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working for in memory single log buffer

pull/1293/head
Chris Lu 5 years ago
parent
f373232227
commit
ce3cb25cfb
11 changed files with 270 additions and 189 deletions
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  1. 10
      weed/filer2/filer_notify.go
  2. 4
      weed/messaging/broker/broker_append.go
  3. 12
      weed/messaging/broker/broker_grpc_server_publish.go
  4. 69
      weed/messaging/broker/broker_grpc_server_subscribe.go
  5. 4
      weed/messaging/broker/topic_lock.go
  6. 2
      weed/messaging/client/publisher.go
  7. 10
      weed/pb/messaging.proto
  8. 184
      weed/pb/messaging_pb/messaging.pb.go
  9. 49
      weed/util/log_buffer/log_buffer.go
  10. 41
      weed/util/log_buffer/log_buffer_test.go
  11. 74
      weed/util/log_buffer/log_read.go

10
weed/filer2/filer_notify.go
View File

@ -1,6 +1,7 @@
package filer2
import (
"bytes"
"fmt"
"strings"
"time"
@ -81,8 +82,13 @@ func (f *Filer) logFlushFunc(startTime, stopTime time.Time, buf []byte) {
func (f *Filer) ReadLogBuffer(lastReadTime time.Time, eachEventFn func(fullpath string, eventNotification *filer_pb.EventNotification) error) (newLastReadTime time.Time, err error) {
var buf []byte
newLastReadTime, buf = f.metaLogBuffer.ReadFromBuffer(lastReadTime)
var bytesBuf *bytes.Buffer
bytesBuf = f.metaLogBuffer.ReadFromBuffer(lastReadTime)
if bytesBuf == nil {
return
}
defer f.metaLogBuffer.ReleaseMeory(bytesBuf)
buf := bytesBuf.Bytes()
var processedTs int64
for pos := 0; pos+4 < len(buf); {

4
weed/messaging/broker/broker_append.go
View File

@ -16,10 +16,6 @@ import (
func (broker *MessageBroker) appendToFile(targetFile string, topicConfig *messaging_pb.TopicConfiguration, data []byte) error {
if topicConfig.IsTransient {
return nil
}
assignResult, uploadResult, err2 := broker.assignAndUpload(topicConfig, data)
if err2 != nil {
return err2

12
weed/messaging/broker/broker_grpc_server_publish.go
View File

@ -2,7 +2,6 @@ package broker
import (
"io"
"time"
"github.com/golang/protobuf/proto"
@ -77,16 +76,9 @@ func (broker *MessageBroker) Publish(stream messaging_pb.SeaweedMessaging_Publis
continue
}
m := &messaging_pb.Message{
Timestamp: time.Now().UnixNano(),
Key: in.Data.Key,
Value: in.Data.Value,
Headers: in.Data.Headers,
}
// fmt.Printf("received: %d : %s\n", len(m.Value), string(m.Value))
// fmt.Printf("received: %d : %s\n", len(in.Data.Value), string(in.Data.Value))
data, err := proto.Marshal(m)
data, err := proto.Marshal(in.Data)
if err != nil {
glog.Errorf("marshall error: %v\n", err)
continue

69
weed/messaging/broker/broker_grpc_server_subscribe.go
View File

@ -1,6 +1,7 @@
package broker
import (
"fmt"
"io"
"time"
@ -9,7 +10,6 @@ import (
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/pb/messaging_pb"
"github.com/chrislusf/seaweedfs/weed/util"
)
func (broker *MessageBroker) Subscribe(stream messaging_pb.SeaweedMessaging_SubscribeServer) error {
@ -23,12 +23,22 @@ func (broker *MessageBroker) Subscribe(stream messaging_pb.SeaweedMessaging_Subs
return err
}
var messageCount int64
subscriberId := in.Init.SubscriberId
println("+ subscriber:", subscriberId)
defer println("- subscriber:", subscriberId)
fmt.Printf("+ subscriber %s\n", subscriberId)
defer func() {
fmt.Printf("- subscriber %s: %d messages\n", subscriberId, messageCount)
}()
// TODO look it up
topicConfig := &messaging_pb.TopicConfiguration{
IsTransient: true,
}
if err = stream.Send(&messaging_pb.BrokerMessage{
Redirect: nil,
}); err != nil {
return err
}
// get lock
@ -52,7 +62,7 @@ func (broker *MessageBroker) Subscribe(stream messaging_pb.SeaweedMessaging_Subs
// an error returned will end the subscription
eachMessageFn := func(m *messaging_pb.Message) error {
err := stream.Send(&messaging_pb.BrokerMessage{
Data: m,
Data: m,
})
if err != nil {
glog.V(0).Infof("=> subscriber %v: %+v", subscriberId, err)
@ -60,42 +70,25 @@ func (broker *MessageBroker) Subscribe(stream messaging_pb.SeaweedMessaging_Subs
return err
}
// loop through all messages
for {
_, buf := lock.logBuffer.ReadFromBuffer(lastReadTime)
for pos := 0; pos+4 < len(buf); {
size := util.BytesToUint32(buf[pos : pos+4])
entryData := buf[pos+4 : pos+4+int(size)]
logEntry := &filer_pb.LogEntry{}
if err = proto.Unmarshal(entryData, logEntry); err != nil {
glog.Errorf("unexpected unmarshal messaging_pb.Message: %v", err)
pos += 4 + int(size)
continue
}
m := &messaging_pb.Message{}
if err = proto.Unmarshal(logEntry.Data, m); err != nil {
glog.Errorf("unexpected unmarshal messaging_pb.Message: %v", err)
pos += 4 + int(size)
continue
}
// fmt.Printf("sending : %d : %s\n", len(m.Value), string(m.Value))
if err = eachMessageFn(m); err != nil {
return err
}
lastReadTime = time.Unix(0, m.Timestamp)
pos += 4 + int(size)
}
messageCount, err = lock.logBuffer.LoopProcessLogData(lastReadTime, func() bool {
lock.Mutex.Lock()
lock.cond.Wait()
lock.Mutex.Unlock()
}
return true
}, func(logEntry *filer_pb.LogEntry) error {
m := &messaging_pb.Message{}
if err = proto.Unmarshal(logEntry.Data, m); err != nil {
glog.Errorf("unexpected unmarshal messaging_pb.Message: %v", err)
return err
}
// fmt.Printf("sending : %d bytes\n", len(m.Value))
if err = eachMessageFn(m); err != nil {
glog.Errorf("sending %d bytes to %s: %s", len(m.Value), subscriberId, err)
return err
}
return nil
})
return err
}

4
weed/messaging/broker/topic_lock.go
View File

@ -41,6 +41,10 @@ func (locks *TopicLocks) buildLogBuffer(tl *TopicLock, tp TopicPartition, topicC
flushFn := func(startTime, stopTime time.Time, buf []byte) {
if topicConfig.IsTransient {
return
}
targetFile := fmt.Sprintf(
"%s/%s/%s/%04d-%02d-%02d/%02d-%02d.part%02d",
filer2.TopicsDir, tp.Namespace, tp.Topic,

2
weed/messaging/client/publisher.go
View File

@ -61,7 +61,7 @@ func (mc *MessagingClient) NewPublisher(namespace, topic string) (*Publisher, er
}, nil
}
func (p *Publisher) Publish(m *messaging_pb.RawData) error {
func (p *Publisher) Publish(m *messaging_pb.Message) error {
return p.publishClient.Send(&messaging_pb.PublishRequest{
Data: m,

10
weed/pb/messaging.proto
View File

@ -46,14 +46,8 @@ message SubscriberMessage {
AckMessage ack = 2;
}
message RawData {
bytes key = 1; // Message key
bytes value = 2; // Message payload
map<string, bytes> headers = 3; // Message headers
}
message Message {
int64 timestamp = 1 [jstype = JS_STRING]; // When the message was received by the broker
int64 event_time_ns = 1 [jstype = JS_STRING];
bytes key = 2; // Message key
bytes value = 3; // Message payload
map<string, bytes> headers = 4; // Message headers
@ -74,7 +68,7 @@ message PublishRequest {
int32 partition = 3;
}
InitMessage init = 1;
RawData data = 2;
Message data = 2;
}
message PublishResponse {

184
weed/pb/messaging_pb/messaging.pb.go
View File

@ -10,7 +10,6 @@ It is generated from these files:
It has these top-level messages:
SubscriberMessage
RawData
Message
BrokerMessage
PublishRequest
@ -167,53 +166,21 @@ func (m *SubscriberMessage_AckMessage) GetMessageId() int64 {
return 0
}
type RawData struct {
Key []byte `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
Value []byte `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
Headers map[string][]byte `protobuf:"bytes,3,rep,name=headers" json:"headers,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value,proto3"`
}
func (m *RawData) Reset() { *m = RawData{} }
func (m *RawData) String() string { return proto.CompactTextString(m) }
func (*RawData) ProtoMessage() {}
func (*RawData) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
func (m *RawData) GetKey() []byte {
if m != nil {
return m.Key
}
return nil
}
func (m *RawData) GetValue() []byte {
if m != nil {
return m.Value
}
return nil
}
func (m *RawData) GetHeaders() map[string][]byte {
if m != nil {
return m.Headers
}
return nil
}
type Message struct {
Timestamp int64 `protobuf:"varint,1,opt,name=timestamp" json:"timestamp,omitempty"`
Key []byte `protobuf:"bytes,2,opt,name=key,proto3" json:"key,omitempty"`
Value []byte `protobuf:"bytes,3,opt,name=value,proto3" json:"value,omitempty"`
Headers map[string][]byte `protobuf:"bytes,4,rep,name=headers" json:"headers,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value,proto3"`
EventTimeNs int64 `protobuf:"varint,1,opt,name=event_time_ns,json=eventTimeNs" json:"event_time_ns,omitempty"`
Key []byte `protobuf:"bytes,2,opt,name=key,proto3" json:"key,omitempty"`
Value []byte `protobuf:"bytes,3,opt,name=value,proto3" json:"value,omitempty"`
Headers map[string][]byte `protobuf:"bytes,4,rep,name=headers" json:"headers,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value,proto3"`
}
func (m *Message) Reset() { *m = Message{} }
func (m *Message) String() string { return proto.CompactTextString(m) }
func (*Message) ProtoMessage() {}
func (*Message) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
func (*Message) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
func (m *Message) GetTimestamp() int64 {
func (m *Message) GetEventTimeNs() int64 {
if m != nil {
return m.Timestamp
return m.EventTimeNs
}
return 0
}
@ -247,7 +214,7 @@ type BrokerMessage struct {
func (m *BrokerMessage) Reset() { *m = BrokerMessage{} }
func (m *BrokerMessage) String() string { return proto.CompactTextString(m) }
func (*BrokerMessage) ProtoMessage() {}
func (*BrokerMessage) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
func (*BrokerMessage) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
func (m *BrokerMessage) GetData() *Message {
if m != nil {
@ -271,7 +238,7 @@ func (m *BrokerMessage_RedirectMessage) Reset() { *m = BrokerMessage_Red
func (m *BrokerMessage_RedirectMessage) String() string { return proto.CompactTextString(m) }
func (*BrokerMessage_RedirectMessage) ProtoMessage() {}
func (*BrokerMessage_RedirectMessage) Descriptor() ([]byte, []int) {
return fileDescriptor0, []int{3, 0}
return fileDescriptor0, []int{2, 0}
}
func (m *BrokerMessage_RedirectMessage) GetNewBroker() string {
@ -283,13 +250,13 @@ func (m *BrokerMessage_RedirectMessage) GetNewBroker() string {
type PublishRequest struct {
Init *PublishRequest_InitMessage `protobuf:"bytes,1,opt,name=init" json:"init,omitempty"`
Data *RawData `protobuf:"bytes,2,opt,name=data" json:"data,omitempty"`
Data *Message `protobuf:"bytes,2,opt,name=data" json:"data,omitempty"`
}
func (m *PublishRequest) Reset() { *m = PublishRequest{} }
func (m *PublishRequest) String() string { return proto.CompactTextString(m) }
func (*PublishRequest) ProtoMessage() {}
func (*PublishRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4} }
func (*PublishRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
func (m *PublishRequest) GetInit() *PublishRequest_InitMessage {
if m != nil {
@ -298,7 +265,7 @@ func (m *PublishRequest) GetInit() *PublishRequest_InitMessage {
return nil
}
func (m *PublishRequest) GetData() *RawData {
func (m *PublishRequest) GetData() *Message {
if m != nil {
return m.Data
}
@ -314,7 +281,7 @@ type PublishRequest_InitMessage struct {
func (m *PublishRequest_InitMessage) Reset() { *m = PublishRequest_InitMessage{} }
func (m *PublishRequest_InitMessage) String() string { return proto.CompactTextString(m) }
func (*PublishRequest_InitMessage) ProtoMessage() {}
func (*PublishRequest_InitMessage) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4, 0} }
func (*PublishRequest_InitMessage) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3, 0} }
func (m *PublishRequest_InitMessage) GetNamespace() string {
if m != nil {
@ -345,7 +312,7 @@ type PublishResponse struct {
func (m *PublishResponse) Reset() { *m = PublishResponse{} }
func (m *PublishResponse) String() string { return proto.CompactTextString(m) }
func (*PublishResponse) ProtoMessage() {}
func (*PublishResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{5} }
func (*PublishResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4} }
func (m *PublishResponse) GetConfig() *PublishResponse_ConfigMessage {
if m != nil {
@ -369,7 +336,7 @@ func (m *PublishResponse_ConfigMessage) Reset() { *m = PublishResponse_C
func (m *PublishResponse_ConfigMessage) String() string { return proto.CompactTextString(m) }
func (*PublishResponse_ConfigMessage) ProtoMessage() {}
func (*PublishResponse_ConfigMessage) Descriptor() ([]byte, []int) {
return fileDescriptor0, []int{5, 0}
return fileDescriptor0, []int{4, 0}
}
func (m *PublishResponse_ConfigMessage) GetPartitionCount() int32 {
@ -387,7 +354,7 @@ func (m *PublishResponse_RedirectMessage) Reset() { *m = PublishResponse
func (m *PublishResponse_RedirectMessage) String() string { return proto.CompactTextString(m) }
func (*PublishResponse_RedirectMessage) ProtoMessage() {}
func (*PublishResponse_RedirectMessage) Descriptor() ([]byte, []int) {
return fileDescriptor0, []int{5, 1}
return fileDescriptor0, []int{4, 1}
}
func (m *PublishResponse_RedirectMessage) GetNewBroker() string {
@ -406,7 +373,7 @@ type ConfigureTopicRequest struct {
func (m *ConfigureTopicRequest) Reset() { *m = ConfigureTopicRequest{} }
func (m *ConfigureTopicRequest) String() string { return proto.CompactTextString(m) }
func (*ConfigureTopicRequest) ProtoMessage() {}
func (*ConfigureTopicRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{6} }
func (*ConfigureTopicRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{5} }
func (m *ConfigureTopicRequest) GetNamespace() string {
if m != nil {
@ -435,7 +402,7 @@ type ConfigureTopicResponse struct {
func (m *ConfigureTopicResponse) Reset() { *m = ConfigureTopicResponse{} }
func (m *ConfigureTopicResponse) String() string { return proto.CompactTextString(m) }
func (*ConfigureTopicResponse) ProtoMessage() {}
func (*ConfigureTopicResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{7} }
func (*ConfigureTopicResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{6} }
type GetTopicConfigurationRequest struct {
Namespace string `protobuf:"bytes,1,opt,name=namespace" json:"namespace,omitempty"`
@ -445,7 +412,7 @@ type GetTopicConfigurationRequest struct {
func (m *GetTopicConfigurationRequest) Reset() { *m = GetTopicConfigurationRequest{} }
func (m *GetTopicConfigurationRequest) String() string { return proto.CompactTextString(m) }
func (*GetTopicConfigurationRequest) ProtoMessage() {}
func (*GetTopicConfigurationRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{8} }
func (*GetTopicConfigurationRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{7} }
func (m *GetTopicConfigurationRequest) GetNamespace() string {
if m != nil {
@ -468,7 +435,7 @@ type GetTopicConfigurationResponse struct {
func (m *GetTopicConfigurationResponse) Reset() { *m = GetTopicConfigurationResponse{} }
func (m *GetTopicConfigurationResponse) String() string { return proto.CompactTextString(m) }
func (*GetTopicConfigurationResponse) ProtoMessage() {}
func (*GetTopicConfigurationResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{9} }
func (*GetTopicConfigurationResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{8} }
func (m *GetTopicConfigurationResponse) GetConfiguration() *TopicConfiguration {
if m != nil {
@ -487,7 +454,7 @@ type TopicConfiguration struct {
func (m *TopicConfiguration) Reset() { *m = TopicConfiguration{} }
func (m *TopicConfiguration) String() string { return proto.CompactTextString(m) }
func (*TopicConfiguration) ProtoMessage() {}
func (*TopicConfiguration) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{10} }
func (*TopicConfiguration) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{9} }
func (m *TopicConfiguration) GetPartitionCount() int32 {
if m != nil {
@ -521,7 +488,6 @@ func init() {
proto.RegisterType((*SubscriberMessage)(nil), "messaging_pb.SubscriberMessage")
proto.RegisterType((*SubscriberMessage_InitMessage)(nil), "messaging_pb.SubscriberMessage.InitMessage")
proto.RegisterType((*SubscriberMessage_AckMessage)(nil), "messaging_pb.SubscriberMessage.AckMessage")
proto.RegisterType((*RawData)(nil), "messaging_pb.RawData")
proto.RegisterType((*Message)(nil), "messaging_pb.Message")
proto.RegisterType((*BrokerMessage)(nil), "messaging_pb.BrokerMessage")
proto.RegisterType((*BrokerMessage_RedirectMessage)(nil), "messaging_pb.BrokerMessage.RedirectMessage")
@ -777,59 +743,57 @@ var _SeaweedMessaging_serviceDesc = grpc.ServiceDesc{
func init() { proto.RegisterFile("messaging.proto", fileDescriptor0) }
var fileDescriptor0 = []byte{
// 849 bytes of a gzipped FileDescriptorProto
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0x00,
// 832 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xb4, 0x56, 0x5d, 0x8f, 0xea, 0x44,
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}

49
weed/util/log_buffer/log_buffer.go
View File

@ -1,6 +1,7 @@
package log_buffer
import (
"bytes"
"sync"
"time"
@ -17,7 +18,7 @@ const PreviousBufferCount = 3
type dataToFlush struct {
startTime time.Time
stopTime time.Time
data []byte
data *bytes.Buffer
}
type LogBuffer struct {
@ -108,7 +109,8 @@ func (m *LogBuffer) Shutdown() {
func (m *LogBuffer) loopFlush() {
for d := range m.flushChan {
if d != nil {
m.flushFn(d.startTime, d.stopTime, d.data)
m.flushFn(d.startTime, d.stopTime, d.data.Bytes())
d.releaseMemory()
}
}
}
@ -140,21 +142,26 @@ func (m *LogBuffer) copyToFlush() *dataToFlush {
return nil
}
func (m *LogBuffer) ReadFromBuffer(lastReadTime time.Time) (ts time.Time, bufferCopy []byte) {
func (d *dataToFlush) releaseMemory() {
d.data.Reset()
bufferPool.Put(d.data)
}
func (m *LogBuffer) ReadFromBuffer(lastReadTime time.Time) (bufferCopy *bytes.Buffer) {
m.RLock()
defer m.RUnlock()
// fmt.Printf("read from buffer: %v\n", lastReadTime)
// fmt.Printf("read from buffer: %v last stop time: %v\n", lastReadTime.UnixNano(), m.stopTime.UnixNano())
if lastReadTime.Equal(m.stopTime) {
return lastReadTime, nil
return nil
}
if lastReadTime.After(m.stopTime) {
// glog.Fatalf("unexpected last read time %v, older than latest %v", lastReadTime, m.stopTime)
return lastReadTime, nil
return nil
}
if lastReadTime.Before(m.startTime) {
return m.stopTime, copiedBytes(m.buf[:m.pos])
return copiedBytes(m.buf[:m.pos])
}
lastTs := lastReadTime.UnixNano()
@ -177,7 +184,7 @@ func (m *LogBuffer) ReadFromBuffer(lastReadTime time.Time) (ts time.Time, buffer
for l <= h {
mid := (l + h) / 2
pos := m.idx[mid]
_, t := readTs(m.buf, m.idx[mid])
_, t := readTs(m.buf, pos)
if t <= lastTs {
l = mid + 1
} else if lastTs < t {
@ -186,22 +193,32 @@ func (m *LogBuffer) ReadFromBuffer(lastReadTime time.Time) (ts time.Time, buffer
_, prevT = readTs(m.buf, m.idx[mid-1])
}
if prevT <= lastTs {
// println("found mid = ", mid)
return time.Unix(0, t), copiedBytes(m.buf[pos:m.pos])
// fmt.Printf("found l=%d, m-1=%d(ts=%d), m=%d(ts=%d), h=%d [%d, %d) \n", l, mid-1, prevT, mid, t, h, pos, m.pos)
return copiedBytes(m.buf[pos:m.pos])
}
h = mid - 1
h = mid
}
// fmt.Printf("l=%d, h=%d\n", l, h)
}
// FIXME: this could be that the buffer has been flushed already
// println("not found")
return lastReadTime, nil
return nil
}
func copiedBytes(buf []byte) (copied []byte) {
copied = make([]byte, len(buf))
copy(copied, buf)
func (m *LogBuffer) ReleaseMeory(b *bytes.Buffer) {
b.Reset()
bufferPool.Put(b)
}
var bufferPool = sync.Pool{
New: func() interface{} {
return new(bytes.Buffer)
},
}
func copiedBytes(buf []byte) (copied *bytes.Buffer) {
copied = bufferPool.Get().(*bytes.Buffer)
copied.Write(buf)
return
}

41
weed/util/log_buffer/log_buffer_test.go
View File

@ -0,0 +1,41 @@
package log_buffer
import (
"math/rand"
"testing"
"time"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
)
func TestNewLogBuffer(t *testing.T) {
lb := NewLogBuffer(time.Second, func(startTime, stopTime time.Time, buf []byte) {
}, func() {
})
startTime := time.Now()
messageSize := 1024
messageCount := 994
var buf = make([]byte, messageSize)
for i := 0; i < messageCount; i++ {
rand.Read(buf)
lb.AddToBuffer(nil, buf)
}
receivedmessageCount := 0
lb.LoopProcessLogData(startTime, func() bool {
// stop if no more messages
return false
}, func(logEntry *filer_pb.LogEntry) error {
receivedmessageCount++
return nil
})
if receivedmessageCount != messageCount {
t.Errorf("sent %d received %d", messageCount, receivedmessageCount)
}
}

74
weed/util/log_buffer/log_read.go
View File

@ -0,0 +1,74 @@
package log_buffer
import (
"bytes"
"time"
"github.com/golang/protobuf/proto"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/util"
)
func (logBuffer *LogBuffer) LoopProcessLogData(
startTreadTime time.Time, waitForDataFn func() bool, eachLogDataFn func(logEntry *filer_pb.LogEntry) error) (processed int64, err error) {
// loop through all messages
var bytesBuf *bytes.Buffer
lastReadTime := startTreadTime
defer func() {
if bytesBuf != nil {
logBuffer.ReleaseMeory(bytesBuf)
}
}()
for {
if bytesBuf != nil {
logBuffer.ReleaseMeory(bytesBuf)
}
bytesBuf = logBuffer.ReadFromBuffer(lastReadTime)
if bytesBuf == nil {
if waitForDataFn() {
continue
} else {
return
}
}
buf := bytesBuf.Bytes()
batchSize := 0
var startReadTime time.Time
for pos := 0; pos+4 < len(buf); {
size := util.BytesToUint32(buf[pos : pos+4])
entryData := buf[pos+4 : pos+4+int(size)]
// fmt.Printf("read buffer read %d [%d,%d) from [0,%d)\n", batchSize, pos, pos+int(size)+4, len(buf))
logEntry := &filer_pb.LogEntry{}
if err = proto.Unmarshal(entryData, logEntry); err != nil {
glog.Errorf("unexpected unmarshal messaging_pb.Message: %v", err)
pos += 4 + int(size)
continue
}
lastReadTime = time.Unix(0, logEntry.TsNs)
if startReadTime.IsZero() {
startReadTime = lastReadTime
}
if err = eachLogDataFn(logEntry); err != nil {
return
}
pos += 4 + int(size)
batchSize++
processed++
}
// fmt.Printf("sent message ts[%d,%d] size %d\n", startReadTime.UnixNano(), lastReadTime.UnixNano(), batchSize)
}
}
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