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kubernetes ingress rewrite-target implementation

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* Adding support for `ingress.kubernetes.io/rewrite-target`

We create a rule using the `PathPrefixStrip` to trim out the bit in the rewrite rule.
This commit is contained in:
Michael Laccetti 2017-07-07 15:27:54 -04:00 • committed by Ludovic Fernandez
parent dbf6161fa1
commit 41dd124a4b
2 changed files with 83 additions and 13 deletions
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35
provider/kubernetes/kubernetes.go
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@ -29,11 +29,13 @@ var _ provider.Provider = (*Provider)(nil)
const (
annotationFrontendRuleType = "traefik.frontend.rule.type"
ruleTypePathPrefix = "PathPrefix"
ruleTypeReplacePath = "ReplacePath"
annotationKubernetesIngressClass = "kubernetes.io/ingress.class"
annotationKubernetesAuthRealm = "ingress.kubernetes.io/auth-realm"
annotationKubernetesAuthType = "ingress.kubernetes.io/auth-type"
annotationKubernetesAuthSecret = "ingress.kubernetes.io/auth-secret"
annotationKubernetesRewriteTarget = "ingress.kubernetes.io/rewrite-target"
annotationKubernetesWhitelistSourceRange = "ingress.kubernetes.io/whitelist-source-range"
)
@ -153,6 +155,7 @@ func (p *Provider) loadIngresses(k8sClient Client) (*types.Configuration, error)
log.Warn("Error in ingress: HTTP is nil")
continue
}
for _, pa := range r.HTTP.Paths {
if _, exists := templateObjects.Backends[r.Host+pa.Path]; !exists {
templateObjects.Backends[r.Host+pa.Path] = &types.Backend{
@ -213,14 +216,10 @@ func (p *Provider) loadIngresses(k8sClient Client) (*types.Configuration, error)
}
}
if len(pa.Path) > 0 {
ruleType := i.Annotations[annotationFrontendRuleType]
if ruleType == "" {
ruleType = ruleTypePathPrefix
}
rule := getRuleForPath(pa, i)
if rule != "" {
templateObjects.Frontends[r.Host+pa.Path].Routes[pa.Path] = types.Route{
Rule: ruleType + ":" + pa.Path,
Rule: rule,
}
}
@ -241,9 +240,11 @@ func (p *Provider) loadIngresses(k8sClient Client) (*types.Configuration, error)
Expression: expression,
}
}
if service.Annotations["traefik.backend.loadbalancer.method"] == "drr" {
templateObjects.Backends[r.Host+pa.Path].LoadBalancer.Method = "drr"
}
if service.Annotations["traefik.backend.loadbalancer.sticky"] == "true" {
templateObjects.Backends[r.Host+pa.Path].LoadBalancer.Sticky = true
}
@ -254,6 +255,7 @@ func (p *Provider) loadIngresses(k8sClient Client) (*types.Configuration, error)
if port.Port == 443 {
protocol = "https"
}
if service.Spec.Type == "ExternalName" {
url := protocol + "://" + service.Spec.ExternalName
name := url
@ -302,6 +304,25 @@ func (p *Provider) loadIngresses(k8sClient Client) (*types.Configuration, error)
return &templateObjects, nil
}
func getRuleForPath(pa v1beta1.HTTPIngressPath, i *v1beta1.Ingress) string {
if len(pa.Path) == 0 {
return ""
}
ruleType := i.Annotations[annotationFrontendRuleType]
if ruleType == "" {
ruleType = ruleTypePathPrefix
}
rule := ruleType + ":" + pa.Path
if rewriteTarget := i.Annotations[annotationKubernetesRewriteTarget]; rewriteTarget != "" {
rule = ruleTypeReplacePath + ":" + rewriteTarget
}
return rule
}
func handleBasicAuthConfig(i *v1beta1.Ingress, k8sClient Client) ([]string, error) {
authType, exists := i.Annotations[annotationKubernetesAuthType]
if !exists {