Add web3 usage metrics, prepare for web3 removal (#9144)

* add web3 usage metrics

* move web3 metrics method to new middleware

* rename some methods, files, and exports

app/scripts/controllers/permissions/index.js

@@ -7,7 +7,7 @@ import { CapabilitiesController as RpcCap } from 'rpc-cap'
 import { ethErrors } from 'eth-json-rpc-errors'
 import { cloneDeep } from 'lodash'
 
-import createMethodMiddleware from './methodMiddleware'
+import createPermissionsMethodMiddleware from './permissionsMethodMiddleware'
 import PermissionsLogController from './permissionsLog'
 
 // Methods that do not require any permissions to use:
@@ -90,7 +90,7 @@ export class PermissionsController {
 
     engine.push(this.permissionsLog.createMiddleware())
 
-    engine.push(createMethodMiddleware({
+    engine.push(createPermissionsMethodMiddleware({
       addDomainMetadata: this.addDomainMetadata.bind(this),
       getAccounts: this.getAccounts.bind(this, origin),
       getUnlockPromise: () => this._getUnlockPromise(true),

app/scripts/controllers/permissions/permissionsMethodMiddleware.js

@@ -4,7 +4,7 @@ import { ethErrors } from 'eth-json-rpc-errors'
 /**
  * Create middleware for handling certain methods and preprocessing permissions requests.
  */
-export default function createMethodMiddleware ({
+export default function createPermissionsMethodMiddleware ({
   addDomainMetadata,
   getAccounts,
   getUnlockPromise,

app/scripts/inpage.js

@@ -1,5 +1,3 @@
-/*global Web3*/
-
 // need to make sure we aren't affected by overlapping namespaces
 // and that we dont affect the app with our namespace
 // mostly a fix for web3's BigNumber if AMD's "define" is defined...
@@ -37,9 +35,7 @@ import LocalMessageDuplexStream from 'post-message-stream'
 import { initProvider } from '@metamask/inpage-provider'
 
 // TODO:deprecate:2020
-import 'web3/dist/web3.min.js'
-
-import setupDappAutoReload from './lib/auto-reload.js'
+import setupWeb3 from './lib/setupWeb3.js'
 
 restoreContextAfterImports()
 
@@ -59,11 +55,9 @@ initProvider({
   connectionStream: metamaskStream,
 })
 
-//
 // TODO:deprecate:2020
-//
+// Setup web3
 
-// setup web3
 
 if (typeof window.web3 !== 'undefined') {
   throw new Error(`MetaMask detected another web3.
@@ -73,18 +67,5 @@ if (typeof window.web3 !== 'undefined') {
      and try again.`)
 }
 
-const web3 = new Web3(window.ethereum)
-web3.setProvider = function () {
-  log.debug('MetaMask - overrode web3.setProvider')
-}
-log.debug('MetaMask - injected web3')
-
-Object.defineProperty(window.ethereum, '_web3Ref', {
-  enumerable: false,
-  writable: true,
-  configurable: true,
-  value: web3.eth,
-})
-
-// setup dapp auto reload AND proxy web3
-setupDappAutoReload(web3, window.ethereum._publicConfigStore)
+// proxy web3, assign to window, and set up site auto reload
+setupWeb3(log)

app/scripts/lib/background-metametrics.js

@@ -1,13 +1,13 @@
 import { getBackgroundMetaMetricState } from '../../../ui/app/selectors'
 import { sendMetaMetricsEvent } from '../../../ui/app/helpers/utils/metametrics.util'
 
-export default function backEndMetaMetricsEvent (metaMaskState, eventData) {
+export default function backgroundMetaMetricsEvent (metaMaskState, eventData) {
   const stateEventData = getBackgroundMetaMetricState({ metamask: metaMaskState })
-
   if (stateEventData.participateInMetaMetrics) {
     sendMetaMetricsEvent({
       ...stateEventData,
       ...eventData,
+      category: 'Background',
       currentPath: '/background',
     })
   }

app/scripts/lib/createMethodMiddleware.js

@@ -0,0 +1,32 @@
+/**
+ * Returns a middleware that implements the following RPC methods:
+ * - metamask_logInjectedWeb3Usage
+ *
+ * @param {Object} opts - The middleware options
+ * @param {string} opts.origin - The origin for the middleware stack
+ * @param {Function} opts.sendMetrics - A function for sending a metrics event
+ * @returns {(req: any, res: any, next: Function, end: Function) => void}
+ */
+export default function createMethodMiddleware ({ origin, sendMetrics }) {
+  return function methodMiddleware (req, res, next, end) {
+    switch (req.method) {
+
+      case 'metamask_logInjectedWeb3Usage':
+
+        const { action, name } = req.params[0]
+
+        sendMetrics({
+          action,
+          name,
+          customVariables: { origin },
+        })
+
+        res.result = true
+        break
+
+      default:
+        return next()
+    }
+    return end()
+  }
+}

app/scripts/lib/setupWeb3.js

@@ -1,26 +1,67 @@
+/*global Web3*/
 
 // TODO:deprecate:2020
+// Delete this file
 
-export default function setupDappAutoReload (web3, observable) {
+import 'web3/dist/web3.min.js'
+
+const shouldLogUsage = !([
+  'docs.metamask.io',
+  'metamask.github.io',
+  'metamask.io',
+].includes(window.location.hostname))
+
+export default function setupWeb3 (log) {
   // export web3 as a global, checking for usage
   let reloadInProgress = false
   let lastTimeUsed
   let lastSeenNetwork
   let hasBeenWarned = false
 
+  const web3 = new Web3(window.ethereum)
+  web3.setProvider = function () {
+    log.debug('MetaMask - overrode web3.setProvider')
+  }
+  log.debug('MetaMask - injected web3')
+
+  Object.defineProperty(window.ethereum, '_web3Ref', {
+    enumerable: false,
+    writable: true,
+    configurable: true,
+    value: web3.eth,
+  })
+
   const web3Proxy = new Proxy(web3, {
     get: (_web3, key) => {
+
       // get the time of use
       lastTimeUsed = Date.now()
+
       // show warning once on web3 access
-      if (!hasBeenWarned && key !== 'currentProvider') {
+      if (!hasBeenWarned) {
         console.warn(`MetaMask: We will stop injecting web3 in Q4 2020.\nPlease see this article for more information: https://medium.com/metamask/no-longer-injecting-web3-js-4a899ad6e59e`)
         hasBeenWarned = true
       }
+
+      if (shouldLogUsage) {
+        window.ethereum.request({
+          method: 'metamask_logInjectedWeb3Usage',
+          params: [{ action: 'window.web3 get', name: key }],
+        })
+      }
+
       // return value normally
       return _web3[key]
     },
     set: (_web3, key, value) => {
+
+      if (shouldLogUsage) {
+        window.ethereum.request({
+          method: 'metamask_logInjectedWeb3Usage',
+          params: [{ action: 'window.web3 set', name: key }],
+        })
+      }
+
       // set value normally
       _web3[key] = value
     },
@@ -33,7 +74,7 @@ export default function setupDappAutoReload (web3, observable) {
     value: web3Proxy,
   })
 
-  observable.subscribe(function (state) {
+  window.ethereum._publicConfigStore.subscribe((state) => {
     // if the auto refresh on network change is false do not
     // do anything
     if (!window.ethereum.autoRefreshOnNetworkChange) {

app/scripts/metamask-controller.js

@@ -19,6 +19,7 @@ import createEngineStream from 'json-rpc-middleware-stream/engineStream'
 import createFilterMiddleware from 'eth-json-rpc-filters'
 import createSubscriptionManager from 'eth-json-rpc-filters/subscriptionManager'
 import createLoggerMiddleware from './lib/createLoggerMiddleware'
+import createMethodMiddleware from './lib/createMethodMiddleware'
 import createOriginMiddleware from './lib/createOriginMiddleware'
 import createTabIdMiddleware from './lib/createTabIdMiddleware'
 import createOnboardingMiddleware from './lib/createOnboardingMiddleware'
@@ -66,7 +67,7 @@ import {
   PhishingController,
 } from '@metamask/controllers'
 
-import backEndMetaMetricsEvent from './lib/backend-metametrics'
+import backgroundMetaMetricsEvent from './lib/background-metametrics'
 
 export default class MetamaskController extends EventEmitter {
 
@@ -249,18 +250,11 @@ export default class MetamaskController extends EventEmitter {
         this.platform.showTransactionNotification(txMeta)
 
         const { txReceipt } = txMeta
-        const participateInMetaMetrics = this.preferencesController.getParticipateInMetaMetrics()
-        if (txReceipt && txReceipt.status === '0x0' && participateInMetaMetrics) {
-          const metamaskState = await this.getState()
-          backEndMetaMetricsEvent(metamaskState, {
-            customVariables: {
-              errorMessage: txMeta.simulationFails?.reason,
-            },
-            eventOpts: {
-              category: 'Background',
-              action: 'Transactions',
-              name: 'On Chain Failure',
-            },
+        if (txReceipt && txReceipt.status === '0x0') {
+          this.sendBackgroundMetaMetrics({
+            action: 'Transactions',
+            name: 'On Chain Failure',
+            customVariables: { errorMessage: txMeta.simulationFails?.reason },
           })
         }
       }
@@ -1637,6 +1631,10 @@ export default class MetamaskController extends EventEmitter {
       location,
       registerOnboarding: this.onboardingController.registerOnboarding,
     }))
+    engine.push(createMethodMiddleware({
+      origin,
+      sendMetrics: this.sendBackgroundMetaMetrics.bind(this),
+    }))
     // filter and subscription polyfills
     engine.push(filterMiddleware)
     engine.push(subscriptionManager.middleware)
@@ -1837,6 +1835,22 @@ export default class MetamaskController extends EventEmitter {
     return nonceLock.nextNonce
   }
 
+  async sendBackgroundMetaMetrics ({ action, name, customVariables } = {}) {
+
+    if (!action || !name) {
+      throw new Error('Must provide action and name.')
+    }
+
+    const metamaskState = await this.getState()
+    backgroundMetaMetricsEvent(metamaskState, {
+      customVariables,
+      eventOpts: {
+        action,
+        name,
+      },
+    })
+  }
+
   //=============================================================================
   // CONFIG
   //=============================================================================

ui/app/helpers/utils/metametrics.util.js

@@ -23,7 +23,7 @@ const METAMETRICS_CUSTOM_GAS_LIMIT_CHANGE = 'gasLimitChange'
 const METAMETRICS_CUSTOM_GAS_PRICE_CHANGE = 'gasPriceChange'
 const METAMETRICS_CUSTOM_FUNCTION_TYPE = 'functionType'
 const METAMETRICS_CUSTOM_RECIPIENT_KNOWN = 'recipientKnown'
-const METAMETRICS_CUSTOM_CONFIRM_SCREEN_ORIGIN = 'origin'
+const METAMETRICS_REQUEST_ORIGIN = 'origin'
 const METAMETRICS_CUSTOM_FROM_NETWORK = 'fromNetwork'
 const METAMETRICS_CUSTOM_TO_NETWORK = 'toNetwork'
 const METAMETRICS_CUSTOM_ERROR_FIELD = 'errorField'
@@ -36,7 +36,7 @@ const METAMETRICS_CUSTOM_ASSET_SELECTED = 'assetSelected'
 const customVariableNameIdMap = {
   [METAMETRICS_CUSTOM_FUNCTION_TYPE]: 1,
   [METAMETRICS_CUSTOM_RECIPIENT_KNOWN]: 2,
-  [METAMETRICS_CUSTOM_CONFIRM_SCREEN_ORIGIN]: 3,
+  [METAMETRICS_REQUEST_ORIGIN]: 3,
   [METAMETRICS_CUSTOM_GAS_LIMIT_CHANGE]: 4,
   [METAMETRICS_CUSTOM_GAS_PRICE_CHANGE]: 5,