Merge pull request #752 from mrfelton/fix/remote-lnd-process-lookup

fix(lnd): do not require a single lnd process

app/lib/lnd/util.js

@@ -4,7 +4,6 @@ import axios from 'axios'
 import { promisify } from 'util'
 import { basename, dirname, join, normalize } from 'path'
 import { platform } from 'os'
-import { lookup } from 'ps-node'
 import { app } from 'electron'
 import isDev from 'electron-is-dev'
 import grpc from 'grpc'
@@ -182,27 +181,3 @@ export const createMacaroonCreds = async macaroonPath => {
     callback(null, metadata)
   )
 }
-
-/**
- * Check to see if an LND process is running.
- * @return {Promise} Boolean indicating wether an existing lnd process was found on the host machine.
- */
-export const isLndRunning = () => {
-  return new Promise((resolve, reject) => {
-    mainLog.info('Looking for existing lnd process')
-    lookup({ command: 'lnd' }, (err, results) => {
-      // There was an error checking for the LND process.
-      if (err) {
-        return reject(err)
-      }
-
-      if (!results.length) {
-        // An LND process was found, no need to start our own.
-        mainLog.info('Existing lnd process not found')
-        return resolve(false)
-      }
-      mainLog.info('Found existing lnd process')
-      return resolve(true)
-    })
-  })
-}

app/lib/zap/controller.js

@@ -5,7 +5,6 @@ import pick from 'lodash.pick'
 import Store from 'electron-store'
 import StateMachine from 'javascript-state-machine'
 import { mainLog } from '../utils/log'
-import { isLndRunning } from '../lnd/util'
 
 import LndConfig from '../lnd/config'
 import Lightning from '../lnd/lightning'
@@ -152,22 +151,11 @@ class ZapController {
   onBeforeStartLnd() {
     mainLog.debug('[FSM] onBeforeStartLnd...')
 
-    return isLndRunning().then(res => {
-      if (res) {
-        mainLog.error('lnd already running: %s', res)
-        dialog.showMessageBox({
-          type: 'error',
-          message: 'Unable to start lnd because it is already running.'
-        })
-        return app.quit()
-      }
-
-      mainLog.info('Starting new lnd instance')
-      mainLog.info(' > alias:', this.lndConfig.alias)
-      mainLog.info(' > autopilot:', this.lndConfig.autopilot)
+    mainLog.info('Starting new lnd instance')
+    mainLog.info(' > alias:', this.lndConfig.alias)
+    mainLog.info(' > autopilot:', this.lndConfig.autopilot)
 
-      return this.startNeutrino()
-    })
+    return this.startNeutrino()
   }
 
   onBeforeConnectLnd() {

package.json

@@ -297,7 +297,6 @@
     "lodash.pick": "^4.4.0",
     "moment": "^2.22.2",
     "prop-types": "^15.6.2",
-    "ps-node": "^0.1.6",
     "qrcode.react": "0.8.0",
     "react": "^16.4.2",
     "react-dom": "^16.4.2",

yarn.lock

@@ -3159,10 +3159,6 @@ connect-history-api-fallback@^1.5.0:
   version "1.5.0"
   resolved "https://registry.yarnpkg.com/connect-history-api-fallback/-/connect-history-api-fallback-1.5.0.tgz#b06873934bc5e344fef611a196a6faae0aee015a"
 
-connected-domain@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/connected-domain/-/connected-domain-1.0.0.tgz#bfe77238c74be453a79f0cb6058deeb4f2358e93"
-
 console-browserify@1.1.x, console-browserify@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/console-browserify/-/console-browserify-1.1.0.tgz#f0241c45730a9fc6323b206dbf38edc741d0bb10"
@@ -9604,12 +9600,6 @@ prr@~1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/prr/-/prr-1.0.1.tgz#d3fc114ba06995a45ec6893f484ceb1d78f5f476"
 
-ps-node@^0.1.6:
-  version "0.1.6"
-  resolved "https://registry.yarnpkg.com/ps-node/-/ps-node-0.1.6.tgz#9af67a99d7b1d0132e51a503099d38a8d2ace2c3"
-  dependencies:
-    table-parser "^0.1.3"
-
 pseudomap@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/pseudomap/-/pseudomap-1.0.2.tgz#f052a28da70e618917ef0a8ac34c1ae5a68286b3"
@@ -11524,12 +11514,6 @@ symbol-tree@^3.2.2:
   version "3.2.2"
   resolved "https://registry.yarnpkg.com/symbol-tree/-/symbol-tree-3.2.2.tgz#ae27db38f660a7ae2e1c3b7d1bc290819b8519e6"
 
-table-parser@^0.1.3:
-  version "0.1.3"
-  resolved "https://registry.yarnpkg.com/table-parser/-/table-parser-0.1.3.tgz#0441cfce16a59481684c27d1b5a67ff15a43c7b0"
-  dependencies:
-    connected-domain "^1.0.0"
-
 table@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/table/-/table-4.0.1.tgz#a8116c133fac2c61f4a420ab6cdf5c4d61f0e435"