wip: add milvus vectordb

[danijerez]

I think all semantic-kernel connectors are similar and can be abstracted (with problems mapping metadata). First I tried to make the one from DuckDb, which seems a little simpler and for Milvus I have practically reused that one. I have not been able to configure the test containers, but I think the implementation could work, could someone help me?

tryAGI/LangChain.Databases#5

Summary by CodeRabbit

• New Features

  • Introduced support for the Milvus database, enhancing the solution's capabilities for managing vector data.
  • Added new project and integration tests for the Milvus database, improving the testing framework's breadth.

• Bug Fixes

  • Commented out problematic test cases related to Elasticsearch and Milvus to focus on stable database integrations.

• Refactor

  • Improved XML formatting in package version declarations for better readability.

• Documentation

  • Updated project references to include the new Milvus database dependencies.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

The recent changes to the LangChain solution introduce support for the Milvus database, enhancing integration testing and functionality across the framework. New project files, classes, and methods have been added to facilitate vector management and database operations. Changes also include updates to the solution configuration and test cases to streamline integration, allowing for efficient handling of vector data within the LangChain ecosystem.

Changes

File	Change Summary
LangChain.sln	Added projects for "Milvus" and "LangChain.Databases.Milvus," updating solution configurations and build settings.
src/Databases/IntegrationTests/DatabaseTests.Configure.cs	Enhanced integration tests with Milvus setup; added container logic for etcd, MinIO, and Milvus.
src/Databases/IntegrationTests/DatabaseTests.cs	Commented out test cases for Elasticsearch and Milvus, focusing on remaining supported databases.
src/Databases/IntegrationTests/LangChain.Databases.IntegrationTests.csproj	Added project reference for LangChain.Databases.Milvus.
src/Databases/IntegrationTests/SupportedDatabase.cs	Introduced Milvus to SupportedDatabase enumeration.
src/Databases/Milvus/src/LangChain.Databases.Milvus.csproj	Created new project file targeting netstandard2.0 with essential dependencies for Milvus integration.
src/Databases/Milvus/src/MilvusVectorCollection.cs	Added MilvusVectorCollection class for managing vectors, including methods for adding, deleting, and searching.
src/Databases/Milvus/src/MilvusVectorDatabase.cs	Introduced MilvusVectorDatabase class implementing IVectorDatabase with methods for collection management.
src/Directory.Packages.props	Cleaned up XML formatting for package version declarations for better readability.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant Application
    participant MilvusVectorDatabase
    participant MilvusVectorCollection

    User->>Application: Initialize Database
    Application->>MilvusVectorDatabase: Create or Get Collection
    MilvusVectorDatabase-->>Application: Collection Info
    Application->>MilvusVectorCollection: Add Vectors
    MilvusVectorCollection-->>MilvusVectorDatabase: Upsert Vectors
    MilvusVectorDatabase-->>MilvusVectorCollection: Confirmation
    User->>Application: Query Vectors
    Application->>MilvusVectorCollection: Search Vectors
    MilvusVectorCollection-->>MilvusVectorDatabase: Search Request
    MilvusVectorDatabase-->>MilvusVectorCollection: Search Results
    MilvusVectorCollection-->>Application: Return Results
    Application-->>User: Display Results

Loading

🐰 In the meadow where data flows,
New friends in Milvus, each one glows.
Vectors dancing, tests in line,
With every change, our code will shine.
Hop along, with joy we sing,
In LangChain's heart, let Milvus spring! 🌼

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