Merge branch 'master' into feature/trio

libp2p/crypto/ecc.py

@@ -32,7 +32,7 @@ class ECCPublicKey(PublicKey):
         return KeyType.ECC_P256
 
     def verify(self, data: bytes, signature: bytes) -> bool:
-        raise NotImplementedError
+        raise NotImplementedError()
 
 
 class ECCPrivateKey(PrivateKey):
@@ -53,7 +53,7 @@ class ECCPrivateKey(PrivateKey):
         return KeyType.ECC_P256
 
     def sign(self, data: bytes) -> bytes:
-        raise NotImplementedError
+        raise NotImplementedError()
 
     def get_public_key(self) -> PublicKey:
         public_key_impl = keys.get_public_key(self.impl, self.curve)

libp2p/crypto/serialization.py

@@ -20,8 +20,10 @@ def deserialize_public_key(data: bytes) -> PublicKey:
     f = PublicKey.deserialize_from_protobuf(data)
     try:
         deserializer = key_type_to_public_key_deserializer[f.key_type]
-    except KeyError:
-        raise MissingDeserializerError({"key_type": f.key_type, "key": "public_key"})
+    except KeyError as e:
+        raise MissingDeserializerError(
+            {"key_type": f.key_type, "key": "public_key"}
+        ) from e
     return deserializer(f.data)
 
 
@@ -29,6 +31,8 @@ def deserialize_private_key(data: bytes) -> PrivateKey:
     f = PrivateKey.deserialize_from_protobuf(data)
     try:
         deserializer = key_type_to_private_key_deserializer[f.key_type]
-    except KeyError:
-        raise MissingDeserializerError({"key_type": f.key_type, "key": "private_key"})
+    except KeyError as e:
+        raise MissingDeserializerError(
+            {"key_type": f.key_type, "key": "private_key"}
+        ) from e
     return deserializer(f.data)

libp2p/host/basic_host.py

@@ -95,7 +95,7 @@ class BasicHost(IHost):
         :return: all the multiaddr addresses this host is listening to
         """
         # TODO: We don't need "/p2p/{peer_id}" postfix actually.
-        p2p_part = multiaddr.Multiaddr("/p2p/{}".format(self.get_id().pretty()))
+        p2p_part = multiaddr.Multiaddr(f"/p2p/{self.get_id()!s}")
 
         addrs: List[multiaddr.Multiaddr] = []
         for transport in self._network.listeners.values():
@@ -147,7 +147,7 @@ class BasicHost(IHost):
         except MultiselectClientError as error:
             logger.debug("fail to open a stream to peer %s, error=%s", peer_id, error)
             await net_stream.reset()
-            raise StreamFailure("failt to open a stream to peer %s", peer_id) from error
+            raise StreamFailure(f"failed to open a stream to peer {peer_id}") from error
 
         net_stream.set_protocol(selected_protocol)
         return net_stream

libp2p/network/stream/net_stream.py

@@ -47,9 +47,9 @@ class NetStream(INetStream):
         try:
             return await self.muxed_stream.read(n)
         except MuxedStreamEOF as error:
-            raise StreamEOF from error
+            raise StreamEOF() from error
         except MuxedStreamReset as error:
-            raise StreamReset from error
+            raise StreamReset() from error
 
     async def write(self, data: bytes) -> int:
         """
@@ -60,7 +60,7 @@ class NetStream(INetStream):
         try:
             return await self.muxed_stream.write(data)
         except MuxedStreamClosed as error:
-            raise StreamClosed from error
+            raise StreamClosed() from error
 
     async def close(self) -> None:
         """close stream."""

libp2p/network/swarm.py

@@ -171,20 +171,21 @@ class Swarm(Service, INetworkService):
         try:
             secured_conn = await self.upgrader.upgrade_security(raw_conn, peer_id, True)
         except SecurityUpgradeFailure as error:
-            error_msg = "fail to upgrade security for peer %s"
-            logger.debug(error_msg, peer_id)
+            logger.debug("failed to upgrade security for peer %s", peer_id)
             await raw_conn.close()
-            raise SwarmException(error_msg % peer_id) from error
+            raise SwarmException(
+                f"failed to upgrade security for peer {peer_id}"
+            ) from error
 
         logger.debug("upgraded security for peer %s", peer_id)
 
         try:
             muxed_conn = await self.upgrader.upgrade_connection(secured_conn, peer_id)
         except MuxerUpgradeFailure as error:
-            error_msg = "fail to upgrade mux for peer %s"
-            logger.debug(error_msg, peer_id)
+            logger.debug("failed to upgrade mux for peer %s", peer_id)
             await secured_conn.close()
-            raise SwarmException(error_msg % peer_id) from error
+            raise SwarmException(f"failed to upgrade mux for peer {peer_id}") from error
+
         logger.debug("upgraded mux for peer %s", peer_id)
 
         swarm_conn = await self.add_conn(muxed_conn)
@@ -241,8 +242,11 @@ class Swarm(Service, INetworkService):
                         raw_conn, ID(b""), False
                     )
                 except SecurityUpgradeFailure as error:
+                    logger.debug("failed to upgrade security for peer at %s", maddr)
                     await raw_conn.close()
-                    raise SwarmException() from error
+                    raise SwarmException(
+                        f"failed to upgrade security for peer at {maddr}"
+                    ) from error
                 peer_id = secured_conn.get_remote_peer()
 
                 try:
@@ -250,10 +254,11 @@ class Swarm(Service, INetworkService):
                         secured_conn, peer_id
                     )
                 except MuxerUpgradeFailure as error:
-                    error_msg = "fail to upgrade mux for peer %s"
-                    logger.debug(error_msg, peer_id)
+                    logger.debug("fail to upgrade mux for peer %s", peer_id)
                     await secured_conn.close()
-                    raise SwarmException(error_msg % peer_id) from error
+                    raise SwarmException(
+                        f"fail to upgrade mux for peer {peer_id}"
+                    ) from error
                 logger.debug("upgraded mux for peer %s", peer_id)
 
                 await self.add_conn(muxed_conn)
@@ -279,7 +284,7 @@ class Swarm(Service, INetworkService):
                 return True
             except IOError:
                 # Failed. Continue looping.
-                logger.debug("fail to listen on: " + str(maddr))
+                logger.debug("fail to listen on: %s", maddr)
 
         # No maddr succeeded
         return False

libp2p/peer/id.py

@@ -56,7 +56,7 @@ class ID:
         return self._b58_str
 
     def __repr__(self) -> str:
-        return f"<libp2p.peer.id.ID ({self.to_string()})>"
+        return f"<libp2p.peer.id.ID ({self!s})>"
 
     __str__ = pretty = to_string = to_base58
 

libp2p/peer/peerstore.py

@@ -71,7 +71,7 @@ class PeerStore(IPeerStore):
             try:
                 val = self.peer_data_map[peer_id].get_metadata(key)
             except PeerDataError as error:
-                raise PeerStoreError(error)
+                raise PeerStoreError() from error
             return val
         raise PeerStoreError("peer ID not found")
 
@@ -153,8 +153,8 @@ class PeerStore(IPeerStore):
             peer_data = self.peer_data_map[peer_id]
             try:
                 pubkey = peer_data.get_pubkey()
-            except PeerDataError:
-                raise PeerStoreError("peer pubkey not found")
+            except PeerDataError as e:
+                raise PeerStoreError("peer pubkey not found") from e
             return pubkey
         raise PeerStoreError("peer ID not found")
 
@@ -179,8 +179,8 @@ class PeerStore(IPeerStore):
             peer_data = self.peer_data_map[peer_id]
             try:
                 privkey = peer_data.get_privkey()
-            except PeerDataError:
-                raise PeerStoreError("peer privkey not found")
+            except PeerDataError as e:
+                raise PeerStoreError("peer privkey not found") from e
             return privkey
         raise PeerStoreError("peer ID not found")
 

libp2p/protocol_muxer/multiselect.py

@@ -49,7 +49,7 @@ class Multiselect(IMultiselectMuxer):
             try:
                 command = await communicator.read()
             except MultiselectCommunicatorError as error:
-                raise MultiselectError(error)
+                raise MultiselectError() from error
 
             if command == "ls":
                 # TODO: handle ls command
@@ -60,13 +60,13 @@ class Multiselect(IMultiselectMuxer):
                     try:
                         await communicator.write(protocol)
                     except MultiselectCommunicatorError as error:
-                        raise MultiselectError(error)
+                        raise MultiselectError() from error
 
                     return protocol, self.handlers[protocol]
                 try:
                     await communicator.write(PROTOCOL_NOT_FOUND_MSG)
                 except MultiselectCommunicatorError as error:
-                    raise MultiselectError(error)
+                    raise MultiselectError() from error
 
     async def handshake(self, communicator: IMultiselectCommunicator) -> None:
         """
@@ -78,12 +78,12 @@ class Multiselect(IMultiselectMuxer):
         try:
             await communicator.write(MULTISELECT_PROTOCOL_ID)
         except MultiselectCommunicatorError as error:
-            raise MultiselectError(error)
+            raise MultiselectError() from error
 
         try:
             handshake_contents = await communicator.read()
         except MultiselectCommunicatorError as error:
-            raise MultiselectError(error)
+            raise MultiselectError() from error
 
         if not is_valid_handshake(handshake_contents):
             raise MultiselectError(

libp2p/protocol_muxer/multiselect_client.py

@@ -25,12 +25,12 @@ class MultiselectClient(IMultiselectClient):
         try:
             await communicator.write(MULTISELECT_PROTOCOL_ID)
         except MultiselectCommunicatorError as error:
-            raise MultiselectClientError(error)
+            raise MultiselectClientError() from error
 
         try:
             handshake_contents = await communicator.read()
         except MultiselectCommunicatorError as error:
-            raise MultiselectClientError(str(error))
+            raise MultiselectClientError() from error
 
         if not is_valid_handshake(handshake_contents):
             raise MultiselectClientError("multiselect protocol ID mismatch")
@@ -73,18 +73,18 @@ class MultiselectClient(IMultiselectClient):
         try:
             await communicator.write(protocol)
         except MultiselectCommunicatorError as error:
-            raise MultiselectClientError(error)
+            raise MultiselectClientError() from error
 
         try:
             response = await communicator.read()
         except MultiselectCommunicatorError as error:
-            raise MultiselectClientError(str(error))
+            raise MultiselectClientError() from error
 
         if response == protocol:
             return protocol
         if response == PROTOCOL_NOT_FOUND_MSG:
             raise MultiselectClientError("protocol not supported")
-        raise MultiselectClientError("unrecognized response: " + response)
+        raise MultiselectClientError(f"unrecognized response: {response}")
 
 
 def is_valid_handshake(handshake_contents: str) -> bool:

libp2p/pubsub/pubsub.py

@@ -567,10 +567,12 @@ class Pubsub(Service, IPubsub):
             await self.validate_msg(msg_forwarder, msg)
         except ValidationError:
             logger.debug(
-                "Topic validation failed: sender %s sent data %s under topic IDs: %s",
-                f"{base58.b58encode(msg.from_id).decode()}:{msg.seqno.hex()}",
+                "Topic validation failed: sender %s sent data %s under topic IDs: %s %s:%s",
+                msg_forwarder,
                 msg.data.hex(),
                 msg.topicIDs,
+                base58.b58encode(msg.from_id).decode(),
+                msg.seqno.hex(),
             )
             return
 

libp2p/security/insecure/transport.py

@@ -52,13 +52,13 @@ class InsecureSession(BaseSession):
         encoded_msg_bytes = encode_fixedint_prefixed(msg_bytes)
         try:
             await self.write(encoded_msg_bytes)
-        except RawConnError:
-            raise HandshakeFailure("connection closed")
+        except RawConnError as e:
+            raise HandshakeFailure("connection closed") from e
 
         try:
             remote_msg_bytes = await read_fixedint_prefixed(self.conn)
-        except RawConnError:
-            raise HandshakeFailure("connection closed")
+        except RawConnError as e:
+            raise HandshakeFailure("connection closed") from e
         remote_msg = plaintext_pb2.Exchange()
         remote_msg.ParseFromString(remote_msg_bytes)
         received_peer_id = ID(remote_msg.id)
@@ -77,12 +77,12 @@ class InsecureSession(BaseSession):
             received_pubkey = deserialize_public_key(
                 remote_msg.pubkey.SerializeToString()
             )
-        except ValueError:
+        except ValueError as e:
             raise HandshakeFailure(
                 f"unknown `key_type` of remote_msg.pubkey={remote_msg.pubkey}"
-            )
+            ) from e
         except MissingDeserializerError as error:
-            raise HandshakeFailure(error)
+            raise HandshakeFailure() from error
         peer_id_from_received_pubkey = ID.from_pubkey(received_pubkey)
         if peer_id_from_received_pubkey != received_peer_id:
             raise HandshakeFailure(

libp2p/security/secio/transport.py

@@ -131,8 +131,8 @@ class SecureSession(BaseSession):
         msg = await self.conn.read_msg()
         try:
             decrypted_msg = self.remote_encrypter.decrypt_if_valid(msg)
-        except InvalidMACException:
-            raise DecryptionFailedException
+        except InvalidMACException as e:
+            raise DecryptionFailedException() from e
         return decrypted_msg
 
     async def write(self, data: bytes) -> int:
@@ -175,7 +175,7 @@ class Proposal:
         try:
             public_key = deserialize_public_key(public_key_protobuf_bytes)
         except MissingDeserializerError as error:
-            raise SedesException(error)
+            raise SedesException() from error
         exchanges = protobuf.exchanges
         ciphers = protobuf.ciphers
         hashes = protobuf.hashes
@@ -424,8 +424,8 @@ async def create_secure_session(
         await conn.close()
         raise e
     # `IOException` includes errors raised while read from/write to raw connection
-    except IOException:
-        raise SecioException("connection closed")
+    except IOException as e:
+        raise SecioException("connection closed") from e
 
     is_initiator = remote_peer is not None
     session = _mk_session_from(
@@ -435,8 +435,8 @@ async def create_secure_session(
     try:
         received_nonce = await _finish_handshake(session, remote_nonce)
     # `IOException` includes errors raised while read from/write to raw connection
-    except IOException:
-        raise SecioException("connection closed")
+    except IOException as e:
+        raise SecioException("connection closed") from e
     if received_nonce != local_nonce:
         await conn.close()
         raise InconsistentNonce()

libp2p/tools/interop/daemon.py

@@ -26,7 +26,7 @@ class P2PDProcess(BaseInteractiveProcess):
         is_pubsub_signing: bool = False,
         is_pubsub_signing_strict: bool = False,
     ) -> None:
-        args = [f"-listen={str(control_maddr)}"]
+        args = [f"-listen={control_maddr!s}"]
         # NOTE: To support `-insecure`, we need to hack `go-libp2p-daemon`.
         if not is_secure:
             args.append("-insecure=true")

libp2p/tools/pubsub/dummy_account_node.py

@@ -81,7 +81,7 @@ class DummyAccountNode(Service):
         :param dest_user: user to send crypto to
         :param amount: amount of crypto to send
         """
-        msg_contents = "send," + source_user + "," + dest_user + "," + str(amount)
+        msg_contents = f"send,{source_user},{dest_user},{amount!s}"
         await self.pubsub.publish(CRYPTO_TOPIC, msg_contents.encode())
 
     async def publish_set_crypto(self, user: str, amount: int) -> None:
@@ -92,7 +92,7 @@ class DummyAccountNode(Service):
         :param user: user to set crypto for
         :param amount: amount of crypto
         """
-        msg_contents = "set," + user + "," + str(amount)
+        msg_contents = f"set,{user},{amount!s}"
         await self.pubsub.publish(CRYPTO_TOPIC, msg_contents.encode())
 
     def handle_send_crypto(self, source_user: str, dest_user: str, amount: int) -> None:

tox.ini

@@ -12,7 +12,7 @@ envlist =
 combine_as_imports=False
 force_sort_within_sections=True
 include_trailing_comma=True
-known_third_party=anyio,factory,p2pclient,pytest
+known_third_party=anyio,factory,lru,p2pclient,pytest
 known_first_party=libp2p
 line_length=88
 multi_line_output=3