Bring elemental-cli code into the agent (#13)

pkg/cloudinit/layout_plugin.go

@@ -0,0 +1,117 @@
+/*
+Copyright © 2022 SUSE LLC
+
+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 cloudinit
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+
+	"github.com/kairos-io/kairos/v2/pkg/constants"
+	"github.com/kairos-io/kairos/v2/pkg/partitioner"
+	v1 "github.com/kairos-io/kairos/v2/pkg/types/v1"
+	"github.com/kairos-io/kairos/v2/pkg/utils"
+	"github.com/mudler/yip/pkg/logger"
+	"github.com/mudler/yip/pkg/plugins"
+	"github.com/mudler/yip/pkg/schema"
+	"github.com/twpayne/go-vfs"
+)
+
+// layoutPlugin is the elemental's implementation of Layout yip's plugin based
+// on partitioner package
+func layoutPlugin(l logger.Interface, s schema.Stage, fs vfs.FS, console plugins.Console) (err error) {
+	if s.Layout.Device == nil {
+		return nil
+	}
+
+	var dev *partitioner.Disk
+	elemConsole, ok := console.(*cloudInitConsole)
+	if !ok {
+		return errors.New("provided console is not an instance of 'cloudInitConsole' type")
+	}
+	runner := elemConsole.getRunner()
+	log, ok := l.(v1.Logger)
+	if !ok {
+		return errors.New("provided logger is not implementing v1.Logger interface")
+	}
+
+	if len(strings.TrimSpace(s.Layout.Device.Label)) > 0 {
+		partDevice, err := utils.GetFullDeviceByLabel(runner, s.Layout.Device.Label, 5)
+		if err != nil {
+			l.Errorf("Exiting, disk not found:\n %s", err.Error())
+			return err
+		}
+		dev = partitioner.NewDisk(
+			partDevice.Disk,
+			partitioner.WithRunner(runner),
+			partitioner.WithLogger(log),
+			partitioner.WithFS(fs),
+		)
+	} else if len(strings.TrimSpace(s.Layout.Device.Path)) > 0 {
+		dev = partitioner.NewDisk(
+			s.Layout.Device.Path,
+			partitioner.WithRunner(runner),
+			partitioner.WithLogger(log),
+			partitioner.WithFS(fs),
+		)
+	} else {
+		l.Warnf("No target device defined, nothing to do")
+		return nil
+	}
+
+	if !dev.Exists() {
+		l.Errorf("Exiting, disk not found:\n %s", s.Layout.Device.Path)
+		return errors.New("Target disk not found")
+	}
+
+	if s.Layout.Expand != nil {
+		l.Infof("Extending last partition up to %d MiB", s.Layout.Expand.Size)
+		out, err := dev.ExpandLastPartition(s.Layout.Expand.Size)
+		if err != nil {
+			l.Error(out)
+			return err
+		}
+	}
+
+	for _, part := range s.Layout.Parts {
+		_, err := utils.GetFullDeviceByLabel(runner, part.FSLabel, 1)
+		if err == nil {
+			l.Warnf("Partition with FSLabel: %s already exists, ignoring", part.FSLabel)
+			continue
+		}
+
+		// Set default filesystem
+		if part.FileSystem == "" {
+			part.FileSystem = constants.LinuxFs
+		}
+
+		l.Infof("Creating %s partition", part.FSLabel)
+		partNum, err := dev.AddPartition(part.Size, part.FileSystem, part.PLabel)
+		if err != nil {
+			return fmt.Errorf("Failed creating partitions: %w", err)
+		}
+
+		if part.FileSystem != "-" {
+			out, err := dev.FormatPartition(partNum, part.FileSystem, part.FSLabel)
+			if err != nil {
+				return fmt.Errorf("Formatting partition failed: %s\nError: %w", out, err)
+			}
+		}
+		return nil
+	}
+	return nil
+}