func (p ContainerWrap) LabelByKey(key string) (string, error) {
if val, ok := p.Labels[key]; ok {
return val, nil
}
logging.Debug("LabelByKey:: container: %s: key %q is not present", p.Name, key)
return "", nil
}
func processTemplates(cnf *config.Config) error {
apiURL := cnf.Host + cnf.Prefix
meta, err := metadata.NewClientAndWait(apiURL)
if err != nil {
return errors.Annotate(err, "get meta client")
}
logging.Info("connect rancher metadata url: %q", apiURL)
//expand template paths
logging.Debug("expand template paths")
for idx, set := range cnf.Sets {
if !path.IsAbs(set.TemplatePath) {
cnf.Sets[idx].TemplatePath = path.Join(DEFAULT_TEMPLATE_DIR, set.TemplatePath)
}
}
version := "init"
for {
newVersion, err := meta.GetVersion()
if err != nil {
return errors.Annotate(err, "get version")
}
if newVersion == version {
time.Sleep(5 * time.Second)
continue
}
version = newVersion
logging.Info("metadata changed - refresh config")
for _, set := range cnf.Sets {
scratch.Reset()
if err := processTemplateSet(meta, set); err != nil {
return errors.Annotate(err, "process template set")
}
}
time.Sleep(time.Duration(cnf.Repeat) * time.Second)
}
return nil
}
func (p ContainerWrap) PortInternal(idx int) (string, error) {
if len(p.Ports) == 0 {
return "", nil
}
if idx >= len(p.Ports) {
return "", errors.Errorf("PortInternal:: index %d out of range", idx)
}
part := p.Ports[idx]
if part == "" {
return part, nil
}
logging.Debug(part)
items := strings.Split(part, ":")
part = items[len(items)-1]
if strings.Contains(part, "/") {
part = strings.Split(part, "/")[0]
}
return part, nil
}