prosody-modules
17408ddd34b0
mod_migrate/mod_migrate.lua

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mod_migrate/mod_migrate.lua @ 2139:17408ddd34b0

mod_migrate: Check that the hostname is known, or yell and abort (thanks Link Mauve)
author Kim Alvefur <zash@zash.se>
date Sun, 27 Mar 2016 20:09:29 +0200
parent 2064:2a82c55762a7
child 2812:fd4a5ba12fa2
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1791
8df071457dee mod_migrate: Provides a prosodyctl mod_migrate command for copying data between storage backends
Kim Alvefur <zash@zash.se>
parents:
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1 -- mod_migrate
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2
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3 local sm = require"core.storagemanager";
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4 local um = require"core.usermanager";
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5 local mm = require"core.modulemanager";
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6
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7 function module.command(arg)
1985
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8 local host, source_stores, migrate_to, user = unpack(arg);
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9 if not migrate_to then
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10 return print("Usage: prosodyctl mod_migrate example.com <source-store>[-<store-type>] <target-driver> [users]*");
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11 end
2139
17408ddd34b0 mod_migrate: Check that the hostname is known, or yell and abort (thanks Link Mauve)
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12 if not prosody.hosts[host] then
17408ddd34b0 mod_migrate: Check that the hostname is known, or yell and abort (thanks Link Mauve)
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13 return print(("The host %q is not know by Prosody."):format(host));
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14 end
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15 sm.initialize_host(host);
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16 um.initialize_host(host);
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17 local module = module:context(host);
1985
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parents: 1813
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18 for source_store in source_stores:gmatch("[^,]+") do
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19 local store_type = source_store:match("%-(%a+)$");
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20 if store_type then
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21 source_store = source_store:sub(1, -2-#store_type);
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22 end
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23 local storage = module:open_store(source_store, store_type);
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24 local target = assert(sm.load_driver(host, migrate_to));
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25 target = assert(target:open(source_store, store_type));
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26
1985
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27 local function migrate_user(username)
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28 module:log("info", "Migrating %s data for %s", source_store, username);
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29 local data, err = storage:get(username);
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30 if not data and err then
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31 module:log("error", "Could not read data: %s", err);
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32 else
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33 local ok, err = target:set(username, data);
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34 if not ok then
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35 module:log("error", "Could not write data: %s", err);
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36 end
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37 end
1985
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parents: 1813
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38 end
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39
1985
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parents: 1813
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40 if store_type == "archive" then
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41 function migrate_user(username)
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42 module:log("info", "Migrating %s archive items for %s", source_store, username);
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43 local count, errs = 0, 0;
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44 for id, item, when, with in storage:find(username) do
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45 local ok, err = target:append(username, id, item, when, with);
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46 if ok then
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47 count = count + 1;
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48 else
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49 module:log("warn", "Error: %s", err);
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50 errs = errs + 1;
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51 end
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52 if ( count + errs ) % 100 == 0 then
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53 module:log("info", "%d items migrated, %d errors", count, errs);
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54 end
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55 end
1985
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56 module:log("info", "%d items migrated, %d errors", count, errs);
1813
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parents: 1812
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57 end
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parents: 1812
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58 end
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59
1985
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60 if arg[4] then
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61 for i = 4, #arg do
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62 migrate_user(arg[i]);
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63 end
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64 else
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65 for user in um.users(host) do
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66 migrate_user(user);
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67 end
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68 end
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69 end
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70 end