Initial "hardcoded" version of mapping.

mapping/map.go

@@ -0,0 +1,31 @@
+package mapping
+
+import (
+	"git.eve.moe/jackyyf/navigator/ipgeo"
+)
+
+const (
+	// Server IDs
+	WHOLESALE_INTERNET_10GE = "xe-mci1-us"
+	HETZNER_FSN_1GE         = "ge-fsn1-de"
+	HETZNER_HEL_1GE         = "ge-hel1-fi"
+	default_server          = WHOLESALE_INTERNET_10GE
+
+	// Served domain suffix
+	CHINA_MAINLAND_SUFFIX = ".eveedge.link"
+	GLOBAL_SUFFIX         = ".edge.eve.network"
+	default_suffix        = GLOBAL_SUFFIX
+)
+
+// Get returns the edge node that should be used for client.
+func Get(ip string) string {
+	db := ipgeo.Get()
+	info_en, err := db.FindInfo(ip, "EN")
+	if err != nil {
+		return default_server + default_suffix
+	}
+	if info_en.CountryCode == "CN" {
+		return default_server + CHINA_MAINLAND_SUFFIX
+	}
+	return default_server + GLOBAL_SUFFIX
+}