ln gossip: don't put own channels into db; always pass them to fn calls

Previously we would put fake chan announcement and fake outgoing chan upd
for own channels into db (to make path finding work). See Peer.add_own_channel().
Now, instead of above, we pass a "my_channels" param to the relevant ChannelDB methods.

electrum/channel_db.py

@@ -39,9 +39,11 @@ from .util import bh2u, profiler, get_headers_dir, bfh, is_ip_address, list_enab
 from .logging import Logger
 from .lnutil import LN_GLOBAL_FEATURES_KNOWN_SET, LNPeerAddr, format_short_channel_id, ShortChannelID
 from .lnverifier import LNChannelVerifier, verify_sig_for_channel_update
+from .lnmsg import decode_msg
 
 if TYPE_CHECKING:
     from .network import Network
+    from .lnchannel import Channel
 
 
 class UnknownEvenFeatureBits(Exception): pass
@@ -63,7 +65,7 @@ class ChannelInfo(NamedTuple):
     capacity_sat: Optional[int]
 
     @staticmethod
-    def from_msg(payload):
+    def from_msg(payload: dict) -> 'ChannelInfo':
         features = int.from_bytes(payload['features'], 'big')
         validate_features(features)
         channel_id = payload['short_channel_id']
@@ -78,6 +80,11 @@ class ChannelInfo(NamedTuple):
             capacity_sat = capacity_sat
         )
 
+    @staticmethod
+    def from_raw_msg(raw: bytes) -> 'ChannelInfo':
+        payload_dict = decode_msg(raw)[1]
+        return ChannelInfo.from_msg(payload_dict)
+
 
 class Policy(NamedTuple):
     key: bytes
@@ -91,7 +98,7 @@ class Policy(NamedTuple):
     timestamp: int
 
     @staticmethod
-    def from_msg(payload):
+    def from_msg(payload: dict) -> 'Policy':
         return Policy(
             key                         = payload['short_channel_id'] + payload['start_node'],
             cltv_expiry_delta           = int.from_bytes(payload['cltv_expiry_delta'], "big"),
@@ -248,11 +255,11 @@ class ChannelDB(SqlDB):
         self.ca_verifier = LNChannelVerifier(network, self)
         # initialized in load_data
         self._channels = {}  # type: Dict[bytes, ChannelInfo]
-        self._policies = {}
+        self._policies = {}  # type: Dict[Tuple[bytes, bytes], Policy]  # (node_id, scid) -> Policy
         self._nodes = {}
         # node_id -> (host, port, ts)
         self._addresses = defaultdict(set)  # type: Dict[bytes, Set[Tuple[str, int, int]]]
-        self._channels_for_node = defaultdict(set)
+        self._channels_for_node = defaultdict(set)  # type: Dict[bytes, Set[ShortChannelID]]
         self.data_loaded = asyncio.Event()
         self.network = network # only for callback
 
@@ -495,17 +502,6 @@ class ChannelDB(SqlDB):
         self.logger.debug("on_node_announcement: %d/%d"%(len(new_nodes), len(msg_payloads)))
         self.update_counts()
 
-    def get_routing_policy_for_channel(self, start_node_id: bytes,
-                                       short_channel_id: bytes) -> Optional[Policy]:
-        if not start_node_id or not short_channel_id: return None
-        channel_info = self.get_channel_info(short_channel_id)
-        if channel_info is not None:
-            return self.get_policy_for_node(short_channel_id, start_node_id)
-        msg = self._channel_updates_for_private_channels.get((start_node_id, short_channel_id))
-        if not msg:
-            return None
-        return Policy.from_msg(msg) # won't actually be written to DB
-
     def get_old_policies(self, delta):
         now = int(time.time())
         return list(k for k, v in list(self._policies.items()) if v.timestamp <= now - delta)
@@ -587,12 +583,56 @@ class ChannelDB(SqlDB):
                 out.add(short_channel_id)
         self.logger.info(f'semi-orphaned: {len(out)}')
 
-    def get_policy_for_node(self, short_channel_id: bytes, node_id: bytes) -> Optional['Policy']:
-        return self._policies.get((node_id, short_channel_id))
-
-    def get_channel_info(self, channel_id: bytes) -> ChannelInfo:
-        return self._channels.get(channel_id)
-
-    def get_channels_for_node(self, node_id) -> Set[bytes]:
-        """Returns the set of channels that have node_id as one of the endpoints."""
-        return self._channels_for_node.get(node_id) or set()
+    def get_policy_for_node(self, short_channel_id: bytes, node_id: bytes, *,
+                            my_channels: Dict[ShortChannelID, 'Channel'] = None) -> Optional['Policy']:
+        channel_info = self.get_channel_info(short_channel_id)
+        if channel_info is not None:  # publicly announced channel
+            policy = self._policies.get((node_id, short_channel_id))
+            if policy:
+                return policy
+        else:  # private channel
+            chan_upd_dict = self._channel_updates_for_private_channels.get((node_id, short_channel_id))
+            if chan_upd_dict:
+                return Policy.from_msg(chan_upd_dict)
+        # check if it's one of our own channels
+        if not my_channels:
+            return
+        chan = my_channels.get(short_channel_id)  # type: Optional[Channel]
+        if not chan:
+            return
+        if node_id == chan.node_id:  # incoming direction (to us)
+            remote_update_raw = chan.get_remote_update()
+            if not remote_update_raw:
+                return
+            now = int(time.time())
+            remote_update_decoded = decode_msg(remote_update_raw)[1]
+            remote_update_decoded['timestamp'] = now.to_bytes(4, byteorder="big")
+            remote_update_decoded['start_node'] = node_id
+            return Policy.from_msg(remote_update_decoded)
+        elif node_id == chan.get_local_pubkey():  # outgoing direction (from us)
+            local_update_decoded = decode_msg(chan.get_outgoing_gossip_channel_update())[1]
+            local_update_decoded['start_node'] = node_id
+            return Policy.from_msg(local_update_decoded)
+
+    def get_channel_info(self, short_channel_id: bytes, *,
+                         my_channels: Dict[ShortChannelID, 'Channel'] = None) -> Optional[ChannelInfo]:
+        ret = self._channels.get(short_channel_id)
+        if ret:
+            return ret
+        # check if it's one of our own channels
+        if not my_channels:
+            return
+        chan = my_channels.get(short_channel_id)  # type: Optional[Channel]
+        ci = ChannelInfo.from_raw_msg(chan.construct_channel_announcement_without_sigs())
+        return ci._replace(capacity_sat=chan.constraints.capacity)
+
+    def get_channels_for_node(self, node_id: bytes, *,
+                              my_channels: Dict[ShortChannelID, 'Channel'] = None) -> Set[bytes]:
+        """Returns the set of short channel IDs where node_id is one of the channel participants."""
+        relevant_channels = self._channels_for_node.get(node_id) or set()
+        relevant_channels = set(relevant_channels)  # copy
+        # add our own channels  # TODO maybe slow?
+        for chan in (my_channels.values() or []):
+            if node_id in (chan.node_id, chan.get_local_pubkey()):
+                relevant_channels.add(chan.short_channel_id)
+        return relevant_channels

electrum/lnchannel.py

@@ -32,13 +32,14 @@ import time
 import threading
 
 from . import ecc
+from . import constants
 from .util import bfh, bh2u
 from .bitcoin import redeem_script_to_address
 from .crypto import sha256, sha256d
 from .transaction import Transaction, PartialTransaction
 from .logging import Logger
-
 from .lnonion import decode_onion_error
+from . import lnutil
 from .lnutil import (Outpoint, LocalConfig, RemoteConfig, Keypair, OnlyPubkeyKeypair, ChannelConstraints,
                     get_per_commitment_secret_from_seed, secret_to_pubkey, derive_privkey, make_closing_tx,
                     sign_and_get_sig_string, RevocationStore, derive_blinded_pubkey, Direction, derive_pubkey,
@@ -47,10 +48,10 @@ from .lnutil import (Outpoint, LocalConfig, RemoteConfig, Keypair, OnlyPubkeyKey
                     funding_output_script, SENT, RECEIVED, LOCAL, REMOTE, HTLCOwner, make_commitment_outputs,
                     ScriptHtlc, PaymentFailure, calc_onchain_fees, RemoteMisbehaving, make_htlc_output_witness_script,
                     ShortChannelID, map_htlcs_to_ctx_output_idxs)
-from .lnutil import FeeUpdate
 from .lnsweep import create_sweeptxs_for_our_ctx, create_sweeptxs_for_their_ctx
 from .lnsweep import create_sweeptx_for_their_revoked_htlc, SweepInfo
 from .lnhtlc import HTLCManager
+from .lnmsg import encode_msg, decode_msg
 
 if TYPE_CHECKING:
     from .lnworker import LNWallet
@@ -136,7 +137,6 @@ class Channel(Logger):
         self.funding_outpoint = state["funding_outpoint"]
         self.node_id = bfh(state["node_id"])
         self.short_channel_id = ShortChannelID.normalize(state["short_channel_id"])
-        self.short_channel_id_predicted = self.short_channel_id
         self.onion_keys = state['onion_keys']
         self.data_loss_protect_remote_pcp = state['data_loss_protect_remote_pcp']
         self.hm = HTLCManager(log=state['log'], initial_feerate=initial_feerate)
@@ -144,6 +144,7 @@ class Channel(Logger):
         self.peer_state = peer_states.DISCONNECTED
         self.sweep_info = {}  # type: Dict[str, Dict[str, SweepInfo]]
         self._outgoing_channel_update = None  # type: Optional[bytes]
+        self._chan_ann_without_sigs = None  # type: Optional[bytes]
         self.revocation_store = RevocationStore(state["revocation_store"])
 
     def set_onion_key(self, key, value):
@@ -158,12 +159,77 @@ class Channel(Logger):
     def get_data_loss_protect_remote_pcp(self, key):
         return self.data_loss_protect_remote_pcp.get(key)
 
-    def set_remote_update(self, raw):
+    def get_local_pubkey(self) -> bytes:
+        if not self.lnworker:
+            raise Exception('lnworker not set for channel!')
+        return self.lnworker.node_keypair.pubkey
+
+    def set_remote_update(self, raw: bytes) -> None:
         self.storage['remote_update'] = raw.hex()
 
-    def get_remote_update(self):
+    def get_remote_update(self) -> Optional[bytes]:
         return bfh(self.storage.get('remote_update')) if self.storage.get('remote_update') else None
 
+    def get_outgoing_gossip_channel_update(self) -> bytes:
+        if self._outgoing_channel_update is not None:
+            return self._outgoing_channel_update
+        if not self.lnworker:
+            raise Exception('lnworker not set for channel!')
+        sorted_node_ids = list(sorted([self.node_id, self.get_local_pubkey()]))
+        channel_flags = b'\x00' if sorted_node_ids[0] == self.get_local_pubkey() else b'\x01'
+        now = int(time.time())
+        htlc_maximum_msat = min(self.config[REMOTE].max_htlc_value_in_flight_msat, 1000 * self.constraints.capacity)
+
+        chan_upd = encode_msg(
+            "channel_update",
+            short_channel_id=self.short_channel_id,
+            channel_flags=channel_flags,
+            message_flags=b'\x01',
+            cltv_expiry_delta=lnutil.NBLOCK_OUR_CLTV_EXPIRY_DELTA.to_bytes(2, byteorder="big"),
+            htlc_minimum_msat=self.config[REMOTE].htlc_minimum_msat.to_bytes(8, byteorder="big"),
+            htlc_maximum_msat=htlc_maximum_msat.to_bytes(8, byteorder="big"),
+            fee_base_msat=lnutil.OUR_FEE_BASE_MSAT.to_bytes(4, byteorder="big"),
+            fee_proportional_millionths=lnutil.OUR_FEE_PROPORTIONAL_MILLIONTHS.to_bytes(4, byteorder="big"),
+            chain_hash=constants.net.rev_genesis_bytes(),
+            timestamp=now.to_bytes(4, byteorder="big"),
+        )
+        sighash = sha256d(chan_upd[2 + 64:])
+        sig = ecc.ECPrivkey(self.lnworker.node_keypair.privkey).sign(sighash, ecc.sig_string_from_r_and_s)
+        message_type, payload = decode_msg(chan_upd)
+        payload['signature'] = sig
+        chan_upd = encode_msg(message_type, **payload)
+
+        self._outgoing_channel_update = chan_upd
+        return chan_upd
+
+    def construct_channel_announcement_without_sigs(self) -> bytes:
+        if self._chan_ann_without_sigs is not None:
+            return self._chan_ann_without_sigs
+        if not self.lnworker:
+            raise Exception('lnworker not set for channel!')
+
+        bitcoin_keys = [self.config[REMOTE].multisig_key.pubkey,
+                        self.config[LOCAL].multisig_key.pubkey]
+        node_ids = [self.node_id, self.get_local_pubkey()]
+        sorted_node_ids = list(sorted(node_ids))
+        if sorted_node_ids != node_ids:
+            node_ids = sorted_node_ids
+            bitcoin_keys.reverse()
+
+        chan_ann = encode_msg("channel_announcement",
+            len=0,
+            features=b'',
+            chain_hash=constants.net.rev_genesis_bytes(),
+            short_channel_id=self.short_channel_id,
+            node_id_1=node_ids[0],
+            node_id_2=node_ids[1],
+            bitcoin_key_1=bitcoin_keys[0],
+            bitcoin_key_2=bitcoin_keys[1]
+        )
+
+        self._chan_ann_without_sigs = chan_ann
+        return chan_ann
+
     def set_short_channel_id(self, short_id):
         self.short_channel_id = short_id
         self.storage["short_channel_id"] = short_id

electrum/lnpeer.py

@@ -953,112 +953,25 @@ class Peer(Logger):
         assert chan.config[LOCAL].funding_locked_received
         chan.set_state(channel_states.OPEN)
         self.network.trigger_callback('channel', chan)
-        self.add_own_channel(chan)
+        # peer may have sent us a channel update for the incoming direction previously
+        pending_channel_update = self.orphan_channel_updates.get(chan.short_channel_id)
+        if pending_channel_update:
+            chan.set_remote_update(pending_channel_update['raw'])
         self.logger.info(f"CHANNEL OPENING COMPLETED for {scid}")
         forwarding_enabled = self.network.config.get('lightning_forward_payments', False)
         if forwarding_enabled:
             # send channel_update of outgoing edge to peer,
             # so that channel can be used to to receive payments
             self.logger.info(f"sending channel update for outgoing edge of {scid}")
-            chan_upd = self.get_outgoing_gossip_channel_update_for_chan(chan)
+            chan_upd = chan.get_outgoing_gossip_channel_update()
             self.transport.send_bytes(chan_upd)
 
-    def add_own_channel(self, chan):
-        # add channel to database
-        bitcoin_keys = [chan.config[LOCAL].multisig_key.pubkey, chan.config[REMOTE].multisig_key.pubkey]
-        sorted_node_ids = list(sorted(self.node_ids))
-        if sorted_node_ids != self.node_ids:
-            bitcoin_keys.reverse()
-        # note: we inject a channel announcement, and a channel update (for outgoing direction)
-        # This is atm needed for
-        # - finding routes
-        # - the ChanAnn is needed so that we can anchor to it a future ChanUpd
-        #   that the remote sends, even if the channel was not announced
-        #   (from BOLT-07: "MAY create a channel_update to communicate the channel
-        #    parameters to the final node, even though the channel has not yet been announced")
-        self.channel_db.add_channel_announcement(
-            {
-                "short_channel_id": chan.short_channel_id,
-                "node_id_1": sorted_node_ids[0],
-                "node_id_2": sorted_node_ids[1],
-                'chain_hash': constants.net.rev_genesis_bytes(),
-                'len': b'\x00\x00',
-                'features': b'',
-                'bitcoin_key_1': bitcoin_keys[0],
-                'bitcoin_key_2': bitcoin_keys[1]
-            },
-            trusted=True)
-        # only inject outgoing direction:
-        chan_upd_bytes = self.get_outgoing_gossip_channel_update_for_chan(chan)
-        chan_upd_payload = decode_msg(chan_upd_bytes)[1]
-        self.channel_db.add_channel_update(chan_upd_payload)
-        # peer may have sent us a channel update for the incoming direction previously
-        pending_channel_update = self.orphan_channel_updates.get(chan.short_channel_id)
-        if pending_channel_update:
-            chan.set_remote_update(pending_channel_update['raw'])
-        # add remote update with a fresh timestamp
-        if chan.get_remote_update():
-            now = int(time.time())
-            remote_update_decoded = decode_msg(chan.get_remote_update())[1]
-            remote_update_decoded['timestamp'] = now.to_bytes(4, byteorder="big")
-            self.channel_db.add_channel_update(remote_update_decoded)
-
-    def get_outgoing_gossip_channel_update_for_chan(self, chan: Channel) -> bytes:
-        if chan._outgoing_channel_update is not None:
-            return chan._outgoing_channel_update
-        sorted_node_ids = list(sorted(self.node_ids))
-        channel_flags = b'\x00' if sorted_node_ids[0] == privkey_to_pubkey(self.privkey) else b'\x01'
-        now = int(time.time())
-        htlc_maximum_msat = min(chan.config[REMOTE].max_htlc_value_in_flight_msat, 1000 * chan.constraints.capacity)
-
-        chan_upd = encode_msg(
-            "channel_update",
-            short_channel_id=chan.short_channel_id,
-            channel_flags=channel_flags,
-            message_flags=b'\x01',
-            cltv_expiry_delta=lnutil.NBLOCK_OUR_CLTV_EXPIRY_DELTA.to_bytes(2, byteorder="big"),
-            htlc_minimum_msat=chan.config[REMOTE].htlc_minimum_msat.to_bytes(8, byteorder="big"),
-            htlc_maximum_msat=htlc_maximum_msat.to_bytes(8, byteorder="big"),
-            fee_base_msat=lnutil.OUR_FEE_BASE_MSAT.to_bytes(4, byteorder="big"),
-            fee_proportional_millionths=lnutil.OUR_FEE_PROPORTIONAL_MILLIONTHS.to_bytes(4, byteorder="big"),
-            chain_hash=constants.net.rev_genesis_bytes(),
-            timestamp=now.to_bytes(4, byteorder="big"),
-        )
-        sighash = sha256d(chan_upd[2 + 64:])
-        sig = ecc.ECPrivkey(self.privkey).sign(sighash, sig_string_from_r_and_s)
-        message_type, payload = decode_msg(chan_upd)
-        payload['signature'] = sig
-        chan_upd = encode_msg(message_type, **payload)
-
-        chan._outgoing_channel_update = chan_upd
-        return chan_upd
-
     def send_announcement_signatures(self, chan: Channel):
-
-        bitcoin_keys = [chan.config[REMOTE].multisig_key.pubkey,
-                        chan.config[LOCAL].multisig_key.pubkey]
-
-        sorted_node_ids = list(sorted(self.node_ids))
-        if sorted_node_ids != self.node_ids:
-            node_ids = sorted_node_ids
-            bitcoin_keys.reverse()
-        else:
-            node_ids = self.node_ids
-
-        chan_ann = encode_msg("channel_announcement",
-            len=0,
-            #features not set (defaults to zeros)
-            chain_hash=constants.net.rev_genesis_bytes(),
-            short_channel_id=chan.short_channel_id,
-            node_id_1=node_ids[0],
-            node_id_2=node_ids[1],
-            bitcoin_key_1=bitcoin_keys[0],
-            bitcoin_key_2=bitcoin_keys[1]
-        )
-        to_hash = chan_ann[256+2:]
-        h = sha256d(to_hash)
-        bitcoin_signature = ecc.ECPrivkey(chan.config[LOCAL].multisig_key.privkey).sign(h, sig_string_from_r_and_s)
-        node_signature = ecc.ECPrivkey(self.privkey).sign(h, sig_string_from_r_and_s)
+        chan_ann = chan.construct_channel_announcement_without_sigs()
+        preimage = chan_ann[256+2:]
+        msg_hash = sha256d(preimage)
+        bitcoin_signature = ecc.ECPrivkey(chan.config[LOCAL].multisig_key.privkey).sign(msg_hash, sig_string_from_r_and_s)
+        node_signature = ecc.ECPrivkey(self.privkey).sign(msg_hash, sig_string_from_r_and_s)
         self.send_message("announcement_signatures",
             channel_id=chan.channel_id,
             short_channel_id=chan.short_channel_id,
@@ -1066,7 +979,7 @@ class Peer(Logger):
             bitcoin_signature=bitcoin_signature
         )
 
-        return h, node_signature, bitcoin_signature
+        return msg_hash, node_signature, bitcoin_signature
 
     def on_update_fail_htlc(self, payload):
         channel_id = payload["channel_id"]
@@ -1255,7 +1168,7 @@ class Peer(Logger):
             reason = OnionRoutingFailureMessage(code=OnionFailureCode.UNKNOWN_NEXT_PEER, data=b'')
             await self.fail_htlc(chan, htlc.htlc_id, onion_packet, reason)
             return
-        outgoing_chan_upd = self.get_outgoing_gossip_channel_update_for_chan(next_chan)[2:]
+        outgoing_chan_upd = next_chan.get_outgoing_gossip_channel_update()[2:]
         outgoing_chan_upd_len = len(outgoing_chan_upd).to_bytes(2, byteorder="big")
         if next_chan.get_state() != channel_states.OPEN:
             self.logger.info(f"cannot forward htlc. next_chan not OPEN: {next_chan_scid} in state {next_chan.get_state()}")

electrum/lnrouter.py

@@ -129,18 +129,20 @@ class LNPathFinder(Logger):
         self.blacklist.add(short_channel_id)
 
     def _edge_cost(self, short_channel_id: bytes, start_node: bytes, end_node: bytes,
-                   payment_amt_msat: int, ignore_costs=False, is_mine=False) -> Tuple[float, int]:
+                   payment_amt_msat: int, ignore_costs=False, is_mine=False, *,
+                   my_channels: Dict[ShortChannelID, 'Channel'] = None) -> Tuple[float, int]:
         """Heuristic cost of going through a channel.
         Returns (heuristic_cost, fee_for_edge_msat).
         """
-        channel_info = self.channel_db.get_channel_info(short_channel_id)
+        channel_info = self.channel_db.get_channel_info(short_channel_id, my_channels=my_channels)
         if channel_info is None:
             return float('inf'), 0
-        channel_policy = self.channel_db.get_policy_for_node(short_channel_id, start_node)
+        channel_policy = self.channel_db.get_policy_for_node(short_channel_id, start_node, my_channels=my_channels)
         if channel_policy is None:
             return float('inf'), 0
         # channels that did not publish both policies often return temporary channel failure
-        if self.channel_db.get_policy_for_node(short_channel_id, end_node) is None and not is_mine:
+        if self.channel_db.get_policy_for_node(short_channel_id, end_node, my_channels=my_channels) is None \
+                and not is_mine:
             return float('inf'), 0
         if channel_policy.is_disabled():
             return float('inf'), 0
@@ -164,8 +166,9 @@ class LNPathFinder(Logger):
 
     @profiler
     def find_path_for_payment(self, nodeA: bytes, nodeB: bytes,
-                              invoice_amount_msat: int,
-                              my_channels: List['Channel']=None) -> Sequence[Tuple[bytes, bytes]]:
+                              invoice_amount_msat: int, *,
+                              my_channels: Dict[ShortChannelID, 'Channel'] = None) \
+            -> Optional[Sequence[Tuple[bytes, bytes]]]:
         """Return a path from nodeA to nodeB.
 
         Returns a list of (node_id, short_channel_id) representing a path.
@@ -175,8 +178,7 @@ class LNPathFinder(Logger):
         assert type(nodeA) is bytes
         assert type(nodeB) is bytes
         assert type(invoice_amount_msat) is int
-        if my_channels is None: my_channels = []
-        my_channels = {chan.short_channel_id: chan for chan in my_channels}
+        if my_channels is None: my_channels = {}
 
         # FIXME paths cannot be longer than 20 edges (onion packet)...
 
@@ -204,7 +206,8 @@ class LNPathFinder(Logger):
                 end_node=edge_endnode,
                 payment_amt_msat=amount_msat,
                 ignore_costs=(edge_startnode == nodeA),
-                is_mine=is_mine)
+                is_mine=is_mine,
+                my_channels=my_channels)
             alt_dist_to_neighbour = distance_from_start[edge_endnode] + edge_cost
             if alt_dist_to_neighbour < distance_from_start[edge_startnode]:
                 distance_from_start[edge_startnode] = alt_dist_to_neighbour
@@ -222,11 +225,11 @@ class LNPathFinder(Logger):
                 # so instead of decreasing priorities, we add items again into the queue.
                 # so there are duplicates in the queue, that we discard now:
                 continue
-            for edge_channel_id in self.channel_db.get_channels_for_node(edge_endnode):
+            for edge_channel_id in self.channel_db.get_channels_for_node(edge_endnode, my_channels=my_channels):
                 assert isinstance(edge_channel_id, bytes)
                 if edge_channel_id in self.blacklist:
                     continue
-                channel_info = self.channel_db.get_channel_info(edge_channel_id)
+                channel_info = self.channel_db.get_channel_info(edge_channel_id, my_channels=my_channels)
                 edge_startnode = channel_info.node2_id if channel_info.node1_id == edge_endnode else channel_info.node1_id
                 inspect_edge()
         else:
@@ -241,14 +244,17 @@ class LNPathFinder(Logger):
             edge_startnode = edge_endnode
         return path
 
-    def create_route_from_path(self, path, from_node_id: bytes) -> LNPaymentRoute:
+    def create_route_from_path(self, path, from_node_id: bytes, *,
+                               my_channels: Dict[ShortChannelID, 'Channel'] = None) -> LNPaymentRoute:
         assert isinstance(from_node_id, bytes)
         if path is None:
             raise Exception('cannot create route from None path')
         route = []
         prev_node_id = from_node_id
         for node_id, short_channel_id in path:
-            channel_policy = self.channel_db.get_routing_policy_for_channel(prev_node_id, short_channel_id)
+            channel_policy = self.channel_db.get_policy_for_node(short_channel_id=short_channel_id,
+                                                                 node_id=prev_node_id,
+                                                                 my_channels=my_channels)
             if channel_policy is None:
                 raise NoChannelPolicy(short_channel_id)
             route.append(RouteEdge.from_channel_policy(channel_policy, short_channel_id, node_id))

electrum/lnworker.py

@@ -942,16 +942,20 @@ class LNWallet(LNWorker):
         random.shuffle(r_tags)
         with self.lock:
             channels = list(self.channels.values())
+        scid_to_my_channels = {chan.short_channel_id: chan for chan in channels
+                               if chan.short_channel_id is not None}
         for private_route in r_tags:
             if len(private_route) == 0:
                 continue
             if len(private_route) > NUM_MAX_EDGES_IN_PAYMENT_PATH:
                 continue
             border_node_pubkey = private_route[0][0]
-            path = self.network.path_finder.find_path_for_payment(self.node_keypair.pubkey, border_node_pubkey, amount_msat, channels)
+            path = self.network.path_finder.find_path_for_payment(self.node_keypair.pubkey, border_node_pubkey, amount_msat,
+                                                                  my_channels=scid_to_my_channels)
             if not path:
                 continue
-            route = self.network.path_finder.create_route_from_path(path, self.node_keypair.pubkey)
+            route = self.network.path_finder.create_route_from_path(path, self.node_keypair.pubkey,
+                                                                    my_channels=scid_to_my_channels)
             # we need to shift the node pubkey by one towards the destination:
             private_route_nodes = [edge[0] for edge in private_route][1:] + [invoice_pubkey]
             private_route_rest = [edge[1:] for edge in private_route]
@@ -961,7 +965,9 @@ class LNWallet(LNWorker):
                 short_channel_id = ShortChannelID(short_channel_id)
                 # if we have a routing policy for this edge in the db, that takes precedence,
                 # as it is likely from a previous failure
-                channel_policy = self.channel_db.get_routing_policy_for_channel(prev_node_id, short_channel_id)
+                channel_policy = self.channel_db.get_policy_for_node(short_channel_id=short_channel_id,
+                                                                     node_id=prev_node_id,
+                                                                     my_channels=scid_to_my_channels)
                 if channel_policy:
                     fee_base_msat = channel_policy.fee_base_msat
                     fee_proportional_millionths = channel_policy.fee_proportional_millionths
@@ -977,10 +983,12 @@ class LNWallet(LNWorker):
             break
         # if could not find route using any hint; try without hint now
         if route is None:
-            path = self.network.path_finder.find_path_for_payment(self.node_keypair.pubkey, invoice_pubkey, amount_msat, channels)
+            path = self.network.path_finder.find_path_for_payment(self.node_keypair.pubkey, invoice_pubkey, amount_msat,
+                                                                  my_channels=scid_to_my_channels)
             if not path:
                 raise NoPathFound()
-            route = self.network.path_finder.create_route_from_path(path, self.node_keypair.pubkey)
+            route = self.network.path_finder.create_route_from_path(path, self.node_keypair.pubkey,
+                                                                    my_channels=scid_to_my_channels)
             if not is_route_sane_to_use(route, amount_msat, decoded_invoice.get_min_final_cltv_expiry()):
                 self.logger.info(f"rejecting insane route {route}")
                 raise NoPathFound()
@@ -1099,6 +1107,8 @@ class LNWallet(LNWorker):
         routing_hints = []
         with self.lock:
             channels = list(self.channels.values())
+        scid_to_my_channels = {chan.short_channel_id: chan for chan in channels
+                               if chan.short_channel_id is not None}
         # note: currently we add *all* our channels; but this might be a privacy leak?
         for chan in channels:
             # check channel is open
@@ -1110,7 +1120,7 @@ class LNWallet(LNWorker):
                 continue
             chan_id = chan.short_channel_id
             assert isinstance(chan_id, bytes), chan_id
-            channel_info = self.channel_db.get_channel_info(chan_id)
+            channel_info = self.channel_db.get_channel_info(chan_id, my_channels=scid_to_my_channels)
             # note: as a fallback, if we don't have a channel update for the
             # incoming direction of our private channel, we fill the invoice with garbage.
             # the sender should still be able to pay us, but will incur an extra round trip
@@ -1120,7 +1130,8 @@ class LNWallet(LNWorker):
             cltv_expiry_delta = 1  # lnd won't even try with zero
             missing_info = True
             if channel_info:
-                policy = self.channel_db.get_policy_for_node(channel_info.short_channel_id, chan.node_id)
+                policy = self.channel_db.get_policy_for_node(channel_info.short_channel_id, chan.node_id,
+                                                             my_channels=scid_to_my_channels)
                 if policy:
                     fee_base_msat = policy.fee_base_msat
                     fee_proportional_millionths = policy.fee_proportional_millionths

electrum/tests/test_lnpeer.py

@@ -18,7 +18,7 @@ from electrum.lnpeer import Peer
 from electrum.lnutil import LNPeerAddr, Keypair, privkey_to_pubkey
 from electrum.lnutil import LightningPeerConnectionClosed, RemoteMisbehaving
 from electrum.lnutil import PaymentFailure, LnLocalFeatures
-from electrum.lnchannel import channel_states, peer_states
+from electrum.lnchannel import channel_states, peer_states, Channel
 from electrum.lnrouter import LNPathFinder
 from electrum.channel_db import ChannelDB
 from electrum.lnworker import LNWallet, NoPathFound
@@ -77,7 +77,7 @@ class MockWallet:
         return False
 
 class MockLNWallet:
-    def __init__(self, remote_keypair, local_keypair, chan, tx_queue):
+    def __init__(self, remote_keypair, local_keypair, chan: 'Channel', tx_queue):
         self.remote_keypair = remote_keypair
         self.node_keypair = local_keypair
         self.network = MockNetwork(tx_queue)
@@ -88,6 +88,8 @@ class MockLNWallet:
         self.localfeatures = LnLocalFeatures(0)
         self.localfeatures |= LnLocalFeatures.OPTION_DATA_LOSS_PROTECT_OPT
         self.pending_payments = defaultdict(asyncio.Future)
+        chan.lnworker = self
+        chan.node_id = remote_keypair.pubkey
 
     def get_invoice_status(self, key):
         pass
@@ -127,6 +129,7 @@ class MockLNWallet:
     _pay_to_route = LNWallet._pay_to_route
     force_close_channel = LNWallet.force_close_channel
     get_first_timestamp = lambda self: 0
+    payment_completed = LNWallet.payment_completed
 
 class MockTransport:
     def __init__(self, name):
@@ -264,7 +267,7 @@ class TestPeer(ElectrumTestCase):
         pay_req = self.prepare_invoice(w2)
         async def pay():
             result = await LNWallet._pay(w1, pay_req)
-            self.assertEqual(result, True)
+            self.assertTrue(result)
             gath.cancel()
         gath = asyncio.gather(pay(), p1._message_loop(), p2._message_loop())
         async def f():