156 lines
3.6 KiB
Go
156 lines
3.6 KiB
Go
package aggregator
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import (
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"encoding/json"
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"github.com/traefik/traefik/v2/pkg/config/dynamic"
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"github.com/traefik/traefik/v2/pkg/config/static"
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"github.com/traefik/traefik/v2/pkg/log"
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"github.com/traefik/traefik/v2/pkg/provider"
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"github.com/traefik/traefik/v2/pkg/provider/file"
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"github.com/traefik/traefik/v2/pkg/provider/traefik"
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"github.com/traefik/traefik/v2/pkg/safe"
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)
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// ProviderAggregator aggregates providers.
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type ProviderAggregator struct {
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internalProvider provider.Provider
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fileProvider provider.Provider
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providers []provider.Provider
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}
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// NewProviderAggregator returns an aggregate of all the providers configured in the static configuration.
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func NewProviderAggregator(conf static.Providers) ProviderAggregator {
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p := ProviderAggregator{}
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if conf.File != nil {
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p.quietAddProvider(conf.File)
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}
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if conf.Docker != nil {
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p.quietAddProvider(conf.Docker)
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}
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if conf.Marathon != nil {
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p.quietAddProvider(conf.Marathon)
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}
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if conf.Rest != nil {
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p.quietAddProvider(conf.Rest)
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}
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if conf.KubernetesIngress != nil {
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p.quietAddProvider(conf.KubernetesIngress)
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}
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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.KubernetesGateway != nil {
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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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if conf.ConsulCatalog != nil {
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p.quietAddProvider(conf.ConsulCatalog)
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}
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if conf.Consul != nil {
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p.quietAddProvider(conf.Consul)
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}
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if conf.Etcd != nil {
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p.quietAddProvider(conf.Etcd)
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}
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if conf.ZooKeeper != nil {
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p.quietAddProvider(conf.ZooKeeper)
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}
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if conf.Redis != nil {
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p.quietAddProvider(conf.Redis)
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}
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if conf.HTTP != nil {
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p.quietAddProvider(conf.HTTP)
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}
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return p
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}
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func (p *ProviderAggregator) quietAddProvider(provider provider.Provider) {
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err := p.AddProvider(provider)
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if err != nil {
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log.WithoutContext().Errorf("Error while initializing provider %T: %v", provider, err)
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}
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}
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// AddProvider adds a provider in the providers map.
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func (p *ProviderAggregator) AddProvider(provider provider.Provider) error {
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err := provider.Init()
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if err != nil {
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return err
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}
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switch provider.(type) {
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case *file.Provider:
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p.fileProvider = provider
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case *traefik.Provider:
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p.internalProvider = provider
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default:
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p.providers = append(p.providers, provider)
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}
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return nil
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}
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// Init the provider.
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func (p ProviderAggregator) Init() error {
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return nil
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}
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// Provide calls the provide method of every providers.
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func (p ProviderAggregator) Provide(configurationChan chan<- dynamic.Message, pool *safe.Pool) error {
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if p.fileProvider != nil {
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launchProvider(configurationChan, pool, p.fileProvider)
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}
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for _, prd := range p.providers {
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prd := prd
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safe.Go(func() {
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launchProvider(configurationChan, pool, prd)
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})
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}
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// internal provider must be the last because we use it to know if all the providers are loaded.
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// ConfigurationWatcher will wait for this requiredProvider before applying configurations.
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if p.internalProvider != nil {
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launchProvider(configurationChan, pool, p.internalProvider)
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}
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return nil
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}
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func launchProvider(configurationChan chan<- dynamic.Message, pool *safe.Pool, prd provider.Provider) {
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jsonConf, err := json.Marshal(prd)
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if err != nil {
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log.WithoutContext().Debugf("Cannot marshal the provider configuration %T: %v", prd, err)
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}
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log.WithoutContext().Infof("Starting provider %T %s", prd, jsonConf)
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currentProvider := prd
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err = currentProvider.Provide(configurationChan, pool)
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if err != nil {
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log.WithoutContext().Errorf("Cannot start the provider %T: %v", prd, err)
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}
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}
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