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// 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()
}
}
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