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// SPDX-License-Identifier: GPL-3.0-or-later
package zookeeper
import (
"fmt"
"strconv"
"strings"
)
func (z *Zookeeper) collect() (map[string]int64, error) {
return z.collectMntr()
}
func (z *Zookeeper) collectMntr() (map[string]int64, error) {
const command = "mntr"
lines, err := z.fetch("mntr")
if err != nil {
return nil, err
}
switch len(lines) {
case 0:
return nil, fmt.Errorf("'%s' command returned empty response", command)
case 1:
// mntr is not executed because it is not in the whitelist.
return nil, fmt.Errorf("'%s' command returned bad response: %s", command, lines[0])
}
mx := make(map[string]int64)
for _, line := range lines {
parts := strings.Fields(line)
if len(parts) != 2 || !strings.HasPrefix(parts[0], "zk_") {
continue
}
key, value := strings.TrimPrefix(parts[0], "zk_"), parts[1]
switch key {
case "version":
case "server_state":
mx[key] = convertServerState(value)
case "min_latency", "avg_latency", "max_latency":
v, err := strconv.ParseFloat(value, 64)
if err != nil {
continue
}
mx[key] = int64(v * 1000)
default:
v, err := strconv.ParseFloat(value, 64)
if err != nil {
continue
}
mx[key] = int64(v)
}
}
if len(mx) == 0 {
return nil, fmt.Errorf("'%s' command: failed to parse response", command)
}
return mx, nil
}
func convertServerState(state string) int64 {
switch state {
default:
return 0
case "leader":
return 1
case "follower":
return 2
case "observer":
return 3
case "standalone":
return 4
}
}
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