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bind.go
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bind.go
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package servicebroker
import (
"errors"
"net/http"
"strconv"
"strings"
"github.com/openshift/origin/pkg/openservicebroker/api"
templateapi "github.com/openshift/origin/pkg/template/api"
kapi "k8s.io/kubernetes/pkg/api"
kerrors "k8s.io/kubernetes/pkg/api/errors"
"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/typed/core/internalversion"
"k8s.io/kubernetes/pkg/labels"
"k8s.io/kubernetes/pkg/selection"
)
// copied from vendor/k8s.io/kubernetes/pkg/kubelet/envvars/envvars.go
// TODO: when the API for returning information from the bind call is cleaned up
// and we're no longer temporarily using the environment variable style, remove
// this.
func makeEnvVariableName(str string) string {
return strings.ToUpper(strings.Replace(str, "-", "_", -1))
}
func (b *Broker) getServices(impersonatedKC internalversion.ServicesGetter, namespace, instanceID string) (map[string]string, *api.Response) {
requirement, _ := labels.NewRequirement(templateapi.TemplateInstanceLabel, selection.Equals, []string{instanceID})
serviceList, err := impersonatedKC.Services(namespace).List(kapi.ListOptions{LabelSelector: labels.NewSelector().Add(*requirement)})
if err != nil {
if kerrors.IsForbidden(err) {
return nil, api.Forbidden(err)
}
return nil, api.InternalServerError(err)
}
services := map[string]string{}
for _, service := range serviceList.Items {
if !kapi.IsServiceIPSet(&service) || len(service.Spec.Ports) == 0 {
continue
}
name := makeEnvVariableName(service.Name) + "_SERVICE_HOST"
services[name] = service.Spec.ClusterIP
name = makeEnvVariableName(service.Name) + "_SERVICE_PORT"
services[name] = strconv.Itoa(int(service.Spec.Ports[0].Port))
for _, port := range service.Spec.Ports {
if port.Name != "" {
services[name+"_"+makeEnvVariableName(port.Name)] = strconv.Itoa(int(port.Port))
}
}
}
return services, nil
}
func (b *Broker) getSecrets(impersonatedKC internalversion.SecretsGetter, namespace, instanceID string) (map[string]string, *api.Response) {
requirement, _ := labels.NewRequirement(templateapi.TemplateInstanceLabel, selection.Equals, []string{instanceID})
secretList, err := impersonatedKC.Secrets(namespace).List(kapi.ListOptions{LabelSelector: labels.NewSelector().Add(*requirement)})
if err != nil {
if kerrors.IsForbidden(err) {
return nil, api.Forbidden(err)
}
return nil, api.InternalServerError(err)
}
secrets := map[string]string{}
for _, secret := range secretList.Items {
if secret.Type != kapi.SecretTypeBasicAuth {
continue
}
name := makeEnvVariableName(secret.Name + "_" + kapi.BasicAuthUsernameKey)
secrets[name] = string(secret.Data[kapi.BasicAuthUsernameKey])
name = makeEnvVariableName(secret.Name + "_" + kapi.BasicAuthPasswordKey)
secrets[name] = string(secret.Data[kapi.BasicAuthPasswordKey])
}
return secrets, nil
}
func (b *Broker) Bind(instanceID, bindingID string, breq *api.BindRequest) *api.Response {
if errs := ValidateBindRequest(breq); len(errs) > 0 {
return api.BadRequest(errs.ToAggregate())
}
if len(breq.Parameters) != 1 {
return api.BadRequest(errors.New("parameters not supported on bind"))
}
impersonate := breq.Parameters[templateapi.RequesterUsernameParameterKey]
impersonatedKC, _, _, err := b.getClientsForUsername(impersonate)
if err != nil {
return api.InternalServerError(err)
}
brokerTemplateInstance, err := b.templateclient.BrokerTemplateInstances().Get(instanceID)
if err != nil {
if kerrors.IsNotFound(err) {
return api.BadRequest(err)
}
return api.InternalServerError(err)
}
templateInstance, err := b.templateclient.TemplateInstances(brokerTemplateInstance.Spec.TemplateInstance.Namespace).Get(brokerTemplateInstance.Spec.TemplateInstance.Name)
if err != nil {
return api.InternalServerError(err)
}
if breq.ServiceID != string(templateInstance.Spec.Template.UID) {
return api.BadRequest(errors.New("service_id does not match provisioned service"))
}
namespace := brokerTemplateInstance.Spec.TemplateInstance.Namespace
services, resp := b.getServices(impersonatedKC.Core(), namespace, instanceID)
if resp != nil {
return resp
}
secrets, resp := b.getSecrets(impersonatedKC.Core(), namespace, instanceID)
if resp != nil {
return resp
}
// TODO: this API may not currently be considered stable.
credentials := map[string]interface{}{}
credentials["services"] = services
credentials["secrets"] = secrets
status := http.StatusCreated
for _, id := range brokerTemplateInstance.Spec.BindingIDs {
if id == bindingID {
status = http.StatusOK
break
}
}
if status == http.StatusCreated {
brokerTemplateInstance.Spec.BindingIDs = append(brokerTemplateInstance.Spec.BindingIDs, bindingID)
brokerTemplateInstance, err = b.templateclient.BrokerTemplateInstances().Update(brokerTemplateInstance)
if err != nil {
return api.InternalServerError(err)
}
}
return api.NewResponse(status, &api.BindResponse{Credentials: credentials}, nil)
}