initial commit

2026-01-11 17:07:52 +01:00
commit b9571d55f3
18 changed files with 3572 additions and 0 deletions
@@ -0,0 +1,111 @@
+package main
+
+import (
+	"log"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/metazla/meta-core/internal/api"
+	"github.com/metazla/meta-core/internal/config"
+	"github.com/metazla/meta-core/internal/discovery"
+	"github.com/metazla/meta-core/internal/leader"
+	"github.com/metazla/meta-core/internal/storage"
+)
+
+// Version is set at build time
+var Version = "1.0.0"
+
+func main() {
+	log.SetFlags(log.LstdFlags | log.Lshortfile)
+	log.Printf("[meta-core] Starting version %s", Version)
+
+	// Load configuration
+	cfg := config.Load()
+	log.Printf("[meta-core] Service: %s, HTTP Port: %d", cfg.ServiceName, cfg.HTTPPort)
+
+	// Create storage client
+	storageClient := storage.NewClient("")
+
+	// Create leader election
+	election := leader.NewElection(cfg)
+
+	// Wire up storage connector to election
+	election.SetStorageConnector(&storageConnectorAdapter{client: storageClient})
+
+	// Set up leader/follower callbacks
+	election.OnBecomeLeader(func() {
+		log.Println("[meta-core] Became LEADER - Redis is running")
+	})
+
+	election.OnBecomeFollower(func(info *leader.LeaderLockInfo) {
+		log.Printf("[meta-core] Became FOLLOWER - Leader at %s", info.API)
+	})
+
+	election.OnLeaderLost(func() {
+		log.Println("[meta-core] Lost leadership")
+	})
+
+	// Start leader election
+	if err := election.Start(); err != nil {
+		log.Fatalf("[meta-core] Failed to start leader election: %v", err)
+	}
+
+	// Create and start service discovery
+	disc := discovery.NewService(cfg)
+	if err := disc.Start(); err != nil {
+		log.Fatalf("[meta-core] Failed to start service discovery: %v", err)
+	}
+
+	// Create and start API server
+	apiServer := api.NewServer(cfg, election, disc, storageClient)
+	if err := apiServer.Start(); err != nil {
+		log.Fatalf("[meta-core] Failed to start API server: %v", err)
+	}
+
+	log.Println("[meta-core] Ready and serving requests")
+
+	// Wait for shutdown signal
+	waitForShutdown()
+
+	log.Println("[meta-core] Shutting down...")
+
+	// Graceful shutdown in reverse order
+	if err := apiServer.Stop(); err != nil {
+		log.Printf("[meta-core] Error stopping API server: %v", err)
+	}
+
+	if err := disc.Stop(); err != nil {
+		log.Printf("[meta-core] Error stopping service discovery: %v", err)
+	}
+
+	if err := election.Stop(); err != nil {
+		log.Printf("[meta-core] Error stopping leader election: %v", err)
+	}
+
+	if err := storageClient.Close(); err != nil {
+		log.Printf("[meta-core] Error closing storage client: %v", err)
+	}
+
+	log.Println("[meta-core] Shutdown complete")
+}
+
+// waitForShutdown blocks until a shutdown signal is received
+func waitForShutdown() {
+	sigChan := make(chan os.Signal, 1)
+	signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)
+	<-sigChan
+}
+
+// storageConnectorAdapter adapts storage.Client to leader.StorageConnector
+type storageConnectorAdapter struct {
+	client *storage.Client
+}
+
+func (a *storageConnectorAdapter) Connect(url string) error {
+	return a.client.Connect(url)
+}
+
+func (a *storageConnectorAdapter) Close() error {
+	return a.client.Close()
+}