Provide Healthcheck API MVP0.8.0

Implements basic functionality of running starting Healthcheck.
Results can be inspected so-far without dedicated API, by using, for
example, Query API.

Issue-ID: MULTICLOUD-1233
Signed-off-by: Konrad Bańka <k.banka@samsung.com>
Change-Id: Ia4d96d936d573173d7d8f41e6c39d059bf5f8b1f

1 files changed, 59 insertions, 0 deletions

diff --git a/src/k8splugin/internal/healthcheck/kubeclient.go b/src/k8splugin/internal/healthcheck/kubeclient.go
new file mode 100644
index 00000000..be4c6fcc
--- /dev/null
+++ b/src/k8splugin/internal/healthcheck/kubeclient.go
@@ -0,0 +1,59 @@
+/*
+Copyright © 2021 Samsung Electronics
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package healthcheck
+
+import (
+	"k8s.io/helm/pkg/kube"
+	"k8s.io/helm/pkg/tiller/environment"
+
+	"github.com/onap/multicloud-k8s/src/k8splugin/internal/app"
+	"github.com/onap/multicloud-k8s/src/k8splugin/internal/config"
+
+	pkgerrors "github.com/pkg/errors"
+)
+
+//implements environment.KubeClient but overrides it so that
+//custom labels can be injected into created resources
+// using internal k8sClient
+type KubeClientImpl struct {
+	environment.KubeClient
+	labels map[string]string
+	k      app.KubernetesClient
+}
+
+func NewKubeClient(instanceId, cloudRegion string) (*KubeClientImpl, error) {
+	k8sClient := app.KubernetesClient{}
+	err := k8sClient.Init(cloudRegion, instanceId)
+	if err != nil {
+		return nil, pkgerrors.Wrap(err, "Initializing k8sClient")
+	}
+	return &KubeClientImpl{
+		labels: map[string]string{
+			config.GetConfiguration().KubernetesLabelName: instanceId,
+		},
+		KubeClient: kube.New(&k8sClient),
+		k:          k8sClient,
+	}, nil
+}
+
+/* FIXME
+// Need to correct this later and provide override of Create method to use our k8sClient
+// So that healthcheck hook resources would be labeled with vf-module data just like currently
+// every k8splugin-managed resource is
+
+//Create function is overrided to label test resources with custom labels
+func (kci *KubeClientImpl) Create(namespace string, reader io.Reader, timeout int64, shouldWait bool) error {
+	return nil
+}
+*/