feat: add labels to NodeInfo

examples/base/main.cpp

@@ -19,6 +19,13 @@ void setup() {
 	// Setup WiFi first
 	network.setupWiFi();
 
+	// Add example labels for this node
+	auto it = ctx.memberList->find(ctx.hostname);
+	if (it != ctx.memberList->end()) {
+		it->second.labels["app"] = "base";
+		it->second.labels["role"] = "demo";
+	}
+
 	// Initialize and start all tasks
 	taskManager.initialize();
 	

examples/neopixel/main.cpp

@@ -349,6 +349,15 @@ NeoPixelService neoService(ctx, taskManager, NEOPIXEL_COUNT, NEOPIXEL_PIN, NEOPI
 void setup() {
   network.setupWiFi();
 
+  // Add example labels for this node
+  auto it = ctx.memberList->find(ctx.hostname);
+  if (it != ctx.memberList->end()) {
+    it->second.labels["app"] = "neopixel";
+    it->second.labels["device"] = "light";
+    it->second.labels["pixels"] = String(NEOPIXEL_COUNT);
+    it->second.labels["pin"] = String(NEOPIXEL_PIN);
+  }
+
   taskManager.initialize();
 
   apiServer.begin();

examples/relay/main.cpp

@@ -107,6 +107,14 @@ void setup() {
     // Setup WiFi first
     network.setupWiFi();
 
+    // Add example labels for this node
+    auto it = ctx.memberList->find(ctx.hostname);
+    if (it != ctx.memberList->end()) {
+        it->second.labels["app"] = "relay";
+        it->second.labels["device"] = "actuator";
+        it->second.labels["pin"] = String(RELAY_PIN);
+    }
+
     // Initialize and start all tasks
     taskManager.initialize();
 

include/NodeInfo.h

@@ -3,6 +3,7 @@
 #include <IPAddress.h>
 #include <vector>
 #include <tuple>
+#include <map>
 
 struct NodeInfo {
     String hostname;
@@ -18,6 +19,7 @@ struct NodeInfo {
     } resources;
     unsigned long latency = 0; // ms since lastSeen
     std::vector<std::tuple<String, int>> apiEndpoints; // List of registered endpoints
+    std::map<String, String> labels; // Arbitrary node labels (key -> value)
 };
 
 const char* statusToStr(NodeInfo::Status status);

src/ApiServer.cpp

@@ -95,6 +95,16 @@ void ApiServer::onSystemStatusRequest(AsyncWebServerRequest *request) {
         apiObj["uri"] = std::get<0>(entry);
         apiObj["method"] = std::get<1>(entry);
     }
+    // Include local node labels if present
+    if (ctx.memberList) {
+        auto it = ctx.memberList->find(ctx.hostname);
+        if (it != ctx.memberList->end()) {
+            JsonObject labelsObj = doc["labels"].to<JsonObject>();
+            for (const auto& kv : it->second.labels) {
+                labelsObj[kv.first.c_str()] = kv.second;
+            }
+        }
+    }
     String json;
     serializeJson(doc, json);
     request->send(200, "application/json", json);
@@ -122,6 +132,13 @@ void ApiServer::onClusterMembersRequest(AsyncWebServerRequest *request) {
             apiObj["uri"] = std::get<0>(endpoint);
             methodToStr(endpoint, apiObj);
         }
+        // Add labels if present
+        if (!node.labels.empty()) {
+            JsonObject labelsObj = obj["labels"].to<JsonObject>();
+            for (const auto& kv : node.labels) {
+                labelsObj[kv.first.c_str()] = kv.second;
+            }
+        }
     }
     String json;
     serializeJson(doc, json);

src/ClusterManager.cpp

@@ -118,6 +118,16 @@ void ClusterManager::fetchNodeInfo(const IPAddress& ip) {
                             node.apiEndpoints.push_back(std::make_tuple(uri, method));
                         }
                     }
+                    // Parse labels if present
+                    node.labels.clear();
+                    if (doc["labels"].is<JsonObject>()) {
+                        JsonObject labelsObj = doc["labels"].as<JsonObject>();
+                        for (JsonPair kvp : labelsObj) {
+                            String k = String(kvp.key().c_str());
+                            String v = String(labelsObj[kvp.key()]);
+                            node.labels[k] = v;
+                        }
+                    }
                     Serial.printf("[Cluster] Fetched info for node: %s @ %s\n", node.hostname.c_str(), ip.toString().c_str());
                     break;
                 }

src/NetworkManager.cpp

@@ -54,5 +54,7 @@ void NetworkManager::setupWiFi() {
     }
     self.lastSeen = millis();
     self.status = NodeInfo::ACTIVE;
+    // Initialize a default label for demonstration; users can modify at runtime
+    self.labels["hostname"] = ctx.hostname;
     ctx.fire("node_discovered", &self);
 }