Merge branch 'feature/add-logging' into 'develop'

Feature/add logging

See merge request ecentrics/concordia!18

docker/Makefile

@@ -72,21 +72,21 @@ run-app-host-chain:
 build-contracts-provider:
 	@docker build ../ -f ./concordia-contracts-provider/Dockerfile -t ecentrics/concordia-contracts-provider --build-arg TZ=Europe/Athens
 run-contracts-provider-staging:
-	@docker run -d -v ${CONTRACTS_PROVIDER_VOLUMES}/contracts:/mnt/concordia/contracts --env-file=./env/contracts-provider.env -p 8400:8400 --name concordia-contracts-provider --net=concordia_concordia_network ecentrics/concordia-contracts-provider:latest
+	@docker run -d -v ${CONTRACTS_PROVIDER_VOLUMES}/contracts:/mnt/concordia/contracts -v ${CONTRACTS_PROVIDER_VOLUMES}/contracts:/mnt/concordia/logs --env-file=./env/contracts-provider.env -p 8400:8400 --name concordia-contracts-provider --net=concordia_concordia_network ecentrics/concordia-contracts-provider:latest
 run-contracts-provider:
-	@docker run -d -v ${CONTRACTS_PROVIDER_VOLUMES}/contracts:/mnt/concordia/contracts --env-file=./env/contracts-provider.env -e NODE_ENV=production -p 8400:8400 --name concordia-contracts-provider --net=concordia_concordia_network ecentrics/concordia-contracts-provider:latest
+	@docker run -d -v ${CONTRACTS_PROVIDER_VOLUMES}/contracts:/mnt/concordia/contracts -v ${CONTRACTS_PROVIDER_VOLUMES}/contracts:/mnt/concordia/logs --env-file=./env/contracts-provider.env -e NODE_ENV=production -p 8400:8400 --name concordia-contracts-provider --net=concordia_concordia_network ecentrics/concordia-contracts-provider:latest
 
 # Pinner targets
 build-pinner:
 	@docker build ../ -f ./concordia-pinner/Dockerfile -t ecentrics/concordia-pinner --build-arg TZ=Europe/Athens
 run-pinner-staging:
-	@docker run -d -v ${PINNER_VOLUMES}/orbitdb:/mnt/concordia/orbitdb --env-file=./env/pinner.env -p 4444:4444 --name concordia-pinner --net=concordia_concordia_network ecentrics/concordia-pinner:latest
+	@docker run -d -v ${PINNER_VOLUMES}/orbitdb:/mnt/concordia/orbitdb -v ${PINNER_VOLUMES}:/mnt/concordia/logs --env-file=./env/pinner.env -p 4444:4444 --name concordia-pinner --net=concordia_concordia_network ecentrics/concordia-pinner:latest
 run-pinner:
-	@docker run -d -v ${PINNER_VOLUMES}/orbitdb:/mnt/concordia/orbitdb --env-file=./env/pinner.env -e NODE_ENV=production -p 4444:4444 --name concordia-pinner --net=concordia_concordia_network ecentrics/concordia-pinner:latest
+	@docker run -d -v ${PINNER_VOLUMES}/orbitdb:/mnt/concordia/orbitdb -v ${PINNER_VOLUMES}:/mnt/concordia/logs --env-file=./env/pinner.env -e NODE_ENV=production -p 4444:4444 --name concordia-pinner --net=concordia_concordia_network ecentrics/concordia-pinner:latest
 run-pinner-staging-host:
-	@docker run -d -v ${PINNER_VOLUMES}/orbitdb:/mnt/concordia/orbitdb --env-file=./env/pinner.env --net=host --name concordia-pinner ecentrics/concordia-pinner:latest
+	@docker run -d -v ${PINNER_VOLUMES}/orbitdb:/mnt/concordia/orbitdb -v ${PINNER_VOLUMES}:/mnt/concordia/logs --env-file=./env/pinner.env --net=host --name concordia-pinner ecentrics/concordia-pinner:latest
 run-pinner-host:
-	@docker run -d -v ${PINNER_VOLUMES}/orbitdb:/mnt/concordia/orbitdb --env-file=./env/pinner.env -e NODE_ENV=production --net=host --name concordia-pinner ecentrics/concordia-pinner:latest
+	@docker run -d -v ${PINNER_VOLUMES}/orbitdb:/mnt/concordia/orbitdb -v ${PINNER_VOLUMES}:/mnt/concordia/logs --env-file=./env/pinner.env -e NODE_ENV=production --net=host --name concordia-pinner ecentrics/concordia-pinner:latest
 
 # Other
 clean-images:

docker/env/contracts-provider.env

@@ -1 +1,2 @@
 UPLOAD_CONTRACTS_DIRECTORY=/mnt/concordia/contracts/
+LOGS_PATH=/mnt/concordia/logs/

docker/env/pinner.env

@@ -1,5 +1,6 @@
 USE_EXTERNAL_CONTRACTS_PROVIDER=true
 ORBIT_DIRECTORY=/mnt/concordia/orbitdb
+LOGS_PATH=/mnt/concordia/logs/
 
 CONTRACTS_PROVIDER_HOST=concordia-contracts-provider
 CONTRACTS_PROVIDER_PORT=8400

packages/concordia-app/.eslintrc.js

@@ -41,7 +41,7 @@ module.exports = {
         'react-hooks/exhaustive-deps': 'error',
         'max-len': ['warn', {'code': 120, 'tabWidth': 4}],
         'no-unused-vars': 'warn',
-        'no-console': 'warn',
+        'no-console': ['warn', {allow: ['warn', 'error']}],
         'no-shadow': 'warn',
         "no-multi-str": "warn",
         "jsx-a11y/label-has-associated-control": [2, {

packages/concordia-app/src/components/ClearDatabasesModal/index.jsx

@@ -36,7 +36,7 @@ const ClearDatabasesModal = (props) => {
     purgeIndexedDBs()
       .then(() => {
         onDatabasesCleared();
-      }).catch((reason) => console.log(reason));
+      }).catch((reason) => console.error(reason));
   }, [onDatabasesCleared]);
 
   const onCancelTry = useCallback(() => {

packages/concordia-app/src/components/PostCreate/index.jsx

@@ -95,7 +95,7 @@ const PostCreate = (props) => {
             setCreatePostCacheSendStackId('');
           })
           .catch((reason) => {
-            console.log(reason);
+            console.error(reason);
           });
 
         setStoringPost(true);

packages/concordia-app/src/views/Profile/GeneralTab/EditInformationModal/index.jsx

@@ -124,7 +124,7 @@ const EditInformationModal = (props) => {
         // TODO: display a message
       })
       .catch((reason) => {
-        console.log(reason);
+        console.error(reason);
       });
 
     if (usernameInput !== initialUsername) {

packages/concordia-app/src/views/Register/PersonalInformationStep/index.jsx

@@ -94,7 +94,7 @@ const PersonalInformationStep = (props) => {
         Promise.resolve())
         .then(() => pushNextStep())
         .catch((reason) => {
-          console.log(reason);
+          console.error(reason);
         });
     }
   }, [error, locationInput, profilePictureInput, pushNextStep]);

packages/concordia-app/src/views/Topic/TopicCreate/index.jsx

@@ -80,7 +80,7 @@ const TopicCreate = (props) => {
             history.push(`/topics/${topicId}`);
           })
           .catch((reason) => {
-            console.log(reason);
+            console.error(reason);
           });
       }
     }

packages/concordia-contracts-provider/.gitignore

@@ -11,6 +11,7 @@
 
 # Logs
 /log
+/logs
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*

packages/concordia-contracts-provider/package.json

@@ -17,8 +17,10 @@
     "express-async-handler": "^1.1.4",
     "helmet": "^4.4.1",
     "lodash": "^4.17.20",
+    "morgan": "^1.10.0",
     "multer": "^1.4.2",
-    "multiparty": "^4.2.2"
+    "multiparty": "^4.2.2",
+    "winston": "^3.3.3"
   },
   "devDependencies": {
     "eslint": "^7.19.0",

packages/concordia-contracts-provider/src/constants.js

@@ -2,8 +2,10 @@ import path from 'path';
 
 const UPLOAD_CONTRACTS_DIRECTORY = path.join(__dirname, '..', 'contracts-uploads');
 const CORS_ALLOWED_ORIGINS = ['http://127.0.0.1:7000', 'http://localhost:7000'];
+const LOGS_PATH = path.join(__dirname, '..', 'logs');
 
 export default {
   uploadsDirectory: UPLOAD_CONTRACTS_DIRECTORY,
   corsAllowedOrigins: CORS_ALLOWED_ORIGINS,
+  logsPath: LOGS_PATH,
 };

packages/concordia-contracts-provider/src/controllers/download.js

@@ -1,6 +1,7 @@
 import { promises as fs, constants } from 'fs';
 import path from 'path';
 import { getStorageLocation, getTagsDirectory } from '../utils/storageUtils';
+import { logger } from '../utils/logger';
 
 const readContractFilesToArray = (contractsDirectoryPath) => fs
   .readdir(contractsDirectoryPath)
@@ -8,7 +9,11 @@ const readContractFilesToArray = (contractsDirectoryPath) => fs
     .map((contractFilename) => fs
       .readFile(path.join(`${contractsDirectoryPath}/${contractFilename}`), 'utf-8')
       .then((rawContractData) => JSON.parse(rawContractData))))
-  .then((contractObjectPromises) => Promise.all([...contractObjectPromises]));
+  .then((contractObjectPromises) => Promise.all([...contractObjectPromises]))
+  .then((contracts) => {
+    logger.info(`Successfully read ${contracts.length} contract(s) from dir: ${contractsDirectoryPath}`);
+    return contracts;
+  });
 
 const downloadContracts = async (req, res) => {
   const { params: { hash: identifier } } = req;

packages/concordia-contracts-provider/src/controllers/upload.js

@@ -2,6 +2,7 @@ import path from 'path';
 import { constants, promises as fs } from 'fs';
 import uploadFilesUsingMiddleware from '../middleware/upload';
 import { getStorageLocation, getTagsDirectory } from '../utils/storageUtils';
+import { logger } from '../utils/logger';
 
 const provisionContractsDirectory = (req) => {
   const { params: { hash } } = req;
@@ -11,7 +12,11 @@ const provisionContractsDirectory = (req) => {
     .access(contractsPath, constants.W_OK)
     .then(() => fs.rmdir(contractsPath, { recursive: true }))
     .catch(() => Promise.resolve())
-    .then(() => fs.mkdir(contractsPath, { recursive: true }));
+    .then(() => fs.mkdir(contractsPath, { recursive: true }))
+    .then((ignored) => {
+      logger.info(`Provisioned new contracts directory: ${contractsPath}`);
+      return ignored;
+    });
 };
 
 const addOrTransferTag = (tag, hash) => {
@@ -20,7 +25,11 @@ const addOrTransferTag = (tag, hash) => {
 
   return fs
     .mkdir(tagsDirectory, { recursive: true })
-    .then(() => fs.writeFile(tagFilePath, hash, 'utf-8'));
+    .then(() => fs.writeFile(tagFilePath, hash, 'utf-8'))
+    .then((ignored) => {
+      logger.info(`Tag modified: ${tag} -> ${hash}`);
+      return ignored;
+    });
 };
 
 const uploadContracts = async (req, res) => provisionContractsDirectory(req)

packages/concordia-contracts-provider/src/index.js

@@ -1,14 +1,23 @@
 import express from 'express';
+import morgan from 'morgan';
 import cors from 'cors';
 import helmet from 'helmet';
 import { contractsProviderPort } from 'concordia-shared/src/environment/interpolated/contractsProvider';
+import fs from 'fs';
+import path from 'path';
 import initRoutes from './routes/web';
 import constants from './constants';
+import { logger, logsDirectoryPath } from './utils/logger';
+
+const accessLogStream = fs.createWriteStream(path.join(logsDirectoryPath, 'access.log'), { flags: 'a' });
+logger.info('Service setting up.');
 
 const ALLOWED_ORIGINS = process.env.CORS_ALLOWED_ORIGINS
   ? process.env.CORS_ALLOWED_ORIGINS.split(';')
   : constants.corsAllowedOrigins;
 
+logger.info(`Allowed origins: ${ALLOWED_ORIGINS.join(', ')}`);
+
 const app = express();
 
 const corsOptions = {
@@ -19,9 +28,10 @@ const corsOptions = {
 app.use(express.urlencoded({ extended: true }));
 app.use(cors(corsOptions));
 app.use(helmet());
+app.use(morgan('combined', { stream: accessLogStream }));
 
 initRoutes(app);
 
 app.listen(contractsProviderPort, () => {
-  console.log(`Contracts provider listening at http://127.0.0.1:${contractsProviderPort}`);
+  logger.info(`Contracts provider listening at http://127.0.0.1:${contractsProviderPort}`);
 });

packages/concordia-contracts-provider/src/utils/logger.js

@@ -0,0 +1,9 @@
+import winston from 'winston';
+import fs from 'fs';
+import getLogger from 'concordia-shared/src/logging/node/winstonLogUtils';
+import constants from '../constants';
+
+export const logsDirectoryPath = process.env.LOGS_PATH || constants.logsPath;
+fs.mkdirSync(logsDirectoryPath, { recursive: true });
+
+export const logger = getLogger(winston, logsDirectoryPath, 'concordia-contracts-provider');

packages/concordia-pinner/.gitignore

@@ -15,6 +15,7 @@ packages/concordia-contracts/build
 
 # Logs
 /log
+/logs
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*

packages/concordia-pinner/package.json

@@ -29,12 +29,14 @@
     "libp2p-tcp": "~0.15.1",
     "libp2p-webrtc-star": "~0.21.1",
     "lodash": "^4.17.20",
+    "morgan": "^1.10.0",
     "orbit-db": "~0.26.0",
     "orbit-db-identity-provider": "~0.3.1",
     "rimraf": "~3.0.2",
     "unirest": "^0.6.0",
     "web3": "~1.3.0",
     "web3-eth-contract": "^1.3.1",
+    "winston": "^3.3.3",
     "wrtc": "~0.4.6"
   }
 }

packages/concordia-pinner/src/app.js

@@ -1,11 +1,17 @@
 import express from 'express';
+import morgan from 'morgan';
 import _ from 'lodash';
+import fs from 'fs';
+import path from 'path';
 import isReachable from 'is-reachable';
 import { pinnerApiPort } from 'concordia-shared/src/environment/interpolated/pinner';
 import getWeb3ProviderUrl from 'concordia-shared/src/utils/web3';
 import { getResolvedRendezvousUrl } from './utils/ipfsUtils';
+import { logger, logsDirectoryPath } from './utils/logger';
 
 const POLLING_INTERVAL = 1000;
+const accessLogStream = fs.createWriteStream(path.join(logsDirectoryPath, 'access.log'), { flags: 'a' });
+logger.info('Service setting up.');
 
 const responseBody = {
   ipfs: {
@@ -18,11 +24,12 @@ const responseBody = {
 };
 
 getResolvedRendezvousUrl().then(({ address }) => {
+  logger.info(`Resolved rendezvous URL to: ${address}`);
   responseBody.rendezvous.url = address;
 });
 
 const getStats = async (orbit) => {
-  const { address: resolvedRendezvousUrl } = await getResolvedRendezvousUrl();
+  logger.info('Gathering stats.');
 
   try {
     const ipfs = orbit._ipfs;
@@ -34,7 +41,7 @@ const getStats = async (orbit) => {
     const orbitIdentity = orbit.identity;
     const databases = Object.keys(orbit.stores);
     const isWeb3Reachable = await isReachable(getWeb3ProviderUrl());
-    const isRendezvousReachable = await isReachable(resolvedRendezvousUrl.address);
+    const isRendezvousReachable = responseBody.rendezvous.url ? await isReachable(responseBody.rendezvous.url) : false;
     const timestamp = +new Date();
 
     responseBody.ipfs.id = id;
@@ -48,18 +55,21 @@ const getStats = async (orbit) => {
     responseBody.rendezvous.reachable = isRendezvousReachable;
     responseBody.timestamp = timestamp;
   } catch (err) {
-    console.error('Error while getting stats:', err);
+    logger.error('Error while getting stats:', err);
   }
 };
 
 const startAPI = (orbit) => {
   const app = express();
+
+  app.use(morgan('combined', { stream: accessLogStream }));
+
   app.get('/', async (req, res) => {
     res.send(responseBody);
   });
 
   app.listen(pinnerApiPort, () => {
-    console.log(`Pinner API at http://localhost:${pinnerApiPort}!`);
+    logger.info(`Pinner API at http://localhost:${pinnerApiPort}!`);
   });
 
   setInterval(getStats, POLLING_INTERVAL, orbit);

packages/concordia-pinner/src/constants.js

@@ -1,5 +1,4 @@
 import path from 'path';
 
-const ORBIT_DIRECTORY_DEFAULT = path.join(__dirname, '..', 'orbitdb');
+export const ORBIT_DIRECTORY_DEFAULT = path.join(__dirname, '..', 'orbitdb');
-
+export const LOGS_PATH = path.join(__dirname, '..', 'logs');
-export default ORBIT_DIRECTORY_DEFAULT;

packages/concordia-pinner/src/index.js

@@ -8,16 +8,17 @@ import { createOrbitInstance, getPeerDatabases, openKVDBs } from './utils/orbitU
 import startAPI from './app';
 import downloadContractArtifacts from './utils/drizzleUtils';
 import getIpfsOptions from './options/ipfsOptions';
+import { logger } from './utils/logger';
 
 process.on('unhandledRejection', (error) => {
   // This happens when attempting to initialize without any available Swarm addresses (e.g. Rendezvous)
   if (error.code === 'ERR_NO_VALID_ADDRESSES') {
-    console.error('unhandledRejection', error.message);
+    logger.error(`unhandledRejection: ${error.message}`);
     process.exit(1);
   }
 
   // Don't swallow other errors
-  console.error(error);
+  logger.error(error);
   throw error;
 });
 
@@ -25,7 +26,6 @@ const getDeployedContract = async (web3) => {
   let forumContractPromise;
 
   if (process.env.USE_EXTERNAL_CONTRACTS_PROVIDER) {
-    console.log('Downloading contracts.');
     forumContractPromise = downloadContractArtifacts()
       .then((remoteContracts) => remoteContracts
         .find((remoteContract) => remoteContract.contractName === FORUM_CONTRACT));
@@ -57,14 +57,15 @@ const handleWeb3LogEvent = (web3, eventJsonInterface, orbit) => (error, result)
       result.topics.slice(1),
     );
     const userAddress = eventObj[1];
-    console.log('User signed up:', userAddress);
+
+    logger.info(`User signed up: ${userAddress}`);
     getPeerDatabases(orbit, [userAddress])
       .then((peerDBs) => openKVDBs(orbit, peerDBs));
   }
 };
 
 const main = async () => {
-  console.log('Initializing...');
+  logger.info('Initializing IPFS and orbitDb.');
   const web3 = new Web3(new Web3.providers.WebsocketProvider(getWeb3ProviderUrl()));
 
   getDeployedContract(web3)
@@ -87,11 +88,11 @@ const main = async () => {
 
           orbit._ipfs.libp2p.connectionManager.on(
             'peer:connect',
-            (peerInfo) => console.log('Peer connected: ', peerInfo.remotePeer.toB58String()),
+            (peerInfo) => logger.info(`Peer connected: ${peerInfo.remotePeer.toB58String()}`),
           );
           orbit._ipfs.libp2p.connectionManager.on(
             'peer:disconnect',
-            (peerInfo) => console.log('Peer disconnected: ', peerInfo.remotePeer.toB58String()),
+            (peerInfo) => logger.info(`Peer disconnected: ${peerInfo.remotePeer.toB58String()}`),
           );
           startAPI(orbit);
         })));

packages/concordia-pinner/src/options/ipfsOptions.js

@@ -1,7 +1,12 @@
 import getLibp2pBundle from './libp2pBundle';
 import { getSwarmAddresses } from '../utils/ipfsUtils';
+import { logger } from '../utils/logger';
 
 const getIpfsOptions = async () => getSwarmAddresses()
+  .then((swarmAddresses) => {
+    logger.info(`Swarm addresses used: ${swarmAddresses.join(', ')}`);
+    return swarmAddresses;
+  })
   .then((swarmAddresses) => ({
     repo: 'ipfs',
     config: {

packages/concordia-pinner/src/utils/drizzleUtils.js

@@ -6,29 +6,42 @@ import {
 } from 'concordia-shared/src/environment/interpolated/contractsProvider';
 import { pinnerApiHost, pinnerApiPort } from 'concordia-shared/src/environment/interpolated/pinner';
 import { FORUM_CONTRACT } from 'concordia-shared/src/constants/contracts/ContractNames';
+import { logger } from './logger';
 
 function getContractsDownloadRequest() {
   const HOST = pinnerApiHost;
   const PORT = pinnerApiPort;
 
+  const contractsProviderAddress = `http://${contractsProviderHost}:${contractsProviderPort}/contracts/\
+  ${contractsVersionHash}`;
+  const selfAddress = `${HOST}:${PORT}`;
+
+  logger.info(`Trying contracts provider address: ${contractsProviderAddress}`);
+  logger.info(`Sending with CORS address: ${selfAddress}`);
+
   return unirest(
     'GET',
-    `http://${contractsProviderHost}:${contractsProviderPort}/contracts/${contractsVersionHash}`,
+    contractsProviderAddress,
   ).headers({
-    'Access-Control-Allow-Origin': `${HOST}:${PORT}`,
+    'Access-Control-Allow-Origin': selfAddress,
     'Access-Control-Allow-Credentials': 'true',
   });
 }
 
 const validateRemoteContracts = (remoteContracts) => {
+  logger.info('Validating remote contracts.');
+
   if (!remoteContracts
     .map((remoteContract) => remoteContract.contractName)
     .includes(FORUM_CONTRACT)) {
     throw new Error('Forum contract is missing from artifacts.');
   }
+
+  logger.info('Remote contracts valid.');
 };
 
 const downloadContractArtifacts = () => {
+  logger.info('Downloading contracts.');
   const request = getContractsDownloadRequest();
 
   return new Promise((resolve, reject) => request

packages/concordia-pinner/src/utils/ipfsUtils.js

@@ -1,11 +1,12 @@
 import dns from 'dns';
 import util from 'util';
 import { rendezvousHost, rendezvousPort } from 'concordia-shared/src/environment/interpolated/rendezvous';
+import { logger } from './logger';
 
 const dnsLookup = util.promisify(dns.lookup);
 
 export const getResolvedRendezvousUrl = async () => dnsLookup(rendezvousHost, { family: 4 })
-  .catch((error) => console.error(new Error(`DNS lookup of ${rendezvousHost} failed.\n${error}`)));
+  .catch((error) => logger.error(new Error(`DNS lookup of ${rendezvousHost} failed.\n${error}`)));
 
 export const getSwarmAddresses = async () => getResolvedRendezvousUrl()
   .then((resolvedRendezvousUrl) => [`/ip4/${resolvedRendezvousUrl.address}/tcp/${rendezvousPort}/wss/p2p-webrtc-star`]);

packages/concordia-pinner/src/utils/logger.js

@@ -0,0 +1,9 @@
+import winston from 'winston';
+import fs from 'fs';
+import getLogger from 'concordia-shared/src/logging/node/winstonLogUtils';
+import { LOGS_PATH } from '../constants';
+
+export const logsDirectoryPath = process.env.LOGS_PATH || LOGS_PATH;
+fs.mkdirSync(logsDirectoryPath, { recursive: true });
+
+export const logger = getLogger(winston, logsDirectoryPath, 'concordia-pinner');

packages/concordia-pinner/src/utils/orbitUtils.js

@@ -2,7 +2,8 @@ import OrbitDB from 'orbit-db';
 import Identities from 'orbit-db-identity-provider';
 import { EthereumContractIdentityProvider } from '@ezerous/eth-identity-provider';
 import Web3 from 'web3';
-import ORBIT_DIRECTORY_DEFAULT from '../constants';
+import { ORBIT_DIRECTORY_DEFAULT } from '../constants';
+import { logger } from './logger';
 
 // TODO: share code below with frontend (?)
 const determineDBAddress = async ({
@@ -40,7 +41,7 @@ export const openKVDBs = async (orbit, databases) => {
     .forEach((database) => {
       orbit
         .keyvalue(database)
-        .then((store) => store.events.on('replicated', (address) => console.log(`Replicated ${address}`)));
+        .then((store) => store.events.on('replicated', (address) => logger.info(`Replicated ${address}`)));
-      console.log(`Opened ${database}`);
+      logger.info(`Opened ${database}`);
     });
 };

packages/concordia-shared/src/logging/node/winstonLogUtils.js

@@ -0,0 +1,48 @@
+const path = require('path');
+
+const getLogger = (winston, logsDirectory, serviceName) => {
+  const transports = [
+    new winston.transports.File({
+      filename: path.join(logsDirectory, 'error.log'),
+      level: 'error',
+    }),
+    new winston.transports.File({
+      filename: path.join(logsDirectory, 'combined.log'),
+    }),
+  ];
+
+  const exceptionHandlers = [
+    new winston.transports.File({ filename: path.join(logsDirectory, 'exceptions.log') }),
+  ];
+
+  if (process.env.NODE_ENV !== 'production') {
+    transports.push(new winston.transports.Console({
+      format: winston.format.combine(
+        winston.format.colorize(),
+        winston.format.timestamp(),
+        winston.format.simple(),
+      ),
+    }));
+
+    exceptionHandlers.push(new winston.transports.Console({
+      format: winston.format.combine(
+        winston.format.colorize(),
+        winston.format.timestamp(),
+        winston.format.simple(),
+      ),
+    }));
+  }
+
+  return winston.createLogger({
+    level: process.env.NODE_ENV === 'production' ? 'info' : 'silly',
+    format: winston.format.combine(
+      winston.format.timestamp(),
+      winston.format.json(),
+    ),
+    defaultMeta: { service: serviceName },
+    transports,
+    exceptionHandlers,
+  });
+};
+
+module.exports = getLogger;