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Memory map kafka checkpoint file #1950

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Memory map kafka checkpoint file #1950

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1 change: 1 addition & 0 deletions cmake/externals.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -161,6 +161,7 @@ git_clone(https://github.com/rafrombrc/gospec 2e46585948f47047b0c217d00fa24bbc4e
git_clone(https://github.com/crankycoder/xmlpath 670b185b686fd11aa115291fb2f6dc3ed7ebb488)
git_clone(https://github.com/thoj/go-ircevent 90dc7f966b95d133f1c65531c6959b52effd5e40)
git_clone(https://github.com/cactus/gostrftime d329f83c5ce9c416f8983f0a0044734db54ee24d)
git_clone(https://github.com/edsrzf/mmap-go 935e0e8a636ca4ba70b713f3e38a19e1b77739e8)

git_clone(https://github.com/golang/snappy 723cc1e459b8eea2dea4583200fd60757d40097a)
git_clone(https://github.com/eapache/go-resiliency v1.0.0)
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15 changes: 11 additions & 4 deletions plugins/kafka/kafka_input.go
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,7 @@ import (
"time"

"github.com/Shopify/sarama"
"github.com/edsrzf/mmap-go"
"github.com/mozilla-services/heka/message"
"github.com/mozilla-services/heka/pipeline"
"github.com/mozilla-services/heka/plugins/tcp"
Expand Down Expand Up @@ -74,6 +75,7 @@ type KafkaInput struct {
pConfig *pipeline.PipelineConfig
ir pipeline.InputRunner
checkpointFile *os.File
checkpoint mmap.MMap
stopChan chan bool
name string
checkpointFilename string
Expand Down Expand Up @@ -109,13 +111,18 @@ func fileExists(path string) bool {

func (k *KafkaInput) writeCheckpoint(offset int64) (err error) {
if k.checkpointFile == nil {
if k.checkpointFile, err = os.OpenFile(k.checkpointFilename,
os.O_WRONLY|os.O_SYNC|os.O_CREATE|os.O_TRUNC, 0644); err != nil {
if k.checkpointFile, err = os.Create(k.checkpointFilename); err != nil {
return
}

binary.Write(k.checkpointFile, binary.LittleEndian, int64(0))
if k.checkpoint, err = mmap.Map(k.checkpointFile, mmap.RDWR, 0); err != nil {
return
}
}
k.checkpointFile.Seek(0, 0)
err = binary.Write(k.checkpointFile, binary.LittleEndian, &offset)

binary.LittleEndian.PutUint64(k.checkpoint, uint64(offset))

return
}

Expand Down