scenarios: include pyln-proto in commander and test ln wire messages

resources/images/commander/Dockerfile

@@ -3,3 +3,4 @@ FROM python:3.12-slim
 
 # Python dependencies
 RUN pip install --no-cache-dir kubernetes
+RUN pip install --no-cache-dir pyln-proto

resources/scenarios/test_scenarios/pyln_connect.py

@@ -0,0 +1,64 @@
+#!/usr/bin/env python3
+
+from io import BytesIO
+
+from commander import Commander
+from pyln.proto.message import Message, MessageNamespace
+from pyln.proto.wire import PrivateKey, PublicKey, connect
+
+
+class PyLNConnect(Commander):
+    def set_test_params(self):
+        self.num_nodes = 0
+
+    def run_test(self):
+        ln = self.lns["tank-0000-ln"]
+        ln.createrune()
+        uri = ln.uri()
+        pk, host = uri.split("@")
+        host, port = host.split(":")
+
+        ls_privkey = PrivateKey(
+            bytes.fromhex("1111111111111111111111111111111111111111111111111111111111111111")
+        )
+        remote_pubkey = PublicKey(bytes.fromhex(pk))
+
+        lc = connect(ls_privkey, remote_pubkey, host, port)
+
+        # Send an init message, with no global features, and 0b10101010 as local
+        # features.
+        # From BOLT1:
+        #   type: 16 (init)
+        #   data:
+        #       [u16:gflen]
+        #       [gflen*byte:globalfeatures]
+        #       [u16:flen]
+        #       [flen*byte:features]
+        #       [init_tlvs:tlvs]
+        lc.send_message(b"\x00\x10\x00\x00\x00\x01\xaa")
+
+        # Import the BOLT#1 init message namesapce
+        ns = MessageNamespace(
+            [
+                "msgtype,init,16",
+                "msgdata,init,gflen,u16,",
+                "msgdata,init,globalfeatures,byte,gflen",
+                "msgdata,init,flen,u16,",
+                "msgdata,init,features,byte,flen",
+            ]
+        )
+        # read reply from peer
+        msg = lc.read_message()
+        self.log.info(f"Got message bytes: {msg.hex()}")
+        # interpret reply from peer
+        stream = BytesIO(msg)
+        msg = Message.read(ns, stream)
+        self.log.info(f"Decoded message type: {msg.messagetype} content: {msg.to_py()}")
+
+
+def main():
+    PyLNConnect().main()
+
+
+if __name__ == "__main__":
+    main()

test/ln_basic_test.py

@@ -34,6 +34,9 @@ def run_test(self):
             # Wait for all nodes to wake up. ln_init will start automatically
             self.setup_network()
 
+            # Test pyln-proto package in scenario
+            self.test_pyln_scenario()
+
             # Test manually configured macroons
             self.test_admin_macaroons()
 
@@ -56,6 +59,12 @@ def setup_network(self):
         self.log.info("Setting up network")
         stream_command(f"warnet deploy {self.network_dir}")
 
+    def test_pyln_scenario(self):
+        self.log.info("Running pyln_connect scenario")
+        scenario_file = self.scen_dir / "test_scenarios" / "pyln_connect.py"
+        self.log.info(f"Running scenario from: {scenario_file}")
+        stream_command(f"warnet run {scenario_file} --source_dir={self.scen_dir} --debug")
+
     def test_admin_macaroons(self):
         self.log.info("Testing lnd nodes with same macaroon root key can query each other")
         # These tanks all use the same default macaroon root key, meaning the macaroons