111 lines
2.6 KiB
Go
111 lines
2.6 KiB
Go
package aggregator
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import (
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"encoding/json"
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"github.com/containous/traefik/pkg/config"
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"github.com/containous/traefik/pkg/config/static"
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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/file"
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"github.com/containous/traefik/pkg/safe"
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)
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// ProviderAggregator aggregates providers.
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type ProviderAggregator struct {
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fileProvider *file.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.Kubernetes != nil {
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p.quietAddProvider(conf.Kubernetes)
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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.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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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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if fileProvider, ok := provider.(*file.Provider); ok {
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p.fileProvider = fileProvider
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} else {
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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<- config.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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return nil
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}
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func launchProvider(configurationChan chan<- config.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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