package consulcatalog import ( "context" "errors" "fmt" "net" "github.com/containous/traefik/v2/pkg/config/dynamic" "github.com/containous/traefik/v2/pkg/config/label" "github.com/containous/traefik/v2/pkg/log" "github.com/containous/traefik/v2/pkg/provider" "github.com/containous/traefik/v2/pkg/provider/constraints" "github.com/hashicorp/consul/api" ) func (p *Provider) buildConfiguration(ctx context.Context, items []itemData) *dynamic.Configuration { configurations := make(map[string]*dynamic.Configuration) for _, item := range items { svcName := item.Name + "-" + item.ID ctxSvc := log.With(ctx, log.Str("serviceName", svcName)) if !p.keepContainer(ctxSvc, item) { continue } logger := log.FromContext(ctxSvc) confFromLabel, err := label.DecodeConfiguration(item.Labels) if err != nil { logger.Error(err) continue } if len(confFromLabel.TCP.Routers) > 0 || len(confFromLabel.TCP.Services) > 0 { err := p.buildTCPServiceConfiguration(ctxSvc, item, confFromLabel.TCP) if err != nil { logger.Error(err) continue } provider.BuildTCPRouterConfiguration(ctxSvc, confFromLabel.TCP) if len(confFromLabel.HTTP.Routers) == 0 && len(confFromLabel.HTTP.Middlewares) == 0 && len(confFromLabel.HTTP.Services) == 0 { configurations[svcName] = confFromLabel continue } } err = p.buildServiceConfiguration(ctxSvc, item, confFromLabel.HTTP) if err != nil { logger.Error(err) continue } model := struct { Name string Labels map[string]string }{ Name: item.Name, Labels: item.Labels, } provider.BuildRouterConfiguration(ctx, confFromLabel.HTTP, item.Name, p.defaultRuleTpl, model) configurations[svcName] = confFromLabel } return provider.Merge(ctx, configurations) } func (p *Provider) keepContainer(ctx context.Context, item itemData) bool { logger := log.FromContext(ctx) if !item.ExtraConf.Enable { logger.Debug("Filtering disabled item") return false } matches, err := constraints.Match(item.Labels, p.Constraints) if err != nil { logger.Errorf("Error matching constraints expression: %v", err) return false } if !matches { logger.Debugf("Container pruned by constraint expression: %q", p.Constraints) return false } if item.Status != api.HealthPassing && item.Status != api.HealthWarning { logger.Debug("Filtering unhealthy or starting item") return false } return true } func (p *Provider) buildTCPServiceConfiguration(ctx context.Context, item itemData, configuration *dynamic.TCPConfiguration) error { if len(configuration.Services) == 0 { configuration.Services = make(map[string]*dynamic.TCPService) lb := &dynamic.TCPServersLoadBalancer{} lb.SetDefaults() configuration.Services[item.Name] = &dynamic.TCPService{ LoadBalancer: lb, } } for name, service := range configuration.Services { ctxSvc := log.With(ctx, log.Str(log.ServiceName, name)) err := p.addServerTCP(ctxSvc, item, service.LoadBalancer) if err != nil { return err } } return nil } func (p *Provider) buildServiceConfiguration(ctx context.Context, item itemData, configuration *dynamic.HTTPConfiguration) error { if len(configuration.Services) == 0 { configuration.Services = make(map[string]*dynamic.Service) lb := &dynamic.ServersLoadBalancer{} lb.SetDefaults() configuration.Services[item.Name] = &dynamic.Service{ LoadBalancer: lb, } } for name, service := range configuration.Services { ctxSvc := log.With(ctx, log.Str(log.ServiceName, name)) err := p.addServer(ctxSvc, item, service.LoadBalancer) if err != nil { return err } } return nil } func (p *Provider) addServerTCP(ctx context.Context, item itemData, loadBalancer *dynamic.TCPServersLoadBalancer) error { if loadBalancer == nil { return errors.New("load-balancer is not defined") } if len(loadBalancer.Servers) == 0 { loadBalancer.Servers = []dynamic.TCPServer{{}} } var port string if item.Port != "" { port = item.Port loadBalancer.Servers[0].Port = "" } if port == "" { return errors.New("port is missing") } if item.Address == "" { return errors.New("address is missing") } loadBalancer.Servers[0].Address = net.JoinHostPort(item.Address, port) return nil } func (p *Provider) addServer(ctx context.Context, item itemData, loadBalancer *dynamic.ServersLoadBalancer) error { if loadBalancer == nil { return errors.New("load-balancer is not defined") } var port string if len(loadBalancer.Servers) > 0 { port = loadBalancer.Servers[0].Port } if len(loadBalancer.Servers) == 0 { server := dynamic.Server{} server.SetDefaults() loadBalancer.Servers = []dynamic.Server{server} } if item.Port != "" { port = item.Port loadBalancer.Servers[0].Port = "" } if port == "" { return errors.New("port is missing") } if item.Address == "" { return errors.New("address is missing") } loadBalancer.Servers[0].URL = fmt.Sprintf("%s://%s", loadBalancer.Servers[0].Scheme, net.JoinHostPort(item.Address, port)) loadBalancer.Servers[0].Scheme = "" return nil }