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feat: wipe devices before using if enabled
Signed-off-by: Suleyman Akbas <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| package dmsetup | ||
|
|
||
| import ( | ||
| "errors" | ||
| "fmt" | ||
| "strings" | ||
|
|
||
| "github.com/openshift/lvm-operator/pkg/internal/exec" | ||
| ) | ||
|
|
||
| var ( | ||
| DefaultDMSetup = "/usr/sbin/dmsetup" | ||
| ErrReferenceNotFound = errors.New("device-mapper reference not found") | ||
| ) | ||
|
|
||
| type Dmsetup interface { | ||
| Remove(deviceName string) error | ||
| } | ||
|
|
||
| type HostDmsetup struct { | ||
| exec.Executor | ||
| dmsetup string | ||
| } | ||
|
|
||
| func NewDefaultHostDmsetup() *HostDmsetup { | ||
| return NewHostDmsetup(&exec.CommandExecutor{}, DefaultDMSetup) | ||
| } | ||
|
|
||
| func NewHostDmsetup(executor exec.Executor, dmsetup string) *HostDmsetup { | ||
| return &HostDmsetup{ | ||
| Executor: executor, | ||
| dmsetup: dmsetup, | ||
| } | ||
| } | ||
|
|
||
| // Remove removes the device's reference from the device-mapper | ||
| func (dmsetup *HostDmsetup) Remove(deviceName string) error { | ||
| if len(deviceName) == 0 { | ||
| return errors.New("failed to remove device-mapper reference. Device name is empty") | ||
| } | ||
|
|
||
| args := []string{"remove"} | ||
| args = append(args, deviceName) | ||
| output, err := dmsetup.ExecuteCommandWithOutputAsHost(dmsetup.dmsetup, args...) | ||
| if err != nil { | ||
| if strings.Contains(output, "not found") { | ||
| return ErrReferenceNotFound | ||
| } | ||
| return fmt.Errorf("failed to remove the reference from device-mapper %q: %v", deviceName, err) | ||
| } | ||
|
|
||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| package dmsetup | ||
|
|
||
| import ( | ||
| "errors" | ||
| "fmt" | ||
| "testing" | ||
|
|
||
| mockExec "github.com/openshift/lvm-operator/pkg/internal/exec/test" | ||
| "github.com/stretchr/testify/assert" | ||
| ) | ||
|
|
||
| func TestRemove(t *testing.T) { | ||
| tests := []struct { | ||
| name string | ||
| deviceName string | ||
| wantErr bool | ||
| }{ | ||
| {"Empty device name", "", true}, | ||
| {"Existing device name", "/dev/loop1", false}, | ||
| {"Non-existing device name", "/dev/loop2", true}, | ||
| } | ||
|
|
||
| executor := &mockExec.MockExecutor{ | ||
| MockExecuteCommandWithOutputAsHost: func(command string, args ...string) (string, error) { | ||
| if args[0] != "remove" { | ||
| return "", fmt.Errorf("invalid args %q", args[0]) | ||
| } | ||
| if args[1] == "/dev/loop1" { | ||
| return "", nil | ||
| } else if args[1] == "/dev/loop2" { | ||
| return "device loop2 not found", errors.New("device loop2 not found") | ||
| } | ||
| return "", fmt.Errorf("invalid args %q", args[1]) | ||
| }, | ||
| } | ||
|
|
||
| for _, tt := range tests { | ||
| t.Run(tt.name, func(t *testing.T) { | ||
| err := NewHostDmsetup(executor, DefaultDMSetup).Remove(tt.deviceName) | ||
| if tt.wantErr { | ||
| assert.Error(t, err) | ||
| } else { | ||
| assert.NoError(t, err) | ||
| } | ||
| }) | ||
| } | ||
| } |
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