Merge discovery package into k8s package

k8s/discovery.go

@@ -0,0 +1,42 @@
+package k8s
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/TwinProduction/gatus/core"
+)
+
+// DiscoverServices return discovered services
+func DiscoverServices(kubernetesConfig *Config) ([]*core.Service, error) {
+	client := NewClient(kubernetesConfig.ClusterMode)
+	services := make([]*core.Service, 0)
+	for _, ns := range kubernetesConfig.Namespaces {
+		kubernetesServices, err := GetKubernetesServices(client, ns.Name)
+		if err != nil {
+			return nil, err
+		}
+		for _, s := range kubernetesServices {
+			if isExcluded(kubernetesConfig.ExcludeSuffix, s.Name) {
+				continue
+			}
+			services = append(services, &core.Service{
+				Name:       s.Name,
+				URL:        fmt.Sprintf("http://%s%s/%s", s.Name, ns.ServiceSuffix, ns.HealthAPI),
+				Interval:   kubernetesConfig.ServiceTemplate.Interval,
+				Conditions: kubernetesConfig.ServiceTemplate.Conditions,
+			})
+		}
+	}
+	return services, nil
+}
+
+// TODO: don't uselessly allocate new things here, just move this inside the DiscoverServices function
+func isExcluded(excludeList []string, name string) bool {
+	for _, x := range excludeList {
+		if strings.HasSuffix(name, x) {
+			return true
+		}
+	}
+	return false
+}