Merge pull request #720 from guilhem/marathon-lb
Add basic compatibility with marathon-lb
This commit is contained in:
commit
3b2410d904
3 changed files with 125 additions and 37 deletions
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@ -783,6 +783,13 @@ domain = "marathon.localhost"
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#
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# groupsAsSubDomains = true
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# Enable compatibility with marathon-lb labels
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#
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# Optional
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# Default: false
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#
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# marathonLBCompatibility = true
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# Enable Marathon basic authentication
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#
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# Optional
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@ -26,14 +26,15 @@ var _ Provider = (*Marathon)(nil)
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// Marathon holds configuration of the Marathon provider.
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type Marathon struct {
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BaseProvider
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Endpoint string `description:"Marathon server endpoint. You can also specify multiple endpoint for Marathon"`
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Domain string `description:"Default domain used"`
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ExposedByDefault bool `description:"Expose Marathon apps by default"`
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GroupsAsSubDomains bool `description:"Convert Marathon groups to subdomains"`
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DCOSToken string `description:"DCOSToken for DCOS environment, This will override the Authorization header"`
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TLS *ClientTLS `description:"Enable Docker TLS support"`
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Basic *MarathonBasic
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marathonClient marathon.Marathon
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Endpoint string `description:"Marathon server endpoint. You can also specify multiple endpoint for Marathon"`
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Domain string `description:"Default domain used"`
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ExposedByDefault bool `description:"Expose Marathon apps by default"`
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GroupsAsSubDomains bool `description:"Convert Marathon groups to subdomains"`
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DCOSToken string `description:"DCOSToken for DCOS environment, This will override the Authorization header"`
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MarathonLBCompatibility bool `description:"Add compatibility with marathon-lb labels"`
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TLS *ClientTLS `description:"Enable Docker TLS support"`
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Basic *MarathonBasic
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marathonClient marathon.Marathon
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}
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// MarathonBasic holds basic authentication specific configurations
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@ -194,6 +195,11 @@ func (provider *Marathon) taskFilter(task marathon.Task, applications *marathon.
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}
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label, _ := provider.getLabel(application, "traefik.tags")
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constraintTags := strings.Split(label, ",")
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if provider.MarathonLBCompatibility {
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if label, err := provider.getLabel(application, "HAPROXY_GROUP"); err == nil {
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constraintTags = append(constraintTags, label)
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}
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}
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if ok, failingConstraint := provider.MatchConstraints(constraintTags); !ok {
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if failingConstraint != nil {
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log.Debugf("Application %v pruned by '%v' constraint", application.ID, failingConstraint.String())
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@ -263,6 +269,11 @@ func (provider *Marathon) taskFilter(task marathon.Task, applications *marathon.
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func (provider *Marathon) applicationFilter(app marathon.Application, filteredTasks []marathon.Task) bool {
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label, _ := provider.getLabel(app, "traefik.tags")
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constraintTags := strings.Split(label, ",")
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if provider.MarathonLBCompatibility {
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if label, err := provider.getLabel(app, "HAPROXY_GROUP"); err == nil {
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constraintTags = append(constraintTags, label)
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}
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}
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if ok, failingConstraint := provider.MatchConstraints(constraintTags); !ok {
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if failingConstraint != nil {
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log.Debugf("Application %v pruned by '%v' constraint", app.ID, failingConstraint.String())
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@ -384,6 +395,11 @@ func (provider *Marathon) getFrontendRule(application marathon.Application) stri
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if label, err := provider.getLabel(application, "traefik.frontend.rule"); err == nil {
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return label
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}
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if provider.MarathonLBCompatibility {
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if label, err := provider.getLabel(application, "HAPROXY_0_VHOST"); err == nil {
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return "Host:" + label
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}
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}
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return "Host:" + provider.getSubDomain(application.ID) + "." + provider.Domain
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}
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@ -684,9 +684,10 @@ func TestMarathonTaskFilter(t *testing.T) {
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func TestMarathonAppConstraints(t *testing.T) {
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cases := []struct {
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application marathon.Application
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filteredTasks []marathon.Task
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expected bool
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application marathon.Application
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filteredTasks []marathon.Task
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expected bool
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marathonLBCompatibility bool
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}{
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{
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application: marathon.Application{
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@ -698,28 +699,48 @@ func TestMarathonAppConstraints(t *testing.T) {
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AppID: "foo1",
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},
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},
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expected: false,
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marathonLBCompatibility: false,
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expected: false,
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},
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{
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application: marathon.Application{
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ID: "foo",
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ID: "foo2",
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Labels: &map[string]string{
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"traefik.tags": "valid",
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},
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},
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filteredTasks: []marathon.Task{
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{
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AppID: "foo",
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AppID: "foo2",
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},
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},
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expected: true,
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marathonLBCompatibility: false,
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expected: true,
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},
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{
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application: marathon.Application{
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ID: "foo3",
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Labels: &map[string]string{
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"HAPROXY_GROUP": "valid",
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"traefik.tags": "notvalid",
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},
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},
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filteredTasks: []marathon.Task{
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{
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AppID: "foo3",
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},
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},
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marathonLBCompatibility: true,
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expected: true,
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},
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}
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provider := &Marathon{}
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constraint, _ := types.NewConstraint("tag==valid")
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provider.Constraints = []types.Constraint{*constraint}
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for _, c := range cases {
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provider := &Marathon{
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MarathonLBCompatibility: c.marathonLBCompatibility,
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}
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constraint, _ := types.NewConstraint("tag==valid")
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provider.Constraints = []types.Constraint{*constraint}
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actual := provider.applicationFilter(c.application, c.filteredTasks)
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if actual != c.expected {
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t.Fatalf("expected %v, got %v: %v", c.expected, actual, c.application)
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@ -729,9 +750,10 @@ func TestMarathonAppConstraints(t *testing.T) {
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}
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func TestMarathonTaskConstraints(t *testing.T) {
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cases := []struct {
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applications []marathon.Application
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filteredTask marathon.Task
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expected bool
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applications []marathon.Application
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filteredTask marathon.Task
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expected bool
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marathonLBCompatibility bool
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}{
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{
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applications: []marathon.Application{
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@ -749,7 +771,8 @@ func TestMarathonTaskConstraints(t *testing.T) {
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AppID: "foo1",
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Ports: []int{80},
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},
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expected: false,
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marathonLBCompatibility: false,
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expected: false,
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},
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{
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applications: []marathon.Application{
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@ -764,14 +787,40 @@ func TestMarathonTaskConstraints(t *testing.T) {
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AppID: "foo2",
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Ports: []int{80},
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},
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expected: true,
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marathonLBCompatibility: false,
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expected: true,
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},
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{
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applications: []marathon.Application{
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{
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ID: "foo3",
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Labels: &map[string]string{
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"HAPROXY_GROUP": "valid",
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"traefik.tags": "notvalid",
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},
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}, {
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ID: "foo4",
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Labels: &map[string]string{
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"HAPROXY_GROUP": "notvalid",
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"traefik.tags": "valid",
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},
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},
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},
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filteredTask: marathon.Task{
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AppID: "foo3",
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Ports: []int{80},
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},
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marathonLBCompatibility: true,
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expected: true,
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},
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}
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provider := &Marathon{}
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constraint, _ := types.NewConstraint("tag==valid")
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provider.Constraints = []types.Constraint{*constraint}
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for _, c := range cases {
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provider := &Marathon{
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MarathonLBCompatibility: c.marathonLBCompatibility,
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}
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constraint, _ := types.NewConstraint("tag==valid")
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provider.Constraints = []types.Constraint{*constraint}
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apps := new(marathon.Applications)
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apps.Apps = c.applications
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actual := provider.taskFilter(c.filteredTask, apps, true)
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@ -1152,37 +1201,53 @@ func TestMarathonGetEntryPoints(t *testing.T) {
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}
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func TestMarathonGetFrontendRule(t *testing.T) {
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provider := &Marathon{
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Domain: "docker.localhost",
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}
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applications := []struct {
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application marathon.Application
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expected string
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application marathon.Application
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expected string
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marathonLBCompatibility bool
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}{
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{
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application: marathon.Application{
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Labels: &map[string]string{}},
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expected: "Host:.docker.localhost",
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marathonLBCompatibility: true,
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expected: "Host:.docker.localhost",
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},
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{
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application: marathon.Application{
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ID: "test",
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Labels: &map[string]string{},
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ID: "test",
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Labels: &map[string]string{
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"HAPROXY_0_VHOST": "foo.bar",
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},
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},
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expected: "Host:test.docker.localhost",
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marathonLBCompatibility: false,
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expected: "Host:test.docker.localhost",
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},
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{
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application: marathon.Application{
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Labels: &map[string]string{
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"traefik.frontend.rule": "Host:foo.bar",
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"HAPROXY_0_VHOST": "notvalid",
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},
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},
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expected: "Host:foo.bar",
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marathonLBCompatibility: true,
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expected: "Host:foo.bar",
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},
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{
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application: marathon.Application{
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Labels: &map[string]string{
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"HAPROXY_0_VHOST": "foo.bar",
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},
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},
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marathonLBCompatibility: true,
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expected: "Host:foo.bar",
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},
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}
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for _, a := range applications {
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provider := &Marathon{
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Domain: "docker.localhost",
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MarathonLBCompatibility: a.marathonLBCompatibility,
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}
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actual := provider.getFrontendRule(a.application)
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if actual != a.expected {
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t.Fatalf("expected %q, got %q", a.expected, actual)
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