add mesos provider inspired by mesos-dns & marathon provider

README.md

@@ -13,7 +13,7 @@
 
 
 Træfɪk is a modern HTTP reverse proxy and load balancer made to deploy microservices with ease.
-It supports several backends ([Docker](https://www.docker.com/), [Swarm](https://docs.docker.com/swarm), [Mesos/Marathon](https://mesosphere.github.io/marathon/), [Kubernetes](http://kubernetes.io/), [Consul](https://www.consul.io/), [Etcd](https://coreos.com/etcd/), [Zookeeper](https://zookeeper.apache.org), [BoltDB](https://github.com/boltdb/bolt), Rest API, file...) to manage its configuration automatically and dynamically.
+It supports several backends ([Docker](https://www.docker.com/), [Swarm](https://docs.docker.com/swarm), [Mesos/Marathon](https://mesosphere.github.io/marathon/), [Mesos](https://github.com/apache/mesos), [Kubernetes](http://kubernetes.io/), [Consul](https://www.consul.io/), [Etcd](https://coreos.com/etcd/), [Zookeeper](https://zookeeper.apache.org), [BoltDB](https://github.com/boltdb/bolt), Rest API, file...) to manage its configuration automatically and dynamically.
 
 ## Overview
 

configuration.go

@@ -42,6 +42,7 @@ type GlobalConfiguration struct {
 	Zookeeper                 *provider.Zookepper     `description:"Enable Zookeeper backend"`
 	Boltdb                    *provider.BoltDb        `description:"Enable Boltdb backend"`
 	Kubernetes                *provider.Kubernetes    `description:"Enable Kubernetes backend"`
+	Mesos                     *provider.Mesos         `description:"Enable Mesos backend"`
 }
 
 // DefaultEntryPoints holds default entry points
@@ -277,6 +278,13 @@ func NewTraefikDefaultPointersConfiguration() *TraefikConfiguration {
 	defaultKubernetes.LabelSelector = ""
 	defaultKubernetes.Constraints = []types.Constraint{}
 
+	// default Mesos
+	var defaultMesos provider.Mesos
+	defaultMesos.Watch = true
+	defaultMesos.Endpoint = "http://127.0.0.1:5050"
+	defaultMesos.ExposedByDefault = true
+	defaultMesos.Constraints = []types.Constraint{}
+
 	defaultConfiguration := GlobalConfiguration{
 		Docker:        &defaultDocker,
 		File:          &defaultFile,
@@ -288,6 +296,7 @@ func NewTraefikDefaultPointersConfiguration() *TraefikConfiguration {
 		Zookeeper:     &defaultZookeeper,
 		Boltdb:        &defaultBoltDb,
 		Kubernetes:    &defaultKubernetes,
+		Mesos:         &defaultMesos,
 		Retry:         &Retry{},
 	}
 	return &TraefikConfiguration{

glide.lock

@@ -87,6 +87,12 @@ imports:
   version: a558128c87724cd7430060ef5aedf39f83937f55
 - name: github.com/go-check/check
   version: 4f90aeace3a26ad7021961c297b22c42160c7b25
+- name: github.com/gogo/protobuf
+  version: 8b3113fff1787050d4f5fcbf1173b857eec36566
+  subpackages:
+     - proto
+- name: github.com/golang/glog
+  version: fca8c8854093a154ff1eb580aae10276ad6b1b5f
 - name: github.com/google/go-querystring
   version: 9235644dd9e52eeae6fa48efd539fdc351a0af53
   subpackages:
@@ -104,6 +110,8 @@ imports:
   subpackages:
   - coordinate
   - serf
+- name: github.com/jarcoal/httpmock
+  version: 145b10d659265440f062c31ea15326166bae56ee
 - name: github.com/libkermit/docker
   version: 3b5eb2973efff7af33cfb65141deaf4ed25c6d02
 - name: github.com/libkermit/docker-check
@@ -114,6 +122,15 @@ imports:
   version: fd192d755b00c968d312d23f521eb0cdc6f66bd0
 - name: github.com/mattn/go-shellwords
   version: 525bedee691b5a8df547cb5cf9f86b7fb1883e24
+- name: github.com/mesos/mesos-go
+  version: 7064d8760d60f029f568b9295e6842612e89e347
+  subpackages:
+  - mesosproto
+  - mesos
+  - upid
+  - mesosutil
+  - detector
+  - detector/zoo
 - name: github.com/Microsoft/go-winio
   version: ce2922f643c8fd76b46cadc7f404a06282678b34
 - name: github.com/miekg/dns
@@ -134,6 +151,19 @@ imports:
   - difflib
 - name: github.com/ryanuber/go-glob
   version: 572520ed46dbddaed19ea3d9541bdd0494163693
+- name: github.com/mesosphere/mesos-dns
+  vcs: git
+  repo: https://github.com/saagie/mesos-dns.git
+  version: 618029acf9827913fdb9cc67fb6f44b681e60a37
+  subpackages:
+  - detect
+  - records
+  - records/state
+  - util
+  - logging
+  - errorutil
+  - models
+  - records/labels
 - name: github.com/samuel/go-zookeeper
   version: e64db453f3512cade908163702045e0f31137843
   subpackages:
@@ -151,6 +181,8 @@ imports:
   - assert
 - name: github.com/thoas/stats
   version: 69e3c072eec2df2df41afe6214f62eb940e4cd80
+- name: github.com/tv42/zbase32
+  version: 03389da7e0bf9844767f82690f4d68fc097a1306
 - name: github.com/unrolled/render
   version: 198ad4d8b8a4612176b804ca10555b222a086b40
 - name: github.com/vdemeester/docker-events

glide.yaml

@@ -82,3 +82,16 @@ import:
 - package: github.com/mattn/go-shellwords
 - package: github.com/vdemeester/shakers
 - package: github.com/ryanuber/go-glob
+- package: github.com/mesos/mesos-go
+  subpackages:
+  - mesosproto
+  - mesos
+  - upid
+  - mesosutil
+  - detector
+- package: github.com/jarcoal/httpmock
+- package: github.com/mesosphere/mesos-dns
+  vcs: git
+  repo: https://github.com/containous/mesos-dns.git
+  version: b47dc4c19f215e98da687b15b4c64e70f629bea5
+- package: github.com/tv42/zbase32

integration/fixtures/mesos/simple.toml

@@ -0,0 +1,9 @@
+defaultEntryPoints = ["http"]
+
+[entryPoints]
+  [entryPoints.http]
+  address = ":8000"
+
+logLevel = "DEBUG"
+
+[mesos]

integration/integration_test.go

@@ -32,6 +32,7 @@ func init() {
 	check.Suite(&EtcdSuite{})
 	check.Suite(&MarathonSuite{})
 	check.Suite(&ConstraintSuite{})
+	check.Suite(&MesosSuite{})
 }
 
 var traefikBinary = "../dist/traefik"

integration/mesos_test.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"net/http"
+	"os/exec"
+	"time"
+
+	"github.com/go-check/check"
+
+	checker "github.com/vdemeester/shakers"
+)
+
+// Mesos test suites (using libcompose)
+type MesosSuite struct{ BaseSuite }
+
+func (s *MesosSuite) SetUpSuite(c *check.C) {
+	s.createComposeProject(c, "mesos")
+}
+
+func (s *MesosSuite) TestSimpleConfiguration(c *check.C) {
+	cmd := exec.Command(traefikBinary, "--configFile=fixtures/mesos/simple.toml")
+	err := cmd.Start()
+	c.Assert(err, checker.IsNil)
+	defer cmd.Process.Kill()
+
+	time.Sleep(500 * time.Millisecond)
+	// TODO validate : run on 80
+	resp, err := http.Get("http://127.0.0.1:8000/")
+
+	// Expected a 404 as we did not configure anything
+	c.Assert(err, checker.IsNil)
+	c.Assert(resp.StatusCode, checker.Equals, 404)
+}

integration/resources/compose/mesos.yml

@@ -0,0 +1,34 @@
+zk:
+  image: bobrik/zookeeper
+  net: host
+  environment:
+    ZK_CONFIG: tickTime=2000,initLimit=10,syncLimit=5,maxClientCnxns=128,forceSync=no,clientPort=2181
+    ZK_ID: " 1"
+
+master:
+  image: mesosphere/mesos-master:0.28.1-2.0.20.ubuntu1404
+  net: host
+  environment:
+    MESOS_ZK: zk://127.0.0.1:2181/mesos
+    MESOS_HOSTNAME: 127.0.0.1
+    MESOS_IP: 127.0.0.1
+    MESOS_QUORUM: " 1"
+    MESOS_CLUSTER: docker-compose
+    MESOS_WORK_DIR: /var/lib/mesos
+
+slave:
+  image: mesosphere/mesos-slave:0.28.1-2.0.20.ubuntu1404
+  net: host
+  pid: host
+  privileged: true
+  environment:
+    MESOS_MASTER: zk://127.0.0.1:2181/mesos
+    MESOS_HOSTNAME: 127.0.0.1
+    MESOS_IP: 127.0.0.1
+    MESOS_CONTAINERIZERS: docker,mesos
+  volumes:
+    - /sys/fs/cgroup:/sys/fs/cgroup
+    - /usr/bin/docker:/usr/bin/docker:ro
+    - /usr/lib/x86_64-linux-gnu/libapparmor.so.1:/usr/lib/x86_64-linux-gnu/libapparmor.so.1:ro
+    - /var/run/docker.sock:/var/run/docker.sock
+    - /lib/x86_64-linux-gnu/libsystemd-journal.so.0:/lib/x86_64-linux-gnu/libsystemd-journal.so.0

provider/mesos.go

@@ -0,0 +1,444 @@
+package provider
+
+import (
+	"errors"
+	"strconv"
+	"strings"
+	"text/template"
+
+	"fmt"
+	"github.com/BurntSushi/ty/fun"
+	log "github.com/Sirupsen/logrus"
+	"github.com/cenkalti/backoff"
+	"github.com/containous/traefik/safe"
+	"github.com/containous/traefik/types"
+	"github.com/mesos/mesos-go/detector"
+	_ "github.com/mesos/mesos-go/detector/zoo" // Registers the ZK detector
+	"github.com/mesosphere/mesos-dns/detect"
+	"github.com/mesosphere/mesos-dns/logging"
+	"github.com/mesosphere/mesos-dns/records"
+	"github.com/mesosphere/mesos-dns/records/state"
+	"github.com/mesosphere/mesos-dns/util"
+	"sort"
+	"time"
+)
+
+//Mesos holds configuration of the mesos provider.
+type Mesos struct {
+	BaseProvider
+	Endpoint           string `description:"Mesos server endpoint. You can also specify multiple endpoint for Mesos"`
+	Domain             string `description:"Default domain used"`
+	ExposedByDefault   bool   `description:"Expose Mesos apps by default"`
+	GroupsAsSubDomains bool   `description:"Convert Mesos groups to subdomains"`
+	ZkDetectionTimeout int    `description:"ZkDetectionTimeout"`
+	RefreshSeconds     int    `description:"RefreshSeconds"`
+	IPSources          string `description:"IPSources"` // e.g. "host", "docker", "mesos", "rkt"
+	StateTimeoutSecond int    `description:"HTTP Timeout (in seconds)"`
+	Masters            []string
+}
+
+// Provide allows the provider to provide configurations to traefik
+// using the given configuration channel.
+func (provider *Mesos) Provide(configurationChan chan<- types.ConfigMessage, pool *safe.Pool, constraints []types.Constraint) error {
+	operation := func() error {
+
+		// initialize logging
+		logging.SetupLogs()
+
+		log.Debugf("%s", provider.IPSources)
+
+		var zk string
+		var masters []string
+
+		if strings.HasPrefix(provider.Endpoint, "zk://") {
+			zk = provider.Endpoint
+		} else {
+			masters = strings.Split(provider.Endpoint, ",")
+		}
+
+		errch := make(chan error)
+
+		changed := detectMasters(zk, masters)
+		reload := time.NewTicker(time.Second * time.Duration(provider.RefreshSeconds))
+		zkTimeout := time.Second * time.Duration(provider.ZkDetectionTimeout)
+		timeout := time.AfterFunc(zkTimeout, func() {
+			if zkTimeout > 0 {
+				errch <- fmt.Errorf("master detection timed out after %s", zkTimeout)
+			}
+		})
+
+		defer reload.Stop()
+		defer util.HandleCrash()
+
+		if !provider.Watch {
+			reload.Stop()
+			timeout.Stop()
+		}
+
+		for {
+			select {
+			case <-reload.C:
+				configuration := provider.loadMesosConfig()
+				if configuration != nil {
+					configurationChan <- types.ConfigMessage{
+						ProviderName:  "mesos",
+						Configuration: configuration,
+					}
+				}
+			case masters := <-changed:
+				if len(masters) == 0 || masters[0] == "" {
+					// no leader
+					timeout.Reset(zkTimeout)
+				} else {
+					timeout.Stop()
+				}
+				log.Debugf("new masters detected: %v", masters)
+				provider.Masters = masters
+				configuration := provider.loadMesosConfig()
+				if configuration != nil {
+					configurationChan <- types.ConfigMessage{
+						ProviderName:  "mesos",
+						Configuration: configuration,
+					}
+				}
+			case err := <-errch:
+				log.Errorf("%s", err)
+			}
+		}
+	}
+
+	notify := func(err error, time time.Duration) {
+		log.Errorf("mesos connection error %+v, retrying in %s", err, time)
+	}
+	err := backoff.RetryNotify(operation, backoff.NewExponentialBackOff(), notify)
+	if err != nil {
+		log.Fatalf("Cannot connect to mesos server %+v", err)
+	}
+	return nil
+}
+
+func (provider *Mesos) loadMesosConfig() *types.Configuration {
+	var mesosFuncMap = template.FuncMap{
+		"getBackend":         provider.getBackend,
+		"getPort":            provider.getPort,
+		"getHost":            provider.getHost,
+		"getWeight":          provider.getWeight,
+		"getDomain":          provider.getDomain,
+		"getProtocol":        provider.getProtocol,
+		"getPassHostHeader":  provider.getPassHostHeader,
+		"getPriority":        provider.getPriority,
+		"getEntryPoints":     provider.getEntryPoints,
+		"getFrontendRule":    provider.getFrontendRule,
+		"getFrontendBackend": provider.getFrontendBackend,
+		"getID":              provider.getID,
+		"getFrontEndName":    provider.getFrontEndName,
+		"replace":            replace,
+	}
+
+	t := records.NewRecordGenerator(time.Duration(provider.StateTimeoutSecond) * time.Second)
+	sj, err := t.FindMaster(provider.Masters...)
+	if err != nil {
+		log.Errorf("Failed to create a client for mesos, error: %s", err)
+		return nil
+	}
+	tasks := provider.taskRecords(sj)
+
+	//filter tasks
+	filteredTasks := fun.Filter(func(task state.Task) bool {
+		return mesosTaskFilter(task, provider.ExposedByDefault)
+	}, tasks).([]state.Task)
+
+	filteredApps := []state.Task{}
+	for _, value := range filteredTasks {
+		if !taskInSlice(value, filteredApps) {
+			filteredApps = append(filteredApps, value)
+		}
+	}
+
+	templateObjects := struct {
+		Applications []state.Task
+		Tasks        []state.Task
+		Domain       string
+	}{
+		filteredApps,
+		filteredTasks,
+		provider.Domain,
+	}
+
+	configuration, err := provider.getConfiguration("templates/mesos.tmpl", mesosFuncMap, templateObjects)
+	if err != nil {
+		log.Error(err)
+	}
+	return configuration
+}
+
+func taskInSlice(a state.Task, list []state.Task) bool {
+	for _, b := range list {
+		if b.DiscoveryInfo.Name == a.DiscoveryInfo.Name {
+			return true
+		}
+	}
+	return false
+}
+
+// labels returns all given Status.[]Labels' values whose keys are equal
+// to the given key
+func labels(task state.Task, key string) string {
+	for _, l := range task.Labels {
+		if l.Key == key {
+			return l.Value
+		}
+	}
+	return ""
+}
+
+func mesosTaskFilter(task state.Task, exposedByDefaultFlag bool) bool {
+	if len(task.DiscoveryInfo.Ports.DiscoveryPorts) == 0 {
+		log.Debugf("Filtering mesos task without port %s", task.Name)
+		return false
+	}
+	if !isMesosApplicationEnabled(task, exposedByDefaultFlag) {
+		log.Debugf("Filtering disabled mesos task %s", task.DiscoveryInfo.Name)
+		return false
+	}
+
+	//filter indeterminable task port
+	portIndexLabel := labels(task, "traefik.portIndex")
+	portValueLabel := labels(task, "traefik.port")
+	if portIndexLabel != "" && portValueLabel != "" {
+		log.Debugf("Filtering mesos task %s specifying both traefik.portIndex and traefik.port labels", task.Name)
+		return false
+	}
+	if portIndexLabel == "" && portValueLabel == "" && len(task.DiscoveryInfo.Ports.DiscoveryPorts) > 1 {
+		log.Debugf("Filtering mesos task %s with more than 1 port and no traefik.portIndex or traefik.port label", task.Name)
+		return false
+	}
+	if portIndexLabel != "" {
+		index, err := strconv.Atoi(labels(task, "traefik.portIndex"))
+		if err != nil || index < 0 || index > len(task.DiscoveryInfo.Ports.DiscoveryPorts)-1 {
+			log.Debugf("Filtering mesos task %s with unexpected value for traefik.portIndex label", task.Name)
+			return false
+		}
+	}
+	if portValueLabel != "" {
+		port, err := strconv.Atoi(labels(task, "traefik.port"))
+		if err != nil {
+			log.Debugf("Filtering mesos task %s with unexpected value for traefik.port label", task.Name)
+			return false
+		}
+
+		var foundPort bool
+		for _, exposedPort := range task.DiscoveryInfo.Ports.DiscoveryPorts {
+			if port == exposedPort.Number {
+				foundPort = true
+				break
+			}
+		}
+
+		if !foundPort {
+			log.Debugf("Filtering mesos task %s without a matching port for traefik.port label", task.Name)
+			return false
+		}
+	}
+
+	//filter healthchecks
+	if task.Statuses != nil && len(task.Statuses) > 0 && task.Statuses[0].Healthy != nil && !*task.Statuses[0].Healthy {
+		log.Debugf("Filtering mesos task %s with bad healthcheck", task.DiscoveryInfo.Name)
+		return false
+
+	}
+	return true
+}
+
+func getMesos(task state.Task, apps []state.Task) (state.Task, error) {
+	for _, application := range apps {
+		if application.DiscoveryInfo.Name == task.DiscoveryInfo.Name {
+			return application, nil
+		}
+	}
+	return state.Task{}, errors.New("Application not found: " + task.DiscoveryInfo.Name)
+}
+
+func isMesosApplicationEnabled(task state.Task, exposedByDefault bool) bool {
+	return exposedByDefault && labels(task, "traefik.enable") != "false" || labels(task, "traefik.enable") == "true"
+}
+
+func (provider *Mesos) getLabel(task state.Task, label string) (string, error) {
+	for _, tmpLabel := range task.Labels {
+		if tmpLabel.Key == label {
+			return tmpLabel.Value, nil
+		}
+	}
+	return "", errors.New("Label not found:" + label)
+}
+
+func (provider *Mesos) getPort(task state.Task, applications []state.Task) string {
+	application, err := getMesos(task, applications)
+	if err != nil {
+		log.Errorf("Unable to get mesos application from task %s", task.DiscoveryInfo.Name)
+		return ""
+	}
+
+	if portIndexLabel, err := provider.getLabel(application, "traefik.portIndex"); err == nil {
+		if index, err := strconv.Atoi(portIndexLabel); err == nil {
+			return strconv.Itoa(task.DiscoveryInfo.Ports.DiscoveryPorts[index].Number)
+		}
+	}
+	if portValueLabel, err := provider.getLabel(application, "traefik.port"); err == nil {
+		return portValueLabel
+	}
+
+	for _, port := range task.DiscoveryInfo.Ports.DiscoveryPorts {
+		return strconv.Itoa(port.Number)
+	}
+	return ""
+}
+
+func (provider *Mesos) getWeight(task state.Task, applications []state.Task) string {
+	application, errApp := getMesos(task, applications)
+	if errApp != nil {
+		log.Errorf("Unable to get mesos application from task %s", task.DiscoveryInfo.Name)
+		return "0"
+	}
+
+	if label, err := provider.getLabel(application, "traefik.weight"); err == nil {
+		return label
+	}
+	return "0"
+}
+
+func (provider *Mesos) getDomain(task state.Task) string {
+	if label, err := provider.getLabel(task, "traefik.domain"); err == nil {
+		return label
+	}
+	return provider.Domain
+}
+
+func (provider *Mesos) getProtocol(task state.Task, applications []state.Task) string {
+	application, errApp := getMesos(task, applications)
+	if errApp != nil {
+		log.Errorf("Unable to get mesos application from task %s", task.DiscoveryInfo.Name)
+		return "http"
+	}
+	if label, err := provider.getLabel(application, "traefik.protocol"); err == nil {
+		return label
+	}
+	return "http"
+}
+
+func (provider *Mesos) getPassHostHeader(task state.Task) string {
+	if passHostHeader, err := provider.getLabel(task, "traefik.frontend.passHostHeader"); err == nil {
+		return passHostHeader
+	}
+	return "false"
+}
+
+func (provider *Mesos) getPriority(task state.Task) string {
+	if priority, err := provider.getLabel(task, "traefik.frontend.priority"); err == nil {
+		return priority
+	}
+	return "0"
+}
+
+func (provider *Mesos) getEntryPoints(task state.Task) []string {
+	if entryPoints, err := provider.getLabel(task, "traefik.frontend.entryPoints"); err == nil {
+		return strings.Split(entryPoints, ",")
+	}
+	return []string{}
+}
+
+// getFrontendRule returns the frontend rule for the specified application, using
+// it's label. It returns a default one (Host) if the label is not present.
+func (provider *Mesos) getFrontendRule(task state.Task) string {
+	if label, err := provider.getLabel(task, "traefik.frontend.rule"); err == nil {
+		return label
+	}
+	return "Host:" + strings.ToLower(strings.Replace(provider.getSubDomain(task.DiscoveryInfo.Name), "_", "-", -1)) + "." + provider.Domain
+}
+
+func (provider *Mesos) getBackend(task state.Task, applications []state.Task) string {
+	application, errApp := getMesos(task, applications)
+	if errApp != nil {
+		log.Errorf("Unable to get mesos application from task %s", task.DiscoveryInfo.Name)
+		return ""
+	}
+	return provider.getFrontendBackend(application)
+}
+
+func (provider *Mesos) getFrontendBackend(task state.Task) string {
+	if label, err := provider.getLabel(task, "traefik.backend"); err == nil {
+		return label
+	}
+	return "-" + cleanupSpecialChars(task.DiscoveryInfo.Name)
+}
+
+func (provider *Mesos) getHost(task state.Task) string {
+	return task.IP(strings.Split(provider.IPSources, ",")...)
+}
+
+func (provider *Mesos) getID(task state.Task) string {
+	return cleanupSpecialChars(task.ID)
+}
+
+func (provider *Mesos) getFrontEndName(task state.Task) string {
+	return strings.Replace(cleanupSpecialChars(task.ID), "/", "-", -1)
+}
+
+func cleanupSpecialChars(s string) string {
+	return strings.Replace(strings.Replace(strings.Replace(s, ".", "-", -1), ":", "-", -1), "_", "-", -1)
+}
+
+func detectMasters(zk string, masters []string) <-chan []string {
+	changed := make(chan []string, 1)
+	if zk != "" {
+		log.Debugf("Starting master detector for ZK ", zk)
+		if md, err := detector.New(zk); err != nil {
+			log.Fatalf("failed to create master detector: %v", err)
+		} else if err := md.Detect(detect.NewMasters(masters, changed)); err != nil {
+			log.Fatalf("failed to initialize master detector: %v", err)
+		}
+	} else {
+		changed <- masters
+	}
+	return changed
+}
+
+func (provider *Mesos) taskRecords(sj state.State) []state.Task {
+	var p []state.Task // == nil
+	for _, f := range sj.Frameworks {
+		for _, task := range f.Tasks {
+			for _, slave := range sj.Slaves {
+				if task.SlaveID == slave.ID {
+					task.SlaveIP = slave.Hostname
+				}
+			}
+
+			// only do running and discoverable tasks
+			if task.State == "TASK_RUNNING" {
+				p = append(p, task)
+			}
+		}
+	}
+
+	return p
+}
+
+// ErrorFunction A function definition that returns an error
+// to be passed to the Ignore or Panic error handler
+type ErrorFunction func() error
+
+// Ignore Calls an ErrorFunction, and ignores the result.
+// This allows us to be more explicit when there is no error
+// handling to be done, for example in defers
+func Ignore(f ErrorFunction) {
+	_ = f()
+}
+func (provider *Mesos) getSubDomain(name string) string {
+	if provider.GroupsAsSubDomains {
+		splitedName := strings.Split(strings.TrimPrefix(name, "/"), "/")
+		sort.Sort(sort.Reverse(sort.StringSlice(splitedName)))
+		reverseName := strings.Join(splitedName, ".")
+		return reverseName
+	}
+	return strings.Replace(strings.TrimPrefix(name, "/"), "/", "-", -1)
+}

provider/mesos_test.go

@@ -0,0 +1,351 @@
+package provider
+
+import (
+	log "github.com/Sirupsen/logrus"
+	"github.com/containous/traefik/types"
+	"github.com/mesosphere/mesos-dns/records/state"
+	"reflect"
+	"testing"
+)
+
+func TestMesosTaskFilter(t *testing.T) {
+
+	cases := []struct {
+		mesosTask        state.Task
+		expected         bool
+		exposedByDefault bool
+	}{
+		{
+			mesosTask:        state.Task{},
+			expected:         false,
+			exposedByDefault: true,
+		},
+		{
+			mesosTask:        task(statuses(status(setState("TASK_RUNNING")))),
+			expected:         false,
+			exposedByDefault: true,
+		},
+		{
+			mesosTask: task(statuses(status(
+				setState("TASK_RUNNING"),
+				setHealthy(true))),
+				setLabels("traefik.enable", "false"),
+				discovery(setDiscoveryPort("TCP", 80, "WEB")),
+			),
+			expected:         false, // because label traefik.enable = false
+			exposedByDefault: false,
+		},
+		{
+			mesosTask: task(statuses(status(
+				setState("TASK_RUNNING"),
+				setHealthy(true))),
+				setLabels("traefik.enable", "true"),
+				discovery(setDiscoveryPort("TCP", 80, "WEB")),
+			),
+			expected:         true,
+			exposedByDefault: false,
+		},
+		{
+			mesosTask: task(statuses(status(
+				setState("TASK_RUNNING"),
+				setHealthy(true))),
+				setLabels("traefik.enable", "true"),
+				discovery(setDiscoveryPort("TCP", 80, "WEB")),
+			),
+			expected:         true,
+			exposedByDefault: true,
+		},
+		{
+			mesosTask: task(statuses(status(
+				setState("TASK_RUNNING"),
+				setHealthy(true))),
+				setLabels("traefik.enable", "false"),
+				discovery(setDiscoveryPort("TCP", 80, "WEB")),
+			),
+			expected:         false, // because label traefik.enable = false (even wherek exposedByDefault = true)
+			exposedByDefault: true,
+		},
+		{
+			mesosTask: task(statuses(status(
+				setState("TASK_RUNNING"),
+				setHealthy(true))),
+				setLabels("traefik.enable", "true",
+					"traefik.portIndex", "1",
+					"traefik.port", "80"),
+				discovery(setDiscoveryPort("TCP", 80, "WEB")),
+			),
+			expected:         false, // traefik.portIndex & traefik.port cannot be set both
+			exposedByDefault: true,
+		},
+		{
+			mesosTask: task(statuses(status(
+				setState("TASK_RUNNING"),
+				setHealthy(true))),
+				setLabels("traefik.enable", "true",
+					"traefik.portIndex", "1"),
+				discovery(setDiscoveryPorts("TCP", 80, "WEB HTTP", "TCP", 443, "WEB HTTPS")),
+			),
+			expected:         true,
+			exposedByDefault: true,
+		},
+		{
+			mesosTask: task(statuses(status(
+				setState("TASK_RUNNING"),
+				setHealthy(true))),
+				setLabels("traefik.enable", "true"),
+				discovery(setDiscoveryPorts("TCP", 80, "WEB HTTP", "TCP", 443, "WEB HTTPS")),
+			),
+			expected:         false, // more than 1 discovery port but no traefik.port* label
+			exposedByDefault: true,
+		},
+		{
+			mesosTask: task(statuses(status(
+				setState("TASK_RUNNING"),
+				setHealthy(true))),
+				setLabels("traefik.enable", "true",
+					"traefik.portIndex", "1"),
+				discovery(setDiscoveryPort("TCP", 80, "WEB")),
+			),
+			expected:         false, // traefik.portIndex and discoveryPorts don't correspond
+			exposedByDefault: true,
+		}, {
+			mesosTask: task(statuses(status(
+				setState("TASK_RUNNING"),
+				setHealthy(true))),
+				setLabels("traefik.enable", "true",
+					"traefik.portIndex", "0"),
+				discovery(setDiscoveryPort("TCP", 80, "WEB")),
+			),
+			expected:         true, // traefik.portIndex and discoveryPorts correspond
+			exposedByDefault: true,
+		}, {
+			mesosTask: task(statuses(status(
+				setState("TASK_RUNNING"),
+				setHealthy(true))),
+				setLabels("traefik.enable", "true",
+					"traefik.port", "TRAEFIK"),
+				discovery(setDiscoveryPort("TCP", 80, "WEB")),
+			),
+			expected:         false, // traefik.port is not an integer
+			exposedByDefault: true,
+		}, {
+			mesosTask: task(statuses(status(
+				setState("TASK_RUNNING"),
+				setHealthy(true))),
+				setLabels("traefik.enable", "true",
+					"traefik.port", "443"),
+				discovery(setDiscoveryPort("TCP", 80, "WEB")),
+			),
+			expected:         false, // traefik.port is not the same as discovery.port
+			exposedByDefault: true,
+		}, {
+			mesosTask: task(statuses(status(
+				setState("TASK_RUNNING"),
+				setHealthy(true))),
+				setLabels("traefik.enable", "true",
+					"traefik.port", "80"),
+				discovery(setDiscoveryPort("TCP", 80, "WEB")),
+			),
+			expected:         true, // traefik.port is the same as discovery.port
+			exposedByDefault: true,
+		}, {
+			mesosTask: task(statuses(status(
+				setState("TASK_RUNNING"))),
+				setLabels("traefik.enable", "true",
+					"traefik.port", "80"),
+				discovery(setDiscoveryPort("TCP", 80, "WEB")),
+			),
+			expected:         true, // No healthCheck
+			exposedByDefault: true,
+		}, {
+			mesosTask: task(statuses(status(
+				setState("TASK_RUNNING"),
+				setHealthy(false))),
+				setLabels("traefik.enable", "true",
+					"traefik.port", "80"),
+				discovery(setDiscoveryPort("TCP", 80, "WEB")),
+			),
+			expected:         false, // HealthCheck at false
+			exposedByDefault: true,
+		},
+	}
+
+	for _, c := range cases {
+		actual := mesosTaskFilter(c.mesosTask, c.exposedByDefault)
+		log.Errorf("Statuses : %v", c.mesosTask.Statuses)
+		log.Errorf("Label : %v", c.mesosTask.Labels)
+		log.Errorf("DiscoveryInfo : %v", c.mesosTask.DiscoveryInfo)
+		if actual != c.expected {
+			t.Fatalf("expected %v, got %v", c.expected, actual)
+		}
+	}
+}
+
+func TestTaskRecords(t *testing.T) {
+	var task = state.Task{
+		SlaveID: "s_id",
+		State:   "TASK_RUNNING",
+	}
+	var framework = state.Framework{
+		Tasks: []state.Task{task},
+	}
+	var slave = state.Slave{
+		ID:       "s_id",
+		Hostname: "127.0.0.1",
+	}
+	var state = state.State{
+		Slaves:     []state.Slave{slave},
+		Frameworks: []state.Framework{framework},
+	}
+
+	provider := &Mesos{
+		Domain:           "docker.localhost",
+		ExposedByDefault: true,
+	}
+	var p = provider.taskRecords(state)
+	if len(p) == 0 {
+		t.Fatal("taskRecord should return at least one task")
+	}
+	if p[0].SlaveIP != slave.Hostname {
+		t.Fatalf("The SlaveIP (%s) should be set with the slave hostname (%s)", p[0].SlaveID, slave.Hostname)
+	}
+}
+
+func TestMesosLoadConfig(t *testing.T) {
+	cases := []struct {
+		applicationsError bool
+		tasksError        bool
+		mesosTask         state.Task
+		expected          bool
+		exposedByDefault  bool
+		expectedNil       bool
+		expectedFrontends map[string]*types.Frontend
+		expectedBackends  map[string]*types.Backend
+	}{}
+	for _, c := range cases {
+		provider := &Mesos{
+			Domain:           "docker.localhost",
+			ExposedByDefault: true,
+		}
+		actualConfig := provider.loadMesosConfig()
+		if c.expectedNil {
+			if actualConfig != nil {
+				t.Fatalf("Should have been nil, got %v", actualConfig)
+			}
+		} else {
+			// Compare backends
+			if !reflect.DeepEqual(actualConfig.Backends, c.expectedBackends) {
+				t.Fatalf("expected %#v, got %#v", c.expectedBackends, actualConfig.Backends)
+			}
+			if !reflect.DeepEqual(actualConfig.Frontends, c.expectedFrontends) {
+				t.Fatalf("expected %#v, got %#v", c.expectedFrontends, actualConfig.Frontends)
+			}
+		}
+	}
+}
+
+// test helpers
+
+type (
+	taskOpt   func(*state.Task)
+	statusOpt func(*state.Status)
+)
+
+func task(opts ...taskOpt) state.Task {
+	var t state.Task
+	for _, opt := range opts {
+		opt(&t)
+	}
+	return t
+}
+
+func statuses(st ...state.Status) taskOpt {
+	return func(t *state.Task) {
+		t.Statuses = append(t.Statuses, st...)
+	}
+}
+
+func discovery(dp state.DiscoveryInfo) taskOpt {
+	return func(t *state.Task) {
+		t.DiscoveryInfo = dp
+	}
+}
+
+func setLabels(kvs ...string) taskOpt {
+	return func(t *state.Task) {
+		if len(kvs)%2 != 0 {
+			panic("odd number")
+		}
+
+		for i := 0; i < len(kvs); i += 2 {
+			var label = state.Label{Key: kvs[i], Value: kvs[i+1]}
+			log.Errorf("Label1.1 : %v", label)
+			t.Labels = append(t.Labels, label)
+			log.Errorf("Label1.2 : %v", t.Labels)
+		}
+
+	}
+}
+
+func status(opts ...statusOpt) state.Status {
+	var s state.Status
+	for _, opt := range opts {
+		opt(&s)
+	}
+	return s
+}
+
+func setDiscoveryPort(proto string, port int, name string) state.DiscoveryInfo {
+
+	dp := state.DiscoveryPort{
+		Protocol: proto,
+		Number:   port,
+		Name:     name,
+	}
+
+	discoveryPorts := []state.DiscoveryPort{dp}
+
+	ports := state.Ports{
+		DiscoveryPorts: discoveryPorts,
+	}
+
+	return state.DiscoveryInfo{
+		Ports: ports,
+	}
+}
+
+func setDiscoveryPorts(proto1 string, port1 int, name1 string, proto2 string, port2 int, name2 string) state.DiscoveryInfo {
+
+	dp1 := state.DiscoveryPort{
+		Protocol: proto1,
+		Number:   port1,
+		Name:     name1,
+	}
+
+	dp2 := state.DiscoveryPort{
+		Protocol: proto2,
+		Number:   port2,
+		Name:     name2,
+	}
+
+	discoveryPorts := []state.DiscoveryPort{dp1, dp2}
+
+	ports := state.Ports{
+		DiscoveryPorts: discoveryPorts,
+	}
+
+	return state.DiscoveryInfo{
+		Ports: ports,
+	}
+}
+
+func setState(st string) statusOpt {
+	return func(s *state.Status) {
+		s.State = st
+	}
+}
+func setHealthy(b bool) statusOpt {
+	return func(s *state.Status) {
+		s.Healthy = &b
+	}
+}

server.go

@@ -255,6 +255,9 @@ func (server *Server) configureProviders() {
 	if server.globalConfiguration.Kubernetes != nil {
 		server.providers = append(server.providers, server.globalConfiguration.Kubernetes)
 	}
+	if server.globalConfiguration.Mesos != nil {
+		server.providers = append(server.providers, server.globalConfiguration.Mesos)
+	}
 }
 
 func (server *Server) startProviders() {

templates/mesos.tmpl

@@ -0,0 +1,18 @@
+{{$apps := .Applications}}
+[backends]{{range .Tasks}}
+    [backends.backend{{getBackend . $apps}}.servers.server-{{getID .}}]
+    url = "{{getProtocol . $apps}}://{{getHost .}}:{{getPort . $apps}}"
+    weight = {{getWeight . $apps}}
+{{end}}
+
+[frontends]{{range .Applications}}
+  [frontends.frontend-{{getFrontEndName .}}]
+  backend = "backend{{getFrontendBackend .}}"
+  passHostHeader = {{getPassHostHeader .}}
+  priority = {{getPriority .}}
+  entryPoints = [{{range getEntryPoints .}}
+    "{{.}}",
+  {{end}}]
+    [frontends.frontend-{{getFrontEndName .}}.routes.route-host{{getFrontEndName .}}]
+    rule = "{{getFrontendRule .}}"
+{{end}}

traefik.sample.toml

@@ -331,6 +331,77 @@
 #
 # dcosToken = "xxxxxx"
 
+
+################################################################
+# Mesos configuration backend
+################################################################
+
+# Enable Mesos configuration backend
+#
+# Optional
+#
+# [mesos]
+
+# Mesos server endpoint.
+# You can also specify multiple endpoint for Mesos:
+# endpoint = "192.168.35.40:5050,192.168.35.41:5050,192.168.35.42:5050"
+# endpoint = "zk://192.168.35.20:2181,192.168.35.21:2181,192.168.35.22:2181/mesos"
+#
+# Required
+#
+# endpoint = "http://127.0.0.1:8080"
+
+# Enable watch Mesos changes
+#
+# Optional
+#
+# watch = true
+
+# Default domain used.
+# Can be overridden by setting the "traefik.domain" label on an application.
+#
+# Required
+#
+# domain = "mesos.localhost"
+
+# Override default configuration template. For advanced users :)
+#
+# Optional
+#
+# filename = "mesos.tmpl"
+
+# Expose Mesos apps by default in traefik
+#
+# Optional
+# Default: false
+#
+# ExposedByDefault = true
+
+# TLS client configuration. https://golang.org/pkg/crypto/tls/#Config
+#
+# Optional
+#
+# [mesos.TLS]
+# InsecureSkipVerify = true
+
+#
+#
+# Optional
+#
+# ZkDetectionTimeout = 30
+
+#
+#
+# Optional
+#
+# RefreshSeconds = 30
+
+#
+#
+# Optional
+#
+# IPSources = "host"
+
 ################################################################
 # Kubernetes Ingress configuration backend
 ################################################################