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// SPDX-License-Identifier: GPL-3.0-or-later
package proxysql
import (
"database/sql"
_ "embed"
"errors"
_ "github.com/go-sql-driver/mysql"
"sync"
"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("proxysql", module.Creator{
JobConfigSchema: configSchema,
Create: func() module.Module { return New() },
})
}
func New() *ProxySQL {
return &ProxySQL{
Config: Config{
DSN: "stats:stats@tcp(127.0.0.1:6032)/",
Timeout: web.Duration(time.Second),
},
charts: baseCharts.Copy(),
once: &sync.Once{},
cache: &cache{
commands: make(map[string]*commandCache),
users: make(map[string]*userCache),
backends: make(map[string]*backendCache),
},
}
}
type Config struct {
UpdateEvery int `yaml:"update_every" json:"update_every"`
DSN string `yaml:"dsn" json:"dsn"`
Timeout web.Duration `yaml:"timeout" json:"timeout"`
}
type ProxySQL struct {
module.Base
Config `yaml:",inline" json:""`
charts *module.Charts
db *sql.DB
once *sync.Once
cache *cache
}
func (p *ProxySQL) Configuration() any {
return p.Config
}
func (p *ProxySQL) Init() error {
if p.DSN == "" {
p.Error("dsn not set")
return errors.New("dsn not set")
}
p.Debugf("using DSN [%s]", p.DSN)
return nil
}
func (p *ProxySQL) Check() error {
mx, err := p.collect()
if err != nil {
p.Error(err)
return err
}
if len(mx) == 0 {
return errors.New("no metrics collected")
}
return nil
}
func (p *ProxySQL) Charts() *module.Charts {
return p.charts
}
func (p *ProxySQL) Collect() map[string]int64 {
mx, err := p.collect()
if err != nil {
p.Error(err)
}
if len(mx) == 0 {
return nil
}
return mx
}
func (p *ProxySQL) Cleanup() {
if p.db == nil {
return
}
if err := p.db.Close(); err != nil {
p.Errorf("cleanup: error on closing the ProxySQL instance [%s]: %v", p.DSN, err)
}
p.db = nil
}
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