Expose old config field for api < 1.19

Signed-off-by: Antonio Murdaca <me@runcom.ninja>

api/server/server.go

@@ -1141,6 +1141,14 @@ func (s *Server) getContainersByName(version version.Version, w http.ResponseWri
 		return fmt.Errorf("Missing parameter")
 	}
 
+	if version.LessThan("1.19") {
+		containerJSONRaw, err := s.daemon.ContainerInspectRaw(vars["name"])
+		if err != nil {
+			return err
+		}
+		return writeJSON(w, http.StatusOK, containerJSONRaw)
+	}
+
 	containerJSON, err := s.daemon.ContainerInspect(vars["name"])
 	if err != nil {
 		return err

api/types/types.go

@@ -195,12 +195,11 @@ type ContainerState struct {
 }
 
 // GET "/containers/{name:.*}/json"
-type ContainerJSON struct {
+type ContainerJSONBase struct {
 	Id              string
 	Created         time.Time
 	Path            string
 	Args            []string
-	Config          *runconfig.Config
 	State           *ContainerState
 	Image           string
 	NetworkSettings *network.Settings
@@ -220,3 +219,24 @@ type ContainerJSON struct {
 	ExecIDs         []string
 	HostConfig      *runconfig.HostConfig
 }
+
+type ContainerJSON struct {
+	*ContainerJSONBase
+	Config *runconfig.Config
+}
+
+// backcompatibility struct along with ContainerConfig
+type ContainerJSONRaw struct {
+	*ContainerJSONBase
+	Config *ContainerConfig
+}
+
+type ContainerConfig struct {
+	*runconfig.Config
+
+	// backward compatibility, they now live in HostConfig
+	Memory     int64
+	MemorySwap int64
+	CpuShares  int64
+	Cpuset     string
+}

daemon/inspect.go

@@ -15,6 +15,40 @@ func (daemon *Daemon) ContainerInspect(name string) (*types.ContainerJSON, error
 	container.Lock()
 	defer container.Unlock()
 
+	base, err := daemon.getInspectData(container)
+	if err != nil {
+		return nil, err
+	}
+
+	return &types.ContainerJSON{base, container.Config}, nil
+}
+
+func (daemon *Daemon) ContainerInspectRaw(name string) (*types.ContainerJSONRaw, error) {
+	container, err := daemon.Get(name)
+	if err != nil {
+		return nil, err
+	}
+
+	container.Lock()
+	defer container.Unlock()
+
+	base, err := daemon.getInspectData(container)
+	if err != nil {
+		return nil, err
+	}
+
+	config := &types.ContainerConfig{
+		container.Config,
+		container.hostConfig.Memory,
+		container.hostConfig.MemorySwap,
+		container.hostConfig.CpuShares,
+		container.hostConfig.CpusetCpus,
+	}
+
+	return &types.ContainerJSONRaw{base, config}, nil
+}
+
+func (daemon *Daemon) getInspectData(container *Container) (*types.ContainerJSONBase, error) {
 	// make a copy to play with
 	hostConfig := *container.hostConfig
 
@@ -50,12 +84,11 @@ func (daemon *Daemon) ContainerInspect(name string) (*types.ContainerJSON, error
 		volumesRW[m.Destination] = m.RW
 	}
 
-	contJSON := &types.ContainerJSON{
+	contJSONBase := &types.ContainerJSONBase{
 		Id:              container.ID,
 		Created:         container.Created,
 		Path:            container.Path,
 		Args:            container.Args,
-		Config:          container.Config,
 		State:           containerState,
 		Image:           container.ImageID,
 		NetworkSettings: container.NetworkSettings,
@@ -76,7 +109,7 @@ func (daemon *Daemon) ContainerInspect(name string) (*types.ContainerJSON, error
 		HostConfig:      &hostConfig,
 	}
 
-	return contJSON, nil
+	return contJSONBase, nil
 }
 
 func (daemon *Daemon) ContainerExecInspect(id string) (*execConfig, error) {