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https://github.com/StijnBTC/Ringtools.git
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62 lines
2.1 KiB
Python
62 lines
2.1 KiB
Python
import codecs
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import os
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from functools import lru_cache
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from os.path import expanduser
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import grpc
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from grpc_gen import router_pb2 as lnrouter
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from grpc_gen import router_pb2_grpc as lnrouterrpc
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from grpc_gen import lightning_pb2 as ln
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from grpc_gen import lightning_bp2_grpc as lnrpc
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MESSAGE_SIZE_MB = 50 * 1024 * 1024
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class Lnd:
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def __init__(self, lnd_dir, server):
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os.environ["GRPC_SSL_CIPHER_SUITES"] = "HIGH+ECDSA"
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lnd_dir = expanduser(lnd_dir)
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combined_credentials = self.get_credentials(lnd_dir)
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channel_options = [
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("grpc.max_message_length", MESSAGE_SIZE_MB),
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("grpc.max_receive_message_length", MESSAGE_SIZE_MB),
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]
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grpc_channel = grpc.secure_channel(
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server, combined_credentials, channel_options
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)
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self.stub = lnrpc.LightningStub(grpc_channel)
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self.router_stub = lnrouterrpc.RouterStub(grpc_channel)
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@staticmethod
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def get_credentials(lnd_dir):
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with open(f"{lnd_dir}/tls.cert", "rb") as f:
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tls_certificate = f.read()
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ssl_credentials = grpc.ssl_channel_credentials(tls_certificate)
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with open(f"{lnd_dir}/data/chain/bitcoin/mainnet/readonly.macaroon", "rb") as f:
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macaroon = codecs.encode(f.read(), "hex")
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auth_credentials = grpc.metadata_call_credentials(
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lambda _, callback: callback([("macaroon", macaroon)], None)
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)
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combined_credentials = grpc.composite_channel_credentials(
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ssl_credentials, auth_credentials
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)
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return combined_credentials
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# TODO: handle invalid channel ids
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@lru_cache(maxsize=None)
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def get_edge(self, channel_id):
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return self.stub.GetChanInfo(ln.ChanInfoRequest(chan_id=channel_id))
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@lru_cache(maxsize=None)
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def get_node_alias(self, pub_key):
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return self.stub.GetNodeInfo(
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ln.NodeInfoRequest(pub_key=pub_key, include_channels=False)
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).node.alias
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@lru_cache(maxsize=None)
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def get_node(self, pub_key):
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return self.stub.GetNodeInfo(
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ln.NodeInfoRequest(pub_key=pub_key, include_channels=False)
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).node
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