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refactored and moved all interfaces to abc.py (#504)

Browse Source 
* refactored : host_interface

Co-authored-by: mystical-prog <jdgt.vd.0405@gmail.com>

* refactored : network_interface

Co-authored-by: mystical-prog <jdgt.vd.0405@gmail.com>

* refactored : notifee_interface

Co-authored-by: mystical-prog <jdgt.vd.0405@gmail.com>

* refactored : net_connection_interface

Co-authored-by: mystical-prog <jdgt.vd.0405@gmail.com>

* refactored: raw_connection_interface, secure_conn_interface and stream_muxer abc.py

* refactored: addrbook_interface

* refactored :peerdata_interface

Co-authored-by: mystical-prog <jdgt.vd.0405@gmail.com>

* refactored :peermetadata_interface

Co-authored-by: mystical-prog <jdgt.vd.0405@gmail.com>

* refactored :multiselect_client_interface

Co-authored-by: mystical-prog <jdgt.vd.0405@gmail.com>

* refactored :multiselect_communicator_interface

Co-authored-by: mystical-prog <jdgt.vd.0405@gmail.com>

* refactored :multiselect_muxer_interface

Co-authored-by: mystical-prog <jdgt.vd.0405@gmail.com>

* refactored :interfaces

Co-authored-by: mystical-prog <jdgt.vd.0405@gmail.com>

* refactored :security_transport_interface

Co-authored-by: mystical-prog <jdgt.vd.0405@gmail.com>

* refactored :listener_interface

Co-authored-by: mystical-prog <jdgt.vd.0405@gmail.com>

* moved all interfaces and typing files

Co-authored-by: mystical-prog <jdgt.vd.0405@gmail.com>

* fixed documentation and moved pubsub abc.py

Co-authored-by: Khwahish Patel <khwahish.p1@ahduni.edu.in>

* added exclude-members in custom_types docs

* added : newsfragment for moving all interfaces to libp2p.abc

---------

Co-authored-by: mystical-prog <jdgt.vd.0405@gmail.com>
Co-authored-by: Mystical <125946525+mystical-prog@users.noreply.github.com>
This commit is contained in:
Khwahish Patel
2025-02-22 04:31:45 +05:30
committed by GitHub
parent 4e64347f1e
commit d7eab27564
77 changed files with 1338 additions and 1883 deletions
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152
README.md
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@ -29,94 +29,94 @@ py-libp2p aims for conformity with [the standard libp2p modules](https://libp2p.
> Legend: ✅: Done   🛠️: In Progress   🚫: Missing   ❌: Not planned
| libp2p Node | Status |
| ------------ | :-----------: |
| **`libp2p`** | ✅ |
| libp2p Node | Status |
| ------------ | :----: |
| **`libp2p`** | ✅ |
| Core Protocols | Status |
| -------------- | :-----------: |
| **`Ping`** | ✅ |
| **`Identify`** | ✅ |
| Core Protocols | Status |
| -------------- | :----: |
| **`Ping`** | ✅ |
| **`Identify`** | ✅ |
| Transport Protocols | Status |
| ------------------- | :-----------: |
| **`TCP`** | ✅|
| **`QUIC`** | 🛠️ |
| Transport Protocols | Status |
| ------------------- | :----: |
| **`TCP`** | ✅ |
| **`QUIC`** | 🛠️ |
| **`UDP`** | 🚫 |
| **`WebSockets`** | ❌ |
| **`UTP`** | ❌ |
| **`WebRTC`** | ❌ |
| **`SCTP`** | ❌ |
| **`Tor`** | ❌ |
| **`i2p`** | ❌ |
| **`cjdns`** | ❌ |
| **`Bluetooth LE`** | ❌ |
| **`Audio TP`** | ❌ |
| **`Zerotier`** | ❌ |
| **`WebSockets`** | ❌ |
| **`UTP`** | ❌ |
| **`WebRTC`** | ❌ |
| **`SCTP`** | ❌ |
| **`Tor`** | ❌ |
| **`i2p`** | ❌ |
| **`cjdns`** | ❌ |
| **`Bluetooth LE`** | ❌ |
| **`Audio TP`** | ❌ |
| **`Zerotier`** | ❌ |
| Stream Muxers | Status |
| ---------------- | :-----------: |
| **`multiplex`** | ✅ |
| **`yamux`** | 🚫 |
| **`benchmarks`** | ❌ |
| **`muxado`** | ❌ |
| **`spdystream`** | ❌ |
| **`spdy`** | ❌ |
| **`http2`** | ❌ |
| **`QUIC`** | ❌ |
| Stream Muxers | Status |
| ---------------- | :----: |
| **`multiplex`** | ✅ |
| **`yamux`** | 🚫 |
| **`benchmarks`** | ❌ |
| **`muxado`** | ❌ |
| **`spdystream`** | ❌ |
| **`spdy`** | ❌ |
| **`http2`** | ❌ |
| **`QUIC`** | ❌ |
| Protocol Muxers | Status |
| ----------------- | :-----------: |
| **`multiselect`** | ✅ |
| Protocol Muxers | Status |
| ----------------- | :----: |
| **`multiselect`** | ✅ |
| Switch (Swarm) | Status |
| ------------------ | :-----------: |
| **`Switch`** | ✅ |
| **`Dialer stack`** | ✅ |
| Switch (Swarm) | Status |
| ------------------ | :----: |
| **`Switch`** | ✅ |
| **`Dialer stack`** | ✅ |
| Peer Discovery | Status |
| -------------------- | :--------: |
| **`bootstrap list`** | 🚫 |
| **`Kademlia DHT`** | ❌ |
| **`mDNS`** | ❌ |
| **`PEX`** | ❌ |
| **`DNS`** | ❌ |
| Peer Discovery | Status |
| -------------------- | :----: |
| **`bootstrap list`** | 🚫 |
| **`Kademlia DHT`** | ❌ |
| **`mDNS`** | ❌ |
| **`PEX`** | ❌ |
| **`DNS`** | ❌ |
| Content Routing | Status |
| ------------------ | :-----------: |
| **`Kademlia DHT`** | ❌ |
| **`floodsub`** | ✅ |
| **`gossipsub`** | ✅ |
| **`PHT`** | ❌ |
| Content Routing | Status |
| ------------------ | :----: |
| **`Kademlia DHT`** | ❌ |
| **`floodsub`** | ✅ |
| **`gossipsub`** | ✅ |
| **`PHT`** | ❌ |
| Peer Routing | Status |
| ------------------ | :-----------: |
| **`Kademlia DHT`** | ❌ |
| **`floodsub`** | ✅|
| **`gossipsub`** | ✅ |
| **`PHT`** | ❌ |
| Peer Routing | Status |
| ------------------ | :----: |
| **`Kademlia DHT`** | ❌ |
| **`floodsub`** | ✅ |
| **`gossipsub`** | ✅ |
| **`PHT`** | ❌ |
| NAT Traversal | Status |
| ------------------------ | :--------: |
| **`nat-pmp`** | ❌ |
| **`upnp`** | ❌ |
| **`ext addr discovery`** | ❌ |
| **`STUN-like`** | ❌ |
| **`line-switch relay`** | ❌ |
| **`pkt-switch relay`** | ❌ |
| NAT Traversal | Status |
| ------------------------ | :----: |
| **`nat-pmp`** | ❌ |
| **`upnp`** | ❌ |
| **`ext addr discovery`** | ❌ |
| **`STUN-like`** | ❌ |
| **`line-switch relay`** | ❌ |
| **`pkt-switch relay`** | ❌ |
| Exchange | Status |
| ---------------- | :--------: |
| **`HTTP`** | ❌ |
| **`Bitswap`** | ❌ |
| **`Bittorrent`** | ❌ |
| Exchange | Status |
| ---------------- | :----: |
| **`HTTP`** | ❌ |
| **`Bitswap`** | ❌ |
| **`Bittorrent`** | ❌ |
| Consensus | Status |
| -------------- | :--------: |
| **`Paxos`** | ❌ |
| **`Raft`** | ❌ |
| **`PBTF`** | ❌ |
| **`Nakamoto`** | ❌ |
| Consensus | Status |
| -------------- | :----: |
| **`Paxos`** | ❌ |
| **`Raft`** | ❌ |
| **`PBTF`** | ❌ |
| **`Nakamoto`** | ❌ |
## Explanation of Basic Two Node Communication

8
docs/libp2p.host.rst
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@ -28,14 +28,6 @@ libp2p.host.exceptions module
:undoc-members:
:show-inheritance:
libp2p.host.host\_interface module
----------------------------------
.. automodule:: libp2p.host.host_interface
:members:
:undoc-members:
:show-inheritance:
libp2p.host.ping module
-----------------------

16
docs/libp2p.network.connection.rst
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@ -12,14 +12,6 @@ libp2p.network.connection.exceptions module
:undoc-members:
:show-inheritance:
libp2p.network.connection.net\_connection\_interface module
-----------------------------------------------------------
.. automodule:: libp2p.network.connection.net_connection_interface
:members:
:undoc-members:
:show-inheritance:
libp2p.network.connection.raw\_connection module
------------------------------------------------
@ -28,14 +20,6 @@ libp2p.network.connection.raw\_connection module
:undoc-members:
:show-inheritance:
libp2p.network.connection.raw\_connection\_interface module
-----------------------------------------------------------
.. automodule:: libp2p.network.connection.raw_connection_interface
:members:
:undoc-members:
:show-inheritance:
libp2p.network.connection.swarm\_connection module
--------------------------------------------------

16
docs/libp2p.network.rst
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@ -21,22 +21,6 @@ libp2p.network.exceptions module
:undoc-members:
:show-inheritance:
libp2p.network.network\_interface module
----------------------------------------
.. automodule:: libp2p.network.network_interface
:members:
:undoc-members:
:show-inheritance:
libp2p.network.notifee\_interface module
----------------------------------------
.. automodule:: libp2p.network.notifee_interface
:members:
:undoc-members:
:show-inheritance:
libp2p.network.swarm module
---------------------------

8
docs/libp2p.network.stream.rst
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@ -20,14 +20,6 @@ libp2p.network.stream.net\_stream module
:undoc-members:
:show-inheritance:
libp2p.network.stream.net\_stream\_interface module
---------------------------------------------------
.. automodule:: libp2p.network.stream.net_stream_interface
:members:
:undoc-members:
:show-inheritance:
Module contents
---------------

32
docs/libp2p.peer.rst
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@ -4,14 +4,6 @@ libp2p.peer package
Submodules
----------
libp2p.peer.addrbook\_interface module
--------------------------------------
.. automodule:: libp2p.peer.addrbook_interface
:members:
:undoc-members:
:show-inheritance:
libp2p.peer.id module
---------------------
@ -28,14 +20,6 @@ libp2p.peer.peerdata module
:undoc-members:
:show-inheritance:
libp2p.peer.peerdata\_interface module
--------------------------------------
.. automodule:: libp2p.peer.peerdata_interface
:members:
:undoc-members:
:show-inheritance:
libp2p.peer.peerinfo module
---------------------------
@ -44,14 +28,6 @@ libp2p.peer.peerinfo module
:undoc-members:
:show-inheritance:
libp2p.peer.peermetadata\_interface module
------------------------------------------
.. automodule:: libp2p.peer.peermetadata_interface
:members:
:undoc-members:
:show-inheritance:
libp2p.peer.peerstore module
----------------------------
@ -60,14 +36,6 @@ libp2p.peer.peerstore module
:undoc-members:
:show-inheritance:
libp2p.peer.peerstore\_interface module
---------------------------------------
.. automodule:: libp2p.peer.peerstore_interface
:members:
:undoc-members:
:show-inheritance:
Module contents
---------------

24
docs/libp2p.protocol_muxer.rst
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@ -28,14 +28,6 @@ libp2p.protocol\_muxer.multiselect\_client module
:undoc-members:
:show-inheritance:
libp2p.protocol\_muxer.multiselect\_client\_interface module
------------------------------------------------------------
.. automodule:: libp2p.protocol_muxer.multiselect_client_interface
:members:
:undoc-members:
:show-inheritance:
libp2p.protocol\_muxer.multiselect\_communicator module
-------------------------------------------------------
@ -44,22 +36,6 @@ libp2p.protocol\_muxer.multiselect\_communicator module
:undoc-members:
:show-inheritance:
libp2p.protocol\_muxer.multiselect\_communicator\_interface module
------------------------------------------------------------------
.. automodule:: libp2p.protocol_muxer.multiselect_communicator_interface
:members:
:undoc-members:
:show-inheritance:
libp2p.protocol\_muxer.multiselect\_muxer\_interface module
-----------------------------------------------------------
.. automodule:: libp2p.protocol_muxer.multiselect_muxer_interface
:members:
:undoc-members:
:show-inheritance:
Module contents
---------------

16
docs/libp2p.pubsub.rst
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@ -12,14 +12,6 @@ Subpackages
Submodules
----------
libp2p.pubsub.abc module
------------------------
.. automodule:: libp2p.pubsub.abc
:members:
:undoc-members:
:show-inheritance:
libp2p.pubsub.exceptions module
-------------------------------
@ -76,14 +68,6 @@ libp2p.pubsub.subscription module
:undoc-members:
:show-inheritance:
libp2p.pubsub.typing module
---------------------------
.. automodule:: libp2p.pubsub.typing
:members:
:undoc-members:
:show-inheritance:
libp2p.pubsub.validators module
-------------------------------

21
docs/libp2p.routing.rst
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@ -1,21 +0,0 @@
libp2p.routing package
======================
Submodules
----------
libp2p.routing.interfaces module
--------------------------------
.. automodule:: libp2p.routing.interfaces
:members:
:undoc-members:
:show-inheritance:
Module contents
---------------
.. automodule:: libp2p.routing
:members:
:undoc-members:
:show-inheritance:

10
docs/libp2p.rst
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@ -15,7 +15,6 @@ Subpackages
libp2p.peer
libp2p.protocol_muxer
libp2p.pubsub
libp2p.routing
libp2p.security
libp2p.stream_muxer
libp2p.tools
@ -24,6 +23,14 @@ Subpackages
Submodules
----------
libp2p.abc module
--------------------------
.. automodule:: libp2p.abc
:members:
:undoc-members:
:show-inheritance:
libp2p.exceptions module
------------------------
@ -39,6 +46,7 @@ libp2p.custom_types module
:members:
:undoc-members:
:show-inheritance:
:exclude-members: INetStream, IMuxedConn, ISecureTransport
libp2p.utils module
-------------------

16
docs/libp2p.security.rst
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@ -38,14 +38,6 @@ libp2p.security.exceptions module
:undoc-members:
:show-inheritance:
libp2p.security.secure\_conn\_interface module
----------------------------------------------
.. automodule:: libp2p.security.secure_conn_interface
:members:
:undoc-members:
:show-inheritance:
libp2p.security.secure\_session module
--------------------------------------
@ -54,14 +46,6 @@ libp2p.security.secure\_session module
:undoc-members:
:show-inheritance:
libp2p.security.secure\_transport\_interface module
---------------------------------------------------
.. automodule:: libp2p.security.secure_transport_interface
:members:
:undoc-members:
:show-inheritance:
libp2p.security.security\_multistream module
--------------------------------------------

8
docs/libp2p.stream_muxer.rst
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@ -12,14 +12,6 @@ Subpackages
Submodules
----------
libp2p.stream\_muxer.abc module
-------------------------------
.. automodule:: libp2p.stream_muxer.abc
:members:
:undoc-members:
:show-inheritance:
libp2p.stream\_muxer.exceptions module
--------------------------------------

24
docs/libp2p.transport.rst
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@ -20,30 +20,6 @@ libp2p.transport.exceptions module
:undoc-members:
:show-inheritance:
libp2p.transport.listener\_interface module
-------------------------------------------
.. automodule:: libp2p.transport.listener_interface
:members:
:undoc-members:
:show-inheritance:
libp2p.transport.transport\_interface module
--------------------------------------------
.. automodule:: libp2p.transport.transport_interface
:members:
:undoc-members:
:show-inheritance:
libp2p.transport.typing module
------------------------------
.. automodule:: libp2p.transport.typing
:members:
:undoc-members:
:show-inheritance:
libp2p.transport.upgrader module
--------------------------------

24
libp2p/__init__.py
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@ -1,5 +1,11 @@
from importlib.metadata import version as __version
from libp2p.abc import (
IHost,
INetworkService,
IPeerRouting,
IPeerStore,
)
from libp2p.crypto.keys import (
KeyPair,
)
@ -7,20 +13,16 @@ from libp2p.crypto.rsa import (
create_new_key_pair,
)
from libp2p.custom_types import (
TMuxerOptions,
TProtocol,
TSecurityOptions,
)
from libp2p.host.basic_host import (
BasicHost,
)
from libp2p.host.host_interface import (
IHost,
)
from libp2p.host.routed_host import (
RoutedHost,
)
from libp2p.network.network_interface import (
INetworkService,
)
from libp2p.network.swarm import (
Swarm,
)
@ -30,12 +32,6 @@ from libp2p.peer.id import (
from libp2p.peer.peerstore import (
PeerStore,
)
from libp2p.peer.peerstore_interface import (
IPeerStore,
)
from libp2p.routing.interfaces import (
IPeerRouting,
)
from libp2p.security.insecure.transport import (
PLAINTEXT_PROTOCOL_ID,
InsecureTransport,
@ -48,10 +44,6 @@ from libp2p.stream_muxer.mplex.mplex import (
from libp2p.transport.tcp.tcp import (
TCP,
)
from libp2p.transport.typing import (
TMuxerOptions,
TSecurityOptions,
)
from libp2p.transport.upgrader import (
TransportUpgrader,
)

1050
libp2p/abc.py Normal file
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File diff suppressed because it is too large Load Diff

38
libp2p/custom_types.py
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@ -1,15 +1,49 @@
from collections.abc import (
Awaitable,
Mapping,
)
from typing import (
TYPE_CHECKING,
Callable,
NewType,
Union,
)
if TYPE_CHECKING:
from libp2p.network.stream.net_stream_interface import INetStream # noqa: F401
from libp2p.stream_muxer.abc import IMuxedStream # noqa: F401
from libp2p.abc import (
IMuxedConn,
INetStream,
ISecureTransport,
)
else:
class INetStream:
pass
class IMuxedConn:
pass
class ISecureTransport:
pass
from libp2p.io.abc import (
ReadWriteCloser,
)
from libp2p.peer.id import (
ID,
)
from libp2p.pubsub.pb import (
rpc_pb2,
)
TProtocol = NewType("TProtocol", str)
StreamHandlerFn = Callable[["INetStream"], Awaitable[None]]
THandler = Callable[[ReadWriteCloser], Awaitable[None]]
TSecurityOptions = Mapping[TProtocol, "ISecureTransport"]
TMuxerClass = type["IMuxedConn"]
TMuxerOptions = Mapping[TProtocol, TMuxerClass]
SyncValidatorFn = Callable[[ID, rpc_pb2.Message], bool]
AsyncValidatorFn = Callable[[ID, rpc_pb2.Message], Awaitable[bool]]
ValidatorFn = Union[SyncValidatorFn, AsyncValidatorFn]
UnsubscribeFn = Callable[[], Awaitable[None]]

19
libp2p/host/basic_host.py
View File

@ -12,6 +12,12 @@ from typing import (
import multiaddr
from libp2p.abc import (
IHost,
INetStream,
INetworkService,
IPeerStore,
)
from libp2p.crypto.keys import (
PrivateKey,
PublicKey,
@ -26,21 +32,12 @@ from libp2p.host.defaults import (
from libp2p.host.exceptions import (
StreamFailure,
)
from libp2p.network.network_interface import (
INetworkService,
)
from libp2p.network.stream.net_stream_interface import (
INetStream,
)
from libp2p.peer.id import (
ID,
)
from libp2p.peer.peerinfo import (
PeerInfo,
)
from libp2p.peer.peerstore_interface import (
IPeerStore,
)
from libp2p.protocol_muxer.exceptions import (
MultiselectClientError,
MultiselectError,
@ -58,10 +55,6 @@ from libp2p.tools.async_service import (
background_trio_service,
)
from .host_interface import (
IHost,
)
if TYPE_CHECKING:
from collections import (
OrderedDict,

2
libp2p/host/defaults.py
View File

@ -5,7 +5,7 @@ from typing import (
TYPE_CHECKING,
)
from libp2p.host.host_interface import (
from libp2p.abc import (
IHost,
)
from libp2p.host.ping import (

133
libp2p/host/host_interface.py
View File

@ -1,133 +0,0 @@
from abc import (
ABC,
abstractmethod,
)
from collections.abc import (
Sequence,
)
from typing import (
Any,
AsyncContextManager,
)
import multiaddr
from libp2p.crypto.keys import (
PrivateKey,
PublicKey,
)
from libp2p.custom_types import (
StreamHandlerFn,
TProtocol,
)
from libp2p.network.network_interface import (
INetworkService,
)
from libp2p.network.stream.net_stream_interface import (
INetStream,
)
from libp2p.peer.id import (
ID,
)
from libp2p.peer.peerinfo import (
PeerInfo,
)
class IHost(ABC):
@abstractmethod
def get_id(self) -> ID:
"""
:return: peer_id of host
"""
@abstractmethod
def get_public_key(self) -> PublicKey:
"""
:return: the public key belonging to the peer
"""
@abstractmethod
def get_private_key(self) -> PrivateKey:
"""
:return: the private key belonging to the peer
"""
@abstractmethod
def get_network(self) -> INetworkService:
"""
:return: network instance of host
"""
# FIXME: Replace with correct return type
@abstractmethod
def get_mux(self) -> Any:
"""
:return: mux instance of host
"""
@abstractmethod
def get_addrs(self) -> list[multiaddr.Multiaddr]:
"""
:return: all the multiaddr addresses this host is listening to
"""
@abstractmethod
def get_connected_peers(self) -> list[ID]:
"""
:return: all the ids of peers this host is currently connected to
"""
@abstractmethod
def run(
self, listen_addrs: Sequence[multiaddr.Multiaddr]
) -> AsyncContextManager[None]:
"""
Run the host instance and listen to ``listen_addrs``.
:param listen_addrs: a sequence of multiaddrs that we want to listen to
"""
@abstractmethod
def set_stream_handler(
self, protocol_id: TProtocol, stream_handler: StreamHandlerFn
) -> None:
"""
Set stream handler for host.
:param protocol_id: protocol id used on stream
:param stream_handler: a stream handler function
"""
# protocol_id can be a list of protocol_ids
# stream will decide which protocol_id to run on
@abstractmethod
async def new_stream(
self, peer_id: ID, protocol_ids: Sequence[TProtocol]
) -> INetStream:
"""
:param peer_id: peer_id that host is connecting
:param protocol_ids: available protocol ids to use for stream
:return: stream: new stream created
"""
@abstractmethod
async def connect(self, peer_info: PeerInfo) -> None:
"""
Ensure there is a connection between this host and the peer
with given peer_info.peer_id. connect will absorb the addresses in
peer_info into its internal peerstore. If there is not an active
connection, connect will issue a dial, and block until a connection is
opened, or an error is returned.
:param peer_info: peer_info of the peer we want to connect to
:type peer_info: peer.peerinfo.PeerInfo
"""
@abstractmethod
async def disconnect(self, peer_id: ID) -> None:
pass
@abstractmethod
async def close(self) -> None:
pass

10
libp2p/host/ping.py
View File

@ -4,20 +4,18 @@ import time
import trio
from libp2p.abc import (
IHost,
INetStream,
)
from libp2p.custom_types import (
TProtocol,
)
from libp2p.host.host_interface import (
IHost,
)
from libp2p.network.stream.exceptions import (
StreamClosed,
StreamEOF,
StreamReset,
)
from libp2p.network.stream.net_stream_interface import (
INetStream,
)
from libp2p.peer.id import ID as PeerID
ID = TProtocol("/ipfs/ping/1.0.0")

10
libp2p/host/routed_host.py
View File

@ -1,18 +1,16 @@
from libp2p.abc import (
INetworkService,
IPeerRouting,
)
from libp2p.host.basic_host import (
BasicHost,
)
from libp2p.host.exceptions import (
ConnectionFailure,
)
from libp2p.network.network_interface import (
INetworkService,
)
from libp2p.peer.peerinfo import (
PeerInfo,
)
from libp2p.routing.interfaces import (
IPeerRouting,
)
# RoutedHost is a p2p Host that includes a routing system.

10
libp2p/identity/identify/protocol.py
View File

@ -4,19 +4,17 @@ from multiaddr import (
Multiaddr,
)
from libp2p.abc import (
IHost,
INetStream,
)
from libp2p.custom_types import (
StreamHandlerFn,
TProtocol,
)
from libp2p.host.host_interface import (
IHost,
)
from libp2p.network.stream.exceptions import (
StreamClosed,
)
from libp2p.network.stream.net_stream_interface import (
INetStream,
)
from .pb.identify_pb2 import (
Identify,

28
libp2p/network/connection/net_connection_interface.py
View File

@ -1,28 +0,0 @@
from abc import (
abstractmethod,
)
import trio
from libp2p.io.abc import (
Closer,
)
from libp2p.network.stream.net_stream_interface import (
INetStream,
)
from libp2p.stream_muxer.abc import (
IMuxedConn,
)
class INetConn(Closer):
muxed_conn: IMuxedConn
event_started: trio.Event
@abstractmethod
async def new_stream(self) -> INetStream:
...
@abstractmethod
def get_streams(self) -> tuple[INetStream, ...]:
...

6
libp2p/network/connection/raw_connection.py
View File

@ -1,3 +1,6 @@
from libp2p.abc import (
IRawConnection,
)
from libp2p.io.abc import (
ReadWriteCloser,
)
@ -8,9 +11,6 @@ from libp2p.io.exceptions import (
from .exceptions import (
RawConnError,
)
from .raw_connection_interface import (
IRawConnection,
)
class RawConnection(IRawConnection):

9
libp2p/network/connection/raw_connection_interface.py
View File

@ -1,9 +0,0 @@
from libp2p.io.abc import (
ReadWriteCloser,
)
class IRawConnection(ReadWriteCloser):
"""A Raw Connection provides a Reader and a Writer."""
is_initiator: bool

8
libp2p/network/connection/swarm_connection.py
View File

@ -4,16 +4,14 @@ from typing import (
import trio
from libp2p.network.connection.net_connection_interface import (
from libp2p.abc import (
IMuxedConn,
IMuxedStream,
INetConn,
)
from libp2p.network.stream.net_stream import (
NetStream,
)
from libp2p.stream_muxer.abc import (
IMuxedConn,
IMuxedStream,
)
from libp2p.stream_muxer.exceptions import (
MuxedConnUnavailable,
)

100
libp2p/network/network_interface.py
View File

@ -1,100 +0,0 @@
from abc import (
ABC,
abstractmethod,
)
from collections.abc import (
Sequence,
)
from typing import (
TYPE_CHECKING,
)
from multiaddr import (
Multiaddr,
)
from libp2p.custom_types import (
StreamHandlerFn,
)
from libp2p.network.connection.net_connection_interface import (
INetConn,
)
from libp2p.peer.id import (
ID,
)
from libp2p.peer.peerstore_interface import (
IPeerStore,
)
from libp2p.tools.async_service import (
ServiceAPI,
)
from libp2p.transport.listener_interface import (
IListener,
)
from .stream.net_stream_interface import (
INetStream,
)
if TYPE_CHECKING:
from .notifee_interface import INotifee # noqa: F401
class INetwork(ABC):
peerstore: IPeerStore
connections: dict[ID, INetConn]
listeners: dict[str, IListener]
@abstractmethod
def get_peer_id(self) -> ID:
"""
:return: the peer id
"""
@abstractmethod
async def dial_peer(self, peer_id: ID) -> INetConn:
"""
dial_peer try to create a connection to peer_id.
:param peer_id: peer if we want to dial
:raises SwarmException: raised when an error occurs
:return: muxed connection
"""
@abstractmethod
async def new_stream(self, peer_id: ID) -> INetStream:
"""
:param peer_id: peer_id of destination
:param protocol_ids: available protocol ids to use for stream
:return: net stream instance
"""
@abstractmethod
def set_stream_handler(self, stream_handler: StreamHandlerFn) -> None:
"""Set the stream handler for all incoming streams."""
@abstractmethod
async def listen(self, *multiaddrs: Sequence[Multiaddr]) -> bool:
"""
:param multiaddrs: one or many multiaddrs to start listening on
:return: True if at least one success
"""
@abstractmethod
def register_notifee(self, notifee: "INotifee") -> None:
"""
:param notifee: object implementing Notifee interface
:return: true if notifee registered successfully, false otherwise
"""
@abstractmethod
async def close(self) -> None:
pass
@abstractmethod
async def close_peer(self, peer_id: ID) -> None:
pass
class INetworkService(INetwork, ServiceAPI):
pass

65
libp2p/network/notifee_interface.py
View File

@ -1,65 +0,0 @@
from abc import (
ABC,
abstractmethod,
)
from typing import (
TYPE_CHECKING,
)
from multiaddr import (
Multiaddr,
)
from libp2p.network.connection.net_connection_interface import (
INetConn,
)
from libp2p.network.stream.net_stream_interface import (
INetStream,
)
if TYPE_CHECKING:
from .network_interface import INetwork # noqa: F401
class INotifee(ABC):
@abstractmethod
async def opened_stream(self, network: "INetwork", stream: INetStream) -> None:
"""
:param network: network the stream was opened on
:param stream: stream that was opened
"""
@abstractmethod
async def closed_stream(self, network: "INetwork", stream: INetStream) -> None:
"""
:param network: network the stream was closed on
:param stream: stream that was closed
"""
@abstractmethod
async def connected(self, network: "INetwork", conn: INetConn) -> None:
"""
:param network: network the connection was opened on
:param conn: connection that was opened
"""
@abstractmethod
async def disconnected(self, network: "INetwork", conn: INetConn) -> None:
"""
:param network: network the connection was closed on
:param conn: connection that was closed
"""
@abstractmethod
async def listen(self, network: "INetwork", multiaddr: Multiaddr) -> None:
"""
:param network: network the listener is listening on
:param multiaddr: multiaddress listener is listening on
"""
@abstractmethod
async def listen_close(self, network: "INetwork", multiaddr: Multiaddr) -> None:
"""
:param network: network the connection was opened on
:param multiaddr: multiaddress listener is no longer listening on
"""

10
libp2p/network/stream/net_stream.py
View File

@ -2,12 +2,13 @@ from typing import (
Optional,
)
from libp2p.abc import (
IMuxedStream,
INetStream,
)
from libp2p.custom_types import (
TProtocol,
)
from libp2p.stream_muxer.abc import (
IMuxedStream,
)
from libp2p.stream_muxer.exceptions import (
MuxedStreamClosed,
MuxedStreamEOF,
@ -19,9 +20,6 @@ from .exceptions import (
StreamEOF,
StreamReset,
)
from .net_stream_interface import (
INetStream,
)
# TODO: Handle exceptions from `muxed_stream`

33
libp2p/network/stream/net_stream_interface.py
View File

@ -1,33 +0,0 @@
from abc import (
abstractmethod,
)
from libp2p.custom_types import (
TProtocol,
)
from libp2p.io.abc import (
ReadWriteCloser,
)
from libp2p.stream_muxer.abc import (
IMuxedConn,
)
class INetStream(ReadWriteCloser):
muxed_conn: IMuxedConn
@abstractmethod
def get_protocol(self) -> TProtocol:
"""
:return: protocol id that stream runs on
"""
@abstractmethod
def set_protocol(self, protocol_id: TProtocol) -> None:
"""
:param protocol_id: protocol id that stream runs on
"""
@abstractmethod
async def reset(self) -> None:
"""Close both ends of the stream."""

34
libp2p/network/swarm.py
View File

@ -8,27 +8,28 @@ from multiaddr import (
)
import trio
from libp2p.abc import (
IListener,
IMuxedConn,
INetConn,
INetStream,
INetworkService,
INotifee,
IPeerStore,
ITransport,
)
from libp2p.custom_types import (
StreamHandlerFn,
)
from libp2p.io.abc import (
ReadWriteCloser,
)
from libp2p.network.connection.net_connection_interface import (
INetConn,
)
from libp2p.peer.id import (
ID,
)
from libp2p.peer.peerstore import (
PeerStoreError,
)
from libp2p.peer.peerstore_interface import (
IPeerStore,
)
from libp2p.stream_muxer.abc import (
IMuxedConn,
)
from libp2p.tools.async_service import (
Service,
)
@ -37,12 +38,6 @@ from libp2p.transport.exceptions import (
OpenConnectionError,
SecurityUpgradeFailure,
)
from libp2p.transport.listener_interface import (
IListener,
)
from libp2p.transport.transport_interface import (
ITransport,
)
from libp2p.transport.upgrader import (
TransportUpgrader,
)
@ -59,15 +54,6 @@ from .connection.swarm_connection import (
from .exceptions import (
SwarmException,
)
from .network_interface import (
INetworkService,
)
from .notifee_interface import (
INotifee,
)
from .stream.net_stream_interface import (
INetStream,
)
logger = logging.getLogger("libp2p.network.swarm")

61
libp2p/peer/addrbook_interface.py
View File

@ -1,61 +0,0 @@
from abc import (
ABC,
abstractmethod,
)
from collections.abc import (
Sequence,
)
from multiaddr import (
Multiaddr,
)
from .id import (
ID,
)
class IAddrBook(ABC):
@abstractmethod
def add_addr(self, peer_id: ID, addr: Multiaddr, ttl: int) -> None:
"""
Calls add_addrs(peer_id, [addr], ttl)
:param peer_id: the peer to add address for
:param addr: multiaddress of the peer
:param ttl: time-to-live for the address (after this time, address is no longer valid)
""" # noqa: E501
@abstractmethod
def add_addrs(self, peer_id: ID, addrs: Sequence[Multiaddr], ttl: int) -> None:
"""
Adds addresses for a given peer all with the same time-to-live. If one
of the addresses already exists for the peer and has a longer TTL, no
operation should take place. If one of the addresses exists with a
shorter TTL, extend the TTL to equal param ttl.
:param peer_id: the peer to add address for
:param addr: multiaddresses of the peer
:param ttl: time-to-live for the address (after this time, address is no longer valid
""" # noqa: E501
@abstractmethod
def addrs(self, peer_id: ID) -> list[Multiaddr]:
"""
:param peer_id: peer to get addresses of
:return: all known (and valid) addresses for the given peer
"""
@abstractmethod
def clear_addrs(self, peer_id: ID) -> None:
"""
Removes all previously stored addresses.
:param peer_id: peer to remove addresses of
"""
@abstractmethod
def peers_with_addrs(self) -> list[ID]:
"""
:return: all of the peer IDs stored with addresses
"""

7
libp2p/peer/peerdata.py
View File

@ -9,15 +9,14 @@ from multiaddr import (
Multiaddr,
)
from libp2p.abc import (
IPeerData,
)
from libp2p.crypto.keys import (
PrivateKey,
PublicKey,
)
from .peerdata_interface import (
IPeerData,
)
class PeerData(IPeerData):
pubkey: PublicKey

100
libp2p/peer/peerdata_interface.py
View File

@ -1,100 +0,0 @@
from abc import (
ABC,
abstractmethod,
)
from collections.abc import (
Sequence,
)
from typing import (
Any,
)
from multiaddr import (
Multiaddr,
)
from libp2p.crypto.keys import (
PrivateKey,
PublicKey,
)
from .peermetadata_interface import (
IPeerMetadata,
)
class IPeerData(ABC):
@abstractmethod
def get_protocols(self) -> list[str]:
"""
:return: all protocols associated with given peer
"""
@abstractmethod
def add_protocols(self, protocols: Sequence[str]) -> None:
"""
:param protocols: protocols to add
"""
@abstractmethod
def set_protocols(self, protocols: Sequence[str]) -> None:
"""
:param protocols: protocols to set
"""
@abstractmethod
def add_addrs(self, addrs: Sequence[Multiaddr]) -> None:
"""
:param addrs: multiaddresses to add
"""
@abstractmethod
def get_addrs(self) -> list[Multiaddr]:
"""
:return: all multiaddresses
"""
@abstractmethod
def clear_addrs(self) -> None:
"""Clear all addresses."""
@abstractmethod
def put_metadata(self, key: str, val: Any) -> None:
"""
:param key: key in KV pair
:param val: val to associate with key
"""
@abstractmethod
def get_metadata(self, key: str) -> IPeerMetadata:
"""
:param key: key in KV pair
:return: val for key
:raise PeerDataError: key not found
"""
@abstractmethod
def add_pubkey(self, pubkey: PublicKey) -> None:
"""
:param pubkey:
"""
@abstractmethod
def get_pubkey(self) -> PublicKey:
"""
:return: public key of the peer
:raise PeerDataError: if public key not found
"""
@abstractmethod
def add_privkey(self, privkey: PrivateKey) -> None:
"""
:param privkey:
"""
@abstractmethod
def get_privkey(self) -> PrivateKey:
"""
:return: private key of the peer
:raise PeerDataError: if private key not found
"""

31
libp2p/peer/peermetadata_interface.py
View File

@ -1,31 +0,0 @@
from abc import (
ABC,
abstractmethod,
)
from typing import (
Any,
)
from .id import (
ID,
)
class IPeerMetadata(ABC):
@abstractmethod
def get(self, peer_id: ID, key: str) -> Any:
"""
:param peer_id: peer ID to lookup key for
:param key: key to look up
:return: value at key for given peer
:raise Exception: peer ID not found
"""
@abstractmethod
def put(self, peer_id: ID, key: str, val: Any) -> None:
"""
:param peer_id: peer ID to lookup key for
:param key: key to associate with peer
:param val: value to associated with key
:raise Exception: unsuccessful put
"""

6
libp2p/peer/peerstore.py
View File

@ -12,6 +12,9 @@ from multiaddr import (
Multiaddr,
)
from libp2p.abc import (
IPeerStore,
)
from libp2p.crypto.keys import (
KeyPair,
PrivateKey,
@ -28,9 +31,6 @@ from .peerdata import (
from .peerinfo import (
PeerInfo,
)
from .peerstore_interface import (
IPeerStore,
)
class PeerStore(IPeerStore):

161
libp2p/peer/peerstore_interface.py
View File

@ -1,161 +0,0 @@
from abc import (
abstractmethod,
)
from collections.abc import (
Sequence,
)
from typing import (
Any,
)
from multiaddr import (
Multiaddr,
)
from libp2p.crypto.keys import (
KeyPair,
PrivateKey,
PublicKey,
)
from .addrbook_interface import (
IAddrBook,
)
from .id import (
ID,
)
from .peerinfo import (
PeerInfo,
)
from .peermetadata_interface import (
IPeerMetadata,
)
class IPeerStore(IAddrBook, IPeerMetadata):
@abstractmethod
def peer_info(self, peer_id: ID) -> PeerInfo:
"""
:param peer_id: peer ID to get info for
:return: peer info object
"""
@abstractmethod
def get_protocols(self, peer_id: ID) -> list[str]:
"""
:param peer_id: peer ID to get protocols for
:return: protocols (as list of strings)
:raise PeerStoreError: if peer ID not found
"""
@abstractmethod
def add_protocols(self, peer_id: ID, protocols: Sequence[str]) -> None:
"""
:param peer_id: peer ID to add protocols for
:param protocols: protocols to add
"""
@abstractmethod
def set_protocols(self, peer_id: ID, protocols: Sequence[str]) -> None:
"""
:param peer_id: peer ID to set protocols for
:param protocols: protocols to set
"""
@abstractmethod
def peer_ids(self) -> list[ID]:
"""
:return: all of the peer IDs stored in peer store
"""
@abstractmethod
def get(self, peer_id: ID, key: str) -> Any:
"""
:param peer_id: peer ID to get peer data for
:param key: the key to search value for
:return: value corresponding to the key
:raise PeerStoreError: if peer ID or value not found
"""
@abstractmethod
def put(self, peer_id: ID, key: str, val: Any) -> None:
"""
:param peer_id: peer ID to put peer data for
:param key:
:param value:
"""
@abstractmethod
def add_addr(self, peer_id: ID, addr: Multiaddr, ttl: int) -> None:
"""
:param peer_id: peer ID to add address for
:param addr:
:param ttl: time-to-live for the this record
"""
@abstractmethod
def add_addrs(self, peer_id: ID, addrs: Sequence[Multiaddr], ttl: int) -> None:
"""
:param peer_id: peer ID to add address for
:param addrs:
:param ttl: time-to-live for the this record
"""
@abstractmethod
def addrs(self, peer_id: ID) -> list[Multiaddr]:
"""
:param peer_id: peer ID to get addrs for
:return: list of addrs
"""
@abstractmethod
def clear_addrs(self, peer_id: ID) -> None:
"""
:param peer_id: peer ID to clear addrs for
"""
@abstractmethod
def peers_with_addrs(self) -> list[ID]:
"""
:return: all of the peer IDs which has addrs stored in peer store
"""
@abstractmethod
def add_pubkey(self, peer_id: ID, pubkey: PublicKey) -> None:
"""
:param peer_id: peer ID to add public key for
:param pubkey:
:raise PeerStoreError: if peer ID already has pubkey set
"""
@abstractmethod
def pubkey(self, peer_id: ID) -> PublicKey:
"""
:param peer_id: peer ID to get public key for
:return: public key of the peer
:raise PeerStoreError: if peer ID not found
"""
@abstractmethod
def add_privkey(self, peer_id: ID, privkey: PrivateKey) -> None:
"""
:param peer_id: peer ID to add private key for
:param privkey:
:raise PeerStoreError: if peer ID already has privkey set
"""
@abstractmethod
def privkey(self, peer_id: ID) -> PrivateKey:
"""
:param peer_id: peer ID to get private key for
:return: private key of the peer
:raise PeerStoreError: if peer ID not found
"""
@abstractmethod
def add_key_pair(self, peer_id: ID, key_pair: KeyPair) -> None:
"""
:param peer_id: peer ID to add private key for
:param key_pair:
:raise PeerStoreError: if peer ID already has pubkey or privkey set
"""

10
libp2p/protocol_muxer/multiselect.py
View File

@ -1,3 +1,7 @@
from libp2p.abc import (
IMultiselectCommunicator,
IMultiselectMuxer,
)
from libp2p.custom_types import (
StreamHandlerFn,
TProtocol,
@ -7,12 +11,6 @@ from .exceptions import (
MultiselectCommunicatorError,
MultiselectError,
)
from .multiselect_communicator_interface import (
IMultiselectCommunicator,
)
from .multiselect_muxer_interface import (
IMultiselectMuxer,
)
MULTISELECT_PROTOCOL_ID = "/multistream/1.0.0"
PROTOCOL_NOT_FOUND_MSG = "na"

10
libp2p/protocol_muxer/multiselect_client.py
View File

@ -2,6 +2,10 @@ from collections.abc import (
Sequence,
)
from libp2p.abc import (
IMultiselectClient,
IMultiselectCommunicator,
)
from libp2p.custom_types import (
TProtocol,
)
@ -10,12 +14,6 @@ from .exceptions import (
MultiselectClientError,
MultiselectCommunicatorError,
)
from .multiselect_client_interface import (
IMultiselectClient,
)
from .multiselect_communicator_interface import (
IMultiselectCommunicator,
)
MULTISELECT_PROTOCOL_ID = "/multistream/1.0.0"
PROTOCOL_NOT_FOUND_MSG = "na"

58
libp2p/protocol_muxer/multiselect_client_interface.py
View File

@ -1,58 +0,0 @@
from abc import (
ABC,
abstractmethod,
)
from collections.abc import (
Sequence,
)
from libp2p.custom_types import (
TProtocol,
)
from libp2p.protocol_muxer.multiselect_communicator_interface import (
IMultiselectCommunicator,
)
class IMultiselectClient(ABC):
"""
Client for communicating with receiver's multiselect module in order to
select a protocol id to communicate over.
"""
@abstractmethod
async def handshake(self, communicator: IMultiselectCommunicator) -> None:
"""
Ensure that the client and multiselect are both using the same
multiselect protocol.
:param stream: stream to communicate with multiselect over
:raise Exception: multiselect protocol ID mismatch
"""
@abstractmethod
async def select_one_of(
self, protocols: Sequence[TProtocol], communicator: IMultiselectCommunicator
) -> TProtocol:
"""
For each protocol, send message to multiselect selecting protocol and
fail if multiselect does not return same protocol. Returns first
protocol that multiselect agrees on (i.e. that multiselect selects)
:param protocol: protocol to select
:param stream: stream to communicate with multiselect over
:return: selected protocol
"""
@abstractmethod
async def try_select(
self, communicator: IMultiselectCommunicator, protocol: TProtocol
) -> TProtocol:
"""
Try to select the given protocol or raise exception if fails.
:param communicator: communicator to use to communicate with counterparty
:param protocol: protocol to select
:raise Exception: error in protocol selection
:return: selected protocol
"""

6
libp2p/protocol_muxer/multiselect_communicator.py
View File

@ -1,3 +1,6 @@
from libp2p.abc import (
IMultiselectCommunicator,
)
from libp2p.exceptions import (
ParseError,
)
@ -15,9 +18,6 @@ from libp2p.utils import (
from .exceptions import (
MultiselectCommunicatorError,
)
from .multiselect_communicator_interface import (
IMultiselectCommunicator,
)
class MultiselectCommunicator(IMultiselectCommunicator):

24
libp2p/protocol_muxer/multiselect_communicator_interface.py
View File

@ -1,24 +0,0 @@
from abc import (
ABC,
abstractmethod,
)
class IMultiselectCommunicator(ABC):
"""
Communicator helper class that ensures both the client and multistream
module will follow the same multistream protocol, which is necessary for
them to work.
"""
@abstractmethod
async def write(self, msg_str: str) -> None:
"""
Write message to stream.
:param msg_str: message to write
"""
@abstractmethod
async def read(self) -> str:
"""Reads message from stream until EOF."""

47
libp2p/protocol_muxer/multiselect_muxer_interface.py
View File

@ -1,47 +0,0 @@
from abc import (
ABC,
abstractmethod,
)
from libp2p.custom_types import (
StreamHandlerFn,
TProtocol,
)
from .multiselect_communicator_interface import (
IMultiselectCommunicator,
)
class IMultiselectMuxer(ABC):
"""
Multiselect module that is responsible for responding to a multiselect
client and deciding on a specific protocol and handler pair to use for
communication.
"""
handlers: dict[TProtocol, StreamHandlerFn]
@abstractmethod
def add_handler(self, protocol: TProtocol, handler: StreamHandlerFn) -> None:
"""
Store the handler with the given protocol.
:param protocol: protocol name
:param handler: handler function
"""
def get_protocols(self) -> tuple[TProtocol, ...]:
return tuple(self.handlers.keys())
@abstractmethod
async def negotiate(
self, communicator: IMultiselectCommunicator
) -> tuple[TProtocol, StreamHandlerFn]:
"""
Negotiate performs protocol selection.
:param stream: stream to negotiate on
:return: selected protocol name, handler function
:raise Exception: negotiation failed exception
"""

158
libp2p/pubsub/abc.py
View File

@ -1,158 +0,0 @@
from abc import (
ABC,
abstractmethod,
)
from collections.abc import (
AsyncIterable,
KeysView,
)
from typing import (
TYPE_CHECKING,
AsyncContextManager,
)
from libp2p.custom_types import (
TProtocol,
)
from libp2p.peer.id import (
ID,
)
from libp2p.tools.async_service import (
ServiceAPI,
)
from .pb import (
rpc_pb2,
)
from .typing import (
ValidatorFn,
)
if TYPE_CHECKING:
from .pubsub import Pubsub # noqa: F401
class ISubscriptionAPI(
AsyncContextManager["ISubscriptionAPI"], AsyncIterable[rpc_pb2.Message]
):
@abstractmethod
async def unsubscribe(self) -> None:
...
@abstractmethod
async def get(self) -> rpc_pb2.Message:
...
class IPubsubRouter(ABC):
@abstractmethod
def get_protocols(self) -> list[TProtocol]:
"""
:return: the list of protocols supported by the router
"""
@abstractmethod
def attach(self, pubsub: "Pubsub") -> None:
"""
Attach is invoked by the PubSub constructor to attach the router to a
freshly initialized PubSub instance.
:param pubsub: pubsub instance to attach to
"""
@abstractmethod
def add_peer(self, peer_id: ID, protocol_id: TProtocol) -> None:
"""
Notifies the router that a new peer has been connected.
:param peer_id: id of peer to add
:param protocol_id: router protocol the peer speaks, e.g., floodsub, gossipsub
"""
@abstractmethod
def remove_peer(self, peer_id: ID) -> None:
"""
Notifies the router that a peer has been disconnected.
:param peer_id: id of peer to remove
"""
@abstractmethod
async def handle_rpc(self, rpc: rpc_pb2.RPC, sender_peer_id: ID) -> None:
"""
Invoked to process control messages in the RPC envelope.
It is invoked after subscriptions and payload messages have been processed
:param rpc: RPC message
:param sender_peer_id: id of the peer who sent the message
"""
@abstractmethod
async def publish(self, msg_forwarder: ID, pubsub_msg: rpc_pb2.Message) -> None:
"""
Invoked to forward a new message that has been validated.
:param msg_forwarder: peer_id of message sender
:param pubsub_msg: pubsub message to forward
"""
@abstractmethod
async def join(self, topic: str) -> None:
"""
Join notifies the router that we want to receive and forward messages
in a topic. It is invoked after the subscription announcement.
:param topic: topic to join
"""
@abstractmethod
async def leave(self, topic: str) -> None:
"""
Leave notifies the router that we are no longer interested in a topic.
It is invoked after the unsubscription announcement.
:param topic: topic to leave
"""
class IPubsub(ServiceAPI):
@property
@abstractmethod
def my_id(self) -> ID:
...
@property
@abstractmethod
def protocols(self) -> tuple[TProtocol, ...]:
...
@property
@abstractmethod
def topic_ids(self) -> KeysView[str]:
...
@abstractmethod
def set_topic_validator(
self, topic: str, validator: ValidatorFn, is_async_validator: bool
) -> None:
...
@abstractmethod
def remove_topic_validator(self, topic: str) -> None:
...
@abstractmethod
async def wait_until_ready(self) -> None:
...
@abstractmethod
async def subscribe(self, topic_id: str) -> ISubscriptionAPI:
...
@abstractmethod
async def unsubscribe(self, topic_id: str) -> None:
...
@abstractmethod
async def publish(self, topic_id: str, data: bytes) -> None:
...

6
libp2p/pubsub/floodsub.py
View File

@ -6,6 +6,9 @@ import logging
import trio
from libp2p.abc import (
IPubsubRouter,
)
from libp2p.custom_types import (
TProtocol,
)
@ -19,9 +22,6 @@ from libp2p.utils import (
encode_varint_prefixed,
)
from .abc import (
IPubsubRouter,
)
from .pb import (
rpc_pb2,
)

6
libp2p/pubsub/gossipsub.py
View File

@ -17,6 +17,9 @@ from typing import (
import trio
from libp2p.abc import (
IPubsubRouter,
)
from libp2p.custom_types import (
TProtocol,
)
@ -36,9 +39,6 @@ from libp2p.utils import (
encode_varint_prefixed,
)
from .abc import (
IPubsubRouter,
)
from .exceptions import (
NoPubsubAttached,
)

24
libp2p/pubsub/pubsub.py
View File

@ -23,19 +23,25 @@ from lru import (
)
import trio
from libp2p.abc import (
IHost,
INetStream,
IPubsub,
ISubscriptionAPI,
)
from libp2p.crypto.keys import (
PrivateKey,
)
from libp2p.custom_types import (
AsyncValidatorFn,
SyncValidatorFn,
TProtocol,
ValidatorFn,
)
from libp2p.exceptions import (
ParseError,
ValidationError,
)
from libp2p.host.host_interface import (
IHost,
)
from libp2p.io.exceptions import (
IncompleteReadError,
)
@ -47,9 +53,6 @@ from libp2p.network.stream.exceptions import (
StreamEOF,
StreamReset,
)
from libp2p.network.stream.net_stream_interface import (
INetStream,
)
from libp2p.peer.id import (
ID,
)
@ -61,10 +64,6 @@ from libp2p.utils import (
read_varint_prefixed_bytes,
)
from .abc import (
IPubsub,
ISubscriptionAPI,
)
from .pb import (
rpc_pb2,
)
@ -74,11 +73,6 @@ from .pubsub_notifee import (
from .subscription import (
TrioSubscriptionAPI,
)
from .typing import (
AsyncValidatorFn,
SyncValidatorFn,
ValidatorFn,
)
from .validators import (
PUBSUB_SIGNING_PREFIX,
signature_validator,

12
libp2p/pubsub/pubsub_notifee.py
View File

@ -7,17 +7,11 @@ from multiaddr import (
)
import trio
from libp2p.network.connection.net_connection_interface import (
from libp2p.abc import (
INetConn,
)
from libp2p.network.network_interface import (
INetwork,
)
from libp2p.network.notifee_interface import (
INotifee,
)
from libp2p.network.stream.net_stream_interface import (
INetStream,
INetwork,
INotifee,
)
if TYPE_CHECKING:

9
libp2p/pubsub/subscription.py
View File

@ -11,15 +11,16 @@ from typing import (
import trio
from .abc import (
from libp2p.abc import (
ISubscriptionAPI,
)
from libp2p.custom_types import (
UnsubscribeFn,
)
from .pb import (
rpc_pb2,
)
from .typing import (
UnsubscribeFn,
)
class BaseSubscriptionAPI(ISubscriptionAPI):

21
libp2p/pubsub/typing.py
View File

@ -1,21 +0,0 @@
from collections.abc import (
Awaitable,
)
from typing import (
Callable,
Union,
)
from libp2p.peer.id import (
ID,
)
from .pb import (
rpc_pb2,
)
SyncValidatorFn = Callable[[ID, rpc_pb2.Message], bool]
AsyncValidatorFn = Callable[[ID, rpc_pb2.Message], Awaitable[bool]]
ValidatorFn = Union[SyncValidatorFn, AsyncValidatorFn]
UnsubscribeFn = Callable[[], Awaitable[None]]

0
libp2p/routing/__init__.py
View File

42
libp2p/routing/interfaces.py
View File

@ -1,42 +0,0 @@
from abc import (
ABC,
abstractmethod,
)
from collections.abc import (
Iterable,
)
from libp2p.peer.id import (
ID,
)
from libp2p.peer.peerinfo import (
PeerInfo,
)
class IContentRouting(ABC):
@abstractmethod
def provide(self, cid: bytes, announce: bool = True) -> None:
"""
Provide adds the given cid to the content routing system.
If announce is True, it also announces it, otherwise it is just
kept in the local accounting of which objects are being
provided.
"""
@abstractmethod
def find_provider_iter(self, cid: bytes, count: int) -> Iterable[PeerInfo]:
"""
Search for peers who are able to provide a given key returns an
iterator of peer.PeerInfo.
"""
class IPeerRouting(ABC):
@abstractmethod
async def find_peer(self, peer_id: ID) -> PeerInfo:
"""
Find specific Peer FindPeer searches for a peer with given peer_id,
returns a peer.PeerInfo with relevant addresses.
"""

6
libp2p/security/base_session.py
View File

@ -2,6 +2,9 @@ from typing import (
Optional,
)
from libp2p.abc import (
ISecureConn,
)
from libp2p.crypto.keys import (
PrivateKey,
PublicKey,
@ -9,9 +12,6 @@ from libp2p.crypto.keys import (
from libp2p.peer.id import (
ID,
)
from libp2p.security.secure_conn_interface import (
ISecureConn,
)
class BaseSession(ISecureConn):

6
libp2p/security/base_transport.py
View File

@ -3,15 +3,15 @@ from typing import (
Callable,
)
from libp2p.abc import (
ISecureTransport,
)
from libp2p.crypto.keys import (
KeyPair,
)
from libp2p.peer.id import (
ID,
)
from libp2p.security.secure_transport_interface import (
ISecureTransport,
)
def default_secure_bytes_provider(n: int) -> bytes:

10
libp2p/security/insecure/transport.py
View File

@ -1,3 +1,7 @@
from libp2p.abc import (
IRawConnection,
ISecureConn,
)
from libp2p.crypto.exceptions import (
MissingDeserializerError,
)
@ -23,9 +27,6 @@ from libp2p.io.msgio import (
from libp2p.network.connection.exceptions import (
RawConnError,
)
from libp2p.network.connection.raw_connection_interface import (
IRawConnection,
)
from libp2p.peer.id import (
ID,
)
@ -38,9 +39,6 @@ from libp2p.security.base_transport import (
from libp2p.security.exceptions import (
HandshakeFailure,
)
from libp2p.security.secure_conn_interface import (
ISecureConn,
)
from .pb import (
plaintext_pb2,

6
libp2p/security/noise/io.py
View File

@ -4,6 +4,9 @@ from typing import (
from noise.connection import NoiseConnection as NoiseState
from libp2p.abc import (
IRawConnection,
)
from libp2p.io.abc import (
EncryptedMsgReadWriter,
MsgReadWriteCloser,
@ -12,9 +15,6 @@ from libp2p.io.abc import (
from libp2p.io.msgio import (
FixedSizeLenMsgReadWriter,
)
from libp2p.network.connection.raw_connection_interface import (
IRawConnection,
)
SIZE_NOISE_MESSAGE_LEN = 2
MAX_NOISE_MESSAGE_LEN = 2 ** (8 * SIZE_NOISE_MESSAGE_LEN) - 1

10
libp2p/security/noise/patterns.py
View File

@ -10,6 +10,10 @@ from noise.backends.default.keypairs import KeyPair as NoiseKeyPair
from noise.connection import Keypair as NoiseKeypairEnum
from noise.connection import NoiseConnection as NoiseState
from libp2p.abc import (
IRawConnection,
ISecureConn,
)
from libp2p.crypto.ed25519 import (
Ed25519PublicKey,
)
@ -17,15 +21,9 @@ from libp2p.crypto.keys import (
PrivateKey,
PublicKey,
)
from libp2p.network.connection.raw_connection_interface import (
IRawConnection,
)
from libp2p.peer.id import (
ID,
)
from libp2p.security.secure_conn_interface import (
ISecureConn,
)
from libp2p.security.secure_session import (
SecureSession,
)

14
libp2p/security/noise/transport.py
View File

@ -1,3 +1,8 @@
from libp2p.abc import (
IRawConnection,
ISecureConn,
ISecureTransport,
)
from libp2p.crypto.keys import (
KeyPair,
PrivateKey,
@ -5,18 +10,9 @@ from libp2p.crypto.keys import (
from libp2p.custom_types import (
TProtocol,
)
from libp2p.network.connection.raw_connection_interface import (
IRawConnection,
)
from libp2p.peer.id import (
ID,
)
from libp2p.security.secure_conn_interface import (
ISecureConn,
)
from libp2p.security.secure_transport_interface import (
ISecureTransport,
)
from .patterns import (
IPattern,

10
libp2p/security/secio/transport.py
View File

@ -8,6 +8,10 @@ from typing import (
import multihash
from libp2p.abc import (
IRawConnection,
ISecureConn,
)
from libp2p.crypto.authenticated_encryption import (
EncryptionParameters as AuthenticatedEncryptionParameters,
)
@ -47,16 +51,10 @@ from libp2p.io.exceptions import (
from libp2p.io.msgio import (
FixedSizeLenMsgReadWriter,
)
from libp2p.network.connection.raw_connection_interface import (
IRawConnection,
)
from libp2p.peer.id import ID as PeerID
from libp2p.security.base_transport import (
BaseSecureTransport,
)
from libp2p.security.secure_conn_interface import (
ISecureConn,
)
from libp2p.security.secure_session import (
SecureSession,
)

44
libp2p/security/secure_conn_interface.py
View File

@ -1,44 +0,0 @@
from abc import (
ABC,
abstractmethod,
)
from libp2p.crypto.keys import (
PrivateKey,
PublicKey,
)
from libp2p.network.connection.raw_connection_interface import (
IRawConnection,
)
from libp2p.peer.id import (
ID,
)
"""
Represents a secured connection object, which includes a connection and details about
the security involved in the secured connection
Relevant go repo: https://github.com/libp2p/go-conn-security/blob/master/interface.go
"""
class AbstractSecureConn(ABC):
@abstractmethod
def get_local_peer(self) -> ID:
pass
@abstractmethod
def get_local_private_key(self) -> PrivateKey:
pass
@abstractmethod
def get_remote_peer(self) -> ID:
pass
@abstractmethod
def get_remote_public_key(self) -> PublicKey:
pass
class ISecureConn(AbstractSecureConn, IRawConnection):
pass

42
libp2p/security/secure_transport_interface.py
View File

@ -1,42 +0,0 @@
from abc import (
ABC,
abstractmethod,
)
from libp2p.network.connection.raw_connection_interface import (
IRawConnection,
)
from libp2p.peer.id import (
ID,
)
from libp2p.security.secure_conn_interface import (
ISecureConn,
)
"""
Transport that is used to secure a connection. This transport is
chosen by a security transport multistream module.
Relevant go repo: https://github.com/libp2p/go-conn-security/blob/master/interface.go
"""
class ISecureTransport(ABC):
@abstractmethod
async def secure_inbound(self, conn: IRawConnection) -> ISecureConn:
"""
Secure the connection, either locally or by communicating with opposing
node via conn, for an inbound connection (i.e. we are not the
initiator)
:return: secure connection object (that implements secure_conn_interface)
"""
@abstractmethod
async def secure_outbound(self, conn: IRawConnection, peer_id: ID) -> ISecureConn:
"""
Secure the connection, either locally or by communicating with opposing
node via conn, for an inbound connection (i.e. we are the initiator)
:return: secure connection object (that implements secure_conn_interface)
"""

18
libp2p/security/security_multistream.py
View File

@ -5,11 +5,14 @@ from collections import (
OrderedDict,
)
from libp2p.abc import (
IRawConnection,
ISecureConn,
ISecureTransport,
)
from libp2p.custom_types import (
TProtocol,
)
from libp2p.network.connection.raw_connection_interface import (
IRawConnection,
TSecurityOptions,
)
from libp2p.peer.id import (
ID,
@ -23,15 +26,6 @@ from libp2p.protocol_muxer.multiselect_client import (
from libp2p.protocol_muxer.multiselect_communicator import (
MultiselectCommunicator,
)
from libp2p.security.secure_conn_interface import (
ISecureConn,
)
from libp2p.security.secure_transport_interface import (
ISecureTransport,
)
from libp2p.transport.typing import (
TSecurityOptions,
)
"""
Represents a secured connection object, which includes a connection and details about

85
libp2p/stream_muxer/abc.py
View File

@ -1,85 +0,0 @@
from abc import (
ABC,
abstractmethod,
)
import trio
from libp2p.io.abc import (
ReadWriteCloser,
)
from libp2p.peer.id import (
ID,
)
from libp2p.security.secure_conn_interface import (
ISecureConn,
)
class IMuxedConn(ABC):
"""
reference: https://github.com/libp2p/go-stream-muxer/blob/master/muxer.go
"""
peer_id: ID
event_started: trio.Event
@abstractmethod
def __init__(self, conn: ISecureConn, peer_id: ID) -> None:
"""
Create a new muxed connection.
:param conn: an instance of secured connection
for new muxed streams
:param peer_id: peer_id of peer the connection is to
"""
@property
@abstractmethod
def is_initiator(self) -> bool:
"""If this connection is the initiator."""
@abstractmethod
async def start(self) -> None:
"""Start the multiplexer."""
@abstractmethod
async def close(self) -> None:
"""Close connection."""
@property
@abstractmethod
def is_closed(self) -> bool:
"""
Check connection is fully closed.
:return: true if successful
"""
@abstractmethod
async def open_stream(self) -> "IMuxedStream":
"""
Create a new muxed_stream.
:return: a new ``IMuxedStream`` stream
"""
@abstractmethod
async def accept_stream(self) -> "IMuxedStream":
"""Accept a muxed stream opened by the other end."""
class IMuxedStream(ReadWriteCloser):
muxed_conn: IMuxedConn
@abstractmethod
async def reset(self) -> None:
"""Close both ends of the stream tells this remote side to hang up."""
@abstractmethod
def set_deadline(self, ttl: int) -> bool:
"""
Set deadline for muxed stream.
:return: a new stream
"""

12
libp2p/stream_muxer/mplex/mplex.py
View File

@ -5,6 +5,11 @@ from typing import (
import trio
from libp2p.abc import (
IMuxedConn,
IMuxedStream,
ISecureConn,
)
from libp2p.custom_types import (
TProtocol,
)
@ -20,13 +25,6 @@ from libp2p.network.connection.exceptions import (
from libp2p.peer.id import (
ID,
)
from libp2p.security.secure_conn_interface import (
ISecureConn,
)
from libp2p.stream_muxer.abc import (
IMuxedConn,
IMuxedStream,
)
from libp2p.utils import (
decode_uvarint_from_stream,
encode_uvarint,

2
libp2p/stream_muxer/mplex/mplex_stream.py
View File

@ -4,7 +4,7 @@ from typing import (
import trio
from libp2p.stream_muxer.abc import (
from libp2p.abc import (
IMuxedStream,
)
from libp2p.stream_muxer.exceptions import (

23
libp2p/stream_muxer/muxer_multistream.py
View File

@ -2,11 +2,15 @@ from collections import (
OrderedDict,
)
from libp2p.custom_types import (
TProtocol,
)
from libp2p.network.connection.raw_connection_interface import (
from libp2p.abc import (
IMuxedConn,
IRawConnection,
ISecureConn,
)
from libp2p.custom_types import (
TMuxerClass,
TMuxerOptions,
TProtocol,
)
from libp2p.peer.id import (
ID,
@ -20,17 +24,6 @@ from libp2p.protocol_muxer.multiselect_client import (
from libp2p.protocol_muxer.multiselect_communicator import (
MultiselectCommunicator,
)
from libp2p.security.secure_conn_interface import (
ISecureConn,
)
from libp2p.transport.typing import (
TMuxerClass,
TMuxerOptions,
)
from .abc import (
IMuxedConn,
)
# FIXME: add negotiate timeout to `MuxerMultistream`
DEFAULT_NEGOTIATE_TIMEOUT = 60

36
libp2p/tools/factories.py
View File

@ -22,6 +22,15 @@ from libp2p import (
generate_new_rsa_identity,
generate_peer_id_from,
)
from libp2p.abc import (
IHost,
INetStream,
IPeerRouting,
IPubsubRouter,
IRawConnection,
ISecureConn,
ISecureTransport,
)
from libp2p.crypto.ed25519 import create_new_key_pair as create_ed25519_key_pair
from libp2p.crypto.keys import (
KeyPair,
@ -29,14 +38,13 @@ from libp2p.crypto.keys import (
)
from libp2p.crypto.secp256k1 import create_new_key_pair as create_secp256k1_key_pair
from libp2p.custom_types import (
TMuxerOptions,
TProtocol,
TSecurityOptions,
)
from libp2p.host.basic_host import (
BasicHost,
)
from libp2p.host.host_interface import (
IHost,
)
from libp2p.host.routed_host import (
RoutedHost,
)
@ -46,15 +54,9 @@ from libp2p.io.abc import (
from libp2p.network.connection.raw_connection import (
RawConnection,
)
from libp2p.network.connection.raw_connection_interface import (
IRawConnection,
)
from libp2p.network.connection.swarm_connection import (
SwarmConn,
)
from libp2p.network.stream.net_stream_interface import (
INetStream,
)
from libp2p.network.swarm import (
Swarm,
)
@ -67,9 +69,6 @@ from libp2p.peer.peerinfo import (
from libp2p.peer.peerstore import (
PeerStore,
)
from libp2p.pubsub.abc import (
IPubsubRouter,
)
from libp2p.pubsub.floodsub import (
FloodSub,
)
@ -81,9 +80,6 @@ from libp2p.pubsub.pubsub import (
Pubsub,
get_peer_and_seqno_msg_id,
)
from libp2p.routing.interfaces import (
IPeerRouting,
)
from libp2p.security.insecure.transport import (
PLAINTEXT_PROTOCOL_ID,
InsecureTransport,
@ -95,12 +91,6 @@ from libp2p.security.noise.messages import (
from libp2p.security.noise.transport import PROTOCOL_ID as NOISE_PROTOCOL_ID
from libp2p.security.noise.transport import Transport as NoiseTransport
import libp2p.security.secio.transport as secio
from libp2p.security.secure_conn_interface import (
ISecureConn,
)
from libp2p.security.secure_transport_interface import (
ISecureTransport,
)
from libp2p.stream_muxer.mplex.mplex import (
MPLEX_PROTOCOL_ID,
Mplex,
@ -117,10 +107,6 @@ from libp2p.tools.constants import (
from libp2p.transport.tcp.tcp import (
TCP,
)
from libp2p.transport.typing import (
TMuxerOptions,
TSecurityOptions,
)
from libp2p.transport.upgrader import (
TransportUpgrader,
)

2
libp2p/tools/pubsub/dummy_account_node.py
View File

@ -6,7 +6,7 @@ from contextlib import (
asynccontextmanager,
)
from libp2p.host.host_interface import (
from libp2p.abc import (
IHost,
)
from libp2p.pubsub.pubsub import (

2
libp2p/tools/pubsub/utils.py
View File

@ -2,7 +2,7 @@ from collections.abc import (
Sequence,
)
from libp2p.host.host_interface import (
from libp2p.abc import (
IHost,
)
from libp2p.peer.id import (

6
libp2p/tools/utils.py
View File

@ -5,15 +5,13 @@ from typing import (
Callable,
)
from libp2p.host.host_interface import (
from libp2p.abc import (
IHost,
INetStream,
)
from libp2p.network.stream.exceptions import (
StreamError,
)
from libp2p.network.stream.net_stream_interface import (
INetStream,
)
from libp2p.network.swarm import (
Swarm,
)

32
libp2p/transport/listener_interface.py
View File

@ -1,32 +0,0 @@
from abc import (
ABC,
abstractmethod,
)
from multiaddr import (
Multiaddr,
)
import trio
class IListener(ABC):
@abstractmethod
async def listen(self, maddr: Multiaddr, nursery: trio.Nursery) -> bool:
"""
Put listener in listening mode and wait for incoming connections.
:param maddr: multiaddr of peer
:return: return True if successful
"""
@abstractmethod
def get_addrs(self) -> tuple[Multiaddr, ...]:
"""
Retrieve list of addresses the listener is listening on.
:return: return list of addrs
"""
@abstractmethod
async def close(self) -> None:
...

20
libp2p/transport/tcp/tcp.py
View File

@ -15,27 +15,23 @@ from trio_typing import (
TaskStatus,
)
from libp2p.abc import (
IListener,
IRawConnection,
ITransport,
)
from libp2p.custom_types import (
THandler,
)
from libp2p.io.trio import (
TrioTCPStream,
)
from libp2p.network.connection.raw_connection import (
RawConnection,
)
from libp2p.network.connection.raw_connection_interface import (
IRawConnection,
)
from libp2p.transport.exceptions import (
OpenConnectionError,
)
from libp2p.transport.listener_interface import (
IListener,
)
from libp2p.transport.transport_interface import (
ITransport,
)
from libp2p.transport.typing import (
THandler,
)
logger = logging.getLogger("libp2p.transport.tcp")

41
libp2p/transport/transport_interface.py
View File

@ -1,41 +0,0 @@
from abc import (
ABC,
abstractmethod,
)
from multiaddr import (
Multiaddr,
)
from libp2p.network.connection.raw_connection_interface import (
IRawConnection,
)
from .listener_interface import (
IListener,
)
from .typing import (
THandler,
)
class ITransport(ABC):
@abstractmethod
async def dial(self, maddr: Multiaddr) -> IRawConnection:
"""
Dial a transport to peer listening on multiaddr.
:param multiaddr: multiaddr of peer
:param self_id: peer_id of the dialer (to send to receiver)
:return: list of multiaddrs
"""
@abstractmethod
def create_listener(self, handler_function: THandler) -> IListener:
"""
Create listener on transport.
:param handler_function: a function called when a new conntion is received
that takes a connection as argument which implements interface-connection
:return: a listener object that implements listener_interface.py
"""

25
libp2p/transport/typing.py
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@ -1,25 +0,0 @@
from collections.abc import (
Awaitable,
Mapping,
)
from typing import (
Callable,
)
from libp2p.custom_types import (
TProtocol,
)
from libp2p.io.abc import (
ReadWriteCloser,
)
from libp2p.security.secure_transport_interface import (
ISecureTransport,
)
from libp2p.stream_muxer.abc import (
IMuxedConn,
)
THandler = Callable[[ReadWriteCloser], Awaitable[None]]
TSecurityOptions = Mapping[TProtocol, ISecureTransport]
TMuxerClass = type[IMuxedConn]
TMuxerOptions = Mapping[TProtocol, TMuxerClass]

27
libp2p/transport/upgrader.py
View File

@ -1,5 +1,13 @@
from libp2p.network.connection.raw_connection_interface import (
from libp2p.abc import (
IListener,
IMuxedConn,
IRawConnection,
ISecureConn,
ITransport,
)
from libp2p.custom_types import (
TMuxerOptions,
TSecurityOptions,
)
from libp2p.peer.id import (
ID,
@ -11,15 +19,9 @@ from libp2p.protocol_muxer.exceptions import (
from libp2p.security.exceptions import (
HandshakeFailure,
)
from libp2p.security.secure_conn_interface import (
ISecureConn,
)
from libp2p.security.security_multistream import (
SecurityMultistream,
)
from libp2p.stream_muxer.abc import (
IMuxedConn,
)
from libp2p.stream_muxer.muxer_multistream import (
MuxerMultistream,
)
@ -27,17 +29,6 @@ from libp2p.transport.exceptions import (
MuxerUpgradeFailure,
SecurityUpgradeFailure,
)
from libp2p.transport.typing import (
TMuxerOptions,
TSecurityOptions,
)
from .listener_interface import (
IListener,
)
from .transport_interface import (
ITransport,
)
class TransportUpgrader:

1
newsfragments/228.internal.rst Normal file
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@ -0,0 +1 @@
moved all interfaces to ``libp2p.abc`` along with all libp2p custom types to ``libp2p.custom_types``.

2
tests/core/network/test_notify.py
View File

@ -13,7 +13,7 @@ import enum
import pytest
import trio
from libp2p.network.notifee_interface import (
from libp2p.abc import (
INotifee,
)
from libp2p.tools.async_service import (