1 files changed, 131 insertions, 0 deletions
diff --git a/src/go/collectors/go.d.plugin/modules/hdfs/hdfs.go b/src/go/collectors/go.d.plugin/modules/hdfs/hdfs.go
new file mode 100644
index 000000000..4a02feaad
--- /dev/null
+++ b/src/go/collectors/go.d.plugin/modules/hdfs/hdfs.go
@@ -0,0 +1,131 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package hdfs
+
+import (
+	_ "embed"
+	"errors"
+	"time"
+
+	"github.com/netdata/netdata/go/go.d.plugin/agent/module"
+	"github.com/netdata/netdata/go/go.d.plugin/pkg/web"
+)
+
+//go:embed "config_schema.json"
+var configSchema string
+
+func init() {
+	module.Register("hdfs", module.Creator{
+		JobConfigSchema: configSchema,
+		Create:          func() module.Module { return New() },
+	})
+}
+
+func New() *HDFS {
+	config := Config{
+		HTTP: web.HTTP{
+			Request: web.Request{
+				URL: "http://127.0.0.1:9870/jmx",
+			},
+			Client: web.Client{
+				Timeout: web.Duration(time.Second),
+			},
+		},
+	}
+
+	return &HDFS{
+		Config: config,
+	}
+}
+
+type Config struct {
+	web.HTTP    `yaml:",inline" json:""`
+	UpdateEvery int `yaml:"update_every" json:"update_every"`
+}
+
+type (
+	HDFS struct {
+		module.Base
+		Config `yaml:",inline" json:""`
+
+		client *client
+
+		nodeType
+	}
+	nodeType string
+)
+
+const (
+	dataNodeType nodeType = "DataNode"
+	nameNodeType nodeType = "NameNode"
+)
+
+func (h *HDFS) Configuration() any {
+	return h.Config
+}
+
+func (h *HDFS) Init() error {
+	if err := h.validateConfig(); err != nil {
+		h.Errorf("config validation: %v", err)
+		return err
+	}
+
+	cl, err := h.createClient()
+	if err != nil {
+		h.Errorf("error on creating client : %v", err)
+		return err
+	}
+	h.client = cl
+
+	return nil
+}
+
+func (h *HDFS) Check() error {
+	typ, err := h.determineNodeType()
+	if err != nil {
+		h.Errorf("error on node type determination : %v", err)
+		return err
+	}
+	h.nodeType = typ
+
+	mx, err := h.collect()
+	if err != nil {
+		h.Error(err)
+		return err
+	}
+	if len(mx) == 0 {
+		return errors.New("no metrics collected")
+	}
+	return nil
+}
+
+func (h *HDFS) Charts() *Charts {
+	switch h.nodeType {
+	default:
+		return nil
+	case nameNodeType:
+		return nameNodeCharts()
+	case dataNodeType:
+		return dataNodeCharts()
+	}
+}
+
+func (h *HDFS) Collect() map[string]int64 {
+	mx, err := h.collect()
+
+	if err != nil {
+		h.Error(err)
+	}
+
+	if len(mx) == 0 {
+		return nil
+	}
+
+	return mx
+}
+
+func (h *HDFS) Cleanup() {
+	if h.client != nil && h.client.httpClient != nil {
+		h.client.httpClient.CloseIdleConnections()
+	}
+}