/usr/share/sysdig/chisels/common.lua is in sysdig 0.8.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 | --[[
Copyright (C) 2013-2014 Draios inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2 as
published by the Free Software Foundation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
--]]
--[[
This file contains a bunch of functions that are helpful in multiple scripts
]]--
--[[
Serialize the content of a table into a tring
]]--
function st(val, name, skipnewlines, depth)
skipnewlines = skipnewlines or false
depth = depth or 0
local tmp = string.rep(" ", depth)
if name then tmp = tmp .. name .. " = " end
if type(val) == "table" then
tmp = tmp .. "{" .. (not skipnewlines and "\n" or "")
for k, v in pairs(val) do
tmp = tmp .. st(v, k, skipnewlines, depth + 1) .. "," .. (not skipnewlines and "\n" or "")
end
tmp = tmp .. string.rep(" ", depth) .. "}"
elseif type(val) == "number" then
tmp = tmp .. tostring(val)
elseif type(val) == "string" then
tmp = tmp .. string.format("%q", val)
elseif type(val) == "boolean" then
tmp = tmp .. (val and "true" or "false")
else
tmp = tmp .. "\"[inserializeable datatype:" .. type(val) .. "]\""
end
return tmp
end
--[[
Extends a string to newlen with spaces
]]--
function extend_string(s, newlen)
if #s < newlen then
local ccs = " "
s = s .. string.sub(ccs, 0, newlen - #s)
return s
else
if newlen > 0 then
return (string.sub(s, 0, newlen - 1) .. " ")
else
return ""
end
end
end
--[[
Basic string split.
]]--
function split(s, delimiter)
local result = {}
for match in (s..delimiter):gmatch("(.-)"..delimiter) do
table.insert(result, match)
end
return result
end
--[[
convert a number into a byte representation.
E.g. 1230 becomes 1.23K
]]--
function format_bytes(val)
if val > (1024 * 1024 * 1024 * 1024 * 1024) then
return string.format("%.2fP", val / (1024 * 1024 * 1024 * 1024 * 1024))
elseif val > (1024 * 1024 * 1024 * 1024) then
return string.format("%.2fT", val / (1024 * 1024 * 1024 * 1024))
elseif val > (1024 * 1024 * 1024) then
return string.format("%.2fG", val / (1024 * 1024 * 1024))
elseif val > (1024 * 1024) then
return string.format("%.2fM", val / (1024 * 1024))
elseif val > 1024 then
return string.format("%.2fKB", val / (1024))
else
return string.format("%dB", val)
end
end
--[[
convert a nanosecond time interval into a s.ns representation.
E.g. 1100000000 becomes 1.1s
]]--
ONE_S_IN_NS=1000000000
ONE_MS_IN_NS=1000000
ONE_US_IN_NS=1000
function format_time_interval(val)
if val >= (ONE_S_IN_NS) then
return string.format("%u.%02us", math.floor(val / ONE_S_IN_NS), (val % ONE_S_IN_NS) / 10000000)
elseif val >= (ONE_S_IN_NS / 100) then
return string.format("%ums", math.floor(val / (ONE_S_IN_NS / 1000)))
elseif val >= (ONE_S_IN_NS / 1000) then
return string.format("%u.%02ums", math.floor(val / (ONE_S_IN_NS / 1000)), (val % ONE_MS_IN_NS) / 10000)
elseif val >= (ONE_S_IN_NS / 100000) then
return string.format("%uus", math.floor(val / (ONE_S_IN_NS / 1000000)))
elseif val >= (ONE_S_IN_NS / 1000000) then
return string.format("%u.%02uus", math.floor(val / (ONE_S_IN_NS / 1000000)), (val % ONE_US_IN_NS) / 10)
else
return string.format("%uns", val)
end
end
--[[
extract the top num entries from the table t, after sorting them based on the entry value using the function order()
]]--
function pairs_top_by_val(t, num, order)
local keys = {}
for k in pairs(t) do keys[#keys+1] = k end
table.sort(keys, function(a,b) return order(t, a, b) end)
local i = 0
return function()
i = i + 1
if (num == 0 or i <= num) and keys[i] then
return keys[i], t[keys[i]]
end
end
end
--[[
Timestamp <-> string conversion
]]--
function ts_to_str(tshi, tslo)
return string.format("%u%.9u", tshi, tslo)
end
--[[
Pick a key-value table and render it to the console in sorted top format
]]--
json = require ("dkjson")
function print_sorted_table(stable, ts_s, ts_ns, timedelta, viz_info)
local sorted_grtable = pairs_top_by_val(stable, viz_info.top_number, function(t,a,b) return t[b] < t[a] end)
if viz_info.output_format == "json" then
local jdata = {}
local j = 1
for k,v in sorted_grtable do
local vals = split(k, "\001\001")
vals[#vals + 1] = v
jdata[j] = vals
j = j + 1
end
local jinfo = {}
for i, keyname in ipairs(viz_info.key_fld) do
jinfo[i] = {name = keyname, desc = viz_info.key_desc[i], is_key = true}
end
jinfo[3] = {name = viz_info.value_fld, desc = viz_info.value_desc, is_key = false}
local res = {ts = sysdig.make_ts(ts_s, ts_ns), data = jdata, info = jinfo}
local str = json.encode(res, { indent = true })
print(str)
else
-- Same size to extend each string
local EXTEND_STRING_SIZE = 20
local header = extend_string(viz_info.value_desc, EXTEND_STRING_SIZE)
for i, fldname in ipairs(viz_info.key_desc) do
header = header .. extend_string(fldname, EXTEND_STRING_SIZE)
end
print(header)
print("--------------------------------------------------------------------------------")
for k,v in sorted_grtable do
local keystr = ""
local singlekeys = split(k, "\001\001")
for i, singlekey in ipairs(singlekeys) do
if i < #singlekeys then
keystr = keystr .. extend_string(string.sub(singlekey, 0, EXTEND_STRING_SIZE), EXTEND_STRING_SIZE)
else
keystr = keystr .. singlekey
end
end
if viz_info.value_units == "none" then
print(extend_string(tostring(v), EXTEND_STRING_SIZE) .. keystr)
elseif viz_info.value_units == "bytes" then
print(extend_string(format_bytes(v), EXTEND_STRING_SIZE) .. keystr)
elseif viz_info.value_units == "time" then
print(extend_string(format_time_interval(v), EXTEND_STRING_SIZE) .. keystr)
elseif viz_info.value_units == "timepct" then
if timedelta > 0 then
pctstr = string.format("%.2f%%", v / timedelta * 100)
else
pctstr = "0.00%"
end
print(extend_string(pctstr, EXTEND_STRING_SIZE) .. keystr)
end
end
end
end
--[[
Try to convert user input to a number using tonumber(). If tonumber() returns
'nil', print an error message to the user and exit, otherwise return
tonumber(value).
]]--
function parse_numeric_input(value, name)
val = tonumber(value)
if val == nil then
print(string.format("Input %s must be a number.", name))
require ("os")
os.exit()
end
return val
end
|