simplify locking syntax

lib/server.js

@@ -91,6 +91,11 @@ WalletService.getInstanceWithAuth = function(opts, cb) {
   });
 };
 
+WalletService.prototype._runLocked = function(cb, task) {
+  $.checkState(this.walletId);
+  this.lock.runLocked(this.walletId, cb, task);
+};
+
 
 /**
  * Creates a new wallet.
@@ -193,7 +198,7 @@ WalletService.prototype.replaceTemporaryRequestKey = function(opts, cb) {
   if (opts.isTemporaryRequestKey)
     return cb(new ClientError('Bad arguments'));
 
-  self.lock.runLocked(self.walletId, cb, function(cb) {
+  self._runLocked(cb, function(cb) {
     self.storage.fetchWallet(self.walletId, function(err, wallet) {
       if (err) return cb(err);
 
@@ -301,7 +306,8 @@ WalletService.prototype.joinWallet = function(opts, cb) {
   if (_.isEmpty(opts.name))
     return cb(new ClientError('Invalid copayer name'));
 
-  self.lock.runLocked(opts.walletId, cb, function(cb) {
+  self.walletId = opts.walletId;
+  self._runLocked(cb, function(cb) {
     self.storage.fetchWallet(opts.walletId, function(err, wallet) {
 
       if (err) return cb(err);
@@ -360,7 +366,7 @@ WalletService.prototype.joinWallet = function(opts, cb) {
 WalletService.prototype.createAddress = function(opts, cb) {
   var self = this;
 
-  self.lock.runLocked(self.walletId, cb, function(cb) {
+  self._runLocked(cb, function(cb) {
     self.getWallet({}, function(err, wallet) {
       if (err) return cb(err);
       if (!wallet.isComplete())
@@ -615,7 +621,7 @@ WalletService.prototype.createTx = function(opts, cb) {
   if (!Utils.checkRequired(opts, ['toAddress', 'amount', 'proposalSignature']))
     return cb(new ClientError('Required argument missing'));
 
-  self.lock.runLocked(self.walletId, cb, function(cb) {
+  self._runLocked(cb, function(cb) {
     self.getWallet({}, function(err, wallet) {
       if (err) return cb(err);
       if (!wallet.isComplete()) return cb(new ClientError('Wallet is not complete'));
@@ -705,7 +711,7 @@ WalletService.prototype.getTx = function(opts, cb) {
 WalletService.prototype.removeWallet = function(opts, cb) {
   var self = this;
 
-  self.lock.runLocked(self.walletId, cb, function(cb) {
+  self._runLocked(cb, function(cb) {
     self.storage.removeWallet(self.walletId, cb);
   });
 };
@@ -723,7 +729,7 @@ WalletService.prototype.removePendingTx = function(opts, cb) {
   if (!Utils.checkRequired(opts, ['txProposalId']))
     return cb(new ClientError('Required argument missing'));
 
-  self.lock.runLocked(self.walletId, cb, function(cb) {
+  self._runLocked(cb, function(cb) {
 
     self.getTx({
       txProposalId: opts.txProposalId,
@@ -1181,7 +1187,7 @@ WalletService.prototype.scan = function(opts, cb) {
   };
 
 
-  self.lock.runLocked(self.walletId, cb, function(cb) {
+  self._runLocked(cb, function(cb) {
     self.getWallet({}, function(err, wallet) {
       if (err) return cb(err);
       if (!wallet.isComplete()) return cb(new ClientError('Wallet is not complete'));