add files

src/resource_pool.go

@@ -0,0 +1,29 @@
+package main
+
+import (
+	"sync"
+)
+
+type ResourcePool struct {
+	mu sync.Mutex
+
+	nodes map[int][]Status
+}
+
+func (pool *ResourcePool) update(node MsgAgent) {
+	pool.mu.Lock()
+	defer pool.mu.Unlock()
+
+	pool.nodes[node.ClientID] = node.Status
+}
+
+func (pool *ResourcePool) getByID(id int) []Status {
+	pool.mu.Lock()
+	defer pool.mu.Unlock()
+
+	status, ok := pool.nodes[id]
+	if ok {
+		return status
+	}
+	return []Status{}
+}