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annotate Comm.lua @ 92:a227f3b61cda

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Starting to integrate differential updating
author John@Yosemite-PC
date Sun, 22 Apr 2012 00:03:13 -0400
parents 5ade79caeece
children df94161e6d7c
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@92 121 else
John@92 122 print("Received request at differing timebase",remoteBase,db.profile.time)
John@92 123 end
John@91 124 end
John@91 125 end,
John@91 126
John@91 127 ["CU"] = function(self,packet,sender,isloop) -- blindly trust an admin loot master
John@91 128 if isloop then return end
John@91 129 print("CU")
John@91 130 db.profile.persons,db.profile.lists,db.profile.time = unpack(packet)
John@91 131 db.profile.changes = {}
John@91 132 CreateWorkingStateFromChanges(db.profile.changes)
John@91 133 if changeListener then
John@91 134 changeListener:DataEvent()
John@91 135 end
John@91 136 end,
John@91 137
John@91 138 ["RequestCatchup"] = function(self)
John@91 139 if not admin then
John@92 140 --local string = _g.tostring(timestamp)
John@92 141 --for i,v in pairs(db.profile.changes) do -- append all change timestamps
John@92 142 -- string = string .. "|" .. _g.tostring(v.time)
John@92 143 --end
John@92 144 local t = {db.profile.time}
John@92 145 for i,v in pairs(db.profile.changes) do -- append all change timestamps
John@92 146 table.insert(t,v.time)
John@92 147 end
John@92 148 Send("TS", t) -- todo: send privately to loot master
John@91 149 else
John@91 150 -- todo: admins talking to one another
John@91 151 end
John@91 152
John@91 153 end,
John@72 154 }
John@72 155
John@72 156 local function OnCommReceived(prefix, message, distribution, sender)
John@72 157 print("Received on", distribution)
John@72 158 local success,packet = s:Deserialize(message)
John@72 159 local isloop = _G.UnitName("player") == sender
John@72 160
John@72 161 print("received",message)
John@72 162
John@72 163 Comm[packet[1]](Comm,packet[2],sender,isloop)
John@72 164 end
John@72 165
John@86 166 alertlist = {}
John@86 167 local function OnOlderCommReceived(prefix, message, distribution, sender)
John@86 168 if not alertlist[sender] then
John@86 169 printf("Received communication from %s, who is using an older version of the addon; ignoring",sender)
John@86 170 alertlist[sender]=true
John@86 171 end
John@86 172 end
John@86 173
John@86 174 local function OnNewerCommReceived(prefix, message, distribution, sender)
John@86 175 if not alertlist[sender] then
John@86 176 printf("Received communication from %s, who is using a newer version of the addon; ignoring",sender)
John@86 177 alertlist[sender]=true
John@86 178 end
John@86 179 end
John@86 180
John@72 181 function InitializeComm()
John@86 182 for i = 0,commversion-1 do
John@86 183 commlib:RegisterComm("BSKADDON"..i,OnOlderCommReceived)
John@86 184 end
John@86 185 commlib:RegisterComm("BSKADDON"..commversion,OnCommReceived)
John@86 186 for i = commversion+1,commversion+5 do -- some sensible number
John@86 187 commlib:RegisterComm("BSKADDON"..i,OnNewerCommReceived)
John@86 188 end
John@72 189 end
John@72 190
John@72 191 function DeinitializeComm()
John@72 192
John@72 193 end