Wasabi A/B Testing Service is a real-time, enterprise-grade, 100% API driven project.
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README.md

Wasabi - A/B Testing Platform

Support: Join the chat at https://gitter.im/intuit/wasabi
Documentation: User Guide, JavaDocs
A/B Testing Overview: A/B Testing Overview Blog Meet Wasabi Blog Architecture Behind Wasabi
Continuous Integration: Build Status Coverage Status Maven Central
License: Apache 2

Project

Wasabi A/B Testing Service is a real-time, enterprise-grade, 100% API driven project. Users are empowered to own their own data, and run experiments across web, mobile, and desktop. It’s fast, easy to use, it’s chock full of features, and instrumentation is minimal.

Learn more about how Wasabi can empower your team to move from hunches to actionable, data-driven user insights with our simple, flexible, and scalable experimentation platform.

Features

  • Own your own data - Wasabi runs on your servers, in the cloud or on-premise, where you have complete control over your data.
  • Proven - Wasabi is battle-tested in production at Intuit, Inc., a financial technology company. Wasabi is the experimentation platform for TurboTax, QuickBooks, Mint.com, and other Intuit offerings.
  • High Performance - Consistent server-side response times for user assignments within 30ms.
  • 100% API-Driven - The Wasabi REST API is compatible with any language and environment.
  • Platform Agnostic - Uniform, consistent testing across Web, mobile, desktop. Also supports front-end, back-end integrations.
  • Real-time user assignments - Assign users into experiments in real time, to preserve traffic for other parallel A/B tests.
  • Cloud and on-premise - Designed to live in the cloud or in your own data center.
  • Analytics - Core experiment analytics and metrics visualization out of the box, as well as the ability to send data to your existing analytics infrastructure.
  • Pluggable - Well-defined interfaces for plugging in your own access control, sending data to data pipelines, and providing fully custom bucket allocations.
  • Experiment Management UI - Setup and manage experiments via a modern Web interface. Management via REST API is also possible.
  • Dockerized - Spin up a Wasabi Docker instance in 5 minutes and be in production with the platform, instrumentation, and experiments within a day.

User Interface

  • Create an experiment and its buckets:
  • Filter which customers are considered for your experiment:
  • Follow your currently running experiments:
  • Track your experiment results in real-time:

Get Started

The following steps will help you install the needed tools, then build and run a complete Wasabi stack.

Bootstrap Your Environment

Mac OS
% /usr/bin/ruby \
  -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
% brew install git
% git clone https://github.com/intuit/wasabi.git
% cd wasabi
% ./bin/wasabi.sh bootstrap

Installed tools include: homebrew 0.9, git 2, maven 3, java 1.8, docker 1.12, node 6 and python 2.7.

Ubuntu

Bootstrapping on Ubuntu requires sudo privileges to install all the required dependencies. You will be prompted to enter your password. Currently only 16.04 (x64) is supported.

% sudo apt-get install git
% git clone https://github.com/intuit/wasabi.git
% cd wasabi
% ./bin/wasabi.sh bootstrap
% sudo reboot

NOTE: A reboot is required after running the bootstrap command on Ubuntu.

For all other processes (build, start etc.) the commands are same for Ubuntu and Mac OS.

Installed tools include: git 2, maven 3, OpenJdk 8, docker 1.12, node 6 and python 2.7

Similar tooling will work for Windows. Contribute a patch :)

Start Wasabi

Now that we have the necessary tools in place, let's move on to build and start Wasabi, followed by issuing a ping command to verify the build:

% ./bin/wasabi.sh build start
...
wasabi is operational:

  ui: % open http://localhost:8080     note: sign in as admin/admin
  ping: % curl -i http://localhost:8080/api/v1/ping
  debug: attach to localhost:8180

% curl -i http://localhost:8080/api/v1/ping
HTTP/1.1 200 OK
Date: Wed, 25 May 2016 00:25:47 GMT
...
X-Application-Id: wasabi-api-20151215171929-SNAPSHOT-development
Content-Type: application/json
Transfer-Encoding: chunked
Server: Jetty(9.3.z-SNAPSHOT)

{
  "componentHealths":[
    {
      "componentName":"Experiments Cassandra",
      "healthy":true
    },
    {
      "componentName":"MySql","healthy":true
    }
  ],
  "wasabiVersion":"wasabi-api-20151215171929-SNAPSHOT-development"
}

Congratulations! You are the proud owner of a newly minted Wasabi instance. :)

Running Wasabi with remote storage

Set Mysql and Cassandra credentials
  • Modify /pom.xml to set the values that apply to your environment
Download Cassandra migration tool https://oss.sonatype.org/content/repositories/public/com/builtamont/cassandra-migration/0.9/cassandra-migration-0.9-jar-with-dependencies.jar
Set up your environment variables
  • Set location of the migration tool
export CASSANDRA_MIGRATION=/location/of/cassandra-migration-0.9-jar-with-dependencies.jar
  • Set location of migration scripts within your project
export MIGRATION_SCRIPT=/location/of/modules/repository-datastax/src/main/resources/com/intuit/wasabi/repository/impl/cassandra/migration
Set up Cassandra tables
CQLSH_VERSION=<version> CQLSH_USERNAME=<username> CQLSH_PASSWORD=<pwd> CQLSH_HOST=<host> bin/docker/migration.sh
Run Wasabi with env variables for remote storage hosts
MYSQL_HOST=<mysql_host> NODE_HOST=<cassandra_host> ./bin/wasabi.sh start:wasabi
Run Wasabi outside of docker with WASABI_CONFIGURATION for remote storage hosts
WASABI_CONFIGURATION="
  -Ddatabase.url.host=$MYSQL_HOST\
  -Ddatabase.url.port=$MYSQL_PORT\
  -Ddatabase.url.dbname=$MYSQL_DATABASE\
  -Ddatabase.user=$MYSQL_USER\
  -Ddatabase.password=$MYSQL_PASSWORD\
  -Ddatabase.pool.connections.min=$MYSQL_MIN_CONNECTIONS\
  -Ddatabase.pool.connections.max=$MYSQL_MAX_CONNECTIONS\
  -Dusername=$CASSANDRA_USER\
  -Dpassword=$CASSANDRA_PASSWORD\
  -DnodeHosts=$CASSANDRA_HOST\
  -DtokenAwareLoadBalancingLocalDC=$CASSANDRA_DATACENTER\
  -Dapplication.http.port=$PORT" bash usr/local/wasabi-main-*/bin/run

Troubleshooting

  • While starting Wasabi, if you see an error when the docker containers are starting up, you could do the following:

    • Look at the current docker containers that have been successfully started.
% ./bin/wasabi.sh status

CONTAINER ID        IMAGE                    COMMAND                  CREATED             STATUS              PORTS                                                                     NAMES
8c12458057ef        wasabi-main              "entrypoint.sh wasabi"   25 minutes ago      Up 25 minutes       0.0.0.0:8080->8080/tcp, 0.0.0.0:8090->8090/tcp, 0.0.0.0:8180->8180/tcp    wasabi-main
979ecc885239        mysql:5.6                "docker-entrypoint.sh"   26 minutes ago      Up 26 minutes       0.0.0.0:3306->3306/tcp                                                    wasabi-mysql
2d33a96abdcb        cassandra:2.1            "/docker-entrypoint.s"   27 minutes ago      Up 27 minutes       7000-7001/tcp, 0.0.0.0:9042->9042/tcp, 7199/tcp, 0.0.0.0:9160->9160/tcp   wasabi-cassandra
  • The above shell output shows a successful start of 3 docker containers needed by Wasabi: wasabi-main (the Wasabi server), wasabi-mysql, and wasabi-cassandra. If any of these are not running, try starting them individually. For example, if the MySQL container is running, but Cassandra and Wasabi containers failed to start (perhaps due to a network timeout docker could not download the Cassandra image), do the following:
% ./bin/wasabi.sh start:cassandra

% ./bin/wasabi.sh start:wasabi

Call Wasabi

These are the 3 common REST endpoints that you will use to instrument your client application with Wasabi.

Let's assume that you've created and started an experiment, 'BuyButton,' in the 'Demo_App' application with the following buckets:

  • 'BucketA': green button (control bucket)
  • 'BucketB': orange button bucket

You can assign a user with a unique ID (e.g. 'userID1') to the experiment by making this HTTP request:

Assign a user to experiment and bucket:

% curl -H "Content-Type: application/json" \
    http://localhost:8080/api/v1/assignments/applications/Demo_App/experiments/BuyButton/users/userID1

{  
   "cache":true,
   "payload":"green",
   "assignment":"BucketA",
   "context":"PROD",
   "status":"NEW_ASSIGNMENT"
}

Now the 'userID1' user is assigned into the 'BucketA' bucket. Let's further record an impression, meaning the user has seen a given experience:

Record an impression:

% curl -H "Content-Type: application/json" \
    -d "{\"events\":[{\"name\":\"IMPRESSION\"}]}" \
    http://localhost:8080/api/v1/events/applications/Demo_App/experiments/BuyButton/users/userID1

If the 'userID1' user performs an action such as clicking the Buy button, you'd record that action with the following request:

Record an action:

% curl -H "Content-Type: application/json" \
    -d "{\"events\":[{\"name\":\"BuyClicked\"}]}" \
    http://localhost:8080/api/v1/events/applications/Demo_App/experiments/BuyButton/users/userID1

Explore Various Resources

The following developer resources are available:

API: Swagger API playground

% ./bin/wasabi.sh resource:api

Javadoc

% ./bin/wasabi.sh resource:doc

Wasabi UI

% ./bin/wasabi.sh resource:ui

Cassandra: cqlsh shell

% ./bin/wasabi.sh resource:cassandra

MySQL: mysql shell

% ./bin/wasabi.sh resource:mysql

Java Debugger: Remote attach configuration

-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=8180

Stop Wasabi

Alas, all good things must come to an end. Let's clean things up a bit stop the newly created Wasabi stack:

At this point in time, we now have all the requisite tools installed, and subsequent invocations of Wasabi will start up much more quickly.

% ./bin/wasabi.sh stop

Get Familiar with wasabi.sh

Further, there are a number of additional wasabi.sh options available you should become familiar with:

% ./bin/wasabi.sh --help

  usage: wasabi.sh [options] [commands]

  options:
    -e | --endpoint [ host:port ]          : api endpoint; default: localhost:8080
    -v | --verify [ true | false ]         : verify installation configuration; default: false
    -s | --sleep [ sleep-time ]            : sleep/wait time in seconds; default: 30
    -h | --help                            : help message

  commands:
    bootstrap                              : install dependencies
    build                                  : build project
    start[:cassandra,mysql,wasabi]         : start all, cassandra, mysql, wasabi
    test                                   : test wasabi
    stop[:wasabi,cassandra,mysql]          : stop all, wasabi, cassandra, mysql
    resource[:ui,api,doc,cassandra,mysql]  : open resource api, javadoc, cassandra, mysql
    status                                 : display resource status
    remove[:wasabi,cassandra,mysql]        : remove all, wasabi, cassandra, mysql
    package                                : build deployable packages
    release[:start,finish]                 : promote release

Develop

Build and Run Wasabi Server

% mvn package
% ./bin/wasabi.sh start:cassandra,mysql
% (cd modules/main/target; \
    WASABI_CONFIGURATION="-DnodeHosts=localhost -Ddatabase.url.host=localhost" ./wasabi-main-*-SNAPSHOT-development/bin/run) &
% curl -i http://localhost:8080/api/v1/ping
...

The runtime logs can be accessed executing the following command in a another shell:

Viewing runtime logs:

% tail -f modules/main/target/wasabi-main-*-SNAPSHOT-development/logs/wasabi-main-*-SNAPSHOT-development.log

Build and Run Wasabi UI

% cd modules/ui
% grunt build
% grunt serve

Stop Wasabi

% ./bin/wasabi.sh stop

Now while that was fun, in all likelihood you will be using an IDE to work on Wasabi. In doing so, you need only add the configuration information above to the JVM commandline prior to startup:

Wasabi runtime configuration:

-DnodeHosts=localhost -Ddatabase.url.host=localhost

Run Integration Tests

Code changes can readily be verified by running the growing collection of included integration tests:

% ./bin/wasabi.sh start test stop
Troubleshooting

Integration tests might fail intermittently due to a time drift issue in docker containers on Mac OSX.

When the Mac sleeps and wakes back up, there is a lag created between the clock in the Mac vs the running docker containers. This is a known issue in Docker for Mac.

This can be fixed by running the following command:

% docker run --rm --privileged alpine hwclock -s

The above command will need to be run every time when there is a time drift.

To automatically run this command and update the time each time the Mac wakes up, you could install the following agent:

% curl https://raw.githubusercontent.com/arunvelsriram/docker-time-sync-agent/master/install.sh | bash

You can read more about this at: quick-tip-fixing-time-drift-issue-on-docker-for-mac

Package and Deploy at Scale

Wasabi can readily be packaged as installable rpm or deb distributions and deployed at scale as follows:

Package by running integration tests 1st:

% ./bin/wasabi.sh start package

Package without integration tests, if needed:

% ./bin/wasabi.sh -t false package

Find generated package files:

% find . -type f \( -name "*.rpm" -or -name "*.deb" \)

Note: Java 8 is a runtime dependency

Integrate

Wasabi is readily embeddable via the following maven dependency GAV family:

<dependency>
    <groupId>com.intuit.wasabi</groupId>
    <artifactId>wasabi</artifactId>
    <version>1.0.20160627213750<build_timestamp></version>
</dependency>

Contribute

We greatly encourage contributions! You can add new features, report and fix existing bugs, write docs and tutorials, or any of the above. Feel free to open issues and/or send pull requests.

The master branch of this repository contains the latest stable release of Wasabi, while snapshots are published to the develop branch. In general, pull requests should be submitted against develop by forking this repo into your account, developing and testing your changes, and creating pull requests to request merges. See the Contributing to a Project article for more details about how to contribute in general and find more specific information on how to write code for Wasabi in our user guide.

Extension projects such as browser plugins, client integration libraries, and apps can be contributed under the contrib directory.

Steps to contribute:

  1. Fork this repository into your account on Github
  2. Clone your forked repository (not our original one) to your hard drive with git clone https://github.com/YOURUSERNAME/wasabi.git
  3. Design and develop your changes
  4. Add/update unit tests
  5. Add/update integration tests
  6. Add/update documentation on gh-pages branch
  7. Create a pull request for review to request merge
  8. Obtain 2 approval squirrels before your changes can be merged

Thank you for your contribution!