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chore(images): simplifies ListImages service, server, and client to only list Docker images and not directly access containerd

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This commit is contained in:
Pasha Sviderski committed 2025-10-03 18:25:39 +10:00
1 parent f8bf6bccd3
commit cce81ecaad
10 files changed
+234 -327
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go.mod
+3 -3
View File
@@ -14,9 +14,6 @@ require (
github.com/charmbracelet/huh v0.6.0 github.com/charmbracelet/huh v0.6.0
github.com/charmbracelet/lipgloss v1.1.0 github.com/charmbracelet/lipgloss v1.1.0
github.com/compose-spec/compose-go/v2 v2.4.5 github.com/compose-spec/compose-go/v2 v2.4.5
github.com/containerd/containerd/v2 v2.1.1
github.com/containerd/errdefs v1.0.0
github.com/containerd/log v0.1.0
github.com/containerd/platforms v1.0.0-rc.1 github.com/containerd/platforms v1.0.0-rc.1
github.com/coreos/go-systemd v0.0.0-20191104093116-d3cd4ed1dbcf github.com/coreos/go-systemd v0.0.0-20191104093116-d3cd4ed1dbcf
github.com/deckarep/golang-set/v2 v2.8.0 github.com/deckarep/golang-set/v2 v2.8.0
@@ -105,9 +102,12 @@ require (
github.com/containerd/console v1.0.4 // indirect github.com/containerd/console v1.0.4 // indirect
github.com/containerd/containerd v1.7.24 // indirect github.com/containerd/containerd v1.7.24 // indirect
github.com/containerd/containerd/api v1.9.0 // indirect github.com/containerd/containerd/api v1.9.0 // indirect
github.com/containerd/containerd/v2 v2.1.1 // indirect
github.com/containerd/continuity v0.4.5 // indirect github.com/containerd/continuity v0.4.5 // indirect
github.com/containerd/errdefs v1.0.0 // indirect
github.com/containerd/errdefs/pkg v0.3.0 // indirect github.com/containerd/errdefs/pkg v0.3.0 // indirect
github.com/containerd/fifo v1.1.0 // indirect github.com/containerd/fifo v1.1.0 // indirect
github.com/containerd/log v0.1.0 // indirect
github.com/containerd/plugin v1.0.0 // indirect github.com/containerd/plugin v1.0.0 // indirect
github.com/containerd/stargz-snapshotter/estargz v0.16.3 // indirect github.com/containerd/stargz-snapshotter/estargz v0.16.3 // indirect
github.com/containerd/ttrpc v1.2.7 // indirect github.com/containerd/ttrpc v1.2.7 // indirect
internal/containerd/client.go
-39
View File
@@ -1,39 +0,0 @@
package containerd
import (
"fmt"
"time"
"github.com/containerd/containerd/v2/client"
)
// Client is a containerd client for image operations.
type Client struct {
Client *client.Client
}
// NewClient creates a new containerd client connected to the given socket path.
func NewClient(sockPath string) (*Client, error) {
if sockPath == "" {
return nil, fmt.Errorf("containerd socket path is required")
}
c, err := client.New(
sockPath,
client.WithDefaultNamespace("moby"),
client.WithTimeout(60*time.Second),
)
if err != nil {
return nil, err
}
return &Client{Client: c}, nil
}
// Close closes the containerd client connection.
func (c *Client) Close() error {
if c.Client != nil {
return c.Client.Close()
}
return nil
}
internal/machine/api/pb/docker.pb.go
+155 -170
View File
@@ -1084,13 +1084,10 @@ type MachineImages struct {
unknownFields protoimpl.UnknownFields unknownFields protoimpl.UnknownFields
Metadata *Metadata `protobuf:"bytes,1,opt,name=metadata,proto3" json:"metadata,omitempty"` Metadata *Metadata `protobuf:"bytes,1,opt,name=metadata,proto3" json:"metadata,omitempty"`
// JSON serialised []image.Summary for images from Docker internal image store. // JSON serialised []image.Summary.
// Empty if Docker uses the containerd image store. Images []byte `protobuf:"bytes,2,opt,name=images,proto3" json:"images,omitempty"`
DockerImages []byte `protobuf:"bytes,2,opt,name=docker_images,json=dockerImages,proto3" json:"docker_images,omitempty"`
// JSON serialised []image.Summary for images from containerd image store.
ContainerdImages []byte `protobuf:"bytes,3,opt,name=containerd_images,json=containerdImages,proto3" json:"containerd_images,omitempty"`
// True if Docker uses the containerd image store, false if it uses its internal image store. // True if Docker uses the containerd image store, false if it uses its internal image store.
DockerContainerdStore bool `protobuf:"varint,4,opt,name=docker_containerd_store,json=dockerContainerdStore,proto3" json:"docker_containerd_store,omitempty"` ContainerdStore bool `protobuf:"varint,3,opt,name=containerd_store,json=containerdStore,proto3" json:"containerd_store,omitempty"`
} }
func (x *MachineImages) Reset() { func (x *MachineImages) Reset() {
@@ -1132,23 +1129,16 @@ func (x *MachineImages) GetMetadata() *Metadata {
return nil return nil
} }
func (x *MachineImages) GetDockerImages() []byte { func (x *MachineImages) GetImages() []byte {
if x != nil { if x != nil {
return x.DockerImages return x.Images
} }
return nil return nil
} }
func (x *MachineImages) GetContainerdImages() []byte { func (x *MachineImages) GetContainerdStore() bool {
if x != nil { if x != nil {
return x.ContainerdImages return x.ContainerdStore
}
return nil
}
func (x *MachineImages) GetDockerContainerdStore() bool {
if x != nil {
return x.DockerContainerdStore
} }
return false return false
} }
@@ -1833,160 +1823,155 @@ var file_internal_machine_api_pb_docker_proto_rawDesc = []byte{
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} }
var ( var (
internal/machine/api/pb/docker.proto
+3 -6
View File
@@ -147,13 +147,10 @@ message ListImagesResponse {
message MachineImages { message MachineImages {
Metadata metadata = 1; Metadata metadata = 1;
// JSON serialised []image.Summary for images from Docker internal image store. // JSON serialised []image.Summary.
// Empty if Docker uses the containerd image store. bytes images = 2;
bytes docker_images = 2;
// JSON serialised []image.Summary for images from containerd image store.
bytes containerd_images = 3;
// True if Docker uses the containerd image store, false if it uses its internal image store. // True if Docker uses the containerd image store, false if it uses its internal image store.
bool docker_containerd_store = 4; bool containerd_store = 3;
} }
message CreateVolumeRequest { message CreateVolumeRequest {
internal/machine/docker/server.go
+43 -47
View File
@@ -379,6 +379,49 @@ func (s *Server) InspectRemoteImage(
}, nil }, nil
} }
// ListImages returns a list of all images matching the filter and indicates whether Docker is using the containerd
// image store.
func (s *Server) ListImages(ctx context.Context, req *pb.ListImagesRequest) (*pb.ListImagesResponse, error) {
var opts image.ListOptions
if len(req.Options) > 0 {
if err := json.Unmarshal(req.Options, &opts); err != nil {
return nil, status.Errorf(codes.InvalidArgument, "unmarshal options: %v", err)
}
// Handle filters separately because they implement custom JSON unmarshalling.
var raw map[string]json.RawMessage
if err := json.Unmarshal(req.Options, &raw); err != nil {
return nil, status.Errorf(codes.InvalidArgument, "unmarshal options to raw map: %v", err)
}
if filtersBytes, ok := raw["Filters"]; ok {
args, err := filters.FromJSON(string(filtersBytes))
if err != nil {
return nil, status.Errorf(codes.InvalidArgument, "unmarshal filters: %v", err)
}
opts.Filters = args
}
}
images, err := s.service.ListImages(ctx, opts)
if err != nil {
return nil, status.Errorf(codes.Internal, err.Error())
}
machineImages := pb.MachineImages{
ContainerdStore: images.ContainerdStore,
}
if len(images.Images) > 0 {
if machineImages.Images, err = json.Marshal(images.Images); err != nil {
return nil, status.Errorf(codes.Internal, "marshal Docker images: %v", err)
}
}
return &pb.ListImagesResponse{
Messages: []*pb.MachineImages{&machineImages},
}, nil
}
// CreateVolume creates a new volume with the given options. // CreateVolume creates a new volume with the given options.
func (s *Server) CreateVolume(ctx context.Context, req *pb.CreateVolumeRequest) (*pb.CreateVolumeResponse, error) { func (s *Server) CreateVolume(ctx context.Context, req *pb.CreateVolumeRequest) (*pb.CreateVolumeResponse, error) {
var opts volume.CreateOptions var opts volume.CreateOptions
@@ -447,53 +490,6 @@ func (s *Server) ListVolumes(ctx context.Context, req *pb.ListVolumesRequest) (*
}, nil }, nil
} }
// ListImages lists images present in the Docker and containerd image stores.
func (s *Server) ListImages(ctx context.Context, req *pb.ListImagesRequest) (*pb.ListImagesResponse, error) {
var opts image.ListOptions
if len(req.Options) > 0 {
if err := json.Unmarshal(req.Options, &opts); err != nil {
return nil, status.Errorf(codes.InvalidArgument, "unmarshal options: %v", err)
}
// Handle filters separately because they implement custom JSON unmarshalling.
var raw map[string]json.RawMessage
if err := json.Unmarshal(req.Options, &raw); err != nil {
return nil, status.Errorf(codes.InvalidArgument, "unmarshal options to raw map: %v", err)
}
if filtersBytes, ok := raw["Filters"]; ok {
args, err := filters.FromJSON(string(filtersBytes))
if err != nil {
return nil, status.Errorf(codes.InvalidArgument, "unmarshal filters: %v", err)
}
opts.Filters = args
}
}
images, err := s.service.ListImages(ctx, opts)
if err != nil {
return nil, status.Errorf(codes.Internal, err.Error())
}
machineImages := pb.MachineImages{
DockerContainerdStore: images.DockerContainerdStore,
}
if len(images.DockerImages) > 0 {
if machineImages.DockerImages, err = json.Marshal(images.DockerImages); err != nil {
return nil, status.Errorf(codes.Internal, "marshal Docker images: %v", err)
}
}
if len(images.ContainerdImages) > 0 {
if machineImages.ContainerdImages, err = json.Marshal(images.ContainerdImages); err != nil {
return nil, status.Errorf(codes.Internal, "marshal containerd images: %v", err)
}
}
return &pb.ListImagesResponse{
Messages: []*pb.MachineImages{&machineImages},
}, nil
}
// RemoveVolume removes a volume with the given ID. // RemoveVolume removes a volume with the given ID.
func (s *Server) RemoveVolume(ctx context.Context, req *pb.RemoveVolumeRequest) (*emptypb.Empty, error) { func (s *Server) RemoveVolume(ctx context.Context, req *pb.RemoveVolumeRequest) (*emptypb.Empty, error) {
if err := s.client.VolumeRemove(ctx, req.Id, req.Force); err != nil { if err := s.client.VolumeRemove(ctx, req.Id, req.Force); err != nil {
internal/machine/docker/service.go
+17 -35
View File
@@ -14,7 +14,6 @@ import (
"github.com/docker/docker/api/types/image" "github.com/docker/docker/api/types/image"
"github.com/docker/docker/client" "github.com/docker/docker/client"
"github.com/jmoiron/sqlx" "github.com/jmoiron/sqlx"
"github.com/psviderski/uncloud/internal/containerd"
"github.com/psviderski/uncloud/pkg/api" "github.com/psviderski/uncloud/pkg/api"
"google.golang.org/grpc/codes" "google.golang.org/grpc/codes"
"google.golang.org/grpc/status" "google.golang.org/grpc/status"
@@ -25,18 +24,15 @@ import (
type Service struct { type Service struct {
// Client is a Docker client for managing Docker resources. // Client is a Docker client for managing Docker resources.
Client *client.Client Client *client.Client
// containerd is a containerd client for accessing containerd images.
containerd *containerd.Client
// db is a connection to the machine database. // db is a connection to the machine database.
db *sqlx.DB db *sqlx.DB
} }
// NewService creates a new Docker service instance. // NewService creates a new Docker service instance.
func NewService(client *client.Client, containerdClient *containerd.Client, db *sqlx.DB) *Service { func NewService(client *client.Client, db *sqlx.DB) *Service {
return &Service{ return &Service{
Client: client, Client: client,
containerd: containerdClient, db: db,
db: db,
} }
} }
@@ -124,47 +120,33 @@ func (s *Service) IsContainerdImageStoreEnabled(ctx context.Context) (bool, erro
} }
type Images struct { type Images struct {
// DockerImages lists images from the Docker internal image store. // Images is a list of images present in the Docker image store (either internal or containerd).
// It may be empty if Docker uses the containerd image store. Images []image.Summary
DockerImages []image.Summary // ContainerdStore indicates whether Docker is using the containerd image store.
// ContainerdImages lists images from the containerd image store. ContainerdStore bool
ContainerdImages []image.Summary
// DockerContainerdStore indicates whether Docker is using the containerd image store.
DockerContainerdStore bool
} }
// ListImages lists images present in the Docker and containerd image stores. // ListImages lists Docker images with the given options and indicates whether Docker is using the containerd
// If Docker uses the containerd image store, only images from containerd are listed, as the internal Docker image // image store. It always includes image manifests in the response if the store is containerd.
// store is not accessible in this case. Otherwise, images from both stores are listed.
func (s *Service) ListImages(ctx context.Context, opts image.ListOptions) (Images, error) { func (s *Service) ListImages(ctx context.Context, opts image.ListOptions) (Images, error) {
var images Images var imagesResp Images
// Always include the image manifests in the response. // Always include the image manifests in the response.
opts.Manifests = true opts.Manifests = true
// List images from Docker. images, err := s.Client.ImageList(ctx, opts)
dockerImages, err := s.Client.ImageList(ctx, opts)
if err != nil { if err != nil {
return images, status.Errorf(codes.Internal, "list Docker images: %v", err) return imagesResp, status.Errorf(codes.Internal, "list images: %v", err)
} }
isContainerdStore, err := s.IsContainerdImageStoreEnabled(ctx) isContainerdStore, err := s.IsContainerdImageStoreEnabled(ctx)
if err != nil { if err != nil {
return images, status.Errorf(codes.Internal, "check if Docker uses containerd image store: %v", err) return imagesResp, status.Errorf(codes.Internal, "check if Docker uses containerd image store: %v", err)
} }
if isContainerdStore { imagesResp = Images{
// Docker uses the containerd image store, hence the images listed from Docker are just references to images Images: images,
// in containerd. The internal Docker image store is not accessible in this case. ContainerdStore: isContainerdStore,
images = Images{
ContainerdImages: dockerImages,
DockerContainerdStore: true,
}
} else {
images = Images{
DockerImages: dockerImages,
// TODO: List images from containerd directly. ContainerdImages: containerdImages,
}
} }
return images, nil return imagesResp, nil
} }
internal/machine/machine.go
+1 -10
View File
@@ -17,7 +17,6 @@ import (
"github.com/docker/docker/client" "github.com/docker/docker/client"
"github.com/docker/go-connections/sockets" "github.com/docker/go-connections/sockets"
"github.com/psviderski/uncloud/internal/containerd"
"github.com/psviderski/uncloud/internal/corrosion" "github.com/psviderski/uncloud/internal/corrosion"
"github.com/psviderski/uncloud/internal/docker" "github.com/psviderski/uncloud/internal/docker"
"github.com/psviderski/uncloud/internal/fs" "github.com/psviderski/uncloud/internal/fs"
@@ -255,15 +254,7 @@ func NewMachine(config *Config) (*Machine, error) {
if err != nil { if err != nil {
return nil, fmt.Errorf("init machine database: %w", err) return nil, fmt.Errorf("init machine database: %w", err)
} }
dockerService := machinedocker.NewService(config.DockerClient, db)
if config.ContainerdSockPath == "" {
return nil, errors.New("containerd socket path must be configured")
}
containerdClient, err := containerd.NewClient(config.ContainerdSockPath)
if err != nil {
return nil, fmt.Errorf("create containerd client: %w", err)
}
dockerService := machinedocker.NewService(config.DockerClient, containerdClient, db)
// Init a local gRPC proxy server that proxies requests to the local or remote machine API servers. // Init a local gRPC proxy server that proxies requests to the local or remote machine API servers.
proxyDirector := apiproxy.NewDirector(config.MachineSockPath, constants.MachineAPIPort) proxyDirector := apiproxy.NewDirector(config.MachineSockPath, constants.MachineAPIPort)
pkg/api/image.go
+5 -5
View File
@@ -16,11 +16,11 @@ type MachineImage struct {
// MachineImages represents images present on a particular machine. // MachineImages represents images present on a particular machine.
type MachineImages struct { type MachineImages struct {
Metadata *pb.Metadata Metadata *pb.Metadata
// DockerImages is a list of images present in the Docker internal image store. // Images is a list of images present on the machine.
// It may be empty if Docker uses the containerd image store directly (containerd-snapshotter feature). Images []image.Summary
DockerImages []image.Summary // ContainerdStore indicates whether Docker on the machine uses the containerd image store
// ContainerdImages is a list of images present in the containerd image store. // (containerd-snapshotter feature).
ContainerdImages []image.Summary ContainerdStore bool
} }
// ImageFilter defines criteria to filter images in ListImages. // ImageFilter defines criteria to filter images in ListImages.
pkg/client/image.go
+5 -10
View File
@@ -42,7 +42,8 @@ func (cli *Client) InspectRemoteImage(ctx context.Context, id string) ([]api.Mac
return cli.Docker.InspectRemoteImage(ctx, id) return cli.Docker.InspectRemoteImage(ctx, id)
} }
// ListImages returns a list of images in Docker and containerd on specified machines in the cluster. // ListImages returns a list of images on specified machines in the cluster. If no machines are specified in the filter,
// it lists images on all machines.
func (cli *Client) ListImages(ctx context.Context, filter api.ImageFilter) ([]api.MachineImages, error) { func (cli *Client) ListImages(ctx context.Context, filter api.ImageFilter) ([]api.MachineImages, error) {
// Broadcast the image list request to the specified machines or all machines if none specified. // Broadcast the image list request to the specified machines or all machines if none specified.
listCtx, machines, err := api.ProxyMachinesContext(ctx, cli, filter.Machines) listCtx, machines, err := api.ProxyMachinesContext(ctx, cli, filter.Machines)
@@ -75,15 +76,9 @@ func (cli *Client) ListImages(ctx context.Context, filter api.ImageFilter) ([]ap
} }
} }
if len(msg.DockerImages) > 0 { if len(msg.Images) > 0 {
if err = json.Unmarshal(msg.DockerImages, &machineImages[i].DockerImages); err != nil { if err = json.Unmarshal(msg.Images, &machineImages[i].Images); err != nil {
return nil, fmt.Errorf("unmarshal Docker images: %w", err) return nil, fmt.Errorf("unmarshal images: %w", err)
}
}
if len(msg.ContainerdImages) > 0 {
if err = json.Unmarshal(msg.ContainerdImages, &machineImages[i].ContainerdImages); err != nil {
return nil, fmt.Errorf("unmarshal containerd images: %w", err)
} }
} }
} }
test/e2e/service_test.go
+2 -2
View File
@@ -1240,7 +1240,7 @@ myapp.example.com {
// Checking only DockerImages because the machines in ucind cluster don't use the containerd image store. // Checking only DockerImages because the machines in ucind cluster don't use the containerd image store.
if !machinesWithContainers.Contains(mi.Metadata.Machine) { if !machinesWithContainers.Contains(mi.Metadata.Machine) {
// This is the machine without service containers, it should not have the unique image. // This is the machine without service containers, it should not have the unique image.
for _, img := range mi.DockerImages { for _, img := range mi.Images {
assert.NotContains(t, img.RepoTags, uniqueImage) assert.NotContains(t, img.RepoTags, uniqueImage)
} }
continue continue
@@ -1248,7 +1248,7 @@ myapp.example.com {
// Check if the unique image is present on the machine where a service container is running. // Check if the unique image is present on the machine where a service container is running.
hasImage := false hasImage := false
for _, img := range mi.DockerImages { for _, img := range mi.Images {
if slices.Contains(img.RepoTags, uniqueImage) { if slices.Contains(img.RepoTags, uniqueImage) {
hasImage = true hasImage = true
break break