Add health check api

Signed-off-by: Masudur Rahman <masud@appscode.com>

rest-healthchek.go

@@ -0,0 +1,41 @@
+package sdk
+
+/*
+   Copyright 2016 Alexander I.Grafov <grafov@gmail.com>
+   Copyright 2016-2019 The Grafana SDK authors
+
+   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.
+
+   ॐ तारे तुत्तारे तुरे स्व
+*/
+
+import (
+	"fmt"
+)
+
+// Checks health of the grafana base url
+// Reflects GET BaseURL API call.
+func (r *Client) CheckHealth() error {
+	var (
+		raw  []byte
+		code int
+		err  error
+	)
+	if raw, code, err = r.get("", nil); err != nil {
+		return err
+	}
+	if code != 200 {
+		return fmt.Errorf("HTTP error %d: returns %s", code, raw)
+	}
+	return nil
+}