mediamtx/internal/core/core.go

498 lines
11 KiB
Go

package core
import (
"context"
"fmt"
"os"
"reflect"
"sync/atomic"
"gopkg.in/alecthomas/kingpin.v2"
"github.com/aler9/rtsp-simple-server/internal/conf"
"github.com/aler9/rtsp-simple-server/internal/confwatcher"
"github.com/aler9/rtsp-simple-server/internal/logger"
"github.com/aler9/rtsp-simple-server/internal/rlimit"
)
var version = "v0.0.0"
// Core is an instance of rtsp-simple-server.
type Core struct {
ctx context.Context
ctxCancel func()
confPath string
conf *conf.Conf
confFound bool
stats *stats
logger *logger.Logger
metrics *metrics
pprof *pprof
pathManager *pathManager
rtspServerPlain *rtspServer
rtspServerTLS *rtspServer
rtmpServer *rtmpServer
hlsServer *hlsServer
confWatcher *confwatcher.ConfWatcher
// out
done chan struct{}
}
// New allocates a core.
func New(args []string) (*Core, bool) {
k := kingpin.New("rtsp-simple-server",
"rtsp-simple-server "+version+"\n\nRTSP server.")
argVersion := k.Flag("version", "print version").Bool()
argConfPath := k.Arg("confpath", "path to a config file. The default is rtsp-simple-server.yml.").Default("rtsp-simple-server.yml").String()
kingpin.MustParse(k.Parse(args))
if *argVersion {
fmt.Println(version)
os.Exit(0)
}
// on Linux, try to raise the number of file descriptors that can be opened
// to allow the maximum possible number of clients
// do not check for errors
rlimit.Raise()
ctx, ctxCancel := context.WithCancel(context.Background())
p := &Core{
ctx: ctx,
ctxCancel: ctxCancel,
confPath: *argConfPath,
done: make(chan struct{}),
}
var err error
p.conf, p.confFound, err = conf.Load(p.confPath)
if err != nil {
fmt.Printf("ERR: %s\n", err)
return nil, false
}
err = p.createResources(true)
if err != nil {
p.Log(logger.Info, "ERR: %s", err)
p.closeResources(nil)
return nil, false
}
if p.confFound {
p.confWatcher, err = confwatcher.New(p.confPath)
if err != nil {
p.Log(logger.Info, "ERR: %s", err)
p.closeResources(nil)
return nil, false
}
}
go p.run()
return p, true
}
func (p *Core) close() {
p.ctxCancel()
<-p.done
}
// Wait waits for the Core to exit.
func (p *Core) Wait() {
<-p.done
}
// Log is the main logging function.
func (p *Core) Log(level logger.Level, format string, args ...interface{}) {
countPublishers := atomic.LoadInt64(p.stats.CountPublishers)
countReaders := atomic.LoadInt64(p.stats.CountReaders)
p.logger.Log(level, "[%d/%d] "+format, append([]interface{}{
countPublishers, countReaders,
}, args...)...)
}
func (p *Core) run() {
defer close(p.done)
confChanged := func() chan struct{} {
if p.confWatcher != nil {
return p.confWatcher.Watch()
}
return make(chan struct{})
}()
outer:
for {
select {
case <-confChanged:
err := p.reloadConf()
if err != nil {
p.Log(logger.Info, "ERR: %s", err)
break outer
}
case <-p.ctx.Done():
break outer
}
}
p.ctxCancel()
p.closeResources(nil)
if p.confWatcher != nil {
p.confWatcher.Close()
}
}
func (p *Core) createResources(initial bool) error {
var err error
if p.stats == nil {
p.stats = newStats()
}
if p.logger == nil {
p.logger, err = logger.New(
p.conf.LogLevelParsed,
p.conf.LogDestinationsParsed,
p.conf.LogFile)
if err != nil {
return err
}
}
if initial {
p.Log(logger.Info, "rtsp-simple-server %s", version)
if !p.confFound {
p.Log(logger.Warn, "configuration file not found, using the default one")
}
}
if p.conf.Metrics {
if p.metrics == nil {
p.metrics, err = newMetrics(
p.conf.MetricsAddress,
p.stats,
p)
if err != nil {
return err
}
}
}
if p.conf.PPROF {
if p.pprof == nil {
p.pprof, err = newPPROF(
p.conf.PPROFAddress,
p)
if err != nil {
return err
}
}
}
if p.pathManager == nil {
p.pathManager = newPathManager(
p.ctx,
p.conf.RTSPAddress,
p.conf.ReadTimeout,
p.conf.WriteTimeout,
p.conf.ReadBufferCount,
p.conf.ReadBufferSize,
p.conf.AuthMethodsParsed,
p.conf.Paths,
p.stats,
p)
}
if !p.conf.RTSPDisable &&
(p.conf.EncryptionParsed == conf.EncryptionNo ||
p.conf.EncryptionParsed == conf.EncryptionOptional) {
if p.rtspServerPlain == nil {
_, useUDP := p.conf.ProtocolsParsed[conf.ProtocolUDP]
_, useMulticast := p.conf.ProtocolsParsed[conf.ProtocolMulticast]
p.rtspServerPlain, err = newRTSPServer(
p.ctx,
p.conf.RTSPAddress,
p.conf.ReadTimeout,
p.conf.WriteTimeout,
p.conf.ReadBufferCount,
p.conf.ReadBufferSize,
useUDP,
useMulticast,
p.conf.RTPAddress,
p.conf.RTCPAddress,
p.conf.MulticastIPRange,
p.conf.MulticastRTPPort,
p.conf.MulticastRTCPPort,
false,
"",
"",
p.conf.RTSPAddress,
p.conf.ProtocolsParsed,
p.conf.RunOnConnect,
p.conf.RunOnConnectRestart,
p.stats,
p.pathManager,
p)
if err != nil {
return err
}
}
}
if !p.conf.RTSPDisable &&
(p.conf.EncryptionParsed == conf.EncryptionStrict ||
p.conf.EncryptionParsed == conf.EncryptionOptional) {
if p.rtspServerTLS == nil {
p.rtspServerTLS, err = newRTSPServer(
p.ctx,
p.conf.RTSPSAddress,
p.conf.ReadTimeout,
p.conf.WriteTimeout,
p.conf.ReadBufferCount,
p.conf.ReadBufferSize,
false,
false,
"",
"",
"",
0,
0,
true,
p.conf.ServerCert,
p.conf.ServerKey,
p.conf.RTSPAddress,
p.conf.ProtocolsParsed,
p.conf.RunOnConnect,
p.conf.RunOnConnectRestart,
p.stats,
p.pathManager,
p)
if err != nil {
return err
}
}
}
if !p.conf.RTMPDisable {
if p.rtmpServer == nil {
p.rtmpServer, err = newRTMPServer(
p.ctx,
p.conf.RTMPAddress,
p.conf.ReadTimeout,
p.conf.WriteTimeout,
p.conf.ReadBufferCount,
p.conf.RTSPAddress,
p.conf.RunOnConnect,
p.conf.RunOnConnectRestart,
p.stats,
p.pathManager,
p)
if err != nil {
return err
}
}
}
if !p.conf.HLSDisable {
if p.hlsServer == nil {
p.hlsServer, err = newHLSServer(
p.ctx,
p.conf.HLSAddress,
p.conf.HLSAlwaysRemux,
p.conf.HLSSegmentCount,
p.conf.HLSSegmentDuration,
p.conf.HLSAllowOrigin,
p.conf.ReadBufferCount,
p.stats,
p.pathManager,
p)
if err != nil {
return err
}
}
}
return nil
}
func (p *Core) closeResources(newConf *conf.Conf) {
closeStats := false
if newConf == nil {
closeStats = true
}
closeLogger := false
if newConf == nil ||
!reflect.DeepEqual(newConf.LogDestinationsParsed, p.conf.LogDestinationsParsed) ||
newConf.LogFile != p.conf.LogFile {
closeLogger = true
}
closeMetrics := false
if newConf == nil ||
newConf.Metrics != p.conf.Metrics ||
newConf.MetricsAddress != p.conf.MetricsAddress ||
closeStats {
closeMetrics = true
}
closePPROF := false
if newConf == nil ||
newConf.PPROF != p.conf.PPROF ||
newConf.PPROFAddress != p.conf.PPROFAddress ||
closeStats {
closePPROF = true
}
closePathMan := false
if newConf == nil ||
newConf.RTSPAddress != p.conf.RTSPAddress ||
newConf.ReadTimeout != p.conf.ReadTimeout ||
newConf.WriteTimeout != p.conf.WriteTimeout ||
newConf.ReadBufferCount != p.conf.ReadBufferCount ||
newConf.ReadBufferSize != p.conf.ReadBufferSize ||
!reflect.DeepEqual(newConf.AuthMethodsParsed, p.conf.AuthMethodsParsed) ||
closeStats {
closePathMan = true
} else if !reflect.DeepEqual(newConf.Paths, p.conf.Paths) {
p.pathManager.OnConfReload(newConf.Paths)
}
closeServerPlain := false
if newConf == nil ||
newConf.RTSPDisable != p.conf.RTSPDisable ||
newConf.EncryptionParsed != p.conf.EncryptionParsed ||
newConf.RTSPAddress != p.conf.RTSPAddress ||
newConf.ReadTimeout != p.conf.ReadTimeout ||
newConf.WriteTimeout != p.conf.WriteTimeout ||
newConf.ReadBufferCount != p.conf.ReadBufferCount ||
!reflect.DeepEqual(newConf.ProtocolsParsed, p.conf.ProtocolsParsed) ||
newConf.RTPAddress != p.conf.RTPAddress ||
newConf.RTCPAddress != p.conf.RTCPAddress ||
newConf.MulticastIPRange != p.conf.MulticastIPRange ||
newConf.MulticastRTPPort != p.conf.MulticastRTPPort ||
newConf.MulticastRTCPPort != p.conf.MulticastRTCPPort ||
newConf.RTSPAddress != p.conf.RTSPAddress ||
!reflect.DeepEqual(newConf.ProtocolsParsed, p.conf.ProtocolsParsed) ||
newConf.RunOnConnect != p.conf.RunOnConnect ||
newConf.RunOnConnectRestart != p.conf.RunOnConnectRestart ||
closeStats ||
closePathMan {
closeServerPlain = true
}
closeServerTLS := false
if newConf == nil ||
newConf.RTSPDisable != p.conf.RTSPDisable ||
newConf.EncryptionParsed != p.conf.EncryptionParsed ||
newConf.RTSPSAddress != p.conf.RTSPSAddress ||
newConf.ReadTimeout != p.conf.ReadTimeout ||
newConf.WriteTimeout != p.conf.WriteTimeout ||
newConf.ReadBufferCount != p.conf.ReadBufferCount ||
newConf.ServerCert != p.conf.ServerCert ||
newConf.ServerKey != p.conf.ServerKey ||
newConf.RTSPAddress != p.conf.RTSPAddress ||
!reflect.DeepEqual(newConf.ProtocolsParsed, p.conf.ProtocolsParsed) ||
newConf.RunOnConnect != p.conf.RunOnConnect ||
newConf.RunOnConnectRestart != p.conf.RunOnConnectRestart ||
closeStats ||
closePathMan {
closeServerTLS = true
}
closeServerRTMP := false
if newConf == nil ||
newConf.RTMPDisable != p.conf.RTMPDisable ||
newConf.RTMPAddress != p.conf.RTMPAddress ||
newConf.ReadTimeout != p.conf.ReadTimeout ||
newConf.WriteTimeout != p.conf.WriteTimeout ||
newConf.ReadBufferCount != p.conf.ReadBufferCount ||
newConf.RTSPAddress != p.conf.RTSPAddress ||
newConf.RunOnConnect != p.conf.RunOnConnect ||
newConf.RunOnConnectRestart != p.conf.RunOnConnectRestart ||
closeStats ||
closePathMan {
closeServerRTMP = true
}
closeServerHLS := false
if newConf == nil ||
newConf.HLSDisable != p.conf.HLSDisable ||
newConf.HLSAddress != p.conf.HLSAddress ||
newConf.HLSAlwaysRemux != p.conf.HLSAlwaysRemux ||
newConf.HLSSegmentCount != p.conf.HLSSegmentCount ||
newConf.HLSSegmentDuration != p.conf.HLSSegmentDuration ||
newConf.HLSAllowOrigin != p.conf.HLSAllowOrigin ||
newConf.ReadBufferCount != p.conf.ReadBufferCount ||
closeStats ||
closePathMan {
closeServerHLS = true
}
if closeServerTLS && p.rtspServerTLS != nil {
p.rtspServerTLS.close()
p.rtspServerTLS = nil
}
if closeServerPlain && p.rtspServerPlain != nil {
p.rtspServerPlain.close()
p.rtspServerPlain = nil
}
if closePathMan && p.pathManager != nil {
p.pathManager.close()
p.pathManager = nil
}
if closeServerHLS && p.hlsServer != nil {
p.hlsServer.close()
p.hlsServer = nil
}
if closeServerRTMP && p.rtmpServer != nil {
p.rtmpServer.close()
p.rtmpServer = nil
}
if closePPROF && p.pprof != nil {
p.pprof.close()
p.pprof = nil
}
if closeMetrics && p.metrics != nil {
p.metrics.close()
p.metrics = nil
}
if closeLogger && p.logger != nil {
p.logger.Close()
p.logger = nil
}
if closeStats && p.stats != nil {
p.stats.close()
}
}
func (p *Core) reloadConf() error {
p.Log(logger.Info, "reloading configuration")
newConf, _, err := conf.Load(p.confPath)
if err != nil {
return err
}
p.closeResources(newConf)
p.conf = newConf
return p.createResources(false)
}