41 lines
1.3 KiB
Plaintext
41 lines
1.3 KiB
Plaintext
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#!/usr/bin/env ruby
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require 'rubygems'
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require 'json'
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require 'open-uri'
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if ARGV.first == 'config'
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puts 'graph_category Apache'
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puts 'graph_title Requests per second'
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puts 'graph_vlabel reqs/sec'
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puts 'graph_scale no'
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puts 'requests_per_second.label Apache reqs/sec'
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exit 0
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end
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STATUS_URL = 'http://localhost/server-status?auto'
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TMPFILE = '/tmp/apache-status-monitor'
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SECONDS_BEFORE_STALE = 900
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begin
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previous_sample = File.exists?(TMPFILE) ? JSON.parse(File.open(TMPFILE, 'r').read) : {}
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output = {}
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apache_status = open(STATUS_URL).read
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new_total_requests = apache_status.match(/Total Accesses: (\d+)$/)[1].to_i #subtract one to account for request we just made!
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sample_duration = previous_sample['updated_at'] ? Time.now - Time.at(previous_sample['updated_at'].to_i) : nil
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if sample_duration && sample_duration < SECONDS_BEFORE_STALE
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output['requests_per_second'] = "%0.2f" % ((new_total_requests - 1 - previous_sample['total_requests'].to_i) / sample_duration.to_f)
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else
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output = {}
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end
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# Write back to tmpfile
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new_tmp_data = {'total_requests' => new_total_requests, 'updated_at' => Time.now.to_i}
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File.open(TMPFILE, 'w') { |f| f.puts(new_tmp_data.to_json)}
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puts "requests_per_second.value #{output['requests_per_second']}"
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rescue Exception => e
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puts "Exception: #{e.message}"
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exit -1
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end
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