c802dbe9fe
A device can now be identified by a protocol and a name. This allows to have multiple types of devices providing the same protocol. The selection of which device manager to use for specific protocol will be added in following patches. Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com> Change-Id: Ib4a6c323ba6a2a5d36ff958ddc40631fd9329cb1 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11683 Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com> Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com>
104 lines
3.8 KiB
Python
104 lines
3.8 KiB
Python
from concurrent import futures
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from contextlib import contextmanager
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from multiprocessing import Lock
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import grpc
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import logging
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from .device import DeviceException
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from .proto import sma_pb2 as pb2
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from .proto import sma_pb2_grpc as pb2_grpc
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class StorageManagementAgent(pb2_grpc.StorageManagementAgentServicer):
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def __init__(self, addr, port):
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self._devices = {}
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self._server = grpc.server(futures.ThreadPoolExecutor(max_workers=1))
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self._server.add_insecure_port(f'{addr}:{port}')
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pb2_grpc.add_StorageManagementAgentServicer_to_server(self, self._server)
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def _grpc_method(f):
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def wrapper(self, request, context):
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logging.debug(f'{f.__name__}\n{request}')
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return f(self, request, context)
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return wrapper
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def register_device(self, device_manager):
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self._devices[device_manager.protocol] = device_manager
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def run(self):
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self._server.start()
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self._server.wait_for_termination()
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def _find_device_by_name(self, name):
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return self._devices.get(name)
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def _find_device_by_handle(self, handle):
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for device in self._devices.values():
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try:
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if device.owns_device(handle):
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return device
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except NotImplementedError:
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pass
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return None
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@_grpc_method
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def CreateDevice(self, request, context):
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response = pb2.CreateDeviceResponse()
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try:
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manager = self._find_device_by_name(request.WhichOneof('params'))
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if manager is None:
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raise DeviceException(grpc.StatusCode.INVALID_ARGUMENT,
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'Unsupported device type')
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response = manager.create_device(request)
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except DeviceException as ex:
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context.set_details(ex.message)
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context.set_code(ex.code)
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except NotImplementedError:
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context.set_details('Method is not implemented by selected device type')
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context.set_code(grpc.StatusCode.UNIMPLEMENTED)
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return response
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@_grpc_method
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def DeleteDevice(self, request, context):
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response = pb2.DeleteDeviceResponse()
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try:
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device = self._find_device_by_handle(request.handle)
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if device is None:
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raise DeviceException(grpc.StatusCode.NOT_FOUND,
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'Invalid device handle')
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device.delete_device(request)
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except DeviceException as ex:
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context.set_details(ex.message)
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context.set_code(ex.code)
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except NotImplementedError:
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context.set_details('Method is not implemented by selected device type')
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context.set_code(grpc.StatusCode.UNIMPLEMENTED)
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return response
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@_grpc_method
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def AttachVolume(self, request, context):
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response = pb2.AttachVolumeResponse()
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try:
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device = self._find_device_by_handle(request.device_handle)
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if device is None:
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raise DeviceException(grpc.StatusCode.NOT_FOUND, 'Invalid device handle')
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device.attach_volume(request)
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except DeviceException as ex:
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context.set_details(ex.message)
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context.set_code(ex.code)
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except NotImplementedError:
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context.set_details('Method is not implemented by selected device type')
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context.set_code(grpc.StatusCode.UNIMPLEMENTED)
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return response
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@_grpc_method
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def DetachVolume(self, request, context):
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response = pb2.DetachVolumeResponse()
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try:
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device = self._find_device_by_handle(request.device_handle)
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if device is not None:
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device.detach_volume(request)
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except DeviceException as ex:
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context.set_details(ex.message)
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context.set_code(ex.code)
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return response
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