everlooping/test_pgsql.lua at master · appwilldev/everlooping · GitHub

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
#!/usr/bin/env luajit

-- for debug
local _tostring = require('logging').tostring
local write = function(s) io.stdout:write(s) end
local print = function(...)
  print(_tostring{...})
end

local PQ = require('everlooping.pgsql')
local cosocket = require('everlooping.cosocket')
local ioloop = require('everlooping.ioloop')

function showResult(res)
  for _, ret in ipairs(res) do
    for _, name in ipairs(ret.fieldnames) do
      write(string.format('%-15s', name))
    end
    write('\n' .. string.rep('=', 15 * #ret.fieldnames) .. '\n')
    for _, row in ipairs(ret.resultset) do
      for _, val in pairs(row) do
        write(string.format('%-15s', val))
      end
      write('\n')
    end
    write('\n')
  end
end

cosocket.register(function()
  print('request thread:', coroutine.running())
  write('\n')
  p = PQ.pgsql()
  local ok, err = p:connect('dbname=teamconnected')
  if not ok then
    write(err)
  end

  ok, err = p:query('select * from msg_entity limit 2; select * from account_entity limit 3')
  if not ok then
    write(err)
  else
    showResult(ok)
  end

  ok, err = p:query('select 1+3 * 7')
  if not ok then
    write(err)
  else
    showResult(ok)
  end

  ok, err = p:query("copy (select * from msg_entity order by id) to '/tmp/testdata'")
  if not ok then
    write(err)
  end

  write('\nexpecting error messages:\n\n')
  ok, err = p:query('select * from notthere')
  if not ok then
    write(err)
  end
  p:close()
  print('Request complete.')
end)

ioloop.defaultIOLoop():start()