aiosafe: define user visible exception class

electrum/gui/qt/channels_list.py

@@ -113,9 +113,7 @@ class ChannelsList(MyTreeWidget):
         self.main_window.protect(self.open_channel, (connect_contents, local_amt, push_amt))
 
     def open_channel(self, *args, **kwargs):
-        import traceback, sys
         try:
             self.parent.wallet.lnworker.open_channel(*args, **kwargs)
         except Exception as e:
-            traceback.print_exc(file=sys.stderr)
             self.parent.show_error('Cannot open channel: %s' % str(e))

electrum/lnbase.py

@@ -21,7 +21,7 @@ from . import ecc
 from .ecc import sig_string_from_r_and_s, get_r_and_s_from_sig_string
 from .crypto import sha256
 from . import constants
-from .util import PrintError, bh2u, print_error, bfh, aiosafe
+from .util import PrintError, bh2u, print_error, bfh, log_exceptions
 from .transaction import Transaction, TxOutput
 from .lnonion import new_onion_packet, OnionHopsDataSingle, OnionPerHop, decode_onion_error, ONION_FAILURE_CODE_MAP
 from .lnaddr import lndecode
@@ -524,6 +524,7 @@ class Peer(PrintError):
         per_commitment_secret_seed = keypair_generator(LnKeyFamily.REVOCATION_ROOT).privkey
         return local_config, per_commitment_secret_seed
 
+    @log_exceptions
     async def channel_establishment_flow(self, password, funding_sat, push_msat, temp_channel_id):
         await self.initialized
         local_config, per_commitment_secret_seed = self.make_local_config(funding_sat, push_msat, LOCAL)