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Homogenization of templates: Eureka

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This commit is contained in:
Ludovic Fernandez 2018-02-13 09:20:04 +01:00 • committed by Traefiker Bot
parent 17e85e31cd
commit abdcb9e332
7 changed files with 115 additions and 88 deletions
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48
provider/eureka/eureka.go
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@ -1,9 +1,12 @@
package eureka
import (
"io/ioutil"
"time"
"github.com/ArthurHlt/go-eureka-client/eureka"
"github.com/cenk/backoff"
"github.com/containous/flaeg"
"github.com/containous/traefik/job"
"github.com/containous/traefik/log"
"github.com/containous/traefik/provider"
@ -14,16 +17,25 @@ import (
// Provider holds configuration of the Provider provider.
type Provider struct {
provider.BaseProvider `mapstructure:",squash" export:"true"`
Endpoint string `description:"Eureka server endpoint"`
Delay string `description:"Override default configuration time between refresh" export:"true"`
Endpoint string `description:"Eureka server endpoint"`
Delay flaeg.Duration `description:"Override default configuration time between refresh" export:"true"`
}
// Provide allows the eureka provider to provide configurations to traefik
// using the given configuration channel.
func (p *Provider) Provide(configurationChan chan<- types.ConfigMessage, pool *safe.Pool, _ types.Constraints) error {
eureka.GetLogger().SetOutput(ioutil.Discard)
operation := func() error {
configuration, err := p.buildConfiguration()
client := eureka.NewClient([]string{p.Endpoint})
applications, err := client.GetApplications()
if err != nil {
log.Errorf("Failed to retrieve applications, error: %s", err)
return err
}
configuration, err := p.buildConfiguration(applications)
if err != nil {
log.Errorf("Failed to build configuration for Provider, error: %s", err)
return err
@ -34,25 +46,18 @@ func (p *Provider) Provide(configurationChan chan<- types.ConfigMessage, pool *s
Configuration: configuration,
}
var delay time.Duration
if len(p.Delay) > 0 {
var err error
delay, err = time.ParseDuration(p.Delay)
if err != nil {
log.Errorf("Failed to parse delay for Provider, error: %s", err)
return err
}
} else {
delay = time.Second * 30
}
ticker := time.NewTicker(delay)
ticker := time.NewTicker(time.Duration(p.Delay))
safe.Go(func() {
for t := range ticker.C {
log.Debugf("Refreshing Provider %s", t.String())
configuration, err := p.buildConfiguration()
applications, err := client.GetApplications()
if err != nil {
log.Errorf("Failed to retrieve applications, error: %s", err)
continue
}
configuration, err := p.buildConfiguration(applications)
if err != nil {
log.Errorf("Failed to refresh Provider configuration, error: %s", err)
continue
@ -67,9 +72,6 @@ func (p *Provider) Provide(configurationChan chan<- types.ConfigMessage, pool *s
return nil
}
notify := func(err error, time time.Duration) {
log.Errorf("Provider connection error %+v, retrying in %s", err, time)
}
err := backoff.RetryNotify(operation, job.NewBackOff(backoff.NewExponentialBackOff()), notify)
if err != nil {
log.Errorf("Cannot connect to Provider server %+v", err)
@ -77,3 +79,7 @@ func (p *Provider) Provide(configurationChan chan<- types.ConfigMessage, pool *s
}
return nil
}
func notify(err error, time time.Duration) {
log.Errorf("Provider connection error %+v, retrying in %s", err, time)
}