feat: Added Elasticsearch database.

[HavenDV]

Docs: https://www.elastic.co/guide/en/elasticsearch/client/net-api/current/getting-started-net.html#_creating_an_index

Summary by CodeRabbit

• New Features

  • Introduced support for Elasticsearch, including the addition of ElasticsearchVectorCollection and ElasticsearchVectorDatabase classes.
  • Added methods for creating, retrieving, deleting, and searching vector collections in Elasticsearch.
  • Expanded the set of supported databases to include Elasticsearch.

• Tests

  • Updated testing framework to support Elasticsearch, though specific tests for this database option are currently disabled.

• Chores

  • Added necessary package references and project configurations to support Elasticsearch integration across the application.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

The recent changes to the LangChain project integrate Elasticsearch as a new database option, enhancing its capabilities for managing vector data. This update introduces new classes and interfaces for Elasticsearch support, modifies the solution and project files for compatibility, and expands testing frameworks to accommodate the new functionality. Overall, this marks a significant milestone in broadening the project's scope.

Changes

File(s)	Change Summary
LangChain.sln	Added new project entries for Elasticsearch and updated solution configurations to support the new projects.
src/Databases/Elasticsearch/src/ElasticsearchVectorCollection.cs	Introduced ElasticsearchVectorCollection class for managing vector data in Elasticsearch, with async methods currently unimplemented.
src/Databases/Elasticsearch/src/ElasticsearchVectorDatabase.cs	Created ElasticsearchVectorDatabase class implementing IVectorDatabase, providing methods for collection management, also currently unimplemented.
src/Databases/Elasticsearch/src/LangChain.Databases.Elasticsearch.csproj	Established a new .NET project for Elasticsearch, specifying target frameworks and package references.
src/Databases/IntegrationTests/DatabaseTests.Configure.cs	Extended StartEnvironmentForAsync to support Elasticsearch configuration in the test environment.
src/Databases/IntegrationTests/DatabaseTests.cs	Commented out test cases for Elasticsearch due to current compatibility issues.
src/Databases/IntegrationTests/LangChain.Databases.IntegrationTests.csproj	Added project reference for Elasticsearch and package reference for Testcontainers.Elasticsearch to support integration testing.
src/Databases/IntegrationTests/SupportedDatabase.cs	Updated SupportedDatabase enum to include Elasticsearch as a new database option.
src/Directory.Packages.props	Added package dependencies for Elastic.Clients.Elasticsearch and Testcontainers.Elasticsearch, enhancing Elasticsearch functionality.

Sequence Diagram(s)

sequenceDiagram
    participant TestEnvironment
    participant ElasticsearchClient
    participant Database

    TestEnvironment->>ElasticsearchClient: Initialize with configuration
    ElasticsearchClient-->>Database: Connect to Elasticsearch
    TestEnvironment->>Database: Execute vector operations
    Database-->>TestEnvironment: Return results

Loading

Poem

In the land of code, where rabbits hop,
Elasticsearch joins, and we can't stop!
With vectors to gather, and data to seek,
New features abound, oh, what a peak!
Let's celebrate changes, with joy and cheer,
For every new line, a bunny brings near! 🐇✨

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