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annotate mod_migrate/mod_migrate.lua @ 3016:3f4e2340bfdc

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mod_pubsub_post: Add support for publishing arbitrary JSON Payloads are wrapped in XEP-0335: JSON Containers
author Kim Alvefur <zash@zash.se>
date Sun, 20 May 2018 00:00:33 +0200
parents cd9831b27746
children 611ac62c5b63
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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 sm = require"core.storagemanager";
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4 local um = require"core.usermanager";
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5
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6 function module.command(arg)
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7 local host, source_stores, migrate_to = unpack(arg);
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8 if not migrate_to then
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9 return print("Usage: prosodyctl mod_migrate example.com <source-store>[-<store-type>] <target-driver> [users]*");
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10 end
2139
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11 if not prosody.hosts[host] then
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12 return print(("The host %q is not know by Prosody."):format(host));
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13 end
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14 sm.initialize_host(host);
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15 um.initialize_host(host);
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16 local module = module:context(host);
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17 for source_store in source_stores:gmatch("[^,]+") do
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18 local store_type = source_store:match("%-(%a+)$");
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19 if store_type then
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20 source_store = source_store:sub(1, -2-#store_type);
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21 end
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22 local storage = module:open_store(source_store, store_type);
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23 local target = assert(sm.load_driver(host, migrate_to));
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24 target = assert(target:open(source_store, store_type));
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25
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26 local function migrate_user(username)
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27 module:log("info", "Migrating %s data for %s", source_store, username);
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28 local data, err = storage:get(username);
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29 if not data and err then
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30 module:log("error", "Could not read data: %s", err);
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31 else
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32 local ok, err = target:set(username, data);
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33 if not ok then
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34 module:log("error", "Could not write data: %s", err);
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35 end
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36 end
1985
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37 end
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38
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39 if store_type == "archive" then
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40 function migrate_user(username)
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41 module:log("info", "Migrating %s archive items for %s", source_store, username);
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42 local count, errs = 0, 0;
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43 for id, item, when, with in storage:find(username) do
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44 local ok, err = target:append(username, id, item, when, with);
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45 if ok then
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46 count = count + 1;
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47 else
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48 module:log("warn", "Error: %s", err);
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49 errs = errs + 1;
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50 end
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51 if ( count + errs ) % 100 == 0 then
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52 module:log("info", "%d items migrated, %d errors", count, errs);
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53 end
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54 end
1985
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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
1985
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59 if arg[4] then
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60 for i = 4, #arg do
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61 migrate_user(arg[i]);
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62 end
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63 else
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64 xpcall(function()
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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 function (err)
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70 module:log("error", "Could not list users, you'll have to supply them as arguments");
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71 module:log("error", "The error was: %s", err);
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72 end);
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73 end
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74 end
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75 end