Add timestamp to console log (#363)

* Create custom logger with timestamps

server/index.js

@@ -9,7 +9,8 @@ const Koa = require('koa'),
   passport = require('passport'),
   csrf = require('koa-csrf'),
   auth = require('./auth'),
-  { securityHeaders } = require('./middlewares');
+  { securityHeaders } = require('./middlewares'),
+  logger = require('./logger');
 
 app.webpackConfig = require('../webpack.config');
 
@@ -45,7 +46,7 @@ app.init = function(options) {
           options.logErrors !== false &&
           (typeof err.statusCode !== 'number' || err.statusCode >= 500)
         ) {
-          console.error(err);
+          logger.error(err);
         }
         ctx.status = err.statusCode || err.status || 500;
         ctx.body = { message: err.message };

server/logger.js

@@ -0,0 +1,14 @@
+const timeStamp = () => '[' + new Date().toISOString() + ']';
+
+const withTimestamp = (fn, ...args) => {
+  return fn.call(null, timeStamp(), ...args);
+};
+
+const logger = {
+  log: (...args) => withTimestamp(console.log, ...args),
+  warn: (...args) => withTimestamp(console.warn, ...args),
+  error: (...args) => withTimestamp(console.error, ...args),
+  debug: (...args) => withTimestamp(console.debug, ...args),
+};
+
+module.exports = logger;

server/temporal-client/helpers.js

@@ -1,6 +1,7 @@
 const Long = require('long');
 const losslessJSON = require('lossless-json');
 const moment = require('moment');
+const logger = require('../logger')
 
 function buildHistory(getHistoryRes) {
   const history = getHistoryRes.history;
@@ -130,7 +131,7 @@ function uiTransform(item, rawPayloads = false, transformingPayloads = false) {
 
             payloads = [...payloads, data];
           } catch (error) {
-            console.log(
+            logger.log(
               `Unable to process payload. Encoding: ${encoding}, data: ${data}. ${error}`
             );
             payloads = [...payloads, data.toString()];

server/tls/tls.js

@@ -3,6 +3,7 @@ const { readCredsFromCertFiles } = require('./read-creds-from-cert-files');
 const { readCredsFromConfig } = require('./read-creds-from-config');
 const { compareCaseInsensitive } = require('../utils');
 const { getTlsConfig } = require('../config');
+const logger = require('../logger')
 
 const keyPath = process.env.TEMPORAL_TLS_KEY_PATH;
 const certPath = process.env.TEMPORAL_TLS_CERT_PATH;
@@ -14,25 +15,25 @@ const verifyHost = [true, 'true', undefined].includes(
 const tlsConfigFile = getTlsConfig()
 function getCredentials() {
   if (keyPath !== undefined && certPath !== undefined) {
-    console.log('establishing secure connection using TLS cert files...');
+    logger.log('establishing secure connection using TLS cert files...');
     const { pk, cert, ca } = readCredsFromCertFiles({
       keyPath,
       certPath,
       caPath,
     });
     return createSecure(pk, cert, ca, serverName, verifyHost);
   } else if (caPath !== undefined) {
-    console.log('establishing server-side TLS connection using only TLS CA file...');
+    logger.log('establishing server-side TLS connection using only TLS CA file...');
     const { ca } = readCredsFromCertFiles({ caPath });
     return createSecure(undefined, undefined, ca, serverName, verifyHost);
   } else if (tlsConfigFile.key) {
-    console.log(
+    logger.log(
       'establishing secure connection using TLS yml configuration...'
     );
     const { pk, cert, ca, serverName, verifyHost } = readCredsFromConfig();
     return createSecure(pk, cert, ca, serverName, verifyHost);
   } else {
-    console.log('establishing insecure connection...');
+    logger.log('establishing insecure connection...');
     return { credentials: grpc.credentials.createInsecure(), options: {} };
   }
 }