Add Rancher provider again
This commit is contained in:
Manuel Zapf
Traefiker Bot
parent
ed12366d52
commit
e1d097ea20
31 changed files with 2585 additions and 295 deletions
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@ -44,6 +44,9 @@ func NewProviderAggregator(conf static.Providers) ProviderAggregator {
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if conf.KubernetesCRD != nil {
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p.quietAddProvider(conf.KubernetesCRD)
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}
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if conf.Rancher != nil {
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p.quietAddProvider(conf.Rancher)
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}
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return p
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}
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237
pkg/provider/rancher/config.go
Normal file
237
pkg/provider/rancher/config.go
Normal file
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@ -0,0 +1,237 @@
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package rancher
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import (
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"context"
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"errors"
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"fmt"
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"net"
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"strings"
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"github.com/containous/traefik/pkg/config"
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"github.com/containous/traefik/pkg/log"
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"github.com/containous/traefik/pkg/provider"
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"github.com/containous/traefik/pkg/provider/label"
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)
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func (p *Provider) buildConfiguration(ctx context.Context, services []rancherData) *config.Configuration {
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configurations := make(map[string]*config.Configuration)
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for _, service := range services {
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ctxService := log.With(ctx, log.Str("service", service.Name))
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if !p.keepService(ctx, service) {
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continue
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}
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logger := log.FromContext(ctxService)
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confFromLabel, err := label.DecodeConfiguration(service.Labels)
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if err != nil {
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logger.Error(err)
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continue
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}
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if len(confFromLabel.TCP.Routers) > 0 || len(confFromLabel.TCP.Services) > 0 {
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err := p.buildTCPServiceConfiguration(ctxService, service, confFromLabel.TCP)
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if err != nil {
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logger.Error(err)
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continue
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}
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provider.BuildTCPRouterConfiguration(ctxService, confFromLabel.TCP)
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if len(confFromLabel.HTTP.Routers) == 0 &&
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len(confFromLabel.HTTP.Middlewares) == 0 &&
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len(confFromLabel.HTTP.Services) == 0 {
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configurations[service.Name] = confFromLabel
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continue
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}
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}
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err = p.buildServiceConfiguration(ctx, service, confFromLabel.HTTP)
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if err != nil {
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logger.Error(err)
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continue
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}
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model := struct {
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Name string
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Labels map[string]string
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}{
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Name: service.Name,
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Labels: service.Labels,
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}
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provider.BuildRouterConfiguration(ctx, confFromLabel.HTTP, service.Name, p.defaultRuleTpl, model)
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configurations[service.Name] = confFromLabel
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}
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return provider.Merge(ctx, configurations)
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}
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func (p *Provider) buildTCPServiceConfiguration(ctx context.Context, service rancherData, configuration *config.TCPConfiguration) error {
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serviceName := service.Name
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if len(configuration.Services) == 0 {
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configuration.Services = make(map[string]*config.TCPService)
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lb := &config.TCPLoadBalancerService{}
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lb.SetDefaults()
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configuration.Services[serviceName] = &config.TCPService{
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LoadBalancer: lb,
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}
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}
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for _, confService := range configuration.Services {
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err := p.addServerTCP(ctx, service, confService.LoadBalancer)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func (p *Provider) buildServiceConfiguration(ctx context.Context, service rancherData, configuration *config.HTTPConfiguration) error {
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serviceName := service.Name
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if len(configuration.Services) == 0 {
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configuration.Services = make(map[string]*config.Service)
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lb := &config.LoadBalancerService{}
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lb.SetDefaults()
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configuration.Services[serviceName] = &config.Service{
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LoadBalancer: lb,
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}
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}
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for _, confService := range configuration.Services {
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err := p.addServers(ctx, service, confService.LoadBalancer)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func (p *Provider) keepService(ctx context.Context, service rancherData) bool {
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logger := log.FromContext(ctx)
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if !service.ExtraConf.Enable {
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logger.Debug("Filtering disabled service.")
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return false
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}
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if ok, failingConstraint := p.MatchConstraints(service.ExtraConf.Tags); !ok {
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if failingConstraint != nil {
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logger.Debugf("service pruned by %q constraint", failingConstraint.String())
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}
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return false
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}
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if p.EnableServiceHealthFilter {
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if service.Health != "" && service.Health != healthy && service.Health != updatingHealthy {
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logger.Debugf("Filtering service %s with healthState of %s \n", service.Name, service.Health)
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return false
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}
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if service.State != "" && service.State != active && service.State != updatingActive && service.State != upgraded && service.State != upgrading {
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logger.Debugf("Filtering service %s with state of %s \n", service.Name, service.State)
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return false
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}
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}
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return true
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}
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func (p *Provider) addServerTCP(ctx context.Context, service rancherData, loadBalancer *config.TCPLoadBalancerService) error {
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log.FromContext(ctx).Debugf("Trying to add servers for service %s \n", service.Name)
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serverPort := ""
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if loadBalancer != nil && len(loadBalancer.Servers) > 0 {
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serverPort = loadBalancer.Servers[0].Port
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}
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port := getServicePort(service)
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if len(loadBalancer.Servers) == 0 {
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server := config.TCPServer{}
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server.SetDefaults()
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loadBalancer.Servers = []config.TCPServer{server}
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}
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if serverPort != "" {
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port = serverPort
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loadBalancer.Servers[0].Port = ""
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}
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if port == "" {
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return errors.New("port is missing")
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}
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var servers []config.TCPServer
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for _, containerIP := range service.Containers {
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servers = append(servers, config.TCPServer{
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Address: net.JoinHostPort(containerIP, port),
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Weight: 1,
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})
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}
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loadBalancer.Servers = servers
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return nil
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}
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func (p *Provider) addServers(ctx context.Context, service rancherData, loadBalancer *config.LoadBalancerService) error {
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log.FromContext(ctx).Debugf("Trying to add servers for service %s \n", service.Name)
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serverPort := getLBServerPort(loadBalancer)
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port := getServicePort(service)
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if len(loadBalancer.Servers) == 0 {
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server := config.Server{}
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server.SetDefaults()
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loadBalancer.Servers = []config.Server{server}
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}
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if serverPort != "" {
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port = serverPort
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loadBalancer.Servers[0].Port = ""
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}
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if port == "" {
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return errors.New("port is missing")
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}
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var servers []config.Server
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for _, containerIP := range service.Containers {
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servers = append(servers, config.Server{
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URL: fmt.Sprintf("%s://%s", loadBalancer.Servers[0].Scheme, net.JoinHostPort(containerIP, port)),
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Weight: 1,
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})
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}
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loadBalancer.Servers = servers
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return nil
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}
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func getLBServerPort(loadBalancer *config.LoadBalancerService) string {
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if loadBalancer != nil && len(loadBalancer.Servers) > 0 {
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return loadBalancer.Servers[0].Port
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}
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return ""
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}
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func getServicePort(data rancherData) string {
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rawPort := strings.Split(data.Port, "/")[0]
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hostPort := strings.Split(rawPort, ":")
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if len(hostPort) >= 2 {
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return hostPort[1]
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}
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if len(hostPort) > 0 && hostPort[0] != "" {
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return hostPort[0]
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}
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return rawPort
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}
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788
pkg/provider/rancher/config_test.go
Normal file
788
pkg/provider/rancher/config_test.go
Normal file
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@ -0,0 +1,788 @@
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package rancher
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import (
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"context"
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"testing"
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"github.com/containous/traefik/pkg/config"
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"github.com/containous/traefik/pkg/types"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func Test_buildConfiguration(t *testing.T) {
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testCases := []struct {
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desc string
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containers []rancherData
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constraints types.Constraints
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expected *config.Configuration
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}{
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{
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desc: "one service no label",
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containers: []rancherData{
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{
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Name: "Test",
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Labels: map[string]string{},
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Port: "80/tcp",
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Containers: []string{"127.0.0.1"},
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Health: "",
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State: "",
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},
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},
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expected: &config.Configuration{
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TCP: &config.TCPConfiguration{
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Routers: map[string]*config.TCPRouter{},
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Services: map[string]*config.TCPService{},
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},
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HTTP: &config.HTTPConfiguration{
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Routers: map[string]*config.Router{
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"Test": {
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Service: "Test",
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Rule: "Host(`Test.traefik.wtf`)",
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},
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},
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Middlewares: map[string]*config.Middleware{},
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Services: map[string]*config.Service{
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"Test": {
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LoadBalancer: &config.LoadBalancerService{
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Servers: []config.Server{
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{
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URL: "http://127.0.0.1:80",
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Weight: 1,
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},
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},
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Method: "wrr",
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PassHostHeader: true,
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},
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},
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},
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},
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},
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},
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{
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desc: "two services no label",
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containers: []rancherData{
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{
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Name: "Test1",
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Labels: map[string]string{},
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Port: "80/tcp",
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Containers: []string{"127.0.0.1"},
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Health: "",
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State: "",
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},
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{
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Name: "Test2",
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Labels: map[string]string{},
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Port: "80/tcp",
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Containers: []string{"127.0.0.2"},
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Health: "",
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State: "",
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},
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},
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expected: &config.Configuration{
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TCP: &config.TCPConfiguration{
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Routers: map[string]*config.TCPRouter{},
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Services: map[string]*config.TCPService{},
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},
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HTTP: &config.HTTPConfiguration{
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Routers: map[string]*config.Router{
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"Test1": {
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Service: "Test1",
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Rule: "Host(`Test1.traefik.wtf`)",
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},
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"Test2": {
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Service: "Test2",
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Rule: "Host(`Test2.traefik.wtf`)",
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},
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},
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Middlewares: map[string]*config.Middleware{},
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Services: map[string]*config.Service{
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"Test1": {
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LoadBalancer: &config.LoadBalancerService{
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Servers: []config.Server{
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{
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URL: "http://127.0.0.1:80",
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Weight: 1,
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},
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},
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Method: "wrr",
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PassHostHeader: true,
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},
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},
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"Test2": {
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LoadBalancer: &config.LoadBalancerService{
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Servers: []config.Server{
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{
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URL: "http://127.0.0.2:80",
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Weight: 1,
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},
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},
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Method: "wrr",
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PassHostHeader: true,
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},
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},
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},
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},
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},
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},
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{
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desc: "two services no label multiple containers",
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containers: []rancherData{
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{
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Name: "Test1",
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Labels: map[string]string{},
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Port: "80/tcp",
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Containers: []string{"127.0.0.1", "127.0.0.2"},
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Health: "",
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State: "",
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},
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{
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Name: "Test2",
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Labels: map[string]string{},
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Port: "80/tcp",
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Containers: []string{"128.0.0.1"},
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Health: "",
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State: "",
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},
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},
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expected: &config.Configuration{
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TCP: &config.TCPConfiguration{
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Routers: map[string]*config.TCPRouter{},
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Services: map[string]*config.TCPService{},
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},
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HTTP: &config.HTTPConfiguration{
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Routers: map[string]*config.Router{
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"Test1": {
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Service: "Test1",
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Rule: "Host(`Test1.traefik.wtf`)",
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},
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"Test2": {
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Service: "Test2",
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Rule: "Host(`Test2.traefik.wtf`)",
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},
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},
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Middlewares: map[string]*config.Middleware{},
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Services: map[string]*config.Service{
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"Test1": {
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LoadBalancer: &config.LoadBalancerService{
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Servers: []config.Server{
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{
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URL: "http://127.0.0.1:80",
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Weight: 1,
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},
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{
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URL: "http://127.0.0.2:80",
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Weight: 1,
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},
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},
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Method: "wrr",
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PassHostHeader: true,
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},
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},
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"Test2": {
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LoadBalancer: &config.LoadBalancerService{
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Servers: []config.Server{
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{
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URL: "http://128.0.0.1:80",
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Weight: 1,
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},
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},
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Method: "wrr",
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PassHostHeader: true,
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},
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},
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},
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},
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},
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},
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{
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desc: "one service some labels",
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containers: []rancherData{
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{
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Name: "Test",
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Labels: map[string]string{
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"traefik.http.services.Service1.loadbalancer.method": "wrr",
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"traefik.http.routers.Router1.rule": "Host(`foo.com`)",
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"traefik.http.routers.Router1.service": "Service1",
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},
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Port: "80/tcp",
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Containers: []string{"127.0.0.1"},
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Health: "",
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State: "",
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},
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},
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expected: &config.Configuration{
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TCP: &config.TCPConfiguration{
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Routers: map[string]*config.TCPRouter{},
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Services: map[string]*config.TCPService{},
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},
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HTTP: &config.HTTPConfiguration{
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Routers: map[string]*config.Router{
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"Router1": {
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Service: "Service1",
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Rule: "Host(`foo.com`)",
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},
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},
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Middlewares: map[string]*config.Middleware{},
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Services: map[string]*config.Service{
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"Service1": {
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LoadBalancer: &config.LoadBalancerService{
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Servers: []config.Server{
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{
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URL: "http://127.0.0.1:80",
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Weight: 1,
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},
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},
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Method: "wrr",
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PassHostHeader: true,
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},
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},
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},
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},
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},
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},
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{
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desc: "one service which is unhealthy",
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containers: []rancherData{
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{
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Name: "Test",
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Port: "80/tcp",
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Containers: []string{"127.0.0.1"},
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Health: "broken",
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State: "",
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},
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},
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expected: &config.Configuration{
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TCP: &config.TCPConfiguration{
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Routers: map[string]*config.TCPRouter{},
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Services: map[string]*config.TCPService{},
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},
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HTTP: &config.HTTPConfiguration{
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Routers: map[string]*config.Router{},
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Middlewares: map[string]*config.Middleware{},
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Services: map[string]*config.Service{},
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},
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},
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},
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{
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desc: "one service which is upgrading",
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containers: []rancherData{
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{
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Name: "Test",
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Port: "80/tcp",
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Containers: []string{"127.0.0.1"},
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Health: "",
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State: "upgradefailed",
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},
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},
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expected: &config.Configuration{
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TCP: &config.TCPConfiguration{
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Routers: map[string]*config.TCPRouter{},
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Services: map[string]*config.TCPService{},
|
||||
},
|
||||
HTTP: &config.HTTPConfiguration{
|
||||
Routers: map[string]*config.Router{},
|
||||
Middlewares: map[string]*config.Middleware{},
|
||||
Services: map[string]*config.Service{},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
desc: "one service with rule label and has a host exposed port",
|
||||
containers: []rancherData{
|
||||
{
|
||||
Name: "Test",
|
||||
Labels: map[string]string{
|
||||
"traefik.http.routers.Router1.rule": "Host(`foo.com`)",
|
||||
},
|
||||
Port: "12345:80/tcp",
|
||||
Containers: []string{"127.0.0.1"},
|
||||
Health: "",
|
||||
State: "",
|
||||
},
|
||||
},
|
||||
expected: &config.Configuration{
|
||||
TCP: &config.TCPConfiguration{
|
||||
Routers: map[string]*config.TCPRouter{},
|
||||
Services: map[string]*config.TCPService{},
|
||||
},
|
||||
HTTP: &config.HTTPConfiguration{
|
||||
Routers: map[string]*config.Router{
|
||||
"Router1": {
|
||||
Service: "Test",
|
||||
Rule: "Host(`foo.com`)",
|
||||
},
|
||||
},
|
||||
Middlewares: map[string]*config.Middleware{},
|
||||
Services: map[string]*config.Service{
|
||||
"Test": {
|
||||
LoadBalancer: &config.LoadBalancerService{
|
||||
Servers: []config.Server{
|
||||
{
|
||||
URL: "http://127.0.0.1:80",
|
||||
Weight: 1,
|
||||
},
|
||||
},
|
||||
Method: "wrr",
|
||||
PassHostHeader: true,
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
desc: "one service with non matching constraints",
|
||||
containers: []rancherData{
|
||||
{
|
||||
Name: "Test",
|
||||
Labels: map[string]string{
|
||||
"traefik.http.routers.Router1.rule": "Host(`foo.com`)",
|
||||
},
|
||||
Port: "12345:80/tcp",
|
||||
Containers: []string{"127.0.0.1"},
|
||||
Health: "",
|
||||
State: "",
|
||||
},
|
||||
},
|
||||
constraints: types.Constraints{
|
||||
&types.Constraint{
|
||||
Key: "tag",
|
||||
MustMatch: true,
|
||||
Regex: "bar",
|
||||
},
|
||||
},
|
||||
expected: &config.Configuration{
|
||||
TCP: &config.TCPConfiguration{
|
||||
Routers: map[string]*config.TCPRouter{},
|
||||
Services: map[string]*config.TCPService{},
|
||||
},
|
||||
HTTP: &config.HTTPConfiguration{
|
||||
Routers: map[string]*config.Router{},
|
||||
Middlewares: map[string]*config.Middleware{},
|
||||
Services: map[string]*config.Service{},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
desc: "one service with matching constraints",
|
||||
containers: []rancherData{
|
||||
{
|
||||
Name: "Test",
|
||||
Labels: map[string]string{
|
||||
"traefik.tags": "foo",
|
||||
},
|
||||
Port: "80/tcp",
|
||||
Containers: []string{"127.0.0.1"},
|
||||
Health: "",
|
||||
State: "",
|
||||
},
|
||||
},
|
||||
constraints: types.Constraints{
|
||||
&types.Constraint{
|
||||
Key: "tag",
|
||||
MustMatch: true,
|
||||
Regex: "foo",
|
||||
},
|
||||
},
|
||||
expected: &config.Configuration{
|
||||
TCP: &config.TCPConfiguration{
|
||||
Routers: map[string]*config.TCPRouter{},
|
||||
Services: map[string]*config.TCPService{},
|
||||
},
|
||||
HTTP: &config.HTTPConfiguration{
|
||||
Routers: map[string]*config.Router{
|
||||
"Test": {
|
||||
Service: "Test",
|
||||
Rule: "Host(`Test.traefik.wtf`)",
|
||||
},
|
||||
},
|
||||
Middlewares: map[string]*config.Middleware{},
|
||||
Services: map[string]*config.Service{
|
||||
"Test": {
|
||||
LoadBalancer: &config.LoadBalancerService{
|
||||
Servers: []config.Server{
|
||||
{
|
||||
URL: "http://127.0.0.1:80",
|
||||
Weight: 1,
|
||||
},
|
||||
},
|
||||
Method: "wrr",
|
||||
PassHostHeader: true,
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
desc: "Middlewares used in router",
|
||||
containers: []rancherData{
|
||||
{
|
||||
Name: "Test",
|
||||
Labels: map[string]string{
|
||||
"traefik.http.middlewares.Middleware1.basicauth.users": "test:$apr1$H6uskkkW$IgXLP6ewTrSuBkTrqE8wj/,test2:$apr1$d9hr9HBB$4HxwgUir3HP4EsggP/QNo0",
|
||||
"traefik.http.routers.Test.middlewares": "Middleware1",
|
||||
},
|
||||
Port: "80/tcp",
|
||||
Containers: []string{"127.0.0.1"},
|
||||
Health: "",
|
||||
State: "",
|
||||
},
|
||||
},
|
||||
expected: &config.Configuration{
|
||||
TCP: &config.TCPConfiguration{
|
||||
Routers: map[string]*config.TCPRouter{},
|
||||
Services: map[string]*config.TCPService{},
|
||||
},
|
||||
HTTP: &config.HTTPConfiguration{
|
||||
Routers: map[string]*config.Router{
|
||||
"Test": {
|
||||
Service: "Test",
|
||||
Rule: "Host(`Test.traefik.wtf`)",
|
||||
Middlewares: []string{"Middleware1"},
|
||||
},
|
||||
},
|
||||
Middlewares: map[string]*config.Middleware{
|
||||
"Middleware1": {
|
||||
BasicAuth: &config.BasicAuth{
|
||||
Users: []string{
|
||||
"test:$apr1$H6uskkkW$IgXLP6ewTrSuBkTrqE8wj/",
|
||||
"test2:$apr1$d9hr9HBB$4HxwgUir3HP4EsggP/QNo0",
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
Services: map[string]*config.Service{
|
||||
"Test": {
|
||||
LoadBalancer: &config.LoadBalancerService{
|
||||
Servers: []config.Server{
|
||||
{
|
||||
URL: "http://127.0.0.1:80",
|
||||
Weight: 1,
|
||||
},
|
||||
},
|
||||
Method: "wrr",
|
||||
PassHostHeader: true,
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
desc: "Port in labels",
|
||||
containers: []rancherData{
|
||||
{
|
||||
Name: "Test",
|
||||
Labels: map[string]string{
|
||||
"traefik.http.services.Test.loadbalancer.server.port": "80",
|
||||
},
|
||||
Port: "",
|
||||
Containers: []string{"127.0.0.1"},
|
||||
Health: "",
|
||||
State: "",
|
||||
},
|
||||
},
|
||||
expected: &config.Configuration{
|
||||
TCP: &config.TCPConfiguration{
|
||||
Routers: map[string]*config.TCPRouter{},
|
||||
Services: map[string]*config.TCPService{},
|
||||
},
|
||||
HTTP: &config.HTTPConfiguration{
|
||||
Routers: map[string]*config.Router{
|
||||
"Test": {
|
||||
Service: "Test",
|
||||
Rule: "Host(`Test.traefik.wtf`)",
|
||||
},
|
||||
},
|
||||
Middlewares: map[string]*config.Middleware{},
|
||||
Services: map[string]*config.Service{
|
||||
"Test": {
|
||||
LoadBalancer: &config.LoadBalancerService{
|
||||
Servers: []config.Server{
|
||||
{
|
||||
URL: "http://127.0.0.1:80",
|
||||
Weight: 1,
|
||||
},
|
||||
},
|
||||
Method: "wrr",
|
||||
PassHostHeader: true,
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
desc: "tcp with label",
|
||||
containers: []rancherData{
|
||||
{
|
||||
Name: "Test",
|
||||
Labels: map[string]string{
|
||||
"traefik.tcp.routers.foo.rule": "HostSNI(`foo.bar`)",
|
||||
"traefik.tcp.routers.foo.tls": "true",
|
||||
},
|
||||
Port: "80/tcp",
|
||||
Containers: []string{"127.0.0.1"},
|
||||
Health: "",
|
||||
State: "",
|
||||
},
|
||||
},
|
||||
expected: &config.Configuration{
|
||||
|
||||
TCP: &config.TCPConfiguration{
|
||||
Routers: map[string]*config.TCPRouter{
|
||||
"foo": {
|
||||
Service: "Test",
|
||||
Rule: "HostSNI(`foo.bar`)",
|
||||
TLS: &config.RouterTCPTLSConfig{},
|
||||
},
|
||||
},
|
||||
Services: map[string]*config.TCPService{
|
||||
"Test": {
|
||||
LoadBalancer: &config.TCPLoadBalancerService{
|
||||
Servers: []config.TCPServer{
|
||||
{
|
||||
Address: "127.0.0.1:80",
|
||||
Weight: 1,
|
||||
},
|
||||
},
|
||||
Method: "wrr",
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
HTTP: &config.HTTPConfiguration{
|
||||
Routers: map[string]*config.Router{},
|
||||
Middlewares: map[string]*config.Middleware{},
|
||||
Services: map[string]*config.Service{},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
desc: "tcp with label without rule",
|
||||
containers: []rancherData{
|
||||
{
|
||||
Name: "Test",
|
||||
Labels: map[string]string{
|
||||
"traefik.tcp.routers.foo.tls": "true",
|
||||
},
|
||||
Port: "80/tcp",
|
||||
Containers: []string{"127.0.0.1"},
|
||||
Health: "",
|
||||
State: "",
|
||||
},
|
||||
},
|
||||
expected: &config.Configuration{
|
||||
TCP: &config.TCPConfiguration{
|
||||
Routers: map[string]*config.TCPRouter{},
|
||||
Services: map[string]*config.TCPService{
|
||||
"Test": {
|
||||
LoadBalancer: &config.TCPLoadBalancerService{
|
||||
Servers: []config.TCPServer{
|
||||
{
|
||||
Address: "127.0.0.1:80",
|
||||
Weight: 1,
|
||||
},
|
||||
},
|
||||
Method: "wrr",
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
HTTP: &config.HTTPConfiguration{
|
||||
Routers: map[string]*config.Router{},
|
||||
Middlewares: map[string]*config.Middleware{},
|
||||
Services: map[string]*config.Service{},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
desc: "tcp with label and port",
|
||||
containers: []rancherData{
|
||||
{
|
||||
Name: "Test",
|
||||
Labels: map[string]string{
|
||||
"traefik.tcp.routers.foo.rule": "HostSNI(`foo.bar`)",
|
||||
"traefik.tcp.routers.foo.tls": "true",
|
||||
"traefik.tcp.services.foo.loadbalancer.server.port": "8080",
|
||||
},
|
||||
Port: "80/tcp",
|
||||
Containers: []string{"127.0.0.1"},
|
||||
Health: "",
|
||||
State: "",
|
||||
},
|
||||
},
|
||||
expected: &config.Configuration{
|
||||
TCP: &config.TCPConfiguration{
|
||||
Routers: map[string]*config.TCPRouter{
|
||||
"foo": {
|
||||
Service: "foo",
|
||||
Rule: "HostSNI(`foo.bar`)",
|
||||
TLS: &config.RouterTCPTLSConfig{},
|
||||
},
|
||||
},
|
||||
Services: map[string]*config.TCPService{
|
||||
"foo": {
|
||||
LoadBalancer: &config.TCPLoadBalancerService{
|
||||
Servers: []config.TCPServer{
|
||||
{
|
||||
Address: "127.0.0.1:8080",
|
||||
Weight: 1,
|
||||
},
|
||||
},
|
||||
Method: "wrr",
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
HTTP: &config.HTTPConfiguration{
|
||||
Routers: map[string]*config.Router{},
|
||||
Middlewares: map[string]*config.Middleware{},
|
||||
Services: map[string]*config.Service{},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
desc: "tcp with label and port and http service",
|
||||
containers: []rancherData{
|
||||
{
|
||||
Name: "Test",
|
||||
Labels: map[string]string{
|
||||
"traefik.tcp.routers.foo.rule": "HostSNI(`foo.bar`)",
|
||||
"traefik.tcp.routers.foo.tls": "true",
|
||||
"traefik.tcp.services.foo.loadbalancer.server.port": "8080",
|
||||
"traefik.http.services.Service1.loadbalancer.method": "drr",
|
||||
},
|
||||
Port: "80/tcp",
|
||||
Containers: []string{"127.0.0.1", "127.0.0.2"},
|
||||
Health: "",
|
||||
State: "",
|
||||
},
|
||||
},
|
||||
expected: &config.Configuration{
|
||||
TCP: &config.TCPConfiguration{
|
||||
Routers: map[string]*config.TCPRouter{
|
||||
"foo": {
|
||||
Service: "foo",
|
||||
Rule: "HostSNI(`foo.bar`)",
|
||||
TLS: &config.RouterTCPTLSConfig{},
|
||||
},
|
||||
},
|
||||
Services: map[string]*config.TCPService{
|
||||
"foo": {
|
||||
LoadBalancer: &config.TCPLoadBalancerService{
|
||||
Servers: []config.TCPServer{
|
||||
{
|
||||
Address: "127.0.0.1:8080",
|
||||
Weight: 1,
|
||||
},
|
||||
{
|
||||
Address: "127.0.0.2:8080",
|
||||
Weight: 1,
|
||||
},
|
||||
},
|
||||
Method: "wrr",
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
HTTP: &config.HTTPConfiguration{
|
||||
Routers: map[string]*config.Router{
|
||||
"Test": {
|
||||
Service: "Service1",
|
||||
Rule: "Host(`Test.traefik.wtf`)",
|
||||
},
|
||||
},
|
||||
Middlewares: map[string]*config.Middleware{},
|
||||
Services: map[string]*config.Service{
|
||||
"Service1": {
|
||||
LoadBalancer: &config.LoadBalancerService{
|
||||
Servers: []config.Server{
|
||||
{
|
||||
URL: "http://127.0.0.1:80",
|
||||
Weight: 1,
|
||||
},
|
||||
{
|
||||
URL: "http://127.0.0.2:80",
|
||||
Weight: 1,
|
||||
},
|
||||
},
|
||||
Method: "drr",
|
||||
PassHostHeader: true,
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
desc: "tcp with label for tcp service",
|
||||
containers: []rancherData{
|
||||
{
|
||||
Name: "Test",
|
||||
Labels: map[string]string{
|
||||
"traefik.tcp.services.foo.loadbalancer.server.port": "8080",
|
||||
},
|
||||
Port: "80/tcp",
|
||||
Containers: []string{"127.0.0.1"},
|
||||
Health: "",
|
||||
State: "",
|
||||
},
|
||||
},
|
||||
expected: &config.Configuration{
|
||||
TCP: &config.TCPConfiguration{
|
||||
Routers: map[string]*config.TCPRouter{},
|
||||
Services: map[string]*config.TCPService{
|
||||
"foo": {
|
||||
LoadBalancer: &config.TCPLoadBalancerService{
|
||||
Servers: []config.TCPServer{
|
||||
{
|
||||
Address: "127.0.0.1:8080",
|
||||
Weight: 1,
|
||||
},
|
||||
},
|
||||
Method: "wrr",
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
HTTP: &config.HTTPConfiguration{
|
||||
Routers: map[string]*config.Router{},
|
||||
Middlewares: map[string]*config.Middleware{},
|
||||
Services: map[string]*config.Service{},
|
||||
},
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
for _, test := range testCases {
|
||||
test := test
|
||||
|
||||
t.Run(test.desc, func(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
p := Provider{
|
||||
ExposedByDefault: true,
|
||||
DefaultRule: "Host(`{{ normalize .Name }}.traefik.wtf`)",
|
||||
EnableServiceHealthFilter: true,
|
||||
}
|
||||
|
||||
p.Constraints = test.constraints
|
||||
|
||||
err := p.Init()
|
||||
require.NoError(t, err)
|
||||
|
||||
for i := 0; i < len(test.containers); i++ {
|
||||
var err error
|
||||
test.containers[i].ExtraConf, err = p.getConfiguration(test.containers[i])
|
||||
require.NoError(t, err)
|
||||
}
|
||||
|
||||
configuration := p.buildConfiguration(context.Background(), test.containers)
|
||||
|
||||
assert.Equal(t, test.expected, configuration)
|
||||
})
|
||||
}
|
||||
}
|
||||
23
pkg/provider/rancher/label.go
Normal file
23
pkg/provider/rancher/label.go
Normal file
|
|
@ -0,0 +1,23 @@
|
|||
package rancher
|
||||
|
||||
import (
|
||||
"github.com/containous/traefik/pkg/provider/label"
|
||||
)
|
||||
|
||||
type configuration struct {
|
||||
Enable bool
|
||||
Tags []string
|
||||
}
|
||||
|
||||
func (p *Provider) getConfiguration(service rancherData) (configuration, error) {
|
||||
conf := configuration{
|
||||
Enable: p.ExposedByDefault,
|
||||
}
|
||||
|
||||
err := label.Decode(service.Labels, &conf, "traefik.rancher.", "traefik.enable", "traefik.tags")
|
||||
if err != nil {
|
||||
return configuration{}, err
|
||||
}
|
||||
|
||||
return conf, nil
|
||||
}
|
||||
221
pkg/provider/rancher/rancher.go
Normal file
221
pkg/provider/rancher/rancher.go
Normal file
|
|
@ -0,0 +1,221 @@
|
|||
package rancher
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
"text/template"
|
||||
"time"
|
||||
|
||||
"github.com/cenkalti/backoff"
|
||||
"github.com/containous/traefik/pkg/config"
|
||||
"github.com/containous/traefik/pkg/job"
|
||||
"github.com/containous/traefik/pkg/log"
|
||||
"github.com/containous/traefik/pkg/provider"
|
||||
"github.com/containous/traefik/pkg/safe"
|
||||
rancher "github.com/rancher/go-rancher-metadata/metadata"
|
||||
)
|
||||
|
||||
const (
|
||||
// DefaultTemplateRule The default template for the default rule.
|
||||
DefaultTemplateRule = "Host(`{{ normalize .Name }}`)"
|
||||
)
|
||||
|
||||
// Health
|
||||
const (
|
||||
healthy = "healthy"
|
||||
updatingHealthy = "updating-healthy"
|
||||
)
|
||||
|
||||
// State
|
||||
const (
|
||||
active = "active"
|
||||
running = "running"
|
||||
upgraded = "upgraded"
|
||||
upgrading = "upgrading"
|
||||
updatingActive = "updating-active"
|
||||
updatingRunning = "updating-running"
|
||||
)
|
||||
|
||||
var _ provider.Provider = (*Provider)(nil)
|
||||
|
||||
// Provider holds configurations of the provider.
|
||||
type Provider struct {
|
||||
provider.Constrainer `mapstructure:",squash" export:"true"`
|
||||
Watch bool `description:"Watch provider" export:"true"`
|
||||
DefaultRule string `description:"Default rule"`
|
||||
ExposedByDefault bool `description:"Expose containers by default" export:"true"`
|
||||
EnableServiceHealthFilter bool
|
||||
RefreshSeconds int
|
||||
defaultRuleTpl *template.Template
|
||||
IntervalPoll bool `description:"Poll the Rancher metadata service every 'rancher.refreshseconds' (less accurate)"`
|
||||
Prefix string `description:"Prefix used for accessing the Rancher metadata service"`
|
||||
}
|
||||
|
||||
type rancherData struct {
|
||||
Name string
|
||||
Labels map[string]string
|
||||
Containers []string
|
||||
Health string
|
||||
State string
|
||||
Port string
|
||||
ExtraConf configuration
|
||||
}
|
||||
|
||||
// Init the provider.
|
||||
func (p *Provider) Init() error {
|
||||
defaultRuleTpl, err := provider.MakeDefaultRuleTemplate(p.DefaultRule, nil)
|
||||
if err != nil {
|
||||
return fmt.Errorf("error while parsing default rule: %v", err)
|
||||
}
|
||||
|
||||
p.defaultRuleTpl = defaultRuleTpl
|
||||
return nil
|
||||
}
|
||||
|
||||
func (p *Provider) createClient(ctx context.Context) (rancher.Client, error) {
|
||||
metadataServiceURL := fmt.Sprintf("http://rancher-metadata.rancher.internal/%s", p.Prefix)
|
||||
client, err := rancher.NewClientAndWait(metadataServiceURL)
|
||||
if err != nil {
|
||||
log.FromContext(ctx).Errorf("Failed to create Rancher metadata service client: %v", err)
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return client, nil
|
||||
}
|
||||
|
||||
// Provide allows the rancher provider to provide configurations to traefik using the given configuration channel.
|
||||
func (p *Provider) Provide(configurationChan chan<- config.Message, pool *safe.Pool) error {
|
||||
pool.GoCtx(func(routineCtx context.Context) {
|
||||
ctxLog := log.With(routineCtx, log.Str(log.ProviderName, "rancher"))
|
||||
logger := log.FromContext(ctxLog)
|
||||
|
||||
operation := func() error {
|
||||
client, err := p.createClient(ctxLog)
|
||||
if err != nil {
|
||||
logger.Errorf("Failed to create the metadata client metadata service: %v", err)
|
||||
return err
|
||||
}
|
||||
|
||||
updateConfiguration := func(_ string) {
|
||||
stacks, err := client.GetStacks()
|
||||
if err != nil {
|
||||
logger.Errorf("Failed to query Rancher metadata service: %v", err)
|
||||
return
|
||||
}
|
||||
|
||||
rancherData := p.parseMetadataSourcedRancherData(ctxLog, stacks)
|
||||
|
||||
logger.Printf("Received Rancher data %+v", rancherData)
|
||||
|
||||
configuration := p.buildConfiguration(ctxLog, rancherData)
|
||||
configurationChan <- config.Message{
|
||||
ProviderName: "rancher",
|
||||
Configuration: configuration,
|
||||
}
|
||||
}
|
||||
updateConfiguration("init")
|
||||
|
||||
if p.Watch {
|
||||
if p.IntervalPoll {
|
||||
p.intervalPoll(ctxLog, client, updateConfiguration)
|
||||
} else {
|
||||
// Long polling should be favored for the most accurate configuration updates.
|
||||
// Holds the connection until there is either a change in the metadata repository or `p.RefreshSeconds` has elapsed.
|
||||
client.OnChangeCtx(ctxLog, p.RefreshSeconds, updateConfiguration)
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
notify := func(err error, time time.Duration) {
|
||||
logger.Errorf("Provider connection error %+v, retrying in %s", err, time)
|
||||
}
|
||||
err := backoff.RetryNotify(safe.OperationWithRecover(operation), backoff.WithContext(job.NewBackOff(backoff.NewExponentialBackOff()), ctxLog), notify)
|
||||
if err != nil {
|
||||
logger.Errorf("Cannot connect to Provider server: %+v", err)
|
||||
}
|
||||
})
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (p *Provider) intervalPoll(ctx context.Context, client rancher.Client, updateConfiguration func(string)) {
|
||||
ticker := time.NewTicker(time.Second * time.Duration(p.RefreshSeconds))
|
||||
defer ticker.Stop()
|
||||
|
||||
var version string
|
||||
for {
|
||||
select {
|
||||
case <-ticker.C:
|
||||
newVersion, err := client.GetVersion()
|
||||
if err != nil {
|
||||
log.FromContext(ctx).Errorf("Failed to create Rancher metadata service client: %v", err)
|
||||
} else if version != newVersion {
|
||||
version = newVersion
|
||||
updateConfiguration(version)
|
||||
}
|
||||
case <-ctx.Done():
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (p *Provider) parseMetadataSourcedRancherData(ctx context.Context, stacks []rancher.Stack) (rancherDataList []rancherData) {
|
||||
for _, stack := range stacks {
|
||||
for _, service := range stack.Services {
|
||||
ctxSvc := log.With(ctx, log.Str("stack", stack.Name), log.Str("service", service.Name))
|
||||
logger := log.FromContext(ctxSvc)
|
||||
|
||||
servicePort := ""
|
||||
if len(service.Ports) > 0 {
|
||||
servicePort = service.Ports[0]
|
||||
}
|
||||
for _, port := range service.Ports {
|
||||
logger.Debugf("Set Port %s", port)
|
||||
}
|
||||
|
||||
var containerIPAddresses []string
|
||||
for _, container := range service.Containers {
|
||||
if containerFilter(ctxSvc, container.Name, container.HealthState, container.State) {
|
||||
containerIPAddresses = append(containerIPAddresses, container.PrimaryIp)
|
||||
}
|
||||
}
|
||||
|
||||
service := rancherData{
|
||||
Name: service.Name + "/" + stack.Name,
|
||||
State: service.State,
|
||||
Labels: service.Labels,
|
||||
Port: servicePort,
|
||||
Containers: containerIPAddresses,
|
||||
}
|
||||
|
||||
extraConf, err := p.getConfiguration(service)
|
||||
if err != nil {
|
||||
logger.Errorf("Skip container %s: %v", service.Name, err)
|
||||
continue
|
||||
}
|
||||
|
||||
service.ExtraConf = extraConf
|
||||
|
||||
rancherDataList = append(rancherDataList, service)
|
||||
}
|
||||
}
|
||||
return rancherDataList
|
||||
}
|
||||
|
||||
func containerFilter(ctx context.Context, name, healthState, state string) bool {
|
||||
logger := log.FromContext(ctx)
|
||||
|
||||
if healthState != "" && healthState != healthy && healthState != updatingHealthy {
|
||||
logger.Debugf("Filtering container %s with healthState of %s", name, healthState)
|
||||
return false
|
||||
}
|
||||
|
||||
if state != "" && state != running && state != updatingRunning && state != upgraded {
|
||||
logger.Debugf("Filtering container %s with state of %s", name, state)
|
||||
return false
|
||||
}
|
||||
|
||||
return true
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue