在dir模式下，文件采集出现 倒序的问题

shangmin-001 · shangmin-001 · commit ce6296edaaf9 · 2021-05-28T15:03:41.000+08:00
diff --git a/reader/dirx/dir_reader.go b/reader/dirx/dir_reader.go
@@ -126,7 +126,7 @@ func (dr *dirReader) Run() {
 
 			if err == nil && dr.halfLineCache[source] != "" {
 				dr.readLock.Lock()
-				dr.readcache += dr.halfLineCache[source]
+				dr.readcache = dr.halfLineCache[source] + dr.readcache
 				dr.halfLineCache[source] = ""
 				dr.readLock.Unlock()
 			}
diff --git a/reader/tailx/tailx.go b/reader/tailx/tailx.go
@@ -342,7 +342,7 @@ func (ar *ActiveReader) Run() {
 
 			if err == nil && ar.halfLineCache[source] != "" {
 				ar.cacheLineMux.Lock()
-				ar.readcache += ar.halfLineCache[source]
+				ar.readcache = ar.halfLineCache[source] + ar.readcache
 				ar.halfLineCache[source] = ""
 				ar.cacheLineMux.Unlock()
 			}

Original file line number	Diff line number	Diff line change
`@@ -126,7 +126,7 @@ func (dr *dirReader) Run() {`
`126`	`126`
`127`	`127`	`if err == nil && dr.halfLineCache[source] != "" {`
`128`	`128`	`dr.readLock.Lock()`
`129`		`- dr.readcache += dr.halfLineCache[source]`
	`129`	`+ dr.readcache = dr.halfLineCache[source] + dr.readcache`
`130`	`130`	`dr.halfLineCache[source] = ""`
`131`	`131`	`dr.readLock.Unlock()`
`132`	`132`	`}`
Original file line number	Diff line number	Diff line change
`@@ -342,7 +342,7 @@ func (ar *ActiveReader) Run() {`
`342`	`342`
`343`	`343`	`if err == nil && ar.halfLineCache[source] != "" {`
`344`	`344`	`ar.cacheLineMux.Lock()`
`345`		`- ar.readcache += ar.halfLineCache[source]`
	`345`	`+ ar.readcache = ar.halfLineCache[source] + ar.readcache`
`346`	`346`	`ar.halfLineCache[source] = ""`
`347`	`347`	`ar.cacheLineMux.Unlock()`
`348`	`348`	`}`