feat: build vehicle data platform and production pipeline

vehicle-data-platform/apps/api/cmd/alert-evaluator/main.go

@@ -0,0 +1,52 @@
+package main
+
+import (
+	"context"
+	"log"
+	"os/signal"
+	"syscall"
+	"time"
+
+	_ "github.com/go-sql-driver/mysql"
+
+	"lingniu/vehicle-data-platform/apps/api/internal/config"
+	"lingniu/vehicle-data-platform/apps/api/internal/platform"
+)
+
+func main() {
+	cfg := config.Load()
+	if cfg.MySQLDSN == "" {
+		log.Fatal("MYSQL_DSN is required")
+	}
+	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
+	defer stop()
+	db, err := platform.OpenSQL(ctx, "mysql", cfg.MySQLDSN)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer db.Close()
+	store := platform.NewProductionStore(db, nil, "").WithAlertStreamConfig(cfg.AlertStreamMode, cfg.AlertStreamKafkaGroup)
+	service := platform.NewService(store)
+	interval := cfg.AlertEvaluationInterval
+	if interval < time.Second {
+		interval = time.Second
+	}
+	ticker := time.NewTicker(interval)
+	defer ticker.Stop()
+	log.Printf("alert evaluator started interval=%s stream_mode=%s", interval, cfg.AlertStreamMode)
+	for {
+		started := time.Now()
+		result, err := service.EvaluateAlerts(ctx)
+		if err != nil {
+			log.Printf("alert evaluation failed duration=%s error=%v", time.Since(started), err)
+		} else {
+			log.Printf("alert evaluation completed rules=%d vehicles=%d candidates_advanced=%d duplicate_observations=%d late_observations=%d stale_evidence_skipped=%d opened=%d recovered=%d duration=%s", result.RulesEvaluated, result.VehiclesScanned, result.CandidatesAdvanced, result.DuplicateObservations, result.LateObservations, result.StaleEvidenceSkipped, result.Opened, result.Recovered, time.Since(started))
+		}
+		select {
+		case <-ctx.Done():
+			log.Printf("alert evaluator stopped")
+			return
+		case <-ticker.C:
+		}
+	}
+}