Alex Roitman b55300b729 Lua scripting feature. (#224)
* Start on lua scripting

* Implement evalsha, script load, script exists, and script flush

* Type conversions from lua to resp/json.
Refactor to make luastate and luascripts persistent in the controller.

* Change controller.command and all underlying commands to return resp.Value.
Serialize only during the ouput.

* First stab at tile38 call from lua

* Change tile38 into tile38.call in Lua

* Property return errors from scripts

* Minor refactoring.  No locking on script run

* Cleanup/refactoring

* Create a pool of 5 lua states, allow for more as needed. Refactor.

* Use safe map for scripts.  Add a limit for max number of lua states.  Refactor.

* Refactor

* Refactor script commands into atomic, read-only, and non-atomic classes.
Proper locking for all three classes.
Add tests for scripts

* More tests for scripts

* Properly escape newlines in lua-produced errors

* Better test for readonly failure

* Correctly convert ok/err messages between lua and resp.
Add pcall, sha1hex, error_reply, status_reply functions to tile38 namespace in lua.

* Add pcall test. Change writeErr to work with string argument

* Make sure eval/evalsha never attempt to write AOF

* Add eval-set and eval-get to benchmarks

* Fix eval benchmark tests, add more

* Improve benchmarks

* Optimizations and refactoring.

* Add lua memtest

* Typo

* Add dependency

* golint fixes

* gofmt fixes

* Add scripting commands to the core/commands.json

* Use ARGV for args inside lua
2017-10-05 08:20:40 -07:00

78 lines
1.9 KiB
Lua

assert(rawget(_G, "stat") == nil) -- module not loaded before
if T == nil then
stat = function () print"`querytab' nao ativo" end
return
end
function checktable (t)
local asize, hsize, ff = T.querytab(t)
local l = {}
for i=0,hsize-1 do
local key,val,next = T.querytab(t, i + asize)
if key == nil then
assert(l[i] == nil and val==nil and next==nil)
elseif key == "<undef>" then
assert(val==nil)
else
assert(t[key] == val)
local mp = T.hash(key, t)
if l[i] then
assert(l[i] == mp)
elseif mp ~= i then
l[i] = mp
else -- list head
l[mp] = {mp} -- first element
while next do
assert(ff <= next and next < hsize)
if l[next] then assert(l[next] == mp) else l[next] = mp end
table.insert(l[mp], next)
key,val,next = T.querytab(t, next)
assert(key)
end
end
end
end
l.asize = asize; l.hsize = hsize; l.ff = ff
return l
end
function mostra (t)
local asize, hsize, ff = T.querytab(t)
print(asize, hsize, ff)
print'------'
for i=0,asize-1 do
local _, v = T.querytab(t, i)
print(string.format("[%d] -", i), v)
end
print'------'
for i=0,hsize-1 do
print(i, T.querytab(t, i+asize))
end
print'-------------'
end
function stat (t)
t = checktable(t)
local nelem, nlist = 0, 0
local maxlist = {}
for i=0,t.hsize-1 do
if type(t[i]) == 'table' then
local n = table.getn(t[i])
nlist = nlist+1
nelem = nelem + n
if not maxlist[n] then maxlist[n] = 0 end
maxlist[n] = maxlist[n]+1
end
end
print(string.format("hsize=%d elements=%d load=%.2f med.len=%.2f (asize=%d)",
t.hsize, nelem, nelem/t.hsize, nelem/nlist, t.asize))
for i=1,table.getn(maxlist) do
local n = maxlist[i] or 0
print(string.format("%5d %10d %.2f%%", i, n, n*100/nlist))
end
end