Overview

This is the base layer for the Apache Flume charms. It will handle installing the Apache Flume libraries and any dependencies, and provides helpers to configure Flume.

Usage

To create a charm layer using this base layer, you need only include it in a layer.yaml file:

includes: ['layer:flume-base']

This will implicitly include the reactive base layer, which you can see for more information on using layers in charms.

Reactive States

This layer will set the following states:

• flume-base.installed This will be set when the Apache Flume libraries are installed. Once this is set, you can configure Flume using the method:

  • configure_flume(template_data=None) This will render the Flume config from the template file templates/flume.conf.j2 and will pass in the keys and values in the template_data dict, if given, along with a config variable containing all of the charm config options.

An example using this layer:

from charmhelpers.core import hookenv
from jujubigdata.utils import DistConfig
from charms.layer.flume_base import Flume

@when('flume-base.installed', 'flume-sink.ready')
def configure(sink):
    flume = Flume(DistConfig())
    flume.configure_flume({
        'agents': sink.agents(),
    })
    flume.start()
    hookenv.status_set('active', 'Ready')

Contact Information

• bigdata@lists.ubuntu.com

Resources

• Apache Flume home page
• Apache Flume bug tracker
• Apache Flume mailing lists
• #juju on irc.freenode.net