func getImageTags(templateRepos []string, serviceRepos []string, tags []string) (map[string][]string, error) {
imagemap := make(map[string][]string)
// find all the template repos
for _, repo := range templateRepos {
image, err := docker.FindImage(repo, false)
if err == docker.ErrNoSuchImage {
glog.Warningf("Could not find template image %s", repo)
continue
} else if err != nil {
glog.Errorf("Could not look up repo %s: %s", repo, err)
return nil, err
}
if image.ID.Tag == DockerLatest {
image.ID.Tag = ""
}
images := imagemap[image.UUID]
imagemap[image.UUID] = append(images, image.ID.String())
}
// find all the service repos
for _, repo := range serviceRepos {
image, err := docker.FindImage(repo, false)
if err != nil {
glog.Errorf("Could not look up repo %s: %s", repo, err)
return nil, err
}
if image.ID.Tag == DockerLatest {
image.ID.Tag = ""
}
images := imagemap[image.UUID]
imagemap[image.UUID] = append(images, image.ID.String())
for _, tag := range tags {
image, err := docker.FindImage(commons.JoinRepoTag(repo, tag), false)
if err == docker.ErrNoSuchImage {
continue
} else if err != nil {
glog.Errorf("Could not look up repo %s: %s", commons.JoinRepoTag(repo, tag), err)
return nil, err
}
images := imagemap[image.UUID]
imagemap[image.UUID] = append(images, image.ID.String())
}
}
return imagemap, nil
}
func (svc *IService) create() (*docker.Container, error) {
var config dockerclient.Config
cd := &docker.ContainerDefinition{
dockerclient.CreateContainerOptions{Name: svc.name(), Config: &config},
dockerclient.HostConfig{},
}
config.Image = commons.JoinRepoTag(svc.Repo, svc.Tag)
config.Cmd = []string{"/bin/sh", "-c", svc.Command()}
// NOTE: USE WITH CARE!
// Enabling host networking for an isvc may expose ports
// of the isvcs to access outside of the serviced host, potentially
// compromising security.
if svc.HostNetwork {
cd.NetworkMode = "host"
glog.Warningf("Host networking enabled for isvc %s", svc.Name)
}
// attach all exported ports
if svc.PortBindings != nil && len(svc.PortBindings) > 0 {
config.ExposedPorts = make(map[dockerclient.Port]struct{})
cd.PortBindings = make(map[dockerclient.Port][]dockerclient.PortBinding)
for _, binding := range svc.PortBindings {
port := dockerclient.Port(fmt.Sprintf("%d", binding.HostPort))
config.ExposedPorts[port] = struct{}{}
portBinding := dockerclient.PortBinding{
HostIp: getHostIp(binding),
HostPort: port.Port(),
}
cd.PortBindings[port] = append(cd.PortBindings[port], portBinding)
}
}
glog.V(1).Infof("Bindings for %s = %v", svc.Name, cd.PortBindings)
// copy any links to other isvcs
if svc.Links != nil && len(svc.Links) > 0 {
// To use a link, the source container must be instantiated already, so
// the service using a link can't be in the first start group.
//
// FIXME: Other sanity checks we could add - make sure that the source
// container is not in the same group or a later group
if svc.StartGroup == 0 {
glog.Fatalf("isvc %s can not use docker Links with StartGroup=0", svc.Name)
}
cd.Links = make([]string, len(svc.Links))
copy(cd.Links, svc.Links)
glog.V(1).Infof("Links for %s = %v", svc.Name, cd.Links)
}
// attach all exported volumes
config.Volumes = make(map[string]struct{})
cd.Binds = []string{}
// service-specific volumes
if svc.Volumes != nil && len(svc.Volumes) > 0 {
for src, dest := range svc.Volumes {
hostpath := svc.getResourcePath(src)
if exists, _ := isDir(hostpath); !exists {
if err := os.MkdirAll(hostpath, 0777); err != nil {
glog.Errorf("could not create %s on host: %s", hostpath, err)
return nil, err
}
}
cd.Binds = append(cd.Binds, fmt.Sprintf("%s:%s", hostpath, dest))
config.Volumes[dest] = struct{}{}
}
}
// global volumes
if isvcsVolumes != nil && len(isvcsVolumes) > 0 {
for src, dest := range isvcsVolumes {
if exists, _ := isDir(src); !exists {
glog.Warningf("Could not mount source %s: path does not exist", src)
continue
}
cd.Binds = append(cd.Binds, fmt.Sprintf("%s:%s", src, dest))
config.Volumes[dest] = struct{}{}
}
}
// attach environment variables
for key, val := range envPerService[svc.Name] {
config.Env = append(config.Env, fmt.Sprintf("%s=%s", key, val))
}
return docker.NewContainer(cd, false, 5*time.Second, nil, nil)
}