Mercurial > prosody-modules

annotate mod_storage_appendmap/mod_storage_appendmap.lua @ 4737:2bc5a0c0d8c3

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
mod_rest: Remove unused variable [luacheck] Copied from core.stanza_router where it was probably used later in some code not included in the copy.
author Kim Alvefur <zash@zash.se>
date Wed, 03 Nov 2021 20:15:14 +0100
parents 6a7b7cb7148e
children e44b868cc575
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2061
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
1 local dump = require "util.serialization".serialize;
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
2 local load = require "util.envload".envloadfile;
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
3 local dm = require "core.storagemanager".olddm;
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
4
2796
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
5 local REMOVE = {}; -- Special value for removing keys
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
6
2061
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
7 local driver = {};
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
8
2796
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
9
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
10 local keywords = {
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
11 ["do"] = true; ["and"] = true; ["else"] = true; ["break"] = true;
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
12 ["if"] = true; ["end"] = true; ["goto"] = true; ["false"] = true;
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
13 ["in"] = true; ["for"] = true; ["then"] = true; ["local"] = true;
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
14 ["or"] = true; ["nil"] = true; ["true"] = true; ["until"] = true;
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
15 ["elseif"] = true; ["function"] = true; ["not"] = true;
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
16 ["repeat"] = true; ["return"] = true; ["while"] = true;
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
17
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
18 -- _ENV is not technically a keyword but we need to treat it as such
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
19 ["_ENV"] = true;
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
20 };
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
21
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
22 local function is_usable_identifier(s)
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
23 return type(s) == "string" and not keywords[s] and s:find("^[%a_][%w_]*$");
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
24 end
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
25
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
26 local function serialize_key(key)
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
27 if is_usable_identifier(key) then
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
28 return key;
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
29 else
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
30 return "_ENV[" .. dump(key) .. "]";
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
31 end
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
32 end
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
33
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
34 local function serialize_value(value)
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
35 if value == REMOVE then
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
36 return "nil";
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
37 else
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
38 return dump(value);
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
39 end
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
40 end
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
41
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
42 local function serialize_pair(key, value)
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
43 key = serialize_key(key);
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
44 value = serialize_value(value);
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
45 return key .. " = " .. value .. ";\n";
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
46 end
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
47
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
48 local function serialize_map(keyvalues)
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
49 local keys, values = {}, {};
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
50 for key, value in pairs(keyvalues) do
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
51 key = serialize_key(key);
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
52 value = serialize_value(value);
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
53 table.insert(keys, key);
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
54 table.insert(values, value);
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
55 end
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
56 return table.concat(keys, ", ") .. " = " .. table.concat(values, ", ") .. ";\n";
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
57 end
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
58
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
59 local map = { remove = REMOVE };
2061
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
60 local map_mt = { __index = map };
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
61
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
62 function map:get(user, key)
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
63 module:log("debug", "map:get(%s, %s)", tostring(user), tostring(key))
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
64 local filename = dm.getpath(user, module.host, self.store, "map");
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
65 module:log("debug", "File is %s", filename);
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
66 local env = {};
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
67 if _VERSION == "Lua 5.1" then -- HACK
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
68 env._ENV = env; -- HACK
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
69 end -- SO MANY HACKS
2635
4548c3d685b4 mod_storage_appendmap: Successfully return nothing on ENOENT
Kim Alvefur <zash@zash.se>
parents: 2431
diff changeset
70 local chunk, err, errno = load(filename, env);
4548c3d685b4 mod_storage_appendmap: Successfully return nothing on ENOENT
Kim Alvefur <zash@zash.se>
parents: 2431
diff changeset
71 if not chunk then if errno == 2 then return end return chunk, err; end
2061
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
72 local ok, err = pcall(chunk);
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
73 if not ok then return ok, err; end
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
74 if _VERSION == "Lua 5.1" then -- HACK
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
75 env._ENV = nil; -- HACK
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
76 end -- HACKS EVERYWHERE
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
77 if key == nil then
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
78 return env;
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
79 end
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
80 return env[key];
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
81 end
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
82
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
83 function map:set_keys(user, keyvalues)
2796
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
84 local data = serialize_map(keyvalues);
2061
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
85 return dm.append_raw(user, module.host, self.store, "map", data);
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
86 end
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
87
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
88 function map:set(user, key, value)
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
89 if _VERSION == "Lua 5.1" then
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
90 assert(key ~= "_ENV", "'_ENV' is a restricted key");
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
91 end
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
92 if key == nil then
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
93 local filename = dm.getpath(user, module.host, self.store, "map");
2796
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
94 return os.remove(filename);
2061
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
95 end
2796
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
96 local data = serialize_pair(key, value);
2061
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
97 return dm.append_raw(user, module.host, self.store, "map", data);
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
98 end
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
99
2796
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
100 local keyval = { remove = REMOVE };
2061
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
101 local keyval_mt = { __index = keyval };
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
102
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
103 function keyval:get(user)
2796
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
104 return map.get(self, user, nil);
2061
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
105 end
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
106
2796
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
107 function keyval:set(user, keyvalues)
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
108 local data = serialize_map(keyvalues);
6a7b7cb7148e mod_storage_appendmap: Factor out serialization into reusable functions
Kim Alvefur <zash@zash.se>
parents: 2635
diff changeset
109 return dm.store_raw(user, module.host, self.store, "map", data);
2062
8f7083b980cf mod_storage_appendmap: Fix keyvalue:set()
Kim Alvefur <zash@zash.se>
parents: 2061
diff changeset
110 end
2061
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
111
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
112 -- TODO some kind of periodic compaction thing?
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
113 function map:_compact(user)
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
114 local data = self:get(user);
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
115 return keyval.set(self, user, data);
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
116 end
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
117
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
118 function driver:open(store, typ)
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
119 if typ == "map" then
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
120 return setmetatable({ store = store, }, map_mt);
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
121 elseif typ == nil or typ == "keyval" then
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
122 return setmetatable({ store = store, }, keyval_mt);
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
123 end
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
124 return nil, "unsupported-store";
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
125 end
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
126
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
127 module:provides("storage", driver);
b84284144e21 mod_storage_appendmap: Experimental storage module optimized for map stores
Kim Alvefur <zash@zash.se>
parents:
diff changeset
128