report-to/lib/validate.js

Report-To Middleware for Express

'use strict';

function isObject(value){
	return Object.prototype.toString.call(value) === '[object Object]';
}

module.exports = function validate(options){
	if(!isObject(options)){
		throw new Error('reportTo must be called with an object argument.');
	}
	if(!options.groups || !Array.isArray(options.groups)){
		throw new Error('`groups` must be an array of report groups.');
	}
	if(!options.groups.length){
		throw new Error('`groups` must contain at least 1 object.');
	}
	options.groups.forEach(function(group){
		if(!group.max_age){
			throw new Error('The `max_age` parameter is required for every defined group.');
		}
		if(typeof(group.max_age) !== 'number' || group.max_age <= 0){
			throw new Error('The `max_age` parameter must be a positive integer.');
		}
		if(!group.endpoints){
			throw new Error('The `endpoints` parameter is required for every defined group.');
		}
		if(typeof(group.group) !== 'undefined' && typeof(group.group) !== 'string'){
			throw new Error('The `group` parameter must be a string if set.');
		}
		if(group.include_subdomains && typeof(group.include_subdomains) !== 'boolean'){
			throw new Error('The `include_subdomains` parameter must be a boolean if set.');
		}
		if(!Array.isArray(group.endpoints) || !group.endpoints.length){
			throw new Error('The `endpoints` must be an array of endpoints.');
		}
		group.endpoints.forEach(function(endpoint){
			if(!endpoint.url){
				throw new Error('The `endpoint.url` parameter must be set on every endpoint');
			}
			if(endpoint.priority && typeof(endpoint.priority) !== 'number' || endpoint.priority <= 0){
				throw new Error('The `endpoint.priority parameter must be a positive integer if set.');
			}
			if(endpoint.weight && typeof(endpoint.weight) !== 'number' || endpoint.weight <= 0){
				throw new Error('The `endpoint.weight parameter must be a positive integer if set.');
			}
		});
	});
};