AMQP Notifier

A performant iPhone notification (APNs) system, that has an AMQP interface. The project is meant to be run as a standalone service, that maintains persistent connections to Apple servers. Clients of the service, simply need to enqueue notifications requests in a rabbitMQ queue.

How to Compile and Run

The project is built using Scala (Scala 2.7.7), and uses sbt for building:

Building:

sbt update compile test

Running:

sbt run  [configuration-file]

Configuration Files

A configuration file is needed to set the apns notification and rabbit mq details. The tool uses Configgy library for config files, and a sample file would look like

amqp {
    exchange = "notifier"
    queue = "notifier.notifications"
    routing = "notifier.notifications"
}

apns {
    keystore.path = "/path/to/apns/certificate.p12"
    keystore.pass = "apns_passcode"
}

log {
    filename = "/var/log/iphonenotifier.log"
    roll = "daily"
}

Expected Message Format

The AMPQ notifier expects JSON messages, that contain three properties:

token   -   The Device token the message should go to
payload -   The JSON payload, as specified by Apple
expiry (optional)   -   the expiration time of the message, specified in
            seconds from epoch

Sample message:

{
    "token": "1234567890abcdef...",
    "payload": { "aps": {"alert": "Hello World!"} }
}

Logging

The logging configuration is customizable. You have the option of using logback logger or the less expressive Configgy Logger.

Unfortunately, the option is specified in project/build/NotifierProject.scala, as the appropriate lines would need to be (de)commented out. Changing the options, require running

sbt update compile

Logback is a more capable and expressive logging system, but Configgy logger is easier to setup and configure.

Packaging

To bundle the project, you can run the shell script ./package.sh. The script would generate a deployable binary folder in ./target/dist. You can launch a daemon of the project by running the command

./target/dist/bin/notifier [config-file]

Please note that notifier requires the daemon. The pid file would live in /tmp/iphonenotifier.pid (when running as user), or in /var/run/iphonenotifier.pid (when running as root).