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Acme Air in NodeJS

An implementation of the Acme Air sample application for NodeJS. This implementation can support multiple datastores, can run in several application modes, and can support running on a variety of runtime platforms including standalone bare metal system, Virtual Machines, docker containers, IBM Bluemix, IBM Bluemix Container Service.

Content

Runtime Environment

NodeJs

Datastore Choices

Environment variable dbtype is used to determine the datastore choice. MongoDB is default. See under "More on configurations".

Application Mode

Environment variable AUTH_SERVICE is use to determine when Micro-Service is used. Default is Monolitic. See under "More on configurations".

Monolithic

One NodeJS application. The default mode.

Micro-Service

Main NodeJS application delegates to authorization service NodeJS application hosted on host:port, defined in AUTH_SERVICE

Application Run Platforms

  • [Bluemix Instructions] (README_Bluemix.md)
  • [Docker Instructions] (README_Docker.md)
  • [Bluemix Container Service Instructions] (README_Bluemix_Container.md)

How to get started

Assume MongoDB started on 127.0.0.1:27017

Resolve module dependencies

npm install

Run Acmeair in Monolithic on Local

node app.js

Run Acmeair in Micro-Service on Local

node authservice-app.js
set AUTH_SERVICE=localhost:9443 or export AUTH_SERVICE=localhost:9443
node app.js

Run Acmeair in Micro-Service with Netflix Hystrix Stream enabled on Local

node authservice-app.js
set AUTH_SERVICE=localhost:9443 or export AUTH_SERVICE=localhost:9443
set enableHystrix=true or export enableHystrix=true

node app.js

Access Application

http://localhost:9080/

Load Database 
	preload 10k customers uid[0..9999]@email.com:password, 5 days' flights.  Defined in loader/loader-settings.json
Login
Flights
	such as Singapore to HongKong or Paris to Moscow 
Checkin
	cancel some booked flights
Account
	update account info
Logout	

If hystrix is enabled, it is available at : http://localhost:9080/rest/api/hystrix.stream

More on Configurations

Environment Variables

Name Default Meaning
dbtype mongo You can switch between mongo,cloudant,cassandra for datastore choices. When running on Bluemix, dbtype is automactially discovered from the service the application is bound to.
AUTH_SERVICE By default, there is only one main NodeJS application for all logics. When defined, in the format of host:port, it enables Micro-Service mode, main NodeJS application delegates to authorization service NodeJS application hosted on host:port.
enableHystrix false setting it to true will enable hystrix stream available at /rest/api/hystrix.stream
MONGO_URL Mongo database URL. Take precedence over other settings
CLOUDANT_URL Cloudant database URL. Take precedence over other settings
CASSANDRA_CP Cassandra Contact Points. Take precedence over other settings
CASSANDRA_KS Cassandra keyspace. Take precedence over other settings

Configuration for Runtime

Default values are defined here

Name Default Meaning
mongoHost 127.0.0.1 MongoDB host ip
mongoPort 27017 MongoDB port
mongoConnectionPoolSize 10 MongoDB connection pool size
cloudant_host Cloudant database host name
cloudant_port 443 Cloudant database port
cloudant_username Cloudant database username/API key
cloudant_password Cloudant database password
cloudant_httpclient.maxTotal 200 Cloudant http client max connections
cloudant_httpclient.maxPerRoute 100 Cloudant http client connections per route
cloudant_httpclient.soTimeout 5000 Cloudant http client socket timeout
cloudant_httpclient.connectionTimeout 5000 Cloudant http client connection timeout
cassandra_contactPoints Cassandra contact points
cassandra_keyspace acmeair_keyspace Cassandra keyspace
  • When running on Bluemix, datasource url will be read from bound service information.
  • For Cloudant, you need to follow instruction to create database and define search index.
  • For Cassandra, you need to follow instruction to create keyspace and tables.

Configuration for Preload

Default values are defined here

Name Default Meaning
MAX_CUSTOMERS 10000 number of customers
MAX_DAYS_TO_SCHEDULE_FLIGHTS 5 max number of days to schedule flights
MAX_FLIGHTS_PER_DAY 1 max flights per day

Other Topics

How to extend with more datasource types

  • Create a folder under dataaccess with the new dbtype name. Look at current implementation for reference.

Data consistency with Acmeair Java

The data format is NOT the same as Acmeair Java. The impact:

  • You can not share database with Acmeair Java.
  • When drive acmeair workload, you need follow the instruction to use -DusePureIDs=true when starting jmeter.