add wallet backup to coin install

lib/blockchain/dash.js

@@ -19,5 +19,6 @@ function setup (dataDir) {
 function buildConfig () {
   return `rpcuser=lamassuserver
 rpcpassword=${common.randomPass()}
-dbcache=500`
+dbcache=500
+keypool=10000`
 }

lib/blockchain/install.js

@@ -1,6 +1,7 @@
 const fs = require('fs')
 const path = require('path')
 const process = require('process')
+const os = require('os')
 
 const makeDir = require('make-dir')
 const inquirer = require('inquirer')
@@ -55,6 +56,12 @@ function processCryptos (codes) {
   const selectedCryptos = _.map(code => _.find(['code', code], cryptos), codes)
   _.forEach(setupCrypto, selectedCryptos)
   common.es('sudo service supervisor restart')
+
+  const blockchainDir = coinUtils.blockchainDir()
+  const backupDir = path.resolve(os.homedir(), 'backups')
+  const rsyncCmd = `echo "@daily rsync -r --prune-empty-dirs --include='*/' --include='wallet.dat' --exclude='*' ${blockchainDir} ${backupDir} > /dev/null" | crontab -`
+  common.es(rsyncCmd)
+
   logger.info('Installation complete.')
 }
 

lib/blockchain/zcash.js

@@ -29,5 +29,6 @@ function buildConfig () {
 addnode=mainnet.z.cash
 rpcuser=lamassuserver
 rpcpassword=${common.randomPass()}
-dbcache=500`
+dbcache=500
+keypool=10000`
 }

lib/coin-utils.js

@@ -52,7 +52,7 @@ const CRYPTO_CURRENCIES = [
   }
 ]
 
-module.exports = {buildUrl, cryptoDir, configPath, cryptoCurrencies, getCryptoCurrency}
+module.exports = {buildUrl, cryptoDir, blockchainDir, configPath, cryptoCurrencies, getCryptoCurrency}
 
 function getCryptoCurrency (cryptoCode) {
   const cryptoCurrency = _.find(['cryptoCode', cryptoCode], CRYPTO_CURRENCIES)
@@ -75,10 +75,13 @@ function buildUrl (cryptoCode, address) {
   }
 }
 
+function blockchainDir () {
+  return options.blockchainDir
+}
+
 function cryptoDir (cryptoRec) {
   const code = cryptoRec.code
-  const blockchainDir = options.blockchainDir
-  return path.resolve(blockchainDir, code)
+  return path.resolve(blockchainDir(), code)
 }
 
 function configPath (cryptoRec) {

package.json

@@ -68,7 +68,8 @@
     "lamassu-mnemonic": "./bin/lamassu-mnemonic",
     "lamassu-cancel": "./bin/lamassu-cancel",
     "lamassu-nuke-db": "./bin/lamassu-nuke-db",
-    "lamassu-coins": "./bin/lamassu-coins"
+    "lamassu-coins": "./bin/lamassu-coins",
+    "lamassu-backup-wallet": "./bin/lamassu-backup-wallet"
   },
   "scripts": {
     "start": "node bin/lamassu-server",