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annotate mod_statistics/top.lib.lua @ 4619:b11001bd915d

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mod_pubsub_alertmanager: Add a plain text summary
author Kim Alvefur <zash@zash.se>
date Thu, 01 Jul 2021 00:07:27 +0200
parents 66bda434d476
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 local array = require "util.array";
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2 local it = require "util.iterators";
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3 local curses = require "curses";
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4 local stats = module:require "stats".stats;
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5 local time = require "socket".gettime;
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6
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7 local sessions_idle_after = 60;
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8 local stanza_names = {"message", "presence", "iq"};
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9
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10 local top = {};
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11 top.__index = top;
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12
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13 local status_lines = {
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14 "Prosody $version - $time up $up_since, $total_users users, $cpu busy";
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15 "Connections: $total_c2s c2s, $total_s2sout s2sout, $total_s2sin s2sin, $total_component component";
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6c555e7dc942 mod_statistics/top.lua: Adjust displayed memory stats for previous commit (3e2c4f424797)
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16 "Memory: $memory_lua lua, $memory_allocated process ($memory_used in use)";
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17 "Stanzas in: $message_in_per_second message/s, $presence_in_per_second presence/s, $iq_in_per_second iq/s";
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18 "Stanzas out: $message_out_per_second message/s, $presence_out_per_second presence/s, $iq_out_per_second iq/s";
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19 };
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20
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21 function top:draw()
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22 self:draw_status();
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23 self:draw_column_titles();
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24 self:draw_conn_list();
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25 self.statuswin:refresh();
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26 self.listwin:refresh();
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27 --self.infowin:refresh()
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28 self.stdscr:move(#status_lines,0)
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29 end
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30
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31 -- Width specified as cols or % of unused space, defaults to
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32 -- title width if not specified
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33 local conn_list_columns = {
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34 { title = "ID", key = "id", width = "8" };
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35 { title = "JID", key = "jid", width = "100%" };
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36 { title = "STANZAS IN>", key = "total_stanzas_in", align = "right" };
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37 { title = "MSG", key = "message_in", align = "right", width = "4" };
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38 { title = "PRES", key = "presence_in", align = "right", width = "4" };
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39 { title = "IQ", key = "iq_in", align = "right", width = "4" };
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40 { title = "STANZAS OUT>", key = "total_stanzas_out", align = "right" };
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41 { title = "MSG", key = "message_out", align = "right", width = "4" };
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42 { title = "PRES", key = "presence_out", align = "right", width = "4" };
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43 { title = "IQ", key = "iq_out", align = "right", width = "4" };
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44 { title = "BYTES IN", key = "bytes_in", align = "right" };
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45 { title = "BYTES OUT", key = "bytes_out", align = "right" };
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46
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47 };
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48
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49 function top:draw_status()
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50 for row, line in ipairs(status_lines) do
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51 self.statuswin:mvaddstr(row-1, 0, (line:gsub("%$([%w_]+)", self.data)));
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52 self.statuswin:clrtoeol();
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53 end
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54 -- Clear stanza counts
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55 for _, stanza_type in ipairs(stanza_names) do
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56 self.prosody[stanza_type.."_in_per_second"] = 0;
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57 self.prosody[stanza_type.."_out_per_second"] = 0;
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58 end
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59 end
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60
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61 local function padright(s, width)
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62 return s..string.rep(" ", width-#s);
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63 end
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64
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65 local function padleft(s, width)
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66 return string.rep(" ", width-#s)..s;
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67 end
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68
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69 function top:resized()
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70 self:recalc_column_widths();
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71 --self.stdscr:clear();
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72 self:draw();
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73 end
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74
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75 function top:recalc_column_widths()
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76 local widths = {};
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77 self.column_widths = widths;
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78 local total_width = curses.cols()-4;
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79 local free_width = total_width;
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80 for i = 1, #conn_list_columns do
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81 local width = conn_list_columns[i].width or "0";
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82 if not(type(width) == "string" and width:sub(-1) == "%") then
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83 width = math.max(tonumber(width), #conn_list_columns[i].title+1);
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84 widths[i] = width;
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85 free_width = free_width - width;
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86 end
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87 end
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88 for i = 1, #conn_list_columns do
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89 if not widths[i] then
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90 local pc_width = tonumber((conn_list_columns[i].width:gsub("%%$", "")));
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91 widths[i] = math.floor(free_width*(pc_width/100));
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92 end
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93 end
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94 return widths;
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95 end
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96
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97 function top:draw_column_titles()
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98 local widths = self.column_widths;
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99 self.listwin:attron(curses.A_REVERSE);
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100 self.listwin:mvaddstr(0, 0, " ");
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101 for i, column in ipairs(conn_list_columns) do
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102 self.listwin:addstr(padright(column.title, widths[i]));
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103 end
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104 self.listwin:addstr(" ");
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105 self.listwin:attroff(curses.A_REVERSE);
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106 end
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107
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108 local function session_compare(session1, session2)
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109 local stats1, stats2 = session1.stats, session2.stats;
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110 return (stats1.total_stanzas_in + stats1.total_stanzas_out) >
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111 (stats2.total_stanzas_in + stats2.total_stanzas_out);
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112 end
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113
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114 function top:draw_conn_list()
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115 local rows = curses.lines()-(#status_lines+2)-5;
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116 local cutoff_time = time() - sessions_idle_after;
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117 local widths = self.column_widths;
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118 local top_sessions = array.collect(it.values(self.active_sessions)):sort(session_compare);
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119 for index = 1, rows do
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120 local session = top_sessions[index];
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121 if session then
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122 if session.last_update < cutoff_time then
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123 self.active_sessions[session.id] = nil;
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124 else
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125 local row = {};
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126 for i, column in ipairs(conn_list_columns) do
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127 local width = widths[i];
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128 local v = tostring(session[column.key] or ""):sub(1, width);
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129 if #v < width then
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130 if column.align == "right" then
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131 v = padleft(v, width-1).." ";
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132 else
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133 v = padright(v, width);
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134 end
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135 end
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136 table.insert(row, v);
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137 end
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138 if session.updated then
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139 self.listwin:attron(curses.A_BOLD);
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140 end
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141 self.listwin:mvaddstr(index, 0, " "..table.concat(row));
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142 if session.updated then
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143 session.updated = false;
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144 self.listwin:attroff(curses.A_BOLD);
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145 end
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146 end
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147 else
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148 -- FIXME: How to clear a line? It's 5am and I don't feel like reading docs.
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149 self.listwin:move(index, 0);
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150 self.listwin:clrtoeol();
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151 end
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152 end
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153 end
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154
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155 function top:update_stat(name, value)
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156 self.prosody[name] = value;
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157 end
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158
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159 function top:update_session(id, jid, stats)
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160 self.active_sessions[id] = stats;
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161 stats.id, stats.jid, stats.stats = id, jid, stats;
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162 stats.total_bytes = stats.bytes_in + stats.bytes_out;
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163 for _, stanza_type in ipairs(stanza_names) do
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164 self.prosody[stanza_type.."_in_per_second"] = (self.prosody[stanza_type.."_in_per_second"] or 0) + stats[stanza_type.."_in"];
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165 self.prosody[stanza_type.."_out_per_second"] = (self.prosody[stanza_type.."_out_per_second"] or 0) + stats[stanza_type.."_out"];
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166 end
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diff changeset
167 stats.total_stanzas_in = stats.message_in + stats.presence_in + stats.iq_in;
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168 stats.total_stanzas_out = stats.message_out + stats.presence_out + stats.iq_out;
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169 stats.last_update = time();
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170 stats.updated = true;
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diff changeset
171 end
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diff changeset
172
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diff changeset
173 local function new(base)
1072
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174 setmetatable(base, top);
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175 base.data = setmetatable({}, {
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176 __index = function (t, k)
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177 local stat = stats[k];
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178 if stat and stat.tostring then
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179 if type(stat.tostring) == "function" then
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180 return stat.tostring(base.prosody[k]);
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181 elseif type(stat.tostring) == "string" then
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182 local v = base.prosody[k];
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diff changeset
183 if v == nil then
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184 return "?";
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diff changeset
185 end
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186 return (stat.tostring):format(v);
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diff changeset
187 end
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parents:
diff changeset
188 end
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diff changeset
189 return base.prosody[k];
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diff changeset
190 end;
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diff changeset
191 });
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parents:
diff changeset
192
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diff changeset
193 base.active_sessions = {};
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diff changeset
194
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diff changeset
195 base.statuswin = curses.newwin(#status_lines, 0, 0, 0);
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parents:
diff changeset
196
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diff changeset
197 base.promptwin = curses.newwin(1, 0, #status_lines, 0);
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diff changeset
198 base.promptwin:addstr("");
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diff changeset
199 base.promptwin:refresh();
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parents:
diff changeset
200
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diff changeset
201 base.listwin = curses.newwin(curses.lines()-(#status_lines+2)-5, 0, #status_lines+1, 0);
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parents:
diff changeset
202 base.listwin:syncok();
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diff changeset
203
1072
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diff changeset
204 base.infowin = curses.newwin(5, 0, curses.lines()-5, 0);
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parents:
diff changeset
205 base.infowin:mvaddstr(1, 1, "Hello world");
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parents:
diff changeset
206 base.infowin:border(0,0,0,0);
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parents:
diff changeset
207 base.infowin:syncok();
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parents:
diff changeset
208 base.infowin:refresh();
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parents:
diff changeset
209
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parents:
diff changeset
210 base:resized();
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Florian Zeitz <florob@babelmonkeys.de>
parents: 1084
diff changeset
211
1072
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parents:
diff changeset
212 return base;
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parents:
diff changeset
213 end
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parents:
diff changeset
214
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parents: 1343
diff changeset
215 return { new = new };