chef.rb

include_recipe "collectd"

class ChefCollectdPluginReportHandler < Chef::Handler
  def report
    Chef::Log.info('Running collectd hander')
    node[:last_success_time] = Time.now.to_f
    node[:error_count_since_success] = 0
    node.save
  end
end

class ChefCollectdPluginErrorHandler < Chef::Handler
  def report
    node[:last_error_time] = Time.now.to_f
    if not node.include? :error_count
      node[:error_count] = 0
    end
    node[:error_count] += 1
    if not node.include? :error_count_since_success
      node[:error_count_since_success] = 0
    end
    node[:error_count_since_success] += 1
    node.save
  end
end

# Remove any previous instances so we don't end up with more than one
# This cannot use is_a? since the class gets recompiled on each run
#Chef::Config.report_handlers.delete_if {|v| v.class.to_s.include? 'ChefCollectdPluginReportHandler'}
Chef::Config.report_handlers.delete_if {|v| v.is_a? ChefCollectdPluginReportHandler}
Chef::Config.report_handlers << ChefCollectdPluginReportHandler.new

Chef::Config.exception_handlers.delete_if {|v| v.class.to_s.include? 'ChefCollectdPluginErrorHandler'}
Chef::Config.exception_handlers << ChefCollectdPluginErrorHandler.new

client.log

[Wed, 24 Nov 2010 19:02:29 -0800] INFO: Daemonizing..
[Wed, 24 Nov 2010 19:02:29 -0800] INFO: Forked, in 30315. Priveleges: 0 0
[Wed, 24 Nov 2010 19:02:34 -0800] INFO: Starting Chef Run (Version 0.9.8)
[Wed, 24 Nov 2010 19:02:34 -0800] INFO: Storing updated cookbooks/collectd_plugins/recipes/chef.rb in the cache.
[Wed, 24 Nov 2010 19:02:36 -0800] INFO: Ran execute[apt-get update] successfully
[Wed, 24 Nov 2010 19:02:37 -0800] INFO: Chef Run complete in 3.091286 seconds
[Wed, 24 Nov 2010 19:02:37 -0800] INFO: Running report handlers
[Wed, 24 Nov 2010 19:02:37 -0800] INFO: Running collectd hander
[Wed, 24 Nov 2010 19:02:37 -0800] INFO: Report handlers complete
[Wed, 24 Nov 2010 19:03:43 -0800] INFO: Starting Chef Run (Version 0.9.8)
[Wed, 24 Nov 2010 19:03:45 -0800] INFO: Ran execute[apt-get update] successfully
[Wed, 24 Nov 2010 19:03:46 -0800] INFO: Chef Run complete in 3.656005 seconds
[Wed, 24 Nov 2010 19:03:46 -0800] INFO: Running report handlers
[Wed, 24 Nov 2010 19:03:46 -0800] INFO: Running collectd hander
[Wed, 24 Nov 2010 19:03:47 -0800] INFO: Running collectd hander
[Wed, 24 Nov 2010 19:03:47 -0800] INFO: Report handlers complete
[Wed, 24 Nov 2010 19:05:01 -0800] INFO: Starting Chef Run (Version 0.9.8)
[Wed, 24 Nov 2010 19:05:03 -0800] INFO: Ran execute[apt-get update] successfully
[Wed, 24 Nov 2010 19:05:04 -0800] INFO: Chef Run complete in 3.080184 seconds
[Wed, 24 Nov 2010 19:05:04 -0800] INFO: Running report handlers
[Wed, 24 Nov 2010 19:05:04 -0800] INFO: Running collectd hander
[Wed, 24 Nov 2010 19:05:05 -0800] INFO: Running collectd hander
[Wed, 24 Nov 2010 19:05:05 -0800] INFO: Running collectd hander
[Wed, 24 Nov 2010 19:05:05 -0800] INFO: Report handlers complete
[Wed, 24 Nov 2010 19:06:14 -0800] INFO: Starting Chef Run (Version 0.9.8)
[Wed, 24 Nov 2010 19:06:15 -0800] INFO: Ran execute[apt-get update] successfully
[Wed, 24 Nov 2010 19:06:17 -0800] INFO: Chef Run complete in 3.256612 seconds
[Wed, 24 Nov 2010 19:06:17 -0800] INFO: Running report handlers
[Wed, 24 Nov 2010 19:06:17 -0800] INFO: Running collectd hander
[Wed, 24 Nov 2010 19:06:17 -0800] INFO: Running collectd hander
[Wed, 24 Nov 2010 19:06:17 -0800] INFO: Running collectd hander
[Wed, 24 Nov 2010 19:06:17 -0800] INFO: Running collectd hander
[Wed, 24 Nov 2010 19:06:18 -0800] INFO: Report handlers complete
[Wed, 24 Nov 2010 19:07:39 -0800] INFO: Starting Chef Run (Version 0.9.8)
[Wed, 24 Nov 2010 19:07:41 -0800] INFO: Ran execute[apt-get update] successfully
[Wed, 24 Nov 2010 19:07:50 -0800] INFO: Chef Run complete in 10.38472 seconds
[Wed, 24 Nov 2010 19:07:50 -0800] INFO: Running report handlers
[Wed, 24 Nov 2010 19:07:50 -0800] INFO: Running collectd hander
[Wed, 24 Nov 2010 19:07:50 -0800] INFO: Running collectd hander
[Wed, 24 Nov 2010 19:07:50 -0800] INFO: Running collectd hander
[Wed, 24 Nov 2010 19:07:51 -0800] INFO: Running collectd hander
[Wed, 24 Nov 2010 19:07:51 -0800] INFO: Running collectd hander
[Wed, 24 Nov 2010 19:07:51 -0800] INFO: Report handlers complete