verse
d67ad403ca55
init.lua

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init.lua @ 95:d67ad403ca55

verse: Return false rather than nil from connect() on error, for consistency
author Matthew Wild <mwild1@gmail.com>
date Sat, 21 Aug 2010 14:35:51 +0100
parent 94:b40465267fb5
child 96:f0aec10023aa
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1
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2 -- Use LuaRocks if available
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3 pcall(require, "luarocks.require");
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5 -- Load LuaSec if available
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6 pcall(require, "ssl");
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9c96318913f7 Revert module names throughout to their Prosody equivalents
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8 local server = require "net.server";
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9 local events = require "util.events";
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11 module("verse", package.seeall);
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12 local verse = _M;
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14 local stream = {};
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15 stream.__index = stream;
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16 stream_mt = stream;
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18 verse.plugins = {};
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19
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20 function verse.new(logger, base)
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21 local t = setmetatable(base or {}, stream);
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22 t.id = tostring(t):match("%x*$");
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23 t:set_logger(logger, true);
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24 t.events = events.new();
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25 return t;
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26 end
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28 verse.add_task = require "util.timer".add_task;
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30 function verse.loop()
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31 return server.loop();
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32 end
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34 function verse.quit()
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35 return server.setquitting(true);
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36 end
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37
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38 verse.logger = logger.init;
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40 function verse.set_logger(logger)
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41 server.setlogger(logger);
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42 end
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43
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44 function stream:connect(connect_host, connect_port)
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45 connect_host = connect_host or "localhost";
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46 connect_port = tonumber(connect_port) or 5222;
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47
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48 -- Create and initiate connection
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49 local conn = socket.tcp()
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50 conn:settimeout(0);
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51 local success, err = conn:connect(connect_host, connect_port);
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52
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53 if not success and err ~= "timeout" then
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54 self:warn("connect() to %s:%d failed: %s", connect_host, connect_port, err);
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55 return false, err;
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56 end
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57
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58 local conn = server.wrapclient(conn, connect_host, connect_port, new_listener(self), "*a");
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59 if not conn then
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60 return false, err;
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61 end
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63 self.conn = conn;
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64 local w, t = conn.write, tostring;
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65 self.send = function (_, data) return w(conn, t(data)); end
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66 end
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67
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68 -- Logging functions
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69 function stream:debug(...)
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70 if self.logger and self.log.debug then
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71 return self.logger("debug", ...);
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72 end
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73 end
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74
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75 function stream:warn(...)
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76 if self.logger and self.log.warn then
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77 return self.logger("warn", ...);
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78 end
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79 end
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81 function stream:error(...)
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82 if self.logger and self.log.error then
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83 return self.logger("error", ...);
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84 end
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85 end
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86
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87 function stream:set_logger(logger, levels)
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88 local old_logger = self.logger;
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89 if logger then
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90 self.logger = logger;
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91 end
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92 if levels then
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93 if levels == true then
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94 levels = { "debug", "info", "warn", "error" };
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95 end
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96 self.log = {};
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97 for _, level in ipairs(levels) do
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98 self.log[level] = true;
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99 end
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100 end
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101 return old_logger;
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102 end
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103
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104 function stream_mt:set_log_levels(levels)
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105 self:set_logger(nil, levels);
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106 end
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107
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108 -- Event handling
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109 function stream:event(name, ...)
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110 self:debug("Firing event: "..tostring(name));
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111 return self.events.fire_event(name, ...);
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112 end
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113
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114 function stream:hook(name, ...)
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115 return self.events.add_handler(name, ...);
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116 end
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117
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118 function stream:unhook(name, handler)
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119 return self.events.remove_handler(name, handler);
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120 end
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121
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122 function stream:add_plugin(name)
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123 if require("verse.plugins."..name) then
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124 local ok, err = verse.plugins[name](self);
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125 if ok then
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126 self:debug("Loaded %s plugin", name);
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127 else
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128 self:warn("Failed to load %s plugin: %s", name, err);
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129 end
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130 end
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131 return self;
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132 end
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133
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134 -- Listener factory
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135 function new_listener(stream)
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136 local conn_listener = {};
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137
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138 function conn_listener.onconnect(conn)
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139 stream.connected = true;
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140 stream.send = function (stream, data) stream:debug("Sending data: "..tostring(data)); return conn:write(tostring(data)); end;
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141 stream:event("connected");
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142 end
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143
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144 function conn_listener.onincoming(conn, data)
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145 stream:event("incoming-raw", data);
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146 end
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147
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148 function conn_listener.ondisconnect(conn, err)
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149 stream.connected = false;
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150 stream:event("disconnected", { reason = err });
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151 end
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152
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153 function conn_listener.ondrain(conn)
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154 stream:event("drained");
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155 end
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156
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157 function conn_listener.onstatus(conn, new_status)
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158 stream:event("status", new_status);
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159 end
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160
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161 return conn_listener;
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162 end
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163
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164
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165 local log = require "util.logger".init("verse");
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166
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167 return verse;