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|
package runconfig
import (
"github.com/dotcloud/docker/nat"
"github.com/dotcloud/docker/utils"
"strings"
)
func Merge(userConf, imageConf *Config) error {
if userConf.User == "" {
userConf.User = imageConf.User
}
if userConf.Memory == 0 {
userConf.Memory = imageConf.Memory
}
if userConf.MemorySwap == 0 {
userConf.MemorySwap = imageConf.MemorySwap
}
if userConf.CpuShares == 0 {
userConf.CpuShares = imageConf.CpuShares
}
if userConf.ExposedPorts == nil || len(userConf.ExposedPorts) == 0 {
userConf.ExposedPorts = imageConf.ExposedPorts
} else if imageConf.ExposedPorts != nil {
if userConf.ExposedPorts == nil {
userConf.ExposedPorts = make(nat.PortSet)
}
for port := range imageConf.ExposedPorts {
if _, exists := userConf.ExposedPorts[port]; !exists {
userConf.ExposedPorts[port] = struct{}{}
}
}
}
if userConf.PortSpecs != nil && len(userConf.PortSpecs) > 0 {
if userConf.ExposedPorts == nil {
userConf.ExposedPorts = make(nat.PortSet)
}
ports, _, err := nat.ParsePortSpecs(userConf.PortSpecs)
if err != nil {
return err
}
for port := range ports {
if _, exists := userConf.ExposedPorts[port]; !exists {
userConf.ExposedPorts[port] = struct{}{}
}
}
userConf.PortSpecs = nil
}
if imageConf.PortSpecs != nil && len(imageConf.PortSpecs) > 0 {
// FIXME: I think we can safely remove this. Leaving it for now for the sake of reverse-compat paranoia.
utils.Debugf("Migrating image port specs to containter: %s", strings.Join(imageConf.PortSpecs, ", "))
if userConf.ExposedPorts == nil {
userConf.ExposedPorts = make(nat.PortSet)
}
ports, _, err := nat.ParsePortSpecs(imageConf.PortSpecs)
if err != nil {
return err
}
for port := range ports {
if _, exists := userConf.ExposedPorts[port]; !exists {
userConf.ExposedPorts[port] = struct{}{}
}
}
}
if !userConf.Tty {
userConf.Tty = imageConf.Tty
}
if !userConf.OpenStdin {
userConf.OpenStdin = imageConf.OpenStdin
}
if !userConf.StdinOnce {
userConf.StdinOnce = imageConf.StdinOnce
}
if userConf.Env == nil || len(userConf.Env) == 0 {
userConf.Env = imageConf.Env
} else {
for _, imageEnv := range imageConf.Env {
found := false
imageEnvKey := strings.Split(imageEnv, "=")[0]
for _, userEnv := range userConf.Env {
userEnvKey := strings.Split(userEnv, "=")[0]
if imageEnvKey == userEnvKey {
found = true
}
}
if !found {
userConf.Env = append(userConf.Env, imageEnv)
}
}
}
if userConf.Cmd == nil || len(userConf.Cmd) == 0 {
userConf.Cmd = imageConf.Cmd
}
if userConf.Entrypoint == nil || len(userConf.Entrypoint) == 0 {
userConf.Entrypoint = imageConf.Entrypoint
}
if userConf.WorkingDir == "" {
userConf.WorkingDir = imageConf.WorkingDir
}
if userConf.Volumes == nil || len(userConf.Volumes) == 0 {
userConf.Volumes = imageConf.Volumes
} else {
for k, v := range imageConf.Volumes {
userConf.Volumes[k] = v
}
}
return nil
}
|
