homelab/traefik
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Adds traefik.frontend. rule and value labels in Docker and Marathon. Fixes #64. Fixes #73

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This commit is contained in:
emile 2015-10-23 09:49:19 +02:00
parent 5dea2e7902
commit d671cc3821
6 changed files with 157 additions and 95 deletions
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84
docker.go
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@ -73,18 +73,14 @@ func (provider *DockerProvider) Provide(configurationChan chan<- configMessage)
func (provider *DockerProvider) loadDockerConfig(dockerClient *docker.Client) *Configuration {
var DockerFuncMap = template.FuncMap{
"getBackend": func(container docker.Container) string {
for key, value := range container.Config.Labels {
if key == "traefik.backend" {
return value
}
if label, err := provider.getLabel(container, "traefik.backend"); err == nil {
return label
}
return getHost(container)
return provider.getEscapedName(container.Name)
},
"getPort": func(container docker.Container) string {
for key, value := range container.Config.Labels {
if key == "traefik.port" {
return value
}
if label, err := provider.getLabel(container, "traefik.port"); err == nil {
return label
}
for key := range container.NetworkSettings.Ports {
return key.Port()
@ -92,30 +88,33 @@ func (provider *DockerProvider) loadDockerConfig(dockerClient *docker.Client) *C
return ""
},
"getWeight": func(container docker.Container) string {
for key, value := range container.Config.Labels {
if key == "traefik.weight" {
return value
}
if label, err := provider.getLabel(container, "traefik.weight"); err == nil {
return label
}
return "0"
},
"getDomain": func(container docker.Container) string {
for key, value := range container.Config.Labels {
if key == "traefik.domain" {
return value
}
if label, err := provider.getLabel(container, "traefik.domain"); err == nil {
return label
}
return provider.Domain
},
"getProtocole": func(container docker.Container) string {
if label, err := provider.getLabel(container, "traefik.protocole"); err == nil {
return label
}
return "http"
},
"getFrontendValue": provider.GetFrontendValue,
"getFrontendRule": provider.GetFrontendRule,
"replace": func(s1 string, s2 string, s3 string) string {
return strings.Replace(s3, s1, s2, -1)
},
"getHost": getHost,
}
configuration := new(Configuration)
containerList, _ := dockerClient.ListContainers(docker.ListContainersOptions{})
containersInspected := []docker.Container{}
hosts := map[string][]docker.Container{}
frontends := map[string][]docker.Container{}
// get inspect containers
for _, container := range containerList {
@ -138,20 +137,28 @@ func (provider *DockerProvider) loadDockerConfig(dockerClient *docker.Client) *C
log.Debugf("Filtering disabled container %s", container.Name)
return false
}
_, errRule := provider.getLabel(container, "traefik.frontend.rule")
_, errValue := provider.getLabel(container, "traefik.frontend.value")
if errRule != nil && errValue == nil || errRule == nil && errValue != nil {
log.Debugf("Filtering bad labeled container %s", container.Name)
return false
}
return true
}, containersInspected).([]docker.Container)
for _, container := range filteredContainers {
hosts[getHost(container)] = append(hosts[getHost(container)], container)
frontends[provider.getFrontendName(container)] = append(frontends[provider.getFrontendName(container)], container)
}
templateObjects := struct {
Containers []docker.Container
Hosts map[string][]docker.Container
Frontends map[string][]docker.Container
Domain string
}{
filteredContainers,
hosts,
frontends,
provider.Domain,
}
tmpl := template.New(provider.Filename).Funcs(DockerFuncMap)
@ -181,17 +188,40 @@ func (provider *DockerProvider) loadDockerConfig(dockerClient *docker.Client) *C
}
if _, err := toml.Decode(buffer.String(), configuration); err != nil {
log.Error("Error creating docker configuration", err)
log.Error("Error creating docker configuration ", err)
return nil
}
return configuration
}
func getHost(container docker.Container) string {
func (provider *DockerProvider) getFrontendName(container docker.Container) string {
// Replace '.' with '-' in quoted keys because of this issue https://github.com/BurntSushi/toml/issues/78
return strings.Replace(provider.GetFrontendRule(container)+"-"+provider.GetFrontendValue(container), ".", "-", -1)
}
func (provider *DockerProvider) getEscapedName(name string) string {
return strings.Replace(name, "/", "", -1)
}
func (provider *DockerProvider) getLabel(container docker.Container, label string) (string, error) {
for key, value := range container.Config.Labels {
if key == "traefik.host" {
return value
if key == label {
return value, nil
}
}
return strings.Replace(strings.Replace(container.Name, "/", "", -1), ".", "-", -1)
return "", errors.New("Label not found:" + label)
}
func (provider *DockerProvider) GetFrontendValue(container docker.Container) string {
if label, err := provider.getLabel(container, "traefik.frontend.value"); err == nil {
return label
}
return provider.getEscapedName(container.Name) + "." + provider.Domain
}
func (provider *DockerProvider) GetFrontendRule(container docker.Container) string {
if label, err := provider.getLabel(container, "traefik.frontend.rule"); err == nil {
return label
}
return "Host"
}