basic functionality

src/NodeInfo.cpp

@@ -0,0 +1,21 @@
+#include "NodeInfo.h"
+
+const char* statusToStr(NodeInfo::Status status) {
+    switch (status) {
+        case NodeInfo::ACTIVE: return "active";
+        case NodeInfo::INACTIVE: return "inactive";
+        case NodeInfo::DEAD: return "dead";
+        default: return "unknown";
+    }
+}
+
+void updateNodeStatus(NodeInfo &node, unsigned long now) {
+    unsigned long diff = now - node.lastSeen;
+    if (diff < NODE_INACTIVE_THRESHOLD) {
+        node.status = NodeInfo::ACTIVE;
+    } else if (diff < NODE_INACTIVE_THRESHOLD) {
+        node.status = NodeInfo::INACTIVE;
+    } else {
+        node.status = NodeInfo::DEAD;
+    }
+}