Try to detect unsynced node state (#592)

.github/workflows/main.yml

@@ -77,7 +77,7 @@ jobs:
       - name: Rebuild and push updated images
         run: |
           function check_if_image_exists() {
-            curl -fsSlL -H 'Authorization: bearer ${{ github.token }}' "https://${DOCKER_REGISTRY}/v2/${DOCKER_REPO}/tokenbridge-e2e-$1/manifests/$2" > /dev/null
+            curl -fsSlL "https://${{ github.actor }}:${{ github.token }}@${DOCKER_REGISTRY}/v2/${DOCKER_REPO}/tokenbridge-e2e-$1/manifests/$2" > /dev/null
           }
           updated=()
           if ! check_if_image_exists e2e ${E2E_TAG};         then updated+=("e2e"); fi
@@ -104,7 +104,7 @@ jobs:
       - name: Rebuild and push molecule runner e2e image
         run: |
           function check_if_image_exists() {
-            curl -fsSlL -H 'Authorization: bearer ${{ github.token }}' "https://${DOCKER_REGISTRY}/v2/${DOCKER_REPO}/tokenbridge-e2e-$1/manifests/$2" > /dev/null
+            curl -fsSlL "https://${{ github.actor }}:${{ github.token }}@${DOCKER_REGISTRY}/v2/${DOCKER_REPO}/tokenbridge-e2e-$1/manifests/$2" > /dev/null
           }
           if check_if_image_exists molecule_runner ${MOLECULE_RUNNER_TAG}; then
             echo "Image already exists"

oracle/src/confirmRelay.js

@@ -49,7 +49,7 @@ async function initialize() {
   try {
     const checkHttps = checkHTTPS(ORACLE_ALLOW_HTTP_FOR_RPC, logger)
 
-    web3.currentProvider.subProvider.urls.forEach(checkHttps(chain))
+    web3.currentProvider.urls.forEach(checkHttps(chain))
 
     attached = await isAttached()
     if (attached) {

oracle/src/sender.js

@@ -40,7 +40,7 @@ async function initialize() {
   try {
     const checkHttps = checkHTTPS(process.env.ORACLE_ALLOW_HTTP_FOR_RPC, logger)
 
-    web3.currentProvider.subProvider.urls.forEach(checkHttps(config.id))
+    web3.currentProvider.urls.forEach(checkHttps(config.id))
 
     GasPrice.start(config.id)
 

oracle/src/services/HttpListProvider.js

@@ -41,6 +41,20 @@ function HttpListProvider(urls, options = {}) {
   })
 }
 
+HttpListProvider.prototype.switchToFallbackRPC = function() {
+  if (this.urls.length < 2) {
+    return
+  }
+
+  const prevIndex = this.currentIndex
+  const newIndex = (prevIndex + 1) % this.urls.length
+  this.logger.info(
+    { index: newIndex, oldURL: this.urls[prevIndex], newURL: this.urls[newIndex] },
+    'Switching to fallback JSON-RPC URL'
+  )
+  this.currentIndex = newIndex
+}
+
 HttpListProvider.prototype.send = async function send(payload, callback) {
   // if fallback URL is being used for too long, switch back to the primary URL
   if (this.currentIndex > 0 && Date.now() - this.lastTimeUsedPrimary > FALLBACK_RPC_URL_SWITCH_TIMEOUT) {

oracle/src/services/SafeEthLogsProvider.js

@@ -1,39 +1,35 @@
 const { hexToNumber, isHexStrict } = require('web3').utils
 
-const { onInjected } = require('./injectedLogger')
-
 function SafeEthLogsProvider(provider) {
-  this.subProvider = provider
-  onInjected(logger => {
-    this.logger = logger.child({ module: 'SafeEthLogsProvider' })
-  })
-}
-
-SafeEthLogsProvider.prototype.send = function send(payload, callback) {
-  if (payload.method === 'eth_getLogs' && isHexStrict(payload.params[0].toBlock)) {
-    this.logger.debug('Modifying eth_getLogs request to include batch eth_blockNumber request')
+  const oldSend = provider.send.bind(provider)
+  const newSend = function(payload, callback) {
+    if (payload.method === 'eth_getLogs' && isHexStrict(payload.params[0].toBlock)) {
+      this.logger.debug('Modifying eth_getLogs request to include batch eth_blockNumber request')
 
-    const newPayload = [payload, { jsonrpc: '2.0', id: payload.id + 1, method: 'eth_blockNumber', params: [] }]
-    this.subProvider.send(newPayload, (err, res) => {
-      if (err) {
-        callback(err, null)
-      } else {
-        const rawLogs = res.find(({ id }) => id === payload.id)
-        const rawBlockNumber = res.find(({ id }) => id === payload.id + 1)
-        const blockNumber = hexToNumber(rawBlockNumber.result)
-        const toBlock = hexToNumber(payload.params[0].toBlock)
-
-        if (blockNumber < toBlock) {
-          this.logger.warn({ toBlock, blockNumber }, 'Returned block number is less than the specified toBlock')
-          callback(new Error('block number too low'), null)
+      const newPayload = [payload, { jsonrpc: '2.0', id: payload.id + 1, method: 'eth_blockNumber', params: [] }]
+      oldSend(newPayload, (err, res) => {
+        if (err) {
+          callback(err, null)
         } else {
-          callback(null, rawLogs)
+          const rawLogs = res.find(({ id }) => id === payload.id)
+          const rawBlockNumber = res.find(({ id }) => id === payload.id + 1)
+          const blockNumber = hexToNumber(rawBlockNumber.result)
+          const toBlock = hexToNumber(payload.params[0].toBlock)
+
+          if (blockNumber < toBlock) {
+            this.logger.warn({ toBlock, blockNumber }, 'Returned block number is less than the specified toBlock')
+            callback(new Error('block number too low'), null)
+          } else {
+            callback(null, rawLogs)
+          }
         }
-      }
-    })
-  } else {
-    this.subProvider.send(payload, callback)
+      })
+    } else {
+      oldSend(payload, callback)
+    }
   }
+  provider.send = newSend.bind(provider)
+  return provider
 }
 
 module.exports = {

oracle/src/services/web3.js

@@ -38,10 +38,10 @@ const foreignOptions = {
   retry: RETRY_CONFIG
 }
 
-const homeProvider = new SafeEthLogsProvider(new HttpListProvider(homeUrls, homeOptions))
+const homeProvider = SafeEthLogsProvider(new HttpListProvider(homeUrls, homeOptions))
 const web3Home = new Web3(homeProvider)
 
-const foreignProvider = new SafeEthLogsProvider(new HttpListProvider(foreignUrls, foreignOptions))
+const foreignProvider = SafeEthLogsProvider(new HttpListProvider(foreignUrls, foreignOptions))
 const web3Foreign = new Web3(foreignProvider)
 
 let web3ForeignArchive = null

oracle/src/utils/constants.js

@@ -25,6 +25,7 @@ module.exports = {
   },
   DEFAULT_TRANSACTION_RESEND_INTERVAL: 20 * 60 * 1000,
   FALLBACK_RPC_URL_SWITCH_TIMEOUT: 60 * 60 * 1000,
+  BLOCK_NUMBER_PROGRESS_ITERATIONS_LIMIT: 10,
   SENDER_QUEUE_MAX_PRIORITY: 10,
   SENDER_QUEUE_SEND_PRIORITY: 5,
   SENDER_QUEUE_CHECK_STATUS_PRIORITY: 1,

oracle/src/watcher.js

@@ -6,7 +6,7 @@ const logger = require('./services/logger')
 const { getShutdownFlag } = require('./services/shutdownState')
 const { getBlockNumber, getRequiredBlockConfirmations, getEvents } = require('./tx/web3')
 const { checkHTTPS, watchdog } = require('./utils/utils')
-const { EXIT_CODES } = require('./utils/constants')
+const { EXIT_CODES, BLOCK_NUMBER_PROGRESS_ITERATIONS_LIMIT } = require('./utils/constants')
 
 if (process.argv.length < 3) {
   logger.error('Please check the number of arguments, config file was not provided')
@@ -29,12 +29,14 @@ const { getTokensState } = require('./utils/tokenState')
 const { web3, bridgeContract, eventContract, startBlock, pollingInterval, chain } = config.main
 const lastBlockRedisKey = `${config.id}:lastProcessedBlock`
 let lastProcessedBlock = Math.max(startBlock - 1, 0)
+let lastSeenBlockNumber = 0
+let sameBlockNumberCounter = 0
 
 async function initialize() {
   try {
     const checkHttps = checkHTTPS(process.env.ORACLE_ALLOW_HTTP_FOR_RPC, logger)
 
-    web3.currentProvider.subProvider.urls.forEach(checkHttps(chain))
+    web3.currentProvider.urls.forEach(checkHttps(chain))
 
     await getLastProcessedBlock()
     connectWatcherToQueue({
@@ -117,6 +119,28 @@ async function getLastBlockToProcess(web3, bridgeContract) {
     getBlockNumber(web3),
     getRequiredBlockConfirmations(bridgeContract)
   ])
+
+  if (lastBlockNumber < lastSeenBlockNumber) {
+    sameBlockNumberCounter = 0
+    logger.warn({ lastBlockNumber, lastSeenBlockNumber }, 'Received block number less than already seen block')
+    web3.currentProvider.switchToFallbackRPC()
+  } else if (lastBlockNumber === lastSeenBlockNumber) {
+    sameBlockNumberCounter++
+    if (sameBlockNumberCounter > 1) {
+      logger.info({ lastBlockNumber, sameBlockNumberCounter }, 'Received the same block number more than twice')
+      if (sameBlockNumberCounter >= BLOCK_NUMBER_PROGRESS_ITERATIONS_LIMIT) {
+        sameBlockNumberCounter = 0
+        logger.warn(
+          { lastBlockNumber, n: BLOCK_NUMBER_PROGRESS_ITERATIONS_LIMIT },
+          'Received the same block number for too many times. Probably node is not synced anymore'
+        )
+        web3.currentProvider.switchToFallbackRPC()
+      }
+    }
+  } else {
+    sameBlockNumberCounter = 0
+    lastSeenBlockNumber = lastBlockNumber
+  }
   return lastBlockNumber - requiredBlockConfirmations
 }