Merge branch 'rc' of http://git.enode/deployer3000/trust-module-backend into swagger

Reviewed-on: http://git.enode/deployer3000/trust-module-backend/pulls/37
Reviewed-by: Vladislav Drozdov <ya2@ya.ru>

src/prometheus/index.ts

@@ -0,0 +1,5 @@
+// export * from './prometheus-metric.interface';
+// export * from './prometheus.service';
+// export * from './prometheus-cache.service';
+// export * from './prometheus-query.service';
+// export * from './prometheus-metadata.service';

src/prometheus/metrics.gateway.ts

@@ -1,23 +1,39 @@
-import { Injectable, Logger, OnModuleInit } from '@nestjs/common';
+import { Injectable, Logger, OnModuleInit, OnModuleDestroy } from '@nestjs/common';
 import { Server, WebSocket } from 'ws';
 import { createServer } from 'http';
 import { PrometheusService } from './prometheus.service';
 import { ConfigService } from '@nestjs/config';
+import { PrometheusMetric } from './prometheus-metric.interface';
 
 type Filters = Record<string, string>;
 
+interface RealtimeSubscription {
+    clients: Set<string>;
+    interval: NodeJS.Timeout;
+    metric: string;
+    filters: Filters;
+    lastData: PrometheusMetric[];
+}
+
+interface HistoricalRequest {
+    client: WebSocket;
+    requestId: string;
+}
+
 @Injectable()
-export class MetricsGateway implements OnModuleInit {
+export class MetricsGateway implements OnModuleInit, OnModuleDestroy {
     private readonly logger = new Logger(MetricsGateway.name);
     private wss: Server;
+    private httpServer: ReturnType<typeof createServer>;
 
-    private activeSockets = new Map<string, WebSocket>();
+    // Real-time подписки (одна на метрику, много клиентов)
-    private metricSubscriptions = new Map<
+    private realtimeSubscriptions = new Map<string, RealtimeSubscription>();
-        string,
-        { stopUpdates: () => void; clients: Set<string> }
-    >();
 
-    private lastSentData = new Map<string, any>();
+    // Активные клиенты
+    private activeClients = new Map<string, WebSocket>();
+
+    // Исторические запросы (для отслеживания)
+    private historicalRequests = new Map<string, HistoricalRequest>();
 
     constructor(
         private readonly prometheusService: PrometheusService,
@@ -25,367 +41,429 @@ export class MetricsGateway implements OnModuleInit {
     ) { }
 
     onModuleInit() {
-        const httpServer = createServer();
+        this.httpServer = createServer();
         this.wss = new Server({
-            server: httpServer,
+            server: this.httpServer,
             path: '/metrics-ws',
         });
 
         this.wss.on('connection', (client, request) =>
             this.handleConnection(client, request)
         );
+
         this.wss.on('error', (err) =>
             this.logger.error('WebSocket server error:', err)
         );
 
         const wsPort = Number(this.configService.get('WS_PORT') || 3001);
-        httpServer.listen(wsPort, () => {
+        this.httpServer.listen(wsPort, () => {
             this.logger.log(
-                `WebSocket server running at ws://localhost:${wsPort}/api/metrics-ws`
+                `WebSocket server running at ws://localhost:${wsPort}/metrics-ws`
             );
         });
     }
 
+    onModuleDestroy() {
+        // Очистка всех ресурсов
+        this.clearAllSubscriptions();
+        this.wss?.close();
+        this.httpServer?.close();
+    }
 
     private handleConnection(client: WebSocket, request: any) {
-        let clientId =
+        const clientId = this.getClientId(request?.url);
-            this.getQueryParams(request?.url).clientId ||
+        this.activeClients.set(clientId, client);
-            Math.random().toString(36).slice(2);
 
-        this.activeSockets.set(clientId, client);
         this.logger.log(`Client connected: ${clientId}`);
+        this.logger.debug(`Active clients: ${this.activeClients.size}, Subscriptions: ${this.realtimeSubscriptions.size}`);
 
         client.on('message', (raw) => {
             try {
-                const msg = JSON.parse(raw.toString());
+                const message = JSON.parse(raw.toString());
-                this.handleMessage(clientId, client, msg);
+                this.handleMessage(clientId, client, message);
             } catch (err) {
-                this.sendError(client, 'Invalid JSON');
+                this.sendError(client, 'Invalid JSON format');
             }
         });
 
-        client.on('close', () => this.cleanupClient(clientId));
+        client.on('close', () => this.handleClientDisconnect(clientId));
         client.on('error', (err) => {
             this.logger.error(`Client ${clientId} error:`, err);
-            this.cleanupClient(clientId);
+            this.handleClientDisconnect(clientId);
+        });
+
+        // Отправляем приветственное сообщение
+        this.sendMessage(client, {
+            event: 'connected',
+            data: { clientId, timestamp: Date.now() }
         });
     }
 
     private handleMessage(clientId: string, client: WebSocket, message: any) {
-        const { event, data } = message || {};
+        const { event, data, requestId } = message;
-        if (!event) return this.sendError(client, 'Event type is required');
+
+        if (!event) {
+            return this.sendError(client, 'Event type is required', requestId);
+        }
+
+        this.logger.debug(`Received event: ${event} from client: ${clientId}`);
 
         switch (event) {
+            case 'subscribe-realtime':
+                return this.handleSubscribeRealtime(clientId, client, data, requestId);
+
+            case 'unsubscribe-realtime':
+                return this.handleUnsubscribeRealtime(clientId, data, requestId);
+
             case 'unsubscribe-all':
-                return this.unsubscribeAllForClient(clientId);
+                return this.handleUnsubscribeAll(clientId, requestId);
 
-            case 'get-metrics':
+            case 'get-historical':
-                return this.handleGetMetrics(client, data);
+                return this.handleGetHistorical(client, data, requestId);
 
-            case 'subscribe-metric':
+            case 'get-current':
-                return this.handleSubscribeMetric(clientId, client, data);
+                return this.handleGetCurrent(client, data, requestId);
-
-            case 'unsubscribe-metric':
-                return this.handleUnsubscribeMetric(clientId, data);
 
             default:
-                return this.sendError(client, `Unknown event type: ${event}`);
+                return this.sendError(client, `Unknown event type: ${event}`, requestId);
         }
     }
 
-    private cleanupClient(clientId: string) {
+    private async handleSubscribeRealtime(
-        if (!this.activeSockets.has(clientId)) return;
+        clientId: string,
-        this.logger.log(`Client disconnected: ${clientId}`);
+        client: WebSocket,
-        this.activeSockets.delete(clientId);
+        payload: any,
-
+        requestId?: string
-        setTimeout(() => {
+    ) {
-            if (!this.activeSockets.has(clientId)) {
+        const { metric, filters = {}, interval = 10000 } = payload || {};
-            }
-        }, 5000);
-
-        for (const [key, sub] of this.metricSubscriptions) {
-            sub.clients.delete(clientId);
-            if (sub.clients.size === 0) {
-                sub.stopUpdates();
-                this.metricSubscriptions.delete(key);
-                this.lastSentData.delete(key);
-            }
-        }
-    }
-
-    private unsubscribeAllForClient(clientId: string) {
-        for (const [key, sub] of this.metricSubscriptions) {
-            if (sub.clients.has(clientId)) sub.clients.delete(clientId);
-            if (sub.clients.size === 0) {
-                sub.stopUpdates();
-                this.metricSubscriptions.delete(key);
-                this.lastSentData.delete(key);
-            }
-        }
-    }
-
-
-    private async handleGetMetrics(client: WebSocket, payload: any) {
-        const {
-            metric,
-            start,
-            end,
-            step,
-            isRangeQuery,
-            requestId,
-            filters = {},
-        } = payload || {};
 
         if (!metric) {
             return this.sendError(client, 'Metric name is required', requestId);
         }
 
-        if (isRangeQuery) {
-            try {
-                const rangeData = await this.prometheusService.fetchMetricsRange(
-                    metric,
-                    start,
-                    end,
-                    step,
-                    filters
-                );
-                this.logger.debug('RangeQuery result', JSON.stringify(rangeData).slice(0, 200));
-
-                return this.sendMessage(client, {
-                    event: 'metrics-data',
-                    data: rangeData,
-                    metric,
-                    requestId,
-                });
-            } catch (err: any) {
-                return this.sendError(client, err?.message || 'Range query error', requestId);
-            }
-        }
-
-        try {
         const subscriptionKey = this.getSubscriptionKey(metric, filters);
 
-            const initialData =
-                await this.prometheusService.fetchMetricsWithFilters(metric, filters);
-
-            this.sendMessage(client, {
-                event: 'metrics-data',
-                data: { metric, data: initialData, requestId },
-            });
-
-            let lastLocal = initialData;
-
-            const jitter = Math.floor(Math.random() * 5000);
-            setTimeout(() => {
-                const timer = setInterval(async () => {
         try {
-                        const fresh =
+            // Если подписка уже существует, просто добавляем клиента
-                            await this.prometheusService.fetchMetricsWithFilters(
+            if (this.realtimeSubscriptions.has(subscriptionKey)) {
-                                metric,
+                const subscription = this.realtimeSubscriptions.get(subscriptionKey)!;
-                                filters
+                subscription.clients.add(clientId);
-                            );
+
-                        if (!this.isDataEqual(lastLocal, fresh)) {
+                this.logger.log(`Client ${clientId} added to existing subscription: ${subscriptionKey}`);
+
+                // Отправляем последние данные клиенту
+                if (subscription.lastData) {
                     this.sendMessage(client, {
-                                event: 'metrics-data',
+                        event: 'realtime-data',
-                                data: { metric, data: fresh, requestId },
-                            });
-                            lastLocal = fresh;
-                        }
-                    } catch (e) {
-                        this.logger.error(
-                            `Error in on-demand periodic update for ${subscriptionKey}:`,
-                            (e as any)?.message
-                        );
-                    }
-                }, step || 5000);
-
-                const closeOnce = () => clearInterval(timer);
-                client.once('close', closeOnce);
-                client.once('error', closeOnce);
-            }, jitter);
-        } catch (err: any) {
-            return this.sendError(client, err?.message || 'get-metrics error', requestId);
-        }
-    }
-
-    private async handleSubscribeMetric(clientId: string, client: WebSocket, payload: any) {
-        const { metric, interval = 60000, filters = {} } = payload || {};
-        if (!metric) {
-            this.sendError(client, 'Metric name is required');
-            return;
-        }
-
-        const key = this.getSubscriptionKey(metric, filters);
-
-        try {
-            const initial = await this.prometheusService.fetchMetricsWithFilters(metric, filters);
-
-            if (!Array.isArray(initial)) {
-                throw new Error(`Expected array for metric ${metric}, got ${typeof initial}`);
-            }
-
-            this.sendMessage(client, {
-                event: 'metrics-data',
                         data: {
-                    metric: key,
+                            metric,
-                    data: initial,
+                            filters,
+                            data: subscription.lastData,
                             type: 'initial'
-                }
+                        },
+                        requestId
                     });
-
+                }
-            this.lastSentData.set(key, initial);
-
-            const stopUpdates = await this.sendPeriodicUpdates(
-                metric,
-                interval,
-                (freshData) => {
-                    if (!Array.isArray(freshData)) {
-                        this.logger.error(`Periodic update: expected array for ${key}, got ${typeof freshData}`);
                 return;
             }
 
-                    const lastData = this.lastSentData.get(key);
+            // Создаем новую подписку
-                    if (!this.isDataEqual(lastData, freshData)) {
+            this.logger.log(`Creating new realtime subscription: ${subscriptionKey}`);
-                        this.broadcast({
+
-                            event: 'metrics-data',
+            // Первоначальная загрузка данных
+            const initialData = await this.prometheusService.fetchMetricsWithFilters(metric, filters);
+
+            if (!Array.isArray(initialData)) {
+                throw new Error(`Expected array for metric ${metric}, got ${typeof initialData}`);
+            }
+
+            // Создаем интервал для обновлений
+            const intervalId = setInterval(
+                () => this.updateRealtimeData(subscriptionKey),
+                interval
+            );
+
+            // Сохраняем подписку
+            const subscription: RealtimeSubscription = {
+                clients: new Set([clientId]),
+                interval: intervalId,
+                metric,
+                filters,
+                lastData: initialData
+            };
+
+            this.realtimeSubscriptions.set(subscriptionKey, subscription);
+
+            // Отправляем данные клиенту
+            this.sendMessage(client, {
+                event: 'realtime-data',
                 data: {
-                                metric: key,
+                    metric,
+                    filters,
+                    data: initialData,
+                    type: 'initial'
+                },
+                requestId
+            });
+
+            this.logger.debug(`Subscription created for ${subscriptionKey} with ${interval}ms interval`);
+
+        } catch (error) {
+            this.logger.error(`Subscribe error for ${subscriptionKey}:`, error);
+            this.sendError(client, error.message, requestId);
+        }
+    }
+
+    private async updateRealtimeData(subscriptionKey: string) {
+        const subscription = this.realtimeSubscriptions.get(subscriptionKey);
+        if (!subscription) return;
+
+        try {
+            const freshData = await this.prometheusService.fetchMetricsWithFilters(
+                subscription.metric,
+                subscription.filters
+            );
+
+            if (!this.isDataEqual(subscription.lastData, freshData)) {
+                subscription.lastData = freshData;
+
+                // Рассылаем обновление всем подписанным клиентам
+                this.broadcastToClients(Array.from(subscription.clients), {
+                    event: 'realtime-data',
+                    data: {
+                        metric: subscription.metric,
+                        filters: subscription.filters,
                         data: freshData,
                         type: 'update'
                     }
                 });
-                        this.lastSentData.set(key, freshData);
+
+                this.logger.debug(`Data updated for subscription: ${subscriptionKey}`);
             }
-                },
+        } catch (error) {
+            this.logger.error(`Update error for ${subscriptionKey}:`, error);
+        }
+    }
+
+    private handleUnsubscribeRealtime(
+        clientId: string,
+        payload: any,
+        requestId?: string
+    ) {
+        const { metric, filters = {} } = payload || {};
+
+        if (!metric) {
+            return;
+        }
+
+        const subscriptionKey = this.getSubscriptionKey(metric, filters);
+        const subscription = this.realtimeSubscriptions.get(subscriptionKey);
+
+        if (!subscription) {
+            this.logger.debug(`No subscription found for: ${subscriptionKey}`);
+            return;
+        }
+
+        // Удаляем клиента из подписки
+        subscription.clients.delete(clientId);
+        this.logger.log(`Client ${clientId} unsubscribed from: ${subscriptionKey}`);
+
+        // Если больше нет клиентов, очищаем подписку
+        if (subscription.clients.size === 0) {
+            clearInterval(subscription.interval);
+            this.realtimeSubscriptions.delete(subscriptionKey);
+            this.logger.log(`Subscription removed: ${subscriptionKey}`);
+        }
+    }
+
+    private handleUnsubscribeAll(clientId: string, requestId?: string) {
+        let unsubscribedCount = 0;
+
+        for (const [key, subscription] of this.realtimeSubscriptions) {
+            if (subscription.clients.has(clientId)) {
+                subscription.clients.delete(clientId);
+                unsubscribedCount++;
+
+                if (subscription.clients.size === 0) {
+                    clearInterval(subscription.interval);
+                    this.realtimeSubscriptions.delete(key);
+                }
+            }
+        }
+
+        this.logger.log(`Client ${clientId} unsubscribed from ${unsubscribedCount} subscriptions`);
+    }
+
+    private async handleGetHistorical(
+        client: WebSocket,
+        payload: any,
+        requestId?: string
+    ) {
+        const { metric, start, end, step = 60, filters = {} } = payload || {};
+
+        if (!metric) {
+            return this.sendError(client, 'Metric name is required', requestId);
+        }
+
+        if (!start || !end) {
+            return this.sendError(client, 'Start and end time are required', requestId);
+        }
+
+        const requestKey = `${requestId || Date.now()}-${metric}`;
+
+        try {
+            this.logger.debug(`Fetching historical data for: ${metric}, from ${new Date(start).toISOString()} to ${new Date(end).toISOString()}`);
+
+            const historicalData = await this.prometheusService.fetchMetricsRange(
+                metric,
+                Math.floor(start / 1000), // Convert to seconds
+                Math.floor(end / 1000),   // Convert to seconds
+                step,
                 filters
             );
 
-            this.metricSubscriptions.set(key, {
+            this.sendMessage(client, {
-                stopUpdates,
+                event: 'historical-data',
-                clients: new Set([clientId]),
+                data: {
+                    metric,
+                    filters,
+                    data: historicalData,
+                    start,
+                    end,
+                    step
+                },
+                requestId
             });
 
-            const unsubscribe = () => {
+            this.logger.debug(`Historical data sent for: ${metric}, points: ${historicalData.length}`);
-                this.logger.log(`Unsubscribing client ${clientId} from ${key}`);
-                const subscription = this.metricSubscriptions.get(key);
-                if (subscription) {
-                    subscription.clients.delete(clientId);
-                    if (subscription.clients.size === 0) {
-                        subscription.stopUpdates();
-                        this.metricSubscriptions.delete(key);
-                        this.lastSentData.delete(key);
-                    }
-                }
-            };
-
-            client.on('close', unsubscribe);
-            client.on('error', unsubscribe);
 
         } catch (error) {
-            this.logger.error(`Subscription error for ${key}:`, error);
+            this.logger.error(`Historical data error for ${metric}:`, error);
-            this.sendError(client, error.message);
+            this.sendError(client, error.message, requestId);
-
-            if (!this.metricSubscriptions.has(key)) {
-                this.lastSentData.delete(key);
-            }
         }
     }
 
-    private handleUnsubscribeMetric(
+    private async handleGetCurrent(
-        clientId: string,
+        client: WebSocket,
-        payload: { metric: string; filters?: Filters }
+        payload: any,
+        requestId?: string
     ) {
         const { metric, filters = {} } = payload || {};
-        if (!metric) return;
 
-        const key = this.getSubscriptionKey(metric, filters);
+        if (!metric) {
-        const sub = this.metricSubscriptions.get(key);
+            return this.sendError(client, 'Metric name is required', requestId);
-        if (!sub) return;
-
-        sub.clients.delete(clientId);
-        if (sub.clients.size === 0) {
-            sub.stopUpdates();
-            this.metricSubscriptions.delete(key);
-            this.lastSentData.delete(key);
-        }
         }
 
-
-    private getQueryParams(rawUrl?: string): Record<string, string> {
         try {
-            const url = new URL(rawUrl || '', 'http://localhost'); // безопасная база
+            const currentData = await this.prometheusService.fetchMetricsWithFilters(metric, filters);
-            return Object.fromEntries(url.searchParams.entries());
+
+            this.sendMessage(client, {
+                event: 'current-data',
+                data: {
+                    metric,
+                    filters,
+                    data: currentData,
+                    timestamp: Date.now()
+                },
+                requestId
+            });
+
+        } catch (error) {
+            this.logger.error(`Current data error for ${metric}:`, error);
+            this.sendError(client, error.message, requestId);
+        }
+    }
+
+    private handleClientDisconnect(clientId: string) {
+        this.logger.log(`Client disconnected: ${clientId}`);
+
+        // Удаляем клиента из всех подписок
+        this.handleUnsubscribeAll(clientId);
+
+        // Удаляем из активных клиентов
+        this.activeClients.delete(clientId);
+
+        this.logger.debug(`Active clients: ${this.activeClients.size}, Subscriptions: ${this.realtimeSubscriptions.size}`);
+    }
+
+    private clearAllSubscriptions() {
+        for (const [key, subscription] of this.realtimeSubscriptions) {
+            clearInterval(subscription.interval);
+        }
+        this.realtimeSubscriptions.clear();
+        this.logger.log('All subscriptions cleared');
+    }
+
+    private getClientId(url?: string): string {
+        const params = this.getQueryParams(url);
+        return params.clientId || `client-${Date.now()}-${Math.random().toString(36).slice(2, 9)}`;
+    }
+
+    private getQueryParams(url?: string): Record<string, string> {
+        try {
+            if (!url) return {};
+            const urlObj = new URL(url, 'http://localhost');
+            return Object.fromEntries(urlObj.searchParams.entries());
         } catch {
             return {};
         }
     }
 
     private getSubscriptionKey(metric: string, filters: Filters): string {
-        const keys = Object.keys(filters).sort();
+        const sortedFilters = Object.keys(filters)
-        const filterString = keys
+            .sort()
-            .map((k) => `${k}=${encodeURIComponent(filters[k])}`)
+            .map(key => `${key}=${encodeURIComponent(filters[key])}`)
             .join('&');
-        return `${metric}${filterString ? `?${filterString}` : ''}`;
+
+        return sortedFilters ? `${metric}?${sortedFilters}` : metric;
     }
 
-    private isDataEqual(a: any[], b: any[]) {
+    private isDataEqual(a: PrometheusMetric[], b: PrometheusMetric[]): boolean {
-        if (!a || !b || a.length !== b.length) return false;
+        if (!Array.isArray(a) || !Array.isArray(b) || a.length !== b.length) {
-        return a.every((item, i) => {
+            return false;
-            const x = b[i];
+        }
+
+        return a.every((itemA, index) => {
+            const itemB = b[index];
             return (
-                item?.value === x?.value &&
+                itemA.value === itemB.value &&
-                item?.status === x?.status &&
+                itemA.timestamp === itemB.timestamp &&
-                item?.timestamp === x?.timestamp
+                itemA.device === itemB.device &&
+                itemA.source_id === itemB.source_id
             );
         });
     }
 
-    private async sendPeriodicUpdates(
-        metric: string,
-        interval: number,
-        cb: (data: any) => void,
-        filters: Filters
-    ) {
-        const initialDelay = Math.floor(Math.random() * 5000);
-        await new Promise((r) => setTimeout(r, initialDelay));
-
-        const timer = setInterval(async () => {
-            try {
-                const data = await this.prometheusService.fetchMetricsWithFilters(
-                    metric,
-                    filters
-                );
-                cb(data);
-            } catch (e: any) {
-                this.logger.error(
-                    `Error in periodic update for ${metric}:`,
-                    e?.message
-                );
-            }
-        }, interval);
-
-        return () => clearInterval(timer);
-    }
-
     private sendMessage(client: WebSocket, message: any) {
         if (client.readyState === WebSocket.OPEN) {
+            try {
                 client.send(JSON.stringify(message));
+            } catch (error) {
+                this.logger.error('Error sending message to client:', error);
+            }
         }
     }
 
-    private broadcast(message: any) {
+    private broadcastToClients(clientIds: string[], message: any) {
-        const raw = JSON.stringify(message);
+        const messageStr = JSON.stringify(message);
-        this.wss.clients.forEach((c) => {
+
-            if (c.readyState === WebSocket.OPEN) c.send(raw);
+        clientIds.forEach(clientId => {
+            const client = this.activeClients.get(clientId);
+            if (client && client.readyState === WebSocket.OPEN) {
+                try {
+                    client.send(messageStr);
+                } catch (error) {
+                    this.logger.error(`Error broadcasting to client ${clientId}:`, error);
+                }
+            }
         });
     }
 
     private sendError(client: WebSocket, error: string, requestId?: string) {
         this.sendMessage(client, {
-            event: 'metrics-error',
+            event: 'error',
             data: { error, requestId },
+            requestId
         });
     }
 }
-
-

src/prometheus/prometheus-cache.service.ts

@@ -0,0 +1,49 @@
+import { Injectable } from '@nestjs/common';
+import { PrometheusMetric } from './prometheus-metric.interface';
+
+interface CacheEntry<T> {
+    data: T;
+    timestamp: number;
+}
+
+interface MetadataCacheEntry {
+    type: string | null;
+    description: string | undefined;
+    timestamp: number;
+}
+
+@Injectable()
+export class PrometheusCacheService {
+    private metricCache = new Map<string, CacheEntry<PrometheusMetric[]>>();
+    private metadataCache = new Map<string, MetadataCacheEntry>();
+
+    getMetricCache(key: string): CacheEntry<PrometheusMetric[]> | undefined {
+        return this.metricCache.get(key);
+    }
+
+    setMetricCache(key: string, data: PrometheusMetric[], ttl: number = 5000): void {
+        this.metricCache.set(key, { data, timestamp: Date.now() + ttl });
+    }
+
+    getMetadataCache(key: string): MetadataCacheEntry | undefined {
+        return this.metadataCache.get(key);
+    }
+
+    setMetadataCache(
+        key: string,
+        type: string | null,
+        description: string | undefined,
+        ttl: number = 30000
+    ): void {
+        this.metadataCache.set(key, { type, description, timestamp: Date.now() + ttl });
+    }
+
+    isCacheValid(cacheEntry: { timestamp: number }): boolean {
+        return Date.now() < cacheEntry.timestamp;
+    }
+
+    clearCache(): void {
+        this.metricCache.clear();
+        this.metadataCache.clear();
+    }
+}

src/prometheus/prometheus-query.service.ts

@@ -0,0 +1,27 @@
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class PrometheusQueryService {
+    buildFilteredQuery(metric: string, filters: Record<string, string>): string {
+        const filterParts = Object.entries(filters)
+            .filter(([_, value]) => value !== undefined && value !== null && value !== "")
+            .map(([key, value]) => `${key}="${value}"`);
+
+        return filterParts.length > 0
+            ? `${metric}{${filterParts.join(',')}}`
+            : metric;
+    }
+
+    calculateOptimalStep(start: number, end: number): number {
+        const duration = end - start;
+        return Math.max(Math.floor(duration / 1000), 15);
+    }
+
+    generateCacheKey(metric: string, filters: Record<string, string> = {}): string {
+        return `${metric}:${JSON.stringify(filters)}`;
+    }
+
+    generateMetadataCacheKey(metric: string, type: 'type' | 'description'): string {
+        return `metadata-${type}-${metric}`;
+    }
+}

src/prometheus/prometheus.module.ts

@@ -1,12 +1,20 @@
 import { Module } from '@nestjs/common';
 import { HttpModule } from '@nestjs/axios';
+import { ConfigModule } from '@nestjs/config';
 import { PrometheusService } from './prometheus.service';
 import { MetricsController } from './metrics.controller';
 import { MetricsGateway } from './metrics.gateway';
+import { PrometheusCacheService } from './prometheus-cache.service';
+import { PrometheusQueryService } from './prometheus-query.service';
 
 @Module({
-    imports: [HttpModule],
+  imports: [HttpModule, ConfigModule],
-    providers: [PrometheusService, MetricsGateway], 
+  providers: [
+    PrometheusCacheService,
+    PrometheusQueryService,
+    PrometheusService,
+    MetricsGateway
+  ],
   controllers: [MetricsController],
   exports: [PrometheusService]
 })

src/prometheus/prometheus.service.ts

@@ -1,47 +1,371 @@
+// import { Injectable } from '@nestjs/common';
+// import { HttpService } from '@nestjs/axios';
+// import { ConfigService } from '@nestjs/config';
+// import { lastValueFrom } from 'rxjs';
+// import { PrometheusMetric } from './prometheus-metric.interface';
+// import { MenuItem } from '../menu/menu.interface';
+
+// @Injectable()
+// export class PrometheusService {
+//   private readonly prometheusUrl: string;
+//   private metricCache = new Map<string, { data: any; timestamp: number }>();
+//   private metadataCache = new Map<string, { type: string | null; description: string | undefined; timestamp: number }>();
+
+//   constructor(
+//     private readonly httpService: HttpService,
+//     private readonly configService: ConfigService
+//   ) {
+//     this.prometheusUrl = this.configService.get<string>('PROMETHEUS_API', 'http://localhost:9090');
+//     console.log('Prometheus API URL:', this.prometheusUrl);
+//   }
+
+//   async fetchMetricType(metric: string): Promise<string | null> {
+//     const cacheKey = `metadata-type-${metric}`;
+//     const cacheEntry = this.metadataCache.get(cacheKey);
+
+//     if (cacheEntry && Date.now() - cacheEntry.timestamp < 30000) {
+//       return cacheEntry.type;
+//     }
+
+//     try {
+//       const response = await lastValueFrom(
+//         this.httpService.get(`${this.prometheusUrl}/metadata`, {
+//           params: { metric },
+//         })
+//       );
+//       const metadata = response.data.data[metric];
+//       const result = metadata?.length ? metadata[0].type : null;
+
+//       this.metadataCache.set(cacheKey, { 
+//         type: result, 
+//         description: cacheEntry?.description, 
+//         timestamp: Date.now() 
+//       });
+
+//       return result;
+//     } catch (error) {
+//       console.error(`Ошибка при получении типа метрики ${metric}:`, error);
+//       return cacheEntry?.type || null;
+//     }
+//   }
+
+//   async fetchMetricDescription(metric: string): Promise<string | undefined> {
+//     const cacheKey = `metadata-description-${metric}`;
+//     const cacheEntry = this.metadataCache.get(cacheKey);
+
+//     if (cacheEntry && Date.now() - cacheEntry.timestamp < 30000) {
+//       return cacheEntry.description;
+//     }
+
+//     try {
+//       const response = await lastValueFrom(
+//         this.httpService.get(`${this.prometheusUrl}/metadata`, {
+//           params: { metric },
+//         })
+//       );
+//       const metadata = response.data.data[metric];
+//       const result = metadata?.length ? metadata[0].help : undefined;
+
+//       this.metadataCache.set(cacheKey, { 
+//         type: cacheEntry?.type ?? null, 
+//         description: result, 
+//         timestamp: Date.now() 
+//     });
+
+//       return result;
+//     } catch (error) {
+//       console.error(`Ошибка при получении описания метрики ${metric}:`, error);
+//       return cacheEntry?.description;
+//     }
+//   }
+
+//   async fetchMetrics(metric: string): Promise<PrometheusMetric[]> {
+//     const cacheKey = `${metric}:{}`;
+//     const cacheEntry = this.metricCache.get(cacheKey);
+
+//     if (cacheEntry && Date.now() - cacheEntry.timestamp < 5000) {
+//       return cacheEntry.data;
+//     }
+
+//     try {
+//       const response = await lastValueFrom(
+//         this.httpService.get(`${this.prometheusUrl}/query`, {
+//           params: { query: metric },
+//         })
+//       );
+
+//       const metricType = await this.fetchMetricType(metric);
+//       const metricDescription = await this.fetchMetricDescription(metric);
+
+//       const result = response.data.data.result.map((entry): PrometheusMetric => ({
+//         __name__: entry.metric.__name__ || metric,
+//         device: entry.metric.device,
+//         instance: entry.metric.instance,
+//         job: entry.metric.job,
+//         source_id: entry.metric.source_id,
+//         status: entry.metric.status || '0',
+//         timestamp: entry.value[0] * 1000,
+//         value: parseFloat(entry.value[1]),
+//         type: metricType || 'gauge',
+//         description: metricDescription,
+//         ...entry.metric
+//       }));
+
+//       this.metricCache.set(cacheKey, { data: result, timestamp: Date.now() });
+//       return result;
+//     } catch (error) {
+//       console.error(`Error fetching metrics for ${metric}:`, error);
+//       if (cacheEntry) return cacheEntry.data;
+//       throw error;
+//     }
+//   }
+
+//   async fetchMetricsWithFilters(metric: string, filters: Record<string, string>): Promise<PrometheusMetric[]> {
+//     const cacheKey = `${metric}:${JSON.stringify(filters)}`;
+//     const cacheEntry = this.metricCache.get(cacheKey);
+
+//     if (cacheEntry && Date.now() - cacheEntry.timestamp < 5000) {
+//       return cacheEntry.data;
+//     }
+
+//     try {
+//       const query = this.buildFilteredQuery(metric, filters);
+//       const response = await lastValueFrom(
+//         this.httpService.get(`${this.prometheusUrl}/query`, {
+//           params: { query }
+//         })
+//       );
+
+//       const metricType = await this.fetchMetricType(metric);
+//       const metricDescription = await this.fetchMetricDescription(metric);
+
+//       const result = response.data.data.result.map((entry): PrometheusMetric => ({
+//         __name__: entry.metric.__name__ || metric,
+//         device: entry.metric.device,
+//         instance: entry.metric.instance,
+//         job: entry.metric.job,
+//         source_id: entry.metric.source_id,
+//         status: entry.metric.status || '0',
+//         timestamp: entry.value[0] * 1000,
+//         value: parseFloat(entry.value[1]),
+//         type: metricType || 'gauge',
+//         description: metricDescription,
+//         ...entry.metric
+//       }));
+
+//       this.metricCache.set(cacheKey, { data: result, timestamp: Date.now() });
+//       return result;
+//     } catch (error) {
+//       console.error(`Error fetching metrics with filters for ${metric}:`, error);
+//       if (cacheEntry) return cacheEntry.data;
+//       throw error;
+//     }
+//   }
+
+//   private buildFilteredQuery(metric: string, filters: Record<string, string>): string {
+//     const filterParts = Object.entries(filters)
+//       .filter(([_, value]) => value !== undefined && value !== null && value !== "")
+//       .map(([key, value]) => {
+//         return `${key}="${value}"`;
+//       });
+
+//     return filterParts.length > 0
+//       ? `${metric}{${filterParts.join(',')}}`
+//       : metric;
+//   }
+
+//   async fetchMetricsRange(metric: string, start: number, end: number, step: number, filters: Record<string, string> = {}): Promise<PrometheusMetric[]> {
+//     // Рассчитываем оптимальный шаг, если не указан
+//     const duration = end - start;
+//     const optimalStep = Math.max(Math.floor(duration / 1000), 15); // Минимум 15 секунд
+
+//     const query = this.buildFilteredQuery(metric, {
+//       ...filters,
+//       instance: '192.168.2.34:9050'
+//     });
+
+//     try {
+//       const response = await lastValueFrom(
+//         this.httpService.get(`${this.prometheusUrl}/query_range`, {
+//           params: {
+//             query,
+//             start,
+//             end,
+//             step: optimalStep.toString()
+//           },
+//         })
+//       );
+
+//       const metricType = await this.fetchMetricType(metric);
+//       const metricDescription = await this.fetchMetricDescription(metric);
+
+//       return response.data.data.result.flatMap((entry) =>
+//         entry.values.map((value): PrometheusMetric => ({
+//           __name__: entry.metric.__name__ || metric,
+//           device: entry.metric.device,
+//           instance: entry.metric.instance,
+//           job: entry.metric.job,
+//           source_id: entry.metric.source_id,
+//           status: entry.metric.status || '0',
+//           timestamp: value[0] * 1000,
+//           value: parseFloat(value[1]),
+//           type: metricType || 'gauge',
+//           description: metricDescription,
+//           ...entry.metric
+//         }))
+//       );
+//     } catch (error) {
+//       console.error('Error in fetchMetricsRange:', {
+//         error: error.response?.data || error.message,
+//         query,
+//         filters
+//       });
+//       throw error;
+//     }
+//   }
+
+//   async getMetricsForMenuItem(menuItem: MenuItem): Promise<PrometheusMetric[]> {
+//     if (!menuItem.metric || !menuItem.filters) {
+//       throw new Error('MenuItem is not a metric item');
+//     }
+
+//     return this.fetchMetricsWithFilters(menuItem.metric, menuItem.filters);
+//   }
+
+//   async fetchMetricMetadata(metric: string): Promise<{
+//     name: string;
+//     help?: string;
+//     type?: string;
+//   }> {
+//     try {
+//       const response = await lastValueFrom(
+//         this.httpService.get(`${this.prometheusUrl}/metadata`, {
+//           params: { metric }
+//         })
+//       );
+
+//       const data = response.data?.data?.[metric]?.[0];
+
+//       return {
+//         name: metric,
+//         help: data?.help,
+//         type: data?.type
+//       };
+//     } catch (error) {
+//       console.error(`Error fetching metadata for ${metric}:`, error);
+//       return {
+//         name: metric
+//       };
+//     }
+//   }
+
+//   async fetchMetricSeries(metric: string): Promise<Record<string, string>[]> {
+//     try {
+//       const response = await lastValueFrom(
+//         this.httpService.get(`${this.prometheusUrl}/series`, {
+//           params: { 'match[]': metric }
+//         })
+//       );
+
+//       return response.data.data || [];
+//     } catch (error) {
+//       console.error(`Error fetching series for ${metric}:`, error);
+//       return [];
+//     }
+//   }
+
+//   async fetchAllMetrics(): Promise<string[]> {
+//     try {
+//       const response = await lastValueFrom(
+//         this.httpService.get(`${this.prometheusUrl}/label/__name__/values`)
+//       );
+//       return response.data.data;
+//     } catch (error) {
+//       console.error('Error fetching all metrics:', error);
+//       return [];
+//     }
+//   }
+
+//   async fetchAllMetricsWithValues(): Promise<any[]> {
+//     const metricNames = await this.fetchAllMetrics();
+//     const zvksMetrics = metricNames.filter(metric => 
+//         metric.startsWith('zvks') || 
+//         metric.includes('server_li') || 
+//         metric.includes('application_li')
+//     );
+
+//     const promises = zvksMetrics.map(async (metric) => {
+//       try {
+//         const data = await this.fetchMetrics(metric);
+//         return { metric, data };
+//       } catch (error) {
+//         console.error(`Error fetching data for metric ${metric}:`, error);
+//         return { metric, data: [] };
+//       }
+//     });
+
+//     return Promise.all(promises);
+//   }
+
+//   clearCache(): void {
+//     this.metricCache.clear();
+//     this.metadataCache.clear();
+//   }
+// }
+
+
 import { Injectable } from '@nestjs/common';
 import { HttpService } from '@nestjs/axios';
 import { ConfigService } from '@nestjs/config';
 import { lastValueFrom } from 'rxjs';
-import { PrometheusMetric } from './prometheus-metric.interface';
 import { MenuItem } from '../menu/menu.interface';
+import { PrometheusMetric } from './prometheus-metric.interface';
+import { PrometheusCacheService } from './prometheus-cache.service';
+import { PrometheusQueryService } from './prometheus-query.service';
+
+interface PrometheusResponse {
+  status: string;
+  data: any;
+}
 
 @Injectable()
 export class PrometheusService {
   private readonly prometheusUrl: string;
-  private metricCache = new Map<string, { data: any; timestamp: number }>();
-  private metadataCache = new Map<string, { type: string | null; description: string | undefined; timestamp: number }>();
 
   constructor(
     private readonly httpService: HttpService,
-    private readonly configService: ConfigService
+    private readonly configService: ConfigService,
+    private readonly cacheService: PrometheusCacheService,
+    private readonly queryService: PrometheusQueryService
   ) {
     this.prometheusUrl = this.configService.get<string>('PROMETHEUS_API', 'http://localhost:9090');
     console.log('Prometheus API URL:', this.prometheusUrl);
   }
 
-  async fetchMetricType(metric: string): Promise<string | null> {
+  private async executeQuery(url: string, params: any): Promise<any> {
-    const cacheKey = `metadata-type-${metric}`;
+    const response = await lastValueFrom(
-    const cacheEntry = this.metadataCache.get(cacheKey);
+      this.httpService.get(url, { params })
+    );
+    return response.data;
+  }
 
-    if (cacheEntry && Date.now() - cacheEntry.timestamp < 30000) {
+  async fetchMetricType(metric: string): Promise<string | null> {
+    const cacheKey = this.queryService.generateMetadataCacheKey(metric, 'type');
+    const cacheEntry = this.cacheService.getMetadataCache(cacheKey);
+
+    if (cacheEntry && this.cacheService.isCacheValid(cacheEntry)) {
       return cacheEntry.type;
     }
 
     try {
-      const response = await lastValueFrom(
+      const data = await this.executeQuery(`${this.prometheusUrl}/metadata`, {
-        this.httpService.get(`${this.prometheusUrl}/metadata`, {
         params: { metric },
-        })
-      );
-      const metadata = response.data.data[metric];
-      const result = metadata?.length ? metadata[0].type : null;
-      
-      this.metadataCache.set(cacheKey, { 
-        type: result, 
-        description: cacheEntry?.description, 
-        timestamp: Date.now() 
       });
 
+      const metadata = data.data[metric];
+      const result = metadata?.length ? metadata[0].type : null;
+
+      this.cacheService.setMetadataCache(cacheKey, result, cacheEntry?.description);
       return result;
     } catch (error) {
       console.error(`Ошибка при получении типа метрики ${metric}:`, error);
@@ -50,28 +374,22 @@ export class PrometheusService {
   }
 
   async fetchMetricDescription(metric: string): Promise<string | undefined> {
-    const cacheKey = `metadata-description-${metric}`;
+    const cacheKey = this.queryService.generateMetadataCacheKey(metric, 'description');
-    const cacheEntry = this.metadataCache.get(cacheKey);
+    const cacheEntry = this.cacheService.getMetadataCache(cacheKey);
 
-    if (cacheEntry && Date.now() - cacheEntry.timestamp < 30000) {
+    if (cacheEntry && this.cacheService.isCacheValid(cacheEntry)) {
       return cacheEntry.description;
     }
 
     try {
-      const response = await lastValueFrom(
+      const data = await this.executeQuery(`${this.prometheusUrl}/metadata`, {
-        this.httpService.get(`${this.prometheusUrl}/metadata`, {
         params: { metric },
-        })
-      );
-      const metadata = response.data.data[metric];
-      const result = metadata?.length ? metadata[0].help : undefined;
-      
-      this.metadataCache.set(cacheKey, { 
-        type: cacheEntry?.type ?? null, 
-        description: result, 
-        timestamp: Date.now() 
       });
 
+      const metadata = data.data[metric];
+      const result = metadata?.length ? metadata[0].help : undefined;
+
+      this.cacheService.setMetadataCache(cacheKey, cacheEntry?.type ?? null, result);
       return result;
     } catch (error) {
       console.error(`Ошибка при получении описания метрики ${metric}:`, error);
@@ -79,39 +397,46 @@ export class PrometheusService {
     }
   }
 
-  async fetchMetrics(metric: string): Promise<PrometheusMetric[]> {
+  private transformMetricData(
-    const cacheKey = `${metric}:{}`;
+    entry: any,
-    const cacheEntry = this.metricCache.get(cacheKey);
+    metric: string,
+    type: string | null,
+    description: string | undefined
+  ): PrometheusMetric {
+    return {
+      __name__: entry.metric.__name__ || metric,
+      device: entry.metric.device || '',
+      source_id: entry.metric.source_id || '',
+      value: parseFloat(entry.value[1]),
+      timestamp: entry.value[0] * 1000,
+      type: type || 'gauge',
+      description
+    };
+  }
 
-    if (cacheEntry && Date.now() - cacheEntry.timestamp < 5000) {
+  async fetchMetrics(metric: string): Promise<PrometheusMetric[]> {
+    const cacheKey = this.queryService.generateCacheKey(metric);
+    const cacheEntry = this.cacheService.getMetricCache(cacheKey);
+
+    if (cacheEntry && this.cacheService.isCacheValid(cacheEntry)) {
       return cacheEntry.data;
     }
 
     try {
-      const response = await lastValueFrom(
+      const data = await this.executeQuery(`${this.prometheusUrl}/query`, {
-        this.httpService.get(`${this.prometheusUrl}/query`, {
+        query: metric
-          params: { query: metric },
+      });
-        })
+
+      const [type, description] = await Promise.all([
+        this.fetchMetricType(metric),
+        this.fetchMetricDescription(metric)
+      ]);
+
+      const result = data.data.result.map((entry: any) =>
+        this.transformMetricData(entry, metric, type, description)
       );
 
-      const metricType = await this.fetchMetricType(metric);
+      this.cacheService.setMetricCache(cacheKey, result);
-      const metricDescription = await this.fetchMetricDescription(metric);
-
-      const result = response.data.data.result.map((entry): PrometheusMetric => ({
-        __name__: entry.metric.__name__ || metric,
-        device: entry.metric.device,
-        instance: entry.metric.instance,
-        job: entry.metric.job,
-        source_id: entry.metric.source_id,
-        status: entry.metric.status || '0',
-        timestamp: entry.value[0] * 1000,
-        value: parseFloat(entry.value[1]),
-        type: metricType || 'gauge',
-        description: metricDescription,
-        ...entry.metric
-      }));
-
-      this.metricCache.set(cacheKey, { data: result, timestamp: Date.now() });
       return result;
     } catch (error) {
       console.error(`Error fetching metrics for ${metric}:`, error);
@@ -121,39 +446,27 @@ export class PrometheusService {
   }
 
   async fetchMetricsWithFilters(metric: string, filters: Record<string, string>): Promise<PrometheusMetric[]> {
-    const cacheKey = `${metric}:${JSON.stringify(filters)}`;
+    const cacheKey = this.queryService.generateCacheKey(metric, filters);
-    const cacheEntry = this.metricCache.get(cacheKey);
+    const cacheEntry = this.cacheService.getMetricCache(cacheKey);
 
-    if (cacheEntry && Date.now() - cacheEntry.timestamp < 5000) {
+    if (cacheEntry && this.cacheService.isCacheValid(cacheEntry)) {
       return cacheEntry.data;
     }
 
     try {
-      const query = this.buildFilteredQuery(metric, filters);
+      const query = this.queryService.buildFilteredQuery(metric, filters);
-      const response = await lastValueFrom(
+      const data = await this.executeQuery(`${this.prometheusUrl}/query`, { query });
-        this.httpService.get(`${this.prometheusUrl}/query`, {
+
-          params: { query }
+      const [type, description] = await Promise.all([
-        })
+        this.fetchMetricType(metric),
+        this.fetchMetricDescription(metric)
+      ]);
+
+      const result = data.data.result.map((entry: any) =>
+        this.transformMetricData(entry, metric, type, description)
       );
 
-      const metricType = await this.fetchMetricType(metric);
+      this.cacheService.setMetricCache(cacheKey, result);
-      const metricDescription = await this.fetchMetricDescription(metric);
-
-      const result = response.data.data.result.map((entry): PrometheusMetric => ({
-        __name__: entry.metric.__name__ || metric,
-        device: entry.metric.device,
-        instance: entry.metric.instance,
-        job: entry.metric.job,
-        source_id: entry.metric.source_id,
-        status: entry.metric.status || '0',
-        timestamp: entry.value[0] * 1000,
-        value: parseFloat(entry.value[1]),
-        type: metricType || 'gauge',
-        description: metricDescription,
-        ...entry.metric
-      }));
-
-      this.metricCache.set(cacheKey, { data: result, timestamp: Date.now() });
       return result;
     } catch (error) {
       console.error(`Error fetching metrics with filters for ${metric}:`, error);
@@ -162,56 +475,42 @@ export class PrometheusService {
     }
   }
 
-  private buildFilteredQuery(metric: string, filters: Record<string, string>): string {
+  async fetchMetricsRange(
-    const filterParts = Object.entries(filters)
+    metric: string,
-      .filter(([_, value]) => value !== undefined && value !== null && value !== "")
+    start: number,
-      .map(([key, value]) => {
+    end: number,
-        return `${key}="${value}"`;
+    step: number,
-      });
+    filters: Record<string, string> = {}
-
+  ): Promise<PrometheusMetric[]> {
-    return filterParts.length > 0
+    const query = this.queryService.buildFilteredQuery(metric, {
-      ? `${metric}{${filterParts.join(',')}}`
-      : metric;
-  }
-
-  async fetchMetricsRange(metric: string, start: number, end: number, step: number, filters: Record<string, string> = {}): Promise<PrometheusMetric[]> {
-    // Рассчитываем оптимальный шаг, если не указан
-    const duration = end - start;
-    const optimalStep = Math.max(Math.floor(duration / 1000), 15); // Минимум 15 секунд
-    
-    const query = this.buildFilteredQuery(metric, {
       ...filters,
       instance: '192.168.2.34:9050'
     });
 
+    const optimalStep = this.queryService.calculateOptimalStep(start, end);
+
     try {
-      const response = await lastValueFrom(
+      const data = await this.executeQuery(`${this.prometheusUrl}/query_range`, {
-        this.httpService.get(`${this.prometheusUrl}/query_range`, {
-          params: {
         query,
         start,
         end,
         step: optimalStep.toString()
-          },
+      });
-        })
-      );
 
-      const metricType = await this.fetchMetricType(metric);
+      const [type, description] = await Promise.all([
-      const metricDescription = await this.fetchMetricDescription(metric);
+        this.fetchMetricType(metric),
+        this.fetchMetricDescription(metric)
+      ]);
 
-      return response.data.data.result.flatMap((entry) =>
+      return data.data.result.flatMap((entry: any) =>
-        entry.values.map((value): PrometheusMetric => ({
+        entry.values.map((value: any) => ({
           __name__: entry.metric.__name__ || metric,
-          device: entry.metric.device,
+          device: entry.metric.device || '',
-          instance: entry.metric.instance,
+          source_id: entry.metric.source_id || '',
-          job: entry.metric.job,
-          source_id: entry.metric.source_id,
-          status: entry.metric.status || '0',
-          timestamp: value[0] * 1000,
           value: parseFloat(value[1]),
-          type: metricType || 'gauge',
+          timestamp: value[0] * 1000,
-          description: metricDescription,
+          type: type || 'gauge',
-          ...entry.metric
+          description
         }))
       );
     } catch (error) {
@@ -238,36 +537,30 @@ export class PrometheusService {
     type?: string;
   }> {
     try {
-      const response = await lastValueFrom(
+      const data = await this.executeQuery(`${this.prometheusUrl}/metadata`, {
-        this.httpService.get(`${this.prometheusUrl}/metadata`, {
         params: { metric }
-        })
+      });
-      );
 
-      const data = response.data?.data?.[metric]?.[0];
+      const metadata = data?.data?.[metric]?.[0];
 
       return {
         name: metric,
-        help: data?.help,
+        help: metadata?.help,
-        type: data?.type
+        type: metadata?.type
       };
     } catch (error) {
       console.error(`Error fetching metadata for ${metric}:`, error);
-      return {
+      return { name: metric };
-        name: metric
-      };
     }
   }
 
   async fetchMetricSeries(metric: string): Promise<Record<string, string>[]> {
     try {
-      const response = await lastValueFrom(
+      const data = await this.executeQuery(`${this.prometheusUrl}/series`, {
-        this.httpService.get(`${this.prometheusUrl}/series`, {
+        'match[]': metric
-          params: { 'match[]': metric }
+      });
-        })
-      );
 
-      return response.data.data || [];
+      return data.data || [];
     } catch (error) {
       console.error(`Error fetching series for ${metric}:`, error);
       return [];
@@ -276,17 +569,15 @@ export class PrometheusService {
 
   async fetchAllMetrics(): Promise<string[]> {
     try {
-      const response = await lastValueFrom(
+      const data = await this.executeQuery(`${this.prometheusUrl}/label/__name__/values`, {});
-        this.httpService.get(`${this.prometheusUrl}/label/__name__/values`)
+      return data.data;
-      );
-      return response.data.data;
     } catch (error) {
       console.error('Error fetching all metrics:', error);
       return [];
     }
   }
 
-  async fetchAllMetricsWithValues(): Promise<any[]> {
+  async fetchAllMetricsWithValues(): Promise<Array<{ metric: string; data: PrometheusMetric[] }>> {
     const metricNames = await this.fetchAllMetrics();
     const zvksMetrics = metricNames.filter(metric =>
       metric.startsWith('zvks') ||
@@ -308,7 +599,6 @@ export class PrometheusService {
   }
 
   clearCache(): void {
-    this.metricCache.clear();
+    this.cacheService.clearCache();
-    this.metadataCache.clear();
   }
 }