feat(kafka): add consumer group backlog view

apps/desktop/src/lib/__tests__/mq/mqListPanels.spec.ts

@@ -42,4 +42,22 @@ describe("MQ list panels", () => {
     expect(consoleSource).toContain(':namespace="selectedNamespace"');
     expect(consoleSource).toContain(':topic="selectedTopic"');
   });
+
+  it("keeps Kafka topic subscriptions and cluster-wide consumer groups on separate panels", () => {
+    const consoleSource = componentSource("MqAdminConsole.vue");
+
+    expect(consoleSource).toContain("KafkaConsumerGroupsPanel");
+    expect(consoleSource).toContain("activeTab === 'subscriptions' && canManageSubscriptions");
+    expect(consoleSource).toContain("activeTab === 'consumerGroups' && isKafkaCluster");
+    expect(consoleSource).not.toContain("activeTab === 'subscriptions' && canManageSubscriptions && isKafkaCluster");
+  });
+
+  it("routes a Kafka consumer-group partition topic to its topic-scoped subscriptions", () => {
+    const consoleSource = componentSource("MqAdminConsole.vue");
+
+    expect(consoleSource).toContain("function handleKafkaConsumerGroupTopicSelected(topic: string)");
+    expect(consoleSource).toContain("shortName: topic");
+    expect(consoleSource).toContain('setActiveTab("subscriptions")');
+    expect(consoleSource).toContain('@navigate-subscriptions="handleKafkaConsumerGroupTopicSelected"');
+  });
 });

apps/desktop/src/lib/backend/api.ts

@@ -639,6 +639,7 @@ export const mqListClientChannels = forward("mqListClientChannels");
 export const mqCloseClientConnection = forward("mqCloseClientConnection");
 export const mqListSubscriptions = forward("mqListSubscriptions");
 export const mqEnrichSubscriptions = forward("mqEnrichSubscriptions");
+export const mqGetKafkaConsumerGroupSnapshot = forward("mqGetKafkaConsumerGroupSnapshot");
 export const mqCreateSubscription = forward("mqCreateSubscription");
 export const mqDeleteSubscription = forward("mqDeleteSubscription");
 export const mqSkipMessages = forward("mqSkipMessages");

apps/desktop/src/lib/backend/mq-http.ts

@@ -13,6 +13,7 @@ import type {
   ListTopicsOpts,
   TopicStats,
   SubscriptionInfo,
+  KafkaConsumerGroupSnapshot,
   ResetPosition,
   SkipCount,
   ConsumerInfo,
@@ -221,6 +222,10 @@ export async function mqEnrichSubscriptions(connectionId: string, topic: TopicRe
   return post("/api/mq/subscriptions/enrich", { connectionId, topic });
 }
 
+export async function mqGetKafkaConsumerGroupSnapshot(connectionId: string): Promise<KafkaConsumerGroupSnapshot> {
+  return post("/api/mq/kafka/consumer-groups", { connectionId });
+}
+
 export async function mqCreateSubscription(connectionId: string, topic: TopicRef, sub: string, pos: ResetPosition): Promise<void> {
   return post("/api/mq/subscriptions/create", { connectionId, topic, sub, pos });
 }

apps/desktop/src/lib/backend/mq-tauri.ts

@@ -13,6 +13,7 @@ import type {
   ListTopicsOpts,
   TopicStats,
   SubscriptionInfo,
+  KafkaConsumerGroupSnapshot,
   ResetPosition,
   SkipCount,
   ConsumerInfo,
@@ -215,6 +216,10 @@ export async function mqEnrichSubscriptions(connectionId: string, topic: TopicRe
   return invoke("mq_enrich_subscriptions", { connectionId, topic });
 }
 
+export async function mqGetKafkaConsumerGroupSnapshot(connectionId: string): Promise<KafkaConsumerGroupSnapshot> {
+  return invoke("mq_get_kafka_consumer_group_snapshot", { connectionId });
+}
+
 export async function mqCreateSubscription(connectionId: string, topic: TopicRef, sub: string, pos: ResetPosition): Promise<void> {
   return invoke("mq_create_subscription", { connectionId, topic, sub, pos });
 }

apps/desktop/src/lib/mq/__tests__/mqConsoleDefaults.spec.ts

@@ -85,6 +85,17 @@ describe("mqConsoleDefaults", () => {
     expect(resolveAvailableMqTabs({ systemKind: "kafka", capabilities: caps })).toContain("messages");
   });
 
+  it("keeps Kafka topic subscriptions alongside the cluster-wide consumer groups tab", () => {
+    const tabs = resolveAvailableMqTabs({
+      systemKind: "kafka",
+      capabilities: defaultMqCapabilitiesForSystemKind("kafka"),
+    });
+
+    expect(tabs).toContain("subscriptions");
+    expect(tabs).toContain("consumerGroups");
+    expect(tabs.indexOf("consumerGroups")).toBe(tabs.indexOf("subscriptions") + 1);
+  });
+
   it("exposes the namespaces tab for RabbitMQ vhost management", () => {
     const caps = defaultMqCapabilitiesForSystemKind("rabbitmq");
     expect(resolveAvailableMqTabs({ systemKind: "rabbitmq", capabilities: caps })).toEqual(["namespaces", "topics", "subscriptions", "monitoring", "clients", "messages", "broker", "policies", "permissions"]);

apps/desktop/src/lib/mq/mqConsoleDefaults.ts

@@ -158,7 +158,7 @@ export function resolveRabbitMqDefaultVhost(config: ConnectionConfig | undefined
   return typeof vhost === "string" && vhost.trim() ? vhost.trim() : "/";
 }
 
-export type MqTab = "tenants" | "namespaces" | "topics" | "subscriptions" | "monitoring" | "clients" | "producers" | "policies" | "permissions" | "messages" | "raw" | "broker" | "dlq" | "trace";
+export type MqTab = "tenants" | "namespaces" | "topics" | "subscriptions" | "consumerGroups" | "monitoring" | "clients" | "producers" | "policies" | "permissions" | "messages" | "raw" | "broker" | "dlq" | "trace";
 
 export function resolveAvailableMqTabs(options: { systemKind?: MqSystemKind; capabilities: MqCapabilities }): MqTab[] {
   const { systemKind, capabilities } = options;
@@ -174,7 +174,10 @@ export function resolveAvailableMqTabs(options: { systemKind?: MqSystemKind; cap
   if (capabilities.supportsTenants) tabs.push("tenants");
   if (capabilities.supportsNamespaces) tabs.push("namespaces");
   tabs.push("topics");
-  if (capabilities.supportsSubscriptions) tabs.push("subscriptions");
+  if (capabilities.supportsSubscriptions) {
+    tabs.push("subscriptions");
+    if (systemKind === "kafka") tabs.push("consumerGroups");
+  }
   tabs.push("monitoring");
   tabs.push("clients");
   if (capabilities.supportsSendMessage || (systemKind === "kafka" && capabilities.supportsPeekMessages)) tabs.push("messages");