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// SPDX-License-Identifier: GPL-3.0-or-later
package uwsgi
import (
"bytes"
"fmt"
"github.com/netdata/netdata/go/plugins/plugin/go.d/pkg/socket"
)
type uwsgiConn interface {
connect() error
disconnect()
queryStats() ([]byte, error)
}
func newUwsgiConn(conf Config) uwsgiConn {
return &uwsgiClient{conn: socket.New(socket.Config{
Address: conf.Address,
ConnectTimeout: conf.Timeout.Duration(),
ReadTimeout: conf.Timeout.Duration(),
WriteTimeout: conf.Timeout.Duration(),
})}
}
type uwsgiClient struct {
conn socket.Client
}
func (c *uwsgiClient) connect() error {
return c.conn.Connect()
}
func (c *uwsgiClient) disconnect() {
_ = c.conn.Disconnect()
}
func (c *uwsgiClient) queryStats() ([]byte, error) {
var b bytes.Buffer
var n int64
var err error
const readLineLimit = 1000 * 10
clientErr := c.conn.Command("", func(bs []byte) bool {
b.Write(bs)
b.WriteByte('\n')
if n++; n >= readLineLimit {
err = fmt.Errorf("read line limit exceeded %d", readLineLimit)
return false
}
// The server will close the connection when it has finished sending data.
return true
})
if clientErr != nil {
return nil, clientErr
}
if err != nil {
return nil, err
}
return b.Bytes(), nil
}
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