Simple Chat Room in NodeJS, expressJS and mongoDB in Docker Swarm
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'use strict';
const Aspect = require('./operation').Aspect;
const CommandOperation = require('./command');
const defineAspects = require('./operation').defineAspects;
const crypto = require('crypto');
const handleCallback = require('../utils').handleCallback;
const toError = require('../utils').toError;
class AddUserOperation extends CommandOperation {
constructor(db, username, password, options) {
super(db, options);
this.username = username;
this.password = password;
}
_buildCommand() {
const db = this.db;
const username = this.username;
const password = this.password;
const options = this.options;
// Get additional values
let roles = Array.isArray(options.roles) ? options.roles : [];
// If not roles defined print deprecated message
// TODO: handle deprecation properly
if (roles.length === 0) {
console.log('Creating a user without roles is deprecated in MongoDB >= 2.6');
}
// Check the db name and add roles if needed
if (
(db.databaseName.toLowerCase() === 'admin' || options.dbName === 'admin') &&
!Array.isArray(options.roles)
) {
roles = ['root'];
} else if (!Array.isArray(options.roles)) {
roles = ['dbOwner'];
}
const digestPassword = db.s.topology.lastIsMaster().maxWireVersion >= 7;
let userPassword = password;
if (!digestPassword) {
// Use node md5 generator
const md5 = crypto.createHash('md5');
// Generate keys used for authentication
md5.update(username + ':mongo:' + password);
userPassword = md5.digest('hex');
}
// Build the command to execute
const command = {
createUser: username,
customData: options.customData || {},
roles: roles,
digestPassword
};
// No password
if (typeof password === 'string') {
command.pwd = userPassword;
}
return command;
}
execute(callback) {
const options = this.options;
// Error out if digestPassword set
if (options.digestPassword != null) {
return callback(
toError(
"The digestPassword option is not supported via add_user. Please use db.command('createUser', ...) instead for this option."
)
);
}
// Attempt to execute auth command
super.execute((err, r) => {
if (!err) {
return handleCallback(callback, err, r);
}
return handleCallback(callback, err, null);
});
}
}
defineAspects(AddUserOperation, Aspect.WRITE_OPERATION);
module.exports = AddUserOperation;