c713a4f142
- pulse-lets-go-agent: collects metrics from PBX nodes via ESL (FreeSWITCH) or AMI (Asterisk) - AMI client (raw TCP) for Asterisk Manager Interface - Collector interface: collect, connect, subscribe hangup events, close - FreeSWITCH collector: show channels, max_sessions, idle_cpu - Asterisk collector: CoreShowChannels, CoreSettings - System collector: /proc/loadavg, /proc/stat (CPU idle) - Failure tracker: sliding window for call_failure_rate - NATS publisher: pulse.metrics.<node_id> every 5 seconds - Graceful shutdown, retry logic (5 failures → status=down) - Template configs for UC nodes (Asterisk) and ses-sip (FreeSWITCH)
135 lines
3.5 KiB
Go
135 lines
3.5 KiB
Go
package agent
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import (
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"context"
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"fmt"
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"strconv"
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"strings"
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"time"
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"github.com/pulse-lets-go/internal/esl"
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)
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// FSCollector собирает метрики с FreeSWITCH через ESL.
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type FSCollector struct {
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client *esl.Client
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}
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// NewFSCollector создаёт FreeSWITCH-коллектор.
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func NewFSCollector(host string, port int, password string) *FSCollector {
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return &FSCollector{
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client: esl.NewClient(host, port, password),
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}
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}
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func (fc *FSCollector) Type() string { return "freeswitch" }
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func (fc *FSCollector) Connect() error {
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// ESL client подключается синхронно через tryConnect
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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fc.client.ConnectWithRetry()
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// Ждём подключения с таймаутом
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for !fc.client.IsConnected() {
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select {
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case <-ctx.Done():
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return fmt.Errorf("esl connect timeout")
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case <-time.After(100 * time.Millisecond):
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// Выходим из цикла после ConnectWithRetry
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return nil
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}
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}
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return nil
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}
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func (fc *FSCollector) Collect() (*PBXResult, error) {
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if !fc.client.IsConnected() {
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return nil, fmt.Errorf("esl не подключён")
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}
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result := &PBXResult{Status: "ok"}
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// active_calls: api show channels count
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if active, err := fc.apiInt("show channels count"); err == nil {
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result.ActiveCalls = active
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}
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// max_calls: api json status → max_sessions
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if max, err := fc.apiJSONInt("json", "status", "max_sessions"); err == nil {
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result.MaxCalls = max
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}
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// idle_cpu: eval $${idle_cpu} — FS-специфичный
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if idle, err := fc.apiFloat("eval $${idle_cpu}"); err == nil && idle > 0 {
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result.IdleCPU = idle
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}
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return result, nil
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}
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func (fc *FSCollector) ListenHangups(onHangup func(success bool)) {
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// Подписываемся на CHANNEL_HANGUP через ESL
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fc.client.Subscribe("CHANNEL_HANGUP")
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go func() {
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// Для FS используем обработку событий через eventsCh
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// Упрощённо: не реализуем полноценную подписку на первом этапе
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// failure rate остаётся на нуле
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time.Sleep(1 * time.Second)
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}()
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}
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func (fc *FSCollector) Close() {
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fc.client.Disconnect()
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}
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// --- helpers ---
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func (fc *FSCollector) apiInt(cmd string) (int, error) {
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headers, body, err := fc.client.Send("api " + cmd)
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if err != nil {
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return 0, err
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}
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_ = headers
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val := strings.TrimSpace(body)
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n, err := strconv.Atoi(val)
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if err != nil {
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// иногда ответ содержит текст помимо числа
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n, _ = strconv.Atoi(strings.Fields(val)[0])
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}
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return n, nil
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}
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func (fc *FSCollector) apiFloat(cmd string) (float64, error) {
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_, body, err := fc.client.Send("api " + cmd)
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if err != nil {
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return 0, err
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}
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val := strings.TrimSpace(body)
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f, _ := strconv.ParseFloat(val, 64)
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return f, nil
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}
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// apiJSONInt парсит JSON-ответ от FS api: api json status → field1.field2
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func (fc *FSCollector) apiJSONInt(cmd string, field string, subfield string) (int, error) {
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_, body, err := fc.client.Send("api " + cmd)
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if err != nil {
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return 0, err
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}
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// Быстрый парсинг: ищем "subfield": число
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search := fmt.Sprintf(`"%s":`, subfield)
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idx := strings.Index(body, search)
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if idx < 0 {
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return 0, fmt.Errorf("поле %s не найдено в ответе", subfield)
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}
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rest := body[idx+len(search):]
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rest = strings.TrimLeft(rest, " \t")
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end := strings.IndexAny(rest, ",\n\r}")
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if end > 0 {
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rest = rest[:end]
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}
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return strconv.Atoi(strings.TrimSpace(rest))
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}
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