[MCP] Fixes and Refactoring execute_entity

[souvikghosh04]

Why make this change?

Closes on

• execute_entity [Enh]: Add DML tool: execute_entity #2831

What is this change?

This PR implements built-int tool execute_entity as part of built-in tools to support execution of stored procedures or functions.

• Performs execute operation on a stored procedure or function entity
• Supports both querying and mutation
• entity (required) name and parameters (optional based on entity parameters signature) should be specified (see sample below)
• Operation is performed based on permissions as configured in dab-config
• Success or Failure message response is generated on execution of the delete operation

How was this tested?

• Manual functional test using MCP inpector/HTTP client
• Integration Tests
• Unit Tests

Sample Request(s)

Execute stored procedure to read queries-

POST http://localhost:5000/mcp

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "execute_entity",
    "arguments": {
      "entity": "GetBook",
      "parameters": {
        "id": 1
      }
    }
  }
}

Execute stored procedure without parameters-

POST http://localhost:5000/mcp

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "execute_entity",
    "arguments": {
      "entity": "GetBooks"
    }
  }
}

[Copilot]

Pull Request Overview

This PR implements the execute-entity built-in tool for the Model Context Protocol (MCP) to support execution of stored procedures or functions as DAB entities. The tool validates permissions, parses parameters, and executes stored procedures while providing comprehensive error handling.

• Adds ExecuteEntityTool class with execute operations for stored procedures/functions
• Implements parameter validation and authorization checks using existing DAB permissions
• Provides detailed error handling for SQL Server and generic database exceptions

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[Copilot]

Pull Request Overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated 4 comments.

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[RubenCerna2079]

Just left a few comments. I'll be waiting for the next PR with the refactoring :)

[souvikghosh04]

/azp run

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[anushakolan]

/azp run

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[anushakolan]

LGTM!!

[RubenCerna2079]

/azp run

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Azure Pipelines successfully started running 6 pipeline(s).

[RubenCerna2079]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 6 pipeline(s).

[anushakolan]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 6 pipeline(s).