Mercurial > prosody-modules

annotate mod_migrate/mod_migrate.lua @ 3819:1bab6f67eb5f

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mod_rest: Fix previous commit Working with the stanza, not the JSON table
author Kim Alvefur <zash@zash.se>
date Wed, 01 Jan 2020 17:45:07 +0100
parents 611ac62c5b63
children c9e1eee6a948
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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8df071457dee mod_migrate: Provides a prosodyctl mod_migrate command for copying data between storage backends
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1 -- mod_migrate
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2
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3 local unpack = table.unpack or unpack;
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4 local sm = require"core.storagemanager";
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5 local um = require"core.usermanager";
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6
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7 local function users(store, host)
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8 if store.users then
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9 return store:users();
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10 else
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11 return um.users(host);
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12 end
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13 end
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14
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15 function module.command(arg)
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16 local host, source_stores, migrate_to = unpack(arg);
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17 if not migrate_to then
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18 return print("Usage: prosodyctl mod_migrate example.com <source-store>[-<store-type>] <target-driver> [users]*");
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19 end
2139
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20 if not prosody.hosts[host] then
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21 return print(("The host %q is not know by Prosody."):format(host));
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22 end
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23 sm.initialize_host(host);
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24 um.initialize_host(host);
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25 local module = module:context(host);
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26 for source_store in source_stores:gmatch("[^,]+") do
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27 local store_type = source_store:match("%-(%a+)$");
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28 if store_type then
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29 source_store = source_store:sub(1, -2-#store_type);
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30 end
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31 local storage = module:open_store(source_store, store_type);
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32 local target = assert(sm.load_driver(host, migrate_to));
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33 target = assert(target:open(source_store, store_type));
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34
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35 local function migrate_user(username)
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36 module:log("info", "Migrating %s data for %s", source_store, username);
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37 local data, err = storage:get(username);
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38 if not data and err then
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39 module:log("error", "Could not read data: %s", err);
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40 else
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41 local ok, err = target:set(username, data);
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42 if not ok then
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43 module:log("error", "Could not write data: %s", err);
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44 end
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45 end
1985
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46 end
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47
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48 if store_type == "archive" then
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49 function migrate_user(username)
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50 module:log("info", "Migrating %s archive items for %s", source_store, username);
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51 local count, errs = 0, 0;
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52 for id, item, when, with in storage:find(username) do
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53 local ok, err = target:append(username, id, item, when, with);
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54 if ok then
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55 count = count + 1;
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56 else
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57 module:log("warn", "Error: %s", err);
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58 errs = errs + 1;
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59 end
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60 if ( count + errs ) % 100 == 0 then
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61 module:log("info", "%d items migrated, %d errors", count, errs);
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62 end
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63 end
1985
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64 module:log("info", "%d items migrated, %d errors", count, errs);
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65 end
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66 end
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67
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68 if arg[4] then
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69 for i = 4, #arg do
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70 migrate_user(arg[i]);
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71 end
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72 else
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73 xpcall(function()
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74 for user in users(storage, host) do
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75 migrate_user(user);
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76 end
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77 end,
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78 function (err)
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79 module:log("error", "Could not list users, you'll have to supply them as arguments");
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80 module:log("error", "The error was: %s", err);
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81 end);
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82 end
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83 end
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84 end