Class: HQ::GrapherIcingaPerfdata::Script

Inherits:
Object
  • Object
show all
Defined in:
lib/hq/grapher-icinga-perfdata/script.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#args ⇒ Object

Returns the value of attribute args.



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# File 'lib/hq/grapher-icinga-perfdata/script.rb', line 11

def args
  @args
end

#status ⇒ Object

Returns the value of attribute status.



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# File 'lib/hq/grapher-icinga-perfdata/script.rb', line 12

def status
  @status
end

#stderr ⇒ Object

Returns the value of attribute stderr.



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# File 'lib/hq/grapher-icinga-perfdata/script.rb', line 15

def stderr
  @stderr
end

#stdout ⇒ Object

Returns the value of attribute stdout.



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# File 'lib/hq/grapher-icinga-perfdata/script.rb', line 14

def stdout
  @stdout
end

Instance Method Details

#main ⇒ Object 



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# File 'lib/hq/grapher-icinga-perfdata/script.rb', line 17

def main

	process_args

	read_config

	@args.each do
		|filename|
		process_file filename
	end

	@status = 0

end

#parse_data(rest) ⇒ Object 



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# File 'lib/hq/grapher-icinga-perfdata/script.rb', line 119

def parse_data rest

	return [] if rest =~ /^\s*$/

	regexp =
		/^
			(?:
				([^' ]+)
			|
				'((?:[^']|'')*)'
			) =
			(-?\d+(?:\.[\d]+)?)
			(?:\S*)
			(?:\s(.+))?
		$/x

	match_data = regexp.match rest

	return nil unless match_data

	name = match_data[1] || match_data[2]
	name.gsub! "''", "'"

	value = match_data[3]

	new_rest = match_data[4]

	return [
		[ name, value ],
		* new_rest ? parse_data(new_rest) : [],
	]

end

#process_args ⇒ Object 



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# File 'lib/hq/grapher-icinga-perfdata/script.rb', line 32

def process_args

	@opts, @args =
		Tools::Getopt.process @args, [

		{ :name => :config,
			:required => true },

	]

end

#process_file(filename) ⇒ Object 



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# File 'lib/hq/grapher-icinga-perfdata/script.rb', line 76

def process_file filename

	File.open filename, "r" do
		|file_io|

		while line = file_io.gets

			timestamp_str, host, service, data_str =
				line.split ",", 4

			timestamp = timestamp_str.to_i

			data = Hash[
				parse_data(data_str),
			]

			mapping_key = {
				host: host,
				service: service,
			}

			mapping = @mappings[mapping_key]

			next unless mapping

			RRD::Wrapper.update \
				"--daemon",
				"%s:%s" % [
					@daemon_elem["host"],
					@daemon_elem["port"],
				],
				"%s.rrd" % mapping[:name],
				[
					timestamp_str,
					* mapping[:values].map { |name| data[name] || "U" },
				].join(":")

		end

	end

end

#read_config ⇒ Object 



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# File 'lib/hq/grapher-icinga-perfdata/script.rb', line 44

def read_config

	config_doc =
		XML::Document.file @opts[:config]

	@config_elem =
		config_doc.root

	@daemon_elem =
		@config_elem.find_first("daemon")

	@mappings = Hash[
		@config_elem.find("mapping").map {
			|mapping_elem|
			[
				{
					host: mapping_elem["host"],
					service: mapping_elem["service"],
				},
				{
					name: mapping_elem["name"],
					values: mapping_elem.find("value").map {
						|value_elem|
						value_elem["name"]
					}
				},
			]
		}
	]

end