Enable sentry error capturing on server

server/emailSubmitter.js

@@ -1,5 +1,6 @@
 require('isomorphic-fetch')
 const {backendConfig} = require('./helpers/loadConfig')
+const {captureException} = require('@sentry/node')
 
 module.exports = function(app, env) {
   app.post('/api/emails/submit', async (req, res) => {
@@ -49,8 +50,9 @@ module.exports = function(app, env) {
         Left: 'Email submission rejected by network',
       })
     } catch (err) {
+      captureException(err)
       return res.json({
-        Left: 'An unexpected error has happened',
+        Left: 'An unexpected error has occurred.',
       })
     }
   })

server/helpers/dropSensitiveEventData.js

@@ -0,0 +1,7 @@
+module.exports = function dropSensitiveEventData(event) {
+  if (event.request && event.request.data) delete event.request.data
+  if (event.request && event.request.cookies) delete event.request.cookies
+  // otherwise all errors would have generic names
+  event.exception.values[0].type = event.exception.values[0].value
+  return event
+}

server/index.js

@@ -8,6 +8,18 @@ const ipfilter = require('express-ipfilter').IpFilter
 const errorHandler = require('./middlewares/errorHandler')
 
 let app = express()
+const Sentry = require('@sentry/node')
+const dropSensitiveEventData = require('./helpers/dropSensitiveEventData')
+
+Sentry.init({
+  dsn: 'https://43eac31915bb40caa03798a51048e756@o150853.ingest.sentry.io/5421403',
+  tracesSampleRate: 0,
+  beforeSend(event) {
+    return dropSensitiveEventData(event)
+  },
+})
+
+app.use(Sentry.Handlers.requestHandler())
 
 express.static.mime.types.wasm = 'application/wasm'
 
@@ -114,6 +126,7 @@ app.get('*', (req, res) => {
     `)
 })
 
+app.use(Sentry.Handlers.errorHandler())
 app.use(errorHandler)
 
 /*

server/middlewares/statsGoogleAnalytics.js

@@ -4,6 +4,7 @@ const normalizeUrl = require('normalize-url')
 const {parseTxBodyOutAmount, parseTxBodyTotalAmount} = require('../helpers/parseTxBody')
 const ua = require('universal-analytics')
 const {backendConfig} = require('../helpers/loadConfig')
+const {captureException} = require('@sentry/node')
 
 const knownIps = new Set()
 
@@ -113,6 +114,7 @@ const trackTxSubmissions = mung.jsonAsync(async (body, req, res) => {
     } catch (err) {
       // eslint-disable-next-line no-console
       console.error(`Tracking event failed - ${err}`)
+      captureException(err)
     }
   }
 

server/middlewares/statsRedis.js

@@ -4,6 +4,7 @@ const client = redis.createClient(process.env.REDIS_URL)
 const mung = require('express-mung')
 const normalizeUrl = require('normalize-url')
 const {parseTxBodyOutAmount, parseTxBodyTotalAmount} = require('../helpers/parseTxBody')
+const {captureException} = require('@sentry/node')
 
 const knownIps = new Set()
 
@@ -66,6 +67,7 @@ const trackTxSubmissions = mung.json((body, req, res) => {
       } catch (e) {
         // eslint-disable-next-line no-console
         console.error(e)
+        captureException(e)
       }
 
       incrCountersBy(`${txSubmissionType}:sentOut`, txOutAmount)

server/statsPageRedis.js

@@ -1,6 +1,7 @@
 const redis = require('redis')
 const redisScan = require('redisscan')
 const client = redis.createClient(process.env.REDIS_URL)
+const {captureException} = require('@sentry/node')
 
 const getStats = async () => {
   const stats = {
@@ -161,6 +162,7 @@ module.exports = function(app, env) {
     } catch (e) {
       // eslint-disable-next-line no-console
       console.error(e)
+      captureException(e)
       return 'Something went wrong, bother the devs.'
     }
   })

server/transactionSubmitter.js

@@ -1,4 +1,5 @@
 require('isomorphic-fetch')
+const Sentry = require('@sentry/node')
 
 module.exports = function(app, env) {
   // eslint-disable-next-line consistent-return
@@ -37,19 +38,24 @@ module.exports = function(app, env) {
       }
 
       const errorMessage = await response.text()
+
       // eslint-disable-next-line no-console
       console.error(
         `Submission of tx ${txHash} failed with status ${response.status} and message ${errorMessage}`
       )
 
+      Sentry.captureException(new Error('TransactionSubmissionFailed'), {
+        contexts: [{...JSON.parse(errorMessage)}],
+      })
+
       return res.json({
         Left: `Transaction rejected by network - ${errorMessage}`,
         statusCode: response.status,
       })
     } catch (err) {
       // eslint-disable-next-line no-console
       console.error(`Submission of tx ${txHash} failed with an unexpected error: ${err.stack}`)
-
+      Sentry.captureException(e)
       return res.json({
         Left: 'An unexpected error has occurred',
       })