Simple Chat Room in NodeJS, expressJS and mongoDB in Docker Swarm
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'use strict';
const executeCommand = require('./db_ops').executeCommand;
const executeDbAdminCommand = require('./db_ops').executeDbAdminCommand;
/**
* Get ReplicaSet status
*
* @param {Admin} a collection instance.
* @param {Object} [options] Optional settings. See Admin.prototype.replSetGetStatus for a list of options.
* @param {Admin~resultCallback} [callback] The command result callback.
*/
function replSetGetStatus(admin, options, callback) {
executeDbAdminCommand(admin.s.db, { replSetGetStatus: 1 }, options, callback);
}
/**
* Retrieve this db's server status.
*
* @param {Admin} a collection instance.
* @param {Object} [options] Optional settings. See Admin.prototype.serverStatus for a list of options.
* @param {Admin~resultCallback} [callback] The command result callback
*/
function serverStatus(admin, options, callback) {
executeDbAdminCommand(admin.s.db, { serverStatus: 1 }, options, callback);
}
/**
* Validate an existing collection
*
* @param {Admin} a collection instance.
* @param {string} collectionName The name of the collection to validate.
* @param {Object} [options] Optional settings. See Admin.prototype.validateCollection for a list of options.
* @param {Admin~resultCallback} [callback] The command result callback.
*/
function validateCollection(admin, collectionName, options, callback) {
const command = { validate: collectionName };
const keys = Object.keys(options);
// Decorate command with extra options
for (let i = 0; i < keys.length; i++) {
if (options.hasOwnProperty(keys[i]) && keys[i] !== 'session') {
command[keys[i]] = options[keys[i]];
}
}
executeCommand(admin.s.db, command, options, (err, doc) => {
if (err != null) return callback(err, null);
if (doc.ok === 0) return callback(new Error('Error with validate command'), null);
if (doc.result != null && doc.result.constructor !== String)
return callback(new Error('Error with validation data'), null);
if (doc.result != null && doc.result.match(/exception|corrupt/) != null)
return callback(new Error('Error: invalid collection ' + collectionName), null);
if (doc.valid != null && !doc.valid)
return callback(new Error('Error: invalid collection ' + collectionName), null);
return callback(null, doc);
});
}
module.exports = { replSetGetStatus, serverStatus, validateCollection };