Class: ActionMCP::ResourceResponse

Inherits:
BaseResponse show all
Defined in:
lib/action_mcp/resource_response.rb

Overview

Manages resource resolution results and errors for ResourceTemplate operations. Unlike ToolResponse, ResourceResponse only uses JSON-RPC protocol errors per MCP spec.

Instance Attribute Summary collapse

Attributes inherited from BaseResponse

#is_error

Instance Method Summary collapse

Methods inherited from BaseResponse

#==, #eql?, #error?, #hash, #mark_as_error!, #success?, #to_json

Constructor Details

#initialize ⇒ ResourceResponse

Returns a new instance of ResourceResponse.



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# File 'lib/action_mcp/resource_response.rb', line 11

def initialize
  super
  @contents = []
end

Instance Attribute Details

#contents ⇒ Object (readonly)

Returns the value of attribute contents.



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# File 'lib/action_mcp/resource_response.rb', line 7

def contents
  @contents
end

Instance Method Details

#add_content(content) ⇒ Object

Add a resource content item to the response



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# File 'lib/action_mcp/resource_response.rb', line 17

def add_content(content)
  @contents << content
  content # Return the content for chaining
end

#add_contents(contents_array) ⇒ Object

Add multiple content items



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# File 'lib/action_mcp/resource_response.rb', line 23

def add_contents(contents_array)
  @contents.concat(contents_array)
  self
end

#build_success_hash ⇒ Object

Implementation of build_success_hash for ResourceResponse



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# File 'lib/action_mcp/resource_response.rb', line 95

def build_success_hash
  {
    contents: @contents.map(&:to_h)
  }
end

#compare_with_same_class(other) ⇒ Object

Implementation of compare_with_same_class for ResourceResponse



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# File 'lib/action_mcp/resource_response.rb', line 102

def compare_with_same_class(other)
  contents == other.contents && is_error == other.is_error
end

#hash_components ⇒ Object

Implementation of hash_components for ResourceResponse



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# File 'lib/action_mcp/resource_response.rb', line 107

def hash_components
  [ contents, is_error ]
end

#inspect ⇒ Object

Pretty print for better debugging



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# File 'lib/action_mcp/resource_response.rb', line 112

def inspect
  if is_error
    "#<#{self.class.name} error: #{@error_message}>"
  else
    "#<#{self.class.name} contents: #{contents.size} items>"
  end
end

#mark_as_callback_aborted!(uri) ⇒ Object 



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# File 'lib/action_mcp/resource_response.rb', line 64

def mark_as_callback_aborted!(uri)
  mark_as_error!(
    :internal_error,
    message: "Resource resolution was aborted by callback chain",
    data: {
      uri: uri,
      error_type: "CALLBACK_ABORTED"
    }
  )
end

#mark_as_not_found!(uri) ⇒ Object 



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# File 'lib/action_mcp/resource_response.rb', line 75

def mark_as_not_found!(uri)
  @is_error = true
  @symbol = nil
  @error_message = "Resource not found"
  @error_data = { uri: uri }
  self
end

#mark_as_parameter_validation_failed!(missing_params, uri) ⇒ Object 



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# File 'lib/action_mcp/resource_response.rb', line 37

def mark_as_parameter_validation_failed!(missing_params, uri)
  mark_as_error!(
    :invalid_params,
    message: "Required parameters missing: #{missing_params.join(', ')}",
    data: {
      uri: uri,
      missing_parameters: missing_params,
      error_type: "PARAMETER_VALIDATION_FAILED"
    }
  )
end

#mark_as_resolution_failed!(uri, reason = nil) ⇒ Object 



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# File 'lib/action_mcp/resource_response.rb', line 49

def mark_as_resolution_failed!(uri, reason = nil)
  message = "Resource resolution failed for URI: #{uri}"
  message += " - #{reason}" if reason

  mark_as_error!(
    :internal_error,
    message: message,
    data: {
      uri: uri,
      reason: reason,
      error_type: "RESOLUTION_FAILED"
    }
  )
end

#mark_as_template_not_found!(uri) ⇒ Object

Mark as error with ResourceTemplate-specific error types



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# File 'lib/action_mcp/resource_response.rb', line 29

def mark_as_template_not_found!(uri)
  mark_as_error!(
    :invalid_params,
    message: "Resource template not found for URI: #{uri}",
    data: { uri: uri, error_type: "TEMPLATE_NOT_FOUND" }
  )
end

#to_h(_options = nil) ⇒ Object

Override to_h to use -32002 for resource not found (consistent with send_resource_read)



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# File 'lib/action_mcp/resource_response.rb', line 84

def to_h(_options = nil)
  if @is_error && @symbol.nil?
    { code: -32_002, message: @error_message, data: @error_data }
  elsif @is_error
    JSON_RPC::JsonRpcError.new(@symbol, message: @error_message, data: @error_data).to_h
  else
    build_success_hash
  end
end