runconfig/config_unix.go

   1 // +build !windows
   2
   3 package runconfig
   4
   5 import (
   6         "github.com/docker/docker/api/types/container"
   7         networktypes "github.com/docker/docker/api/types/network"
   8 )
   9
  10 // ContainerConfigWrapper is a Config wrapper that holds the container Config (portable)
  11 // and the corresponding HostConfig (non-portable).
  12 type ContainerConfigWrapper struct {
  13         *container.Config
  14         InnerHostConfig       *container.HostConfig          `json:"HostConfig,omitempty"`
  15         Cpuset                string                         `json:",omitempty"` // Deprecated. Exported for backwards compatibility.
  16         NetworkingConfig      *networktypes.NetworkingConfig `json:"NetworkingConfig,omitempty"`
  17         *container.HostConfig                                // Deprecated. Exported to read attributes from json that are not in the inner host config structure.
  18 }
  19
  20 // getHostConfig gets the HostConfig of the Config.
  21 // It's mostly there to handle Deprecated fields of the ContainerConfigWrapper
  22 func (w *ContainerConfigWrapper) getHostConfig() *container.HostConfig {
  23         hc := w.HostConfig
  24
  25         if hc == nil && w.InnerHostConfig != nil {
  26                 hc = w.InnerHostConfig
  27         } else if w.InnerHostConfig != nil {
  28                 if hc.Memory != 0 && w.InnerHostConfig.Memory == 0 {
  29                         w.InnerHostConfig.Memory = hc.Memory
  30                 }
  31                 if hc.MemorySwap != 0 && w.InnerHostConfig.MemorySwap == 0 {
  32                         w.InnerHostConfig.MemorySwap = hc.MemorySwap
  33                 }
  34                 if hc.CPUShares != 0 && w.InnerHostConfig.CPUShares == 0 {
  35                         w.InnerHostConfig.CPUShares = hc.CPUShares
  36                 }
  37                 if hc.CpusetCpus != "" && w.InnerHostConfig.CpusetCpus == "" {
  38                         w.InnerHostConfig.CpusetCpus = hc.CpusetCpus
  39                 }
  40
  41                 if hc.VolumeDriver != "" && w.InnerHostConfig.VolumeDriver == "" {
  42                         w.InnerHostConfig.VolumeDriver = hc.VolumeDriver
  43                 }
  44
  45                 hc = w.InnerHostConfig
  46         }
  47
  48         if hc != nil {
  49                 if w.Cpuset != "" && hc.CpusetCpus == "" {
  50                         hc.CpusetCpus = w.Cpuset
  51                 }
  52         }
  53
  54         // Make sure NetworkMode has an acceptable value. We do this to ensure
  55         // backwards compatible API behavior.
  56         SetDefaultNetModeIfBlank(hc)
  57
  58         return hc
  59 }