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#!/usr/bin/env ruby
require 'time'
require 'optparse'
unless Array.instance_methods.include? :to_h
class Array
def to_h
h = {}
each { |k,v| h[k]=v }
h
end
end
end
# statedump.c:gf_proc_dump_mempool_info uses a five-dash record separator,
# client.c:client_fd_lk_ctx_dump uses a six-dash record separator.
ARRSEP = /^(-{5,6}=-{5,6})?$/
HEAD = /^\[(.*)\]$/
INPUT_FORMATS = %w[statedump json]
format = 'json'
input_format = 'statedump'
tz = '+0000'
memstat_select,memstat_reject = //,/\Z./
OptionParser.new do |op|
op.banner << " [<] <STATEDUMP>"
op.on("-f", "--format=F", "json/yaml/memstat(-[plain|human|json])") { |s| format = s }
op.on("--input-format=F", INPUT_FORMATS.join(?/)) { |s| input_format = s }
op.on("--timezone=T",
"time zone to apply to zoneless timestamps [default UTC]") { |s| tz = s }
op.on("--memstat-select=RX", "memstat: select memory types matching RX") { |s|
memstat_select = Regexp.new s
}
op.on("--memstat-reject=RX", "memstat: reject memory types matching RX") { |s|
memstat_reject = Regexp.new s
}
end.parse!
if format =~ /\Amemstat(?:-(.*))?/
memstat_type = $1 || 'plain'
unless %w[plain human json].include? memstat_type
raise "unknown memstat type #{memstat_type.dump}"
end
format = 'memstat'
end
repr, logsep = case format
when 'yaml'
require 'yaml'
[proc { |e| e.to_yaml }, "\n"]
when 'json', 'memstat'
require 'json'
[proc { |e| e.to_json }, " "]
else
raise "unkonwn format '#{format}'"
end
formatter = proc { |e| puts repr.call(e) }
INPUT_FORMATS.include? input_format or raise "unkwown input format '#{input_format}'"
dumpinfo = {}
# parse a statedump entry
elem_cbk = proc { |s,&cbk|
arraylike = false
s.grep(/\S/).empty? and next
head = nil
while s.last =~ /^\s*$/
s.pop
end
body = catch { |misc2|
s[0] =~ HEAD ? (head = $1) : (throw misc2)
body = [[]]
s[1..-1].each { |l|
if l =~ ARRSEP
arraylike = true
body << []
next
end
body.last << l
}
body.reject(&:empty?).map { |e|
ea = e.map { |l|
k,v = l.split("=",2)
m = /\A(0|-?[1-9]\d*)(\.\d+)?\Z/.match v
[k, m ? (m[2] ? Float(v) : Integer(v)) : v]
}
begin
ea.to_h
rescue
throw misc2
end
}
}
if body
cbk.call [head, arraylike ? body : (body.empty? ? {} : body[0])]
else
STDERR.puts ["WARNING: failed to parse record:", repr.call(s)].join(logsep)
end
}
# aggregator routine
aggr = case format
when 'memstat'
meminfo = {}
# commit memory-related entries to meminfo
proc { |k,r|
case k
when /memusage/
(meminfo["GF_MALLOC"]||={})[k] ||= r["size"] if k =~ memstat_select and k !~ memstat_reject
when "mempool"
r.each {|e|
kk = "mempool:#{e['pool-name']}"
(meminfo["mempool"]||={})[kk] ||= e["size"] if kk =~ memstat_select and kk !~ memstat_reject
}
end
}
else
# just format data, don't actually aggregate anything
proc { |pair| formatter.call pair }
end
# processing the data
case input_format
when 'statedump'
acc = []
$<.each { |l|
l = l.strip
if l =~ /^(DUMP-(?:START|END)-TIME):\s+(.*)/
dumpinfo["_meta"]||={}
(dumpinfo["_meta"]["date"]||={})[$1] = Time.parse([$2, tz].join " ")
next
end
if l =~ HEAD
elem_cbk.call(acc, &aggr)
acc = [l]
next
end
acc << l
}
elem_cbk.call(acc, &aggr)
when 'json'
$<.each { |l|
r = JSON.load l
case r
when Array
aggr[r]
when Hash
dumpinfo.merge! r
end
}
end
# final actions: output aggregated data
case format
when 'memstat'
ma = meminfo.values.map(&:to_a).inject(:+)
totals = meminfo.map { |coll,h| [coll, h.values.inject(:+)] }.to_h
tt = ma.transpose[1].inject(:+)
summary_sep,showm = case memstat_type
when 'json'
["", proc { |k,v| puts({type: k, value: v}.to_json) }]
when 'plain', 'human'
# human-friendly number representation
hr = proc { |n|
qa = %w[B kB MB GB]
q = ((1...qa.size).find {|i| n < (1 << i*10)} || qa.size) - 1
"%.2f%s" % [n.to_f / (1 << q*10), qa[q]]
}
templ = "%{val} %{key}"
tft = proc { |t| t }
nft = if memstat_type == 'human'
nw = [ma.transpose[1], totals.values, tt].flatten.map{|n| hr[n].size}.max
proc { |n|
hn = hr[n]
" " * (nw - hn.size) + hn
}
else
nw = tt.to_s.size
proc { |n| "%#{nw}d" % n }
end
## Alternative template, key first:
# templ = "%{key} %{val}"
# tw = ma.transpose[0].map(&:size).max
# tft = proc { |t| t + " " * [tw - t.size, 0].max }
# nft = (memstat_type == 'human') ? hr : proc { |n| n }
["\n", proc { |k,v| puts templ % {key: tft[k], val: nft[v]} }]
else
raise 'this should be impossible'
end
ma.sort_by { |k,v| v }.each(&showm)
print summary_sep
totals.each { |coll,t| showm.call "Total #{coll}", t }
showm.call "TOTAL", tt
else
formatter.call dumpinfo
end
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