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// SPDX-License-Identifier: GPL-3.0-or-later
package dmcache
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("dmcache", module.Creator{
JobConfigSchema: configSchema,
Defaults: module.Defaults{
UpdateEvery: 10,
},
Create: func() module.Module { return New() },
Config: func() any { return &Config{} },
})
}
func New() *DmCache {
return &DmCache{
Config: Config{
Timeout: web.Duration(time.Second * 2),
},
charts: &module.Charts{},
devices: make(map[string]bool),
}
}
type Config struct {
UpdateEvery int `yaml:"update_every,omitempty" json:"update_every"`
Timeout web.Duration `yaml:"timeout,omitempty" json:"timeout"`
}
type (
DmCache struct {
module.Base
Config `yaml:",inline" json:""`
charts *module.Charts
exec dmsetupCLI
devices map[string]bool
}
dmsetupCLI interface {
cacheStatus() ([]byte, error)
}
)
func (c *DmCache) Configuration() any {
return c.Config
}
func (c *DmCache) Init() error {
dmsetup, err := c.initDmsetupCLI()
if err != nil {
c.Errorf("dmsetup exec initialization: %v", err)
return err
}
c.exec = dmsetup
return nil
}
func (c *DmCache) Check() error {
mx, err := c.collect()
if err != nil {
c.Error(err)
return err
}
if len(mx) == 0 {
return errors.New("no metrics collected")
}
return nil
}
func (c *DmCache) Charts() *module.Charts {
return c.charts
}
func (c *DmCache) Collect() map[string]int64 {
mx, err := c.collect()
if err != nil {
c.Error(err)
}
if len(mx) == 0 {
return nil
}
return mx
}
func (c *DmCache) Cleanup() {}
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