Source plugin for sending heartbeats in colomanager message format for Fluentd

Requirements

fluent-plugin-record-modifier	fluentd	ruby
>= 1.0.0	>= v0.14.0	>= 2.1
< 1.0.0	>= v0.12.0	>= 1.9

Configuration

<source>
    @type heartbeat
    tag heartbeat
    interval 10
    coloId SJC2
</source>

Will send colomanager heartbeat message every 10 seconds with the coloId of SJC2

Message format

{
    "timestamp": 1518222029,
    "event": "heartbeat",
    "data": {
        "coloManagerId": "SJC2"
    }
}