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Merge pull request #62 from sschneid/metric_calc_via_helper
Metric calc via helpers
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Colin
commit
c4b3dda2f5
1 changed files with 122 additions and 141 deletions
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@ -5,6 +5,83 @@ module Vmpooler
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api_prefix = "/api/v#{api_version}"
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helpers do
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def get_capacity_metrics()
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capacity = {
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current: 0,
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total: 0,
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percent: 0
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}
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$config[:pools].each do |pool|
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pool['capacity'] = $redis.scard('vmpooler__ready__' + pool['name']).to_i
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capacity[:current] += pool['capacity']
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capacity[:total] += pool['size'].to_i
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end
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if capacity[:total] > 0
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capacity[:percent] = ((capacity[:current].to_f / capacity[:total].to_f) * 100.0).round(1)
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end
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capacity
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end
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def get_clone_metrics(date_str)
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clone = {
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duration: {
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average: 0,
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min: 0,
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max: 0,
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total: 0
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},
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count: {
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total: 0
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}
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}
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clone[:count][:total] = $redis.hlen('vmpooler__clone__' + date_str).to_i
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if clone[:count][:total] > 0
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clone_times = get_clone_times(date_str)
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clone[:duration][:total] = clone_times.reduce(:+).to_f
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clone[:duration][:average] = (clone[:duration][:total] / clone[:count][:total]).round(1)
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clone[:duration][:min], clone[:duration][:max] = clone_times.minmax
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end
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clone
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end
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def get_clone_times(date_str)
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$redis.hvals('vmpooler__clone__' + date_str).map(&:to_f)
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end
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def get_queue_metrics()
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queue = {
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pending: 0,
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cloning: 0,
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booting: 0,
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ready: 0,
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running: 0,
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completed: 0,
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total: 0
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}
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$config[:pools].each do |pool|
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queue[:pending] += $redis.scard('vmpooler__pending__' + pool['name']).to_i
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queue[:ready] += $redis.scard('vmpooler__ready__' + pool['name']).to_i
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queue[:running] += $redis.scard('vmpooler__running__' + pool['name']).to_i
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queue[:completed] += $redis.scard('vmpooler__completed__' + pool['name']).to_i
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end
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queue[:cloning] = $redis.get('vmpooler__tasks__clone').to_i
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queue[:booting] = queue[:pending].to_i - queue[:cloning].to_i
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queue[:booting] = 0 if queue[:booting] < 0
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queue[:total] = queue[:pending].to_i + queue[:ready].to_i + queue[:running].to_i + queue[:completed].to_i
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queue
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end
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def hostname_shorten(hostname)
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if $config[:config]['domain'] && hostname =~ /^\w+\.#{$config[:config]['domain']}$/
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hostname = hostname[/[^\.]+/]
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@ -13,14 +90,14 @@ module Vmpooler
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hostname
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end
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def validate_date_str(date_str)
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/^\d{4}-\d{2}-\d{2}$/ === date_str
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end
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def mean(list)
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s = list.map(&:to_f).reduce(:+).to_f
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(s > 0 && list.length > 0) ? s / list.length.to_f : 0
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end
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def validate_date_str(date_str)
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/^\d{4}-\d{2}-\d{2}$/ === date_str
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end
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end
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get "#{api_prefix}/status/?" do
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@ -30,68 +107,22 @@ module Vmpooler
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status: {
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ok: true,
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message: 'Battle station fully armed and operational.'
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},
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capacity: {
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current: 0,
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total: 0,
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percent: 0
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},
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clone: {
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duration: {
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average: 0,
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min: 0,
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max: 0
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},
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count: {
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total: 0
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}
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},
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queue: {
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pending: 0,
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cloning: 0,
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booting: 0,
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ready: 0,
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running: 0,
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completed: 0,
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total: 0
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}
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}
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result[:capacity] = get_capacity_metrics()
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result[:queue] = get_queue_metrics()
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result[:clone] = get_clone_metrics(Date.today.to_s)
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# Check for empty pools
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$config[:pools].each do |pool|
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pool['capacity'] = $redis.scard('vmpooler__ready__' + pool['name']).to_i
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result[:capacity][:current] += pool['capacity']
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result[:capacity][:total] += pool['size'].to_i
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if (pool['capacity'] == 0)
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if $redis.scard('vmpooler__ready__' + pool['name']).to_i == 0
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result[:status][:empty] ||= []
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result[:status][:empty].push(pool['name'])
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end
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result[:queue][:pending] += $redis.scard('vmpooler__pending__' + pool['name']).to_i
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result[:queue][:ready] += $redis.scard('vmpooler__ready__' + pool['name']).to_i
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result[:queue][:running] += $redis.scard('vmpooler__running__' + pool['name']).to_i
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result[:queue][:completed] += $redis.scard('vmpooler__completed__' + pool['name']).to_i
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end
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if result[:status][:empty]
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result[:status][:ok] = false
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result[:status][:message] = "Found #{result[:status][:empty].length} empty pools."
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end
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result[:capacity][:percent] = ((result[:capacity][:current].to_f / result[:capacity][:total].to_f) * 100.0).round(1) if result[:capacity][:total] > 0
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result[:queue][:cloning] = $redis.get('vmpooler__tasks__clone').to_i
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result[:queue][:booting] = result[:queue][:pending].to_i - result[:queue][:cloning].to_i
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result[:queue][:booting] = 0 if result[:queue][:booting] < 0
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result[:queue][:total] = result[:queue][:pending].to_i + result[:queue][:ready].to_i + result[:queue][:running].to_i + result[:queue][:completed].to_i
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result[:clone][:count][:total] = $redis.hlen('vmpooler__clone__' + Date.today.to_s).to_i
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if result[:clone][:count][:total] > 0
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clone_times = $redis.hvals('vmpooler__clone__' + Date.today.to_s).map(&:to_f)
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result[:clone][:duration][:average] = (clone_times.reduce(:+).to_f / result[:clone][:count][:total]).round(1)
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result[:clone][:duration][:min], result[:clone][:duration][:max] = clone_times.minmax
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end
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result[:status][:uptime] = (Time.now - $config[:uptime]).round(1) if $config[:uptime]
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@ -117,108 +148,58 @@ module Vmpooler
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total: 0
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}
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},
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daily: [] # used for daily info
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daily: []
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}
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from_param, to_param = params[:from], params[:to]
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from_param = params[:from] || Date.today.to_s
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to_param = params[:to] || Date.today.to_s
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# Check date formats.
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# It is ok if to_param is nil, we will assume this means 'today'
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if to_param.nil?
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to_param = Date.today.to_s
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elsif !validate_date_str(to_param.to_s)
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halt 400, 'Invalid "to" date format, must match YYYY-MM-DD'
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# Validate date formats
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[from_param, to_param].each do |param|
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if !validate_date_str(param.to_s)
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halt 400, "Invalid date format '#{param}', must match YYYY-MM-DD."
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end
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# It is also ok if from_param is nil, we will assume this also means 'today'
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if from_param.nil?
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from_param = Date.today.to_s
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elsif !validate_date_str(from_param.to_s)
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halt 400, 'Invalid "from" date format, must match YYYY-MM-DD'
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end
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from_date, to_date = Date.parse(from_param), Date.parse(to_param)
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if to_date < from_date
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halt 400, 'Date range is invalid, "to" cannot come before "from".'
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halt 400, 'Date range is invalid, \'to\' cannot come before \'from\'.'
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elsif from_date > Date.today
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halt 400, 'Date range is invalid, "from" must be in the past.'
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halt 400, 'Date range is invalid, \'from\' must be in the past.'
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end
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# total clone time for entire duration requested.
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min_max_clone_times = [] # min/max clone times from each day.
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total_clones_per_day = [] # total clones from each day
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total_clone_dur_day = [] # total clone durations from each day
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# generate sequence/range for from_date to to_date (inclusive).
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# for each date, calculate the day's clone total & average, as well
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# as add to total/overall values.
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(from_date..to_date).each do |date|
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me = {
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daily = {
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date: date.to_s,
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clone: {
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duration: {
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average: 0,
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min: 0,
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max: 0,
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total: 0
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},
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count: {
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total: $redis.hlen('vmpooler__clone__' + date.to_s).to_i
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}
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}
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clone: get_clone_metrics(date.to_s)
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}
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# add to daily clone count array
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total_clones_per_day.push(me[:clone][:count][:total])
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# fetch clone times from redis for this date. convert the results
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# to float (numeric).
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clone_times = $redis.hvals('vmpooler__clone__' + date.to_s).map(&:to_f)
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unless clone_times.nil? or clone_times.length == 0
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clone_time = clone_times.reduce(:+).to_f
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# add clone time for this date for later processing
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total_clone_dur_day.push(clone_time)
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me[:clone][:duration][:total] = clone_time
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# min and max clone durations for the day.
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mi, ma = clone_times.minmax
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me[:clone][:duration][:min], me[:clone][:duration][:max] = mi, ma
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min_max_clone_times.push(mi, ma)
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# if clone_total > 0, calculate clone_average.
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# this prevents divide by 0 problems.
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if me[:clone][:count][:total] > 0
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me[:clone][:duration][:average] = mean(clone_times)
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else
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me[:clone][:duration][:average] = 0
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end
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result[:daily].push(daily)
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end
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# add to daily array
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result[:daily].push(me)
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daily_clone_counts = []
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daily_clone_durations = []
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result[:daily].each do |daily|
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daily_clone_counts.push(daily[:clone][:count][:total])
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if daily[:clone][:count][:total] > 0
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daily_clone_durations.push(daily[:clone][:duration][:min])
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daily_clone_durations.push(daily[:clone][:duration][:max])
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end
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# again, calc clone_average if we had clones.
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unless total_clones_per_day.nil? or total_clones_per_day.length == 0
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# totals
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result[:clone][:count][:total] = total_clones_per_day.reduce(:+).to_i
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result[:clone][:duration][:total] = total_clone_dur_day.reduce(:+).to_f
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result[:clone][:count][:total] += daily[:clone][:count][:total]
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result[:clone][:duration][:total] += daily[:clone][:duration][:total]
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# averages and other things.
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if result[:clone][:count][:total] != 0
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if result[:clone][:count][:total] > 0
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result[:clone][:duration][:average] = result[:clone][:duration][:total] / result[:clone][:count][:total]
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end
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if min_max_clone_times.length > 0
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result[:clone][:duration][:min], result[:clone][:duration][:max] = min_max_clone_times.minmax
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end
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result[:clone][:count][:min], result[:clone][:count][:max] = total_clones_per_day.minmax
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result[:clone][:count][:average] = mean(total_clones_per_day)
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end
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result[:clone][:count][:min], result[:clone][:count][:max] = daily_clone_counts.minmax
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result[:clone][:count][:average] = mean(daily_clone_counts)
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result[:clone][:duration][:min], result[:clone][:duration][:max] = daily_clone_durations.minmax
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JSON.pretty_generate(result)
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end
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