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util/sql.lua

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util/sql.lua @ 9612:abf9bacf77d4 0.11

MUC: Clarify condition with parenthesis
author Kim Alvefur <zash@zash.se>
date Fri, 09 Nov 2018 18:40:13 +0100
parent 8555:4f0f5b49bb03
child 9616:61376a3c0c1d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1
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2 local setmetatable, getmetatable = setmetatable, getmetatable;
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3 local ipairs, unpack, select = ipairs, table.unpack or unpack, select; --luacheck: ignore 113 143
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4 local tostring = tostring;
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5 local type = type;
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6 local assert, pcall, xpcall, debug_traceback = assert, pcall, xpcall, debug.traceback;
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7 local t_concat = table.concat;
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8 local log = require "util.logger".init("sql");
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10 local DBI = require "DBI";
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11 -- This loads all available drivers while globals are unlocked
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12 -- LuaDBI should be fixed to not set globals.
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13 DBI.Drivers();
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14 local build_url = require "socket.url".build;
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16 local _ENV = nil;
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17 -- luacheck: std none
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19 local column_mt = {};
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20 local table_mt = {};
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21 local query_mt = {};
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22 --local op_mt = {};
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23 local index_mt = {};
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25 local function is_column(x) return getmetatable(x)==column_mt; end
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26 local function is_index(x) return getmetatable(x)==index_mt; end
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27 local function is_table(x) return getmetatable(x)==table_mt; end
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28 local function is_query(x) return getmetatable(x)==query_mt; end
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29 local function Integer() return "Integer()" end
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30 local function String() return "String()" end
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31
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32 local function Column(definition)
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33 return setmetatable(definition, column_mt);
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34 end
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35 local function Table(definition)
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36 local c = {}
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37 for i,col in ipairs(definition) do
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38 if is_column(col) then
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39 c[i], c[col.name] = col, col;
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40 elseif is_index(col) then
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41 col.table = definition.name;
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42 end
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43 end
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44 return setmetatable({ __table__ = definition, c = c, name = definition.name }, table_mt);
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45 end
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46 local function Index(definition)
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47 return setmetatable(definition, index_mt);
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48 end
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50 function table_mt:__tostring()
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51 local s = { 'name="'..self.__table__.name..'"' }
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52 for _, col in ipairs(self.__table__) do
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53 s[#s+1] = tostring(col);
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54 end
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55 return 'Table{ '..t_concat(s, ", ")..' }'
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56 end
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57 table_mt.__index = {};
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58 function table_mt.__index:create(engine)
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59 return engine:_create_table(self);
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60 end
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61 function column_mt:__tostring()
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62 return 'Column{ name="'..self.name..'", type="'..self.type..'" }'
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63 end
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64 function index_mt:__tostring()
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65 local s = 'Index{ name="'..self.name..'"';
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66 for i=1,#self do s = s..', "'..self[i]:gsub("[\\\"]", "\\%1")..'"'; end
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67 return s..' }';
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68 -- return 'Index{ name="'..self.name..'", type="'..self.type..'" }'
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69 end
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70
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71 local engine = {};
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72 function engine:connect()
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73 if self.conn then return true; end
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75 local params = self.params;
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76 assert(params.driver, "no driver")
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77 log("debug", "Connecting to [%s] %s...", params.driver, params.database);
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78 local ok, dbh, err = pcall(DBI.Connect,
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79 params.driver, params.database,
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80 params.username, params.password,
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81 params.host, params.port
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82 );
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83 if not ok then return ok, dbh; end
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84 if not dbh then return nil, err; end
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85 dbh:autocommit(false); -- don't commit automatically
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86 self.conn = dbh;
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87 self.prepared = {};
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88 local ok, err = self:set_encoding();
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89 if not ok then
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90 return ok, err;
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91 end
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92 local ok, err = self:onconnect();
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93 if ok == false then
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94 return ok, err;
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95 end
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96 return true;
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97 end
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98 function engine:onconnect() -- luacheck: ignore 212/self
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99 -- Override from create_engine()
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100 end
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101
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102 function engine:prepquery(sql)
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103 if self.params.driver == "MySQL" then
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104 sql = sql:gsub("\"", "`");
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105 end
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106 return sql;
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107 end
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108
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109 function engine:execute(sql, ...)
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110 local success, err = self:connect();
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111 if not success then return success, err; end
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112 local prepared = self.prepared;
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113
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114 sql = self:prepquery(sql);
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115 local stmt = prepared[sql];
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116 if not stmt then
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117 local err;
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118 stmt, err = self.conn:prepare(sql);
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119 if not stmt then return stmt, err; end
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120 prepared[sql] = stmt;
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121 end
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122
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123 -- luacheck: ignore 411/success
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124 local success, err = stmt:execute(...);
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125 if not success then return success, err; end
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126 return stmt;
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127 end
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128
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129 local result_mt = { __index = {
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130 affected = function(self) return self.__stmt:affected(); end;
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131 rowcount = function(self) return self.__stmt:rowcount(); end;
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132 } };
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133
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134 local function debugquery(where, sql, ...)
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135 local i = 0; local a = {...}
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136 sql = sql:gsub("\n?\t+", " ");
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137 log("debug", "[%s] %s", where, (sql:gsub("%?", function ()
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138 i = i + 1;
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139 local v = a[i];
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140 if type(v) == "string" then
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141 v = ("'%s'"):format(v:gsub("'", "''"));
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142 end
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143 return tostring(v);
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144 end)));
7174
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145 end
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146
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147 function engine:execute_query(sql, ...)
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148 sql = self:prepquery(sql);
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149 local stmt = assert(self.conn:prepare(sql));
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150 assert(stmt:execute(...));
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151 local result = {};
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152 for row in stmt:rows() do result[#result + 1] = row; end
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153 stmt:close();
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154 local i = 0;
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155 return function() i=i+1; return result[i]; end;
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156 end
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157 function engine:execute_update(sql, ...)
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158 sql = self:prepquery(sql);
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159 local prepared = self.prepared;
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160 local stmt = prepared[sql];
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161 if not stmt then
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162 stmt = assert(self.conn:prepare(sql));
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163 prepared[sql] = stmt;
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164 end
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165 assert(stmt:execute(...));
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166 return setmetatable({ __stmt = stmt }, result_mt);
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167 end
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168 engine.insert = engine.execute_update;
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169 engine.select = engine.execute_query;
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170 engine.delete = engine.execute_update;
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171 engine.update = engine.execute_update;
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172 local function debugwrap(name, f)
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173 return function (self, sql, ...)
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174 debugquery(name, sql, ...)
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175 return f(self, sql, ...)
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176 end
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177 end
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178 function engine:debug(enable)
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179 self._debug = enable;
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180 if enable then
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181 engine.insert = debugwrap("insert", engine.execute_update);
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182 engine.select = debugwrap("select", engine.execute_query);
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183 engine.delete = debugwrap("delete", engine.execute_update);
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184 engine.update = debugwrap("update", engine.execute_update);
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185 else
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186 engine.insert = engine.execute_update;
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187 engine.select = engine.execute_query;
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188 engine.delete = engine.execute_update;
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189 engine.update = engine.execute_update;
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190 end
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191 end
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192 local function handleerr(err)
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193 local trace = debug_traceback(err, 3);
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194 log("debug", "Error in SQL transaction: %s", trace);
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195 return { err = err, traceback = trace };
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196 end
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197 function engine:_transaction(func, ...)
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198 if not self.conn then
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199 local ok, err = self:connect();
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200 if not ok then return ok, err; end
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201 end
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202 --assert(not self.__transaction, "Recursive transactions not allowed");
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203 local args, n_args = {...}, select("#", ...);
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204 local function f() return func(unpack(args, 1, n_args)); end
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diff changeset
205 log("debug", "SQL transaction begin [%s]", tostring(func));
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diff changeset
206 self.__transaction = true;
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207 local success, a, b, c = xpcall(f, handleerr);
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diff changeset
208 self.__transaction = nil;
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diff changeset
209 if success then
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diff changeset
210 log("debug", "SQL transaction success [%s]", tostring(func));
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parents:
diff changeset
211 local ok, err = self.conn:commit();
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diff changeset
212 -- LuaDBI doesn't actually return an error message here, just a boolean
6a098961bc00 util.sql: Return an error message when a SQL commit fails (LuaDBI doesn't) (Thanks Ge0rG)
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diff changeset
213 if not ok then return ok, err or "commit failed"; end
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214 return success, a, b, c;
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diff changeset
215 else
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parents: 8186
diff changeset
216 log("debug", "SQL transaction failure [%s]: %s", tostring(func), a.err);
5494
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
217 if self.conn then self.conn:rollback(); end
8288
e9ac2d93de18 util.sql: Don't log at error level if a transaction failed and was retried ok
Matthew Wild <mwild1@gmail.com>
parents: 8186
diff changeset
218 return success, a.err;
5494
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
219 end
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
220 end
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
221 function engine:transaction(...)
6733
36e2b35397b1 util.sql: Rename some variable to match conventions
Matthew Wild <mwild1@gmail.com>
parents: 6730
diff changeset
222 local ok, ret = self:_transaction(...);
36e2b35397b1 util.sql: Rename some variable to match conventions
Matthew Wild <mwild1@gmail.com>
parents: 6730
diff changeset
223 if not ok then
5494
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
224 local conn = self.conn;
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
225 if not conn or not conn:ping() then
8288
e9ac2d93de18 util.sql: Don't log at error level if a transaction failed and was retried ok
Matthew Wild <mwild1@gmail.com>
parents: 8186
diff changeset
226 log("debug", "Database connection was closed. Will reconnect and retry.");
5494
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
227 self.conn = nil;
8288
e9ac2d93de18 util.sql: Don't log at error level if a transaction failed and was retried ok
Matthew Wild <mwild1@gmail.com>
parents: 8186
diff changeset
228 log("debug", "Retrying SQL transaction [%s]", tostring((...)));
6733
36e2b35397b1 util.sql: Rename some variable to match conventions
Matthew Wild <mwild1@gmail.com>
parents: 6730
diff changeset
229 ok, ret = self:_transaction(...);
8288
e9ac2d93de18 util.sql: Don't log at error level if a transaction failed and was retried ok
Matthew Wild <mwild1@gmail.com>
parents: 8186
diff changeset
230 log("debug", "SQL transaction retry %s", ok and "succeeded" or "failed");
e9ac2d93de18 util.sql: Don't log at error level if a transaction failed and was retried ok
Matthew Wild <mwild1@gmail.com>
parents: 8186
diff changeset
231 else
e9ac2d93de18 util.sql: Don't log at error level if a transaction failed and was retried ok
Matthew Wild <mwild1@gmail.com>
parents: 8186
diff changeset
232 log("debug", "SQL connection is up, so not retrying");
e9ac2d93de18 util.sql: Don't log at error level if a transaction failed and was retried ok
Matthew Wild <mwild1@gmail.com>
parents: 8186
diff changeset
233 end
e9ac2d93de18 util.sql: Don't log at error level if a transaction failed and was retried ok
Matthew Wild <mwild1@gmail.com>
parents: 8186
diff changeset
234 if not ok then
e9ac2d93de18 util.sql: Don't log at error level if a transaction failed and was retried ok
Matthew Wild <mwild1@gmail.com>
parents: 8186
diff changeset
235 log("error", "Error in SQL transaction: %s", ret);
5494
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
236 end
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
237 end
6733
36e2b35397b1 util.sql: Rename some variable to match conventions
Matthew Wild <mwild1@gmail.com>
parents: 6730
diff changeset
238 return ok, ret;
5494
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
239 end
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
240 function engine:_create_index(index)
8073
7361412a9664 SQL: Use standard quotes for columns and other identifiers, rewrite to grave accents for MySQL only (fixes #885)
Kim Alvefur <zash@zash.se>
parents: 7513
diff changeset
241 local sql = "CREATE INDEX \""..index.name.."\" ON \""..index.table.."\" (";
5494
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
242 for i=1,#index do
8073
7361412a9664 SQL: Use standard quotes for columns and other identifiers, rewrite to grave accents for MySQL only (fixes #885)
Kim Alvefur <zash@zash.se>
parents: 7513
diff changeset
243 sql = sql.."\""..index[i].."\"";
5494
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
244 if i ~= #index then sql = sql..", "; end
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
245 end
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
246 sql = sql..");"
8073
7361412a9664 SQL: Use standard quotes for columns and other identifiers, rewrite to grave accents for MySQL only (fixes #885)
Kim Alvefur <zash@zash.se>
parents: 7513
diff changeset
247 if self.params.driver == "MySQL" then
7361412a9664 SQL: Use standard quotes for columns and other identifiers, rewrite to grave accents for MySQL only (fixes #885)
Kim Alvefur <zash@zash.se>
parents: 7513
diff changeset
248 sql = sql:gsub("\"([,)])", "\"(20)%1");
5494
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
249 end
5885
cbc25ae1eea0 util.sql: Allow creating unique indices
Kim Alvefur <zash@zash.se>
parents: 5883
diff changeset
250 if index.unique then
cbc25ae1eea0 util.sql: Allow creating unique indices
Kim Alvefur <zash@zash.se>
parents: 5883
diff changeset
251 sql = sql:gsub("^CREATE", "CREATE UNIQUE");
cbc25ae1eea0 util.sql: Allow creating unique indices
Kim Alvefur <zash@zash.se>
parents: 5883
diff changeset
252 end
7174
d350e475f94e util.sql: Raw query debug logging (needs to be explicitly enabled by a plugin)
Kim Alvefur <zash@zash.se>
parents: 6806
diff changeset
253 if self._debug then
d350e475f94e util.sql: Raw query debug logging (needs to be explicitly enabled by a plugin)
Kim Alvefur <zash@zash.se>
parents: 6806
diff changeset
254 debugquery("create", sql);
d350e475f94e util.sql: Raw query debug logging (needs to be explicitly enabled by a plugin)
Kim Alvefur <zash@zash.se>
parents: 6806
diff changeset
255 end
5494
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
256 return self:execute(sql);
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
257 end
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
258 function engine:_create_table(table)
8073
7361412a9664 SQL: Use standard quotes for columns and other identifiers, rewrite to grave accents for MySQL only (fixes #885)
Kim Alvefur <zash@zash.se>
parents: 7513
diff changeset
259 local sql = "CREATE TABLE \""..table.name.."\" (";
5494
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
260 for i,col in ipairs(table.c) do
5890
544ca3d94596 util.sql: Rewrite MEDIUMTEXT to TEXT for drivers other than MySQL
Kim Alvefur <zash@zash.se>
parents: 5889
diff changeset
261 local col_type = col.type;
544ca3d94596 util.sql: Rewrite MEDIUMTEXT to TEXT for drivers other than MySQL
Kim Alvefur <zash@zash.se>
parents: 5889
diff changeset
262 if col_type == "MEDIUMTEXT" and self.params.driver ~= "MySQL" then
544ca3d94596 util.sql: Rewrite MEDIUMTEXT to TEXT for drivers other than MySQL
Kim Alvefur <zash@zash.se>
parents: 5889
diff changeset
263 col_type = "TEXT"; -- MEDIUMTEXT is MySQL-specific
544ca3d94596 util.sql: Rewrite MEDIUMTEXT to TEXT for drivers other than MySQL
Kim Alvefur <zash@zash.se>
parents: 5889
diff changeset
264 end
5912
f6145e894569 util.sql: Rewrite auto increment columns to SERIAL for PostgreSQL
Kim Alvefur <zash@zash.se>
parents: 5910
diff changeset
265 if col.auto_increment == true and self.params.driver == "PostgreSQL" then
f6145e894569 util.sql: Rewrite auto increment columns to SERIAL for PostgreSQL
Kim Alvefur <zash@zash.se>
parents: 5910
diff changeset
266 col_type = "BIGSERIAL";
f6145e894569 util.sql: Rewrite auto increment columns to SERIAL for PostgreSQL
Kim Alvefur <zash@zash.se>
parents: 5910
diff changeset
267 end
8073
7361412a9664 SQL: Use standard quotes for columns and other identifiers, rewrite to grave accents for MySQL only (fixes #885)
Kim Alvefur <zash@zash.se>
parents: 7513
diff changeset
268 sql = sql.."\""..col.name.."\" "..col_type;
5494
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
269 if col.nullable == false then sql = sql.." NOT NULL"; end
5886
1237f9cc3123 util.sql: Allow columns to be marked the primary key
Kim Alvefur <zash@zash.se>
parents: 5885
diff changeset
270 if col.primary_key == true then sql = sql.." PRIMARY KEY"; end
5887
1f860279b2f8 util.sql: Support incrementing columns
Kim Alvefur <zash@zash.se>
parents: 5886
diff changeset
271 if col.auto_increment == true then
5912
f6145e894569 util.sql: Rewrite auto increment columns to SERIAL for PostgreSQL
Kim Alvefur <zash@zash.se>
parents: 5910
diff changeset
272 if self.params.driver == "MySQL" then
5887
1f860279b2f8 util.sql: Support incrementing columns
Kim Alvefur <zash@zash.se>
parents: 5886
diff changeset
273 sql = sql.." AUTO_INCREMENT";
1f860279b2f8 util.sql: Support incrementing columns
Kim Alvefur <zash@zash.se>
parents: 5886
diff changeset
274 elseif self.params.driver == "SQLite3" then
1f860279b2f8 util.sql: Support incrementing columns
Kim Alvefur <zash@zash.se>
parents: 5886
diff changeset
275 sql = sql.." AUTOINCREMENT";
1f860279b2f8 util.sql: Support incrementing columns
Kim Alvefur <zash@zash.se>
parents: 5886
diff changeset
276 end
1f860279b2f8 util.sql: Support incrementing columns
Kim Alvefur <zash@zash.se>
parents: 5886
diff changeset
277 end
5494
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
278 if i ~= #table.c then sql = sql..", "; end
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
279 end
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
280 sql = sql.. ");"
8073
7361412a9664 SQL: Use standard quotes for columns and other identifiers, rewrite to grave accents for MySQL only (fixes #885)
Kim Alvefur <zash@zash.se>
parents: 7513
diff changeset
281 if self.params.driver == "MySQL" then
6759
fb952032f83e util.sql: Create table with same charset as the charset we selected for our connection, also use corresponding _bin collation
Matthew Wild <mwild1@gmail.com>
parents: 6758
diff changeset
282 sql = sql:gsub(";$", (" CHARACTER SET '%s' COLLATE '%s_bin';"):format(self.charset, self.charset));
5494
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
283 end
7174
d350e475f94e util.sql: Raw query debug logging (needs to be explicitly enabled by a plugin)
Kim Alvefur <zash@zash.se>
parents: 6806
diff changeset
284 if self._debug then
d350e475f94e util.sql: Raw query debug logging (needs to be explicitly enabled by a plugin)
Kim Alvefur <zash@zash.se>
parents: 6806
diff changeset
285 debugquery("create", sql);
d350e475f94e util.sql: Raw query debug logging (needs to be explicitly enabled by a plugin)
Kim Alvefur <zash@zash.se>
parents: 6806
diff changeset
286 end
5494
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
287 local success,err = self:execute(sql);
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
288 if not success then return success,err; end
7513
8a6c7c4b15fb util.sql: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents: 7431
diff changeset
289 for _, v in ipairs(table.__table__) do
5494
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
290 if is_index(v) then
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
291 self:_create_index(v);
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
292 end
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
293 end
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
294 return success;
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
295 end
5883
39b187e7e892 mod_storage_sql2, util.sql: Move code for setting encoding to util.sql
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
296 function engine:set_encoding() -- to UTF-8
5888
f3e408ae59a6 util.sql: Find out if MySQL supports utf8mb4 and use that
Kim Alvefur <zash@zash.se>
parents: 5887
diff changeset
297 local driver = self.params.driver;
5889
ea6a3adb6a69 util.sql: Check what encoding SQLite3 uses
Kim Alvefur <zash@zash.se>
parents: 5888
diff changeset
298 if driver == "SQLite3" then
ea6a3adb6a69 util.sql: Check what encoding SQLite3 uses
Kim Alvefur <zash@zash.se>
parents: 5888
diff changeset
299 return self:transaction(function()
7275
187ba2e9c012 util.sql: Don't break out of result retreival loops
Kim Alvefur <zash@zash.se>
parents: 7272
diff changeset
300 for encoding in self:select"PRAGMA encoding;" do
187ba2e9c012 util.sql: Don't break out of result retreival loops
Kim Alvefur <zash@zash.se>
parents: 7272
diff changeset
301 if encoding[1] == "UTF-8" then
187ba2e9c012 util.sql: Don't break out of result retreival loops
Kim Alvefur <zash@zash.se>
parents: 7272
diff changeset
302 self.charset = "utf8";
187ba2e9c012 util.sql: Don't break out of result retreival loops
Kim Alvefur <zash@zash.se>
parents: 7272
diff changeset
303 end
5889
ea6a3adb6a69 util.sql: Check what encoding SQLite3 uses
Kim Alvefur <zash@zash.se>
parents: 5888
diff changeset
304 end
ea6a3adb6a69 util.sql: Check what encoding SQLite3 uses
Kim Alvefur <zash@zash.se>
parents: 5888
diff changeset
305 end);
ea6a3adb6a69 util.sql: Check what encoding SQLite3 uses
Kim Alvefur <zash@zash.se>
parents: 5888
diff changeset
306 end
5888
f3e408ae59a6 util.sql: Find out if MySQL supports utf8mb4 and use that
Kim Alvefur <zash@zash.se>
parents: 5887
diff changeset
307 local set_names_query = "SET NAMES '%s';"
f3e408ae59a6 util.sql: Find out if MySQL supports utf8mb4 and use that
Kim Alvefur <zash@zash.se>
parents: 5887
diff changeset
308 local charset = "utf8";
f3e408ae59a6 util.sql: Find out if MySQL supports utf8mb4 and use that
Kim Alvefur <zash@zash.se>
parents: 5887
diff changeset
309 if driver == "MySQL" then
7275
187ba2e9c012 util.sql: Don't break out of result retreival loops
Kim Alvefur <zash@zash.se>
parents: 7272
diff changeset
310 self:transaction(function()
8382
e5d00bf4a4d5 util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents: 8380
diff changeset
311 for row in self:select[[
e5d00bf4a4d5 util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents: 8380
diff changeset
312 SELECT "CHARACTER_SET_NAME"
e5d00bf4a4d5 util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents: 8380
diff changeset
313 FROM "information_schema"."CHARACTER_SETS"
e5d00bf4a4d5 util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents: 8380
diff changeset
314 WHERE "CHARACTER_SET_NAME" LIKE 'utf8%'
e5d00bf4a4d5 util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents: 8380
diff changeset
315 ORDER BY MAXLEN DESC LIMIT 1;
e5d00bf4a4d5 util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents: 8380
diff changeset
316 ]] do
7275
187ba2e9c012 util.sql: Don't break out of result retreival loops
Kim Alvefur <zash@zash.se>
parents: 7272
diff changeset
317 charset = row and row[1] or charset;
187ba2e9c012 util.sql: Don't break out of result retreival loops
Kim Alvefur <zash@zash.se>
parents: 7272
diff changeset
318 end
5888
f3e408ae59a6 util.sql: Find out if MySQL supports utf8mb4 and use that
Kim Alvefur <zash@zash.se>
parents: 5887
diff changeset
319 end);
6760
e45a58c72609 util.sql: Use appropriate collation for the chosen character set - fixes MySQL silently ignoring our SET NAMES command when we use utf8mb4
Matthew Wild <mwild1@gmail.com>
parents: 6759
diff changeset
320 set_names_query = set_names_query:gsub(";$", (" COLLATE '%s';"):format(charset.."_bin"));
5883
39b187e7e892 mod_storage_sql2, util.sql: Move code for setting encoding to util.sql
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
321 end
5888
f3e408ae59a6 util.sql: Find out if MySQL supports utf8mb4 and use that
Kim Alvefur <zash@zash.se>
parents: 5887
diff changeset
322 self.charset = charset;
6763
e961ac4efbb3 util.sql: Make set_encoding() return failure of SET NAMES
Matthew Wild <mwild1@gmail.com>
parents: 6762
diff changeset
323 log("debug", "Using encoding '%s' for database connection", charset);
e961ac4efbb3 util.sql: Make set_encoding() return failure of SET NAMES
Matthew Wild <mwild1@gmail.com>
parents: 6762
diff changeset
324 local ok, err = self:transaction(function() return self:execute(set_names_query:format(charset)); end);
e961ac4efbb3 util.sql: Make set_encoding() return failure of SET NAMES
Matthew Wild <mwild1@gmail.com>
parents: 6762
diff changeset
325 if not ok then
e961ac4efbb3 util.sql: Make set_encoding() return failure of SET NAMES
Matthew Wild <mwild1@gmail.com>
parents: 6762
diff changeset
326 return ok, err;
e961ac4efbb3 util.sql: Make set_encoding() return failure of SET NAMES
Matthew Wild <mwild1@gmail.com>
parents: 6762
diff changeset
327 end
6771
60957dd5b41b util.{interpolation,prosodyctl,sql}: Trim trailing whitespace
Kim Alvefur <zash@zash.se>
parents: 6766
diff changeset
328
6766
b38db4b634d3 util.sql: Add safety check to ensure our chosen connection charset is actually being used (MySQL)
Matthew Wild <mwild1@gmail.com>
parents: 6765
diff changeset
329 if driver == "MySQL" then
b38db4b634d3 util.sql: Add safety check to ensure our chosen connection charset is actually being used (MySQL)
Matthew Wild <mwild1@gmail.com>
parents: 6765
diff changeset
330 local ok, actual_charset = self:transaction(function ()
b38db4b634d3 util.sql: Add safety check to ensure our chosen connection charset is actually being used (MySQL)
Matthew Wild <mwild1@gmail.com>
parents: 6765
diff changeset
331 return self:select"SHOW SESSION VARIABLES LIKE 'character_set_client'";
b38db4b634d3 util.sql: Add safety check to ensure our chosen connection charset is actually being used (MySQL)
Matthew Wild <mwild1@gmail.com>
parents: 6765
diff changeset
332 end);
7312
b4e99602ae75 util.sql: Charset should be innocent until proven guilty (initialize charset_ok to true), fixes bug introduced in 187ba2e9c012
Matthew Wild <mwild1@gmail.com>
parents: 7306
diff changeset
333 local charset_ok = true;
6766
b38db4b634d3 util.sql: Add safety check to ensure our chosen connection charset is actually being used (MySQL)
Matthew Wild <mwild1@gmail.com>
parents: 6765
diff changeset
334 for row in actual_charset do
b38db4b634d3 util.sql: Add safety check to ensure our chosen connection charset is actually being used (MySQL)
Matthew Wild <mwild1@gmail.com>
parents: 6765
diff changeset
335 if row[2] ~= charset then
b38db4b634d3 util.sql: Add safety check to ensure our chosen connection charset is actually being used (MySQL)
Matthew Wild <mwild1@gmail.com>
parents: 6765
diff changeset
336 log("error", "MySQL %s is actually %q (expected %q)", row[1], row[2], charset);
7275
187ba2e9c012 util.sql: Don't break out of result retreival loops
Kim Alvefur <zash@zash.se>
parents: 7272
diff changeset
337 charset_ok = false;
6766
b38db4b634d3 util.sql: Add safety check to ensure our chosen connection charset is actually being used (MySQL)
Matthew Wild <mwild1@gmail.com>
parents: 6765
diff changeset
338 end
b38db4b634d3 util.sql: Add safety check to ensure our chosen connection charset is actually being used (MySQL)
Matthew Wild <mwild1@gmail.com>
parents: 6765
diff changeset
339 end
7275
187ba2e9c012 util.sql: Don't break out of result retreival loops
Kim Alvefur <zash@zash.se>
parents: 7272
diff changeset
340 if not charset_ok then
187ba2e9c012 util.sql: Don't break out of result retreival loops
Kim Alvefur <zash@zash.se>
parents: 7272
diff changeset
341 return false, "Failed to set connection encoding";
187ba2e9c012 util.sql: Don't break out of result retreival loops
Kim Alvefur <zash@zash.se>
parents: 7272
diff changeset
342 end
6766
b38db4b634d3 util.sql: Add safety check to ensure our chosen connection charset is actually being used (MySQL)
Matthew Wild <mwild1@gmail.com>
parents: 6765
diff changeset
343 end
6771
60957dd5b41b util.{interpolation,prosodyctl,sql}: Trim trailing whitespace
Kim Alvefur <zash@zash.se>
parents: 6766
diff changeset
344
6763
e961ac4efbb3 util.sql: Make set_encoding() return failure of SET NAMES
Matthew Wild <mwild1@gmail.com>
parents: 6762
diff changeset
345 return true;
5883
39b187e7e892 mod_storage_sql2, util.sql: Move code for setting encoding to util.sql
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
346 end
5494
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
347 local engine_mt = { __index = engine };
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
348
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6771
diff changeset
349 local function db2uri(params)
5494
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
350 return build_url{
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
351 scheme = params.driver,
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
352 user = params.username,
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
353 password = params.password,
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
354 host = params.host,
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
355 port = params.port,
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
356 path = params.database,
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
357 };
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
358 end
6735
b553a30620b2 util.sql: Remove built-in engine caching. This is the wrong layer to do this, and unintentionally sharing connections could cause problems (e.g. when interleaving multiple queries and result fetching)
Matthew Wild <mwild1@gmail.com>
parents: 6734
diff changeset
359
8382
e5d00bf4a4d5 util: Various minor changes to please [luacheck]
Kim Alvefur <zash@zash.se>
parents: 8380
diff changeset
360 local function create_engine(_, params, onconnect)
6735
b553a30620b2 util.sql: Remove built-in engine caching. This is the wrong layer to do this, and unintentionally sharing connections could cause problems (e.g. when interleaving multiple queries and result fetching)
Matthew Wild <mwild1@gmail.com>
parents: 6734
diff changeset
361 return setmetatable({ url = db2uri(params), params = params, onconnect = onconnect }, engine_mt);
5494
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
362 end
9916f0a2d178 mod_storage_sql2 (temporary name), sql.lib, util.sql: New SQL API supporting cross-module connection sharing, transactions and Things - a work in progress
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
363
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6771
diff changeset
364 return {
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6771
diff changeset
365 is_column = is_column;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6771
diff changeset
366 is_index = is_index;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6771
diff changeset
367 is_table = is_table;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6771
diff changeset
368 is_query = is_query;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6771
diff changeset
369 Integer = Integer;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6771
diff changeset
370 String = String;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6771
diff changeset
371 Column = Column;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6771
diff changeset
372 Table = Table;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6771
diff changeset
373 Index = Index;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6771
diff changeset
374 create_engine = create_engine;
6806
f824057189ed util.sql: Export db2uri (mod_storage_sql2 command uses it) (thanks mike)
Kim Alvefur <zash@zash.se>
parents: 6805
diff changeset
375 db2uri = db2uri;
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6771
diff changeset
376 };