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module Longboat
class Raiders
def initialize(collector, config)
@collector = collector
@raiders = {}
@config = config
@config[:raiders_path].each do |dir|
next unless Dir.exist?(dir)
Dir.entries(dir).each do |file|
next unless file =~ /\A(?![._])[a-zA-Z0-9]+(?:_[a-zA-Z0-9]+)*\.rb\Z/
reqname = File.basename(file, ".rb")
cname = reqname.split('_').map(&:capitalize).join
require "#{dir}/#{reqname}"
@raiders[reqname] = Kernel.const_get(cname).new(@collector, raider_config)
end
end
end
def raid!
@raiders.each do |name, raider|
@collector.begin!
begin
start_time = Time.now
raider.raid
end_time = Time.now
time_taken = end_time - start_time
@collector.report!(
"longboat_meta_raider_runtime",
(time_taken.to_f * 1000).to_i,
help: "Time taken by a raider whilst raiding in ms",
type: "guage",
labels: {raider: name}
)
@collector.commit!
rescue Exception => e
@collector.abort!
$stderr.puts "[ERROR] Caught exception from raider: #{name}"
$stderr.puts "[ERROR] Aborted collector transaction"
$stderr.puts "[ERROR] Backtrace reads: \"#{e.backtrace}\""
end
end
end
def raid_every(time = @config[:raid_every], async = true)
if async
Thread.new do
loop do
raid!
sleep(time)
end
end
else
loop do
raid!
sleep(time)
end
end
end
private
def raider_config
@config.slice(:raid_every, :metric_prefix)
end
end
end
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