0x55555555
commented
3 years ago Hello @neuropathbasel,
When communicating with remote hosts, you must use tls (the examples dont support that in order to be concise).
You will also need to use port 9502 for the manager.
For example:
import argparse
from minknow_api.manager import Manager
def main():
"""Main entrypoint for list_sequencing_devices example"""
parser = argparse.ArgumentParser(
description="List sequencing positions connected to a host."
)
parser.add_argument(
"--host", default="localhost", help="Specify which host to connect to."
)
parser.add_argument(
"--port", default=None, help="Specify which porer to connect to."
)
args = parser.parse_args()
# Construct a manager using the host + port provided.
manager = Manager(host=args.host, port=args.port, use_tls=True) # Enable TLS
# Find a list of currently available sequencing positions.
positions = manager.flow_cell_positions()
# Print out available positions.
print("Available sequencing positions on %s:%s:" % (args.host, args.port))
for pos in positions:
print("%s: %s" % (pos.name, pos.state))
if pos.running:
print(" secure: %s" % pos.description.rpc_ports.secure)
print(" insecure: %s" % pos.description.rpc_ports.insecure)
# User could call {pos.connect()} here to connect to the running MinKNOW instance.
if __name__ == "__main__":
main()
JensUweUlrich
neuropathbasel
Hello, Many thanks for forwarding me here. First step on the local linux machine worked fine and prompted:
~/minknow_api$ python ./python/examples/list_sequencing_positions.py --host localhost --port 9501 Available sequencing positions on localhost:9501: MN32638: running secure: 8001 insecure: 8000
However, issues started with the attempt to obtain a similar readout form an identical second machine in the same subnet running under 192.18.01.18. On this machine MinKNOW GUI Installed version: 4.1.22 is running and a Minion is attached to it via USB 3. This unit is “detected” by the local MinKNOW GUI.
Running on the first linux machine ~/minknow_api$ python ./python/examples/list_sequencing_positions.py --host 192.168.1.18 --port 9501
yields: Traceback (most recent call last): File "./python/examples/list_sequencing_positions.py", line 41, in
main()
File "./python/examples/list_sequencing_positions.py", line 23, in main
manager = Manager(host=args.host, port=args.port, use_tls=False)
File "/home/user/minknow_api/gRPC/lib/python3.7/site-packages/minknow_api/manager.py", line 108, in init
minknow_api.manager_service.GetVersionInfoRequest()
File "/home/user/minknow_api/gRPC/lib/python3.7/site-packages/grpc/_channel.py", line 946, in call
return _end_unary_response_blocking(state, call, False, None)
File "/home/user/minknow_api/gRPC/lib/python3.7/site-packages/grpc/_channel.py", line 849, in _end_unary_response_blocking
raise _InactiveRpcError(state)
grpc._channel._InactiveRpcError: <_InactiveRpcError of RPC that terminated with:
status = StatusCode.UNAVAILABLE
details = "failed to connect to all addresses"
debug_error_string = "{"created":"@1618939002.979941782","description":"Failed to pick subchannel","file":"src/core/ext/filters/client_channel/client_channel.cc","file_line":5419,"referenced_errors":[{"created":"@1618939002.979938522","description":"failed to connect to all addresses","file":"src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.cc","file_line":397,"grpc_status":14}]}"
ping to 192.168.1.18 yields an immediate reply.
Different attempts and the content of manager.py and manager_service.py imply to me that remote hosts are (so far ?) not supported.
Could you please let me know if gRPC calls to remote machine via the minknow_api are supported? Many thanks Claus