/
watchdog.go
182 lines (165 loc) · 5.75 KB
/
watchdog.go
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package views
import (
"log"
"sync"
"time"
commonTransporter "github.com/ystv/streamer/common/transporter"
"github.com/ystv/streamer/common/transporter/action"
"github.com/ystv/streamer/common/transporter/server"
"github.com/ystv/streamer/common/wsMessages"
)
func (v *Views) BeginWatchdog() {
log.Printf("watchdog initiailised")
go func() {
for {
time.Sleep(15 * time.Second)
if v.conf.Verbose {
log.Printf("watchdog called")
}
streams, err := v.store.GetStreams()
if err != nil {
log.Printf("failed to get streams for watchdog: %+v", err)
continue
}
_, rec := v.cache.Get(server.Recorder.String())
_, fow := v.cache.Get(server.Forwarder.String())
for _, stream := range streams {
stream1 := stream
go func() {
transporter := commonTransporter.Transporter{
Action: action.Status,
Unique: stream1.Stream,
}
fStatus := commonTransporter.ForwarderStatus{
Website: len(stream1.Website) > 0,
Streams: len(stream1.Streams),
}
var forwarderError, recorderError bool
var wg sync.WaitGroup
wg.Add(2)
go func() {
defer wg.Done()
if len(stream1.Recording) > 0 && rec {
recorderTransporter := transporter
var response commonTransporter.ResponseTransporter
response, err = v.wsHelper(server.Recorder, recorderTransporter)
if err != nil {
log.Printf("failed to send or receive message from recorder for watchdog status: %+v", err)
recorderError = true
return
}
if response.Status == wsMessages.Error {
log.Printf("failed to get correct response from recorder for watchdog status: %s", response.Payload)
recorderError = true
return
}
if response.Status != wsMessages.Okay {
log.Printf("invalid response from recorder for watchdog status: %s", response)
recorderError = true
return
}
}
}()
go func() {
defer wg.Done()
if fow {
forwarderTransporter := transporter
forwarderTransporter.Payload = fStatus
var response commonTransporter.ResponseTransporter
response, err = v.wsHelper(server.Forwarder, forwarderTransporter)
if err != nil {
log.Printf("failed to send or receive message from forwarder for watchdog status: %+v", err)
forwarderError = true
return
}
if response.Status == wsMessages.Error {
log.Printf("failed to get correct response from forwarder for watchdog status: %s", response.Payload)
forwarderError = true
return
}
if response.Status != wsMessages.Okay {
log.Printf("invalid response from recorder for watchdog status: %s", response)
forwarderError = true
return
}
}
}()
wg.Wait()
if recorderError && rec {
stopTransporter := commonTransporter.Transporter{
Action: action.Stop,
Unique: stream1.Stream,
}
var wsResponse commonTransporter.ResponseTransporter
wsResponse, err = v.wsHelper(server.Recorder, stopTransporter)
if err != nil {
log.Printf("failed sending to Recorder for watchdog stop: %+v", err)
}
if wsResponse.Status == wsMessages.Error {
log.Printf("failed sending to Recorder for watchdog stop: %#v", wsResponse)
}
if wsResponse.Status != wsMessages.Okay {
log.Printf("invalid response from Recorder for watchdog stop: %#v", wsResponse)
}
startTransporter := commonTransporter.Transporter{
Action: action.Start,
Unique: stream1.Stream,
Payload: commonTransporter.RecorderStart{
StreamIn: stream1.Input,
PathOut: stream1.Recording,
},
}
wsResponse, err = v.wsHelper(server.Recorder, startTransporter)
if err != nil {
log.Printf("failed sending to Recorder for watchdog start: %+v", err)
}
if wsResponse.Status == wsMessages.Error {
log.Printf("failed sending to Recorder for watchdog start: %#v", wsResponse)
}
if wsResponse.Status != wsMessages.Okay {
log.Printf("invalid response from Recorder for watchdog start: %#v", wsResponse)
}
log.Printf("watchdog successfully restarted Recorder: %s", stream1.Streams)
}
if forwarderError && fow {
stopTransporter := commonTransporter.Transporter{
Action: action.Stop,
Unique: stream1.Stream,
}
var wsResponse commonTransporter.ResponseTransporter
wsResponse, err = v.wsHelper(server.Forwarder, stopTransporter)
if err != nil {
log.Printf("failed sending to Forwarder for watchdog stop: %+v", err)
}
if wsResponse.Status == wsMessages.Error {
log.Printf("failed sending to Forwarder for watchdog stop: %#v", wsResponse)
}
if wsResponse.Status != wsMessages.Okay {
log.Printf("invalid response from Forwarder for watchdog stop: %#v", wsResponse)
}
startTransporter := commonTransporter.Transporter{
Action: action.Start,
Unique: stream1.Stream,
Payload: commonTransporter.ForwarderStart{
StreamIn: stream1.Input,
WebsiteOut: stream1.Website,
Streams: stream1.Streams,
},
}
wsResponse, err = v.wsHelper(server.Forwarder, startTransporter)
if err != nil {
log.Printf("failed sending to Forwarder for watchdog start: %+v", err)
}
if wsResponse.Status == wsMessages.Error {
log.Printf("failed sending to Forwarder for watchdog start: %#v", wsResponse)
}
if wsResponse.Status != wsMessages.Okay {
log.Printf("invalid response from Forwarder for watchdog start: %#v", wsResponse)
}
log.Printf("watchdog successfully restarted Forwarder: %s", stream1.Streams)
}
}()
}
}
}()
}