onepanel/pkg/service.go
2021-07-12 12:46:11 -07:00

110 lines
2.8 KiB
Go

package v1
import (
"fmt"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
// generateServiceURL generates the url that the service is located at
func (c *Client) generateServiceURL(namespace, name string) (string, error) {
protocol := c.systemConfig.APIProtocol()
if protocol == nil {
return "", fmt.Errorf("unable to get the api protocol from the system config")
}
domain := c.systemConfig.Domain()
if domain == nil {
return "", fmt.Errorf("unable to get a domain from the system config")
}
// https://name--namespace.domain
return fmt.Sprintf("%v%v--%v.%v", *protocol, name, namespace, *domain), nil
}
// ListServices finds all of the services in the given namespace
func (c *Client) ListServices(namespace string) ([]*Service, error) {
if namespace == "" {
return nil, fmt.Errorf("namespace is empty")
}
labelSelect := fmt.Sprintf("%v=%v", "service.onepanel.io/part-of", "onepanel")
serviceList, err := c.CoreV1().Services(namespace).List(ListOptions{
LabelSelector: labelSelect,
})
if err != nil {
return nil, err
}
services := make([]*Service, 0)
for _, serviceItem := range serviceList.Items {
serviceName := serviceItem.Labels["service.onepanel.io/name"]
serviceURL, err := c.generateServiceURL(namespace, serviceName)
if err != nil {
return nil, err
}
services = append(services, &Service{
Name: serviceName,
URL: serviceURL,
})
}
return services, nil
}
// GetService gets a specific service identified by namespace, name.
// If it is not found, nil, nil is returned
func (c *Client) GetService(namespace, name string) (*Service, error) {
labelSelect := fmt.Sprintf("%v=%v,%v=%v", "service.onepanel.io/part-of", "onepanel", "service.onepanel.io/name", name)
serviceList, err := c.CoreV1().Services(namespace).List(ListOptions{
LabelSelector: labelSelect,
})
if err != nil {
return nil, err
}
if len(serviceList.Items) == 0 {
return nil, nil
}
if len(serviceList.Items) > 1 {
return nil, fmt.Errorf("non-unique result found for GetService %v,%v", namespace, name)
}
serviceItem := serviceList.Items[0]
serviceName := serviceItem.Labels["service.onepanel.io/name"]
serviceURL, err := c.generateServiceURL(namespace, serviceName)
if err != nil {
return nil, err
}
service := &Service{
Name: serviceName,
URL: serviceURL,
}
return service, nil
}
// HasService checks if the cluster has a service available
func (c *Client) HasService(name string) (bool, error) {
if name != "kfserving-system" {
return false, fmt.Errorf("unsupported service")
}
if _, err := c.GetNamespace(name); err != nil {
return false, err
}
// Check if deployment is there for the web app
_, err := c.CoreV1().Pods("kfserving-system").List(metav1.ListOptions{
LabelSelector: "app.kubernetes.io/component=kfserving-models-web-app",
})
if err != nil {
return false, err
}
return true, nil
}