Initial commit for backend

.gitignore

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+# compiled output
+/dist
+/node_modules
+/build
+
+# Logs
+logs
+*.log
+npm-debug.log*
+pnpm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# OS
+.DS_Store
+
+# Tests
+/coverage
+/.nyc_output
+
+# IDEs and editors
+/.idea
+.project
+.classpath
+.c9/
+*.launch
+.settings/
+*.sublime-workspace
+
+# IDE - VSCode
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+
+# dotenv environment variable files
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# temp directory
+.temp
+.tmp
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json

.prettierrc

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+{
+  "singleQuote": true,
+  "trailingComma": "all"
+}

Dockerfile

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+FROM node:22.13.0
+
+WORKDIR /app
+
+COPY package.json package-lock.json ./
+
+RUN npm install
+
+COPY . .
+
+CMD ["npm", "run", "start"]

eslint.config.mjs

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+// @ts-check
+import eslint from '@eslint/js';
+import eslintPluginPrettierRecommended from 'eslint-plugin-prettier/recommended';
+import globals from 'globals';
+import tseslint from 'typescript-eslint';
+
+export default tseslint.config(
+  {
+    ignores: ['eslint.config.mjs'],
+  },
+  eslint.configs.recommended,
+  ...tseslint.configs.recommendedTypeChecked,
+  eslintPluginPrettierRecommended,
+  {
+    languageOptions: {
+      globals: {
+        ...globals.node,
+        ...globals.jest,
+      },
+      ecmaVersion: 5,
+      sourceType: 'module',
+      parserOptions: {
+        projectService: true,
+        tsconfigRootDir: import.meta.dirname,
+      },
+    },
+  },
+  {
+    rules: {
+      '@typescript-eslint/no-explicit-any': 'off',
+      '@typescript-eslint/no-floating-promises': 'warn',
+      '@typescript-eslint/no-unsafe-argument': 'warn'
+    },
+  },
+);

nest-cli.json

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+{
+  "$schema": "https://json.schemastore.org/nest-cli",
+  "collection": "@nestjs/schematics",
+  "sourceRoot": "src",
+  "compilerOptions": {
+    "deleteOutDir": true
+  }
+}

package.json

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+{
+  "name": "importer",
+  "version": "0.0.1",
+  "description": "",
+  "author": "",
+  "private": true,
+  "license": "UNLICENSED",
+  "scripts": {
+    "build": "nest build",
+    "format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
+    "start": "nest start",
+    "start:dev": "nest start --watch",
+    "start:debug": "nest start --debug --watch",
+    "start:prod": "node dist/main",
+    "lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
+    "test": "jest",
+    "test:watch": "jest --watch",
+    "test:cov": "jest --coverage",
+    "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
+    "test:e2e": "jest --config ./test/jest-e2e.json"
+  },
+  "dependencies": {
+    "@nestjs/axios": "^4.0.0",
+    "@nestjs/common": "^11.0.1",
+    "@nestjs/core": "^11.0.1",
+    "@nestjs/platform-express": "^11.0.1",
+    "axios": "^1.7.9",
+    "reflect-metadata": "^0.2.2",
+    "rxjs": "^7.8.1"
+  },
+  "devDependencies": {
+    "@eslint/eslintrc": "^3.2.0",
+    "@eslint/js": "^9.18.0",
+    "@nestjs/cli": "^11.0.0",
+    "@nestjs/schematics": "^11.0.0",
+    "@nestjs/testing": "^11.0.1",
+    "@swc/cli": "^0.6.0",
+    "@swc/core": "^1.10.7",
+    "@types/express": "^5.0.0",
+    "@types/jest": "^29.5.14",
+    "@types/node": "^22.10.7",
+    "@types/supertest": "^6.0.2",
+    "eslint": "^9.18.0",
+    "eslint-config-prettier": "^10.0.1",
+    "eslint-plugin-prettier": "^5.2.2",
+    "globals": "^15.14.0",
+    "jest": "^29.7.0",
+    "prettier": "^3.4.2",
+    "source-map-support": "^0.5.21",
+    "supertest": "^7.0.0",
+    "ts-jest": "^29.2.5",
+    "ts-loader": "^9.5.2",
+    "ts-node": "^10.9.2",
+    "tsconfig-paths": "^4.2.0",
+    "typescript": "^5.7.3",
+    "typescript-eslint": "^8.20.0"
+  },
+  "jest": {
+    "moduleFileExtensions": [
+      "js",
+      "json",
+      "ts"
+    ],
+    "rootDir": "src",
+    "testRegex": ".*\\.spec\\.ts$",
+    "transform": {
+      "^.+\\.(t|j)s$": "ts-jest"
+    },
+    "collectCoverageFrom": [
+      "**/*.(t|j)s"
+    ],
+    "coverageDirectory": "../coverage",
+    "testEnvironment": "node"
+  }
+}

src/app.module.ts

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+import { Module } from '@nestjs/common';
+import { HttpModule } from '@nestjs/axios';
+import { PrometheusService } from './prometheus.service';
+import { MetricsController } from './metrics.controller';
+
+@Module({
+  imports: [HttpModule], // Используем новый HttpModule
+  controllers: [MetricsController],
+  providers: [PrometheusService],
+})
+export class AppModule { }

src/main.ts

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+import { NestFactory } from '@nestjs/core';
+import { AppModule } from './app.module';
+
+async function bootstrap() {
+  const app = await NestFactory.create(AppModule);
+
+  app.enableCors({
+    origin: '*',
+    methods: 'GET,HEAD,PUT,PATCH,POST,DELETE',
+    allowedHeaders: 'Content-Type, Authorization',
+  });
+  await app.listen(process.env.PORT ?? 3000);
+}
+bootstrap();

src/metrics.controller.ts

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+import { Controller, Get, Query } from '@nestjs/common';
+import { PrometheusService } from './prometheus.service';
+
+@Controller('metrics')
+export class MetricsController {
+  constructor(private readonly prometheusService: PrometheusService) { }
+  //Получение конкретной метрики
+  @Get()
+  async getMetrics(@Query('metric') metric: string) {
+    return this.prometheusService.fetchMetrics(metric);
+  }
+  //  Получить список всех метрик
+  @Get('/all')
+  async getAllMetrics() {
+    return this.prometheusService.fetchAllMetrics();
+  }
+
+  //  Получить ВСЕ метрики со значениями
+  @Get('/all-values')
+  async getAllMetricsWithValues() {
+    return this.prometheusService.fetchAllMetricsWithValues();
+  }
+}

src/prometheus-metric.interface.ts

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+export interface PrometheusMetric {
+    __name__?: string;
+    [key: string]: string | number | undefined;
+    timestamp: number;
+    value: number;
+    type: string; // Тип метрики ("gauge", "counter", и т. д.)
+}

src/prometheus.service.ts

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+import { Injectable } from '@nestjs/common';
+import { HttpService } from '@nestjs/axios';
+import { lastValueFrom } from 'rxjs';
+import { PrometheusMetric } from './prometheus-metric.interface';
+
+@Injectable()
+export class PrometheusService {
+  private readonly prometheusUrl = 'http://192.168.2.37:9090/api/v1';
+
+  constructor(private readonly httpService: HttpService) { }
+
+  //Получаем тип метрики
+
+  async fetchMetricType(metric: string): Promise<string | null> {
+    try {
+      const response = await lastValueFrom(
+        this.httpService.get(`${this.prometheusUrl}/metadata`, {
+          params: { metric },
+        })
+      );
+
+      const metadata = response.data.data[metric];
+
+      if (metadata && metadata.length > 0) {
+        return metadata[0].type; // Возвращаем тип метрики
+      }
+
+      return null;
+    } catch (error) {
+      console.error(`Ошибка при получении типа метрики ${metric}:`, error);
+      return null;
+    }
+  }
+
+  //Данные конкретной метрики, включая ее тип
+
+  async fetchMetrics(metric: string): Promise<PrometheusMetric[]> {
+    const response = await lastValueFrom(
+      this.httpService.get(`${this.prometheusUrl}/query`, {
+        params: { query: metric },
+      })
+    );
+
+    const metricType = await this.fetchMetricType(metric); // Получаем тип
+
+    return response.data.data.result.map((entry): PrometheusMetric => ({
+      ...entry.metric,
+      timestamp: entry.value[0] * 1000, // Преобразуем в миллисекунды
+      value: parseFloat(entry.value[1]), // Преобразуем в число
+      type: metricType || 'unknown', // Добавляем тип метрики
+    }));
+  }
+
+  //Получаем данные всех метрик
+
+  async fetchAllMetrics(): Promise<string[]> {
+    const response = await lastValueFrom(
+      this.httpService.get(`${this.prometheusUrl}/label/__name__/values`)
+    );
+    return response.data.data; // Это массив с именами метрик
+  }
+
+  // Получаем список всех метрик
+
+  async fetchAllMetricsWithValues(): Promise<any[]> {
+    const metricNames = await this.fetchAllMetrics();
+    const promises = metricNames.map(async (metric) => {
+      const data = await this.fetchMetrics(metric);
+      return { metric, data };
+    });
+    return Promise.all(promises);
+  }
+}

tsconfig.build.json

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+{
+  "extends": "./tsconfig.json",
+  "exclude": ["node_modules", "test", "dist", "**/*spec.ts"]
+}

tsconfig.json

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+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "declaration": true,
+    "removeComments": true,
+    "emitDecoratorMetadata": true,
+    "experimentalDecorators": true,
+    "allowSyntheticDefaultImports": true,
+    "target": "ES2021",
+    "sourceMap": true,
+    "outDir": "./dist",
+    "baseUrl": "./",
+    "incremental": true,
+    "skipLibCheck": true,
+    "strictNullChecks": true,
+    "forceConsistentCasingInFileNames": true,
+    "noImplicitAny": false,
+    "strictBindCallApply": false,
+    "noFallthroughCasesInSwitch": false
+  }
+}