Class: Toolchest::Router

Inherits:
Object
  • Object
show all
Defined in:
lib/toolchest/router.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(mount_key: :default) ⇒ Router

Returns a new instance of Router.



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# File 'lib/toolchest/router.rb', line 5

def initialize(mount_key: :default)
  @mount_key = mount_key.to_sym
  @tool_map = {}
  @toolbox_classes = []
  @mcp_server = nil
  @rack_app = nil
end

Instance Attribute Details

#mcp_server ⇒ Object

Returns the value of attribute mcp_server.



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# File 'lib/toolchest/router.rb', line 3

def mcp_server
  @mcp_server
end

#rack_app ⇒ Object

Returns the value of attribute rack_app.



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# File 'lib/toolchest/router.rb', line 3

def rack_app
  @rack_app
end

Instance Method Details

#completion_values(argument_name) ⇒ Object 



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# File 'lib/toolchest/router.rb', line 164

def completion_values(argument_name)
  tool_definitions.flat_map(&:params)
    .select { |p| p.name.to_s == argument_name.to_s && p.enum }
    .flat_map(&:enum)
    .uniq
end

#dispatch(tool_name, arguments = {}) ⇒ Object 



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# File 'lib/toolchest/router.rb', line 48

def dispatch(tool_name, arguments = {})
  definition = find_tool(tool_name)
  unless definition
    return { content: [{ type: "text", text: "Unknown tool: #{tool_name}" }], isError: true }
  end

  config = Toolchest.configuration(@mount_key)
  if config.filter_tools_by_scope
    auth = Toolchest::Current.auth
    scopes = auth ? extract_scopes(auth) : nil
    if config.auth != :none && (!scopes || !tool_allowed_by_scopes?(definition, scopes))
      return { content: [{ type: "text", text: "Forbidden: insufficient scope" }], isError: true }
    end
  end

  start_time = Process.clock_gettime(Process::CLOCK_MONOTONIC)
  auth = Toolchest::Current.auth
  token_hint = extract_token_hint(auth)

  log_request_start(definition, arguments, token_hint)

  toolbox = definition.toolbox_class.new(
    params: arguments,
    tool_definition: definition
  )
  response = toolbox.dispatch(definition.method_name)

  duration = ((Process.clock_gettime(Process::CLOCK_MONOTONIC) - start_time) * 1000).round(1)
  log_request_complete(definition, response, duration)

  response
end

#dispatch_response(params) ⇒ Object 



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# File 'lib/toolchest/router.rb', line 81

def dispatch_response(params)
  name = params[:name] || params["name"]
  arguments = params[:arguments] || params["arguments"] || {}
  dispatch(name, arguments)
end

#notify_log(level:, message:) ⇒ Object 



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# File 'lib/toolchest/router.rb', line 171

def notify_log(level:, message:)
  return unless @mcp_server
  @mcp_server.notify_log_message(
    data: message,
    level: level,
    logger: "Toolchest"
  )
end

#prompts_for_handler ⇒ Object 



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# File 'lib/toolchest/router.rb', line 134

def prompts_for_handler
  prompts_list.map { |p|
    prompt = { name: p[:name], description: p[:description] }.compact
    if p[:arguments].any?
      prompt[:arguments] = p[:arguments].map { |name, opts|
        arg = { name: name.to_s }
        arg[:description] = opts[:description] if opts[:description]
        arg[:required] = opts[:required] if opts.key?(:required)
        arg
      }
    end
    prompt
  }
end

#prompts_get(name, arguments = {}) ⇒ Object 



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# File 'lib/toolchest/router.rb', line 149

def prompts_get(name, arguments = {})
  prompt = prompts_list.find { |p| p[:name] == name }
  return { messages: [] } unless prompt

  kwargs = arguments.transform_keys(&:to_sym)
  messages = prompt[:block].call(**kwargs)
  { messages: messages }
end

#prompts_get_response(params) ⇒ Object 



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# File 'lib/toolchest/router.rb', line 158

def prompts_get_response(params)
  name = params[:name] || params["name"]
  arguments = params[:arguments] || params["arguments"] || {}
  prompts_get(name, arguments)
end

#prompts_list ⇒ Object 



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# File 'lib/toolchest/router.rb', line 132

def prompts_list = @toolbox_classes.flat_map(&:prompts)

#register(toolbox_class) ⇒ Object 



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# File 'lib/toolchest/router.rb', line 13

def register(toolbox_class)
  @toolbox_classes << toolbox_class unless @toolbox_classes.include?(toolbox_class)
  rebuild_tool_map!
end

#resource_templates_for_handler ⇒ Object 



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# File 'lib/toolchest/router.rb', line 95

def resource_templates_for_handler
  @toolbox_classes.flat_map(&:resources).select { |r| r[:template] }.map { |r|
    { uriTemplate: r[:uri], name: r[:name], description: r[:description] }.compact
  }
end

#resources_for_handler ⇒ Object 



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# File 'lib/toolchest/router.rb', line 89

def resources_for_handler
  resources_list.map { |r|
    { uri: r[:uri], name: r[:name], description: r[:description] }.compact
  }
end

#resources_list ⇒ Object 



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# File 'lib/toolchest/router.rb', line 87

def resources_list = @toolbox_classes.flat_map(&:resources).reject { |r| r[:template] }

#resources_read(uri) ⇒ Object 



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# File 'lib/toolchest/router.rb', line 101

def resources_read(uri)
  resource = @toolbox_classes.flat_map(&:resources).find { |r|
    if r[:template]
      pattern = r[:uri].gsub(/\{[^}]+\}/, "([^/]+)")
      uri.match?(Regexp.new("^#{pattern}$"))
    else
      r[:uri] == uri
    end
  }

  unless resource
    return [{ uri: uri, mimeType: "text/plain", text: "Resource not found: #{uri}" }]
  end

  result = if resource[:template]
    pattern = resource[:uri].gsub(/\{([^}]+)\}/, '(?<\1>[^/]+)')
    match = uri.match(Regexp.new("^#{pattern}$"))
    kwargs = match.named_captures.transform_keys(&:to_sym)
    resource[:block].call(**kwargs)
  else
    resource[:block].call
  end

  [{ uri: uri, mimeType: "application/json", text: result.to_json }]
end

#resources_read_response(params) ⇒ Object 



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# File 'lib/toolchest/router.rb', line 127

def resources_read_response(params)
  uri = params[:uri] || params["uri"]
  resources_read(uri)
end

#toolbox_classes ⇒ Object 



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# File 'lib/toolchest/router.rb', line 18

def toolbox_classes = @toolbox_classes

#tools_for_handler ⇒ Object

For the MCP SDK handler — returns array (SDK wraps it)



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# File 'lib/toolchest/router.rb', line 23

def tools_for_handler
  config = Toolchest.configuration(@mount_key)

  unless config.filter_tools_by_scope
    return tools_list
  end

  auth = Toolchest::Current.auth

  # No auth: show all tools for :none, show nothing otherwise
  unless auth
    return config.auth == :none ? tools_list : []
  end

  scopes = extract_scopes(auth)

  # Auth present but no scopes extractable: fail closed
  unless scopes
    return []
  end

  tool_definitions.select { |td| tool_allowed_by_scopes?(td, scopes) }
                  .map { |td| td.to_mcp_schema }
end

#tools_list ⇒ Object 



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# File 'lib/toolchest/router.rb', line 20

def tools_list = tool_definitions.map { |td| td.to_mcp_schema }