discourse/plugins/discourse-nginx-performance.../script/nginx_analyze.rb

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require 'date'
require_relative '../lib/log_analyzer'
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args = ARGV.dup
if args[0] == "--limit"
args.shift
limit = args.shift.to_i
end
filenames = args if args[0]
filenames ||= ["/var/log/nginx/access.log", "/var/log/nginx/access.log.1"]
analyzer = LogAnalyzer.analyze(filenames, limit: limit)
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SPACER = "-" * 100
# don't feel like pulling in active support
def map_with_index(ary, &block)
idx = 0
ary.map do |item|
v = block.call(item, idx)
idx += 1
v
end
end
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def top(cols, aggregator, count, aggregator_formatter = nil)
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sorted = aggregator.top(count, aggregator_formatter)
col_just = []
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col_widths = map_with_index(cols) do |name, idx|
max_width = name.length
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if cols[idx].respond_to? :align
col_just[idx] = cols[idx].align
skip_just_detection = true
else
col_just[idx] = :ljust
end
sorted.each do |row|
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col_just[idx] = :rjust unless (String === row[idx] || row[idx].nil?) && !skip_just_detection
row[idx] = '%.2f' % row[idx] if Float === row[idx]
row[idx] = row[idx].to_s
max_width = row[idx].length if row[idx].length > max_width
end
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[max_width, 80].min
end
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puts(map_with_index(cols) do |name, idx|
name.ljust(col_widths[idx])
end.join(" "))
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puts(map_with_index(cols) do |name, idx|
("-" * name.length).ljust(col_widths[idx])
end.join(" "))
sorted.each do |raw_row|
rows = []
idx = 0
raw_row.each do |col|
j = 0
col.to_s.scan(/(.{1,80}($|\s)|.{1,80})/).each do |r|
rows[j] ||= []
rows[j][idx] = r[0]
j += 1
end
idx += 1
end
if rows.length > 1
puts
end
rows.each do |row|
cols.length.times do |i|
print row[i].to_s.send(col_just[i], col_widths[i])
print " "
end
puts
end
if rows.length > 1
puts
end
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end
end
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class Column < String
attr_accessor :align
def initialize(val, align)
super(val)
@align = align
end
end
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puts
puts "Analyzed: #{analyzer.filenames.join(",")} on #{`hostname`}"
if limit
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puts "Limited to #{DateTime.now - (limit.to_f / (60 * 24.0))} - #{DateTime.now}"
end
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puts SPACER
puts "#{analyzer.from_time} - #{analyzer.to_time}"
puts SPACER
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puts "Total Requests: #{analyzer.total_requests} ( MessageBus: #{analyzer.message_bus_requests} )"
puts SPACER
puts "Top 30 IPs by Server Load"
puts
top(["IP Address", "Duration", "Reqs"], analyzer.ip_to_rails_duration, 30)
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puts SPACER
puts
puts "Top 30 users by Server Load"
puts
top(["Username", "Duration", "Reqs", "Routes"], analyzer.username_to_rails_duration, 30)
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puts SPACER
puts
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puts "Top 100 routes by Server Load"
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puts
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top(["Route", "Duration", "Reqs", Column.new("Mobile", :rjust)], analyzer.route_to_rails_duration, 100, lambda {
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|hash, name, total|
"#{hash["mobile"] || 0} (#{"%.2f" % (((hash["mobile"] || 0) / (total + 0.0)) * 100)})%"}
)
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puts SPACER
puts
puts "Top 30 urls by Server Load"
puts
top(["Url", "Duration", "Reqs"], analyzer.url_to_rails_duration, 30)
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puts "(all durations in seconds)"
puts SPACER
puts
puts "Top 30 not found urls (404s)"
puts
top(["Url", "Count"], analyzer.status_404_to_count, 30)