1.5.0

Closes #14

.eslintrc.json

@@ -0,0 +1,3 @@
+{
+  "extends": "@openstapps"
+}

.gitignore

@@ -92,4 +92,5 @@ docs/
 
 # Certificates
 *.crt
-*.key
+*.key
+test/certs

.gitlab-ci.yml

@@ -21,6 +21,12 @@ unit:
   stage: test
   script:
     - npm test
+  coverage: '/Statements[^:]*\:[^:]*\s+([\d\.]+)%/'
+  artifacts:
+    reports:
+      coverage_report:
+        coverage_format: cobertura
+        path: coverage/cobertura-coverage.xml
 
 audit:
   allow_failure: true
@@ -37,8 +43,7 @@ scheduled-audit:
     - npm audit --audit-level=high
   stage: audit
 
-image-test:
-  before_script: []
+docker image build:
   image: registry.gitlab.com/openstapps/projectmanagement/builder
   stage: test
   dependencies:
@@ -48,14 +53,11 @@ image-test:
   services:
     - docker:dind
   script:
-    - docker login -u gitlab-ci-token -p $CI_BUILD_TOKEN $CI_REGISTRY
     - docker build -t $CI_REGISTRY_IMAGE/$REGISTRY_BRANCH$CI_COMMIT_REF_NAME:latest .
-  except:
-    - /(^v[0-9]+\.[0-9]+\.[0-9]+$|^master$|^develop$)/
   tags:
     - docker
 
-image-build:
+docker image:
   image: registry.gitlab.com/openstapps/projectmanagement/builder
   stage: publish
   dependencies:

CHANGELOG.md

@@ -1,3 +1,49 @@
+## [1.4.1](https://gitlab.com/openstapps/proxy/compare/v1.4.0...v1.4.1) (2022-11-09)
+
+
+### Bug Fixes
+
+* include uri path in json log verbatim ([5f77877](https://gitlab.com/openstapps/proxy/commit/5f77877bb4239a437ff3f2eea1c0dfd51c7d4818))
+
+
+
+# [1.4.0](https://gitlab.com/openstapps/proxy/compare/v1.3.0...v1.4.0) (2022-11-09)
+
+
+### Features
+
+* add support for log aggregators ([8c49c31](https://gitlab.com/openstapps/proxy/commit/8c49c317603b1a2964708ed377a5a7c687f829cd))
+
+
+
+# [1.3.0](https://gitlab.com/openstapps/proxy/compare/v1.2.0...v1.3.0) (2022-08-22)
+
+
+
+# [1.2.0](https://gitlab.com/openstapps/proxy/compare/v1.1.0...v1.2.0) (2022-06-08)
+
+
+### Features
+
+* added prometheus metrics support ([5522ac5](https://gitlab.com/openstapps/proxy/commit/5522ac55ac00d4b809d942d0a8c58d15b0432fb8))
+* reload nginx on proxyconfig change ([1fcf734](https://gitlab.com/openstapps/proxy/commit/1fcf7340d49bde993b3acc7bdc90e6a637a05321))
+* support docker swarm deployments ([4bb46d8](https://gitlab.com/openstapps/proxy/commit/4bb46d8a06ff7829b6908bd03c1cf4240767fcc2))
+
+
+
+# [1.1.0](https://gitlab.com/openstapps/proxy/compare/v1.0.1...v1.1.0) (2022-03-10)
+
+
+
+## [1.0.1](https://gitlab.com/openstapps/proxy/compare/v1.0.0...v1.0.1) (2022-03-10)
+
+
+### Bug Fixes
+
+* nginx deleting its own conifg ([edbd739](https://gitlab.com/openstapps/proxy/commit/edbd739db995b72fd3f5b5bec7558442a329f719))
+
+
+
 # [1.0.0](https://gitlab.com/openstapps/proxy/compare/v0.4.0...v1.0.0) (2022-03-09)
 
 

Dockerfile

@@ -6,6 +6,7 @@ RUN apk update && \
     apk upgrade && \
     apk add openssl && \
     apk add nginx && \
+    apk add nginx-mod-http-vts && \
     rm -rf /var/cache/apk/*
 
 ADD . /app

config/default.ts

@@ -16,10 +16,12 @@
 import {ConfigFile} from '../src/common';
 
 const config: ConfigFile = {
-  activeVersions: ['1\\.0\\.\\d+','2\\.0\\.\\d+'],
+  activeVersions: ['1\\.0\\.\\d+', '2\\.0\\.\\d+'],
   hiddenRoutes: ['/bulk'],
+  logFormat: 'default',
+  metrics: false,
   outdatedVersions: ['0\\.8\\.\\d+', '0\\.5\\.\\d+', '0\\.6\\.\\d+', '0\\.7\\.\\d+'],
-  output: '/etc/nginx/conf.d/default.conf',
+  output: '/etc/nginx/http.d/default.conf',
   rateLimitAllowList: ['127.0.0.1/32'],
   sslFilePaths: {
     certificate: '/etc/nginx/certs/ssl.crt',

fixtures/cors.template

@@ -3,4 +3,3 @@ add_header 'Access-Control-Allow-Credentials' 'true';
 add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
 add_header 'Access-Control-Allow-Headers' 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,X-StApps-Version';
 add_header 'Access-Control-Max-Age' 1728000;
-add_header 'Content-Type' 'text/plain charset=UTF-8';

fixtures/logFormatters.template

@@ -0,0 +1,32 @@
+map $time_iso8601 $time_iso8601_dateTime {
+  ~([^+]+) $1;
+}
+map $time_iso8601 $time_iso8601_TZ {
+  ~\+([0-9:]+)$ $1;
+}
+map $msec $millisec {
+  ~\.([0-9]+)$ $1;
+}
+
+log_format json escape=json '{ "nginx_timestamp": "$time_iso8601_dateTime.$millisec+$time_iso8601_TZ", '
+       '"remote_addr": "$remote_addr", '
+       '"connection": "$connection", '
+       '"connection_requests": $connection_requests, '
+       '"pipe": "$pipe", '
+       '"body_bytes_sent": $body_bytes_sent, '
+       '"request_length": $request_length, '
+       '"request_time": $request_time, '
+       '"response_status": $status, '
+       '"request_uri": "$request_uri", '
+       '"request_method": "$request_method", '
+       '"host": "$host", '
+       '"upstream_cache_status": "$upstream_cache_status", '
+       '"upstream_addr": "$upstream_addr", '
+       '"http_x_forwarded_for": "$http_x_forwarded_for", '
+       '"http_referrer": "$http_referer", '
+       '"http_user_agent": "$http_user_agent", '
+       '"http_version": "$server_protocol", '
+       '"remote_user": "$remote_user", '
+       '"http_x_forwarded_proto": "$http_x_forwarded_proto", '
+       '"upstream_response_time": "$upstream_response_time", '
+       '"nginx_access": true }';

fixtures/metrics.template

@@ -0,0 +1,14 @@
+map $status $omitOKs {
+  default 1;
+  ~^[2][0][0] 0;
+}
+
+server {
+    listen 8080;
+    error_log stderr;
+    access_log /dev/stdout {{{ logFormat }}} if=$omitOKs;
+    location /metrics {
+        vhost_traffic_status_display;
+        vhost_traffic_status_display_format prometheus;
+    }
+}

nginx.conf

@@ -1,3 +1,5 @@
+load_module modules/ngx_http_vhost_traffic_status_module.so;
+
 worker_processes  1;
 
 error_log stderr;
@@ -9,6 +11,7 @@ events {
 }
 
 http {
+  vhost_traffic_status_zone;
   include       mime.types;
   default_type  application/octet-stream;
   access_log    /dev/stdout;
@@ -22,5 +25,5 @@ http {
   gzip              on;
   keepalive_timeout 65;
 
-  include /etc/nginx/conf.d/*;
+  include /etc/nginx/http.d/*;
 }

nginx.conf.template

@@ -1,3 +1,7 @@
+{{{ logFormatters }}}
+
+{{{ metrics }}}
+
 {{{ dockerVersionMap }}}
 
 # create a custom request limit zone which can handle 160,000 IP-Addresses at the same time
@@ -17,6 +21,10 @@ map $isRateLimited $rateLimit {
 limit_req_zone $rateLimit zone=customstappslimit:10m rate=20r/s;
 
 server {
+  charset utf-8;
+  error_log stderr;
+  access_log /dev/stdout {{{ logFormat }}};
+
   {{{ listener }}}
 
   {{{ visibleRoutes }}}

package.json

@@ -1,49 +1,60 @@
 {
   "name": "@openstapps/proxy",
-  "version": "1.0.1",
+  "version": "1.5.0",
   "description": "NGINX proxy that is dynamically configured by a Node.js script",
   "main": "./lib/cli.js",
   "dependencies": {
-    "@openstapps/logger": "0.8.0",
-    "@types/config": "0.0.41",
-    "@types/dockerode": "3.3.3",
-    "@types/node": "14.18.12",
+    "@openstapps/logger": "1.1.1",
+    "@types/config": "3.3.0",
+    "@types/dockerode": "3.3.12",
+    "@types/node": "14.18.24",
     "@types/sha1": "1.1.3",
-    "config": "3.3.7",
-    "dockerode": "3.3.1",
+    "config": "3.3.8",
+    "dockerode": "3.3.4",
     "is-cidr": "4.0.2",
     "mustache": "4.2.0",
-    "semver": "7.3.5"
+    "node-port-scanner": "3.0.1",
+    "semver": "7.3.8"
   },
   "devDependencies": {
-    "@openstapps/configuration": "0.29.0",
-    "@testdeck/mocha": "0.2.0",
-    "@types/chai": "4.3.0",
+    "@openstapps/configuration": "0.33.0",
+    "@openstapps/eslint-config": "1.1.0",
+    "@testdeck/mocha": "0.3.0",
+    "@types/chai": "4.3.4",
     "@types/chai-spies": "1.0.3",
-    "@types/mustache": "4.1.2",
-    "chai": "4.3.6",
+    "@types/mustache": "4.2.1",
+    "@types/proxyquire": "1.3.28",
+    "@typescript-eslint/eslint-plugin": "5.42.1",
+    "@typescript-eslint/parser": "5.42.1",
+    "chai": "4.3.7",
     "chai-spies": "1.0.0",
     "conventional-changelog-cli": "2.2.2",
-    "mocha": "9.2.1",
+    "eslint": "8.27.0",
+    "eslint-config-prettier": "8.5.0",
+    "eslint-plugin-jsdoc": "39.6.2",
+    "eslint-plugin-prettier": "4.2.1",
+    "eslint-plugin-unicorn": "44.0.2",
+    "mocha": "10.1.0",
     "nyc": "15.1.0",
     "prepend-file-cli": "1.0.6",
+    "prettier": "2.7.1",
+    "proxyquire": "2.1.3",
     "rimraf": "3.0.2",
-    "ts-node": "10.6.0",
-    "tslint": "6.1.3",
-    "typedoc": "0.22.12",
-    "typescript": "4.4.2"
+    "ts-node": "10.9.1",
+    "typedoc": "0.22.18",
+    "typescript": "4.4.4"
   },
   "scripts": {
-    "build": "npm run tslint && npm run compile",
+    "build": "npm run lint && npm run compile",
     "changelog": "conventional-changelog -p angular -i CHANGELOG.md -s -r 0 && git add CHANGELOG.md && git commit -m 'docs: update changelog'",
     "check-configuration": "openstapps-configuration",
     "compile": "rimraf lib && tsc && prepend lib/cli.js '#!/usr/bin/env node\n'",
     "documentation": "typedoc --includeVersion --out docs --readme README.md --entryPointStrategy expand src",
+    "lint": "eslint --ext .ts src/",
     "postversion": "npm run changelog",
     "prepublishOnly": "npm ci && npm run build",
     "preversion": "npm run prepublishOnly",
     "push": "git push && git push origin \"v$npm_package_version\"",
-    "tslint": "tslint -p tsconfig.json -c tslint.json 'src/**/*.ts'",
     "test": "nyc mocha --require ts-node/register 'test/**/*.spec.ts'"
   },
   "repository": {
@@ -83,6 +94,7 @@
     "lines": 95,
     "per-file": true,
     "reporter": [
+      "cobertura",
       "html",
       "text-summary"
     ],

src/cli.ts

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2022 StApps
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
  * published by the Free Software Foundation, either version 3 of the
@@ -17,16 +17,20 @@ import {Logger} from '@openstapps/logger';
 import {execSync} from 'child_process';
 import * as Dockerode from 'dockerode';
 import {render} from 'mustache';
-import {asyncReadFile, asyncWriteFile, configFile} from './common';
+import {asyncReadFile, asyncWriteFile} from './common';
 import {getContainers, getTemplateView} from './main';
 
+/* eslint-disable unicorn/prefer-module */
+
 // handle unhandled promise rejections
-process.on('unhandledRejection', async (error) => {
+process.on('unhandledRejection', async error => {
   await Logger.error(error);
   process.exit(1);
 });
 
 let containerHashCache = '';
+let configHashCache = '';
+const delay = (ms: number) => new Promise(resolve => setTimeout(resolve, ms));
 
 /**
  * Reads the container information from the docker socket and updates the nginx config if necessary
@@ -40,16 +44,25 @@ async function updateNginxConfig() {
     })
     .join(',');
 
+  delete require.cache[require.resolve('config')];
+  // eslint-disable-next-line @typescript-eslint/no-var-requires
+  const configFile = require('config');
+  const configHash = JSON.stringify(configFile);
+
   // if containers changed -> write config file, reload nginx
-  if (containerHash !== containerHashCache) {
+  if (containerHash !== containerHashCache || configHash !== configHashCache) {
     Logger.log('Generating new NGINX configuration');
+    Logger.log('Waiting for Docker network to settle...');
+    await delay(10_000);
 
     // render nginx config file
-    const nginxConfig = render(await asyncReadFile('nginx.conf.template', 'utf8'), await getTemplateView(containers));
-
-    Logger.log(`containers (${containerHash}) matched the configuration.`);
+    const nginxConfig = render(
+      await asyncReadFile('nginx.conf.template', 'utf8'),
+      await getTemplateView(containers),
+    );
 
     containerHashCache = containerHash;
+    configHashCache = configHash;
 
     Logger.log(`Writing new config file "${configFile.output}"`);
 
@@ -61,9 +74,10 @@ async function updateNginxConfig() {
     execSync('nginx -s reload');
   }
 
-  // tslint:disable-next-line:no-magic-numbers - set timeout to update configuration again in 30s
-  setTimeout(updateNginxConfig, 30000);
+  // set timeout to update configuration again in 30s
+  setTimeout(updateNginxConfig, 30_000);
 }
 
-// tslint:disable-next-line:no-floating-promises - start the process that checks the docker socket periodically
+// start the process that checks the docker socket periodically
+// eslint-disable-next-line unicorn/prefer-top-level-await
 updateNginxConfig();

src/common.ts

@@ -47,6 +47,20 @@ export interface SSLFilePaths {
   dhparam: string;
 }
 
+/**
+ * Supported log formats for config
+ */
+type SupportedLogFormatsKeys = 'default' | 'combined' | 'json';
+
+/**
+ * Map supported formats to stings used in template view
+ */
+export const SupportedLogFormats: {[key in SupportedLogFormatsKeys]: string} = {
+  default: 'combined',
+  combined: 'combined',
+  json: 'json',
+};
+
 /**
  * A representation of the config file
  */
@@ -59,12 +73,20 @@ export interface ConfigFile {
    * List of hidden routes
    */
   hiddenRoutes: string[];
+  /**
+   * Sets log format (default or json)
+   */
+  logFormat: SupportedLogFormatsKeys;
+  /**
+   * Enables metrics on /metrics route
+   */
+  metrics?: boolean;
   /**
    * List of outdated versions
    */
   outdatedVersions: string[];
   /**
-   * Output?! TODO
+   * Path the generated config will be written to
    */
   output: string;
   /**
@@ -93,6 +115,18 @@ export interface TemplateView {
    * Listener
    */
   listener: string;
+  /**
+   * Log format to use
+   */
+  logFormat: string;
+  /**
+   * Custom Log formatters
+   */
+  logFormatters: string;
+  /**
+   * Local server with listener for /metrics route
+   */
+  metrics: string;
   /**
    * Allow list for rate limiting
    */

src/main.ts

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2022 StApps
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
  * published by the Free Software Foundation, either version 3 of the
@@ -17,18 +17,25 @@ import {Logger} from '@openstapps/logger';
 import Dockerode from 'dockerode';
 import isCidr from 'is-cidr';
 import {render} from 'mustache';
-import {join} from 'path';
+import path from 'path';
 import * as semver from 'semver';
 import {
   asyncReadFile,
-  configFile,
+  ConfigFile,
   isFileType,
   protocolHardeningParameters,
   SSLFilePaths,
   sslHardeningParameters,
+  SupportedLogFormats,
   TemplateView,
 } from './common';
 
+/* eslint-disable unicorn/prefer-module */
+/* eslint-disable unicorn/no-await-expression-member */
+
+// eslint-disable-next-line @typescript-eslint/no-var-requires
+const nodePortScanner = require('node-port-scanner');
+
 /**
  * Checks if a ContainerInfo matches a name and version regex
  *
@@ -36,11 +43,20 @@ import {
  * @param versionRegex Version regex to check
  * @param container Container info for check
  */
-export function containerMatchesRegex(name: string, versionRegex: RegExp, container: Dockerode.ContainerInfo): boolean {
-  return typeof container.Labels['stapps.version'] === 'string'
-    && container.Labels['stapps.version'].match(versionRegex) !== null
-    && typeof container.Labels['com.docker.compose.service'] === 'string'
-    && container.Labels['com.docker.compose.service'] === name;
+export function containerMatchesRegex(
+  name: string,
+  versionRegex: RegExp,
+  container: Dockerode.ContainerInfo,
+): boolean {
+  return (
+    typeof container.Labels['stapps.version'] === 'string' &&
+    container.Labels['stapps.version'].match(versionRegex) !== null &&
+    ((typeof container.Labels['com.docker.compose.service'] === 'string' &&
+      container.Labels['com.docker.compose.service'] === name) ||
+      (typeof container.Labels['com.docker.stack.namespace'] === 'string' &&
+        container.Labels['com.docker.swarm.service.name'] ===
+          `${container.Labels['com.docker.stack.namespace']}_${name}`))
+  );
 }
 
 /**
@@ -53,14 +69,44 @@ export function containerMatchesRegex(name: string, versionRegex: RegExp, contai
  */
 export async function getGatewayOfStAppsBackend(container: Dockerode.ContainerInfo): Promise<string> {
   if (container.Ports.length === 0) {
-    await Logger.error(`Container ${container.Id} does not advertise any port.
+    await Logger.error(`Container ${container.Names[0]} does not advertise any port.
 Please expose a port if the container should be accessible by NGINX.`);
 
     return '';
   }
 
-  // ip:port
-  return `${container.Ports[0].IP}:${container.Ports[0].PublicPort}`;
+  // Basic Docker network
+  if (typeof container.Ports[0].IP !== 'undefined' && typeof container.Ports[0].PublicPort !== 'undefined') {
+    // ip:port
+    return `${container.Ports[0].IP}:${container.Ports[0].PublicPort}`;
+  }
+
+  // Docker Swarm network
+  if (
+    /* istanbul ignore next */
+    typeof container.NetworkSettings?.Networks?.ingress?.IPAddress !== 'undefined' &&
+    typeof container.Ports[0].PrivatePort !== 'undefined'
+  ) {
+    const port = container.Ports[0].PrivatePort;
+
+    // Get a routable network connection
+    for (const network in container.NetworkSettings.Networks) {
+      const scan = await nodePortScanner(container.NetworkSettings.Networks[network].IPAddress, [port]);
+
+      if ((scan.ports.open as Array<number>).includes(port)) {
+        Logger.info(
+          `${container.Names[0]} reachable via ${container.NetworkSettings.Networks[network].IPAddress}:${port}`,
+        );
+        return `${container.NetworkSettings.Networks[network].IPAddress}:${port}`;
+      }
+    }
+  }
+
+  await Logger.error(
+    `Couldn't infer ${container.Names[0]} network reachability. It's possible your current Docker network setup isn't supported yet.`,
+  );
+
+  return '';
 }
 
 /**
@@ -82,56 +128,71 @@ export async function generateUpstreamMap(
 
   let foundMatchingContainer = false;
 
+  // const backendContainer = containers.filter(container => container.Image.includes('backend'));
+  // // eslint-disable-next-line no-console
+  //console.log(JSON.stringify(backendContainer, undefined, 2));
+
   // active versions
-  result += (await Promise.all(
-    activeVersions
-      .map(async (activeVersionRegex) => {
+  result += (
+    await Promise.all(
+      activeVersions.map(async activeVersionRegex => {
         const upstreamName = activeVersionRegex.replace(/[\\|.+]/g, '_');
 
-        let activeBackends = containers.filter((container) => {
+        let activeBackends = containers.filter(container => {
           return containerMatchesRegex('backend', new RegExp(activeVersionRegex), container);
         });
 
         // .Labels['stapps.version'] is available
         if (activeBackends.length > 0) {
-
-          activeBackends = activeBackends.sort((a, b) => semver.rcompare(a.Labels['stapps.version'],b.Labels['stapps.version']));
-          const activeBackendsVersions = activeBackends.map((container) => container.Labels['stapps.version'])
-                                                       // tslint:disable-next-line: strict-boolean-expressions
-                                                       .reduce((map, e) => map.set(e, (map.get(e) || 0) + 1), new Map<string, number>());
+          activeBackends = activeBackends.sort((a, b) =>
+            semver.rcompare(a.Labels['stapps.version'], b.Labels['stapps.version']),
+          );
+          const activeBackendsVersions = activeBackends
+            .map(container => container.Labels['stapps.version'])
+            // eslint-disable-next-line unicorn/no-array-reduce
+            .reduce(
+              (map, element) => map.set(element, (map.get(element) || 0) + 1),
+              new Map<string, number>(),
+            );
           for (const [version, occurrences] of activeBackendsVersions) {
             if (occurrences > 1) {
-              await Logger.error(`Omitting running version ${version} ! Multiple backends with this exact version are running`);
-              activeBackends = activeBackends.filter((container) => container.Labels['stapps.version'] !== version);
+              await Logger.error(
+                `Omitting running version ${version} ! Multiple backends with this exact version are running.`,
+              );
+              activeBackends = activeBackends.filter(
+                container => container.Labels['stapps.version'] !== version,
+              );
             }
           }
 
-          if (activeBackends.length !== 0) {
-            // not only dublicates
+          if (activeBackends.length > 0) {
+            // not only duplicates
             foundMatchingContainer = true;
 
-            const gateWayOfContainer = await getGatewayOfStAppsBackend(activeBackends[0]);
+            const gatewayOfContainer = await getGatewayOfStAppsBackend(activeBackends[0]);
 
-            if (gateWayOfContainer.length !== 0) {
-              upstreams += `\nupstream ${upstreamName} {\n  server ${gateWayOfContainer};\n}`;
+            if (gatewayOfContainer.length > 0) {
+              upstreams += `\nupstream ${upstreamName} {\n  server ${gatewayOfContainer};\n}`;
 
               return `  \"~${activeVersionRegex}\" ${upstreamName};\n`;
             }
           }
         }
-        await Logger.error('No backend for version', activeVersionRegex, 'found');
+        Logger.warn('No backend for version', activeVersionRegex, 'found');
 
         return `  \"~${activeVersionRegex}\" unavailable;\n`;
       }),
-  )).join('');
+    )
+  ).join('');
 
   // outdated versions
   result += outdatedVersions
-    .map((outdatedVersionRegex) => {
+    .map(outdatedVersionRegex => {
       return `  \"~${outdatedVersionRegex}\" outdated;`;
     })
-    .join('');
+    .join('\n');
 
+  // eslint-disable-next-line prettier/prettier
   result += '\n\}';
 
   if (!foundMatchingContainer) {
@@ -149,19 +210,24 @@ export async function generateUpstreamMap(
 export function generateListener(sslFilePaths: SSLFilePaths) {
   let listener = '';
 
-  if (typeof sslFilePaths !== 'undefined' &&
-    typeof sslFilePaths.certificate !== 'undefined' && isFileType(sslFilePaths.certificate,'crt') &&
-    typeof sslFilePaths.certificateChain !== 'undefined' && isFileType(sslFilePaths.certificateChain,'crt') &&
-    typeof sslFilePaths.certificateKey !== 'undefined' && isFileType(sslFilePaths.certificateKey,'key') &&
-    typeof sslFilePaths.dhparam !== 'undefined' && isFileType(sslFilePaths.dhparam,'pem')
+  if (
+    typeof sslFilePaths !== 'undefined' &&
+    typeof sslFilePaths.certificate !== 'undefined' &&
+    isFileType(sslFilePaths.certificate, 'crt') &&
+    typeof sslFilePaths.certificateChain !== 'undefined' &&
+    isFileType(sslFilePaths.certificateChain, 'crt') &&
+    typeof sslFilePaths.certificateKey !== 'undefined' &&
+    isFileType(sslFilePaths.certificateKey, 'key') &&
+    typeof sslFilePaths.dhparam !== 'undefined' &&
+    isFileType(sslFilePaths.dhparam, 'pem')
   ) {
     // https listener
-    listener = `listen 443 ssl default_server;
-ssl_certificate ${sslFilePaths.certificate};
-ssl_certificate_key ${sslFilePaths.certificateKey};
-ssl_trusted_certificate ${sslFilePaths.certificateChain};
-ssl_dhparam ${sslFilePaths.dhparam};
-${sslHardeningParameters}`;
+    listener = `    listen 443 ssl default_server;
+    ssl_certificate ${sslFilePaths.certificate};
+    ssl_certificate_key ${sslFilePaths.certificateKey};
+    ssl_trusted_certificate ${sslFilePaths.certificateChain};
+    ssl_dhparam ${sslFilePaths.dhparam};
+    ${sslHardeningParameters}`;
   } else {
     // default http listener
     listener = 'listen 80 default_server;';
@@ -176,6 +242,19 @@ ${protocolHardeningParameters}
   return listener;
 }
 
+/**
+ * Reads predefined server entry with metrics location
+ */
+export async function generateMetricsServer(logFormat: string, enableMetrics?: boolean): Promise<string> {
+  if (!enableMetrics) {
+    return '';
+  }
+
+  return renderTemplate(path.join('fixtures', 'metrics.template'), {
+    logFormat: logFormat,
+  });
+}
+
 /**
  * Render a mustache template file with given view object
  *
@@ -194,7 +273,8 @@ async function renderTemplate(path: string, view: unknown): Promise<string> {
  * @param entries Allow list entries that should be in CIDR notation
  */
 function generateRateLimitAllowList(entries: string[]): string {
-  return entries.filter(entry => isCidr(entry))
+  return entries
+    .filter(entry => isCidr(entry))
     .map(entry => `${entry} 0;`)
     .join('\n');
 }
@@ -205,28 +285,47 @@ function generateRateLimitAllowList(entries: string[]): string {
  * @param containers List of container info
  */
 export async function getTemplateView(containers: Dockerode.ContainerInfo[]): Promise<TemplateView> {
+  delete require.cache[require.resolve('config')];
+  // eslint-disable-next-line @typescript-eslint/no-var-requires
+  const config = require('config');
+  const configFile = config as ConfigFile;
+
   const cors = await asyncReadFile('./fixtures/cors.template', 'utf8');
 
-  const visibleRoutesPromises = ['/'].map(async (route) => {
-    return renderTemplate(join('fixtures', 'visibleRoute.template'), {
+  const visibleRoutesPromises = ['/'].map(async route => {
+    return renderTemplate(path.join('fixtures', 'visibleRoute.template'), {
       cors,
       route,
     });
   });
 
-  const hiddenRoutesPromises = configFile.hiddenRoutes.map(async (route) => {
-    return renderTemplate(join('fixtures', 'hiddenRoute.template'), {
+  const hiddenRoutesPromises = configFile.hiddenRoutes.map(async route => {
+    return renderTemplate(path.join('fixtures', 'hiddenRoute.template'), {
       cors,
       route,
     });
   });
 
+  const logFormattingPromise = renderTemplate(path.join('fixtures', 'logFormatters.template'), {});
+
+  const logFormat =
+    configFile.logFormat in SupportedLogFormats
+      ? SupportedLogFormats[configFile.logFormat]
+      : SupportedLogFormats.default;
+
   return {
-    dockerVersionMap: await generateUpstreamMap(configFile.activeVersions, configFile.outdatedVersions, containers),
+    dockerVersionMap: await generateUpstreamMap(
+      configFile.activeVersions,
+      configFile.outdatedVersions,
+      containers,
+    ),
     hiddenRoutes: (await Promise.all(hiddenRoutesPromises)).join(''),
     listener: generateListener(configFile.sslFilePaths),
+    logFormat: logFormat,
+    logFormatters: await logFormattingPromise,
+    metrics: await generateMetricsServer(logFormat, configFile.metrics),
     rateLimitAllowList: generateRateLimitAllowList(configFile.rateLimitAllowList),
-    staticRoute: await renderTemplate(join('fixtures', 'staticRoute.template'), {cors}),
+    staticRoute: await renderTemplate(path.join('fixtures', 'staticRoute.template'), {cors}),
     visibleRoutes: (await Promise.all(visibleRoutesPromises)).join(''),
   };
 }
@@ -236,7 +335,9 @@ export async function getTemplateView(containers: Dockerode.ContainerInfo[]): Pr
  *
  * @param pathToDockerSocket Path to docker socket
  */
-export async function getContainers(pathToDockerSocket = '/var/run/docker.sock'): Promise<Dockerode.ContainerInfo[]> {
+export async function getContainers(
+  pathToDockerSocket = '/var/run/docker.sock',
+): Promise<Dockerode.ContainerInfo[]> {
   const docker = new Dockerode({
     socketPath: pathToDockerSocket,
   });

test/main.spec.ts

@@ -24,12 +24,23 @@ import {expect} from 'chai';
 import chaiSpies from 'chai-spies';
 import {ContainerInfo} from 'dockerode';
 import {slow, suite, test, timeout} from '@testdeck/mocha';
-import {sslHardeningParameters, protocolHardeningParameters, SSLFilePaths } from './../src/common';
-import {containerMatchesRegex, generateUpstreamMap, getGatewayOfStAppsBackend, getTemplateView, generateListener, getContainers} from '../src/main';
-import { resolve } from 'path';
-import { mkdirSync, writeFileSync, unlinkSync, rmdirSync } from 'fs';
+import {sslHardeningParameters, protocolHardeningParameters, SSLFilePaths} from './../src/common';
+import {
+  containerMatchesRegex,
+  generateUpstreamMap,
+  getGatewayOfStAppsBackend,
+  getTemplateView,
+  generateListener,
+  generateMetricsServer,
+  getContainers,
+} from '../src/main';
+import {resolve} from 'path';
+import {mkdirSync, writeFileSync, unlinkSync, rmdirSync} from 'fs';
+import proxyquire from 'proxyquire';
 
-process.on('unhandledRejection', async (error) => {
+proxyquire.callThru().preserveCache();
+
+process.on('unhandledRejection', async error => {
   await Logger.error(error);
 
   process.exit(1);
@@ -40,9 +51,9 @@ chai.use(chaiSpies);
 
 @suite(timeout(1000), slow(500))
 export class MainSpec {
-  static anyContainerWithExposedPorts: ContainerInfo = {
+  static 'anyContainerWithExposedPorts': ContainerInfo = {
     Command: 'sh',
-    Created: 1524669882,
+    Created: 1_524_669_882,
     HostConfig: {
       NetworkMode: 'default',
     },
@@ -51,9 +62,7 @@ export class MainSpec {
     ImageID: 'sha256:ef9f0c8c4b6f99dd208948c7aae1d042590aa18e05ebeae4f586e4b4beebeac9',
     Labels: {},
     Mounts: [],
-    Names: [
-      '/container_name_1',
-    ],
+    Names: ['/container_name_1'],
     NetworkSettings: {
       Networks: {
         bridge: {
@@ -84,7 +93,7 @@ export class MainSpec {
     Status: 'Up 3 minutes',
   };
 
-  static backendContainerWithExposedPorts: ContainerInfo = {
+  static 'backendContainerWithExposedPorts': ContainerInfo = {
     Command: 'node ./bin/www',
     Created: 1524669882,
     HostConfig: {
@@ -103,9 +112,7 @@ export class MainSpec {
       'stapps.version': '1.0.0',
     },
     Mounts: [],
-    Names: [
-      '/deployment_backend_1',
-    ],
+    Names: ['/deployment_backend_1'],
     NetworkSettings: {
       Networks: {
         deployment_default: {
@@ -136,36 +143,87 @@ export class MainSpec {
     Status: 'Up 3 minutes',
   };
 
-  static sandbox = chai.spy.sandbox();
+  static 'swarmBackendContainerWithExposedPorts': ContainerInfo = {
+    Command: 'node ./bin/www',
+    Created: 1524669882,
+    HostConfig: {
+      NetworkMode: 'swarm_default',
+    },
+    Id: 'e3d3f4d18aceac2780bdb95523845d066ed25c04fc65168a5ddbd37a85671bb7',
+    Image: 'registry.gitlab.com/openstapps/backend/b-tu-typescript-refactor-for-new-tslint-config',
+    ImageID: 'sha256:ef9f0c8c4b6f99dd208948c7aae1d042590aa18e05ebeae4f586e4b4beebeac9',
+    Labels: {
+      'com.docker.compose.config-hash': '91c6e0cebad15951824162c93392b6880b69599692f07798ae8de659c1616a03',
+      'com.docker.compose.container-number': '1',
+      'com.docker.compose.oneoff': 'False',
+      'com.docker.stack.namespace': 'deployment',
+      'com.docker.swarm.service.name': 'deployment_backend',
+      'com.docker.compose.version': '1.21.0',
+      'stapps.version': '1.0.0',
+    },
+    Mounts: [],
+    Names: ['/deployment_backend_1'],
+    NetworkSettings: {
+      Networks: {
+        ingress: {
+          Aliases: null,
+          EndpointID: 'da17549a086ff2c9f622e80de833e6f334afda52c8f07080428640c1716dcd14',
+          Gateway: '172.18.0.1',
+          GlobalIPv6Address: '',
+          GlobalIPv6PrefixLen: 0,
+          IPAMConfig: null,
+          IPAddress: '172.18.0.3',
+          IPPrefixLen: 16,
+          IPv6Gateway: '',
+          Links: null,
+          MacAddress: '03:41:ac:11:00:23',
+          NetworkID: '947ea5247cc7429e1fdebd5404fa4d15f7c05e6765f2b93ddb3bdb6aaffd1193',
+        },
+      },
+    },
+    Ports: [
+      {
+        IP: 'delete me',
+        PrivatePort: 3000,
+        PublicPort: 3000,
+        Type: 'tcp',
+      },
+    ],
+    State: 'running',
+    Status: 'Up 3 minutes',
+  };
 
-  before() {
+  static 'sandbox' = chai.spy.sandbox();
+
+  'before'() {
     MainSpec.sandbox.restore();
   }
 
   @test
   'check if container does not match any container'() {
-    expect(containerMatchesRegex(
-      'anyName',
-      new RegExp('d+'),
-      MainSpec.anyContainerWithExposedPorts),
+    expect(
+      containerMatchesRegex('anyName', new RegExp('d+'), MainSpec.anyContainerWithExposedPorts),
     ).to.be.equal(false);
   }
 
   @test
   'check if container does not match if version is incorrect'() {
-    expect(containerMatchesRegex(
-      'backend',
-      new RegExp('1\\.4\\.\\d+'),
-      MainSpec.backendContainerWithExposedPorts),
+    expect(
+      containerMatchesRegex('backend', new RegExp('1\\.4\\.\\d+'), MainSpec.backendContainerWithExposedPorts),
     ).to.be.equal(false);
   }
 
   @test
   'check if container matches'() {
-    expect(containerMatchesRegex(
-      'backend',
-      new RegExp('1\\.0\\.\\d+'),
-      MainSpec.backendContainerWithExposedPorts),
+    expect(
+      containerMatchesRegex('backend', new RegExp('1\\.0\\.\\d+'), MainSpec.backendContainerWithExposedPorts),
+    ).to.be.equal(true);
+    expect(
+      containerMatchesRegex(
+        'backend',
+        new RegExp('1\\.0\\.\\d+'),
+        MainSpec.swarmBackendContainerWithExposedPorts,
+      ),
     ).to.be.equal(true);
   }
 
@@ -183,27 +241,98 @@ export class MainSpec {
     const containerWithoutPorts: Partial<ContainerInfo> = {
       Id: 'Foo',
       Ports: [],
+      Names: ['/container_name_1'],
     };
 
     expect(await getGatewayOfStAppsBackend(containerWithoutPorts as ContainerInfo)).to.be.equal('');
-    expect(spy.__spy.calls[0][0]).to.contain('Container Foo does not advertise any port.');
+    expect(spy.__spy.calls[0][0]).to.contain('Container /container_name_1 does not advertise any port.');
   }
 
   @test
   async 'get gateway of backend container without ports'() {
-    expect(await getGatewayOfStAppsBackend(MainSpec.backendContainerWithExposedPorts)).to.be.equal('127.0.0.1:3000');
+    expect(await getGatewayOfStAppsBackend(MainSpec.backendContainerWithExposedPorts)).to.be.equal(
+      '127.0.0.1:3000',
+    );
+  }
+
+  @test
+  async 'get gateway of backend container within docker swarm'() {
+    const backendContainer = MainSpec.swarmBackendContainerWithExposedPorts as any;
+    delete backendContainer.Ports[0].IP;
+
+    const main = proxyquire('../src/main', {
+      'node-port-scanner': (_host: unknown, _ports: unknown) => {
+        return new Promise((resolve, _reject) => {
+          resolve({
+            ports: {
+              open: [3000],
+            },
+          });
+        });
+      },
+    });
+    expect(await main.getGatewayOfStAppsBackend(backendContainer)).to.be.equal('172.18.0.3:3000');
+  }
+
+  @test
+  async 'fail to get gateway of backend container if unreachable'() {
+    const backendContainer = MainSpec.swarmBackendContainerWithExposedPorts as any;
+    delete backendContainer.Ports[0].IP;
+
+    const spy = MainSpec.sandbox.on(console, 'error', () => {
+      // noop
+    });
+
+    const main = proxyquire('../src/main', {
+      'node-port-scanner': (_host: unknown, _ports: unknown) => {
+        return new Promise((resolve, _reject) => {
+          resolve({
+            ports: {
+              open: [],
+            },
+          });
+        });
+      },
+    });
+
+    expect(await main.getGatewayOfStAppsBackend(MainSpec.swarmBackendContainerWithExposedPorts)).to.be.equal(
+      '',
+    );
+    expect(spy.__spy.calls[0][0]).to.contain(
+      "It's possible your current Docker network setup isn't supported yet.",
+    );
+  }
+
+  @test
+  async 'fail to get gateway of backend container network mode is unsupported'() {
+    const backendContainer = MainSpec.swarmBackendContainerWithExposedPorts as any;
+    delete backendContainer.Ports[0].IP;
+    delete backendContainer.Ports[0].PublicPort;
+    delete backendContainer.Ports[0].PrivatePort;
+
+    const spy = MainSpec.sandbox.on(console, 'error', () => {
+      // noop
+    });
+
+    expect(await getGatewayOfStAppsBackend(MainSpec.swarmBackendContainerWithExposedPorts)).to.be.equal('');
+    expect(spy.__spy.calls[0][0]).to.contain(
+      "It's possible your current Docker network setup isn't supported yet.",
+    );
   }
 
   @test
   async 'upstream map calls logger error when no matching container is found'() {
-    const spy = MainSpec.sandbox.on(console, 'error', () => {
+    const spy = MainSpec.sandbox.on(console, 'warn', () => {
+      // noop
     });
 
-    expect(await generateUpstreamMap(
-      ['0\\.8\\.\\d+'],
-      ['1\\.1\\.\\d+'],
-      [MainSpec.backendContainerWithExposedPorts],
-    )).to.be.equal(`map $http_x_stapps_version $proxyurl {
+    expect(
+      await generateUpstreamMap(
+        ['0\\.8\\.\\d+'],
+        ['1\\.1\\.\\d+'],
+        [MainSpec.backendContainerWithExposedPorts],
+      ),
+    ).to.be.equal(`map $http_x_stapps_version $proxyurl {
   default unsupported;
   "~0\\.8\\.\\d+" unavailable;
   "~1\\.1\\.\\d+" outdated;
@@ -215,11 +344,13 @@ export class MainSpec {
 
   @test
   async 'upstream map with one active version and no outdated ones'() {
-    expect(await generateUpstreamMap(
-      ['1\\.0\\.\\d+'],
-      ['0\\.8\\.\\d+'],
-      [MainSpec.backendContainerWithExposedPorts],
-    )).to.be.equal(`map $http_x_stapps_version $proxyurl {
+    expect(
+      await generateUpstreamMap(
+        ['1\\.0\\.\\d+'],
+        ['0\\.8\\.\\d+'],
+        [MainSpec.backendContainerWithExposedPorts],
+      ),
+    ).to.be.equal(`map $http_x_stapps_version $proxyurl {
   default unsupported;
   "~1\\.0\\.\\d+" 1__0___d_;
   "~0\\.8\\.\\d+" outdated;
@@ -255,33 +386,43 @@ Please check if docker is running and Node.js can access the docker socket (/var
 
   @test
   async 'get template view'() {
-
     try {
-      let containersWithSameVersion = [MainSpec.backendContainerWithExposedPorts, MainSpec.backendContainerWithExposedPorts];
+      let containersWithSameVersion = [
+        MainSpec.backendContainerWithExposedPorts,
+        MainSpec.backendContainerWithExposedPorts,
+      ];
       await getTemplateView(containersWithSameVersion);
       return false;
     } catch (e) {
-      expect((e as Error).message).to.equal(
-      `Multiple backends for one version found.`);
+      expect((e as Error).message).to.equal(`Multiple backends for one version found.`);
     }
 
     return true;
   }
 
   @test
-  'create listener faulty config'() {
+  async 'include metrics config'() {
+    expect(await generateMetricsServer('test', true)).length.to.be.greaterThan(1);
+  }
 
-    expect(generateListener({
-      certificate: 'faultyTest',
-      certificateChain: 'faultyTest',
-      certificateKey: 'faultyTest',
-      dhparam: 'faultyTest',
-    })).to
-    .equal(`listen 80 default_server;
+  @test
+  async 'omit metrics config'() {
+    expect(await generateMetricsServer('test', false)).to.equal('');
+  }
+
+  @test
+  'create listener faulty config'() {
+    expect(
+      generateListener({
+        certificate: 'faultyTest',
+        certificateChain: 'faultyTest',
+        certificateKey: 'faultyTest',
+        dhparam: 'faultyTest',
+      }),
+    ).to.equal(`listen 80 default_server;
 
 ${protocolHardeningParameters}
 `);
-
   }
 
   @test
@@ -294,10 +435,10 @@ ${protocolHardeningParameters}
     const certificateChainFile = resolve(testCertDir, 'chain.crt');
     const dhparamFile = resolve(testCertDir, 'dhparam.pem');
 
-    writeFileSync(certificateFile,'Test');
-    writeFileSync(certificateKeyFile,'Test');
-    writeFileSync(certificateChainFile,'Test');
-    writeFileSync(dhparamFile,'Test');
+    writeFileSync(certificateFile, 'Test');
+    writeFileSync(certificateKeyFile, 'Test');
+    writeFileSync(certificateChainFile, 'Test');
+    writeFileSync(dhparamFile, 'Test');
 
     const sslFilePaths: SSLFilePaths = {
       certificate: certificateFile,
@@ -306,12 +447,12 @@ ${protocolHardeningParameters}
       dhparam: dhparamFile,
     };
 
-    expect(generateListener(sslFilePaths)).to.equal(`listen 443 ssl default_server;
-ssl_certificate ${sslFilePaths.certificate};
-ssl_certificate_key ${sslFilePaths.certificateKey};
-ssl_trusted_certificate ${sslFilePaths.certificateChain};
-ssl_dhparam ${sslFilePaths.dhparam};
-${sslHardeningParameters}
+    expect(generateListener(sslFilePaths)).to.equal(`    listen 443 ssl default_server;
+    ssl_certificate ${sslFilePaths.certificate};
+    ssl_certificate_key ${sslFilePaths.certificateKey};
+    ssl_trusted_certificate ${sslFilePaths.certificateChain};
+    ssl_dhparam ${sslFilePaths.dhparam};
+    ${sslHardeningParameters}
 
 ${protocolHardeningParameters}
 `);

tslint.json

@@ -1,3 +0,0 @@
-{
-  "extends": "./node_modules/@openstapps/configuration/tslint.json"
-}