1
0
mirror of https://github.com/ceph/ceph-csi.git synced 2024-12-22 04:50:23 +00:00
ceph-csi/internal/util/connection.go
Niels de Vos 28369702d2 nfs: use go-ceph API for creating/deleting exports
Recent versions of Ceph allow calling the NFS-export management
functions over the go-ceph API.

This seems incompatible with older versions that have been tested with
the `ceph nfs` commands that this commit replaces.

Signed-off-by: Niels de Vos <ndevos@redhat.com>
2022-04-14 08:01:45 +00:00

154 lines
3.8 KiB
Go

/*
Copyright 2020 The Ceph-CSI Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package util
import (
"errors"
"fmt"
"time"
ca "github.com/ceph/go-ceph/cephfs/admin"
"github.com/ceph/go-ceph/common/admin/nfs"
"github.com/ceph/go-ceph/rados"
ra "github.com/ceph/go-ceph/rbd/admin"
)
type ClusterConnection struct {
// connection
conn *rados.Conn
// FIXME: temporary reference for credentials. Remove this when go-ceph
// is used for operations.
Creds *Credentials
discardOnZeroedWriteSameDisabled bool
}
var (
// large interval and timeout, it should be longer than the maximum
// time an operation can take (until refcounting of the connections is
// available).
cpInterval = 15 * time.Minute
cpExpiry = 10 * time.Minute
connPool = NewConnPool(cpInterval, cpExpiry)
)
// rbdVol.Connect() connects to the Ceph cluster and sets rbdVol.conn for further usage.
func (cc *ClusterConnection) Connect(monitors string, cr *Credentials) error {
if cc.conn == nil {
conn, err := connPool.Get(monitors, cr.ID, cr.KeyFile)
if err != nil {
return fmt.Errorf("failed to get connection: %w", err)
}
cc.conn = conn
// FIXME: remove .Creds from ClusterConnection
cc.Creds = cr
}
return nil
}
func (cc *ClusterConnection) Destroy() {
if cc.conn != nil {
connPool.Put(cc.conn)
}
}
// Copy creates a copy of the ClusterConnection. This is needed when an other
// object needs to use the existing connection.
// It is required to call Destroy() once the (copied) connection is not used
// anymore.
func (cc *ClusterConnection) Copy() *ClusterConnection {
if cc.conn == nil {
return nil
}
c := ClusterConnection{}
c.discardOnZeroedWriteSameDisabled = cc.discardOnZeroedWriteSameDisabled
c.conn = connPool.Copy(cc.conn)
c.Creds = cc.Creds
return &c
}
func (cc *ClusterConnection) GetIoctx(pool string) (*rados.IOContext, error) {
if cc.conn == nil {
return nil, errors.New("cluster is not connected yet")
}
ioctx, err := cc.conn.OpenIOContext(pool)
if err != nil {
// ErrNotFound indicates the Pool was not found
if errors.Is(err, rados.ErrNotFound) {
err = JoinErrors(ErrPoolNotFound, err)
} else {
err = fmt.Errorf("failed to open IOContext for pool %s: %w", pool, err)
}
return nil, err
}
return ioctx, nil
}
func (cc *ClusterConnection) GetFSAdmin() (*ca.FSAdmin, error) {
if cc.conn == nil {
return nil, errors.New("cluster is not connected yet")
}
return ca.NewFromConn(cc.conn), nil
}
func (cc *ClusterConnection) GetFSID() (string, error) {
if cc.conn == nil {
return "", errors.New("cluster is not connected yet")
}
return cc.conn.GetFSID()
}
// GetRBDAdmin get RBDAdmin to administrate rbd volumes.
func (cc *ClusterConnection) GetRBDAdmin() (*ra.RBDAdmin, error) {
if cc.conn == nil {
return nil, errors.New("cluster is not connected yet")
}
return ra.NewFromConn(cc.conn), nil
}
// GetTaskAdmin returns TaskAdmin to add tasks on rbd images.
func (cc *ClusterConnection) GetTaskAdmin() (*ra.TaskAdmin, error) {
rbdAdmin, err := cc.GetRBDAdmin()
if err != nil {
return nil, err
}
return rbdAdmin.Task(), nil
}
// GetNFSAdmin returns an Admin type that can be used to interact with the
// NFS-cluster that is managed by Ceph.
func (cc *ClusterConnection) GetNFSAdmin() (*nfs.Admin, error) {
if cc.conn == nil {
return nil, errors.New("cluster is not connected yet")
}
return nfs.NewFromConn(cc.conn), nil
}