Initial QSfera import

Server/pkg/generators/natsnames.go

@@ -0,0 +1,41 @@
+package generators
+
+import (
+	"os"
+	"strconv"
+)
+
+// NType is an enum type for the different types of NATS connections
+type NType int
+
+// Enum values for NType
+const (
+	NTypeBus NType = iota
+	NTypeKeyValue
+	NTypeRegistry
+)
+
+// String returns the string representation of a NType
+func (n NType) String() string {
+	return []string{"bus", "kv", "reg"}[n]
+}
+
+// GenerateConnectionName generates a connection name for a NATS connection
+// The connection name will be formatted as follows: "hostname:pid:service:type"
+func GenerateConnectionName(service string, ntype NType) string {
+	host, err := os.Hostname()
+	if err != nil {
+		host = ""
+	}
+
+	return firstNRunes(host, 5) + ":" + strconv.Itoa(os.Getpid()) + ":" + service + ":" + ntype.String()
+}
+
+// firstNRunes returns the first n runes of a string
+func firstNRunes(s string, n int) string {
+	runes := []rune(s)
+	if n > len(runes) {
+		n = len(runes)
+	}
+	return string(runes[:n])
+}