working Gateway for incoming Mod/Bot ws-conn's; simulated Mod client via sim.go

This commit is contained in:
2025-12-01 19:04:35 +01:00
parent 46aef47e21
commit 925dc319e8
5 changed files with 359 additions and 283 deletions

308
sim.go
View File

@@ -2,15 +2,23 @@ package main
import (
"encoding/json"
"fmt"
"log"
"net/url"
"os"
"os/signal"
"syscall"
"time"
"github.com/gorilla/websocket"
)
type MessageEnvelope struct {
const (
gatewayURL = "ws://localhost:3333/push"
apiKey = "gateway"
serverID = "test-server-001"
)
type Handshake struct {
Type string `json:"type"`
Data json.RawMessage `json:"data"`
}
@@ -19,173 +27,163 @@ type ModHandshake struct {
ServerID string `json:"server_id"`
}
type BotHandshake struct {
BotID string `json:"bot_id"`
type GatewayAck struct {
Status string `json:"status"`
Type string `json:"type"`
}
type User struct {
type MinecraftUser struct {
ID string `json:"id"`
Name string `json:"name"`
}
type ModMessage struct {
type Destination struct {
ChannelID string `json:"channel_id"`
}
type GatewayModMessageIn struct {
MsgID string `json:"msg_id"`
Server string `json:"server"`
User User `json:"user"`
Destination Destination `json:"destination"`
Author MinecraftUser `json:"author"`
Content string `json:"content"`
Meta map[string]interface{} `json:"meta,omitempty"`
Ts string `json:"ts,omitempty"`
}
type BotMessage struct {
MsgID string `json:"msg_id"`
ChannelID string `json:"channel_id"`
Author string `json:"author"`
Content string `json:"content"`
Meta map[string]interface{} `json:"meta,omitempty"`
Ts string `json:"ts,omitempty"`
}
func simulateMod() {
u := url.URL{Scheme: "ws", Host: "localhost:3333", Path: "/ws"}
u.RawQuery = "api_key=gateway"
conn, _, err := websocket.DefaultDialer.Dial(u.String(), nil)
if err != nil {
log.Fatalf("mod dial error: %v", err)
}
defer conn.Close()
fmt.Println("[MOD] Connected")
// Send handshake
handshake := ModHandshake{ServerID: "survival_server"}
hsData, _ := json.Marshal(handshake)
envelope := MessageEnvelope{
Type: "mod",
Data: hsData,
}
envData, _ := json.Marshal(envelope)
if err := conn.WriteMessage(websocket.TextMessage, envData); err != nil {
log.Fatalf("mod handshake write error: %v", err)
}
fmt.Println("[MOD] Sent handshake")
// Read handshake response
_, resp, err := conn.ReadMessage()
if err != nil {
log.Fatalf("mod handshake response error: %v", err)
}
fmt.Printf("[MOD] Handshake response: %s\n", string(resp))
// Send a few messages
for i := 1; i <= 3; i++ {
msg := ModMessage{
MsgID: fmt.Sprintf("mod_msg_%d", i),
Server: "survival_server",
User: User{ID: "player_123", Name: "Steve"},
Content: fmt.Sprintf("Message %d from Minecraft!", i),
Meta: map[string]interface{}{
"coordinates": map[string]int{"x": 100 + i*10, "y": 64, "z": 200},
},
Ts: time.Now().UTC().Format(time.RFC3339),
}
msgData, _ := json.Marshal(msg)
if err := conn.WriteMessage(websocket.TextMessage, msgData); err != nil {
log.Fatalf("mod message write error: %v", err)
}
fmt.Printf("[MOD] Sent message: %s\n", msg.Content)
// Read response
_, resp, err := conn.ReadMessage()
if err != nil {
log.Fatalf("mod response error: %v", err)
}
fmt.Printf("[MOD] Response: %s\n", string(resp))
time.Sleep(1 * time.Second)
}
fmt.Println("[MOD] Closing connection")
}
func simulateBot() {
time.Sleep(2 * time.Second) // Let mod connect first
u := url.URL{Scheme: "ws", Host: "localhost:3333", Path: "/ws"}
u.RawQuery = "api_key=gateway"
conn, _, err := websocket.DefaultDialer.Dial(u.String(), nil)
if err != nil {
log.Fatalf("bot dial error: %v", err)
}
defer conn.Close()
fmt.Println("[BOT] Connected")
// Send handshake
handshake := BotHandshake{BotID: "discord_bot_1"}
hsData, _ := json.Marshal(handshake)
envelope := MessageEnvelope{
Type: "bot",
Data: hsData,
}
envData, _ := json.Marshal(envelope)
if err := conn.WriteMessage(websocket.TextMessage, envData); err != nil {
log.Fatalf("bot handshake write error: %v", err)
}
fmt.Println("[BOT] Sent handshake")
// Read handshake response
_, resp, err := conn.ReadMessage()
if err != nil {
log.Fatalf("bot handshake response error: %v", err)
}
fmt.Printf("[BOT] Handshake response: %s\n", string(resp))
// Send a few messages
for i := 1; i <= 3; i++ {
msg := BotMessage{
MsgID: fmt.Sprintf("bot_msg_%d", i),
ChannelID: "987654321",
Author: "DiscordUser#1234",
Content: fmt.Sprintf("Message %d from Discord!", i),
Meta: map[string]interface{}{
"reactions": []string{"👍", "❤️"},
},
Ts: time.Now().UTC().Format(time.RFC3339),
}
msgData, _ := json.Marshal(msg)
if err := conn.WriteMessage(websocket.TextMessage, msgData); err != nil {
log.Fatalf("bot message write error: %v", err)
}
fmt.Printf("[BOT] Sent message: %s\n", msg.Content)
// Read response
_, resp, err := conn.ReadMessage()
if err != nil {
log.Fatalf("bot response error: %v", err)
}
fmt.Printf("[BOT] Response: %s\n", string(resp))
time.Sleep(1 * time.Second)
}
fmt.Println("[BOT] Closing connection")
}
func main() {
fmt.Println("Starting WebSocket client simulator...")
fmt.Println("Connecting to ws://localhost:3333/ws with api_key=gateway")
interrupt := make(chan os.Signal, 1)
signal.Notify(interrupt, os.Interrupt, syscall.SIGTERM)
go simulateMod()
go simulateBot()
// Build WebSocket URL with API key
u, err := url.Parse(gatewayURL)
if err != nil {
log.Fatalf("Failed to parse URL: %v", err)
}
q := u.Query()
q.Set("api_key", apiKey)
u.RawQuery = q.Encode()
// Let them run
time.Sleep(15 * time.Second)
fmt.Println("Simulator finished")
log.Printf("Connecting to %s", u.String())
// Connect to WebSocket
conn, _, err := websocket.DefaultDialer.Dial(u.String(), nil)
if err != nil {
log.Fatalf("Failed to connect: %v", err)
}
defer conn.Close()
log.Println("Connected to gateway")
// Set up ping handler - respond to pings from server
conn.SetPingHandler(func(appData string) error {
log.Println("Received ping from server, sending pong")
err := conn.WriteControl(websocket.PongMessage, []byte(appData), time.Now().Add(5*time.Second))
if err != nil {
log.Printf("Failed to send pong: %v", err)
return err
}
return nil
})
// Send handshake
modHS := ModHandshake{ServerID: serverID}
modHSData, err := json.Marshal(modHS)
if err != nil {
log.Fatalf("Failed to marshal mod handshake: %v", err)
}
handshake := Handshake{
Type: "mod",
Data: modHSData,
}
if err := conn.WriteJSON(handshake); err != nil {
log.Fatalf("Failed to send handshake: %v", err)
}
log.Println("Handshake sent")
// Read acknowledgment
var ack GatewayAck
if err := conn.ReadJSON(&ack); err != nil {
log.Fatalf("Failed to read acknowledgment: %v", err)
}
log.Printf("Received acknowledgment: status=%s, type=%s", ack.Status, ack.Type)
// Channel for incoming messages
done := make(chan struct{})
// Read loop - handles incoming messages and processes control frames
go func() {
defer close(done)
for {
messageType, message, err := conn.ReadMessage()
if err != nil {
if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway, websocket.CloseNormalClosure) {
log.Printf("WebSocket error: %v", err)
} else {
log.Printf("Connection closed: %v", err)
}
return
}
// Only log text/binary messages (ping/pong handled by handlers)
if messageType == websocket.TextMessage || messageType == websocket.BinaryMessage {
log.Printf("Received from server: %s", string(message))
}
}
}()
// Optional: Send a test message after connecting
time.Sleep(2 * time.Second)
testMsg := GatewayModMessageIn{
MsgID: "test-msg-001",
Server: serverID,
Destination: Destination{
ChannelID: "123456789",
},
Author: MinecraftUser{
ID: "player-uuid-123",
Name: "TestPlayer",
},
Content: "Hello from simulated mod!",
Ts: time.Now().UTC().Format(time.RFC3339),
}
if err := conn.WriteJSON(testMsg); err != nil {
log.Printf("Failed to send test message: %v", err)
} else {
log.Println("Sent test message to gateway")
}
log.Println("Connection established. Responding to pings. Press Ctrl+C to disconnect.")
// Wait for interrupt or connection close
for {
select {
case <-done:
log.Println("Connection closed")
return
case <-interrupt:
log.Println("Interrupt received, closing connection...")
// Send close message
err := conn.WriteMessage(
websocket.CloseMessage,
websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""),
)
if err != nil {
log.Printf("Write close error: %v", err)
return
}
select {
case <-done:
case <-time.After(time.Second):
}
return
}
}
}

View File

@@ -1 +1,107 @@
package ws
import (
"encoding/json"
"net/http"
"time"
"github.com/gorilla/websocket"
)
func (wsg *WebsocketGateway) handlePush(w http.ResponseWriter, r *http.Request) {
conn, err := wsg.validateAndUpgradeConnection(w, r)
if err != nil {
return
}
if wsg.bodySizeBytes > 0 {
conn.SetReadLimit(wsg.bodySizeBytes)
} else {
conn.SetReadLimit(1 << 20) // sensible default 1MiB
}
_ = conn.SetReadDeadline(time.Now().Add(60 * time.Second))
conn.SetPongHandler(func(appData string) error {
_ = conn.SetReadDeadline(time.Now().Add(60 * time.Second))
return nil
})
typ, data, err := conn.ReadMessage()
if err != nil {
wsg.sendWebsocketError(conn, "Internal Server Error", 500)
wsg.logger.Error("Failed to read handshake.", "remote", conn.RemoteAddr().String(), "err", err)
return
}
if typ != websocket.TextMessage && typ != websocket.BinaryMessage {
wsg.sendWebsocketError(conn, "First message must be a handshake.", 400)
wsg.logger.Warn("Invalid handshake message type.", "remote", conn.RemoteAddr().String())
return
}
var handshake Handshake
if err := json.Unmarshal(data, &handshake); err != nil {
wsg.sendWebsocketError(conn, "Malformed handshake.", 400)
wsg.logger.Warn("Malformed handshake.", "remote", conn.RemoteAddr().String(), "err", err)
return
}
meta := connectionMetaData{connectionType: handshake.Type}
switch handshake.Type {
case "mod":
var mhs ModHandshake
if err := json.Unmarshal(handshake.Data, &mhs); err != nil {
wsg.sendWebsocketError(conn, "Malformed mod handshake.", 400)
wsg.logger.Warn("Malformed mod handshake.", "remote", conn.RemoteAddr().String(), "err", err)
return
}
meta.id = mhs.ServerID
if err = wsg.sendWebsocketResponse(conn, GatewayAck{Status: "connected", Type: "mod"}); err != nil {
return
}
wsg.registerConn(conn, meta)
wsg.logger.Info("Mod connected via Websocket.", "remote", conn.RemoteAddr().String(), "server_id", mhs.ServerID)
go wsg.modReadLoop(conn, meta) // replace with external handler mayhaps
case "bot":
var bhs BotHandshake
if err := json.Unmarshal(handshake.Data, &bhs); err != nil {
wsg.sendWebsocketError(conn, "Malformed bot handshake.", 400)
wsg.logger.Warn("Malformed bot handshake.", "remote", conn.RemoteAddr().String(), "err", err)
return
}
meta.id = bhs.BotID
if err = wsg.sendWebsocketResponse(conn, GatewayAck{Status: "connected", Type: "bot"}); err != nil {
return
}
wsg.registerConn(conn, meta)
wsg.logger.Info("Bot connected via Websocket.", "remote", conn.RemoteAddr().String(), "bot_id", bhs.BotID)
go wsg.botReadLoop(conn, meta) // replace with external handler mayhaps
default:
wsg.sendWebsocketError(conn, "Unknown handshake.", 400)
wsg.logger.Warn("Unknown connection type.", "remote", conn.RemoteAddr().String(), "type", handshake.Type)
return
}
}
func (wsg *WebsocketGateway) handleReady(w http.ResponseWriter, r *http.Request) {}
func (wsg *WebsocketGateway) handleHealth(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(200)
_ = json.NewEncoder(w).Encode(map[string]interface{}{"status": "healthy"})
}
func (wsg *WebsocketGateway) handleRegister(w http.ResponseWriter, r *http.Request) {}

70
ws/temp.go Normal file
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@@ -0,0 +1,70 @@
package ws
import (
"context"
"encoding/json"
"log/slog"
"time"
)
type LoggingModHandler struct {
logger *slog.Logger
}
type LoggingBotHandler struct {
logger *slog.Logger
}
func NewLoggingModHandler(logger *slog.Logger) *LoggingModHandler {
return &LoggingModHandler{logger: logger}
}
func NewLoggingBotHandler(logger *slog.Logger) *LoggingBotHandler {
return &LoggingBotHandler{logger: logger}
}
func (h *LoggingModHandler) Handle(ctx context.Context, msg GatewayModMessageIn) error {
// For now, just log and pretend it's being forwarded
// TODO: Look up channel_id from database using server
// TODO: Forward to bot connection(s)
fwd := GatewayModMessageOut{
Type: "mod",
ChannelID: "TODO", // will come from database lookup
Author: msg.Author,
Content: msg.Content,
Meta: msg.Meta,
Ts: msg.Ts,
ReceivedAt: msg.ReceivedAt,
ForwardedAt: time.Now().UTC(),
}
b, _ := json.Marshal(fwd)
h.logger.Info("received mod message", "msg_id", msg.MsgID, "server", msg.Server, "Author", msg.Author.Name, "content", msg.Content)
h.logger.Debug("forwarding mod message", "msg_id", msg.MsgID, "server", msg.Server, "payload", string(b))
return nil
}
func (h *LoggingBotHandler) Handle(ctx context.Context, msg GatewayBotMessageIn) error {
// For now, just log and pretend it's being forwarded
// TODO: Look up server_id from database using channel_id
// TODO: Forward to mod connection(s)
fwd := GatewayBotMessageOut{
Type: "bot",
ChannelID: msg.ChannelID,
Author: msg.Author,
Content: msg.Content,
Meta: msg.Meta,
Ts: msg.Ts,
ReceivedAt: msg.ReceivedAt,
ForwardedAt: time.Now().UTC(),
}
b, _ := json.Marshal(fwd)
h.logger.Info("received bot message", "msg_id", msg.MsgID, "channel", msg.ChannelID, "author", msg.Author, "content", msg.Content)
h.logger.Debug("forwarding bot message", "msg_id", msg.MsgID, "channel", msg.ChannelID, "payload", string(b))
return nil
}

View File

@@ -12,8 +12,8 @@ func (m *GatewayModMessageIn) Validate() error {
if strings.TrimSpace(m.Server) == "" {
return errors.New("server missing")
}
if strings.TrimSpace(m.User.ID) == "" {
return errors.New("user.id missing")
if strings.TrimSpace(m.Author.ID) == "" {
return errors.New("author.id missing")
}
if strings.TrimSpace(m.Content) == "" {
return errors.New("content missing")
@@ -28,7 +28,7 @@ func (m *GatewayBotMessageIn) Validate() error {
if strings.TrimSpace(m.ChannelID) == "" {
return errors.New("channel_id missing")
}
if strings.TrimSpace(m.Author) == "" {
if strings.TrimSpace(m.Author.ID) == "" {
return errors.New("author missing")
}
if strings.TrimSpace(m.Content) == "" {

View File

@@ -69,106 +69,6 @@ func (wsg *WebsocketGateway) Serve(ctx context.Context, listenAddr string) error
//
func (wsg *WebsocketGateway) handlePush(w http.ResponseWriter, r *http.Request) {
conn, err := wsg.validateAndUpgradeConnection(w, r)
if err != nil {
return
}
if wsg.bodySizeBytes > 0 {
conn.SetReadLimit(wsg.bodySizeBytes)
} else {
conn.SetReadLimit(1 << 20) // sensible default 1MiB
}
_ = conn.SetReadDeadline(time.Now().Add(60 * time.Second))
conn.SetPongHandler(func(appData string) error {
_ = conn.SetReadDeadline(time.Now().Add(60 * time.Second))
return nil
})
typ, data, err := conn.ReadMessage()
if err != nil {
wsg.sendWebsocketError(conn, "Internal Server Error", 500)
wsg.logger.Error("Failed to read handshake.", "remote", conn.RemoteAddr().String(), "err", err)
return
}
if typ != websocket.TextMessage && typ != websocket.BinaryMessage {
wsg.sendWebsocketError(conn, "First message must be a handshake.", 400)
wsg.logger.Warn("Invalid handshake message type.", "remote", conn.RemoteAddr().String())
return
}
var handshake Handshake
if err := json.Unmarshal(data, &handshake); err != nil {
wsg.sendWebsocketError(conn, "Malformed handshake.", 400)
wsg.logger.Warn("Malformed handshake.", "remote", conn.RemoteAddr().String(), "err", err)
return
}
meta := connectionMetaData{connectionType: handshake.Type}
switch handshake.Type {
case "mod":
var mhs ModHandshake
if err := json.Unmarshal(handshake.Data, &mhs); err != nil {
wsg.sendWebsocketError(conn, "Malformed mod handshake.", 400)
wsg.logger.Warn("Malformed mod handshake.", "remote", conn.RemoteAddr().String(), "err", err)
return
}
meta.id = mhs.ServerID
if err = wsg.sendWebsocketResponse(conn, GatewayAck{Status: "connected", Type: "mod"}); err != nil {
return
}
wsg.registerConn(conn, meta)
wsg.logger.Info("Mod connected via Websocket.", "remote", conn.RemoteAddr().String(), "server_id", mhs.ServerID)
go wsg.modReadLoop(conn, meta) // replace with external handler mayhaps
case "bot":
var bhs BotHandshake
if err := json.Unmarshal(handshake.Data, &bhs); err != nil {
wsg.sendWebsocketError(conn, "Malformed bot handshake.", 400)
wsg.logger.Warn("Malformed bot handshake.", "remote", conn.RemoteAddr().String(), "err", err)
return
}
meta.id = bhs.BotID
if err = wsg.sendWebsocketResponse(conn, GatewayAck{Status: "connected", Type: "bot"}); err != nil {
return
}
wsg.registerConn(conn, meta)
wsg.logger.Info("Bot connected via Websocket.", "remote", conn.RemoteAddr().String(), "bot_id", bhs.BotID)
go wsg.botReadLoop(conn, meta) // replace with external handler mayhaps
default:
wsg.sendWebsocketError(conn, "Unknown handshake.", 400)
wsg.logger.Warn("Unknown connection type.", "remote", conn.RemoteAddr().String(), "type", handshake.Type)
return
}
}
func (wsg *WebsocketGateway) handleReady(w http.ResponseWriter, r *http.Request) {}
func (wsg *WebsocketGateway) handleHealth(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(200)
_ = json.NewEncoder(w).Encode(map[string]interface{}{"status": "healthy"})
}
func (wsg *WebsocketGateway) handleRegister(w http.ResponseWriter, r *http.Request) {}
//
func (wsg *WebsocketGateway) modReadLoop(c *websocket.Conn, meta connectionMetaData) {
defer func() {
wsg.unregisterConn(c)
@@ -179,6 +79,18 @@ func (wsg *WebsocketGateway) modReadLoop(c *websocket.Conn, meta connectionMetaD
pingTicker := time.NewTicker(30 * time.Second)
defer pingTicker.Stop()
// Send pings in a separate goroutine
go func() {
for range pingTicker.C {
_ = c.SetWriteDeadline(time.Now().Add(5 * time.Second))
if err := c.WriteMessage(websocket.PingMessage, nil); err != nil {
wsg.logger.Debug("write ping failed", "server_id", meta.id, "err", err)
return
}
wsg.logger.Debug("sent ping to mod", "server_id", meta.id)
}
}()
for {
typ, data, err := c.ReadMessage()
if err != nil {
@@ -216,17 +128,6 @@ func (wsg *WebsocketGateway) modReadLoop(c *websocket.Conn, meta connectionMetaD
}
_ = writeJSONSafe(c, map[string]string{"status": "ok"})
// Handle pings
select {
case <-pingTicker.C:
_ = c.SetWriteDeadline(time.Now().Add(5 * time.Second))
if err := c.WriteMessage(websocket.PingMessage, nil); err != nil {
wsg.logger.Debug("write ping failed", "server_id", meta.id, "err", err)
return
}
default:
}
}
}
@@ -240,6 +141,18 @@ func (wsg *WebsocketGateway) botReadLoop(c *websocket.Conn, meta connectionMetaD
pingTicker := time.NewTicker(30 * time.Second)
defer pingTicker.Stop()
// Send pings in a separate goroutine
go func() {
for range pingTicker.C {
_ = c.SetWriteDeadline(time.Now().Add(5 * time.Second))
if err := c.WriteMessage(websocket.PingMessage, nil); err != nil {
wsg.logger.Debug("write ping failed", "bot_id", meta.id, "err", err)
return
}
wsg.logger.Debug("sent ping to bot", "bot_id", meta.id)
}
}()
for {
typ, data, err := c.ReadMessage()
if err != nil {
@@ -277,16 +190,5 @@ func (wsg *WebsocketGateway) botReadLoop(c *websocket.Conn, meta connectionMetaD
}
_ = writeJSONSafe(c, map[string]string{"status": "ok"})
// Handle pings
select {
case <-pingTicker.C:
_ = c.SetWriteDeadline(time.Now().Add(5 * time.Second))
if err := c.WriteMessage(websocket.PingMessage, nil); err != nil {
wsg.logger.Debug("write ping failed", "bot_id", meta.id, "err", err)
return
}
default:
}
}
}