Switched to redis/postgres, major refactoring

- loginMetadata is passed to shards through redis now
- shards announce they're alive via redis.AnnounceShard() which just
  populates a hashset keyed 'shards'
- login servers grab the 'shards' hashset and randomly picks a shard to
  pass the player to (for now)
- ./service shard && ./service login
- Many new environment variables, check config/config.go for more info.
  or for a tl;dr just read the Dockerfile for the required ones
- Shard and login services now run in different processes ! (and
  containers?? wooaaah)

shard/join.go

@@ -2,6 +2,7 @@ package shard
 
 import (
 	"fmt"
+	"log"
 	"time"
 
 	"github.com/CPunch/gopenfusion/core"
@@ -12,7 +13,7 @@ func (server *ShardServer) RequestEnter(peer *protocol.CNPeer, pkt protocol.Pack
 	var enter protocol.SP_CL2FE_REQ_PC_ENTER
 	pkt.Decode(&enter)
 
-	loginData, err := server.CheckLogin(enter.IEnterSerialKey)
+	loginData, err := server.redisHndlr.GetLogin(enter.IEnterSerialKey)
 	if err != nil {
 		// the error codes for P_FE2CL_REP_PC_ENTER_FAIL aren't referenced in the client :(
 		peer.Send(protocol.P_FE2CL_REP_PC_ENTER_FAIL, protocol.SP_FE2CL_REP_PC_ENTER_FAIL{})
@@ -48,6 +49,7 @@ func (server *ShardServer) RequestEnter(peer *protocol.CNPeer, pkt protocol.Pack
 	peer.FE_key = loginData.FEKey
 	peer.SetActiveKey(protocol.USE_FE)
 
+	log.Printf("Player %d (AccountID %d) entered\n", resp.IID, loginData.PlayerID)
 	return peer.Send(protocol.P_FE2CL_REP_PC_ENTER_SUCC, resp)
 }
 

shard/movement.go

@@ -0,0 +1 @@
+package shard

shard/shardServer.go

@@ -5,19 +5,14 @@ import (
 	"log"
 	"net"
 	"sync"
-	"time"
 
+	"github.com/CPunch/gopenfusion/config"
 	"github.com/CPunch/gopenfusion/core"
 	"github.com/CPunch/gopenfusion/core/db"
 	"github.com/CPunch/gopenfusion/core/protocol"
+	"github.com/CPunch/gopenfusion/core/redis"
 )
 
-type LoginMetadata struct {
-	FEKey     []byte
-	Timestamp time.Time
-	PlayerID  int32
-}
-
 type PacketHandler func(peer *protocol.CNPeer, pkt protocol.Packet) error
 
 func stubbedPacket(_ *protocol.CNPeer, _ protocol.Packet) error { /* stubbed */ return nil }
@@ -26,13 +21,14 @@ type ShardServer struct {
 	listener           net.Listener
 	port               int
 	dbHndlr            *db.DBHandler
+	redisHndlr         *redis.RedisHandler
 	packetHandlers     map[uint32]PacketHandler
 	loginMetadataQueue sync.Map // [int64]*LoginMetadata w/ int64 = serialKey
 	peersLock          sync.Mutex
 	peers              sync.Map // [*protocol.CNPeer]core.Player
 }
 
-func NewShardServer(dbHndlr *db.DBHandler, port int) (*ShardServer, error) {
+func NewShardServer(dbHndlr *db.DBHandler, redisHndlr *redis.RedisHandler, port int) (*ShardServer, error) {
 	listener, err := net.Listen("tcp", fmt.Sprintf(":%d", port))
 	if err != nil {
 		return nil, err
@@ -42,6 +38,7 @@ func NewShardServer(dbHndlr *db.DBHandler, port int) (*ShardServer, error) {
 		listener:       listener,
 		port:           port,
 		dbHndlr:        dbHndlr,
+		redisHndlr:     redisHndlr,
 		packetHandlers: make(map[uint32]PacketHandler),
 	}
 
@@ -50,6 +47,11 @@ func NewShardServer(dbHndlr *db.DBHandler, port int) (*ShardServer, error) {
 		protocol.P_CL2FE_REQ_PC_LOADING_COMPLETE: server.LoadingComplete,
 	}
 
+	redisHndlr.RegisterShard(redis.ShardMetadata{
+		IP:   config.GetAnnounceIP(),
+		Port: port,
+	})
+
 	return server, nil
 }
 
@@ -58,7 +60,7 @@ func (server *ShardServer) RegisterPacketHandler(typeID uint32, hndlr PacketHand
 }
 
 func (server *ShardServer) Start() {
-	log.Printf("Server hosted on 127.0.0.1:%d\n", server.port)
+	log.Printf("Shard service hosted on %s:%d\n", config.GetAnnounceIP(), server.port)
 
 	for {
 		conn, err := server.listener.Accept()
@@ -151,21 +153,3 @@ func (server *ShardServer) RangePeers(f func(peer *protocol.CNPeer, player *core
 		return f(peer, player)
 	})
 }
-
-func (server *ShardServer) QueueLogin(serialKey int64, meta *LoginMetadata) {
-	server.loginMetadataQueue.Store(serialKey, meta)
-}
-
-func (server *ShardServer) CheckLogin(serialKey int64) (*LoginMetadata, error) {
-	value, ok := server.loginMetadataQueue.Load(serialKey)
-	if !ok {
-		return nil, fmt.Errorf("serialKey %x is not valid!", serialKey)
-	}
-
-	meta, ok := value.(*LoginMetadata)
-	if !ok { // should never happen
-		panic(fmt.Errorf("ShardServer.loginMetadataQueue has an invalid value: loginMetadataQueue[%x] = %#v", serialKey, value))
-	}
-
-	return meta, nil
-}