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读取文件时增加线程数限制

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GoEdgeLab
2024-04-29 22:01:55 +08:00
parent fe52046fba
commit 43a594198e
5 changed files with 133 additions and 13 deletions
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57
internal/nodes/http_request_cache.go
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@@ -232,7 +232,12 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
if this.web.Compression != nil && this.web.Compression.IsOn {
_, encoding, ok := this.web.Compression.MatchAcceptEncoding(this.RawReq.Header.Get("Accept-Encoding"))
if ok {
reader, _ = storage.OpenReader(key+caches.SuffixWebP+caches.SuffixCompression+encoding, useStale, false)
reader, err = storage.OpenReader(key+caches.SuffixWebP+caches.SuffixCompression+encoding, useStale, false)
if err != nil && caches.IsBusyError(err) {
this.varMapping["cache.status"] = "BUSY"
this.cacheRef = nil
return
}
if reader != nil {
tags = append(tags, "webp", encoding)
}
@@ -244,7 +249,12 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
if webPIsEnabled && !isPartialRequest &&
!isHeadMethod &&
reader == nil {
reader, _ = storage.OpenReader(key+caches.SuffixWebP, useStale, false)
reader, err = storage.OpenReader(key+caches.SuffixWebP, useStale, false)
if err != nil && caches.IsBusyError(err) {
this.varMapping["cache.status"] = "BUSY"
this.cacheRef = nil
return
}
if reader != nil {
this.writer.cacheReaderSuffix = caches.SuffixWebP
tags = append(tags, "webp")
@@ -256,7 +266,12 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
if this.web.Compression != nil && this.web.Compression.IsOn {
_, encoding, ok := this.web.Compression.MatchAcceptEncoding(this.RawReq.Header.Get("Accept-Encoding"))
if ok {
reader, _ = storage.OpenReader(key+caches.SuffixCompression+encoding, useStale, false)
reader, err = storage.OpenReader(key+caches.SuffixCompression+encoding, useStale, false)
if err != nil && caches.IsBusyError(err) {
this.varMapping["cache.status"] = "BUSY"
this.cacheRef = nil
return
}
if reader != nil {
tags = append(tags, encoding)
}
@@ -269,6 +284,11 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
var partialRanges []rangeutils.Range
if reader == nil {
reader, err = storage.OpenReader(key, useStale, false)
if err != nil && caches.IsBusyError(err) {
this.varMapping["cache.status"] = "BUSY"
this.cacheRef = nil
return
}
if err != nil && this.cacheRef.AllowPartialContent {
// 尝试读取分片的缓存内容
if len(rangeHeader) == 0 && this.cacheRef.ForcePartialContent {
@@ -277,7 +297,11 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
}
if len(rangeHeader) > 0 {
pReader, ranges := this.tryPartialReader(storage, key, useStale, rangeHeader, this.cacheRef.ForcePartialContent)
pReader, ranges, goNext := this.tryPartialReader(storage, key, useStale, rangeHeader, this.cacheRef.ForcePartialContent)
if !goNext {
this.cacheRef = nil
return
}
if pReader != nil {
isPartialCache = true
reader = pReader
@@ -648,26 +672,33 @@ func (this *HTTPRequest) addExpiresHeader(expiresAt int64) {
}
// 尝试读取区间缓存
func (this *HTTPRequest) tryPartialReader(storage caches.StorageInterface, key string, useStale bool, rangeHeader string, forcePartialContent bool) (caches.Reader, []rangeutils.Range) {
func (this *HTTPRequest) tryPartialReader(storage caches.StorageInterface, key string, useStale bool, rangeHeader string, forcePartialContent bool) (resultReader caches.Reader, ranges []rangeutils.Range, goNext bool) {
goNext = true
// 尝试读取Partial cache
if len(rangeHeader) == 0 {
return nil, nil
return
}
ranges, ok := httpRequestParseRangeHeader(rangeHeader)
if !ok {
return nil, nil
return
}
pReader, pErr := storage.OpenReader(key+caches.SuffixPartial, useStale, true)
if pErr != nil {
return nil, nil
if caches.IsBusyError(pErr) {
this.varMapping["cache.status"] = "BUSY"
goNext = false
return
}
return
}
partialReader, ok := pReader.(*caches.PartialFileReader)
if !ok {
_ = pReader.Close()
return nil, nil
return
}
var isOk = false
defer func() {
@@ -681,7 +712,7 @@ func (this *HTTPRequest) tryPartialReader(storage caches.StorageInterface, key s
len(ranges) > 0 &&
ranges[0][1] < 0 &&
!partialReader.IsCompleted() {
return nil, nil
return
}
// 检查范围
@@ -689,15 +720,15 @@ func (this *HTTPRequest) tryPartialReader(storage caches.StorageInterface, key s
for index, r := range ranges {
r1, ok := r.Convert(partialReader.MaxLength())
if !ok {
return nil, nil
return
}
r2, ok := partialReader.ContainsRange(r1)
if !ok {
return nil, nil
return
}
ranges[index] = r2
}
isOk = true
return pReader, ranges
return pReader, ranges, true
}