| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package memcached |
| 4 | |
| 5 | import ( |
| 6 | "bytes" |
| 7 | "strings" |
| 8 | |
| 9 | "github.com/netdata/netdata/go/plugins/plugin/go.d/pkg/socket" |
| 10 | ) |
| 11 | |
| 12 | type memcachedConn interface { |
| 13 | connect() error |
| 14 | disconnect() |
| 15 | queryStats() ([]byte, error) |
| 16 | } |
| 17 | |
| 18 | func newMemcachedConn(conf Config) memcachedConn { |
| 19 | return &memcachedClient{conn: socket.New(socket.Config{ |
| 20 | Address: conf.Address, |
| 21 | Timeout: conf.Timeout.Duration(), |
| 22 | })} |
| 23 | } |
| 24 | |
| 25 | type memcachedClient struct { |
| 26 | conn socket.Client |
| 27 | } |
| 28 | |
| 29 | func (c *memcachedClient) connect() error { |
| 30 | return c.conn.Connect() |
| 31 | } |
| 32 | |
| 33 | func (c *memcachedClient) disconnect() { |
| 34 | _ = c.conn.Disconnect() |
| 35 | } |
| 36 | |
| 37 | func (c *memcachedClient) queryStats() ([]byte, error) { |
| 38 | var b bytes.Buffer |
| 39 | if err := c.conn.Command("stats\r\n", func(bytes []byte) (bool, error) { |
| 40 | s := strings.TrimSpace(string(bytes)) |
| 41 | b.WriteString(s) |
| 42 | b.WriteByte('\n') |
| 43 | |
| 44 | return !(strings.HasPrefix(s, "END") || strings.HasPrefix(s, "ERROR")), nil |
| 45 | }); err != nil { |
| 46 | return nil, err |
| 47 | } |
| 48 | return b.Bytes(), nil |
| 49 | } |