Add filter, add READMES

backend_go/main.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+	"context"
+	"log"
+	"net/http"
+	"time"
+)
+
+func main() {
+	cfg, err := LoadConfig()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	sparql := NewAnzoGraphClient(cfg)
+	if err := sparql.Startup(context.Background()); err != nil {
+		log.Fatal(err)
+	}
+
+	api := &APIServer{
+		cfg:       cfg,
+		sparql:    sparql,
+		snapshots: NewGraphSnapshotService(sparql, cfg),
+	}
+
+	srv := &http.Server{
+		Addr:              cfg.ListenAddr,
+		Handler:           api.handler(),
+		ReadHeaderTimeout: 5 * time.Second,
+	}
+
+	log.Printf("backend listening on %s", cfg.ListenAddr)
+	log.Fatal(srv.ListenAndServe())
+}