From 354f8c0d7de8ff2611988f9839c2072295c955ae Mon Sep 17 00:00:00 2001 From: kumavis Date: Mon, 8 Oct 2018 11:55:07 -0400 Subject: provider - enable subscription support (newHeads, logs) --- app/scripts/metamask-controller.js | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) (limited to 'app/scripts/metamask-controller.js') diff --git a/app/scripts/metamask-controller.js b/app/scripts/metamask-controller.js index 34ca80dd7..a59be7744 100644 --- a/app/scripts/metamask-controller.js +++ b/app/scripts/metamask-controller.js @@ -15,6 +15,7 @@ const RpcEngine = require('json-rpc-engine') const debounce = require('debounce') const createEngineStream = require('json-rpc-middleware-stream/engineStream') const createFilterMiddleware = require('eth-json-rpc-filters') +const createSubscriptionManager = require('eth-json-rpc-filters/subscriptionManager') const createOriginMiddleware = require('./lib/createOriginMiddleware') const createLoggerMiddleware = require('./lib/createLoggerMiddleware') const createProviderMiddleware = require('./lib/createProviderMiddleware') @@ -1246,24 +1247,33 @@ module.exports = class MetamaskController extends EventEmitter { setupProviderConnection (outStream, origin) { // setup json rpc engine stack const engine = new RpcEngine() + const provider = this.provider + const blockTracker = this.blockTracker // create filter polyfill middleware - const filterMiddleware = createFilterMiddleware({ - provider: this.provider, - blockTracker: this.blockTracker, - }) + const filterMiddleware = createFilterMiddleware({ provider, blockTracker }) + // create subscription polyfill middleware + const subscriptionManager = createSubscriptionManager({ provider, blockTracker }) + subscriptionManager.events.on('notification', (message) => engine.emit('notification', message)) + // metadata engine.push(createOriginMiddleware({ origin })) engine.push(createLoggerMiddleware({ origin })) + // filter and subscription polyfills engine.push(filterMiddleware) + engine.push(subscriptionManager.middleware) + // watch asset engine.push(this.preferencesController.requestWatchAsset.bind(this.preferencesController)) + // sign typed data middleware engine.push(this.createTypedDataMiddleware('eth_signTypedData', 'V1').bind(this)) engine.push(this.createTypedDataMiddleware('eth_signTypedData_v1', 'V1').bind(this)) engine.push(this.createTypedDataMiddleware('eth_signTypedData_v3', 'V3', true).bind(this)) - engine.push(createProviderMiddleware({ provider: this.provider })) + // forward to metamask primary provider + engine.push(createProviderMiddleware({ provider })) // setup connection const providerStream = createEngineStream({ engine }) + pump( outStream, providerStream, -- cgit v1.2.3