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local sqlite3 = require "rspamd_sqlite3"
local redis = require "rspamd_redis"
local util = require "rspamd_util"
local function send_redis(server, symbol, tokens, password, db, cmd)
local ret = true
local conn,err = redis.connect_sync({
host = server,
})
local err_str
if not conn then
print('Cannot connect to ' .. server .. ' error: ' .. err)
return false, err
end
if password then
conn:add_cmd('AUTH', {password})
end
if db then
conn:add_cmd('SELECT', {db})
end
for _,t in ipairs(tokens) do
if not conn:add_cmd(cmd, {symbol .. t[3], t[1], t[2]}) then
ret = false
err_str = 'add command failure' .. string.format('%s %s',
cmd, table.concat({symbol .. t[3], t[1], t[2]}, ' '))
end
end
if ret then
ret,err_str = conn:exec()
end
return ret,err_str
end
local function convert_learned(cache, server, password, redis_db)
local converted = 0
local db = sqlite3.open(cache)
local ret = true
local err_str
if not db then
print('Cannot open cache database: ' .. cache)
return false
end
db:sql('BEGIN;')
local conn,err = redis.connect_sync({
host = server,
})
if not conn then
print('Cannot connect to ' .. server .. ' error: ' .. err)
return false
end
if password then
conn:add_cmd('AUTH', {password})
end
if redis_db then
conn:add_cmd('SELECT', {redis_db})
end
for row in db:rows('SELECT * FROM learns;') do
local is_spam
local digest = tostring(util.encode_base32(row.digest))
if row.flag == '0' then
is_spam = '-1'
else
is_spam = '1'
end
if not conn:add_cmd('HSET', {'learned_ids', digest, is_spam}) then
print('Cannot add hash: ' .. digest)
ret = false
else
converted = converted + 1
end
end
db:sql('COMMIT;')
if ret then
ret,err_str = conn:exec()
end
if ret then
print(string.format('Converted %d cached items from sqlite3 learned cache to redis',
converted))
else
print('Error occurred during sending data to redis: ' .. err_str)
end
return ret
end
return function (_, res)
local db = sqlite3.open(res['source_db'])
local tokens = {}
local num = 0
local total = 0
local nusers = 0
local lim = 1000 -- Update each 1000 tokens
local users_map = {}
local learns = {}
local redis_password = res['redis_password']
local redis_db = nil
local cmd = 'HINCRBY'
local ret, err_str
if res['redis_db'] then
redis_db = tostring(res['redis_db'])
end
if res['reset_previous'] then
cmd = 'HSET'
end
if res['cache_db'] then
if not convert_learned(res['cache_db'], res['redis_host'],
redis_password, redis_db) then
print('Cannot convert learned cache to redis')
return
end
end
if not db then
print('Cannot open source db: ' .. res['source_db'])
return
end
db:sql('BEGIN;')
-- Fill users mapping
for row in db:rows('SELECT * FROM users;') do
if row.id == '0' then
users_map[row.id] = ''
else
users_map[row.id] = row.name
end
learns[row.id] = row.learns
nusers = nusers + 1
end
-- Workaround for old databases
for row in db:rows('SELECT * FROM languages') do
if learns['0'] then
learns['0'] = learns['0'] + row.learns
else
learns['0'] = row.learns
end
end
-- Fill tokens, sending data to redis each `lim` records
for row in db:rows('SELECT token,value,user FROM tokens;') do
local user = ''
if row.user ~= 0 and users_map[row.user] then
user = users_map[row.user]
end
table.insert(tokens, {row.token, row.value, user})
num = num + 1
total = total + 1
if num > lim then
ret,err_str = send_redis(res['redis_host'], res['symbol'],
tokens, redis_password, redis_db, cmd)
if not ret then
print('Cannot send tokens to the redis server: ' .. err_str)
return
end
num = 0
tokens = {}
end
end
if #tokens > 0 then
ret, err_str = send_redis(res['redis_host'], res['symbol'], tokens,
redis_password, redis_db, cmd)
if not ret then
print('Cannot send tokens to the redis server: ' .. err_str)
return
end
end
-- Now update all users
local conn,err = redis.connect_sync({
host = res['redis_host'],
})
if not conn then
print('Cannot connect to ' .. res['redis_host'] .. ' error: ' .. err)
return false
end
if redis_password then
conn:add_cmd('AUTH', {redis_password})
end
if redis_db then
conn:add_cmd('SELECT', {redis_db})
end
for id,learned in pairs(learns) do
local user = users_map[id]
if not conn:add_cmd(cmd, {res['symbol'] .. user, 'learns', learned}) then
print('Cannot update learns for user: ' .. user)
end
if not conn:add_cmd('SADD', {res['symbol'] .. '_keys', res['symbol'] .. user}) then
print('Cannot update learns for user: ' .. user)
end
end
db:sql('COMMIT;')
ret = conn:exec()
if ret then
print(string.format('Migrated %d tokens for %d users for symbol %s',
total, nusers, res['symbol']))
else
print('Error occurred during sending data to redis')
end
end
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