Software / code / verse
Annotate
init.lua @ 135:8adf5fb27ce3
verse: Fire disconnected event even if connection fails instantly
| author | Matthew Wild <mwild1@gmail.com> |
|---|---|
| date | Tue, 14 Sep 2010 15:02:29 +0100 |
| parent | 132:b38397163737 |
| child | 141:15706f6492ae |
| rev | line source |
|---|---|
| 0 | 1 |
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17
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verse: Include LuaRocks packages if we can
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2 -- Use LuaRocks if available |
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3 pcall(require, "luarocks.require"); |
| 0 | 4 |
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5 -- Load LuaSec if available |
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6 pcall(require, "ssl"); |
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7 |
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8 local server = require "net.server"; |
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9 local events = require "util.events"; |
| 0 | 10 |
| 11 module("verse", package.seeall); | |
| 12 local verse = _M; | |
| 13 | |
| 14 local stream = {}; | |
| 15 stream.__index = stream; | |
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16 stream_mt = stream; |
| 0 | 17 |
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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; |
| 0 | 26 end |
| 27 | |
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28 verse.add_task = require "util.timer".add_task; |
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29 |
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verse: Add verse.log() to log a message using the default logger. Also add verse.set_error_handler() to, er, set an error handler.
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30 verse.logger = logger.init; |
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31 verse.log = verse.logger("verse"); |
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32 |
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33 function verse.set_logger(logger) |
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34 verse.log = logger("verse"); |
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35 server.setlogger(logger); |
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36 end |
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37 |
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38 local function error_handler(err) |
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39 verse.log("error", "Error: %s", err); |
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40 verse.log("error", "Traceback: %s", debug.traceback()); |
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41 end |
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42 |
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43 function verse.set_error_handler(new_error_handler) |
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44 error_handler = new_error_handler; |
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45 end |
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46 |
| 0 | 47 function verse.loop() |
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48 return xpcall(server.loop, error_handler); |
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49 end |
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50 |
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51 function verse.step() |
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52 return xpcall(server.step, error_handler); |
| 0 | 53 end |
| 54 | |
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45
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verse: Add verse.quit() to exit the event loop
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55 function verse.quit() |
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56 return server.setquitting(true); |
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57 end |
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58 |
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59 function stream:connect(connect_host, connect_port) |
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60 connect_host = connect_host or "localhost"; |
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61 connect_port = tonumber(connect_port) or 5222; |
| 0 | 62 |
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63 -- Create and initiate connection |
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64 local conn = socket.tcp() |
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65 conn:settimeout(0); |
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66 local success, err = conn:connect(connect_host, connect_port); |
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67 |
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68 if not success and err ~= "timeout" then |
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69 self:warn("connect() to %s:%d failed: %s", connect_host, connect_port, err); |
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70 return self:event("disconnected", { reason = err }) or false, err; |
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71 end |
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72 |
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verse: Remove some useless comments
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73 local conn = server.wrapclient(conn, connect_host, connect_port, new_listener(self), "*a"); |
| 0 | 74 if not conn then |
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75 self:warn("connection initialisation failed: %s", err); |
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76 return self:event("disconnected", { reason = err }) or false, err; |
| 0 | 77 end |
| 78 | |
| 79 self.conn = conn; | |
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80 local w, t = conn.write, tostring; |
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81 self.send = function (_, data) return w(conn, t(data)); end |
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82 return true; |
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83 end |
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84 |
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85 function stream:close() |
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132
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verse: Log error and return when trying to close a closed connection
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86 if not self.conn then |
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87 verse.log("error", "Attempt to close disconnected connection - possibly a bug"); |
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88 return; |
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89 end |
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96
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90 local on_disconnect = self.conn.disconnect(); |
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91 self.conn:close(); |
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92 on_disconnect(conn, reason); |
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93 end |
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94 |
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95 -- Logging functions |
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96 function stream:debug(...) |
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97 if self.logger and self.log.debug then |
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98 return self.logger("debug", ...); |
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99 end |
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100 end |
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101 |
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102 function stream:warn(...) |
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103 if self.logger and self.log.warn then |
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104 return self.logger("warn", ...); |
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105 end |
| 0 | 106 end |
| 107 | |
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108 function stream:error(...) |
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109 if self.logger and self.log.error then |
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110 return self.logger("error", ...); |
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111 end |
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112 end |
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113 |
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114 function stream:set_logger(logger, levels) |
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115 local old_logger = self.logger; |
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116 if logger then |
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117 self.logger = logger; |
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118 end |
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119 if levels then |
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120 if levels == true then |
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121 levels = { "debug", "info", "warn", "error" }; |
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122 end |
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123 self.log = {}; |
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124 for _, level in ipairs(levels) do |
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125 self.log[level] = true; |
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126 end |
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127 end |
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128 return old_logger; |
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129 end |
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130 |
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94
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131 function stream_mt:set_log_levels(levels) |
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132 self:set_logger(nil, levels); |
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133 end |
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134 |
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135 -- Event handling |
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136 function stream:event(name, ...) |
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137 self:debug("Firing event: "..tostring(name)); |
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138 return self.events.fire_event(name, ...); |
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139 end |
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140 |
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141 function stream:hook(name, ...) |
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142 return self.events.add_handler(name, ...); |
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143 end |
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144 |
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145 function stream:unhook(name, handler) |
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146 return self.events.remove_handler(name, handler); |
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147 end |
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148 |
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149 function verse.eventable(object) |
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150 object.events = events.new(); |
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151 object.hook, object.unhook = stream.hook, stream.unhook; |
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152 local fire_event = object.events.fire_event; |
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153 function object:event(name, ...) |
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154 return fire_event(name, ...); |
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155 end |
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156 return object; |
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157 end |
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158 |
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159 function stream:add_plugin(name) |
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160 if require("verse.plugins."..name) then |
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161 local ok, err = verse.plugins[name](self); |
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162 if ok then |
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163 self:debug("Loaded %s plugin", name); |
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164 else |
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165 self:warn("Failed to load %s plugin: %s", name, err); |
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166 end |
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167 end |
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168 return self; |
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169 end |
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170 |
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171 -- Listener factory |
| 0 | 172 function new_listener(stream) |
| 173 local conn_listener = {}; | |
| 174 | |
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175 function conn_listener.onconnect(conn) |
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176 stream.connected = true; |
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177 stream.send = function (stream, data) stream:debug("Sending data: "..tostring(data)); return conn:write(tostring(data)); end; |
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178 stream:event("connected"); |
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179 end |
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180 |
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181 function conn_listener.onincoming(conn, data) |
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182 stream:event("incoming-raw", data); |
| 0 | 183 end |
| 184 | |
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185 function conn_listener.ondisconnect(conn, err) |
| 0 | 186 stream.connected = false; |
| 187 stream:event("disconnected", { reason = err }); | |
| 188 end | |
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189 |
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190 function conn_listener.ondrain(conn) |
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191 stream:event("drained"); |
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192 end |
| 0 | 193 |
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194 function conn_listener.onstatus(conn, new_status) |
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195 stream:event("status", new_status); |
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196 end |
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197 |
| 0 | 198 return conn_listener; |
| 199 end | |
| 200 | |
| 201 | |
| 202 local log = require "util.logger".init("verse"); | |
| 203 | |
| 204 return verse; |
