package runconfig // import "github.com/docker/docker/runconfig"

 
 import (

 	"encoding/json"
 	"io"
 

 	"github.com/docker/docker/api/types/container"
 	networktypes "github.com/docker/docker/api/types/network"

 	"github.com/docker/docker/pkg/sysinfo"

 )
 

 // ContainerDecoder implements httputils.ContainerDecoder
 // calling DecodeContainerConfig.
 type ContainerDecoder struct{}
 
 // DecodeConfig makes ContainerDecoder to implement httputils.ContainerDecoder
 func (r ContainerDecoder) DecodeConfig(src io.Reader) (*container.Config, *container.HostConfig, *networktypes.NetworkingConfig, error) {

 	return decodeContainerConfig(src)

 }
 
 // DecodeHostConfig makes ContainerDecoder to implement httputils.ContainerDecoder
 func (r ContainerDecoder) DecodeHostConfig(src io.Reader) (*container.HostConfig, error) {

 	return decodeHostConfig(src)

 }
 

 // decodeContainerConfig decodes a json encoded config into a ContainerConfigWrapper

 // struct and returns both a Config and a HostConfig struct

 // Be aware this function is not checking whether the resulted structs are nil,
 // it's your business to do so

 func decodeContainerConfig(src io.Reader) (*container.Config, *container.HostConfig, *networktypes.NetworkingConfig, error) {

 	var w ContainerConfigWrapper

 
 	decoder := json.NewDecoder(src)

 	if err := decoder.Decode(&w); err != nil {

 		return nil, nil, nil, err

 	}

 	hc := w.getHostConfig()
 

 	// Perform platform-specific processing of Volumes and Binds.
 	if w.Config != nil && hc != nil {
 

 		// Initialize the volumes map if currently nil

 		if w.Config.Volumes == nil {
 			w.Config.Volumes = make(map[string]struct{})
 		}
 	}
 

 	// Certain parameters need daemon-side validation that cannot be done
 	// on the client, as only the daemon knows what is valid for the platform.

 	if err := validateNetMode(w.Config, hc); err != nil {

 		return nil, nil, nil, err

 	}
 

 	// Validate isolation

 	if err := validateIsolation(hc); err != nil {

 		return nil, nil, nil, err

 	}

 
 	// Validate QoS

 	if err := validateQoS(hc); err != nil {

 		return nil, nil, nil, err
 	}

 	// Validate Resources

 	if err := validateResources(hc, sysinfo.New(true)); err != nil {

 		return nil, nil, nil, err
 	}

 
 	// Validate Privileged
 	if err := validatePrivileged(hc); err != nil {
 		return nil, nil, nil, err
 	}
 

 	// Validate ReadonlyRootfs
 	if err := validateReadonlyRootfs(hc); err != nil {
 		return nil, nil, nil, err
 	}
 

 	return w.Config, hc, w.NetworkingConfig, nil

 }