Mercurial > prosody-modules

annotate mod_migrate/mod_migrate.lua @ 4315:87e250409998

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author Kim Alvefur <zash@zash.se>
date Sat, 02 Jan 2021 15:28:45 +0100
parents c9e1eee6a948
children a16b689525d7
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1 -- mod_migrate
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2
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3 local unpack = table.unpack or unpack; --luacheck: ignore 113/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 local function stores(host)
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16 if store.users then
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17 return store:users();
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18 else
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19 return um.users(host);
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20 end
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21 end
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22
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23 local function migrate_store(host, source_store, store_type, migrate_to, migrate_users)
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24 local module = module:context(host);
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25 local storage = module:open_store(source_store, store_type);
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26 local target = assert(sm.load_driver(host, migrate_to));
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27 target = assert(target:open(source_store, store_type));
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28
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29 local function migrate_user(username)
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30 module:log("info", "Migrating %s data for %s", source_store, username);
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31 local data, err = storage:get(username);
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32 if not data and err then
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33 module:log("error", "Could not read data: %s", err);
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34 else
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35 local ok, err = target:set(username, data);
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36 if not ok then
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37 module:log("error", "Could not write data: %s", err);
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38 end
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39 end
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40 end
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41
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42 if store_type == "archive" then
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43 function migrate_user(username)
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44 module:log("info", "Migrating %s archive items for %s", source_store, username);
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45 local count, errs = 0, 0;
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46 for id, item, when, with in storage:find(username) do
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47 local ok, err = target:append(username, id, item, when, with);
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48 if ok then
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49 count = count + 1;
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50 else
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51 module:log("warn", "Error: %s", err);
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52 errs = errs + 1;
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53 end
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54 if ( count + errs ) % 100 == 0 then
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55 module:log("info", "%d items migrated, %d errors", count, errs);
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56 end
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57 end
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58 module:log("info", "%d items migrated, %d errors", count, errs);
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59 end
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60 end
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61
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62 if migrate_users then
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63 for _, username in ipairs(migrate_users) do
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64 migrate_user(username);
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65 end
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66 else
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67 xpcall(function()
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68 for username in users(storage, host) do
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69 migrate_user(username);
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70 end
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71 end,
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72 function (err)
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73 module:log("error", "Could not list users, you'll have to supply them as arguments");
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74 module:log("error", "The error was: %s", err);
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75 end);
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76 end
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77 end
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78
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79 function module.command(arg)
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80 local host, source_stores, migrate_to = unpack(arg);
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81 if not migrate_to then
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82 return print("Usage: prosodyctl mod_migrate example.com <source-store>[-<store-type>] <target-driver> [users]*");
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83 end
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84 if not prosody.hosts[host] then
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85 return print(("The host %q is not know by Prosody."):format(host));
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86 end
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87 sm.initialize_host(host);
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88 um.initialize_host(host);
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89 for source_store in source_stores:gmatch("[^,]+") do
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90 local store_type = source_store:match("%-(%a+)$");
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91 if store_type then
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92 source_store = source_store:sub(1, -2-#store_type);
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93 end
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94 local migrate_users;
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95 if arg[4] then
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96 migrate_users = {};
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97 for i = 4, #arg do
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98 migrate_users[i-3] = arg[i];
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99 end
1985
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100 end
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101 if source_store == "pep_data" then
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102 for store in sm.get_driver(host, source_store):stores(true) do
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103 if store:match("^pep_") then
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104 print("Migrating "..store);
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105 migrate_store(host, store, store_type, migrate_to, migrate_users);
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106 end
1985
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107 end
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108 else
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109 migrate_store(host, source_store, store_type, migrate_to, migrate_users);
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110 end
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111 end
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112 end