func (p *ScaleProcessor) Process(img *img4g.Image) error {
l4g.Debug("process scale")
var err error
tran := cat.Instance().NewTransaction(Image, "Scale")
defer func() {
tran.SetStatus(err)
tran.Complete()
}()
err = img.Resize(p.Width, p.Height)
return err
}
func (handler *Handler) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
Cat := cat.Instance()
handler.ChainBuilder = &ProcChainBuilder{Cat}
tran := Cat.NewTransaction("Image.Request", "Request")
var (
ok bool
err error
)
defer func() {
p := recover()
if p != nil {
l4g.Error(p)
Cat.LogPanic(p)
}
if !ok {
tran.SetStatus("1")
}
if err != nil {
l4g.Error(err)
Cat.LogError(err)
tran.SetStatus(err)
}
if p != nil {
tran.SetStatus(p)
} else {
tran.SetStatus("0")
}
tran.Complete()
if !ok || err != nil || p != nil {
http.Error(writer, http.StatusText(404), 404)
}
}()
uri := request.URL.String()
tran.AddData("url", uri)
params, ok1 := legalUrl.FindStringSubmatchMap(uri)
ok = ok1
if !ok1 {
l4g.Error("url.unexpected.mark(url:%s)", uri)
Cat.LogPanic(JoinString("url.unexpected.mark url:", uri))
return
}
store, err1 := FindStorage(params)
err = err1
if err1 != nil {
l4g.Error("%s; rcv(url:%s)", err, request.URL.String())
return
}
chain, err1 := handler.ChainBuilder.Build(params)
err = err1
if err1 != nil {
return
}
bts, err1 := store.GetImage()
err = err1
if err1 != nil {
return
}
l4g.Debug("get image length(%d) rcv(url:%s)", len(bts), request.URL.String())
format, _ := params["ext"]
img := &img4g.Image{Blob: bts, Format: format}
status := make(chan bool)
imgHd := imgHandle{img, chain, status}
imgHandleChan <- imgHd
timeout := make(chan bool, 1)
ok = true
go func() {
time.Sleep(10 * time.Second) //wait 10s
timeout <- true
}()
select {
case ok = <-status:
if !ok {
return
}
case <-timeout:
ok = false
return
}
writer.Header().Set("Content-Type", "image/"+format)
writer.Header().Set("Content-Length", strconv.Itoa(len(img.Blob)))
if _, err = writer.Write(img.Blob); err != nil {
l4g.Error(err)
return
}
}
return err
}
if err = chain.Process(img); err != nil {
return err
}
if err = img.WriteImageBlob(); err != nil {
return err
}
return nil
}
func FindStorage(params map[string]string) (storage.Storage, error) {
srcPath, ok := params[":1"]
if !ok {
return nil, errors.New("Url.UnExpected")
}
format, ok := params["ext"]
if !ok {
return nil, errors.New("Image.Ext.Invalid()")
}
sourceType, _, path := ParseUri(srcPath)
return GetStorage(sourceType, path+"."+format)
}
var catimage cat.Cat = cat.Instance()
func log(msg string, err interface{}) {
l4g.Error("%s -- %s", msg, err)
catimage.LogPanic(err)
}
defer func() {
if err := recover(); err != nil {
this.log(JoinString("subprocessor->sendStats(port:", this.Port, ")"), err)
this.sendStats()
}
}()
for {
time.Sleep(10 * time.Second)
uri := JoinString("http://localhost:", this.HostPort, "/heartbeat/")
l4g.Debug(JoinString("port:", this.Port, " | ", uri))
status := GetStats()
data := url.Values{}
data.Add("port", this.Port)
for k, v := range status {
data.Add(k, v)
}
_, err := PostHttp(uri, data)
if err != nil {
// handle error
this.log(JoinString("subprocessor->sendStats->posthttp(port:", this.Port, ")"), err)
}
}
}
var catsub cat.Cat = cat.Instance()
func (this *SubProcessor) log(msg string, err interface{}) {
l4g.Error("%s -- %s", msg, err)
catsub.LogPanic(err)
}
func (this *HostProcessor) sendCatHeartBeat() {
defer func() {
if err := recover(); err != nil {
l4g.Error(err)
this.sendCatHeartBeat()
}
}()
ip := GetIP()
second := time.Now().Second()
if second < 29 {
sleep := time.Duration((29 - second) * 1000000000)
time.Sleep(sleep)
}
catinstance := cat.Instance()
for {
l4g.Debug("send cat heartbeat")
stats1 := GetStats()
data := url.Values{}
data.Add("port", hostPost)
for k, v := range stats1 {
data.Add(k, v)
}
portstats[hostPost] = data
tran := catinstance.NewTransaction("System", "Stats")
h := catinstance.NewHeartbeat("HeartBeat", ip)
for _, heart := range portstats {
if heart == nil {
continue
}
port := heart.Get("port")
if port == "" {
continue
}
h.Set("System", JoinString("Alloc_", port), heart.Get("Alloc"))
h.Set("System", JoinString("TotalAlloc_", port), heart.Get("TotalAlloc"))
h.Set("System", JoinString("Sys_", port), heart.Get("Sys"))
h.Set("System", JoinString("Mallocs_", port), heart.Get("Mallocs"))
h.Set("System", JoinString("Frees_", port), heart.Get("Frees"))
h.Set("System", JoinString("OtherSys_", port), heart.Get("OtherSys"))
h.Set("System", JoinString("PauseNs_", port), heart.Get("PauseNs"))
h.Set("HeapUsage", JoinString("HeapAlloc_", port), heart.Get("HeapAlloc"))
h.Set("HeapUsage", JoinString("HeapSys_", port), heart.Get("HeapSys"))
h.Set("HeapUsage", JoinString("HeapIdle_", port), heart.Get("HeapIdle"))
h.Set("HeapUsage", JoinString("HeapInuse_", port), heart.Get("HeapInuse"))
h.Set("HeapUsage", JoinString("HeapReleased_", port), heart.Get("HeapReleased"))
h.Set("HeapUsage", JoinString("HeapObjects_", port), heart.Get("HeapObjects"))
h.Set("GC", JoinString("NextGC_", port), heart.Get("NextGC"))
h.Set("GC", JoinString("LastGC_", port), heart.Get("LastGC"))
h.Set("GC", JoinString("NumGC_", port), heart.Get("NumGC"))
portstats[port] = nil
}
h.SetStatus("0")
h.Complete()
tran.SetStatus("0")
tran.Complete()
second = time.Now().Second()
sleep := time.Duration((90 - second) * 1000000000)
time.Sleep(sleep)
}
}
l4g.Debug("listen and serve port:" + hostPost)
//start server
http.HandleFunc("/heartbeat/", this.heartbeatHandler)
if err := http.ListenAndServe(":"+hostPost, nil); err != nil {
this.log(JoinString("hostprocessor->listenHeartbeat(port:", hostPost, ")"), err)
os.Exit(1)
}
}
func (this *HostProcessor) heartbeatHandler(w http.ResponseWriter, request *http.Request) {
port := request.FormValue("port")
var value string = "0"
if port != "" {
portstats[port] = request.Form
value = "1"
}
l4g.Debug(JoinString("get heartbeat from port[", port, "]"))
w.Header().Set("Connection", "keep-alive")
a := []byte(value)
w.Header().Set("Content-Length", strconv.Itoa(len(a)))
w.Write(a)
}
var cathost cat.Cat = cat.Instance()
func (this *HostProcessor) log(msg string, err interface{}) {
l4g.Error("%s -- %s", msg, err)
cathost.LogPanic(err)
}