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Control-Center/go-backend/internal/config/config.go
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CUB-200: implement WebSocket gateway client with v3 protocol
Replace REST poller with WebSocket client as primary gateway connection:

- wsclient.go: WebSocket client with v3 handshake (connect.challenge →
  connect → hello-ok), frame routing (req/res/event), JSON-RPC Send(),
  auto-reconnect with exponential backoff (1s → 30s max)
- sync.go: Initial sync via agents.list + sessions.list RPCs, merge
  session runtime state into AgentCardData, broadcast fleet.update
- events.go: Real-time event handlers for sessions.changed, presence,
  and agent.config — DB update first, then SSE broadcast
- client.go: REST poller retained as fallback (WS is primary)
- config.go: Add GATEWAY_WS_URL and OPENCLAW_GATEWAY_TOKEN env vars
- main.go: Wire WS client as primary, REST as fallback
- .env.example: Document new WS config vars

Fallback: If WS connection fails, seeded demo data + REST polling
remain available.
2026-05-20 11:33:17 +00:00

63 lines
2.0 KiB
Go

// Package config provides application configuration loaded from environment
// variables with sensible defaults for local development.
package config
import (
"os"
"strconv"
"time"
)
// Config holds all application configuration.
type Config struct {
Port int
DatabaseURL string
CORSOrigin string
LogLevel string
Environment string
GatewayURL string // REST fallback URL
GatewayPollInterval time.Duration // REST fallback poll interval
WSGatewayURL string // WebSocket gateway URL
WSGatewayToken string // WebSocket auth token
}
// Load reads configuration from environment variables, applying defaults where
// values are not set. All secrets come from the environment — nothing is hardcoded.
func Load() *Config {
return &Config{
Port: getEnvInt("PORT", 8080),
DatabaseURL: getEnv("DATABASE_URL", "postgres://controlcenter:controlcenter@localhost:5432/controlcenter?sslmode=disable"),
CORSOrigin: getEnv("CORS_ORIGIN", "*"),
LogLevel: getEnv("LOG_LEVEL", "info"),
Environment: getEnv("ENVIRONMENT", "development"),
GatewayURL: getEnv("GATEWAY_URL", "http://host.docker.internal:18789/api/agents"),
GatewayPollInterval: getEnvDuration("GATEWAY_POLL_INTERVAL", 5*time.Second),
WSGatewayURL: getEnv("GATEWAY_WS_URL", "ws://host.docker.internal:18789/"),
WSGatewayToken: getEnv("OPENCLAW_GATEWAY_TOKEN", ""),
}
}
func getEnv(key, fallback string) string {
if v := os.Getenv(key); v != "" {
return v
}
return fallback
}
func getEnvInt(key string, fallback int) int {
if v := os.Getenv(key); v != "" {
if i, err := strconv.Atoi(v); err == nil {
return i
}
}
return fallback
}
func getEnvDuration(key string, fallback time.Duration) time.Duration {
if v := os.Getenv(key); v != "" {
if d, err := time.ParseDuration(v); err == nil {
return d
}
}
return fallback
}