Class: McpLite::Executor::ResourceReader

Inherits:
Object
  • Object
show all
Defined in:
lib/mcp_lite/executor/resource_reader.rb

Instance Method Summary collapse

Constructor Details

#initialize(schema:, context: {}) ⇒ ResourceReader

Returns a new instance of ResourceReader.



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# File 'lib/mcp_lite/executor/resource_reader.rb', line 4

def initialize(schema:, context: {})
  @schema = schema
  @context = context
end

Instance Method Details

#read(uri:) ⇒ Object 



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# File 'lib/mcp_lite/executor/resource_reader.rb', line 9

def read(uri:)
  unless uri
    return {
      isError: true,
      contents: []
    }
  end

  resource = @schema.visible_resources.find do |r|
    r.uri == uri
  end

  unless resource
    return {
      isError: true,
      contents: []
    }
  end

  if resource.class.respond_to?(:visible?) && !resource.class.visible?(context: @context)
    return {
      isError: true,
      contents: []
    }
  end

  begin
    if resource.respond_to?(:text) && (content = resource.content)
      {
        contents: [
          {
            uri:,
            mimeType: resource.class.mime_type_value,
            text: content
          }
        ]
      }
    elsif (content = resource.blob)
      {
        contents: [
          {
            uri:,
            mimeType: resource.class.mime_type_value,
            blob: Base64.strict_encode64(content)
          }
        ]
      }
    end
  rescue
    {
      isError: true,
      contents: []
    }
  end
end