class WmiLite::WmiException

Public Class Methods

new(exception, wmi_method_context, namespace, query = nil, class_name = nil) click to toggle source
Calls superclass method
# File lib/wmi-lite/wmi_exception.rb, line 21
def initialize(exception, wmi_method_context, namespace, query = nil, class_name = nil)
  error_message = exception.message
  error_code = translate_error_code(error_message)

  case wmi_method_context
  when :ConnectServer
    error_message = translate_wmi_connect_error_message(error_message, error_code, namespace)
  when :ExecQuery
    error_message = translate_query_error_message(error_message, error_code, namespace, query, class_name)
  end

  super(error_message)
end

Private Instance Methods

translate_error_code(error_message) click to toggle source
# File lib/wmi-lite/wmi_exception.rb, line 37
def translate_error_code(error_message)
  error_code = nil

  # Parse the error to get the error status code
  error_code_match = error_message.match(/[^\:]+\:\s*([0-9A-Fa-f]{1,8}).*/)
  error_code = error_code_match.captures.first if error_code_match
  error_code ? error_code : ""
end
translate_query_error_message(native_message, error_code, namespace, query, class_name) click to toggle source
# File lib/wmi-lite/wmi_exception.rb, line 56
def translate_query_error_message(native_message, error_code, namespace, query, class_name)
  error_message = "An error occurred when querying namespace \'#{namespace}\' with query \'#{query}\'.\n#{native_message}"

  error_code = translate_error_code(error_message)

  # Use the status code to generate a more friendly message
  case error_code
  when /80041010/i
    if class_name
      error_message = "The specified class \'#{class_name}\' is not valid in the namespace \'#{namespace}\'.\n#{native_message}."
    else
      error_message = "The specified query \'#{query}\' referenced a class that is not valid in the namespace \'#{namespace}\'\n#{native_message}."
    end
  when /80041017/i
    error_message = "The specified query \'#{query}\' in namespace \'#{namespace}\' is not a syntactically valid query.\n#{native_message}"
  end

  error_message
end
translate_wmi_connect_error_message(native_message, error_code, namespace) click to toggle source
# File lib/wmi-lite/wmi_exception.rb, line 46
def translate_wmi_connect_error_message(native_message, error_code, namespace)
  error_message = "An error occurred connecting to the WMI service for namespace \'#{namespace}\'. The namespace may not be valid, access may not be allowed to the WMI service, or the WMI service may not be available.\n#{native_message}"

  if error_code =~ /8004100E/i
    error_message = "The specified namespace name \'#{namespace}\' is not a valid namespace name or does not exist.\n#{native_message}"
  end

  error_message
end