ColdFusion event gateway to subscribe to a Redis pub/sub channel.
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README.md

#ColdFusion Redis Sub Gateway#

This is a ColdFusion event gateway that allows you to subscribe to a Redis pub/sub channel. This implementation is based on the Jedis Redis client.

Installing the Gateway

  • Downlaod the cf-redis-sub-gateway-X.X.zip package from Github.
  • Extract the archive and copy the cf-redis-sub-gateway-X.X.jar, and the jedis-2.1.0.jar to the ColdFusion classpath.
    • The best place to put these jars is in the {cfusion.root}/gateway/lib folder. For example C:\ColdFusion10\cfusion\gateway\lib or /Applications/ColdFusion10/cfusion/gateway
  • Restart ColdFusion, if necessary.
  • Log in to the ColdFusion administrator and navigate to the Event Gateways > Gateway Types page.
  • Under Add / Edit ColdFusion Event Gateway Types enter the following:
    • Type Name: RedisSub
    • Description: Handles messages from a Redis pub/sub channel
    • Java Class: com.newschuyl.redisgateway.RedisSubGateway
    • Startup Timeout: 30 seconds
    • Stop on Startup Timeout: checked

Configuring the Gateway

  • Log in to the ColdFusion administrator and navigate to the Event Gateways > Gateway Instances page.
  • Under Add / Edit ColdFusion Event Gateway Instances enter the following:
    • Gateway ID: An name for your gateway instance.
    • Gateway Type: RedisSub - Handles messages from a Redis Pub/Sub channel
    • CFC Path: Path to the CFC listner. For more about the listener CFC see Handling Incoming Messages.
    • Configuration File: The path to the (optional) configuration file. If not provided the gateway will subscribe to the cfredis channel on a local Redis server (127.0.0.1:6379). Below is a sample configuration file.
# host - The redis host, default is localhost
host=127.0.0.1
# port - The redis port, default is 6379
port=6379
# auth - The redis server password, if the server has requirepass set
auth=foobared
# channel - The channel to subscribe to, the default is cfredis
channel=foo.bar

Handling Incoming Messages

Events

The CFC listener must implement the following method:

  • onIncomingMessage(event) - fires when a message is received on the pub/sub channel. The event has the following fields:
    • CfcMethod: Listener CFC method, onIncomingMessage in this case
    • Data.CHANNEL: The name of the Redis pub/sub channel
    • Data.MESSAGE: Message contents
    • GatewayType: Always "RedisSub"
    • OriginatorID: Always "RedisSubGateway"