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config: Add source_file to incus_image
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Signed-off-by: Lucas Bremgartner <[email protected]>
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@breml
breml committed Nov 21, 2024
1 parent cf5c5a2 commit a8742ec
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Showing 2 changed files with 239 additions and 12 deletions.
240 changes: 228 additions & 12 deletions internal/image/resource_image.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,9 @@ package image
import (
"context"
"fmt"
"io"
"os"
"path/filepath"
"strings"

"github.com/hashicorp/terraform-plugin-framework-validators/setvalidator"
Expand All @@ -23,8 +26,10 @@ import (
"github.com/hashicorp/terraform-plugin-framework/tfsdk"
"github.com/hashicorp/terraform-plugin-framework/types"
"github.com/hashicorp/terraform-plugin-framework/types/basetypes"
"github.com/lxc/incus/v6/client"
incus "github.com/lxc/incus/v6/client"
"github.com/lxc/incus/v6/shared/api"
"github.com/lxc/incus/v6/shared/archive"
"github.com/lxc/incus/v6/shared/subprocess"

"github.com/lxc/terraform-provider-incus/internal/errors"
provider_config "github.com/lxc/terraform-provider-incus/internal/provider-config"
Expand All @@ -33,6 +38,7 @@ import (

// ImageModel resource data model that matches the schema.
type ImageModel struct {
SourceFile types.Object `tfsdk:"source_file"`
SourceImage types.Object `tfsdk:"source_image"`
SourceInstance types.Object `tfsdk:"source_instance"`
Aliases types.Set `tfsdk:"aliases"`
Expand All @@ -46,6 +52,11 @@ type ImageModel struct {
CopiedAliases types.Set `tfsdk:"copied_aliases"`
}

type SourceFileModel struct {
DataPath types.String `tfsdk:"data_path"`
MetadataPath types.String `tfsdk:"metadata_path"`
}

type SourceImageModel struct {
Remote types.String `tfsdk:"remote"`
Name types.String `tfsdk:"name"`
Expand Down Expand Up @@ -76,6 +87,18 @@ func (r ImageResource) Metadata(_ context.Context, req resource.MetadataRequest,
func (r ImageResource) Schema(_ context.Context, _ resource.SchemaRequest, resp *resource.SchemaResponse) {
resp.Schema = schema.Schema{
Attributes: map[string]schema.Attribute{
"source_file": schema.SingleNestedAttribute{
Optional: true,
Attributes: map[string]schema.Attribute{
"data_path": schema.StringAttribute{
Required: true,
},
"metadata_path": schema.StringAttribute{
Optional: true,
},
},
},

"source_image": schema.SingleNestedAttribute{
Optional: true,
Attributes: map[string]schema.Attribute{
Expand Down Expand Up @@ -222,18 +245,10 @@ func (r ImageResource) ValidateConfig(ctx context.Context, req resource.Validate
return
}

if config.SourceImage.IsNull() && config.SourceInstance.IsNull() {
if exactlyOne(!config.SourceFile.IsNull(), !config.SourceImage.IsNull(), !config.SourceInstance.IsNull()) {
resp.Diagnostics.AddError(
"Invalid Configuration",
"Either source_image or source_instance must be set.",
)
return
}

if !config.SourceImage.IsNull() && !config.SourceInstance.IsNull() {
resp.Diagnostics.AddError(
"Invalid Configuration",
"Only source_image or source_instance can be set.",
"Exactly one of source_file, source_image or source_instance must be set.",
)
return
}
Expand All @@ -248,7 +263,10 @@ func (r ImageResource) Create(ctx context.Context, req resource.CreateRequest, r
return
}

if !plan.SourceImage.IsNull() {
if !plan.SourceFile.IsNull() {
r.createImageFromSourceFile(ctx, resp, &plan)
return
} else if !plan.SourceImage.IsNull() {
r.createImageFromSourceImage(ctx, resp, &plan)
return
} else if !plan.SourceInstance.IsNull() {
Expand Down Expand Up @@ -444,6 +462,169 @@ func (r ImageResource) SyncState(ctx context.Context, tfState *tfsdk.State, serv
return tfState.Set(ctx, &m)
}

func (r ImageResource) createImageFromSourceFile(ctx context.Context, resp *resource.CreateResponse, plan *ImageModel) {
var sourceFileModel SourceFileModel

diags := plan.SourceFile.As(ctx, &sourceFileModel, basetypes.ObjectAsOptions{})
if diags.HasError() {
resp.Diagnostics.Append(diags...)
return
}

remote := plan.Remote.ValueString()
project := plan.Project.ValueString()
server, err := r.provider.InstanceServer(remote, project, "")
if err != nil {
resp.Diagnostics.Append(errors.NewInstanceServerError(err))
return
}

var dataPath, metadataPath string
if sourceFileModel.MetadataPath.IsNull() {
// Unified image
metadataPath = sourceFileModel.DataPath.ValueString()
} else {
// Split image
dataPath = sourceFileModel.DataPath.ValueString()
metadataPath = sourceFileModel.MetadataPath.ValueString()
}

var image api.ImagesPost
var createArgs *incus.ImageCreateArgs

imageType := "container"
// TODO: should https urls also be supported?
if strings.HasPrefix(dataPath, "https://") {
image.Source = &api.ImagesPostSource{}
image.Source.Type = "url"
image.Source.Mode = "pull"
image.Source.Protocol = "direct"
image.Source.URL = dataPath
createArgs = nil
} else {
var meta io.ReadCloser
var rootfs io.ReadCloser

// Open meta
if utils.IsDir(metadataPath) {
metadataPath, err = packImageDir(metadataPath)
if err != nil {
resp.Diagnostics.AddError(fmt.Sprintf("Failed to pack metadata_path: %s", metadataPath), err.Error())
return
}
// remove temp file
defer func() { _ = os.Remove(metadataPath) }()
}

meta, err = os.Open(metadataPath)
if err != nil {
resp.Diagnostics.AddError(fmt.Sprintf("Failed to open metadata_path: %s", metadataPath), err.Error())
return
}

defer func() { _ = meta.Close() }()

// Open rootfs
if dataPath != "" {
rootfs, err = os.Open(dataPath)
if err != nil {
resp.Diagnostics.AddError(fmt.Sprintf("failed to open data_path: %s", dataPath), err.Error())
return
}

defer func() { _ = rootfs.Close() }()

_, ext, _, err := archive.DetectCompressionFile(rootfs)
if err != nil {
resp.Diagnostics.AddError(fmt.Sprintf("Failed to detect compression of rootfs in data_path: %s", dataPath), err.Error())
return
}

_, err = rootfs.(*os.File).Seek(0, io.SeekStart)
if err != nil {
resp.Diagnostics.AddError(fmt.Sprintf("Failed to seek start for rootfas in data_path: %s", dataPath), err.Error())
return
}

if ext == ".qcow2" {
imageType = "virtual-machine"
}
}

createArgs = &incus.ImageCreateArgs{
MetaFile: meta,
MetaName: filepath.Base(metadataPath),
RootfsFile: rootfs,
RootfsName: filepath.Base(dataPath),
Type: imageType,
}

image.Filename = createArgs.MetaName
}

aliases, diags := ToAliasList(ctx, plan.Aliases)
if diags.HasError() {
resp.Diagnostics.Append(diags...)
return
}

// NOTE: this does not seem to have an effect
// imageAliases := make([]api.ImageAlias, 0, len(aliases))
// for _, alias := range aliases {
// // Ensure image alias does not already exist.
// aliasTarget, _, _ := server.GetImageAlias(alias)
// if aliasTarget != nil {
// resp.Diagnostics.AddError(fmt.Sprintf("Image alias %q already exists", alias), "")
// return
// }

// ia := api.ImageAlias{
// Name: alias,
// }

// imageAliases = append(imageAliases, ia)
// }
// image.Aliases = imageAliases

op, err := server.CreateImage(image, createArgs)
if err != nil {
resp.Diagnostics.AddError(fmt.Sprintf("Failed to create image from file %q", dataPath), err.Error())
return
}

// Wait for image create operation to finish.
err = op.Wait()
if err != nil {
resp.Diagnostics.AddError(fmt.Sprintf("Failed to create image from file %q", dataPath), err.Error())
return
}

fingerprint, ok := op.Get().Metadata["fingerprint"].(string)
if !ok {
resp.Diagnostics.AddError("Failed to get fingerprint of created image", "no fingerprint returned in metadata")
return
}
imageID := createImageResourceID(remote, fingerprint)
plan.ResourceID = types.StringValue(imageID)

plan.CopiedAliases = basetypes.NewSetNull(basetypes.StringType{})

// Create new aliases.
for _, alias := range aliases {
aliasPost := api.ImageAliasesPost{}
aliasPost.Name = alias
aliasPost.Target = fingerprint
err := server.CreateImageAlias(aliasPost)
if err != nil {
resp.Diagnostics.AddError(fmt.Sprintf("Failed to create alias: %s: ", alias), err.Error())
return
}
}

diags = r.SyncState(ctx, &resp.State, server, *plan)
resp.Diagnostics.Append(diags...)
}

func (r ImageResource) createImageFromSourceImage(ctx context.Context, resp *resource.CreateResponse, plan *ImageModel) {
var sourceImageModel SourceImageModel

Expand Down Expand Up @@ -728,3 +909,38 @@ func splitImageResourceID(id string) (string, string) {
pieces := strings.SplitN(id, ":", 2)
return pieces[0], pieces[1]
}

func exactlyOne(in ...bool) bool {
var count int
for _, b := range in {
if b {
count++
}
}
return count == 1
}

func packImageDir(path string) (string, error) {
// Quick checks.
if os.Geteuid() == -1 {
return "", fmt.Errorf("directory import is not available on this platform")
}
if os.Geteuid() != 0 {
return "", fmt.Errorf("must run as root to import from directory")
}

outFile, err := os.CreateTemp("", "incus_image_")
if err != nil {
return "", err
}

defer func() { _ = outFile.Close() }()

outFileName := outFile.Name()
_, err = subprocess.RunCommand("tar", "-C", path, "--numeric-owner", "--restrict", "--force-local", "--xattrs", "-cJf", outFileName, "rootfs", "templates", "metadata.yaml")
if err != nil {
return "", err
}

return outFileName, outFile.Close()
}
11 changes: 11 additions & 0 deletions internal/utils/utils.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@ import (
"context"
"encoding/json"
"fmt"
"os"
"sort"
"strings"
"time"
Expand Down Expand Up @@ -111,3 +112,13 @@ func ToPrettyJSON(v any) string {
bytes, _ := json.MarshalIndent(v, "", " ")
return string(bytes)
}

// IsDir returns true if the given path is a directory.
func IsDir(name string) bool {
stat, err := os.Stat(name)
if err != nil {
return false
}

return stat.IsDir()
}

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