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# adding additional fields to Exception class to format errors according to OT-API
class Exception
attr_accessor :creator, :errorCause, :id, :http_code
def http_code; 500; end
end
module OpenTox
class BadRequestError < Exception
def http_code; 400; end
end
class NotAuthorizedError < Exception
def http_code; 401; end
end
class NotFoundError < Exception
def http_code; 404; end
end
class RestCallError < Exception
attr_accessor :rest_code, :rest_body, :rest_uri, :rest_payload, :rest_headers
def http_code; 502; end
end
class ErrorReport
# formats error according to accept-header, yaml is default
# ( sets content-type in response accordingly )
# @param [Exception] error
# @param |Sinatra::Request, optional] request
# @param [Sinatra::Response, optiona,] response, optional to set content-type
# @return [String] formated error
def self.format(error, request=nil, response=nil)
# sets current uri
error.creator = "#{request.env['rack.url_scheme']}://#{request.env['HTTP_HOST']}#{request.env['REQUEST_URI']}" if request
# bit of a hack: set instance attribute in order to add it for the to_yaml conversion
error.http_code = error.http_code
accept = request.env['HTTP_ACCEPT'].to_s if request
case accept
# when /rdf/
# TODO add error to rdf
when /html/
response['Content-Type'] = 'text/html' if response
OpenTox.text_to_html error.to_yaml
else
response['Content-Type'] = 'application/x-yaml' if response
error.to_yaml
end
end
# trys to parse error from text
# @return [Exception] Exception if parsing sucessfull, nil otherwise
def self.parse( body )
begin
err = YAML.load(body)
if err and err.is_a?(Exception)
return err
else
return nil
end
rescue
return nil
end
end
end
end
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