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
237
pkg/provider/rancher/config.go
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237
pkg/provider/rancher/config.go
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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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