def get_info_query(wallet: LNDWallet) -> LnInfoType:
cfg = build_lnd_wallet_config(wallet.pk)
channel_data = build_grpc_channel_manual(
rpc_server="127.0.0.1",
rpc_port=cfg.rpc_listen_port_ipv4,
cert_path=cfg.tls_cert_path,
macaroon_path=cfg.admin_macaroon_path)
if channel_data.error is not None:
return channel_data.error
stub = lnrpc.LightningStub(channel_data.channel)
request = ln.GetInfoRequest()
try:
response = stub.GetInfo(request,
metadata=[('macaroon', channel_data.macaroon)])
except grpc.RpcError as exc:
# pylint: disable=E1101
return ServerError.generic_rpc_error(exc.code(), exc.details())
json_data = json.loads(
MessageToJson(
response,
preserving_proto_field_name=True,
including_default_value_fields=True,
))
ln_info = LnInfoType(json_data)
ip = IPAddress.objects.get(pk=1) # type: IPAddress
ln_info.current_ip = ip.ip_address
ln_info.current_port = cfg.listen_port_ipv4
return GetInfoSuccess(ln_info)
def get_peer_has_channel(channel_data, peer_list):
stub = lnrpc.LightningStub(channel_data.channel)
request = ln.ListChannelsRequest()
try:
response = stub.ListChannels(
request, metadata=[('macaroon', channel_data.macaroon)])
except grpc.RpcError as exc:
print(exc)
raise exc
json_data = json.loads(
MessageToJson(
response,
preserving_proto_field_name=True,
including_default_value_fields=True,
))
temp_map = {}
for peer in peer_list:
temp_map[peer.pub_key] = peer
for channel in json_data["channels"]:
try:
temp_map[channel["remote_pubkey"]].has_channel = True
except KeyError:
pass
def list_channels_query(wallet: LNDWallet):
cfg = build_lnd_wallet_config(wallet.pk)
channel_data = build_grpc_channel_manual(
rpc_server="127.0.0.1",
rpc_port=cfg.rpc_listen_port_ipv4,
cert_path=cfg.tls_cert_path,
macaroon_path=cfg.admin_macaroon_path)
if channel_data.error is not None:
return channel_data.error
stub = lnrpc.LightningStub(channel_data.channel)
request = ln.ListChannelsRequest()
try:
response = stub.ListChannels(request,
metadata=[('macaroon',
channel_data.macaroon)])
except grpc.RpcError as exc:
print(exc)
raise exc
json_data = json.loads(
MessageToJson(
response,
preserving_proto_field_name=True,
including_default_value_fields=True,
))
channel_list = []
for c in json_data["channels"]:
channel_list.append(LnChannel(c))
return ListChannelsSuccess(channel_list)
def resolve_ln_list_payments(self, info, index_offset, num_max_payments,
reverse):
"""https://api.lightning.community/?python#listpayments
LND does not have paging in this call yet. Every gRPC
call will always return the complete payments dataset.
The paging functionality is implemented on top of the
full dataset we get from the LND daemon.
"""
if not info.context.user.is_authenticated:
return Unauthenticated()
res = LNDWallet.objects.filter(owner=info.context.user)
if not res:
return WalletInstanceNotFound()
cfg = build_lnd_wallet_config(res.first().pk)
channel_data = build_grpc_channel_manual(
rpc_server="127.0.0.1",
rpc_port=cfg.rpc_listen_port_ipv4,
cert_path=cfg.tls_cert_path,
macaroon_path=cfg.admin_macaroon_path)
if channel_data.error is not None:
return channel_data.error
stub = lnrpc.LightningStub(channel_data.channel)
request = ln.ListPaymentsRequest()
try:
response = stub.ListPayments(request,
metadata=[('macaroon',
channel_data.macaroon)])
except grpc.RpcError as exc:
# pylint: disable=E1101
print(exc)
return ServerError.generic_rpc_error(exc.code(), exc.details())
json_data = json.loads(
MessageToJson(
response,
preserving_proto_field_name=True,
including_default_value_fields=True,
))
if reverse:
# reverse the list
rev = json_data["payments"][::-1]
payments = rev[index_offset:index_offset + num_max_payments]
else:
payments = json_data["payments"][index_offset:index_offset +
num_max_payments]
return ListPaymentsSuccess(index_offset,
index_offset + num_max_payments, payments)
def mutate(self, info, pubkey: str, host: str, perm: bool):
"""https://api.lightning.community/?python#connectpeer"""
if not info.context.user.is_authenticated:
return Unauthenticated()
res: QuerySet = LNDWallet.objects.filter(owner=info.context.user)
if not res:
return WalletInstanceNotFound()
wallet: LNDWallet = res.first()
cfg: LNDWalletConfig = build_lnd_wallet_config(wallet.pk)
channel_data = build_grpc_channel_manual(
rpc_server="127.0.0.1",
rpc_port=cfg.rpc_listen_port_ipv4,
cert_path=cfg.tls_cert_path,
macaroon_path=cfg.admin_macaroon_path,
)
if channel_data.error is not None:
return channel_data.error
stub = lnrpc.LightningStub(channel_data.channel)
request = ln.ConnectPeerRequest(addr={
"pubkey": pubkey,
"host": host
},
perm=perm)
try:
response = stub.ConnectPeer(request,
metadata=[('macaroon',
channel_data.macaroon)])
except grpc.RpcError as exc:
# pylint: disable=E1101
print(exc)
if "dial tcp {}: connect: connection refused".format(
host) in exc.details():
return ConnectPeerError(
error_message="Peer refused to connect",
pubkey=pubkey,
host=host)
if "already connected to peer: {}".format(host) in exc.details():
return ConnectPeerError(
error_message="Already connected to peer",
pubkey=pubkey,
host=host)
return ServerError.generic_rpc_error(exc.code(), exc.details())
return ConnectPeerSuccess(pubkey=pubkey)
def mutate(self,
info,
payment_raw: LnRawPaymentInput = None,
payment_request: str = "",
final_cltv_delta: int = 0,
fee_limit: LnFeeLimit = None):
if not info.context.user.is_authenticated:
return SendPaymentMutation(payment_result=Unauthenticated())
res = LNDWallet.objects.filter(owner=info.context.user)
if not res:
return SendPaymentMutation(payment_result=WalletInstanceNotFound())
cfg = build_lnd_wallet_config(res.first().pk)
channel_data = build_grpc_channel_manual(
rpc_server="127.0.0.1",
rpc_port=cfg.rpc_listen_port_ipv4,
cert_path=cfg.tls_cert_path,
macaroon_path=cfg.admin_macaroon_path,
)
if channel_data.error is not None:
return SendPaymentMutation(payment_result=channel_data.error)
stub = lnrpc.LightningStub(channel_data.channel)
request = ln.SendRequest(payment_request=payment_request)
try:
response = stub.SendPaymentSync(request,
metadata=[('macaroon',
channel_data.macaroon)])
except RpcError as exc:
# pylint: disable=E1101
print(exc)
if exc.details().startswith("invoice expired"):
return SendPaymentMutation(
payment_result=SendPaymentError(exc.details()))
return SendPaymentMutation(
payment_result=ServerError.generic_rpc_error(
exc.code(), exc.details()))
json_data = json.loads(MessageToJson(response))
if response.payment_error:
err = SendPaymentError(payment_error=response.payment_error)
return SendPaymentMutation(payment_result=err)
res = SendPaymentSuccess(payment_preimage=response.payment_preimage,
payment_route=LnRoute(
json_data["payment_route"]))
return SendPaymentMutation(payment_result=res)
def mutate(
self,
info,
):
"""https://api.lightning.community/?python#stopdaemon"""
if not info.context.user.is_authenticated:
return Unauthenticated()
res: QuerySet = LNDWallet.objects.filter(owner=info.context.user)
if not res:
return WalletInstanceNotFound()
wallet: LNDWallet = res.first()
cfg: LNDWalletConfig = build_lnd_wallet_config(wallet.pk)
channel_data = build_grpc_channel_manual(
rpc_server="127.0.0.1",
rpc_port=cfg.rpc_listen_port_ipv4,
cert_path=cfg.tls_cert_path,
macaroon_path=cfg.admin_macaroon_path,
)
if channel_data.error is not None:
return channel_data.error
# stop daemon
stub = lnrpc.LightningStub(channel_data.channel)
request = ln.StopRequest()
try:
response = stub.StopDaemon(request,
metadata=[('macaroon',
channel_data.macaroon)])
except grpc.RpcError as exc:
# pylint: disable=E1101
print(exc)
return ServerError.generic_rpc_error(exc.code(), exc.details())
start = time.time()
while True:
if not lnd_instance_is_running(cfg):
return StopDaemonSuccess()
if time.time() - start >= 10:
return StopDaemonError(
error_message=
"Unable to shutdown the process within 10 seconds")
time.sleep(1)
async def resolve_invoice_subscription(self,
info,
add_index=None,
settle_index=None):
try:
if not info.context["user"].is_authenticated:
yield Unauthenticated()
except AttributeError as exc:
print(exc)
yield ServerError(
"A server internal error (AttributeError) has occurred. :-(")
res = LNDWallet.objects.filter(owner=info.context["user"])
if not res:
yield WalletInstanceNotFound()
cfg = build_lnd_wallet_config(res.first().pk)
channel_data = build_grpc_channel_manual(
rpc_server="127.0.0.1",
rpc_port=cfg.rpc_listen_port_ipv4,
cert_path=cfg.tls_cert_path,
macaroon_path=cfg.admin_macaroon_path,
is_async=True)
if channel_data.error is not None:
yield ServerError(error_message=channel_data.error)
try:
stub = lnrpc.LightningStub(channel_data.channel)
request = ln.InvoiceSubscription(
add_index=add_index,
settle_index=settle_index,
)
except Exception as exc:
print(exc)
yield ServerError(error_message=exc)
try:
async for response in stub.SubscribeInvoices(
request, metadata=[('macaroon', channel_data.macaroon)]):
if not info.context["user"].is_authenticated:
yield Unauthenticated()
else:
json_data = json.loads(MessageToJson(response))
invoice = InvoiceSubSuccess(LnInvoice(json_data))
yield invoice
except Exception as exc:
print(exc)
yield ServerError(error_message=exc)
def resolve_get_ln_wallet_status(self, info, **kwargs):
"""retrieve the current state of the wallet"""
if not info.context.user.is_authenticated:
return Unauthenticated()
res = LNDWallet.objects.filter(owner=info.context.user)
# LND instance is not yet created.
# User should call createWallet
if not res:
return WalletInstanceNotFound()
# Wallet database object was created but
# it is not yet initialized
if not res.first().initialized:
return GetLnWalletStatusNotInitialized()
cfg = build_lnd_wallet_config(res.first().pk)
channel_data = build_grpc_channel_manual(
rpc_server="127.0.0.1",
rpc_port=cfg.rpc_listen_port_ipv4,
cert_path=cfg.tls_cert_path,
macaroon_path=cfg.admin_macaroon_path)
if channel_data.error is not None:
return channel_data.error
stub = lnrpc.LightningStub(channel_data.channel)
request = ln.GetInfoRequest()
try:
stub.GetInfo(request,
metadata=[('macaroon', channel_data.macaroon)])
except grpc.RpcError as exc:
# pylint: disable=E1101
# This is a wanted exception.
# When GetInfo returns UNIMPLEMENTED the wallet is likely locked
if exc.code() == grpc.StatusCode.UNIMPLEMENTED:
return GetLnWalletStatusLocked()
# Unexpected exception
LOGGER.exception(exc)
return ServerError.generic_rpc_error(exc.code(), exc.details())
return GetLnWalletStatusOperational()
def resolve_ln_list_invoices(self, info, pending_only, index_offset,
num_max_invoices, reverse):
"""https://api.lightning.community/?python#listinvoices"""
if not info.context.user.is_authenticated:
return Unauthenticated()
res = LNDWallet.objects.filter(owner=info.context.user)
if not res:
return WalletInstanceNotFound()
cfg = build_lnd_wallet_config(res.first().pk)
channel_data = build_grpc_channel_manual(
rpc_server="127.0.0.1",
rpc_port=cfg.rpc_listen_port_ipv4,
cert_path=cfg.tls_cert_path,
macaroon_path=cfg.admin_macaroon_path)
if channel_data.error is not None:
return channel_data.error
stub = lnrpc.LightningStub(channel_data.channel)
request = ln.ListInvoiceRequest(
pending_only=pending_only,
index_offset=index_offset,
num_max_invoices=num_max_invoices,
reversed=reverse,
)
try:
response = stub.ListInvoices(request,
metadata=[('macaroon',
channel_data.macaroon)])
except grpc.RpcError as exc:
# pylint: disable=E1101
print(exc)
return ServerError.generic_rpc_error(exc.code(), exc.details())
json_data = json.loads(
MessageToJson(
response,
preserving_proto_field_name=True,
including_default_value_fields=True,
))
return ListInvoicesSuccess(json_data)
def list_peers_query(info, wallet: LNDWallet):
cfg = build_lnd_wallet_config(wallet.pk)
channel_data = build_grpc_channel_manual(
rpc_server="127.0.0.1",
rpc_port=cfg.rpc_listen_port_ipv4,
cert_path=cfg.tls_cert_path,
macaroon_path=cfg.admin_macaroon_path)
if channel_data.error is not None:
return channel_data.error
stub = lnrpc.LightningStub(channel_data.channel)
request = ln.ListPeersRequest()
try:
response = stub.ListPeers(
request, metadata=[('macaroon', channel_data.macaroon)])
except grpc.RpcError as exc:
print(exc)
raise exc
json_data = json.loads(
MessageToJson(
response,
preserving_proto_field_name=True,
including_default_value_fields=True,
))
peer_list = []
for c in json_data["peers"]:
peer_list.append(LnPeer(c))
for selection in info.field_asts[0].selection_set.selections:
if hasattr(selection, "type_condition"):
if selection.type_condition.name.value == "ListPeersSuccess":
for field in selection.selection_set.selections[
0].selection_set.selections:
if field.name.value == "hasChannel":
get_peer_has_channel(channel_data, peer_list)
break
return ListPeersSuccess(peer_list)
def mutate(self, info, pubkey: str):
"""https://api.lightning.community/?python#disconnectpeer"""
if not info.context.user.is_authenticated:
return Unauthenticated()
res: QuerySet = LNDWallet.objects.filter(owner=info.context.user)
if not res:
return WalletInstanceNotFound()
wallet: LNDWallet = res.first()
cfg: LNDWalletConfig = build_lnd_wallet_config(wallet.pk)
channel_data = build_grpc_channel_manual(
rpc_server="127.0.0.1",
rpc_port=cfg.rpc_listen_port_ipv4,
cert_path=cfg.tls_cert_path,
macaroon_path=cfg.admin_macaroon_path,
)
if channel_data.error is not None:
return channel_data.error
stub = lnrpc.LightningStub(channel_data.channel)
request = ln.DisconnectPeerRequest(pub_key=pubkey)
try:
stub.DisconnectPeer(request,
metadata=[('macaroon', channel_data.macaroon)])
except grpc.RpcError as exc:
# pylint: disable=E1101
print(exc)
if "unable to disconnect peer: peer {} is not connected".format(
pubkey) in exc.details():
return DisconnectPeerError(error_message="Peer not connected",
pubkey=pubkey)
return ServerError.generic_rpc_error(exc.code(), exc.details())
return DisconnectPeerSuccess(pubkey=pubkey)
def mutate(self, info, value, memo: str = ""):
if not info.context.user.is_authenticated:
return AddInvoiceMutation(result=Unauthenticated())
res = LNDWallet.objects.filter(owner=info.context.user)
if not res:
return AddInvoiceMutation(result=WalletInstanceNotFound())
cfg = build_lnd_wallet_config(res.first().pk)
channel_data = build_grpc_channel_manual(
rpc_server="127.0.0.1",
rpc_port=cfg.rpc_listen_port_ipv4,
cert_path=cfg.tls_cert_path,
macaroon_path=cfg.admin_macaroon_path,
)
if channel_data.error is not None:
return AddInvoiceMutation(result=channel_data.error)
stub = lnrpc.LightningStub(channel_data.channel)
request = ln.Invoice(
value=value,
memo=memo,
add_index=1,
)
try:
response = stub.AddInvoice(request,
metadata=[('macaroon',
channel_data.macaroon)])
except RpcError as exc:
# pylint: disable=E1101
print(exc)
return AddInvoiceMutation(result=ServerError.generic_rpc_error(
exc.code(), exc.details()))
json_data = json.loads(MessageToJson(response))
return AddInvoiceMutation(
result=AddInvoiceSuccess(LnAddInvoiceResponse(json_data)))
def get_info_query(wallet: LNDWallet, address_type: str) -> str:
cfg = build_lnd_wallet_config(wallet.pk)
channel_data = build_grpc_channel_manual(
rpc_server="127.0.0.1",
rpc_port=cfg.rpc_listen_port_ipv4,
cert_path=cfg.tls_cert_path,
macaroon_path=cfg.admin_macaroon_path)
if channel_data.error is not None:
return channel_data.error
stub = lnrpc.LightningStub(channel_data.channel)
if address_type == "p2wkh":
request = ln.NewAddressRequest(type="WITNESS_PUBKEY_HASH")
elif address_type == "np2wkh":
request = ln.NewAddressRequest(type="NESTED_PUBKEY_HASH")
else:
return NewAddressError(error_message="Unknown address type")
try:
response = stub.NewAddress(request,
metadata=[('macaroon',
channel_data.macaroon)])
except grpc.RpcError as exc:
print(exc)
raise exc
json_data = json.loads(
MessageToJson(
response,
preserving_proto_field_name=True,
including_default_value_fields=True,
))
return NewAddressSuccess(json_data["address"])
async def resolve_open_channel_subscription(self,
info,
node_pubkey,
local_funding_amount,
push_sat,
private,
min_htlc_msat,
min_confs,
spend_unconfirmed,
sat_per_byte=None,
remote_csv_delay=None,
target_conf=None):
try:
if not info.context["user"].is_authenticated:
yield Unauthenticated()
except AttributeError as exc:
print(exc)
yield ServerError(
"A server internal error (AttributeError) has occurred. :-(")
res = LNDWallet.objects.filter(owner=info.context["user"])
if not res:
yield WalletInstanceNotFound()
cfg = build_lnd_wallet_config(res.first().pk)
channel_data = build_grpc_channel_manual(
rpc_server="127.0.0.1",
rpc_port=cfg.rpc_listen_port_ipv4,
cert_path=cfg.tls_cert_path,
macaroon_path=cfg.admin_macaroon_path,
is_async=True)
if channel_data.error is not None:
yield channel_data.error
try:
stub = lnrpc.LightningStub(channel_data.channel)
request = ln.OpenChannelRequest(
node_pubkey=codecs.decode(node_pubkey, 'hex'),
local_funding_amount=local_funding_amount,
push_sat=push_sat,
target_conf=target_conf,
sat_per_byte=sat_per_byte,
private=private,
min_htlc_msat=min_htlc_msat,
remote_csv_delay=remote_csv_delay,
min_confs=min_confs,
# spend_unconfirmed=spend_unconfirmed
)
except Exception as exc:
print(exc)
yield ServerError(error_message=str(exc))
return
try:
async for response in stub.OpenChannel(request,
metadata=[
('macaroon',
channel_data.macaroon)
]):
if not info.context["user"].is_authenticated:
yield Unauthenticated()
else:
json_data = json.loads(MessageToJson(response))
if "chan_pending" in json_data:
cp = json_data["chan_pending"]
txid = cp["txid"] if "txid" in cp else ""
output_index = cp[
"output_index"] if "output_index" in cp else 0
yield ChannelPendingUpdate(
channel_point=ChannelPoint(txid, output_index))
elif "confirmation" in json_data:
conf = json_data["confirmation"]
block_sha = conf[
"block_sha"] if "block_sha" in conf else ""
block_height = conf[
"block_height"] if "block_height" in conf else 0
num_confs_left = conf[
"num_confs_left"] if "num_confs_left" in conf else 0
yield ChannelConfirmationUpdate(
block_sha=block_sha,
block_height=block_height,
num_confs_left=num_confs_left)
elif "chan_open" in json_data:
co = json_data["chan_open"]["channel_point"]
txid = co[
"funding_txid_bytes"] if "funding_txid_bytes" in co else ""
output_index = cp[
"output_index"] if "output_index" in co else 0
yield ChannelOpenUpdate(
channel_point=ChannelPoint(txid, output_index))
except RpcError as grpc_error:
# pylint: disable=E1101
print(grpc_error)
print(grpc_error.details())
yield OpenChannelError(grpc_error.details())
except Exception as exc:
print(exc)
yield ServerError(error_message=exc)
def start_daemon_mutation(wallet: LNDWallet,
autopilot: bool,
wallet_password: str,
recovery_window: int = 0) -> LnInfoType:
cfg = build_lnd_wallet_config(wallet.pk)
if lnd_instance_is_running(cfg):
return StartDaemonInstanceIsAlreadyRunning()
try:
args = build_lnd_startup_args(autopilot, wallet)
# Start LND instance
subprocess.Popen(
args["args"],
cwd=r'{}'.format(args["data_dir"]),
preexec_fn=os.setpgrp)
time.sleep(2)
except grpc.RpcError as exc:
# pylint: disable=E1101
print(exc)
return ServerError.generic_rpc_error(exc.code(), exc.details())
# build the channel to the newly started daemon
channel_data = build_grpc_channel_manual(
rpc_server="127.0.0.1",
rpc_port=cfg.rpc_listen_port_ipv4,
cert_path=cfg.tls_cert_path,
macaroon_path=cfg.admin_macaroon_path)
if channel_data.error is not None:
return channel_data.error
# unlock the wallet
stub = lnrpc.WalletUnlockerStub(channel_data.channel)
request = ln.UnlockWalletRequest(
wallet_password=wallet_password.encode(),
recovery_window=recovery_window)
stub.UnlockWallet(request)
# LND requires a few seconds after unlocking until
# it's fully operational
time.sleep(5)
# Unlocking the wallet requires a rebuild of the channel
channel_data = build_grpc_channel_manual(
rpc_server="127.0.0.1",
rpc_port=cfg.rpc_listen_port_ipv4,
cert_path=cfg.tls_cert_path,
macaroon_path=cfg.admin_macaroon_path,
rebuild=True)
if channel_data.error is not None:
return channel_data.error
# get the latest info
stub = lnrpc.LightningStub(channel_data.channel)
request = ln.GetInfoRequest()
try:
response = stub.GetInfo(
request, metadata=[('macaroon', channel_data.macaroon)])
except grpc.RpcError as exc:
# pylint: disable=E1101
print(exc)
return ServerError.generic_rpc_error(exc.code(), exc.details())
json_data = json.loads(
MessageToJson(
response,
preserving_proto_field_name=True,
including_default_value_fields=True,
))
return StartDaemonSuccess(info=LnInfoType(json_data))
async def resolve_close_channel_subscription(self,
info,
funding_txid,
output_index,
force,
target_conf=None,
sat_per_byte=None):
try:
if not info.context["user"].is_authenticated:
yield Unauthenticated()
except AttributeError as exc:
print(exc)
yield ServerError(
"A server internal error (AttributeError) has occurred. :-(")
res = LNDWallet.objects.filter(owner=info.context["user"])
if not res:
yield WalletInstanceNotFound()
cfg = build_lnd_wallet_config(res.first().pk)
channel_data = build_grpc_channel_manual(
rpc_server="127.0.0.1",
rpc_port=cfg.rpc_listen_port_ipv4,
cert_path=cfg.tls_cert_path,
macaroon_path=cfg.admin_macaroon_path,
is_async=True)
if channel_data.error is not None:
yield channel_data.error
try:
stub = lnrpc.LightningStub(channel_data.channel)
request = ln.CloseChannelRequest(
channel_point={
"funding_txid_str": funding_txid,
"output_index": output_index
},
force=force,
target_conf=target_conf,
sat_per_byte=sat_per_byte,
)
except Exception as exc:
print(exc)
yield ServerError(error_message=str(exc))
try:
async for response in stub.CloseChannel(
request, metadata=[('macaroon', channel_data.macaroon)]):
if not info.context["user"].is_authenticated:
yield Unauthenticated()
else:
json_data = json.loads(MessageToJson(response))
if "close_pending" in json_data:
cp = json_data["close_pending"]
txid = cp["txid"] if "txid" in cp else ""
output_index = cp[
"output_index"] if "output_index" in cp else 0
yield ChannelClosePendingUpdate(txid=txid)
elif "chan_close" in json_data:
cc = json_data["chan_close"]
txid = cc[
"closing_txid"] if "closing_txid" in cc else ""
success = cc["success"] if "success" in cc else False
yield ChannelCloseUpdate(closing_txid=txid, success=success)
else:
msg = "Unknown update from LND: {}".format(json_data)
print(msg)
yield ServerError(error_message=msg)
except RpcError as grpc_error:
# pylint: disable=E1101
print(grpc_error)
print(grpc_error.details())
yield CloseChannelError(grpc_error.details())
except Exception as exc:
print(exc)
yield ServerError(error_message=exc)
