Marathon provider

This commit is contained in:
emile 2015-09-09 22:39:08 +02:00
parent 4a96f19221
commit 9a840d1904
5 changed files with 156 additions and 27 deletions

View file

@ -8,6 +8,15 @@ import (
"text/template"
"strings"
)
type DockerProvider struct {
Watch bool
Endpoint string
dockerClient *docker.Client
Filename string
Domain string
}
var DockerFuncMap = template.FuncMap{
"getBackend": func(container docker.Container) string {
for key, value := range container.Config.Labels {
@ -30,16 +39,12 @@ var DockerFuncMap = template.FuncMap{
},
"getHost": getHost,
}
type DockerProvider struct {
Watch bool
Endpoint string
dockerClient *docker.Client
Filename string
Domain string
}
func (provider *DockerProvider) Provide(configurationChan chan <- *Configuration) {
provider.dockerClient, _ = docker.NewClient(provider.Endpoint)
if client, err := docker.NewClient(provider.Endpoint); err != nil {
log.Fatalf("Failed to create a client for docker, error: %s", err)
} else {
provider.dockerClient = client
dockerEvents := make(chan *docker.APIEvents)
if (provider.Watch) {
provider.dockerClient.AddEventListener(dockerEvents)
@ -57,6 +62,7 @@ func (provider *DockerProvider) Provide(configurationChan chan <- *Configuration
configuration := provider.loadDockerConfig()
configurationChan <- configuration
}
}
func (provider *DockerProvider) loadDockerConfig() *Configuration {

100
marathon.go Normal file
View file

@ -0,0 +1,100 @@
package main
import (
"github.com/gambol99/go-marathon"
"log"
"github.com/leekchan/gtf"
"bytes"
"github.com/BurntSushi/toml"
"text/template"
"strings"
"strconv"
)
type MarathonProvider struct {
Watch bool
Endpoint string
marathonClient marathon.Marathon
Domain string
Filename string
}
var MarathonFuncMap = template.FuncMap{
"getPort": func(task marathon.Task) string {
for _, port := range task.Ports {
return strconv.Itoa(port)
}
return ""
},
"getHost": func(application marathon.Application) string {
for key, value := range application.Labels {
if (key == "træfik.host") {
return value
}
}
return strings.TrimPrefix(application.ID, "/")
},
"replace": func(s1 string, s2 string, s3 string) string {
return strings.Replace(s3, s1, s2, -1)
},
}
func (provider *MarathonProvider) Provide(configurationChan chan <- *Configuration) {
config := marathon.NewDefaultConfig()
config.URL = provider.Endpoint
if client, err := marathon.NewClient(config); err != nil {
log.Println("Failed to create a client for marathon, error: %s", err)
return
} else {
provider.marathonClient = client
configuration := provider.loadMarathonConfig()
configurationChan <- configuration
}
}
func (provider *MarathonProvider) loadMarathonConfig() *Configuration {
configuration := new(Configuration)
applications, err := provider.marathonClient.Applications(nil)
if (err != nil) {
log.Println("Failed to create a client for marathon, error: %s", err)
return nil
}
tasks, err := provider.marathonClient.AllTasks()
if (err != nil) {
log.Println("Failed to create a client for marathon, error: %s", err)
return nil
}
templateObjects := struct {
Applications []marathon.Application
Tasks []marathon.Task
Domain string
}{
applications.Apps,
tasks.Tasks,
provider.Domain,
}
gtf.Inject(MarathonFuncMap)
tmpl, err := template.New(provider.Filename).Funcs(MarathonFuncMap).ParseFiles(provider.Filename)
if err != nil {
log.Println("Error reading file:", err)
return nil
}
var buffer bytes.Buffer
err = tmpl.Execute(&buffer, templateObjects)
if err != nil {
log.Println("Error with docker template:", err)
return nil
}
if _, err := toml.Decode(buffer.String(), configuration); err != nil {
log.Println("Error creating marathon configuration:", err)
return nil
}
log.Println(buffer.String())
return configuration
}

12
marathon.tmpl Normal file
View file

@ -0,0 +1,12 @@
[backends]{{range .Tasks}}
[backends.backend{{.AppID | replace "/" "-"}}.servers.server-{{.ID | replace "." "-"}}]
url = "http://{{.Host}}:{{getPort .}}"
{{end}}
[routes]{{range .Applications}}
[routes.route{{.ID | replace "/" "-"}}]
backend = ".backend{{.ID | replace "/" "-"}}"
[routes.route-{{getHost .}}.rules.rule-host-{{getHost .}}]
category = "Host"
value = "{{getHost .}}.{{$.Domain}}"
{{end}}

View file

@ -23,6 +23,7 @@ type FileConfiguration struct {
Docker *DockerProvider
File *FileProvider
Web *WebProvider
Marathon *MarathonProvider
}
var srv *graceful.Server
@ -58,6 +59,10 @@ func main() {
providers = append(providers, configuration.Docker)
}
if (configuration.Marathon != nil) {
providers = append(providers, configuration.Marathon)
}
if (configuration.File != nil) {
if (len(configuration.File.Filename) == 0) {
// no filename, setting to global config file

View file

@ -1,16 +1,22 @@
port = ":8001"
[docker]
endpoint = "unix:///var/run/docker.sock"
#[docker]
#endpoint = "unix:///var/run/docker.sock"
#watch = true
#domain = "toto.fr"
#filename = "docker.tmpl"
[marathon]
endpoint = "http://127.0.0.1:8080"
watch = true
domain = "toto.fr"
filename = "docker.tmpl"
filename = "marathon.tmpl"
[web]
address = ":8010"
#[file]
#filename = "træfik.toml"
#filename = "rules.toml"
#watch = true
[backends]