From 2a62d63b4f70bea12126e4b15d78ebbf9dbddefb Mon Sep 17 00:00:00 2001
From: kumavis <aaron@kumavis.me>
Date: Sun, 22 May 2016 18:02:27 -0700
Subject: [PATCH] deps - use web3-stream-provider module

---
 app/scripts/background.js          | 34 +++++---------
 app/scripts/lib/inpage-provider.js |  2 +-
 app/scripts/lib/stream-provider.js | 72 ------------------------------
 app/scripts/popup.js               |  2 +-
 4 files changed, 14 insertions(+), 96 deletions(-)
 delete mode 100644 app/scripts/lib/stream-provider.js

diff --git a/app/scripts/background.js b/app/scripts/background.js
index f79047db4..8c6adff04 100644
--- a/app/scripts/background.js
+++ b/app/scripts/background.js
@@ -1,11 +1,12 @@
 const Dnode = require('dnode')
-const ObjectMultiplex = require('./lib/obj-multiplex')
 const eos = require('end-of-stream')
 const combineStreams = require('pumpify')
 const extend = require('xtend')
 const EthStore = require('eth-store')
-const PortStream = require('./lib/port-stream.js')
 const MetaMaskProvider = require('web3-provider-engine/zero.js')
+const handleRequestsFromStream = require('web3-stream-provider/handler')
+const ObjectMultiplex = require('./lib/obj-multiplex')
+const PortStream = require('./lib/port-stream.js')
 const IdentityStore = require('./lib/idStore')
 const createTxNotification = require('./lib/notifications.js').createTxNotification
 const createMsgNotification = require('./lib/notifications.js').createMsgNotification
@@ -132,25 +133,6 @@ function storeSetFromObj(store, obj){
 }
 
 
-
-// handle rpc requests
-function onRpcRequest(remoteStream, payload){
-  // console.log('MetaMaskPlugin - incoming payload:', payload)
-  provider.sendAsync(payload, function onPayloadHandled(err, response){
-    // provider engine errors are included in response objects
-    if (!payload.isMetamaskInternal) {
-      console.log('MetaMaskPlugin - RPC complete:', payload, '->', response)
-      if (response.error) console.error('Error in RPC response:\n'+response.error.message)
-    }
-    try {
-      remoteStream.write(response)
-    } catch (err) {
-      console.error(err)
-    }
-  })
-}
-
-
 //
 // remote features
 //
@@ -161,7 +143,15 @@ function setupPublicConfig(stream){
 }
 
 function setupProviderConnection(stream){
-  stream.on('data', onRpcRequest.bind(null, stream))
+  handleRequestsFromStream(stream, provider, logger)
+
+  function logger(err, request, response){
+    if (err) return console.error(err.stack)
+    if (!request.isMetamaskInternal) {
+      console.log('MetaMaskPlugin - RPC complete:', request, '->', response)
+      if (response.error) console.error('Error in RPC response:\n'+response.error.message)
+    }
+  }
 }
 
 function setupControllerConnection(stream){
diff --git a/app/scripts/lib/inpage-provider.js b/app/scripts/lib/inpage-provider.js
index 66681c3a9..70b0d80dd 100644
--- a/app/scripts/lib/inpage-provider.js
+++ b/app/scripts/lib/inpage-provider.js
@@ -1,7 +1,7 @@
 const HttpProvider = require('web3/lib/web3/httpprovider')
 const Streams = require('mississippi')
 const ObjectMultiplex = require('./obj-multiplex')
-const StreamProvider = require('./stream-provider.js')
+const StreamProvider = require('web3-stream-provider')
 const RemoteStore = require('./remote-store.js').RemoteStore
 const MetamaskConfig = require('../config.js')
 
diff --git a/app/scripts/lib/stream-provider.js b/app/scripts/lib/stream-provider.js
deleted file mode 100644
index 505e45d1f..000000000
--- a/app/scripts/lib/stream-provider.js
+++ /dev/null
@@ -1,72 +0,0 @@
-const Duplex = require('readable-stream').Duplex
-const inherits = require('util').inherits
-
-module.exports = StreamProvider
-
-
-inherits(StreamProvider, Duplex)
-
-function StreamProvider(){
-  Duplex.call(this, {
-    objectMode: true,
-  })
-
-  this._payloads = {}
-}
-
-// public
-
-StreamProvider.prototype.send = function(payload){
-  throw new Error('StreamProvider - does not support synchronous RPC calls. called: "'+payload.method+'"')
-}
-
-StreamProvider.prototype.sendAsync = function(payload, callback){
-  // console.log('StreamProvider - sending payload', payload)
-  var id = payload.id
-  if (Array.isArray(payload)) {
-    id = 'batch'+payload[0].id
-  }
-  this._payloads[id] = [payload, callback]
-  // console.log('payload for plugin:', payload)
-  this.push(payload)
-}
-
-StreamProvider.prototype.isConnected = function(){
-  return true
-}
-
-// private
-
-StreamProvider.prototype._onResponse = function(response){
-  // console.log('StreamProvider - got response', payload)
-  var id = response.id
-  if (Array.isArray(response)) {
-    id = 'batch'+response[0].id
-  }
-  var data = this._payloads[id]
-  if (!data) throw new Error('StreamProvider - Unknown response id')
-  delete this._payloads[id]
-  var payload = data[0]
-  var callback = data[1]
-
-  // logging
-  var res = Array.isArray(response) ? response : [response]
-  // ;(Array.isArray(payload) ? payload : [payload]).forEach(function(payload, index){
-  //   console.log('plugin response:', payload.id, payload.method, payload.params, '->', res[index].result)
-  // })
-
-  callback(null, response)
-}
-
-// stream plumbing
-
-StreamProvider.prototype._read = noop
-
-StreamProvider.prototype._write = function(msg, encoding, cb){
-  this._onResponse(msg)
-  cb()
-}
-
-// util
-
-function noop(){}
\ No newline at end of file
diff --git a/app/scripts/popup.js b/app/scripts/popup.js
index e9ca7cd71..4fa6e1127 100644
--- a/app/scripts/popup.js
+++ b/app/scripts/popup.js
@@ -7,7 +7,7 @@ const MetaMaskUi = require('../../ui')
 const MetaMaskUiCss = require('../../ui/css')
 const injectCss = require('inject-css')
 const PortStream = require('./lib/port-stream.js')
-const StreamProvider = require('./lib/stream-provider.js')
+const StreamProvider = require('web3-stream-provider')
 const setupMultiplex = require('./lib/stream-utils.js').setupMultiplex
 
 // setup app