1 files changed, 69 insertions, 0 deletions
diff --git a/src/go/collectors/go.d.plugin/modules/hdfs/client.go b/src/go/collectors/go.d.plugin/modules/hdfs/client.go
new file mode 100644
index 000000000..bdeced146
--- /dev/null
+++ b/src/go/collectors/go.d.plugin/modules/hdfs/client.go
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package hdfs
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+
+	"github.com/netdata/netdata/go/go.d.plugin/pkg/web"
+)
+
+func newClient(httpClient *http.Client, request web.Request) *client {
+	return &client{
+		httpClient: httpClient,
+		request:    request,
+	}
+}
+
+type client struct {
+	httpClient *http.Client
+	request    web.Request
+}
+
+func (c *client) do() (*http.Response, error) {
+	req, err := web.NewHTTPRequest(c.request)
+	if err != nil {
+		return nil, fmt.Errorf("error on creating http request to %s : %v", c.request.URL, err)
+	}
+
+	// req.Header.Add("Accept-Encoding", "gzip")
+	// req.Header.Set("User-Agent", "netdata/go.d.plugin")
+
+	return c.httpClient.Do(req)
+}
+
+func (c *client) doOK() (*http.Response, error) {
+	resp, err := c.do()
+	if err != nil {
+		return nil, err
+	}
+
+	if resp.StatusCode != http.StatusOK {
+		return resp, fmt.Errorf("%s returned %d", c.request.URL, resp.StatusCode)
+	}
+	return resp, nil
+}
+
+func (c *client) doOKWithDecodeJSON(dst interface{}) error {
+	resp, err := c.doOK()
+	defer closeBody(resp)
+	if err != nil {
+		return err
+	}
+
+	err = json.NewDecoder(resp.Body).Decode(dst)
+	if err != nil {
+		return fmt.Errorf("error on decoding response from %s : %v", c.request.URL, err)
+	}
+	return nil
+}
+
+func closeBody(resp *http.Response) {
+	if resp != nil && resp.Body != nil {
+		_, _ = io.Copy(io.Discard, resp.Body)
+		_ = resp.Body.Close()
+	}
+}