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package driver
import (
"fmt"
"os"
"os/signal"
"path/filepath"
"syscall"
"github.com/container-storage-interface/spec/lib/go/csi"
"github.com/seaweedfs/seaweedfs-csi-driver/pkg/datalocality"
"github.com/seaweedfs/seaweedfs-csi-driver/pkg/mountmanager"
"github.com/seaweedfs/seaweedfs/weed/glog"
"github.com/seaweedfs/seaweedfs/weed/pb"
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
"github.com/seaweedfs/seaweedfs/weed/security"
"github.com/seaweedfs/seaweedfs/weed/util"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
var (
version = "1.0.0"
)
type SeaweedFsDriver struct {
name string
nodeID string
version string
endpoint string
mountEndpoint string
volumeSocketDir string // directory for volume sockets, derived from mountEndpoint
vcap []*csi.VolumeCapability_AccessMode
cscap []*csi.ControllerServiceCapability
filers []pb.ServerAddress
filerIndex int
grpcDialOption grpc.DialOption
ConcurrentWriters int
CacheCapacityMB int
CacheDir string
UidMap string
GidMap string
signature int32
DataCenter string
DataLocality datalocality.DataLocality
RunNode bool
RunController bool
}
func NewSeaweedFsDriver(name, filer, nodeID, endpoint, mountEndpoint string, enableAttacher bool) *SeaweedFsDriver {
glog.Infof("Driver: %v version: %v", name, version)
util.LoadConfiguration("security", false)
// Derive volumeSocketDir from mountEndpoint
volumeSocketDir := mountmanager.DefaultSocketDir
if mountEndpoint != "" {
_, address, err := mountmanager.ParseEndpoint(mountEndpoint)
if err != nil {
glog.Warningf("invalid mount endpoint %q, using default socket directory %q: %v", mountEndpoint, volumeSocketDir, err)
} else if address != "" {
volumeSocketDir = filepath.Dir(address)
}
}
n := &SeaweedFsDriver{
endpoint: endpoint,
mountEndpoint: mountEndpoint,
volumeSocketDir: volumeSocketDir,
nodeID: nodeID,
name: name,
version: version,
filers: pb.ServerAddresses(filer).ToAddresses(),
grpcDialOption: security.LoadClientTLS(util.GetViper(), "grpc.client"),
signature: util.RandomInt32(),
}
n.AddVolumeCapabilityAccessModes([]csi.VolumeCapability_AccessMode_Mode{
csi.VolumeCapability_AccessMode_MULTI_NODE_MULTI_WRITER,
csi.VolumeCapability_AccessMode_SINGLE_NODE_WRITER,
csi.VolumeCapability_AccessMode_SINGLE_NODE_MULTI_WRITER,
csi.VolumeCapability_AccessMode_SINGLE_NODE_SINGLE_WRITER,
})
n.AddControllerServiceCapabilities([]csi.ControllerServiceCapability_RPC_Type{
csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME,
csi.ControllerServiceCapability_RPC_SINGLE_NODE_MULTI_WRITER,
csi.ControllerServiceCapability_RPC_EXPAND_VOLUME,
})
// we need this just only for csi-attach, but we do nothing for attach/detach
if enableAttacher {
n.AddControllerServiceCapabilities([]csi.ControllerServiceCapability_RPC_Type{
csi.ControllerServiceCapability_RPC_PUBLISH_UNPUBLISH_VOLUME,
})
}
return n
}
func (n *SeaweedFsDriver) Run() {
glog.Info("starting")
var controller *ControllerServer
if n.RunController {
controller = NewControllerServer(n)
}
var node *NodeServer
if n.RunNode {
node = NewNodeServer(n)
}
s := NewNonBlockingGRPCServer()
s.Start(n.endpoint,
NewIdentityServer(n),
controller,
node)
stopChan := make(chan os.Signal, 1)
signal.Notify(stopChan, os.Interrupt, syscall.SIGTERM, syscall.SIGHUP)
<-stopChan
glog.Infof("stopping")
s.Stop()
s.Wait()
if node != nil {
glog.Infof("node cleanup")
node.NodeCleanup()
}
glog.Infof("stopped")
}
func (n *SeaweedFsDriver) AddVolumeCapabilityAccessModes(vc []csi.VolumeCapability_AccessMode_Mode) {
for _, c := range vc {
glog.Infof("Enabling volume access mode: %v", c.String())
n.vcap = append(n.vcap, &csi.VolumeCapability_AccessMode{Mode: c})
}
}
func (n *SeaweedFsDriver) AddControllerServiceCapabilities(cl []csi.ControllerServiceCapability_RPC_Type) {
for _, c := range cl {
glog.Infof("Enabling controller service capability: %v", c.String())
n.cscap = append(n.cscap, NewControllerServiceCapability(c))
}
}
func (d *SeaweedFsDriver) ValidateControllerServiceRequest(c csi.ControllerServiceCapability_RPC_Type) error {
if c == csi.ControllerServiceCapability_RPC_UNKNOWN {
return nil
}
for _, cap := range d.cscap {
if c == cap.GetRpc().GetType() {
return nil
}
}
return status.Error(codes.InvalidArgument, fmt.Sprintf("%s", c))
}
var _ = filer_pb.FilerClient(&SeaweedFsDriver{})
func (d *SeaweedFsDriver) WithFilerClient(streamingMode bool, fn func(filer_pb.SeaweedFilerClient) error) error {
return util.Retry("filer grpc", func() error {
i := d.filerIndex
n := len(d.filers)
var err error
for x := 0; x < n; x++ {
err = pb.WithGrpcClient(streamingMode, d.signature, func(grpcConnection *grpc.ClientConn) error {
client := filer_pb.NewSeaweedFilerClient(grpcConnection)
return fn(client)
}, d.filers[i].ToGrpcAddress(), false, d.grpcDialOption)
if err != nil {
glog.V(0).Infof("WithFilerClient %d %v: %v", x, d.filers[i], err)
} else {
d.filerIndex = i
return nil
}
i++
if i >= n {
i = 0
}
}
return err
})
}
func (d *SeaweedFsDriver) AdjustedUrl(location *filer_pb.Location) string {
return location.Url
}
func (d *SeaweedFsDriver) GetDataCenter() string {
return d.DataCenter
}
|
