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moby--moby/runconfig/merge.go
David Mackey 3941623fbc trivial: typo cleanup
Signed-off-by: David Mackey <tdmackey@booleanhaiku.com>
2015-04-27 13:35:08 -07:00

108 lines
2.6 KiB
Go

package runconfig
import (
"strings"
"github.com/Sirupsen/logrus"
"github.com/docker/docker/nat"
)
func Merge(userConf, imageConf *Config) error {
if userConf.User == "" {
userConf.User = imageConf.User
}
if 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 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 len(imageConf.PortSpecs) > 0 {
// FIXME: I think we can safely remove this. Leaving it for now for the sake of reverse-compat paranoia.
logrus.Debugf("Migrating image port specs to container: %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 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.Labels == nil {
userConf.Labels = map[string]string{}
}
if imageConf.Labels != nil {
for l := range userConf.Labels {
imageConf.Labels[l] = userConf.Labels[l]
}
userConf.Labels = imageConf.Labels
}
if userConf.Entrypoint.Len() == 0 {
if userConf.Cmd.Len() == 0 {
userConf.Cmd = imageConf.Cmd
}
if userConf.Entrypoint == nil {
userConf.Entrypoint = imageConf.Entrypoint
}
}
if userConf.WorkingDir == "" {
userConf.WorkingDir = imageConf.WorkingDir
}
if len(userConf.Volumes) == 0 {
userConf.Volumes = imageConf.Volumes
} else {
for k, v := range imageConf.Volumes {
userConf.Volumes[k] = v
}
}
return nil
}