Avro error hooks

README.md

Sample custom error hook usages for type.isValid.

assert.js

/* jshint node: true */

'use strict';

var util = require('util');


/**
 * Throw an error if a value isn't of the correct type.
 *
 * @param type {Type} The expected type.
 * @param val {...} A corresponding value to check against the above type.
 *
 */
function assertValid(type, val) {
  return type.isValid(val, {errorHook: hook});

  function hook(path, any) {
    throw new Error(util.format('invalid %s: %j', path.join(), any));
  }
}

collect.js

/* jshint node: true */

'use strict';


/**
 * Retrieve an array of all invalid nested values.
 *
 * @param type {Type} The expected type.
 * @param val {...} A corresponding value to check against the above type.
 *
 */
function collectInvalidPaths(type, val) {
  var paths = [];
  type.isValid(val, {errorHook: function (path) { paths.push(path.join()); }});
  return paths;
}