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// SPDX-License-Identifier: GPL-3.0-or-later
package gearman
import (
"bytes"
"fmt"
"strings"
"github.com/netdata/netdata/go/plugins/plugin/go.d/pkg/socket"
)
type gearmanConn interface {
connect() error
disconnect()
queryStatus() ([]byte, error)
queryPriorityStatus() ([]byte, error)
}
func newGearmanConn(conf Config) gearmanConn {
return &gearmanClient{conn: socket.New(socket.Config{
Address: conf.Address,
ConnectTimeout: conf.Timeout.Duration(),
ReadTimeout: conf.Timeout.Duration(),
WriteTimeout: conf.Timeout.Duration(),
})}
}
type gearmanClient struct {
conn socket.Client
}
func (c *gearmanClient) connect() error {
return c.conn.Connect()
}
func (c *gearmanClient) disconnect() {
_ = c.conn.Disconnect()
}
func (c *gearmanClient) queryStatus() ([]byte, error) {
return c.query("status")
}
func (c *gearmanClient) queryPriorityStatus() ([]byte, error) {
return c.query("prioritystatus")
}
func (c *gearmanClient) query(cmd string) ([]byte, error) {
const limitReadLines = 10000
var num int
var err error
var b bytes.Buffer
clientErr := c.conn.Command(cmd+"\n", func(bs []byte) bool {
s := string(bs)
if strings.HasPrefix(s, "ERR") {
err = fmt.Errorf("command '%s': %s", cmd, s)
return false
}
b.WriteString(s)
b.WriteByte('\n')
if num++; num >= limitReadLines {
err = fmt.Errorf("command '%s': read line limit exceeded (%d)", cmd, limitReadLines)
return false
}
return !strings.HasPrefix(s, ".")
})
if clientErr != nil {
return nil, fmt.Errorf("command '%s' client error: %v", cmd, clientErr)
}
if err != nil {
return nil, err
}
return b.Bytes(), nil
}
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