wip: migrate to mono-repo. SPN has already been moved to spn/

spn/sluice/sluices.go

@@ -0,0 +1,47 @@
+package sluice
+
+import "sync"
+
+var (
+	sluices     = make(map[string]*Sluice)
+	sluicesLock sync.RWMutex
+)
+
+func getSluice(network string) (s *Sluice, ok bool) {
+	sluicesLock.RLock()
+	defer sluicesLock.RUnlock()
+
+	s, ok = sluices[network]
+	return
+}
+
+func addSluice(s *Sluice) {
+	sluicesLock.Lock()
+	defer sluicesLock.Unlock()
+
+	sluices[s.network] = s
+}
+
+func removeSluice(network string) {
+	sluicesLock.Lock()
+	defer sluicesLock.Unlock()
+
+	delete(sluices, network)
+}
+
+func copySluices() map[string]*Sluice {
+	sluicesLock.Lock()
+	defer sluicesLock.Unlock()
+
+	copied := make(map[string]*Sluice, len(sluices))
+	for k, v := range sluices {
+		copied[k] = v
+	}
+	return copied
+}
+
+func stopAllSluices() {
+	for _, sluice := range copySluices() {
+		sluice.abandon()
+	}
+}