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#!/usr/bin/lua
function parseline(line)
local word
local words = {}
for word in string.gmatch(line, "%S+") do
words[#words+1] = word
end
return {
logdatetime=words[1],
elapsed=words[2],
clientip=words[3],
code=string.match(words[4] or "", "^[^/]*"),
status=string.match(words[4] or "", "[^/]*$"),
bytes=tonumber(words[5]),
method=words[6],
URL=words[7],
site = string.match(words[7], "^(%a+://[^/]*)"),
clientuserid=words[8],
peerstatus=string.match(words[9] or "", "^[^/]*"),
peerhost=string.match(words[9] or "", "[^/]*$"),
squarkcategory=string.match(words[11] or "", "^[^,]*"),
squarkaction=string.match(words[11] or "", ",([^,]+)$")
}
end
function add_by_subkey(tbl, key, entry)
if key == nil then
return tbl
end
if tbl[key] == nil then
tbl[key] = {
lines = entry.lines,
bytes = entry.bytes,
elapsed = entry.elapsed,
}
return tbl
end
tbl[key].lines = (tbl[key].lines or 0) + 1
tbl[key].bytes = tbl[key].bytes + entry.bytes
tbl[key].elapsed = tbl[key].elapsed + entry.elapsed
return tbl
end
function add_stats(total, subkeys, entry)
local _,k
for _,k in pairs(subkeys) do
if entry[k] ~= nil then
add_by_subkey(total[k], entry[k], entry)
end
end
total.elapsed = total.elapsed + entry.elapsed
total.bytes = total.bytes + entry.bytes
total.lines = total.lines + 1
return total
end
local function newstats(groupname, subkeys)
local t = {
bytes = 0, lines = 0, elapsed = 0,
group = groupname,
}
local _,k
for _,k in pairs(subkeys) do
t[k] = {}
end
return t
end
-- code = {}, category = {}, action = {},
local function add_stats_by_key(tbl, key, subkeys, entry)
if key == nil then
return tbl
end
if tbl[key] == nil then
tbl[key] = newstats(key, subkeys)
end
add_stats(tbl[key], subkeys, entry)
return tbl
end
function collect_stats(stats, keytbl, subkeys, entry)
local _,k
add_stats(stats.total, subkeys, entry)
for _,k in pairs(keytbl) do
add_stats_by_key(stats[k], entry[k], subkeys, entry)
end
return stats
end
function parsefile(file, keytbl, subkeys)
local numlines = 0
local f = assert(io.open(file))
local stats = {}
subkeys = subkeys or {"code", "squarkcategory", "squarkaction" }
stats.total = newstats("total", subkeys)
local _,k
for _,k in pairs(keytbl or {"site"}) do
stats[k] = {}
end
local line
for line in f:lines() do
collect_stats(stats, keytbl, subkeys, parseline(line))
end
f:close()
return stats
end
function dump_tbl(header, tbl)
io.write(header..":\n")
local k,v
for k,v in pairs(tbl) do
print("\t"..k..":", v.lines, v.bytes, v.elapsed)
end
end
function print_totals(header, tbl)
local k, v
print("Totals for "..header..":")
for k,v in pairs(tbl) do
if type(v) == "table" then
dump_tbl(k, v)
else
io.write(k..": "..v.."\n")
end
end
io.write("\n")
end
function sort_by_func(tbl, func)
local t = {}
for k, v in pairs(tbl) do
table.insert(t, v)
end
table.sort(t, func)
return t
end
function sort_by_key(tbl, key)
return sort_by_func(tbl, function(a,b)
return a[key] > b[key]
end)
end
function top_n_by_func(tbl, n, sortfunc, callback)
sorted = sort_by_func(tbl, sortfunc)
local i
for i = 1, #sorted do
callback(sorted[i])
if i > n then
break
end
end
end
function top_n_by_key(tbl, n, statskey)
top_n_by_func(tbl, n,
function(a, b)
return a[statskey] > b[statskey]
end,
function(rec)
print(rec.group, rec[statskey])
end)
end
stats = parsefile(arg[1] or "/var/log/squid/access.log",
{"site"},
{"code"})
print("= Top 10 sites by hits =")
top_n_by_key(stats.site, 10, "lines")
print("= Top 10 sites by TCP_HIT bytes =")
top_n_by_func(stats.site, 10,
function(a, b)
local an, bn = 0, 0
if a.code.TCP_HIT and a.code.TCP_HIT.bytes then
an = a.code.TCP_HIT.bytes
end
if b.code.TCP_HIT and b.code.TCP_HIT.bytes then
bn = b.code.TCP_HIT.bytes
end
print(an, bn)
return an > bn
end,
function(rec)
print(rec.group, rec.code.TCP_HIT.bytes)
end)
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