lualibs-lightningmdb/test.lua

require "test_common"

local function basic_test()
  print("Lightning MDB version:",lightningmdb.version())
  print("Lightning error:",lightningmdb.strerror(0))

  print("-- globals --")
  pt(lightningmdb)

  -- env
  local e = lightningmdb.env_create()
  print(e)
  local dir = test_setup("foo")
  print(e:open(dir,0,420))
  print("fixedmap",MDB.FIXEDMAP)
  print("read only",MDB.RDONLY)

  print("-- stats --")
  pt(e:stat())

  print("-- info --")
  pt(e:info())
  print("get_path",e:get_path())


  --txn
  local t = e:txn_begin(nil,0)
  print("txn",t)
  t:commit()
  t = e:txn_begin(nil,0)
  print("txn",t)
  t:reset()
  t:renew()
  --t:abort()
  local db = t:dbi_open(nil,0)
  print(string.format("-- txn stat [%d] --",t:id()))
  pt(t:stat(db))
  t:abort()
  e:close()
end

local function grow_db()
  print("--- grow_db ---")
  local num_pages = 5
  local e

  local dir = test_setup("bar")

  local function grow()
    e = lightningmdb.env_create()
    num_pages = num_pages * 2
    print(e:set_mapsize(num_pages*4096))
    print(e:open(dir,0,420))
  end

  grow()
  local t = e:txn_begin(nil,0)
  local db = t:dbi_open(nil,MDB.DUPSORT)
  for i=1,600 do
    local rc,err = t:put(db,"hello "..i,"cruel world",MDB.NODUPDATA)
    if not rc then
      if err:find("MDB_MAP_FULL",1,true) then
        print("making more room at",i)
        t:abort()
        e:close()

        grow()
        t = e:txn_begin(nil,0)
        db = t:dbi_open(nil,MDB.DUPSORT)
      else
        print(rc,err)
      end
    end
  end
end

basic_test()
grow_db()

print("\n\n\n**** If you are seeing this, all is good (at least as far as lightningmdb is concerned). ****")