Remove Rancher v1 provider
This commit is contained in:
Tom Moulard
GitHub
parent
7129f03dc9
commit
2ad1fd725a
66 changed files with 10 additions and 3316 deletions
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@ -100,10 +100,6 @@ func NewProviderAggregator(conf static.Providers) ProviderAggregator {
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p.quietAddProvider(conf.KubernetesGateway)
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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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if conf.Ecs != nil {
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p.quietAddProvider(conf.Ecs)
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}
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@ -1,299 +0,0 @@
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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/rs/zerolog/log"
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"github.com/traefik/traefik/v2/pkg/config/dynamic"
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"github.com/traefik/traefik/v2/pkg/config/label"
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"github.com/traefik/traefik/v2/pkg/provider"
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"github.com/traefik/traefik/v2/pkg/provider/constraints"
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)
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func (p *Provider) buildConfiguration(ctx context.Context, services []rancherData) *dynamic.Configuration {
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configurations := make(map[string]*dynamic.Configuration)
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for _, service := range services {
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logger := log.Ctx(ctx).With().Str("service", service.Name).Logger()
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ctxService := logger.WithContext(ctx)
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if !p.keepService(ctx, service) {
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continue
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}
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confFromLabel, err := label.DecodeConfiguration(service.Labels)
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if err != nil {
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logger.Error().Err(err).Send()
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continue
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}
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var tcpOrUDP bool
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if len(confFromLabel.TCP.Routers) > 0 || len(confFromLabel.TCP.Services) > 0 {
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tcpOrUDP = true
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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(err).Send()
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continue
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}
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provider.BuildTCPRouterConfiguration(ctxService, confFromLabel.TCP)
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}
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if len(confFromLabel.UDP.Routers) > 0 || len(confFromLabel.UDP.Services) > 0 {
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tcpOrUDP = true
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err := p.buildUDPServiceConfiguration(ctxService, service, confFromLabel.UDP)
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if err != nil {
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logger.Error().Err(err).Send()
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continue
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}
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provider.BuildUDPRouterConfiguration(ctxService, confFromLabel.UDP)
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}
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if tcpOrUDP && 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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err = p.buildServiceConfiguration(ctx, service, confFromLabel.HTTP)
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if err != nil {
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logger.Error().Err(err).Send()
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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 *dynamic.TCPConfiguration) error {
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serviceName := service.Name
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if len(configuration.Services) == 0 {
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configuration.Services = map[string]*dynamic.TCPService{
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serviceName: {
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LoadBalancer: new(dynamic.TCPServersLoadBalancer),
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},
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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) buildUDPServiceConfiguration(ctx context.Context, service rancherData, configuration *dynamic.UDPConfiguration) 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]*dynamic.UDPService)
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lb := &dynamic.UDPServersLoadBalancer{}
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configuration.Services[serviceName] = &dynamic.UDPService{
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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.addServerUDP(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 *dynamic.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]*dynamic.Service)
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lb := &dynamic.ServersLoadBalancer{}
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lb.SetDefaults()
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configuration.Services[serviceName] = &dynamic.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.Ctx(ctx)
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if !service.ExtraConf.Enable {
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logger.Debug().Msg("Filtering disabled service")
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return false
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}
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matches, err := constraints.MatchLabels(service.Labels, p.Constraints)
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if err != nil {
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logger.Error().Err(err).Msg("Error matching constraint expression")
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return false
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}
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if !matches {
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logger.Debug().Msgf("Service pruned by constraint expression: %q", p.Constraints)
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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.Debug().Msgf("Filtering service %s with healthState of %s", 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.Debug().Msgf("Filtering service %s with state of %s", 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 *dynamic.TCPServersLoadBalancer) error {
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log.Ctx(ctx).Debug().Msgf("Trying to add servers for service %s", service.Name)
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if loadBalancer == nil {
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return errors.New("load-balancer is not defined")
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}
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if len(loadBalancer.Servers) == 0 {
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loadBalancer.Servers = []dynamic.TCPServer{{}}
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}
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port := loadBalancer.Servers[0].Port
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loadBalancer.Servers[0].Port = ""
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if port == "" {
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port = getServicePort(service)
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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 []dynamic.TCPServer
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for _, containerIP := range service.Containers {
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servers = append(servers, dynamic.TCPServer{
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Address: net.JoinHostPort(containerIP, port),
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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) addServerUDP(ctx context.Context, service rancherData, loadBalancer *dynamic.UDPServersLoadBalancer) error {
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log.Ctx(ctx).Debug().Msgf("Trying to add servers for service %s", service.Name)
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if loadBalancer == nil {
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return errors.New("load-balancer is not defined")
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}
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if len(loadBalancer.Servers) == 0 {
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loadBalancer.Servers = []dynamic.UDPServer{{}}
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}
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port := loadBalancer.Servers[0].Port
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loadBalancer.Servers[0].Port = ""
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if port == "" {
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port = getServicePort(service)
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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 []dynamic.UDPServer
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for _, containerIP := range service.Containers {
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servers = append(servers, dynamic.UDPServer{
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Address: net.JoinHostPort(containerIP, port),
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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 *dynamic.ServersLoadBalancer) error {
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log.Ctx(ctx).Debug().Msgf("Trying to add servers for service %s", service.Name)
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if loadBalancer == nil {
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return errors.New("load-balancer is not defined")
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}
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if len(loadBalancer.Servers) == 0 {
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server := dynamic.Server{}
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server.SetDefaults()
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loadBalancer.Servers = []dynamic.Server{server}
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}
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port := loadBalancer.Servers[0].Port
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loadBalancer.Servers[0].Port = ""
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if port == "" {
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port = getServicePort(service)
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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 []dynamic.Server
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for _, containerIP := range service.Containers {
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servers = append(servers, dynamic.Server{
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URL: fmt.Sprintf("%s://%s", loadBalancer.Servers[0].Scheme, net.JoinHostPort(containerIP, port)),
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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 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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File diff suppressed because it is too large
Load diff
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@ -1,22 +0,0 @@
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package rancher
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import (
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"github.com/traefik/traefik/v2/pkg/config/label"
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)
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type configuration struct {
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Enable bool
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}
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func (p *Provider) getConfiguration(service rancherData) (configuration, error) {
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conf := configuration{
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Enable: p.ExposedByDefault,
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}
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err := label.Decode(service.Labels, &conf, "traefik.rancher.", "traefik.enable")
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if err != nil {
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return configuration{}, err
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}
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return conf, nil
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}
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@ -1,232 +0,0 @@
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package rancher
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import (
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"context"
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"fmt"
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"text/template"
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"time"
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"github.com/cenkalti/backoff/v4"
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rancher "github.com/rancher/go-rancher-metadata/metadata"
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"github.com/rs/zerolog/log"
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"github.com/traefik/traefik/v2/pkg/config/dynamic"
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"github.com/traefik/traefik/v2/pkg/job"
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"github.com/traefik/traefik/v2/pkg/logs"
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"github.com/traefik/traefik/v2/pkg/provider"
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"github.com/traefik/traefik/v2/pkg/safe"
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)
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const (
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// DefaultTemplateRule The default template for the default rule.
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DefaultTemplateRule = "Host(`{{ normalize .Name }}`)"
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)
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// Health.
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const (
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healthy = "healthy"
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updatingHealthy = "updating-healthy"
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)
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// States.
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const (
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active = "active"
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running = "running"
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upgraded = "upgraded"
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upgrading = "upgrading"
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updatingActive = "updating-active"
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updatingRunning = "updating-running"
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)
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var _ provider.Provider = (*Provider)(nil)
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// Provider holds configurations of the provider.
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type Provider struct {
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Constraints string `description:"Constraints is an expression that Traefik matches against the container's labels to determine whether to create any route for that container." json:"constraints,omitempty" toml:"constraints,omitempty" yaml:"constraints,omitempty" export:"true"`
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Watch bool `description:"Watch provider." json:"watch,omitempty" toml:"watch,omitempty" yaml:"watch,omitempty" export:"true"`
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DefaultRule string `description:"Default rule." json:"defaultRule,omitempty" toml:"defaultRule,omitempty" yaml:"defaultRule,omitempty"`
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ExposedByDefault bool `description:"Expose containers by default." json:"exposedByDefault,omitempty" toml:"exposedByDefault,omitempty" yaml:"exposedByDefault,omitempty" export:"true"`
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EnableServiceHealthFilter bool `description:"Filter services with unhealthy states and inactive states." json:"enableServiceHealthFilter,omitempty" toml:"enableServiceHealthFilter,omitempty" yaml:"enableServiceHealthFilter,omitempty" export:"true"`
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RefreshSeconds int `description:"Defines the polling interval in seconds." json:"refreshSeconds,omitempty" toml:"refreshSeconds,omitempty" yaml:"refreshSeconds,omitempty" export:"true"`
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IntervalPoll bool `description:"Poll the Rancher metadata service every 'rancher.refreshseconds' (less accurate)." json:"intervalPoll,omitempty" toml:"intervalPoll,omitempty" yaml:"intervalPoll,omitempty" export:"true"`
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Prefix string `description:"Prefix used for accessing the Rancher metadata service." json:"prefix,omitempty" toml:"prefix,omitempty" yaml:"prefix,omitempty"`
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defaultRuleTpl *template.Template
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}
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// SetDefaults sets the default values.
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func (p *Provider) SetDefaults() {
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p.Watch = true
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p.ExposedByDefault = true
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p.EnableServiceHealthFilter = true
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p.RefreshSeconds = 15
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p.DefaultRule = DefaultTemplateRule
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p.Prefix = "latest"
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}
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type rancherData struct {
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Name string
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Labels map[string]string
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Containers []string
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Health string
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State string
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Port string
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ExtraConf configuration
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}
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// Init the provider.
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func (p *Provider) Init() error {
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defaultRuleTpl, err := provider.MakeDefaultRuleTemplate(p.DefaultRule, nil)
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if err != nil {
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return fmt.Errorf("error while parsing default rule: %w", err)
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}
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p.defaultRuleTpl = defaultRuleTpl
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return nil
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}
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func (p *Provider) createClient(ctx context.Context) (rancher.Client, error) {
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metadataServiceURL := fmt.Sprintf("http://rancher-metadata.rancher.internal/%s", p.Prefix)
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client, err := rancher.NewClientAndWait(metadataServiceURL)
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if err != nil {
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log.Ctx(ctx).Error().Err(err).Msg("Failed to create Rancher metadata service client")
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return nil, err
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}
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return client, nil
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}
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// Provide allows the rancher provider to provide configurations to traefik using the given configuration channel.
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func (p *Provider) Provide(configurationChan chan<- dynamic.Message, pool *safe.Pool) error {
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pool.GoCtx(func(routineCtx context.Context) {
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logger := log.Ctx(routineCtx).With().Str(logs.ProviderName, "rancher").Logger()
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ctxLog := logger.WithContext(routineCtx)
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operation := func() error {
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client, err := p.createClient(ctxLog)
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if err != nil {
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logger.Error().Err(err).Msg("Failed to create the metadata client metadata service")
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return err
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}
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updateConfiguration := func(_ string) {
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stacks, err := client.GetStacks()
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if err != nil {
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logger.Error().Err(err).Msg("Failed to query Rancher metadata service")
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return
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}
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rancherData := p.parseMetadataSourcedRancherData(ctxLog, stacks)
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logger.Printf("Received Rancher data %+v", rancherData)
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configuration := p.buildConfiguration(ctxLog, rancherData)
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configurationChan <- dynamic.Message{
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ProviderName: "rancher",
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Configuration: configuration,
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}
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}
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updateConfiguration("init")
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if p.Watch {
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if p.IntervalPoll {
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p.intervalPoll(ctxLog, client, updateConfiguration)
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} else {
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// Long polling should be favored for the most accurate configuration updates.
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// Holds the connection until there is either a change in the metadata repository or `p.RefreshSeconds` has elapsed.
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client.OnChangeCtx(ctxLog, p.RefreshSeconds, updateConfiguration)
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}
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}
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return nil
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}
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notify := func(err error, time time.Duration) {
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logger.Error().Err(err).Msgf("Provider error, retrying in %s", time)
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}
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err := backoff.RetryNotify(safe.OperationWithRecover(operation), backoff.WithContext(job.NewBackOff(backoff.NewExponentialBackOff()), ctxLog), notify)
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if err != nil {
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logger.Error().Err(err).Msg("Cannot retrieve data")
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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) intervalPoll(ctx context.Context, client rancher.Client, updateConfiguration func(string)) {
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ticker := time.NewTicker(time.Duration(p.RefreshSeconds) * time.Second)
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defer ticker.Stop()
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var version string
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for {
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select {
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case <-ticker.C:
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newVersion, err := client.GetVersion()
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if err != nil {
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log.Ctx(ctx).Error().Err(err).Msg("Failed to create Rancher metadata service client")
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} 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 {
|
||||
logger := log.Ctx(ctx).With().Str("stack", stack.Name).Str("service", service.Name).Logger()
|
||||
ctxSvc := logger.WithContext(ctx)
|
||||
|
||||
servicePort := ""
|
||||
if len(service.Ports) > 0 {
|
||||
servicePort = service.Ports[0]
|
||||
}
|
||||
for _, port := range service.Ports {
|
||||
logger.Debug().Msgf("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.Error().Err(err).Msgf("Skip container %s", service.Name)
|
||||
continue
|
||||
}
|
||||
|
||||
service.ExtraConf = extraConf
|
||||
|
||||
rancherDataList = append(rancherDataList, service)
|
||||
}
|
||||
}
|
||||
return rancherDataList
|
||||
}
|
||||
|
||||
func containerFilter(ctx context.Context, name, healthState, state string) bool {
|
||||
logger := log.Ctx(ctx)
|
||||
|
||||
if healthState != "" && healthState != healthy && healthState != updatingHealthy {
|
||||
logger.Debug().Msgf("Filtering container %s with healthState of %s", name, healthState)
|
||||
return false
|
||||
}
|
||||
|
||||
if state != "" && state != running && state != updatingRunning && state != upgraded {
|
||||
logger.Debug().Msgf("Filtering container %s with state of %s", name, state)
|
||||
return false
|
||||
}
|
||||
|
||||
return true
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue