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annotate Comm.lua @ 93:df94161e6d7c

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Working incremental updates
author John@Yosemite-PC
date Sun, 22 Apr 2012 17:12:39 -0400
parents a227f3b61cda
children 2058d86778b4
rev   line source
John@72 1 local bsk=bsk
John@72 2 local _G=_G
John@72 3 local table=table
John@72 4 local pairs=pairs
John@72 5 local setmetatable=setmetatable
John@72 6 local ipairs=ipairs
John@72 7 local unpack=unpack
John@72 8 local string=string
John@72 9 local sformat=string.format
John@72 10 local tostring=tostring
John@72 11 local type=type
John@72 12 local getn=getn
John@72 13
John@72 14 local commlib = LibStub("AceComm-3.0") or _G.error("Couldn't load up AceComm")
John@72 15 local s = LibStub("AceSerializer-3.0") or _G.error("Couldn't load up AceSerializer")
John@72 16
John@72 17 setfenv(1,bsk)
John@72 18
John@72 19 local function BuildPacket(handler,message)
John@72 20 local p = {handler,message}
John@72 21 local str = s:Serialize({handler,message})
John@72 22 print("sending",str)
John@72 23 return p,str
John@72 24 end
John@72 25
John@72 26 local function SendMessage(str)
John@72 27 --commlib:SendCommMessage("BSKADDON",str,"GUILD")
John@86 28 commlib:SendCommMessage("BSKADDON"..commversion,str,"RAID")
John@72 29 end
John@72 30
John@72 31 local function Send(handler,message)
John@72 32 local p,str = BuildPacket(handler,message)
John@72 33 SendMessage(str)
John@72 34 end
John@72 35
John@72 36 -- todo: ActivateList and AddReserve -> state
John@72 37 Comm =
John@72 38 {
John@72 39 ["SS"] = function(self,packet,sender,isloop)
John@72 40 print("isloop",isloop)
John@72 41 if not isloop then DispatchState(packet) end
John@72 42 end,
John@72 43 ["SendStateChange"] = function(self,...)
John@72 44 local p,str = BuildPacket("SS",{...})
John@72 45 DispatchState(p[2])
John@72 46 SendMessage(str)
John@72 47 end,
John@72 48 ["AR"] = function(self,packet,sender,isloop)
John@72 49 if isloop then return end
John@72 50 PersonList:AddReserve(packet)
John@72 51 changeListener:DataEvent()
John@72 52 end,
John@72 53 ["AddReserve"] = function(self,packet)
John@72 54 if changeListener then
John@72 55 changeListener:DataEvent(change)
John@72 56 end
John@72 57 Send("AR",packet)
John@72 58 end,
John@72 59 ["SendChange"] = function(self,change)
John@72 60 if changeListener then
John@72 61 changeListener:DataEvent(change)
John@72 62 end
John@72 63 Send("CC",change)
John@72 64 end,
John@72 65 ["CC"] = function(self,change,sender,isloop)
John@72 66 if isloop then return end
John@91 67 table.insert(db.profile.changes,change)
John@72 68 ProcessChange(change)
John@72 69 changeListener:DataEvent()
John@72 70 end,
John@72 71 ["Push"] = function(self)
John@91 72 Send("PU",{db.profile.lists,db.profile.persons,db.profile.changes,db.profile.time})
John@72 73 end,
John@72 74 ["PU"] = function(self,packet,sender,isloop)
John@72 75 if isloop then return end
John@91 76 db.profile.lists,db.profile.persons,db.profile.changes,db.profile.time = unpack(packet)
John@72 77 CreateWorkingStateFromChanges(db.profile.changes)
John@72 78 if changeListener then
John@72 79 changeListener:DataEvent()
John@72 80 end
John@72 81 end,
John@91 82
John@91 83 ["TS"] = function(self,packet,sender,isloop)
John@91 84 if isloop then return end
John@91 85 if masterLooterIsMe and admin then
John@91 86 -- only non-admins will send this message, send them the present
John@91 87 -- working state
John@91 88 -- todo: if they send a timestamp that's somewhere along our
John@91 89 -- timeline, then just catch them up
John@92 90 --local dbPersons = {toons=PersonList.toons,time=PersonList.time}
John@92 91 --Send("CU",{dbPersons,LootLists.l,timestamp}) -- todo: send privately
John@92 92
John@92 93 local t = packet
John@92 94 local remoteBase = table.remove(t,1)
John@92 95
John@92 96 -- if their base is older than ours, this is easy - send them our
John@92 97 -- base and all the changes
John@92 98 -- if their base is equal to ours, then diff their changes vs ours
John@92 99 -- and send them the remainder - it's ok if they have changes we
John@92 100 -- don't
John@92 101 -- if their base is newer, then we have a problem - it means another
John@92 102 -- admin rebased and we aren't aware of that. but the other admin
John@92 103 -- wouldn't have done that if they didn't believe all the admins
John@92 104 -- were synced up to the release point. So do we trust that and use
John@92 105 -- this as a rebase opportunity? print an error? just reply that we
John@92 106 -- don't have anything new to share with them? only send them
John@92 107 --
John@92 108
John@92 109 if remoteBase == db.profile.time then
John@92 110 local j = 1 -- index in foreign list
John@92 111 local n = getn(t)
John@92 112 local o = {}
John@92 113 for i,v in pairs(db.profile.changes) do -- for each timestamp in our list
John@92 114 if t and t[j] < v.time then
John@92 115 table.insert(o,v)
John@92 116 end
John@92 117 while j<n and t[j] <= v.time do j = j+1 end -- advance the foreign pointer past our current entry
John@92 118 end -- j>=n ? add because the remote hit end of road. lt? add because it's a missing stamp
John@92 119 print("Received request at timebase",remoteBase,"and returning:")
John@92 120 PrintTable(o)
John@93 121 if getn(o) > 0 then
John@93 122 Send("CU",o) -- todo: send privately to the requster
John@93 123 end
John@92 124 else
John@93 125 print("Received request at differing timebase",remoteBase,db.profile.time," ... pushing")
John@93 126 self:Push() -- todo: send privately to requester
John@92 127 end
John@91 128 end
John@91 129 end,
John@91 130
John@91 131 ["CU"] = function(self,packet,sender,isloop) -- blindly trust an admin loot master
John@91 132 if isloop then return end
John@93 133
John@93 134 local c = packet
John@93 135 local old = db.profile.changes
John@93 136
John@93 137 local new = {}
John@93 138
John@93 139 local op = 1
John@93 140 local cp = 1
John@93 141
John@93 142 local no = getn(old)
John@93 143 local nc = getn(c)
John@93 144
John@93 145 if no == 0 then
John@93 146 db.profile.changes = c
John@93 147 else
John@93 148 while op <= no and cp <= nc do
John@93 149 if c[cp].time == old[op].time then
John@93 150 error("Bad update received from ",sender)
John@93 151 end
John@93 152 if c[cp].time < old[op].time then
John@93 153 table.insert(new,c[cp])
John@93 154 cp = cp + 1
John@93 155 else
John@93 156 table.inert(new,old[cp])
John@93 157 op = op + 1
John@93 158 end
John@93 159 end
John@93 160 db.profile.changes = new
John@93 161 end
John@93 162
John@91 163 CreateWorkingStateFromChanges(db.profile.changes)
John@91 164 if changeListener then
John@91 165 changeListener:DataEvent()
John@91 166 end
John@91 167 end,
John@91 168
John@91 169 ["RequestCatchup"] = function(self)
John@91 170 if not admin then
John@92 171 --local string = _g.tostring(timestamp)
John@92 172 --for i,v in pairs(db.profile.changes) do -- append all change timestamps
John@92 173 -- string = string .. "|" .. _g.tostring(v.time)
John@92 174 --end
John@92 175 local t = {db.profile.time}
John@92 176 for i,v in pairs(db.profile.changes) do -- append all change timestamps
John@92 177 table.insert(t,v.time)
John@92 178 end
John@92 179 Send("TS", t) -- todo: send privately to loot master
John@91 180 else
John@91 181 -- todo: admins talking to one another
John@91 182 end
John@91 183
John@91 184 end,
John@72 185 }
John@72 186
John@72 187 local function OnCommReceived(prefix, message, distribution, sender)
John@72 188 print("Received on", distribution)
John@72 189 local success,packet = s:Deserialize(message)
John@72 190 local isloop = _G.UnitName("player") == sender
John@72 191
John@72 192 print("received",message)
John@72 193
John@72 194 Comm[packet[1]](Comm,packet[2],sender,isloop)
John@72 195 end
John@72 196
John@86 197 alertlist = {}
John@86 198 local function OnOlderCommReceived(prefix, message, distribution, sender)
John@86 199 if not alertlist[sender] then
John@86 200 printf("Received communication from %s, who is using an older version of the addon; ignoring",sender)
John@86 201 alertlist[sender]=true
John@86 202 end
John@86 203 end
John@86 204
John@86 205 local function OnNewerCommReceived(prefix, message, distribution, sender)
John@86 206 if not alertlist[sender] then
John@86 207 printf("Received communication from %s, who is using a newer version of the addon; ignoring",sender)
John@86 208 alertlist[sender]=true
John@86 209 end
John@86 210 end
John@86 211
John@72 212 function InitializeComm()
John@86 213 for i = 0,commversion-1 do
John@86 214 commlib:RegisterComm("BSKADDON"..i,OnOlderCommReceived)
John@86 215 end
John@86 216 commlib:RegisterComm("BSKADDON"..commversion,OnCommReceived)
John@86 217 for i = commversion+1,commversion+5 do -- some sensible number
John@86 218 commlib:RegisterComm("BSKADDON"..i,OnNewerCommReceived)
John@86 219 end
John@72 220 end
John@72 221
John@72 222 function DeinitializeComm()
John@72 223
John@72 224 end