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https://github.com/ceph/ceph-csi.git
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32839948ef
The internal/ directory in Go has a special meaning, and indicates that those packages are not meant for external consumption. Ceph-CSI does provide public APIs for other projects to consume. There is no plan to keep the API of the internally used packages stable. Closes: #903 Signed-off-by: Niels de Vos <ndevos@redhat.com>
135 lines
3.8 KiB
Go
135 lines
3.8 KiB
Go
/*
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Copyright 2018 The Ceph-CSI Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cephfs
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"os"
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"os/exec"
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"github.com/ceph/ceph-csi/internal/util"
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"github.com/container-storage-interface/spec/lib/go/csi"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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"k8s.io/klog"
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)
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type volumeID string
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func execCommand(ctx context.Context, program string, args ...string) (stdout, stderr []byte, err error) {
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var (
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cmd = exec.Command(program, args...) // nolint: gosec, #nosec
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sanitizedArgs = util.StripSecretInArgs(args)
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stdoutBuf bytes.Buffer
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stderrBuf bytes.Buffer
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)
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cmd.Stdout = &stdoutBuf
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cmd.Stderr = &stderrBuf
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klog.V(4).Infof(util.Log(ctx, "cephfs: EXEC %s %s"), program, sanitizedArgs)
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if err := cmd.Run(); err != nil {
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if cmd.Process == nil {
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return nil, nil, fmt.Errorf("cannot get process pid while running %s %v: %v: %s",
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program, sanitizedArgs, err, stderrBuf.Bytes())
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}
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return nil, nil, fmt.Errorf("an error occurred while running (%d) %s %v: %v: %s",
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cmd.Process.Pid, program, sanitizedArgs, err, stderrBuf.Bytes())
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}
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return stdoutBuf.Bytes(), stderrBuf.Bytes(), nil
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}
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func execCommandErr(ctx context.Context, program string, args ...string) error {
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_, _, err := execCommand(ctx, program, args...)
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return err
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}
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//nolint: unparam
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func execCommandJSON(ctx context.Context, v interface{}, program string, args ...string) error {
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stdout, _, err := execCommand(ctx, program, args...)
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if err != nil {
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return err
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}
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if err = json.Unmarshal(stdout, v); err != nil {
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return fmt.Errorf("failed to unmarshal JSON for %s %v: %s: %v", program, util.StripSecretInArgs(args), stdout, err)
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}
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return nil
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}
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func pathExists(p string) bool {
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_, err := os.Stat(p)
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return err == nil
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}
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// Controller service request validation
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func (cs *ControllerServer) validateCreateVolumeRequest(req *csi.CreateVolumeRequest) error {
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if err := cs.Driver.ValidateControllerServiceRequest(csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME); err != nil {
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return fmt.Errorf("invalid CreateVolumeRequest: %v", err)
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}
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if req.GetName() == "" {
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return status.Error(codes.InvalidArgument, "volume Name cannot be empty")
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}
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reqCaps := req.GetVolumeCapabilities()
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if reqCaps == nil {
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return status.Error(codes.InvalidArgument, "volume Capabilities cannot be empty")
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}
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for _, cap := range reqCaps {
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if cap.GetBlock() != nil {
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return status.Error(codes.Unimplemented, "block volume not supported")
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}
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}
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return nil
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}
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func (cs *ControllerServer) validateDeleteVolumeRequest() error {
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if err := cs.Driver.ValidateControllerServiceRequest(csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME); err != nil {
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return fmt.Errorf("invalid DeleteVolumeRequest: %v", err)
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}
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return nil
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}
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// Controller expand volume request validation
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func (cs *ControllerServer) validateExpandVolumeRequest(req *csi.ControllerExpandVolumeRequest) error {
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if err := cs.Driver.ValidateControllerServiceRequest(csi.ControllerServiceCapability_RPC_EXPAND_VOLUME); err != nil {
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return fmt.Errorf("invalid ExpandVolumeRequest: %v", err)
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}
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if req.GetVolumeId() == "" {
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return status.Error(codes.InvalidArgument, "Volume ID cannot be empty")
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}
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capRange := req.GetCapacityRange()
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if capRange == nil {
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return status.Error(codes.InvalidArgument, "CapacityRange cannot be empty")
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}
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return nil
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}
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