| 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 { |
| GetSysInfo func() *sysinfo.SysInfo |
| } |
| |
| // DecodeConfig makes ContainerDecoder to implement httputils.ContainerDecoder |
| func (r ContainerDecoder) DecodeConfig(src io.Reader) (*container.Config, *container.HostConfig, *networktypes.NetworkingConfig, error) { |
| var si *sysinfo.SysInfo |
| if r.GetSysInfo != nil { |
| si = r.GetSysInfo() |
| } else { |
| si = sysinfo.New() |
| } |
| |
| return decodeContainerConfig(src, si) |
| } |
| |
| // 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, and performs some |
| // validation. Certain parameters need daemon-side validation that cannot be done |
| // on the client, as only the daemon knows what is valid for the platform. |
| // 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, si *sysinfo.SysInfo) (*container.Config, *container.HostConfig, *networktypes.NetworkingConfig, error) { |
| var w ContainerConfigWrapper |
| if err := loadJSON(src, &w); err != nil { |
| return nil, nil, nil, err |
| } |
| |
| hc := w.getHostConfig() |
| if hc == nil { |
| // We may not be passed a host config, such as in the case of docker commit |
| return w.Config, hc, w.NetworkingConfig, nil |
| } |
| if err := validateNetMode(w.Config, hc); err != nil { |
| return nil, nil, nil, err |
| } |
| if err := validateIsolation(hc); err != nil { |
| return nil, nil, nil, err |
| } |
| if err := validateQoS(hc); err != nil { |
| return nil, nil, nil, err |
| } |
| if err := validateResources(hc, si); err != nil { |
| return nil, nil, nil, err |
| } |
| if err := validatePrivileged(hc); err != nil { |
| return nil, nil, nil, err |
| } |
| if err := validateReadonlyRootfs(hc); err != nil { |
| return nil, nil, nil, err |
| } |
| if w.Config != nil && w.Config.Volumes == nil { |
| w.Config.Volumes = make(map[string]struct{}) |
| } |
| return w.Config, hc, w.NetworkingConfig, nil |
| } |
| |
| // loadJSON is similar to api/server/httputils.ReadJSON() |
| func loadJSON(src io.Reader, out interface{}) error { |
| dec := json.NewDecoder(src) |
| if err := dec.Decode(&out); err != nil { |
| if err == io.EOF { |
| return validationError("invalid JSON: got EOF while reading request body") |
| } |
| return validationError("invalid JSON: " + err.Error()) |
| } |
| if dec.More() { |
| return validationError("unexpected content after JSON") |
| } |
| return nil |
| } |