Simple Chat Room in NodeJS, expressJS and mongoDB in Docker Swarm
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4 years ago
'use strict';
/*!
* Module dependencies.
*/
const ValidationError = require('../error/validation');
const cleanPositionalOperators = require('./schema/cleanPositionalOperators');
const flatten = require('./common').flatten;
const modifiedPaths = require('./common').modifiedPaths;
/**
* Applies validators and defaults to update and findOneAndUpdate operations,
* specifically passing a null doc as `this` to validators and defaults
*
* @param {Query} query
* @param {Schema} schema
* @param {Object} castedDoc
* @param {Object} options
* @method runValidatorsOnUpdate
* @api private
*/
module.exports = function(query, schema, castedDoc, options, callback) {
let _keys;
const keys = Object.keys(castedDoc || {});
let updatedKeys = {};
let updatedValues = {};
const isPull = {};
const arrayAtomicUpdates = {};
const numKeys = keys.length;
let hasDollarUpdate = false;
const modified = {};
let currentUpdate;
let key;
let i;
for (i = 0; i < numKeys; ++i) {
if (keys[i].startsWith('$')) {
hasDollarUpdate = true;
if (keys[i] === '$push' || keys[i] === '$addToSet') {
_keys = Object.keys(castedDoc[keys[i]]);
for (let ii = 0; ii < _keys.length; ++ii) {
currentUpdate = castedDoc[keys[i]][_keys[ii]];
if (currentUpdate && currentUpdate.$each) {
arrayAtomicUpdates[_keys[ii]] = (arrayAtomicUpdates[_keys[ii]] || []).
concat(currentUpdate.$each);
} else {
arrayAtomicUpdates[_keys[ii]] = (arrayAtomicUpdates[_keys[ii]] || []).
concat([currentUpdate]);
}
}
continue;
}
modifiedPaths(castedDoc[keys[i]], '', modified);
const flat = flatten(castedDoc[keys[i]], null, null, schema);
const paths = Object.keys(flat);
const numPaths = paths.length;
for (let j = 0; j < numPaths; ++j) {
const updatedPath = cleanPositionalOperators(paths[j]);
key = keys[i];
// With `$pull` we might flatten `$in`. Skip stuff nested under `$in`
// for the rest of the logic, it will get handled later.
if (updatedPath.includes('$')) {
continue;
}
if (key === '$set' || key === '$setOnInsert' ||
key === '$pull' || key === '$pullAll') {
updatedValues[updatedPath] = flat[paths[j]];
isPull[updatedPath] = key === '$pull' || key === '$pullAll';
} else if (key === '$unset') {
updatedValues[updatedPath] = undefined;
}
updatedKeys[updatedPath] = true;
}
}
}
if (!hasDollarUpdate) {
modifiedPaths(castedDoc, '', modified);
updatedValues = flatten(castedDoc, null, null, schema);
updatedKeys = Object.keys(updatedValues);
}
const updates = Object.keys(updatedValues);
const numUpdates = updates.length;
const validatorsToExecute = [];
const validationErrors = [];
const alreadyValidated = [];
const context = options && options.context === 'query' ? query : null;
function iter(i, v) {
const schemaPath = schema._getSchema(updates[i]);
if (schemaPath == null) {
return;
}
if (schemaPath.instance === 'Mixed' && schemaPath.path !== updates[i]) {
return;
}
if (v && Array.isArray(v.$in)) {
v.$in.forEach((v, i) => {
validatorsToExecute.push(function(callback) {
schemaPath.doValidate(
v,
function(err) {
if (err) {
err.path = updates[i] + '.$in.' + i;
validationErrors.push(err);
}
callback(null);
},
context,
{ updateValidator: true });
});
});
} else {
if (isPull[updates[i]] &&
schemaPath.$isMongooseArray) {
return;
}
if (schemaPath.$isMongooseDocumentArrayElement && v != null && v.$__ != null) {
alreadyValidated.push(updates[i]);
validatorsToExecute.push(function(callback) {
schemaPath.doValidate(v, function(err) {
if (err) {
err.path = updates[i];
validationErrors.push(err);
return callback(null);
}
v.validate(function(err) {
if (err) {
if (err.errors) {
for (const key of Object.keys(err.errors)) {
const _err = err.errors[key];
_err.path = updates[i] + '.' + key;
validationErrors.push(_err);
}
} else {
err.path = updates[i];
validationErrors.push(err);
}
}
callback(null);
});
}, context, { updateValidator: true });
});
} else {
validatorsToExecute.push(function(callback) {
for (const path of alreadyValidated) {
if (updates[i].startsWith(path + '.')) {
return callback(null);
}
}
schemaPath.doValidate(v, function(err) {
if (err) {
err.path = updates[i];
validationErrors.push(err);
}
callback(null);
}, context, { updateValidator: true });
});
}
}
}
for (i = 0; i < numUpdates; ++i) {
iter(i, updatedValues[updates[i]]);
}
const arrayUpdates = Object.keys(arrayAtomicUpdates);
for (const arrayUpdate of arrayUpdates) {
let schemaPath = schema._getSchema(arrayUpdate);
if (schemaPath && schemaPath.$isMongooseDocumentArray) {
validatorsToExecute.push(function(callback) {
schemaPath.doValidate(
arrayAtomicUpdates[arrayUpdate],
getValidationCallback(arrayUpdate, validationErrors, callback),
options && options.context === 'query' ? query : null);
});
} else {
schemaPath = schema._getSchema(arrayUpdate + '.0');
for (const atomicUpdate of arrayAtomicUpdates[arrayUpdate]) {
validatorsToExecute.push(function(callback) {
schemaPath.doValidate(
atomicUpdate,
getValidationCallback(arrayUpdate, validationErrors, callback),
options && options.context === 'query' ? query : null,
{ updateValidator: true });
});
}
}
}
if (callback != null) {
let numValidators = validatorsToExecute.length;
if (numValidators === 0) {
return _done(callback);
}
for (const validator of validatorsToExecute) {
validator(function() {
if (--numValidators <= 0) {
_done(callback);
}
});
}
return;
}
return function(callback) {
let numValidators = validatorsToExecute.length;
if (numValidators === 0) {
return _done(callback);
}
for (const validator of validatorsToExecute) {
validator(function() {
if (--numValidators <= 0) {
_done(callback);
}
});
}
};
function _done(callback) {
if (validationErrors.length) {
const err = new ValidationError(null);
for (const validationError of validationErrors) {
err.addError(validationError.path, validationError);
}
return callback(err);
}
callback(null);
}
function getValidationCallback(arrayUpdate, validationErrors, callback) {
return function(err) {
if (err) {
err.path = arrayUpdate;
validationErrors.push(err);
}
callback(null);
};
}
};