168 lines
3.2 KiB
Go
168 lines
3.2 KiB
Go
package agent
|
|
|
|
import (
|
|
"embed"
|
|
"fmt"
|
|
"log"
|
|
"os"
|
|
"sync"
|
|
"time"
|
|
)
|
|
|
|
type Config struct {
|
|
NodeName string
|
|
OriginURL string
|
|
DiscoveryURL string
|
|
HlsPort int
|
|
ApiPort int
|
|
Subnet string
|
|
DataDir string
|
|
Weight int
|
|
}
|
|
|
|
type Agent struct {
|
|
cfg Config
|
|
mediamtxFS embed.FS
|
|
mtx *MediaMTXManager
|
|
hb *Heartbeat
|
|
monitor *Monitor
|
|
nodeID string
|
|
stopCh chan struct{}
|
|
connected bool
|
|
mu sync.RWMutex
|
|
}
|
|
|
|
func New(cfg Config, mtxFS embed.FS) (*Agent, error) {
|
|
return &Agent{
|
|
cfg: cfg,
|
|
mediamtxFS: mtxFS,
|
|
nodeID: generateNodeID(cfg),
|
|
stopCh: make(chan struct{}),
|
|
}, nil
|
|
}
|
|
|
|
func (a *Agent) Start() error {
|
|
if err := os.MkdirAll(a.cfg.DataDir, 0755); err != nil {
|
|
return fmt.Errorf("create data dir: %w", err)
|
|
}
|
|
|
|
a.hb = NewHeartbeat(a.cfg, a.nodeID)
|
|
if err := a.hb.Discover(); err != nil {
|
|
log.Printf("Warning: initial discovery failed: %v (will retry every 10 seconds)", err)
|
|
} else {
|
|
a.cfg.OriginURL = a.hb.OriginURL()
|
|
}
|
|
|
|
a.mtx = NewMediaMTXManager(a.cfg, a.mediamtxFS)
|
|
if err := a.mtx.Extract(); err != nil {
|
|
return fmt.Errorf("extract mediamtx: %w", err)
|
|
}
|
|
|
|
if err := a.mtx.WriteConfig(); err != nil {
|
|
return fmt.Errorf("write config: %w", err)
|
|
}
|
|
|
|
if err := a.mtx.Start(); err != nil {
|
|
return fmt.Errorf("start mediamtx: %w", err)
|
|
}
|
|
|
|
a.monitor = NewMonitor()
|
|
time.Sleep(2 * time.Second)
|
|
|
|
if err := a.connect(); err != nil {
|
|
log.Printf("Warning: connection failed: %v (will retry every 10 seconds)", err)
|
|
}
|
|
|
|
go a.heartbeatLoop()
|
|
go a.monitorLoop()
|
|
|
|
return nil
|
|
}
|
|
|
|
func (a *Agent) Stop() {
|
|
log.Println("Stopping agent...")
|
|
close(a.stopCh)
|
|
if a.mtx != nil {
|
|
a.mtx.Stop()
|
|
}
|
|
log.Println("Agent stopped")
|
|
}
|
|
|
|
func (a *Agent) heartbeatLoop() {
|
|
ticker := time.NewTicker(10 * time.Second)
|
|
defer ticker.Stop()
|
|
for {
|
|
select {
|
|
case <-a.stopCh:
|
|
return
|
|
case <-ticker.C:
|
|
if !a.Connected() {
|
|
if err := a.connect(); err != nil {
|
|
log.Printf("Connection retry failed: %v", err)
|
|
continue
|
|
}
|
|
}
|
|
metrics := a.monitor.Snapshot()
|
|
if err := a.hb.Send(metrics); err != nil {
|
|
a.setConnected(false)
|
|
log.Printf("Heartbeat error: %v", err)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func (a *Agent) monitorLoop() {
|
|
ticker := time.NewTicker(5 * time.Second)
|
|
defer ticker.Stop()
|
|
for {
|
|
select {
|
|
case <-a.stopCh:
|
|
return
|
|
case <-ticker.C:
|
|
a.monitor.Tick()
|
|
if a.mtx != nil {
|
|
a.monitor.SetMediaMetrics(a.mtx.Metrics())
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func (a *Agent) NodeID() string { return a.nodeID }
|
|
func (a *Agent) Config() Config { return a.cfg }
|
|
func (a *Agent) Connected() bool {
|
|
a.mu.RLock()
|
|
defer a.mu.RUnlock()
|
|
return a.connected
|
|
}
|
|
|
|
func (a *Agent) setConnected(connected bool) {
|
|
a.mu.Lock()
|
|
a.connected = connected
|
|
a.mu.Unlock()
|
|
}
|
|
|
|
func (a *Agent) connect() error {
|
|
if err := a.hb.Discover(); err != nil {
|
|
return err
|
|
}
|
|
if err := a.hb.Register(); err != nil {
|
|
return err
|
|
}
|
|
a.setConnected(true)
|
|
return nil
|
|
}
|
|
func (a *Agent) Metrics() Metrics {
|
|
if a.monitor != nil {
|
|
return a.monitor.Snapshot()
|
|
}
|
|
return Metrics{}
|
|
}
|
|
|
|
func generateNodeID(cfg Config) string {
|
|
host, _ := os.Hostname()
|
|
if host == "" {
|
|
host = "unknown"
|
|
}
|
|
return fmt.Sprintf("%s-%s", host, cfg.NodeName)
|
|
}
|