mod_http_muc_log/mod_http_muc_log.lua
author Kim Alvefur <zash@zash.se>
Sat, 08 Nov 2014 15:54:49 +0100
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child 1552 81b3599c02fb
permissions -rw-r--r--
mod_http_muc_log: Strip some whitespace
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local st = require "util.stanza";
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local datetime = require"util.datetime";
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local jid_split = require"util.jid".split;
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local nodeprep = require"util.encodings".stringprep.nodeprep;
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local uuid = require"util.uuid".generate;
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local it = require"util.iterators";
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local gettime = require"socket".gettime;
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local archive = module:open_store("archive2", "archive");
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-- Support both old and new MUC code
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local mod_muc = module:depends"muc";
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local rooms = rawget(mod_muc, "rooms");
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local each_room = rawget(mod_muc, "each_room") or function() return it.values(rooms); end;
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if not rooms then
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	rooms = module:shared"muc/rooms";
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end
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local get_room_from_jid = rawget(mod_muc, "get_room_from_jid") or
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	function (jid)
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		return rooms[jid];
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	end
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local function get_room(name)
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	local jid = name .. '@' .. module.host;
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	return get_room_from_jid(jid);
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end
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module:depends"http";
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local function template(data)
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	local _doc = [[
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	Like util.template, but deals with plain text
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	Returns a closure that is called with a table of values
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	{name} is substituted for values["name"] and is XML escaped
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	{name!} is substituted without XML escaping
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	{name?} is optional and is replaced with an empty string if no value exists
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	]]
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	return function(values)
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		return (data:gsub("{([^!}]-)(%p?)}", function (name, opt)
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			local value = values[name];
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			if value then
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				if opt ~= "!" then
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					return st.xml_escape(value);
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				end
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				return value;
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			elseif opt == "?" then
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				return "";
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			end
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		end));
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	end
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end
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local base = template[[
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<!DOCTYPE html>
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<meta charset="utf-8">
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<title>{title}</title>
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<style>
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body { margin: 1ex 1em; }
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ul { padding: 0; }
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li.action dt, li.action dd { display: inline-block; margin-left: 0;}
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li.action dd { margin-left: 1ex;}
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li { list-style: none; }
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li:hover { background: #eee; }
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li time { float: right; font-size: small; opacity: 0.2; }
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li:hover time { opacity: 1; }
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li.join , li.leave { color: green; }
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li.join dt, li.leave dt { color: green; }
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nav { font-size: x-large; margin: 1ex 2em; }
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nav a { text-decoration: none; }
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</style>
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<h1>{title}</h1>
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{body!}
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]]
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local dates_template = template(base{
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	title = "Logs for room {room}";
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	body = [[
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<base href="{room}/">
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<nav>
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<a href="..">↑</a>
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</nav>
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<ul>
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{lines!}</ul>
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]];
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})
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local date_line_template = template[[
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<li><a href="{date}">{date}</a></li>
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]];
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local page_template = template(base{
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	title = "Logs for room {room} on {date}";
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	body = [[
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<nav>
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<a class="prev" href="{prev}">←</a>
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<a class="up" href="../{room}">↑</a>
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<a class="next" href="{next}">→</a>
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</nav>
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<ul>
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{logs!}
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</ul>
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]];
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});
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local line_templates = {
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	["message<groupchat"] = template[[
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<li id="{key}" class="{st_name}"><a href="#{key}"><time>{time}</time></a><dl><dt>{nick}</dt><dd>{body}</dd></dl></li>
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]];
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	["message<groupchat<subject"] = template[[
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<li id="{key}" class="{st_name} action subject"><a href="#{key}"><time>{time}</time></a><dl><dt>{nick}</dt><dd>changed subject to {subject}</dd></dl></li>
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]];
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	["presence"] = template[[
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<li id="{key}" class="action join"><a href="#{key}"><time>{time}</time></a><dl><dt>{nick}</dt><dd>joined</dd></dl></li>
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]];
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	["presence<unavailable"] = template[[
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<li id="{key}" class="action leave"><a href="#{key}"><time>{time}</time></a><dl><dt>{nick}</dt><dd>left</dd></dl></li>
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]];
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};
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local room_list_template = template(base{
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	title = "Rooms on {host}";
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	body = [[
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<dl>
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{rooms!}
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   125
</dl>
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]];
1549
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});
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   128
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local room_item_template = template[[
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<dt><a href="{room}">{name}</a></dt>
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<dd>{description?}</dd>
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]];
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   133
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local function public_room(room)
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	if type(room) == "string" then
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		room = get_room(room);
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   137
	end
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	return room and not room:get_hidden() and not room:get_members_only() and room._data.logging ~= false;
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end
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   140
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-- FIXME Invent some more efficient API for this
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local function dates_page(event, room)
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	local request, response = event.request, event.response;
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	room = nodeprep(room);
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	if not room or not public_room(room) then return end
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   147
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	local dates, i = {}, 1;
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	module:log("debug", "Find all dates with messages");
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   150
	local next_day;
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	repeat
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		local iter = archive:find(room, {
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			["start"] = next_day;
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			limit = 1;
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   155
		})
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		if not iter then break end
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		next_day = nil;
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   158
		for key, message, when in iter do
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   159
			next_day = datetime.date(when);
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			dates[i], i = date_line_template{
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   161
				date = next_day;
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Kim Alvefur <zash@zash.se>
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   162
			}, i + 1;
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   163
			next_day = datetime.parse(next_day .. "T23:59:59Z") + 1;
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   164
			break;
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   165
		end
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Kim Alvefur <zash@zash.se>
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   166
	until not next_day;
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parents:
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   167
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   168
	return dates_template{
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   169
		room = room;
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   170
		lines = table.concat(dates);
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   171
	};
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   172
end
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   173
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   174
local function logs_page(event, path)
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   175
	local request, response = event.request, event.response;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
   176
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Kim Alvefur <zash@zash.se>
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   177
	local room, date = path:match("^(.-)/(%d%d%d%d%-%d%d%-%d%d)$");
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   178
	room = nodeprep(room);
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
   179
	if not room then
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Kim Alvefur <zash@zash.se>
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diff changeset
   180
		return dates_page(event, path);
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diff changeset
   181
	end
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Kim Alvefur <zash@zash.se>
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diff changeset
   182
	if not public_room(room) then return end
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
   183
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   184
	local logs, i = {}, 1;
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   185
	local iter, err = archive:find(room, {
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
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diff changeset
   186
		["start"] = datetime.parse(date.."T00:00:00Z");
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Kim Alvefur <zash@zash.se>
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diff changeset
   187
		["end"]   = datetime.parse(date.."T23:59:59Z");
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Kim Alvefur <zash@zash.se>
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diff changeset
   188
		limit = math.huge;
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
   189
		-- with = "message<groupchat";
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   190
	});
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   191
	if not iter then return 500; end
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
   192
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   193
	local templ, typ;
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   194
	for key, message, when in iter do
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   195
		templ = message.name;
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   196
		local typ = message.attr.type;
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   197
		if typ then templ = templ .. '<' .. typ; end
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   198
		local subject = message:get_child_text("subject");
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   199
		if subject then templ = templ .. '<subject'; end
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   200
		templ = line_templates[templ];
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   201
		if templ then
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   202
			logs[i], i = templ { 
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   203
				key = key;
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   204
				time = datetime.time(when);
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   205
				nick = select(3, jid_split(message.attr.from));
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   206
				body = message:get_child_text("body");
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   207
				subject = subject;
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   208
				st_name = message.name;
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   209
				st_type = message.attr.type;
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   210
			}, i + 1;
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   211
		else
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   212
			module:log("debug", "No template for %s", tostring(message));
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   213
		end
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   214
	end
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   215
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   216
	local next_when = datetime.parse(date.."T12:00:00Z") + 86400;
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   217
	local prev_when = datetime.parse(date.."T12:00:00Z") - 86400;
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   218
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   219
	module:log("debug", "Find next date with messages");
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   220
	for key, message, when in archive:find(room, {
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   221
		["start"] = datetime.parse(date.."T00:00:00Z") + 86401;
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   222
		limit = math.huge;
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   223
	}) do
1550
1b2823b41f7f mod_http_muc_log: Strip some whitespace
Kim Alvefur <zash@zash.se>
parents: 1549
diff changeset
   224
		next_when = when;
1b2823b41f7f mod_http_muc_log: Strip some whitespace
Kim Alvefur <zash@zash.se>
parents: 1549
diff changeset
   225
		module:log("debug", "Next message: %s", datetime.datetime(when));
1b2823b41f7f mod_http_muc_log: Strip some whitespace
Kim Alvefur <zash@zash.se>
parents: 1549
diff changeset
   226
		break;
1b2823b41f7f mod_http_muc_log: Strip some whitespace
Kim Alvefur <zash@zash.se>
parents: 1549
diff changeset
   227
	end
1549
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   228
1550
1b2823b41f7f mod_http_muc_log: Strip some whitespace
Kim Alvefur <zash@zash.se>
parents: 1549
diff changeset
   229
	module:log("debug", "Find prev date with messages");
1b2823b41f7f mod_http_muc_log: Strip some whitespace
Kim Alvefur <zash@zash.se>
parents: 1549
diff changeset
   230
	for key, message, when in archive:find(room, {
1b2823b41f7f mod_http_muc_log: Strip some whitespace
Kim Alvefur <zash@zash.se>
parents: 1549
diff changeset
   231
		["end"] = datetime.parse(date.."T00:00:00Z") - 1;
1b2823b41f7f mod_http_muc_log: Strip some whitespace
Kim Alvefur <zash@zash.se>
parents: 1549
diff changeset
   232
		limit = math.huge;
1b2823b41f7f mod_http_muc_log: Strip some whitespace
Kim Alvefur <zash@zash.se>
parents: 1549
diff changeset
   233
		reverse = true;
1b2823b41f7f mod_http_muc_log: Strip some whitespace
Kim Alvefur <zash@zash.se>
parents: 1549
diff changeset
   234
	}) do
1b2823b41f7f mod_http_muc_log: Strip some whitespace
Kim Alvefur <zash@zash.se>
parents: 1549
diff changeset
   235
		prev_when = when;
1b2823b41f7f mod_http_muc_log: Strip some whitespace
Kim Alvefur <zash@zash.se>
parents: 1549
diff changeset
   236
		module:log("debug", "Previous message: %s", datetime.datetime(when));
1b2823b41f7f mod_http_muc_log: Strip some whitespace
Kim Alvefur <zash@zash.se>
parents: 1549
diff changeset
   237
		break;
1549
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   238
	end
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   239
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   240
	return page_template{
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   241
		room = room;
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   242
		date = date;
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   243
		logs = table.concat(logs);
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   244
		next = datetime.date(next_when);
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   245
		prev = datetime.date(prev_when);
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   246
	};
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   247
end
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   248
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   249
local function list_rooms(event)
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
diff changeset
   250
	local room_list, i = {}, 1;
f9f8bf82ece7 mod_http_muc_log: MUC log module using new archive API
Kim Alvefur <zash@zash.se>
parents:
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	for room in each_room() do
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		if public_room(room) then
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			room_list[i], i = room_item_template {
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				room = jid_split(room.jid);
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				name = room:get_name();
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				description = room:get_description();
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				subject = room:get_subject();
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			}, i + 1;
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		end
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	end
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	return room_list_template {
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		host = module.host;
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		rooms = table.concat(room_list);
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	};
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end
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local cache = setmetatable({}, {__mode = 'v'});
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local function with_cache(f)
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	return function (event, path)
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		local request, response = event.request, event.response;
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		local ckey = path or "";
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		local cached = cache[ckey];
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		if cached then
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			local etag = cached.etag;
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			local if_none_match = request.headers.if_none_match;
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			if etag == if_none_match then
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				module:log("debug", "Client cache hit");
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				return 304;
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			end
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			module:log("debug", "Server cache hit");
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			response.headers.etag = etag;
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			return cached[1];
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		end
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		local start = gettime();
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		local render = f(event, path);
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		module:log("debug", "Rendering took %dms", math.floor( (gettime() - start) * 1000 + 0.5));
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parents:
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parents:
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   291
		if type(render) == "string" then
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parents:
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   292
			local etag = uuid();
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Kim Alvefur <zash@zash.se>
parents:
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   293
			cached = { render, etag = etag, date = datetime.date() };
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Kim Alvefur <zash@zash.se>
parents:
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   294
			response.headers.etag = etag;
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parents:
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   295
			cache[ckey] = cached;
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   296
		end
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parents:
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   297
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   298
		return render;
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   299
	end
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end
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parents:
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   301
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   302
-- How is cache invalidation a hard problem? ;)
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parents:
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   303
module:hook("muc-broadcast-message", function (event)
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Kim Alvefur <zash@zash.se>
parents:
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   304
	local room = event.room;
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parents:
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   305
	local room_name = jid_split(room.jid);
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Kim Alvefur <zash@zash.se>
parents:
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   306
	local today = datetime.date();
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Kim Alvefur <zash@zash.se>
parents:
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   307
	cache[ room_name .. "/" .. today ] = nil;
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parents:
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   308
	if cache[room_name] and cache[room_name].date ~= today then
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Kim Alvefur <zash@zash.se>
parents:
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   309
		cache[room_name] = nil;
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parents:
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   310
	end
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parents:
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   311
end);
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parents:
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   312
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   313
module:log("info", module:http_url());
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parents:
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   314
module:provides("http", {
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parents:
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   315
	route = {
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   316
		["GET /"] = list_rooms;
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parents:
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   317
		["GET /*"] = with_cache(logs_page);
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parents:
diff changeset
   318
	};
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parents:
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   319
});
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Kim Alvefur <zash@zash.se>
parents:
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   320