dcc2210b3c
* So that we can pass extra loop options like Direct I/O * To workaround an issue with loop device files not getting automatically created
148 lines
5.0 KiB
Python
148 lines
5.0 KiB
Python
import grpc
|
|
from google.protobuf.wrappers_pb2 import BoolValue
|
|
|
|
import rawfile_util
|
|
from csi import csi_pb2, csi_pb2_grpc
|
|
from orchestrator.k8s import volume_to_node, run_on_node
|
|
from rawfile_util import attach_loop
|
|
from remote import init_rawfile, scrub
|
|
from util import log_grpc_request, run
|
|
|
|
NODE_NAME_TOPOLOGY_KEY = "hostname"
|
|
|
|
|
|
class RawFileIdentityServicer(csi_pb2_grpc.IdentityServicer):
|
|
@log_grpc_request
|
|
def GetPluginInfo(self, request, context):
|
|
return csi_pb2.GetPluginInfoResponse(
|
|
name="rawfile.hamravesh.com", vendor_version="0.0.1"
|
|
)
|
|
|
|
@log_grpc_request
|
|
def GetPluginCapabilities(self, request, context):
|
|
Cap = csi_pb2.PluginCapability
|
|
return csi_pb2.GetPluginCapabilitiesResponse(
|
|
capabilities=[
|
|
Cap(service=Cap.Service(type=Cap.Service.CONTROLLER_SERVICE)),
|
|
Cap(
|
|
service=Cap.Service(
|
|
type=Cap.Service.VOLUME_ACCESSIBILITY_CONSTRAINTS
|
|
)
|
|
),
|
|
]
|
|
)
|
|
|
|
@log_grpc_request
|
|
def Probe(self, request, context):
|
|
return csi_pb2.ProbeResponse(ready=BoolValue(value=True))
|
|
|
|
|
|
class RawFileNodeServicer(csi_pb2_grpc.NodeServicer):
|
|
def __init__(self, node_name):
|
|
self.node_name = node_name
|
|
|
|
@log_grpc_request
|
|
def NodeGetCapabilities(self, request, context):
|
|
return csi_pb2.NodeGetCapabilitiesResponse(capabilities=[])
|
|
|
|
@log_grpc_request
|
|
def NodePublishVolume(self, request, context):
|
|
mount_path = request.target_path
|
|
img_file = rawfile_util.img_file(request.volume_id)
|
|
loop_file = attach_loop(img_file)
|
|
run(f"mount {loop_file} {mount_path}")
|
|
return csi_pb2.NodePublishVolumeResponse()
|
|
|
|
@log_grpc_request
|
|
def NodeUnpublishVolume(self, request, context):
|
|
mount_path = request.target_path
|
|
run(f"umount {mount_path}")
|
|
return csi_pb2.NodeUnpublishVolumeResponse()
|
|
|
|
@log_grpc_request
|
|
def NodeGetInfo(self, request, context):
|
|
return csi_pb2.NodeGetInfoResponse(
|
|
node_id=self.node_name,
|
|
accessible_topology=csi_pb2.Topology(
|
|
segments={NODE_NAME_TOPOLOGY_KEY: self.node_name}
|
|
),
|
|
)
|
|
|
|
|
|
class RawFileControllerServicer(csi_pb2_grpc.ControllerServicer):
|
|
@log_grpc_request
|
|
def ControllerGetCapabilities(self, request, context):
|
|
Cap = csi_pb2.ControllerServiceCapability
|
|
return csi_pb2.ControllerGetCapabilitiesResponse(
|
|
capabilities=[Cap(rpc=Cap.RPC(type=Cap.RPC.CREATE_DELETE_VOLUME))]
|
|
)
|
|
|
|
@log_grpc_request
|
|
def CreateVolume(self, request, context):
|
|
# TODO: volume_capabilities
|
|
|
|
if len(request.volume_capabilities) != 1:
|
|
context.abort(
|
|
grpc.StatusCode.INVALID_ARGUMENT, "Exactly one cap is supported"
|
|
)
|
|
|
|
volume_capability = request.volume_capabilities[0]
|
|
|
|
AccessModeEnum = csi_pb2.VolumeCapability.AccessMode.Mode
|
|
if volume_capability.access_mode.mode not in [
|
|
AccessModeEnum.SINGLE_NODE_WRITER
|
|
]:
|
|
context.abort(
|
|
grpc.StatusCode.INVALID_ARGUMENT,
|
|
f"Unsupported access mode: {AccessModeEnum.Name(volume_capability.access_mode.mode)}",
|
|
)
|
|
|
|
access_type = volume_capability.WhichOneof("access_type")
|
|
if access_type == "mount":
|
|
pass
|
|
elif access_type == "block":
|
|
context.abort(
|
|
grpc.StatusCode.INVALID_ARGUMENT, "Block mode not supported (yet)"
|
|
)
|
|
else:
|
|
context.abort(
|
|
grpc.StatusCode.INVALID_ARGUMENT, f"Unknown access type: {access_type}"
|
|
)
|
|
|
|
size = request.capacity_range.required_bytes
|
|
size = max(size, 10 * 1024 * 1024) # At least 10MB
|
|
|
|
try:
|
|
node_name = request.accessibility_requirements.preferred[0].segments[
|
|
NODE_NAME_TOPOLOGY_KEY
|
|
]
|
|
except IndexError:
|
|
context.abort(
|
|
grpc.StatusCode.INVALID_ARGUMENT,
|
|
"No preferred topology set. Is external-provisioner running in strict-topology mode?",
|
|
)
|
|
except KeyError:
|
|
context.abort(
|
|
grpc.StatusCode.INVALID_ARGUMENT, "Topology key not found... why?"
|
|
)
|
|
|
|
run_on_node(
|
|
init_rawfile.as_cmd(volume_id=request.name, size=size), node=node_name
|
|
)
|
|
|
|
return csi_pb2.CreateVolumeResponse(
|
|
volume=csi_pb2.Volume(
|
|
volume_id=request.name,
|
|
capacity_bytes=size,
|
|
accessible_topology=[
|
|
csi_pb2.Topology(segments={NODE_NAME_TOPOLOGY_KEY: node_name})
|
|
],
|
|
)
|
|
)
|
|
|
|
@log_grpc_request
|
|
def DeleteVolume(self, request, context):
|
|
node_name = volume_to_node(request.volume_id)
|
|
run_on_node(scrub.as_cmd(volume_id=request.volume_id), node=node_name)
|
|
return csi_pb2.DeleteVolumeResponse()
|