func (l *splunkLogger) tryPostMessages(messages []*splunkMessage) error {
if len(messages) == 0 {
return nil
}
var buffer bytes.Buffer
var writer io.Writer
var gzipWriter *gzip.Writer
var err error
// If gzip compression is enabled - create gzip writer with specified compression
// level. If gzip compression is disabled, use standard buffer as a writer
if l.gzipCompression {
gzipWriter, err = gzip.NewWriterLevel(&buffer, l.gzipCompressionLevel)
if err != nil {
return err
}
writer = gzipWriter
} else {
writer = &buffer
}
for _, message := range messages {
jsonEvent, err := json.Marshal(message)
if err != nil {
return err
}
if _, err := writer.Write(jsonEvent); err != nil {
return err
}
}
// If gzip compression is enabled, tell it, that we are done
if l.gzipCompression {
err = gzipWriter.Close()
if err != nil {
return err
}
}
req, err := http.NewRequest("POST", l.url, bytes.NewBuffer(buffer.Bytes()))
if err != nil {
return err
}
req.Header.Set("Authorization", l.auth)
// Tell if we are sending gzip compressed body
if l.gzipCompression {
req.Header.Set("Content-Encoding", "gzip")
}
res, err := l.client.Do(req)
if err != nil {
return err
}
defer res.Body.Close()
if res.StatusCode != http.StatusOK {
var body []byte
body, err = ioutil.ReadAll(res.Body)
if err != nil {
return err
}
return fmt.Errorf("%s: failed to send event - %s - %s", driverName, res.Status, body)
}
io.Copy(ioutil.Discard, res.Body)
return nil
}
// WriteBytes writes an encrypted/compressed stream to an io.Writer
func writeBytes(out io.Writer, key string, data []byte) error {
var gzWriter *gzip.Writer // compressed writer
var iv [aes.BlockSize]byte // initialization vector
var cb cipher.Block // cipher block interface
var err error // general error holder
// init cipher block
if cb, err = aes.NewCipher(hashKey(key)); err != nil {
return err
}
// init encrypted writer
encWriter := &cipher.StreamWriter{
S: cipher.NewOFB(cb, iv[:]),
W: out,
}
// close when done
defer encWriter.Close()
// wrap encrypted writer
gzWriter = gzip.NewWriter(encWriter)
// close when done
defer gzWriter.Close()
// copy data to destination file compressing and encrypting along the way
_, err = io.Copy(gzWriter, bytes.NewReader(data))
// return copy error
return err
}
func CreateGobsFile(targetFilePath string, recs *[]interface{}, getRecPtr GobRecPtrMaker, gzipped bool) {
var file, err = os.Create(targetFilePath)
var gobber *gob.Encoder
var gzipper *gzip.Writer
if file != nil {
defer file.Close()
}
if err != nil {
panic(err)
}
if gzipped {
if gzipper, err = gzip.NewWriterLevel(file, gzip.BestCompression); gzipper != nil {
defer gzipper.Close()
gobber = gob.NewEncoder(gzipper)
}
if err != nil {
panic(err)
}
} else {
gobber = gob.NewEncoder(file)
}
for _, rec := range *recs {
if err = gobber.Encode(coreutil.PtrVal(getRecPtr(rec))); err != nil {
panic(err)
}
}
}
func NewDscout(waiter *sync.WaitGroup, filename string) *Dscout {
d := new(Dscout)
d.Operation.Waiter = waiter
d.Operation.Waiter.Add(1)
file, err := os.Create(filename)
if err != nil {
return nil
}
d.closer = func() {
file.Close()
}
var writer io.WriteCloser = file
var compressor *gzip.Writer
if strings.HasSuffix(filename, ".gz") {
compressor = gzip.NewWriter(file)
d.closer = func() { compressor.Close(); file.Close() }
writer = compressor
}
uncompressed_name := strings.TrimRight(filename, ".gz")
switch {
case strings.HasSuffix(uncompressed_name, ".gob"):
d.marshaler = new(formats.GobMarshaler)
case strings.HasSuffix(uncompressed_name, ".xml"):
d.marshaler = new(formats.XmlMarshaler)
}
if d.marshaler != nil {
d.marshaler.InitFile(writer)
}
return d
}
func webQuitHandler(diskwriter *csv.Writer, gzipwriter *gzip.Writer, csvfile *os.File) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "flushing to disk and shutting down")
diskwriter.Flush()
if gzipwriter != nil {
gzipwriter.Flush()
gzipwriter.Close()
}
csvfile.Close()
os.Exit(0)
}
}
func (this *HtmlView) Publish(ctxt *web.Context) (err error) {
names := mvc.GetMvcMeta(ctxt)
if names[mvc.MVC_ACTION] == "" {
names[mvc.MVC_ACTION] = "_"
}
var tmpl *template.Template
tmpl, err = this.getTmpl(names)
if err == nil {
var method = ctxt.Method()
ctxt.SetHeader("Content-Type", "text/html; charset=utf-8")
if method != "HEAD" {
var err error
var tw io.Writer = ctxt.Response
var gzipwriter *gzip.Writer
if ctxt.ReqHeaderHas("Accept-Encoding", "gzip") {
ctxt.SetHeader("Content-Encoding", "gzip")
gzipwriter, _ = gzip.NewWriterLevel(ctxt.Response, gzip.BestSpeed)
tw = gzipwriter
}
ctxt.SetHeader("Vary", "Accept-Encoding")
ctxt.Response.WriteHeader(200)
err = tmpl.Execute(tw, this.VM)
if err != nil {
// Header already sent... multiple write headers
//panic(err)
log.Println(err)
}
if gzipwriter != nil {
gzipwriter.Close()
}
if flushw, ok := ctxt.Response.(http.Flusher); ok {
flushw.Flush()
}
} else {
ctxt.Response.WriteHeader(200)
}
} else {
log.Println(err)
ctxt.SetErrorCode(500)
}
return
}
func main() {
var file *os.File
var err error
var writer *gzip.Writer
var body []byte
if file, err = os.Create("output/sample.tar.gz"); err != nil {
log.Fatalln(err)
}
defer file.Close()
// gzip.NewWriter()なら、エラーを返さないので便利
if writer, err = gzip.NewWriterLevel(file, gzip.BestCompression); err != nil {
log.Fatalln(err)
}
defer writer.Close()
var filepaths = []string{
"files/b0044482_1413812.jpg",
"files/dart_flight_school.png",
"files/golang.txt",
}
// Write()がio.Writerと同じなので、そのまま行ける。
// buf := new(bytes.Buffer)
// tw := tar.NewWriter(buf)
tw := tar.NewWriter(writer)
defer tw.Close()
for _, filepath := range filepaths {
if body, err = ioutil.ReadFile(filepath); err != nil {
log.Fatalln(err)
}
if body != nil {
hdr := &tar.Header{
Name: path.Base(filepath),
Size: int64(len(body)),
}
if err := tw.WriteHeader(hdr); err != nil {
println(err)
}
if _, err := tw.Write(body); err != nil {
println(err)
}
}
}
// writer.Write(buf.Bytes())
// writer.Flush()
}
func (s *server) serveSync(rw http.ResponseWriter, req *http.Request) {
memberID := s.validateConnection(rw, req)
if memberID == "" {
return
}
s.logger.Infof("Peer Member %s started synchronization from address %s", memberID, req.RemoteAddr)
// Create a new channel for the new member synchronization
syncChan := make(chan []byte)
s.syncReqChannel <- syncChan
// Send the response header to client side
flusher := rw.(http.Flusher)
gzipped := strings.Contains(req.Header.Get("Accept-Encoding"), "gzip")
var gzipWriter *gzip.Writer
var err error
if gzipped {
// override the response writer to be a gzipped writer
if gzipWriter, err = gzip.NewWriterLevel(rw, gzip.DefaultCompression); err == nil {
rw = gzipResponseWrapper{Writer: gzipWriter, ResponseWriter: rw}
rw.Header().Set("Content-Encoding", "gzip")
flusher = rw.(http.Flusher)
defer func() {
gzipWriter.Close()
}()
} else {
s.logger.Warnf("Gzip wrapper creation for %s from %s failed: %v. Falling back to uncompressed HTTP", memberID, req.RemoteAddr, err)
}
}
encoder := newEncoder(rw)
var msgID uint64
for data := range syncChan {
ev := &sse{id: strconv.FormatUint(msgID, 10), event: "SYNC", data: string(data)}
// Write to the ResponseWriter
// Server Sent Events compatible
if err := encoder.Encode(ev); err != nil {
s.logger.WithFields(log.Fields{
"error": err,
}).Errorf("Failed to encode sync message to peer member %s", memberID)
return
}
msgID++
}
flusher.Flush()
s.logger.Infof("Peer Member %s synchronization has been completed successfully", memberID)
}
func createInvoiceFile(filename string) (io.WriteCloser, func(), error) {
file, err := os.Create(filename)
if err != nil {
return nil, nil, err
}
closer := func() { file.Close() }
var writer io.WriteCloser = file
var compressor *gzip.Writer
if strings.HasSuffix(filename, ".gz") {
compressor = gzip.NewWriter(file)
closer = func() { compressor.Close(); file.Close() }
writer = compressor
}
return writer, closer, nil
}
func (nf *Netflow) NewFileWriter(filename string, mode int, compress bool) error {
log.Debugln("NewFileWriter")
if _, ok := nf.writers[filename]; ok {
return fmt.Errorf("netflow writer %v already exists", filename)
}
f, err := os.Create(filename)
if err != nil {
return err
}
c := make(chan *Packet, BUFFER_DEPTH)
go func() {
var w *gzip.Writer
if compress {
log.Debugln("using compression")
w = gzip.NewWriter(f)
}
for {
d := <-c
if d == nil {
break
}
if mode == ASCII {
if compress {
w.Write([]byte(d.GoString()))
} else {
f.Write([]byte(d.GoString()))
}
} else {
if compress {
w.Write(d.Raw)
} else {
f.Write(d.Raw)
}
}
}
if compress {
w.Close()
}
f.Close()
}()
nf.registerWriter(filename, c)
return nil
}
func (e *Engine) gzip() error {
var buf bytes.Buffer
var level int
var err error
level, err = e.stack.PopInt()
if err == nil {
var w *gzip.Writer
w, err = gzip.NewWriterLevel(&buf, level)
if err == nil {
_, err = w.Write(e.stack.Pop())
w.Close()
}
}
if err == nil {
e.stack.Push(buf.Bytes())
}
return err
}
func writeSure(path string, info DirWalker) (err error) {
file, err := os.Create(path)
if err != nil {
return
}
defer file.Close()
var zfile io.Writer
if strings.HasSuffix(path, ".gz") {
var tmp *gzip.Writer
tmp = gzip.NewWriter(file)
defer tmp.Close()
zfile = tmp
} else {
zfile = file
}
io.WriteString(zfile, magic)
dumpDir(zfile, "__root__", info)
return
}
func runPatchManifest(args []string) (exit int) {
var fh *os.File
var err error
if patchReplace && patchOverwrite {
stderr("patch-manifest: Cannot use both --replace and --overwrite")
return 1
}
if !patchReplace && len(args) != 2 {
stderr("patch-manifest: Must provide input and output files (or use --replace)")
return 1
}
if patchReplace && len(args) != 1 {
stderr("patch-manifest: Must provide one file")
return 1
}
if patchManifestFile != "" && (patchName != "" || patchExec != "" || patchUser != "" || patchGroup != "" || patchCaps != "" || patchMounts != "") {
stderr("patch-manifest: --manifest is incompatible with other manifest editing options")
return 1
}
inputFile = args[0]
// Prepare output writer
if patchReplace {
fh, err = ioutil.TempFile(path.Dir(inputFile), ".actool-tmp."+path.Base(inputFile)+"-")
if err != nil {
stderr("patch-manifest: Cannot create temporary file: %v", err)
return 1
}
} else {
outputFile = args[1]
ext := filepath.Ext(outputFile)
if ext != schema.ACIExtension {
stderr("patch-manifest: Extension must be %s (given %s)", schema.ACIExtension, ext)
return 1
}
mode := os.O_CREATE | os.O_WRONLY
if patchOverwrite {
mode |= os.O_TRUNC
} else {
mode |= os.O_EXCL
}
fh, err = os.OpenFile(outputFile, mode, 0644)
if err != nil {
if os.IsExist(err) {
stderr("patch-manifest: Output file exists (try --overwrite)")
} else {
stderr("patch-manifest: Unable to open output %s: %v", outputFile, err)
}
return 1
}
}
var gw *gzip.Writer
var w io.WriteCloser = fh
if !patchNocompress {
gw = gzip.NewWriter(fh)
w = gw
}
tw := tar.NewWriter(w)
defer func() {
tw.Close()
if !patchNocompress {
gw.Close()
}
fh.Close()
if exit != 0 && !patchOverwrite {
os.Remove(fh.Name())
}
}()
// Prepare input reader
input, err := os.Open(inputFile)
if err != nil {
stderr("patch-manifest: Cannot open %s: %v", inputFile, err)
return 1
}
defer input.Close()
tr, err := aci.NewCompressedTarReader(input)
if err != nil {
stderr("patch-manifest: Cannot extract %s: %v", inputFile, err)
return 1
}
defer tr.Close()
var newManifest []byte
if patchManifestFile != "" {
mr, err := os.Open(patchManifestFile)
if err != nil {
stderr("patch-manifest: Cannot open %s: %v", patchManifestFile, err)
return 1
}
defer input.Close()
newManifest, err = ioutil.ReadAll(mr)
if err != nil {
stderr("patch-manifest: Cannot read %s: %v", patchManifestFile, err)
return 1
}
}
err = extractManifest(tr.Reader, tw, false, newManifest)
if err != nil {
stderr("patch-manifest: Unable to read %s: %v", inputFile, err)
return 1
}
if patchReplace {
err = os.Rename(fh.Name(), inputFile)
if err != nil {
stderr("patch-manifest: Cannot rename %q to %q: %v", fh.Name, inputFile, err)
return 1
}
}
return
}
// Closes a gzip writer and returns it to the pool:
func ReturnGZipWriter(gz *gzip.Writer) {
gz.Close()
gzipWriterCache.Put(gz)
}
func main() {
log.SetFlags(log.LstdFlags | log.Lshortfile)
tr := &http.Transport{
ResponseHeaderTimeout: time.Second * 500,
DisableKeepAlives: false,
DisableCompression: false,
}
var wXml *gzip.Writer = nil
var ww *bufio.Writer = nil
var xFile *os.File = nil
meshFile, err2 := os.Create(meshFile)
if err2 != nil {
return
}
defer meshFile.Close()
wwMesh := bufio.NewWriter(meshFile)
wMesh := gzip.NewWriter(wwMesh)
//w := bufio.NewWriter(file)
numIdsPerUrl := findNumIdsPerUrl()
pmids := make([]string, numIdsPerUrl)
urlFetcher := gopubmed.Fetcher{
Ssl: false,
Transport: &http.Transport{
ResponseHeaderTimeout: time.Second * 500,
DisableKeepAlives: false,
DisableCompression: false,
//TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
},
}
allCount := 0
count := 0
reader, err := makeReader()
if err != nil {
log.Fatal(err)
}
first := true
chunkCount := 0
for {
thisNumIdsPerUrl := findNumIdsPerUrl()
if numIdsPerUrl != thisNumIdsPerUrl {
numIdsPerUrl = thisNumIdsPerUrl
pmids = make([]string, numIdsPerUrl)
}
line, err := reader.ReadString('\n')
if err != nil {
// You may check here if err == io.EOF
break
}
line = strings.TrimSpace(line)
err = lineChecker(line)
if err != nil {
log.Fatal(err)
}
//log.Println(line)
pmids[count] = line
if wXml == nil {
wXml, ww, xFile = makeXmlWriter(allCount, pmids[0])
}
count = count + 1
// Collected enough pmids: get their XML from NIH
if count == numIdsPerUrl {
getPubmedRecords(&urlFetcher, first, wMesh, wXml, tr, pmids)
checkTime()
first = false
count = 0
zeroArray(pmids)
} else {
}
allCount += 1
chunkCount += 1
// Start new xml file: close old one: open new one
if chunkCount > recordsPerFile {
fmt.Fprintln(wXml, endPubmedArticleSet)
wXml.Flush()
wXml.Close()
ww.Flush()
wXml, ww, xFile = makeXmlWriter(allCount, pmids[0])
chunkCount = 0
first = true
}
if allCount%500 == 0 {
log.Println(allCount)
}
}
if count != 0 {
getPubmedRecords(&urlFetcher, first, wMesh, wXml, tr, pmids)
}
fmt.Fprintln(wXml, endPubmedArticleSet)
wXml.Flush()
wXml.Close()
ww.Flush()
wMesh.Flush()
wwMesh.Flush()
wMesh.Close()
xFile.Close()
}
//go:generate goannotation $GOFILE
// @rest GET /v1/msgs/:appid/:topic/:ver?group=xx&batch=10&reset=<newest|oldest>&ack=1&q=<dead|retry>
func (this *subServer) subHandler(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
var (
topic string
ver string
myAppid string
hisAppid string
reset string
group string
realGroup string
shadow string
rawTopic string
partition string
partitionN int = -1
offset string
offsetN int64 = -1
limit int // max messages to include in the message set
delayedAck bool // last acked partition/offset piggybacked on this request
err error
)
if !Options.DisableMetrics {
this.subMetrics.SubTryQps.Mark(1)
}
query := r.URL.Query()
group = query.Get("group")
myAppid = r.Header.Get(HttpHeaderAppid)
realGroup = myAppid + "." + group
reset = query.Get("reset")
realIp := getHttpRemoteIp(r)
if !manager.Default.ValidateGroupName(r.Header, group) {
log.Error("sub -(%s): illegal group: %s", realIp, group)
this.subMetrics.ClientError.Mark(1)
writeBadRequest(w, "illegal group")
return
}
if Options.BadGroupRateLimit && !this.throttleBadGroup.Pour(realGroup, 0) {
this.goodGroupLock.RLock()
_, good := this.goodGroupClients[r.RemoteAddr]
this.goodGroupLock.RUnlock()
if !good {
// this bad group client is in confinement period
log.Error("sub -(%s): group[%s] failure quota exceeded %s", realIp, realGroup, r.Header.Get("User-Agent"))
writeQuotaExceeded(w)
return
}
}
limit, err = getHttpQueryInt(&query, "batch", 1)
if err != nil {
log.Error("sub -(%s): illegal batch: %v", realIp, err)
this.subMetrics.ClientError.Mark(1)
writeBadRequest(w, "illegal batch")
return
}
if limit > Options.MaxSubBatchSize && Options.MaxSubBatchSize > 0 {
limit = Options.MaxSubBatchSize
}
ver = params.ByName(UrlParamVersion)
topic = params.ByName(UrlParamTopic)
hisAppid = params.ByName(UrlParamAppid)
// auth
if err = manager.Default.AuthSub(myAppid, r.Header.Get(HttpHeaderSubkey),
hisAppid, topic, group); err != nil {
log.Error("sub[%s/%s] -(%s): {%s.%s.%s UA:%s} %v",
myAppid, group, realIp, hisAppid, topic, ver, r.Header.Get("User-Agent"), err)
this.subMetrics.ClientError.Mark(1)
writeAuthFailure(w, err)
return
}
// fetch the client ack partition and offset
delayedAck = query.Get("ack") == "1"
if delayedAck {
// consumers use explicit acknowledges in order to signal a message as processed successfully
// if consumers fail to ACK, the message hangs and server will refuse to move ahead
// get the partitionN and offsetN from client header
// client will ack with partition=-1, offset=-1:
// 1. handshake phase
// 2. when 204 No Content
partition = r.Header.Get(HttpHeaderPartition)
offset = r.Header.Get(HttpHeaderOffset)
if partition != "" && offset != "" {
// convert partition and offset to int
offsetN, err = strconv.ParseInt(offset, 10, 64)
if err != nil {
log.Error("sub[%s/%s] %s(%s) {%s.%s.%s UA:%s} offset:%s",
myAppid, group, r.RemoteAddr, realIp, hisAppid, topic, ver, r.Header.Get("User-Agent"), offset)
this.subMetrics.ClientError.Mark(1)
writeBadRequest(w, "ack with bad offset")
return
}
partitionN, err = strconv.Atoi(partition)
if err != nil {
log.Error("sub[%s/%s] %s(%s) {%s.%s.%s UA:%s} partition:%s",
myAppid, group, r.RemoteAddr, realIp, hisAppid, topic, ver, r.Header.Get("User-Agent"), partition)
this.subMetrics.ClientError.Mark(1)
writeBadRequest(w, "ack with bad partition")
return
}
} else if len(partition+offset) != 0 {
log.Error("sub[%s/%s] %s(%s) {%s.%s.%s P:%s O:%s UA:%s} partial ack",
myAppid, group, r.RemoteAddr, realIp, hisAppid, topic, ver, partition, offset, r.Header.Get("User-Agent"))
this.subMetrics.ClientError.Mark(1)
writeBadRequest(w, "partial ack not allowed")
return
}
}
shadow = query.Get("q")
log.Debug("sub[%s/%s] %s(%s) {%s.%s.%s q:%s batch:%d ack:%s P:%s O:%s UA:%s}",
myAppid, group, r.RemoteAddr, realIp, hisAppid, topic, ver, shadow,
limit, query.Get("ack"), partition, offset, r.Header.Get("User-Agent"))
if !Options.DisableMetrics {
this.subMetrics.SubQps.Mark(1)
}
// calculate raw topic according to shadow
if shadow != "" {
if !sla.ValidateShadowName(shadow) {
log.Error("sub[%s/%s] %s(%s) {%s.%s.%s q:%s UA:%s} invalid shadow name",
myAppid, group, r.RemoteAddr, realIp, hisAppid, topic, ver, shadow, r.Header.Get("User-Agent"))
this.subMetrics.ClientError.Mark(1)
writeBadRequest(w, "invalid shadow name")
return
}
if !manager.Default.IsShadowedTopic(hisAppid, topic, ver, myAppid, group) {
log.Error("sub[%s/%s] %s(%s) {%s.%s.%s q:%s UA:%s} not a shadowed topic",
myAppid, group, r.RemoteAddr, realIp, hisAppid, topic, ver, shadow, r.Header.Get("User-Agent"))
this.subMetrics.ClientError.Mark(1)
writeBadRequest(w, "register shadow first")
return
}
rawTopic = manager.Default.ShadowTopic(shadow, myAppid, hisAppid, topic, ver, group)
} else {
rawTopic = manager.Default.KafkaTopic(hisAppid, topic, ver)
}
cluster, found := manager.Default.LookupCluster(hisAppid)
if !found {
log.Error("sub[%s/%s] %s(%s) {%s.%s.%s UA:%s} cluster not found",
myAppid, group, r.RemoteAddr, realIp, hisAppid, topic, ver, r.Header.Get("User-Agent"))
this.subMetrics.ClientError.Mark(1)
writeBadRequest(w, "invalid appid")
return
}
fetcher, err := store.DefaultSubStore.Fetch(cluster, rawTopic,
realGroup, r.RemoteAddr, realIp, reset, Options.PermitStandbySub)
if err != nil {
// e,g. kafka was totally shutdown
// e,g. too many consumers for the same group
log.Error("sub[%s/%s] -(%s): {%s.%s.%s UA:%s} %v",
myAppid, group, realIp, hisAppid, topic, ver, r.Header.Get("User-Agent"), err)
if store.DefaultSubStore.IsSystemError(err) {
writeServerError(w, err.Error())
} else {
this.subMetrics.ClientError.Mark(1)
if Options.BadGroupRateLimit && !this.throttleBadGroup.Pour(realGroup, 1) {
writeQuotaExceeded(w)
} else {
writeBadRequest(w, err.Error())
}
}
return
}
// commit the acked offset
if delayedAck && partitionN >= 0 && offsetN >= 0 {
if err = fetcher.CommitUpto(&sarama.ConsumerMessage{
Topic: rawTopic,
Partition: int32(partitionN),
Offset: offsetN,
}); err != nil {
// during rebalance, this might happen, but with no bad effects
log.Trace("sub land[%s/%s] %s(%s) {%s/%s ack:1 O:%s UA:%s} %v",
myAppid, group, r.RemoteAddr, realIp, rawTopic, partition, offset, r.Header.Get("User-Agent"), err)
} else {
log.Debug("sub land[%s/%s] %s(%s) {T:%s/%s, O:%s}",
myAppid, group, r.RemoteAddr, realIp, rawTopic, partition, offset)
}
}
var gz *gzip.Writer
w, gz = gzipWriter(w, r)
err = this.pumpMessages(w, r, realIp, fetcher, limit, myAppid, hisAppid, topic, ver, group, delayedAck)
if err != nil {
// e,g. broken pipe, io timeout, client gone
// e,g. kafka: error while consuming app1.foobar.v1/0: EOF (kafka was shutdown)
log.Error("sub[%s/%s] %s(%s) {%s ack:%s P:%s O:%s UA:%s} %v",
myAppid, group, r.RemoteAddr, realIp, rawTopic, query.Get("ack"), partition, offset, r.Header.Get("User-Agent"), err)
if err != ErrClientGone {
if store.DefaultSubStore.IsSystemError(err) {
writeServerError(w, err.Error())
} else {
this.subMetrics.ClientError.Mark(1)
if Options.BadGroupRateLimit && !this.throttleBadGroup.Pour(realGroup, 1) {
writeQuotaExceeded(w)
} else {
writeBadRequest(w, err.Error())
}
}
} else if Options.BadGroupRateLimit && !store.DefaultSubStore.IsSystemError(err) {
this.throttleBadGroup.Pour(realGroup, 1)
}
// fetch.Close might be called by subServer.closedConnCh
if err = fetcher.Close(); err != nil {
log.Error("sub[%s/%s] %s(%s) %s %v", myAppid, group, r.RemoteAddr, realIp, rawTopic, err)
}
} else if w.Header().Get("Connection") == "close" {
// max req reached, synchronously close this connection
if err = fetcher.Close(); err != nil {
log.Error("sub[%s/%s] %s(%s) %s %v", myAppid, group, r.RemoteAddr, realIp, rawTopic, err)
}
}
if Options.BadGroupRateLimit {
// record the good consumer group client
this.goodGroupLock.Lock()
this.goodGroupClients[r.RemoteAddr] = struct{}{}
this.goodGroupLock.Unlock()
}
if gz != nil {
gz.Close()
}
}
func (p *plug) daemon() {
var diskwriter *csv.Writer
var gzipwriter *gzip.Writer
fmt.Println("starting foreground daemon ;-)")
// write csv from disk into the buffer
fmt.Println("loading history (" + p.csvfile + ")")
p.buffer.Write(readcsv(p.csvfile))
// create/append the csvfile on disk
csvfile, err := os.OpenFile(p.csvfile, os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0600)
if err != nil {
log.Fatal("Error:", err)
}
defer csvfile.Close()
// create a bufferwriter (appends to csv already in p.buffer)
bufferwriter := csv.NewWriter(&p.buffer)
// compressed or not
if strings.Contains(p.csvfile, ".gz") {
gzipwriter, _ = gzip.NewWriterLevel(csvfile, gzip.BestCompression)
defer gzipwriter.Close()
// wrap csv around gzipwriter
diskwriter = csv.NewWriter(gzipwriter)
} else {
// create a diskwriter (appends to csv on disk)
diskwriter = csv.NewWriter(csvfile)
}
// connect via telnet to the device and login
conn, err := p.DialTimeout("tcp", p.device, time.Duration(time.Second*30))
if err != nil {
log.Fatal("can't connect")
}
// create http handlers
http.HandleFunc("/quit", webQuitHandler(diskwriter, gzipwriter, csvfile))
http.HandleFunc("/history", webHistoryHandler)
http.HandleFunc("/stream", webStreamHandler)
http.HandleFunc("/read.csv", webReadCsvHandler(p))
http.HandleFunc("/read.json", webReadJsonHandler(p))
// needed for occasionally flushing on a newline
recordcount := 0
// start infinite polling loop
for {
// measure how long it takes
start := time.Now()
// specify correct format for dygraph
record := []string{start.Format("2006/01/02 15:04:05")}
// get statistics from device and cleanup
status := sendln(conn, plugGetInfoStats, '#')
status = strings.Replace(status, plugGetInfoStats+"\r\n", "", 1)
status = strings.Replace(status, "#", "", 1)
// split up the 4 results a newline
results := strings.SplitN(status, "\r\n", 4)
re := regexp.MustCompile("01(I|V|W|E)[0-9]+ 0*([0-9]+)")
// for each GetInfo result, do a regexp match, adjust value and create a CSV record
for i, result := range results {
match := re.FindStringSubmatch(result)
value := "0"
// check if we got the right size of slice
if len(match) == 3 {
value = match[2]
}
temp, _ := strconv.ParseFloat(value, 32)
switch i {
case 0:
// mAmp/10 -> Amp
value = strconv.FormatFloat(temp/10000, 'f', 2, 32)
// centiWatt -> Watt
case 1:
value = strconv.FormatFloat(temp/100, 'f', 2, 32)
// mWatt/h -> Watt/h | mVolt -> Volt
case 2, 3:
value = strconv.FormatFloat(temp/1000, 'f', 2, 32)
}
record = append(record, value)
recordcount += 1
}
// latestentry is needed in JSON for the realtime streaming
p.latestEntry, _ = json.Marshal(record)
// write the record to disk
err := diskwriter.Write(record)
if err != nil {
fmt.Println("Error:", err)
}
// write the record to buffer (in memory)
err = bufferwriter.Write(record)
if err != nil {
fmt.Println("Error:", err)
}
// flush disk every 25 records
if recordcount%100 == 0 {
diskwriter.Flush()
if strings.Contains(p.csvfile, ".gz") {
gzipwriter.Flush()
}
}
// flush memory immediately
bufferwriter.Flush()
if debug {
fmt.Print(record)
fmt.Println(" took", time.Since(start))
}
// sleep the right amount of time
time.Sleep(time.Second*time.Duration(p.delay) - time.Since(start))
}
}
//go:generate goannotation $GOFILE
// @rest GET /v1/raw/msgs/:cluster/:topic?group=xx&batch=10&reset=<newest|oldest>
func (this *subServer) subRawHandler(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
var (
cluster string
topic string
myAppid string
reset string
group string
limit int // max messages to include in the message set
err error
)
if !Options.DisableMetrics {
this.subMetrics.SubTryQps.Mark(1)
}
query := r.URL.Query()
group = query.Get("group")
reset = query.Get("reset")
realIp := getHttpRemoteIp(r)
if !manager.Default.ValidateGroupName(r.Header, group) {
log.Error("sub raw -(%s): illegal group: %s", realIp, group)
this.subMetrics.ClientError.Mark(1)
writeBadRequest(w, "illegal group")
return
}
limit, err = getHttpQueryInt(&query, "batch", 1)
if err != nil {
log.Error("sub raw -(%s): illegal batch: %v", realIp, err)
this.subMetrics.ClientError.Mark(1)
writeBadRequest(w, "illegal batch")
return
}
if limit > Options.MaxSubBatchSize && Options.MaxSubBatchSize > 0 {
limit = Options.MaxSubBatchSize
}
topic = params.ByName(UrlParamTopic)
cluster = params.ByName("cluster")
myAppid = r.Header.Get(HttpHeaderAppid)
log.Debug("sub raw[%s/%s] %s(%s) {%s/%s batch:%d UA:%s}",
myAppid, group, r.RemoteAddr, realIp, cluster, topic, limit, r.Header.Get("User-Agent"))
if !Options.DisableMetrics {
this.subMetrics.SubQps.Mark(1)
}
fetcher, err := store.DefaultSubStore.Fetch(cluster, topic,
myAppid+"."+group, r.RemoteAddr, realIp, reset, Options.PermitStandbySub)
if err != nil {
// e,g. kafka was totally shutdown
// e,g. too many consumers for the same group
log.Error("sub raw[%s/%s] %s(%s) {%s/%s batch:%d UA:%s} %v",
myAppid, group, r.RemoteAddr, realIp, cluster, topic, limit, r.Header.Get("User-Agent"), err)
if store.DefaultSubStore.IsSystemError(err) {
writeServerError(w, err.Error())
} else {
writeBadRequest(w, err.Error())
}
return
}
var gz *gzip.Writer
w, gz = gzipWriter(w, r)
err = this.pumpRawMessages(w, r, realIp, fetcher, limit, myAppid, topic, group)
if err != nil {
// e,g. broken pipe, io timeout, client gone
// e,g. kafka: error while consuming app1.foobar.v1/0: EOF (kafka was shutdown)
log.Error("sub raw[%s/%s] %s(%s) {%s/%s batch:%d UA:%s} %v",
myAppid, group, r.RemoteAddr, realIp, cluster, topic, limit, r.Header.Get("User-Agent"), err)
if err != ErrClientGone {
if store.DefaultSubStore.IsSystemError(err) {
writeServerError(w, err.Error())
} else {
writeBadRequest(w, err.Error())
}
}
// fetch.Close might be called by subServer.closedConnCh
if err = fetcher.Close(); err != nil {
log.Error("sub raw[%s/%s] %s(%s) {%s/%s batch:%d UA:%s} %v",
myAppid, group, r.RemoteAddr, realIp, cluster, topic, limit, r.Header.Get("User-Agent"), err)
}
}
if gz != nil {
gz.Close()
}
}
func runBuild(args []string) (exit int) {
if len(args) != 2 {
stderr("build: Must provide directory and output file")
return 1
}
root := args[0]
tgt := args[1]
ext := filepath.Ext(tgt)
if ext != schema.ACIExtension {
stderr("build: Extension must be %s (given %s)", schema.ACIExtension, ext)
return 1
}
mode := os.O_CREATE | os.O_WRONLY
if buildOverwrite {
mode |= os.O_TRUNC
} else {
mode |= os.O_EXCL
}
fh, err := os.OpenFile(tgt, mode, 0644)
if err != nil {
if os.IsExist(err) {
stderr("build: Target file exists (try --overwrite)")
} else {
stderr("build: Unable to open target %s: %v", tgt, err)
}
return 1
}
var gw *gzip.Writer
var r io.WriteCloser = fh
if !buildNocompress {
gw = gzip.NewWriter(fh)
r = gw
}
tr := tar.NewWriter(r)
defer func() {
tr.Close()
if !buildNocompress {
gw.Close()
}
fh.Close()
if exit != 0 && !buildOverwrite {
os.Remove(tgt)
}
}()
// TODO(jonboulle): stream the validation so we don't have to walk the rootfs twice
if err := aci.ValidateLayout(root); err != nil {
stderr("build: Layout failed validation: %v", err)
return 1
}
mpath := filepath.Join(root, aci.ManifestFile)
b, err := ioutil.ReadFile(mpath)
if err != nil {
stderr("build: Unable to read Image Manifest: %v", err)
return 1
}
var im schema.ImageManifest
if err := im.UnmarshalJSON(b); err != nil {
stderr("build: Unable to load Image Manifest: %v", err)
return 1
}
iw := aci.NewImageWriter(im, tr)
err = filepath.Walk(root, aci.BuildWalker(root, iw))
if err != nil {
stderr("build: Error walking rootfs: %v", err)
return 1
}
err = iw.Close()
if err != nil {
stderr("build: Unable to close image %s: %v", tgt, err)
return 1
}
return
}
func (this *ResultView) Publish(ctxt *web.Context) (err error) {
names := mvc.GetMvcMeta(ctxt)
if names[mvc.MVC_ACTION] == "" {
names[mvc.MVC_ACTION] = "_"
}
var tmpl *template.Template
var ext string
/*
var mc = memcache.New("127.0.0.1:11211")
var item *memcache.Item
if item, err = mc.Get(ctxt.Request.RequestURI); err == nil {
ctxt.SetHeader("Content-Type", GetContentType(ext))
if ctxt.ReqHeaderHas("Accept-Encoding", "gzip") {
ctxt.SetHeader("Content-Encoding", "gzip")
}
ctxt.Response.Write(item.Value)
return
}
*/
tmpl, ext, err = this.getTmpl(names)
if err == nil {
var isjsonp bool
var jsonp string
var method = ctxt.Method()
if ext == ".jsonp" {
jsonp = ctxt.RequestValue("callback")
if jsonp == "" {
jsonp = ctxt.RequestValue("jsonp")
}
if (method == "GET" || method == "HEAD") && jsonp != "" && ext == ".jsonp" && validate.IsJSONPCallback(jsonp) {
ctxt.SetHeader("Content-Type", "application/javascript")
ctxt.SetHeader("Content-Disposition", "attachment; filename=jsonp.jsonp")
ctxt.SetHeader("X-Content-Type-Options", "nosniff")
isjsonp = true
} else {
err = errors.New("Invalid jsonp callback")
log.Println(err)
ctxt.SetErrorCode(403)
return
}
} else {
ctxt.SetHeader("Content-Type", GetContentType(ext))
}
if method != "HEAD" {
var err error
var b *bytes.Buffer = bytes.NewBuffer(make([]byte, 0, 5120))
var tw io.Writer = io.MultiWriter(ctxt.Response, b)
var gzipwriter *gzip.Writer
if ctxt.ReqHeaderHas("Accept-Encoding", "gzip") {
ctxt.SetHeader("Content-Encoding", "gzip")
gzipwriter, _ = gzip.NewWriterLevel(tw, gzip.BestSpeed)
tw = gzipwriter
}
ctxt.SetHeader("Vary", "Accept-Encoding")
ctxt.Response.WriteHeader(200)
if isjsonp {
writeJsonpStart(jsonp, tw)
}
err = tmpl.Execute(tw, this.VM)
if err != nil {
// Header already sent... multiple write headers
//panic(err)
log.Println(err)
}
if isjsonp {
writeJsonpEnd(jsonp, tw)
}
if gzipwriter != nil {
gzipwriter.Close()
}
//mc.Set(&memcache.Item{Key: ctxt.Request.RequestURI, Value: b.Bytes(), Expiration: 3600})
if flushw, ok := ctxt.RootResponse().(http.Flusher); ok {
flushw.Flush()
}
} else {
ctxt.Response.WriteHeader(200)
}
} else {
log.Println(err)
ctxt.SetErrorCode(500)
}
return
}
func calcFileInfo(fi *FileInfo) {
fmt.Printf("calcFileInfo: '%s'\n", fi.Path)
const BufSize = 16 * 1024
var buf [BufSize]byte
r, err := os.Open(fi.Path)
fataliferr(err)
defer r.Close()
sha1 := sha1.New()
md5Hash := md5.New()
fi.ShouldCompress = false
tryCompressFirsBlock := shouldTryCompressFile(fi.Path)
var gzw *gzip.Writer
compressedData := &bytes.Buffer{}
fi.Size = 0
fi.CompressedData = nil
for {
n, err := r.Read(buf[:])
if err == io.EOF {
break
}
d := buf[:n]
fataliferr(err)
fatalif(n == 0, "n is 0")
fi.Size += n
_, err = sha1.Write(d)
fataliferr(err)
_, err = md5Hash.Write(d)
fataliferr(err)
if tryCompressFirsBlock {
tryCompressFirsBlock = false
gz, err := gzip.NewWriterLevel(compressedData, gzip.BestCompression)
fataliferr(err)
_, err = gz.Write(d)
fataliferr(err)
gz.Close()
compressedSize := compressedData.Len()
saved := n - compressedSize
// relatively high threshold of 20% savings on compression
fi.ShouldCompress = saved > 0 && perc(compressedSize, saved) > 20
diff := n - compressedSize
fmt.Printf(" should compress: %v, %d => %d (%d %.2f%%)\n", fi.ShouldCompress, n, compressedSize, diff, perc(n, diff))
if fi.ShouldCompress {
compressedData = &bytes.Buffer{}
gzw, err = gzip.NewWriterLevel(compressedData, gzip.BestCompression)
fataliferr(err)
}
}
if gzw != nil {
_, err = gzw.Write(d)
fataliferr(err)
}
}
sha1Sum := sha1.Sum(nil)
fi.Sha1Hex = fmt.Sprintf("%x", sha1Sum)
if gzw != nil {
gzw.Close()
compressedSize := compressedData.Len()
// only use compressed if compressed by at least 5%
if compressedSize+(compressedSize/20) < fi.Size {
fi.CompressedData = compressedData.Bytes()
}
}
md5Sum := md5Hash.Sum(nil)
fi.Md5Hex = fmt.Sprintf("%x", md5Sum)
// if compressed, md5 is of the compressed content
if fi.CompressedData != nil {
md5Sum2 := md5.Sum(fi.CompressedData)
fi.Md5Hex = fmt.Sprintf("%x", md5Sum2[:])
}
fi.S3PathSha1Part = sha1HexToS3Path(fi.Sha1Hex)
ext := strings.ToLower(filepath.Ext(fi.Path))
if fi.CompressedData != nil {
fi.S3FullPath = fi.S3PathSha1Part + ".gz" + ext
} else {
fi.S3FullPath = fi.S3PathSha1Part + ext
}
fmt.Printf(" sha1: %s\n", fi.Sha1Hex)
fmt.Printf(" md5: %s\n", fi.Md5Hex)
fmt.Printf(" s3: %s\n", fi.S3FullPath)
fmt.Printf(" size: %d\n", fi.Size)
if fi.CompressedData != nil {
sizedCompressed := len(fi.CompressedData)
saved := fi.Size - sizedCompressed
fmt.Printf(" size compressed: %d (saves %d %.2f%%)\n", sizedCompressed, saved, perc(fi.Size, saved))
}
}
// BuildACI takes an input directory that conforms to the ACI specification,
// and outputs an optionally compressed ACI image.
func BuildACI(root string, tgt string, overwrite bool, nocompress bool) (ret error) {
ext := filepath.Ext(tgt)
if ext != schema.ACIExtension {
ret = fmt.Errorf("build: Extension must be %s (given %s)", schema.ACIExtension, ext)
return
}
mode := os.O_CREATE | os.O_WRONLY
if overwrite {
mode |= os.O_TRUNC
} else {
mode |= os.O_EXCL
}
fh, err := os.OpenFile(tgt, mode, 0644)
if err != nil {
if os.IsExist(err) {
ret = fmt.Errorf("build: Target file exists")
} else {
ret = fmt.Errorf("build: Unable to open target %s: %v", tgt, err)
}
return
}
var gw *gzip.Writer
var r io.WriteCloser = fh
if !nocompress {
gw = gzip.NewWriter(fh)
r = gw
}
tr := tar.NewWriter(r)
defer func() {
tr.Close()
if !nocompress {
gw.Close()
}
fh.Close()
if ret != nil && !overwrite {
os.Remove(tgt)
}
}()
// TODO(jonboulle): stream the validation so we don't have to walk the rootfs twice
if err := aci.ValidateLayout(root); err != nil {
ret = fmt.Errorf("build: Layout failed validation: %v", err)
return
}
mpath := filepath.Join(root, aci.ManifestFile)
b, err := ioutil.ReadFile(mpath)
if err != nil {
ret = fmt.Errorf("build: Unable to read Image Manifest: %v", err)
return
}
var im schema.ImageManifest
if err := im.UnmarshalJSON(b); err != nil {
ret = fmt.Errorf("build: Unable to load Image Manifest: %v", err)
return
}
iw := aci.NewImageWriter(im, tr)
err = filepath.Walk(root, aci.BuildWalker(root, iw))
if err != nil {
ret = fmt.Errorf("build: Error walking rootfs: %v", err)
return
}
err = iw.Close()
if err != nil {
ret = fmt.Errorf("build: Unable to close image %s: %v", tgt, err)
return
}
return nil
}
func (svc *Service) ServeHTTP(w http.ResponseWriter, r *http.Request) {
var match []string
var parms []string
var authparms map[string]interface{}
var i, j int
var endpoint UrlNode
var resp Response
var ok bool
var err error
var mrsh Marshaler
var umrsh Unmarshaler
var outWriter io.Writer
var encRequest []string
var enc, e string
var gzw *gzip.Writer
var header string
var qry string
var buf []byte
var httpstat int
var authinfo interface{}
Goose.Serve.Logf(1, "Access %s from %s", r.URL.Path, r.RemoteAddr)
if r.URL.Path == "/crtlogin" {
w.WriteHeader(http.StatusOK)
w.Write([]byte(" "))
return
}
hd := w.Header()
hd.Add("Access-Control-Allow-Origin", "*")
hd.Add("Vary", "Origin")
Goose.Serve.Logf(6, "Will check if swagger.json is requested: %#v", svc.Swagger)
if r.URL.Path == "/swagger.json" {
defer func() {
if r := recover(); r != nil {
Goose.Serve.Logf(1, "Internal server error writing response body for swagger.json: %#v", r)
}
}()
hd.Add("Content-Type", "application/json")
// w.WriteHeader(http.StatusOK)
Goose.Serve.Logf(6, "Received request of swagger.json: %#v", svc.Swagger)
// mrsh = json.NewEncoder(w)
// err = mrsh.Encode(svc.Swagger)
buf, err = json.Marshal(svc.Swagger)
if err != nil {
Goose.Serve.Logf(1, "Internal server error marshaling swagger.json: %s", err)
}
hd.Add("Content-Length", fmt.Sprintf("%d", len(buf)))
_, err = io.WriteString(w, string(buf))
if err != nil {
Goose.Serve.Logf(1, "Internal server error writing response body for swagger.json: %s", err)
}
return
}
match = svc.Matcher.FindStringSubmatch(r.Method + ":" + r.URL.Path)
Goose.Serve.Logf(6, "Matcher found this %#v\n", match)
if len(match) == 0 {
Goose.Serve.Logf(1, "Invalid service handler "+r.URL.Path)
w.WriteHeader(http.StatusBadRequest)
w.Write([]byte("Invalid service handler " + r.URL.Path))
return
}
parms = []string{}
authparms = map[string]interface{}{}
// for _, endpoint = range svc.Svc {
for i = 1; i < len(match); i++ {
Goose.Serve.Logf(5, "trying %s:%s with endpoint: %s", r.Method, r.URL.Path, svc.Svc[svc.MatchedOps[i-1]].Path)
if len(match[i]) > 0 {
Goose.Serve.Logf(5, "Found endpoint %s for: %s", svc.Svc[svc.MatchedOps[i-1]].Path, r.URL.Path)
endpoint = svc.Svc[svc.MatchedOps[i-1]]
for j = i + 1; (j < len(match)) && (len(match[j]) > 0); j++ {
authparms[endpoint.ParmNames[j-i-1]] = match[j]
}
parms = match[i+1 : j]
j -= i + 1
break
}
}
Goose.Serve.Logf(5, "Original parms: %#v", parms)
if r.Method == "OPTIONS" {
Goose.Serve.Logf(4, "CORS Options called on "+r.URL.Path)
hd.Add("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE")
//Access-Control-Allow-Origin: http://foo.example
//Access-Control-Allow-Methods: POST, GET, OPTIONS
//Access-Control-Allow-Headers: X-PINGOTHER
//Access-Control-Allow-Origin: *
hd.Add("Access-Control-Allow-Headers", strings.Join(endpoint.Headers, ", "))
w.WriteHeader(http.StatusOK)
w.Write([]byte("OK"))
return
}
if len(endpoint.Query) > 0 {
r.ParseForm()
for _, qry = range endpoint.Query {
if _, ok := r.Form[qry]; !ok {
Goose.Serve.Logf(1, "%s: %s", ErrorMissingRequiredQueryField, qry)
return
}
parms = append(parms, r.Form[qry][0]) // TODO array support
authparms[endpoint.ParmNames[j]] = r.Form[qry][0]
j++
}
}
Goose.Serve.Logf(5, "Parms with query: %#v", parms)
for _, header = range endpoint.Headers {
if (r.Header[header] == nil) || (len(r.Header[header]) == 0) {
Goose.Serve.Logf(1, "%s: %s", ErrorMissingRequiredHTTPHeader, header)
Goose.Serve.Logf(6, "HTTP Headers found: %#v", r.Header)
return
}
parms = append(parms, r.Header[header][0]) // TODO array support
authparms[endpoint.ParmNames[j]] = r.Header[header][0]
j++
}
Goose.Serve.Logf(5, "Parms with headers: %#v", parms)
Goose.Serve.Logf(5, "checking marshalers: %s, %s", endpoint.consumes, endpoint.produces)
if endpoint.consumes == "application/json" {
umrsh = json.NewDecoder(r.Body)
} else if endpoint.consumes == "application/xml" {
umrsh = xml.NewDecoder(r.Body)
} else if endpoint.consumes == "multipart/form-data" {
// bdy, err = ioutil.ReadAll(r.Body)
// ioutil.WriteFile("upload.bin", bdy, 0600)
// Goose.Serve.Logf(6,"body=%s",bdy)
umrsh, err = NewMultipartUnmarshaler(r, endpoint.Body)
if err != nil {
Goose.Serve.Logf(1, "Error initializing multipart/formdata unmarshaller for %s: %s", r.URL.Path, err)
return
}
}
Goose.Serve.Logf(6, "umrsh=%#v", umrsh)
outWriter = w
if encRequest, ok = r.Header["Accept-Encoding"]; ok {
Goose.Serve.Logf(6, "Accept-Encoding: %#v", encRequest)
if svc.AllowGzip == true {
Goose.Serve.Logf(5, "svc.AllowGzip == true")
gzipcheck:
for _, enc = range encRequest {
for _, e = range strings.Split(enc, ", ") {
Goose.Serve.Logf(5, "Encoding: %s", e)
if e == "gzip" {
Goose.Serve.Logf(5, "Using gzip")
gzw = gzip.NewWriter(w)
outWriter = gzHttpResponseWriter{
Writer: gzw,
ResponseWriter: w,
}
defer gzw.Close()
hd.Add("Vary", "Accept-Encoding")
hd.Add("Content-Encoding", "gzip")
break gzipcheck
}
}
}
}
}
if endpoint.produces == "application/json" {
mrsh = json.NewEncoder(outWriter)
hd.Add("Content-Type", "application/json")
} else if endpoint.produces == "application/xml" {
mrsh = xml.NewEncoder(outWriter)
hd.Add("Content-Type", "application/xml")
}
Goose.Serve.Logf(5, "svc.Access: %d", svc.Access)
err = nil
if svc.Access != AccessNone {
httpstat, authinfo, err = svc.Authorizer.Authorize(endpoint.Path, authparms, r.RemoteAddr, r.TLS, svc.SavePending)
}
if err == nil {
Goose.Serve.Logf(5, "Authorization returned HTTP status %d", httpstat)
if svc.Access == AccessAuthInfo || svc.Access == AccessVerifyAuthInfo {
resp = endpoint.Handle(parms, umrsh, authinfo)
} else {
resp = endpoint.Handle(parms, umrsh, nil)
}
if resp.Status != 0 {
for k, v := range resp.Header {
hd.Add(k, v)
}
w.WriteHeader(resp.Status)
}
if resp.Status != http.StatusNoContent {
err = mrsh.Encode(resp.Body)
if err != nil {
Goose.Serve.Logf(1, "Internal server error writing response body (no status sent to client): %s", err)
return
}
}
} else {
Goose.Serve.Logf(1, "Authorization failure with HTTP Status %d and error %s", httpstat, err)
w.WriteHeader(httpstat)
if httpstat != http.StatusNoContent {
err = mrsh.Encode(fmt.Sprintf("%s", err))
if err != nil {
Goose.Serve.Logf(1, "Internal server error writing response body (no status sent to client): %s", err)
return
}
}
}
}
// PutWriter closes and returns a gzip.Writer to the pool
// so that it can be reused via GetWriter.
func (pool *GzipPool) PutWriter(writer *gzip.Writer) {
writer.Close()
pool.writers.Put(writer)
}
func createACI(dir string, imageName string) error {
var errStr string
var errRes error
buildNocompress := true
root := dir
tgt := imageName
ext := filepath.Ext(tgt)
if ext != schema.ACIExtension {
errStr = fmt.Sprintf("build: Extension must be %s (given %s)", schema.ACIExtension, ext)
errRes = errors.New(errStr)
return errRes
}
if err := aci.ValidateLayout(root); err != nil {
if e, ok := err.(aci.ErrOldVersion); ok {
if globalFlags.Debug {
stderr("build: Warning: %v. Please update your manifest.", e)
}
} else {
errStr = fmt.Sprintf("build: Layout failed validation: %v", err)
errRes = errors.New(errStr)
return errRes
}
}
mode := os.O_CREATE | os.O_WRONLY | os.O_TRUNC
fh, err := os.OpenFile(tgt, mode, 0644)
if err != nil {
errStr = fmt.Sprintf("build: Unable to open target %s: %v", tgt, err)
errRes = errors.New(errStr)
return errRes
}
var gw *gzip.Writer
var r io.WriteCloser = fh
if !buildNocompress {
gw = gzip.NewWriter(fh)
r = gw
}
tr := tar.NewWriter(r)
defer func() {
tr.Close()
if !buildNocompress {
gw.Close()
}
fh.Close()
}()
mpath := filepath.Join(root, aci.ManifestFile)
b, err := ioutil.ReadFile(mpath)
if err != nil {
errStr = fmt.Sprintf("build: Unable to read Image Manifest: %v", err)
errRes = errors.New(errStr)
return errRes
}
var im schema.ImageManifest
if err := im.UnmarshalJSON(b); err != nil {
errStr = fmt.Sprintf("build: Unable to load Image Manifest: %v", err)
errRes = errors.New(errStr)
return errRes
}
iw := aci.NewImageWriter(im, tr)
err = filepath.Walk(root, aci.BuildWalker(root, iw))
if err != nil {
errStr = fmt.Sprintf("build: Error walking rootfs: %v", err)
errRes = errors.New(errStr)
return errRes
}
err = iw.Close()
if err != nil {
errStr = fmt.Sprintf("build: Unable to close image %s: %v", tgt, err)
errRes = errors.New(errStr)
return errRes
}
return nil
}
func (s *server) serveRep(rw http.ResponseWriter, req *http.Request) {
memberID := s.validateConnection(rw, req)
if memberID == "" {
return
}
s.logger.Infof("Peer Member %s connected from address %s", memberID, req.RemoteAddr)
peer := &peer{memberID: cluster.MemberID(memberID), msgChannel: make(chan *sse)}
// Signal that we have a new connection
s.newPeers <- peer
// Remove this client from the map of connected clients
// when this handler exits.
defer func() {
s.closingPeers <- peer
}()
// Listen to connection close and un-register messageChan
notify := rw.(http.CloseNotifier).CloseNotify()
go func() {
<-notify
s.closingPeers <- peer
s.logger.Infof("Peer member %s has been disconnected", memberID)
}()
// Send the response header to client side
flusher := rw.(http.Flusher)
gzipped := strings.Contains(req.Header.Get("Accept-Encoding"), "gzip")
var gzipWriter *gzip.Writer
var err error
if gzipped {
// override the response writer to be a gzipped writer
if gzipWriter, err = gzip.NewWriterLevel(rw, gzip.BestSpeed); err == nil {
rw = gzipResponseWrapper{Writer: gzipWriter, ResponseWriter: rw}
rw.Header().Set("Content-Encoding", "gzip")
flusher = rw.(http.Flusher)
defer func() {
gzipWriter.Close()
}()
} else {
s.logger.Warnf("Gzip wrapper creation for %s from %s failed: %v. Falling back to uncompressed HTTP", memberID, req.RemoteAddr, err)
}
}
encoder := newEncoder(rw)
ticker := time.NewTicker(time.Millisecond * 100).C
for {
select {
case ev, ok := <-peer.msgChannel:
if !ok {
return
}
// Write to the ResponseWriter
// Server Sent Events compatible
if err := encoder.Encode(ev); err != nil {
s.logger.WithFields(log.Fields{
"error": err,
}).Errorf("Failed to encode replication message to member %s", memberID)
break
}
case <-ticker:
flusher.Flush()
}
}
}
// ReturnWriter returns a gzip.Writer to the pool that can
// late be reused via GetWriter.
// Don't close the writer, Flush will be called before returning
// it to the pool.
func (pool *GzipPool) ReturnWriter(writer *gzip.Writer) {
writer.Close()
pool.pool.Put(writer)
}