plugin-apache/init.lua at master · graphdat/plugin-apache · GitHub

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localframework=require('framework')
localurl=require('url')
localPlugin=framework.Plugin
localWebRequestDataSource=framework.WebRequestDataSource
localAccumulator=framework.Accumulator

localgsplit=framework.string.gsplit
localsplit=framework.string.split
localauth=framework.util.auth

localparams=framework.params

localoptions=url.parse(params.url)
options.path=options.path..'?auto' -- server-status?auto for text/plain output
options.auth=auth(params.username, params.password)
options.wait_for_end=true

localmapping= {
 ['BusyWorkers'] ='APACHE_BUSY_WORKERS',
 ['IdleWorkers'] ='APACHE_IDLE_WORKERS',
 ['Total Accesses'] ='APACHE_REQUESTS',
 ['CPULoad'] ='APACHE_CPU',
 ['Total kBytes'] ='APACHE_BYTES'
}

localdata_source=WebRequestDataSource:new(options)
localacc=Accumulator:new()

localplugin=Plugin:new(params, data_source)
functionplugin:onParseValues(data, _)

-- Capture metrics
localresult= {}
forvingsplit(data, "\n") do
localm=split(v, ":")
localkey, val=unpack(m)
if (keyandval) then
localmetric=mapping[key]
ifmetricthen
result[metric] =tonumber(val) or-1
end
end
end

-- CPU Load calculations
localcpu_load=result['APACHE_CPU'] or0
if (cpu_load>1) then
cpu_load=cpu_load/100
end
result['APACHE_CPU'] =cpu_load

-- Requests calculation
localrequests=acc:accumulate('APACHE_REQUESTS', result['APACHE_REQUESTS'])
result['APACHE_REQUESTS'] =requests

-- Total Bytes calculation
-- Because of the interval cut off lines, on a really slow site you will get 0's
-- the, use the previous value if that happens
locallast_total_bytes=acc:get('APACHE_BYTES')
localtotal_bytes=acc:accumulate('APACHE_BYTES', result['APACHE_BYTES'] *1024)
ifrequests>0andtotal_bytes==0then
total_bytes=last_total_bytes
end
result['APACHE_BYTES'] =total_bytes

-- Total Bytes Per Request calculation
localbytes_per_req= (requests>0) and (total_bytes/requests) or0
result['APACHE_BYTES_PER_REQUEST'] =bytes_per_req

-- Busy Ratio calculation
localtotal_workers= (result['APACHE_BUSY_WORKERS'] or0) + (result['APACHE_IDLE_WORKERS'] or0)
localbusy_ratio=total_workersandresult['APACHE_BUSY_WORKERS'] /total_workersor0
result['APACHE_BUSY_RATIO'] =busy_ratio

returnresult
end
plugin:run()