mod_pubsub_feeds: Track latest timestamp seen in feeds instead of last poll
This should ensure that an entry that has a publish timestmap after the
previously oldest post, but before the time of the last poll check, is
published to the node.
Previously if an entry would be skipped if it was published at 13:00
with a timestamp of 12:30, where the last poll was at 12:45.
For feeds that lack a timestamp, it now looks for the first post that is
not published, assuming that the feed is in reverse chronological order,
then iterates back up from there.
-- vim:sts=4 sw=4
-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
-- Copyright (C) 2012 Rob Hoelz
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
----------------------------------------
-- Constants and such --
----------------------------------------
local setmetatable = setmetatable;
local ldap = module:require 'ldap';
local vcardlib = module:require 'ldap/vcard';
local st = require 'util.stanza';
local gettime = require 'socket'.gettime;
if not ldap then
return;
end
local CACHE_EXPIRY = 300;
local params = module:get_option('ldap');
----------------------------------------
-- Utility Functions --
----------------------------------------
local function ldap_record_to_vcard(record)
return vcardlib.create {
record = record,
format = params.vcard_format,
}
end
local get_alias_for_user;
do
local user_cache;
local last_fetch_time;
local function populate_user_cache()
local ld = ldap.getconnection();
local usernamefield = params.user.usernamefield;
local namefield = params.user.namefield;
user_cache = {};
for _, attrs in ld:search { base = params.user.basedn, scope = 'onelevel', filter = params.user.filter } do
user_cache[attrs[usernamefield]] = attrs[namefield];
end
last_fetch_time = gettime();
end
function get_alias_for_user(user)
if last_fetch_time and last_fetch_time + CACHE_EXPIRY < gettime() then
user_cache = nil;
end
if not user_cache then
populate_user_cache();
end
return user_cache[user];
end
end
----------------------------------------
-- General Setup --
----------------------------------------
local ldap_store = {};
ldap_store.__index = ldap_store;
local adapters = {
roster = {},
vcard = {},
}
for k, v in pairs(adapters) do
setmetatable(v, ldap_store);
v.__index = v;
v.name = k;
end
function ldap_store:get(username)
return nil, "get method unimplemented on store '" .. tostring(self.name) .. "'"
end
function ldap_store:set(username, data)
return nil, "LDAP storage is currently read-only";
end
----------------------------------------
-- Roster Storage Implementation --
----------------------------------------
function adapters.roster:get(username)
local ld = ldap.getconnection();
local contacts = {};
local memberfield = params.groups.memberfield;
local namefield = params.groups.namefield;
local filter = memberfield .. '=' .. tostring(username);
local groups = {};
for _, config in ipairs(params.groups) do
groups[ config[namefield] ] = config.name;
end
-- XXX this kind of relies on the way we do groups at INOC
for _, attrs in ld:search { base = params.groups.basedn, scope = 'onelevel', filter = filter } do
if groups[ attrs[namefield] ] then
local members = attrs[memberfield];
for _, user in ipairs(members) do
if user ~= username then
local jid = user .. '@' .. module.host;
local record = contacts[jid];
if not record then
record = {
subscription = 'both',
groups = {},
name = get_alias_for_user(user),
};
contacts[jid] = record;
end
record.groups[ groups[ attrs[namefield] ] ] = true;
end
end
end
end
return contacts;
end
----------------------------------------
-- vCard Storage Implementation --
----------------------------------------
function adapters.vcard:get(username)
if not params.vcard_format then
return nil, '';
end
local ld = ldap.getconnection();
local filter = params.user.usernamefield .. '=' .. tostring(username);
local match = ldap.singlematch {
base = params.user.basedn,
filter = filter,
};
if match then
match.jid = username .. '@' .. module.host
return st.preserialize(ldap_record_to_vcard(match));
else
return nil, 'not found';
end
end
----------------------------------------
-- Driver Definition --
----------------------------------------
local driver = {};
function driver:open(store, typ)
local adapter = adapters[store];
if adapter and typ == nil or typ == "keyval" then
return adapter;
end
return nil, "unsupported-store";
end
module:provides("storage", driver);