Runtime.Documents.Document class within the filter structure. When attempting to use this filtering class the KnowledgeBase service seemed to ignore my filters but after further investigation, it seems the document class cannot be serialized. While trying to troubleshoot the problem I got this exception:

Amazon.Runtime.Documents.InvalidDocumentTypeConversionException: Cannot Convert DocumentType to List because it is String

I tried using this Document class multiple ways but it fails all the same:

retrievalFilter.Equals = new FilterAttribute
                {
                    Key = "TeamId",
                    Value = new Document(teamsId.ToString())
                };

This also fails

retrievalFilter.Equals = new FilterAttribute
                {
                    Key = "TeamId",
                    Value = teamsId.ToString()
                };

When I serialize the object using Serliog's internal serializer, it works but my filter values are empty:

{
    "Input": {
        "Text": "what is the diagrams about",
        "$type": "RetrieveAndGenerateInput"
    },
    "RetrieveAndGenerateConfiguration": {
        "ExternalSourcesConfiguration": null,
        "KnowledgeBaseConfiguration": {
            "GenerationConfiguration": null,
            "KnowledgeBaseId": "28W0R6NFGO",
            "ModelArn": "anthropic.claude-3-sonnet-20240229-v1:0",
            "OrchestrationConfiguration": null,
            "RetrievalConfiguration": {
                "VectorSearchConfiguration": {
                    "Filter": {
                        "AndAll": [
                            {
                                "AndAll": null,
                                "Equals": {
                                    "Key": "TeamId",
                                    "Value": [
                                        null
                                    ],
                                    "$type": "FilterAttribute"
                                },
                                "GreaterThan": null,
                                "GreaterThanOrEquals": null,
                                "In": null,
                                "LessThan": null,
                                "LessThanOrEquals": null,
                                "ListContains": null,
                                "NotEquals": null,
                                "NotIn": null,
                                "OrAll": null,
                                "StartsWith": null,
                                "StringContains": null,
                                "$type": "RetrievalFilter"
                            },
                            {
                                "AndAll": null,
                                "Equals": {
                                    "Key": "MeetingId",
                                    "Value": [
                                        null
                                    ],
                                    "$type": "FilterAttribute"
                                },
                                "GreaterThan": null,
                                "GreaterThanOrEquals": null,
                                "In": null,
                                "LessThan": null,
                                "LessThanOrEquals": null,
                                "ListContains": null,
                                "NotEquals": null,
                                "NotIn": null,
                                "OrAll": null,
                                "StartsWith": null,
                                "StringContains": null,
                                "$type": "RetrievalFilter"
                            }
                        ],
                        "Equals": null,
                        "GreaterThan": null,
                        "GreaterThanOrEquals": null,
                        "In": null,
                        "LessThan": null,
                        "LessThanOrEquals": null,
                        "ListContains": null,
                        "NotEquals": null,
                        "NotIn": null,
                        "OrAll": null,
                        "StartsWith": null,
                        "StringContains": null,
                        "$type": "RetrievalFilter"
                    },
                    "ImplicitFilterConfiguration": null,
                    "NumberOfResults": null,
                    "OverrideSearchType": null,
                    "RerankingConfiguration": null,
                    "$type": "KnowledgeBaseVectorSearchConfiguration"
                },
                "$type": "KnowledgeBaseRetrievalConfiguration"
            },
            "$type": "KnowledgeBaseRetrieveAndGenerateConfiguration"
        },
        "Type": {
            "Value": "KNOWLEDGE_BASE",
            "$type": "RetrieveAndGenerateType"
        },
        "$type": "RetrieveAndGenerateConfiguration"
    },
    "SessionConfiguration": null,
    "SessionId": null,
    "$type": "RetrieveAndGenerateRequest"
}

Regression Issue

• Select this option if this issue appears to be a regression.

Expected Behavior

Document class needs to serializable and should pass the Value defined into the payload.

Current Behavior

Document object is not serializable.

Reproduction Steps

In the details above.

Possible Solution

No response

Additional Information/Context

No response

AWS .NET SDK and/or Package version used

4.0.0-Preview5

Targeted .NET Platform

.Net 8.0

Operating System and version

Lambda

[phspies]

Downgraded to v3.7.421.5 and it still persists.

[ashishdhingra]

@phspies Good afternoon. Could you please share self-contained code to reproduce the issue? I notice that you are using Document class from Amazon.Runtime.Documents namespace. Are you using the correct type?

[phspies]

That is what the FilterAttribute class is expecting yes. Is there another namespace I need to use here?

[ashishdhingra]

That is what the FilterAttribute class is expecting yes. Is there another namespace I need to use here?

@phspies Good morning. I tried testing the below code in a Console application and stepped into RetrieveAndGenerateRequestMarshaller while debugging via Visual Studio:

using Amazon.BedrockAgentRuntime;
using Amazon.BedrockAgentRuntime.Model;

var client = new AmazonBedrockAgentRuntimeClient();
var retrieveAndGenerateRequest = new RetrieveAndGenerateRequest()
{
    Input = new RetrieveAndGenerateInput()
    {
        Text = "what is the diagrams about"
    },
    RetrieveAndGenerateConfiguration = new RetrieveAndGenerateConfiguration()
    {
        Type = RetrieveAndGenerateType.KNOWLEDGE_BASE,
         KnowledgeBaseConfiguration = new KnowledgeBaseRetrieveAndGenerateConfiguration()
         {
            KnowledgeBaseId = "",
            ModelArn = "",
            RetrievalConfiguration = new KnowledgeBaseRetrievalConfiguration()
            {
                VectorSearchConfiguration = new KnowledgeBaseVectorSearchConfiguration()
                {
                    Filter = new RetrievalFilter()
                    {
                        AndAll = new List<RetrievalFilter>()
                        {
                            new RetrievalFilter()
                            {
                                Equals = new FilterAttribute()
                                {
                                    Key = "TeamId",
                                    Value = new Amazon.Runtime.Documents.Document("TestTeamId")
                                }
                            },
                            new RetrievalFilter()
                            {
                                Equals = new FilterAttribute()
                                {
                                    Key = "MeetingId",
                                    Value = new Amazon.Runtime.Documents.Document("TestMeetingId")
                                }
                            }
                        }
                    }
                }
            }
         }
    }
};

var response = await client.RetrieveAndGenerateAsync(retrieveAndGenerateRequest);
Console.Read();

Inspecting the value of request JSON generated here, it had the below contents:

{
  "input": {
    "text": "what is the diagrams about"
  },
  "retrieveAndGenerateConfiguration": {
    "knowledgeBaseConfiguration": {
      "knowledgeBaseId": "",
      "modelArn": "",
      "retrievalConfiguration": {
        "vectorSearchConfiguration": {
          "filter": {
            "andAll": [
              {
                "equals": {
                  "key": "TeamId",
                  "value": "TestTeamId"
                }
              },
              {
                "equals": {
                  "key": "MeetingId",
                  "value": "TestMeetingId"
                }
              }
            ]
          }
        }
      }
    },
    "type": "KNOWLEDGE_BASE"
  }
}

Could you please share the self-contained reproducible code as a Lambda project that we could use to troubleshoot the issue? Most likely it is a serializer issue.

Thanks,
Ashish