class Splash::Logs::LogScanner

Log scanner and notifier

Public Class Methods

new() click to toggle source

LogScanner Constructor : initialize prometheus metrics return [Splash::Logs::LogScanner]

# File lib/splash/logs.rb, line 94
def initialize
  @logs_target = Marshal.load(Marshal.dump(get_config.logs))
  @config = get_config

end

Public Instance Methods

analyse() click to toggle source

start log analyse for log target in config @return [Hash] Exiter case :quiet_exit

# File lib/splash/logs.rb, line 103
def analyse
  @logs_target.each do |record|
    record[:count]=0 if record[:count].nil?
    record[:status] = :clean if record[:status].nil?
    if File.exist?(record[:log]) then
      record[:count] = File.readlines(record[:log]).grep(/#{record[:pattern]}/).size
      record[:status] = :matched if record[:count] > 0
      record[:lines] = `wc -l "#{record[:log]}"`.strip.split(/\s+/)[0].to_i unless record[:status] == :missing
    else
      record[:status] = :missing
    end
  end
  return {:case => :quiet_exit }
end
notify(options = {}) click to toggle source

start notification on prometheus for metric logerrors, logmissing; loglines @param [Hash] options @option options [String] :session a session number for log daemon @return [Hash] Exiter case :quiet_exit

# File lib/splash/logs.rb, line 128
def notify(options = {})
  log = get_logger
  unless verify_service url: @config.prometheus_pushgateway_url then
    return  { :case => :service_dependence_missing, :more => "Prometheus Notification not send." }
  end
  session = (options[:session]) ? options[:session] : log.get_session
  log.info "Sending metrics to Prometheus Pushgateway", session
  @logs_target.each do |item|
    logsrec = LogsRecords::new item[:label]
    errors = (item[:count])? item[:count] : 0
    lines = (item[:lines])? item[:lines] : 0
    missing = (item[:status] == :missing)? 1 : 0
    file = item[:log]
    logsrec.purge(item[:retention])
    logsrec.add_record :status => item[:status],
                     :errors => errors,
                     :lines => lines,
                     :file => file

    logsmonitor = LogsNotifier::new({name: item[:label], missing: missing, file: file, errors: errors, lines: lines})
    if logsmonitor.notify then
      log.ok "Sending metrics for log #{file} to Prometheus Pushgateway", session
    else
      log.ko "Failed to send metrics for log #{file} to Prometheus Pushgateway", session
    end
  end
  return {:case => :quiet_exit }
end
output() click to toggle source

pseudo-accessor on @logs_target @return [Hash] the logs structure

# File lib/splash/logs.rb, line 120
def output
  return @logs_target
end