add --xud.debug

Author: reliveyy

images/utils/launcher/config/config.py

@@ -365,6 +365,12 @@ def parse_command_line_arguments(self):
             action="store_true",
             help="Preserve xud xud.conf file during updates"
         )
+        group.add_argument(
+            "--xud.debug",
+            nargs='?',
+            metavar="<port>",
+            help="Run xud with NodeJS --inspect option on specific port (default: 9229)"
+        )
 
         group = parser.add_argument_group("arby")
         group.add_argument(
@@ -778,6 +784,9 @@ def update_xud(self, parsed):
         """
         node = self.nodes["xud"]
         self.update_ports(node, parsed)
+        node["debug"] = self._get_value("debug", node, parsed, converter=lambda v: int(v))
+        if node["debug"]:
+            node["ports"].append(PortPublish("%s" % node["debug"]))
 
     def update_disabled(self, node, parsed, opt):
         if "disabled" in parsed:

images/utils/launcher/config/mainnet.conf

@@ -131,6 +131,7 @@
 # 8886 - gRPC port
 # 8080 - webproxy port
 #expose-ports = ["8885", "8886", "8080"]
+#debug = 9229
 
 [arby]
 #live-cex="false"

images/utils/launcher/config/simnet.conf

@@ -44,6 +44,7 @@
 # 28886 - gRPC port
 # 28080 - webproxy port
 #expose-ports = ["28885", "28886", "28080:8080"]
+#debug = 9229
 
 [arby]
 #live-cex="false"

images/utils/launcher/config/testnet.conf

@@ -131,6 +131,7 @@
 # 18886 - gRPC port
 # 18080 - webproxy port
 #expose-ports = ["18885", "18886", "18080:8080"]
+#debug = 9229
 
 [arby]
 #live-cex="false"

images/utils/launcher/node/xud.py

@@ -96,6 +96,11 @@ def _get_environment(self) -> List[str]:
                 "LNDLTC_MACAROONPATH={}".format(lndbtc["macaroonpath"]),
             ])
 
+        if "debug" in self.node_config:
+            debug_port = self.node_config["debug"]
+            if debug_port:
+                env.append(f"DEBUG_PORT={debug_port}")
+
         return env
 
     def status(self):

images/xud/entrypoint.sh

@@ -160,5 +160,11 @@ update_lnds "${ARR[@]}"
 
 /xud-backup.sh &
 
-# use exec to properly respond to SIGINT
-exec xud $@
+
+if [[ -n ${DEBUG_PORT:-} ]]; then
+    export NODE_ENV=development
+    exec node --inspect-brk="0.0.0.0:$DEBUG_PORT" bin/xud
+else
+    # use exec to properly respond to SIGINT
+    exec xud "$@"
+fi