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Squashed commit of the following:

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commit 32f4b1a13057d56b6de487cdb80ff7c205af01a6
Author: chrislu <chris.lu@gmail.com>
Date:   Sun Aug 20 22:52:19 2023 -0700

    fix compilation

commit e77ad33b7ca0423138fbae26a4433b60923a9588
Author: chrislu <chris.lu@gmail.com>
Date:   Sun Aug 20 22:46:44 2023 -0700

    pub

commit f431f30cc7ca277ca299e3cd118c05537fb9f5c3
Author: chrislu <chris.lu@gmail.com>
Date:   Sun Aug 20 13:27:39 2023 -0700

    fix generic type

commit 4e9dcb18293fd1e3e306e2dceb995dfd67a35e1d
Merge: 30f942580 16e3f2d52
Author: chrislu <chris.lu@gmail.com>
Date:   Sun Aug 20 12:47:14 2023 -0700

    Merge branch 'master' into pubsub

commit 30f942580ad1bb32ae94aade2e3a21ec3ab63e21
Author: chrislu <chris.lu@gmail.com>
Date:   Sun Aug 20 11:10:58 2023 -0700

    wip

commit f8b00980bc2f3879bb43decffd9a08d842f196f2
Author: chrislu <chris.lu@gmail.com>
Date:   Tue Jul 25 09:14:35 2023 -0700

    add design document

commit 08d2bebe42a26ebc39f1542f54d99e73620727dd
Author: chrislu <chris.lu@gmail.com>
Date:   Tue Jul 25 09:14:06 2023 -0700

    minor

commit bcfa7982b262a40fcdce6fc6613fad2ce07c13da
Author: chrislu <chris.lu@gmail.com>
Date:   Tue Jul 25 09:13:49 2023 -0700

    rename
This commit is contained in:
chrislu 2023-08-20 22:53:05 -07:00
parent 3650e5adda
commit 01d70c21f3
16 changed files with 1919 additions and 220 deletions
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2
go.mod
View file

@ -249,6 +249,8 @@ require (
github.com/ncw/swift/v2 v2.0.1 // indirect
github.com/opentracing/opentracing-go v1.2.0 // indirect
github.com/oracle/oci-go-sdk/v65 v65.34.0 // indirect
github.com/orcaman/concurrent-map v1.0.0 // indirect
github.com/orcaman/concurrent-map/v2 v2.0.1 // indirect
github.com/patrickmn/go-cache v2.1.0+incompatible // indirect
github.com/pelletier/go-toml/v2 v2.0.8 // indirect
github.com/pengsrc/go-shared v0.2.1-0.20190131101655-1999055a4a14 // indirect

6
go.sum
View file

@ -638,6 +638,12 @@ github.com/opentracing/opentracing-go v1.2.0 h1:uEJPy/1a5RIPAJ0Ov+OIO8OxWu77jEv+
github.com/opentracing/opentracing-go v1.2.0/go.mod h1:GxEUsuufX4nBwe+T+Wl9TAgYrxe9dPLANfrWvHYVTgc=
github.com/oracle/oci-go-sdk/v65 v65.34.0 h1:uG1KucBxAbn8cYRgQHxtQKogtl85nOX8LhimZCPfMqw=
github.com/oracle/oci-go-sdk/v65 v65.34.0/go.mod h1:MXMLMzHnnd9wlpgadPkdlkZ9YrwQmCOmbX5kjVEJodw=
github.com/orcaman/concurrent-map v1.0.0 h1:I/2A2XPCb4IuQWcQhBhSwGfiuybl/J0ev9HDbW65HOY=
github.com/orcaman/concurrent-map v1.0.0/go.mod h1:Lu3tH6HLW3feq74c2GC+jIMS/K2CFcDWnWD9XkenwhI=
github.com/orcaman/concurrent-map/v2 v2.0.1 h1:jOJ5Pg2w1oeB6PeDurIYf6k9PQ+aTITr/6lP/L/zp6c=
github.com/orcaman/concurrent-map/v2 v2.0.1/go.mod h1:9Eq3TG2oBe5FirmYWQfYO5iH1q0Jv47PLaNK++uCdOM=
github.com/ovh/go-ovh v1.4.1/go.mod h1:6bL6pPyUT7tBfI0pqOegJgRjgjuO+mOo+MyXd1EEC0M=
github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
github.com/pascaldekloe/goe v0.1.0 h1:cBOtyMzM9HTpWjXfbbunk26uA6nG3a8n06Wieeh0MwY=
github.com/pascaldekloe/goe v0.1.0/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
github.com/patrickmn/go-cache v2.1.0+incompatible h1:HRMgzkcYKYpi3C8ajMPV8OFXaaRUnok+kx1WdO15EQc=

107
weed/mq/broker/brokder_grpc_admin.go
View file

@ -4,7 +4,7 @@ import (
"context"
"github.com/seaweedfs/seaweedfs/weed/cluster"
"github.com/seaweedfs/seaweedfs/weed/glog"
"github.com/seaweedfs/seaweedfs/weed/mq"
"github.com/seaweedfs/seaweedfs/weed/mq/topic"
"github.com/seaweedfs/seaweedfs/weed/pb"
"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
@ -12,6 +12,10 @@ import (
"sync"
)
const (
MaxPartitionCount = 1024
)
func (broker *MessageQueueBroker) FindBrokerLeader(c context.Context, request *mq_pb.FindBrokerLeaderRequest) (*mq_pb.FindBrokerLeaderResponse, error) {
ret := &mq_pb.FindBrokerLeaderResponse{}
err := broker.withMasterClient(false, broker.MasterClient.GetMaster(), func(client master_pb.SeaweedClient) error {
@ -31,21 +35,9 @@ func (broker *MessageQueueBroker) FindBrokerLeader(c context.Context, request *m
return ret, err
}
func (broker *MessageQueueBroker) CheckSegmentStatus(c context.Context, request *mq_pb.CheckSegmentStatusRequest) (*mq_pb.CheckSegmentStatusResponse, error) {
ret := &mq_pb.CheckSegmentStatusResponse{}
// TODO add in memory active segment
return ret, nil
}
func (broker *MessageQueueBroker) CheckBrokerLoad(c context.Context, request *mq_pb.CheckBrokerLoadRequest) (*mq_pb.CheckBrokerLoadResponse, error) {
ret := &mq_pb.CheckBrokerLoadResponse{}
// TODO read broker's load
return ret, nil
}
func (broker *MessageQueueBroker) AssignSegmentBrokers(c context.Context, request *mq_pb.AssignSegmentBrokersRequest) (*mq_pb.AssignSegmentBrokersResponse, error) {
ret := &mq_pb.AssignSegmentBrokersResponse{}
segment := mq.FromPbSegment(request.Segment)
segment := topic.FromPbSegment(request.Segment)
// check existing segment locations on filer
existingBrokers, err := broker.checkSegmentOnFiler(segment)
@ -84,7 +76,92 @@ func (broker *MessageQueueBroker) AssignSegmentBrokers(c context.Context, reques
return ret, nil
}
func (broker *MessageQueueBroker) checkSegmentsOnBrokers(segment *mq.Segment, brokers []pb.ServerAddress) (active bool, err error) {
func (broker *MessageQueueBroker) CheckSegmentStatus(c context.Context, request *mq_pb.CheckSegmentStatusRequest) (*mq_pb.CheckSegmentStatusResponse, error) {
ret := &mq_pb.CheckSegmentStatusResponse{}
// TODO add in memory active segment
return ret, nil
}
func (broker *MessageQueueBroker) CheckBrokerLoad(c context.Context, request *mq_pb.CheckBrokerLoadRequest) (*mq_pb.CheckBrokerLoadResponse, error) {
ret := &mq_pb.CheckBrokerLoadResponse{}
// TODO read broker's load
return ret, nil
}
// FindTopicBrokers returns the brokers that are serving the topic
//
// 1. lock the topic
//
// 2. find the topic partitions on the filer
// 2.1 if the topic is not found, return error
// 2.2 if the request is_for_publish, create the topic
// 2.2.1 if the request is_for_subscribe, return error not found
// 2.2.2 if the request is_for_publish, create the topic
// 2.2 if the topic is found, return the brokers
//
// 3. unlock the topic
func (broker *MessageQueueBroker) FindTopicBrokers(c context.Context, request *mq_pb.FindTopicBrokersRequest) (*mq_pb.FindTopicBrokersResponse, error) {
ret := &mq_pb.FindTopicBrokersResponse{}
// lock the topic
// find the topic partitions on the filer
// if the topic is not found
// if the request is_for_publish
// create the topic
// if the request is_for_subscribe
// return error not found
return ret, nil
}
// CheckTopicPartitionsStatus check the topic partitions on the broker
func (broker *MessageQueueBroker) CheckTopicPartitionsStatus(c context.Context, request *mq_pb.CheckTopicPartitionsStatusRequest) (*mq_pb.CheckTopicPartitionsStatusResponse, error) {
ret := &mq_pb.CheckTopicPartitionsStatusResponse{}
return ret, nil
}
// createOrUpdateTopicPartitions creates the topic partitions on the broker
// 1. check
func (broker *MessageQueueBroker) createOrUpdateTopicPartitions(topic *topic.Topic, prevAssignment *mq_pb.TopicPartitionsAssignment) (err error) {
// create or update each partition
if prevAssignment == nil {
broker.createOrUpdateTopicPartition(topic, nil)
} else {
for _, partitionAssignment := range prevAssignment.BrokerPartitions {
broker.createOrUpdateTopicPartition(topic, partitionAssignment)
}
}
return nil
}
func (broker *MessageQueueBroker) createOrUpdateTopicPartition(topic *topic.Topic, oldAssignment *mq_pb.BrokerPartitionsAssignment) (newAssignment *mq_pb.BrokerPartitionsAssignment) {
shouldCreate := broker.confirmBrokerPartitionAssignment(topic, oldAssignment)
if !shouldCreate {
}
return
}
func (broker *MessageQueueBroker) confirmBrokerPartitionAssignment(topic *topic.Topic, oldAssignment *mq_pb.BrokerPartitionsAssignment) (shouldCreate bool) {
if oldAssignment == nil {
return true
}
for _, b := range oldAssignment.FollowerBrokers {
pb.WithBrokerClient(false, pb.ServerAddress(b), broker.grpcDialOption, func(client mq_pb.SeaweedMessagingClient) error {
_, err := client.CheckTopicPartitionsStatus(context.Background(), &mq_pb.CheckTopicPartitionsStatusRequest{
Namespace: string(topic.Namespace),
Topic: topic.Name,
BrokerPartitionsAssignment: oldAssignment,
ShouldCancelIfNotMatch: true,
})
if err != nil {
shouldCreate = true
}
return nil
})
}
return
}
func (broker *MessageQueueBroker) checkSegmentsOnBrokers(segment *topic.Segment, brokers []pb.ServerAddress) (active bool, err error) {
var wg sync.WaitGroup
for _, candidate := range brokers {

122
weed/mq/broker/brokder_grpc_pub.go
View file

@ -1,16 +1,136 @@
package broker
import (
"context"
"fmt"
"github.com/seaweedfs/seaweedfs/weed/glog"
"github.com/seaweedfs/seaweedfs/weed/mq/topic"
"github.com/seaweedfs/seaweedfs/weed/pb"
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
)
// For a new or re-configured topic, or one of the broker went offline,
// the pub clients ask one broker what are the brokers for all the topic partitions.
// The broker will lock the topic on write.
// 1. if the topic is not found, create the topic, and allocate the topic partitions to the brokers
// 2. if the topic is found, return the brokers for the topic partitions
// For a topic to read from, the sub clients ask one broker what are the brokers for all the topic partitions.
// The broker will lock the topic on read.
// 1. if the topic is not found, return error
// 2. if the topic is found, return the brokers for the topic partitions
//
// If the topic needs to be re-balanced, the admin client will lock the topic,
// 1. collect throughput information for all the brokers
// 2. adjust the topic partitions to the brokers
// 3. notify the brokers to add/remove partitions to host
// 3.1 When locking the topic, the partitions and brokers should be remembered in the lock.
// 4. the brokers will stop process incoming messages if not the right partition
// 4.1 the pub clients will need to re-partition the messages and publish to the right brokers for the partition3
// 4.2 the sub clients will need to change the brokers to read from
//
// The following is from each individual component's perspective:
// For a pub client
// For current topic/partition, ask one broker for the brokers for the topic partitions
// 1. connect to the brokers and keep sending, until the broker returns error, or the broker leader is moved.
// For a sub client
// For current topic/partition, ask one broker for the brokers for the topic partitions
// 1. connect to the brokers and keep reading, until the broker returns error, or the broker leader is moved.
// For a broker
// Upon a pub client lookup:
// 1. lock the topic
// 2. if already has topic partition assignment, check all brokers are healthy
// 3. if not, create topic partition assignment
// 2. return the brokers for the topic partitions
// 3. unlock the topic
// Upon a sub client lookup:
// 1. lock the topic
// 2. if already has topic partition assignment, check all brokers are healthy
// 3. if not, return error
// 2. return the brokers for the topic partitions
// 3. unlock the topic
// For an admin tool
// 0. collect stats from all the brokers, and find the topic worth moving
// 1. lock the topic
// 2. collect throughput information for all the brokers
// 3. adjust the topic partitions to the brokers
// 4. notify the brokers to add/remove partitions to host
// 5. the brokers will stop process incoming messages if not the right partition
// 6. unlock the topic
/*
The messages is buffered in memory, and saved to filer under
The messages are buffered in memory, and saved to filer under
/topics/<topic>/<date>/<hour>/<segment>/*.msg
/topics/<topic>/<date>/<hour>/segment
/topics/<topic>/info/segment_<id>.meta
*/
func (broker *MessageQueueBroker) Publish(stream mq_pb.SeaweedMessaging_PublishServer) error {
// 1. write to the volume server
// 2. find the topic metadata owning filer
// 3. write to the filer
var localTopicPartition *topic.LocalPartition
for {
req, err := stream.Recv()
if err != nil {
return err
}
// Process the received message
sequence := req.GetSequence()
response := &mq_pb.PublishResponse{
AckSequence: sequence,
}
if dataMessage := req.GetData(); dataMessage != nil {
if localTopicPartition == nil {
response.Error = "topic partition not initialized"
glog.Errorf("topic partition not found")
} else {
localTopicPartition.Publish(dataMessage)
}
} else if initMessage := req.GetInit(); initMessage != nil {
localTopicPartition = broker.localTopicManager.GetTopicPartition(
topic.NewTopic(topic.Namespace(initMessage.Segment.Namespace), initMessage.Segment.Topic),
topic.FromPbPartition(initMessage.Segment.Partition),
)
if localTopicPartition == nil {
response.Error = fmt.Sprintf("topic partition %v not found", initMessage.Segment)
glog.Errorf("topic partition %v not found", initMessage.Segment)
}
}
if err := stream.Send(response); err != nil {
glog.Errorf("Error sending setup response: %v", err)
}
}
return nil
}
// AssignTopicPartitions Runs on the assigned broker, to execute the topic partition assignment
func (broker *MessageQueueBroker) AssignTopicPartitions(c context.Context, request *mq_pb.AssignTopicPartitionsRequest) (*mq_pb.AssignTopicPartitionsResponse, error) {
ret := &mq_pb.AssignTopicPartitionsResponse{}
self := pb.ServerAddress(fmt.Sprintf("%s:%d", broker.option.Ip, broker.option.Port))
for _, partition := range request.TopicPartitionsAssignment.BrokerPartitions {
localPartiton := topic.FromPbBrokerPartitionsAssignment(self, partition)
broker.localTopicManager.AddTopicPartition(
topic.FromPbTopic(request.Topic),
localPartiton)
if request.IsLeader {
for _, follower := range localPartiton.FollowerBrokers {
err := pb.WithBrokerClient(false, follower, broker.grpcDialOption, func(client mq_pb.SeaweedMessagingClient) error {
_, err := client.AssignTopicPartitions(context.Background(), request)
return err
})
if err != nil {
return ret, err
}
}
}
}
return ret, nil
}

14
weed/mq/broker/broker_segment_serde.go
View file

@ -4,7 +4,7 @@ import (
"bytes"
"fmt"
"github.com/seaweedfs/seaweedfs/weed/filer"
"github.com/seaweedfs/seaweedfs/weed/mq"
"github.com/seaweedfs/seaweedfs/weed/mq/topic"
"github.com/seaweedfs/seaweedfs/weed/pb"
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
@ -12,8 +12,8 @@ import (
"time"
)
func (broker *MessageQueueBroker) checkSegmentOnFiler(segment *mq.Segment) (brokers []pb.ServerAddress, err error) {
info, found, err := broker.readSegmentOnFiler(segment)
func (broker *MessageQueueBroker) checkSegmentOnFiler(segment *topic.Segment) (brokers []pb.ServerAddress, err error) {
info, found, err := broker.readSegmentInfoOnFiler(segment)
if err != nil {
return
}
@ -27,12 +27,12 @@ func (broker *MessageQueueBroker) checkSegmentOnFiler(segment *mq.Segment) (brok
return
}
func (broker *MessageQueueBroker) saveSegmentBrokersOnFiler(segment *mq.Segment, brokers []pb.ServerAddress) (err error) {
func (broker *MessageQueueBroker) saveSegmentBrokersOnFiler(segment *topic.Segment, brokers []pb.ServerAddress) (err error) {
var nodes []string
for _, b := range brokers {
nodes = append(nodes, string(b))
}
broker.saveSegmentToFiler(segment, &mq_pb.SegmentInfo{
broker.saveSegmentInfoToFiler(segment, &mq_pb.SegmentInfo{
Segment: segment.ToPbSegment(),
StartTsNs: time.Now().UnixNano(),
Brokers: nodes,
@ -43,7 +43,7 @@ func (broker *MessageQueueBroker) saveSegmentBrokersOnFiler(segment *mq.Segment,
return
}
func (broker *MessageQueueBroker) readSegmentOnFiler(segment *mq.Segment) (info *mq_pb.SegmentInfo, found bool, err error) {
func (broker *MessageQueueBroker) readSegmentInfoOnFiler(segment *topic.Segment) (info *mq_pb.SegmentInfo, found bool, err error) {
dir, name := segment.DirAndName()
found, err = filer_pb.Exists(broker, dir, name, false)
@ -70,7 +70,7 @@ func (broker *MessageQueueBroker) readSegmentOnFiler(segment *mq.Segment) (info
return
}
func (broker *MessageQueueBroker) saveSegmentToFiler(segment *mq.Segment, info *mq_pb.SegmentInfo) (err error) {
func (broker *MessageQueueBroker) saveSegmentInfoToFiler(segment *topic.Segment, info *mq_pb.SegmentInfo) (err error) {
dir, name := segment.DirAndName()
var buf bytes.Buffer

3
weed/mq/broker/broker_server.go
View file

@ -1,6 +1,7 @@
package broker
import (
"github.com/seaweedfs/seaweedfs/weed/mq/topic"
"time"
"github.com/seaweedfs/seaweedfs/weed/cluster"
@ -32,6 +33,7 @@ type MessageQueueBroker struct {
MasterClient *wdclient.MasterClient
filers map[pb.ServerAddress]struct{}
currentFiler pb.ServerAddress
localTopicManager *topic.LocalTopicManager
}
func NewMessageBroker(option *MessageQueueBrokerOption, grpcDialOption grpc.DialOption) (mqBroker *MessageQueueBroker, err error) {
@ -41,6 +43,7 @@ func NewMessageBroker(option *MessageQueueBrokerOption, grpcDialOption grpc.Dial
grpcDialOption: grpcDialOption,
MasterClient: wdclient.NewMasterClient(grpcDialOption, option.FilerGroup, cluster.BrokerType, pb.NewServerAddress(option.Ip, option.Port, 0), option.DataCenter, option.Rack, option.Masters),
filers: make(map[pb.ServerAddress]struct{}),
localTopicManager: topic.NewLocalTopicManager(),
}
mqBroker.MasterClient.SetOnPeerUpdateFn(mqBroker.OnBrokerUpdate)

5
weed/mq/segment/message_serde_test.go
View file

@ -17,6 +17,7 @@ func TestMessageSerde(t *testing.T) {
bb := NewMessageBatchBuilder(b, 1, 2, 3, 4)
bb.AddMessage(5, 6, prop, []byte("the primary key"), []byte("body is here"))
bb.AddMessage(5, 7, prop, []byte("the primary 2"), []byte("body is 2"))
bb.BuildMessageBatch()
@ -33,9 +34,9 @@ func TestMessageSerde(t *testing.T) {
assert.Equal(t, int64(5), mb.SegmentSeqBase())
assert.Equal(t, int32(0), mb.SegmentSeqMaxDelta())
assert.Equal(t, int64(6), mb.TsMsBase())
assert.Equal(t, int32(0), mb.TsMsMaxDelta())
assert.Equal(t, int32(1), mb.TsMsMaxDelta())
assert.Equal(t, 1, mb.MessagesLength())
assert.Equal(t, 2, mb.MessagesLength())
m := &message_fbs.Message{}
mb.Messages(m, 0)

54
weed/mq/topic/local_manager.go Normal file
View file

@ -0,0 +1,54 @@
package topic
import (
cmap "github.com/orcaman/concurrent-map/v2"
)
// LocalTopicManager manages topics on local broker
type LocalTopicManager struct {
topics cmap.ConcurrentMap[string, *LocalTopic]
}
// NewLocalTopicManager creates a new LocalTopicManager
func NewLocalTopicManager() *LocalTopicManager {
return &LocalTopicManager{
topics: cmap.New[*LocalTopic](),
}
}
// AddTopic adds a topic to the local topic manager
func (manager *LocalTopicManager) AddTopicPartition(topic Topic, localPartition *LocalPartition) {
localTopic, ok := manager.topics.Get(topic.String())
if !ok {
localTopic = &LocalTopic{
Topic: topic,
Partitions: make([]*LocalPartition, 0),
}
}
if localTopic.findPartition(localPartition.Partition) != nil {
return
}
localTopic.Partitions = append(localTopic.Partitions, localPartition)
}
// GetTopic gets a topic from the local topic manager
func (manager *LocalTopicManager) GetTopicPartition(topic Topic, partition Partition) *LocalPartition {
localTopic, ok := manager.topics.Get(topic.String())
if !ok {
return nil
}
return localTopic.findPartition(partition)
}
// RemoveTopic removes a topic from the local topic manager
func (manager *LocalTopicManager) RemoveTopic(topic Topic) {
manager.topics.Remove(topic.String())
}
func (manager *LocalTopicManager) RemoveTopicPartition(topic Topic, partition Partition) (removed bool) {
localTopic, ok := manager.topics.Get(topic.String())
if !ok {
return false
}
return localTopic.removePartition(partition)
}

40
weed/mq/topic/local_partition.go Normal file
View file

@ -0,0 +1,40 @@
package topic
import (
"github.com/seaweedfs/seaweedfs/weed/pb"
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
"github.com/seaweedfs/seaweedfs/weed/util/log_buffer"
"time"
)
type LocalPartition struct {
Partition
isLeader bool
FollowerBrokers []pb.ServerAddress
logBuffer *log_buffer.LogBuffer
}
func (p LocalPartition) Publish(message *mq_pb.PublishRequest_DataMessage) {
p.logBuffer.AddToBuffer(message.Key, message.Value, time.Now().UnixNano())
}
func FromPbBrokerPartitionsAssignment(self pb.ServerAddress, assignment *mq_pb.BrokerPartitionsAssignment) *LocalPartition {
isLeaer := assignment.LeaderBroker == string(self)
localPartition := &LocalPartition{
Partition: Partition{
RangeStart: assignment.PartitionStart,
RangeStop: assignment.PartitionStop,
RingSize: PartitionCount,
},
isLeader: isLeaer,
}
if !isLeaer {
return localPartition
}
followers := make([]pb.ServerAddress, len(assignment.FollowerBrokers))
for i, follower := range assignment.FollowerBrokers {
followers[i] = pb.ServerAddress(follower)
}
localPartition.FollowerBrokers = followers
return localPartition
}

29
weed/mq/topic/local_topic.go Normal file
View file

@ -0,0 +1,29 @@
package topic
type LocalTopic struct {
Topic
Partitions []*LocalPartition
}
func (localTopic *LocalTopic) findPartition(partition Partition) *LocalPartition {
for _, localPartition := range localTopic.Partitions {
if localPartition.Partition.Equals(partition) {
return localPartition
}
}
return nil
}
func (localTopic *LocalTopic) removePartition(partition Partition) bool {
foundPartitionIndex := -1
for i, localPartition := range localTopic.Partitions {
if localPartition.Partition.Equals(partition) {
foundPartitionIndex = i
break
}
}
if foundPartitionIndex == -1 {
return false
}
localTopic.Partitions = append(localTopic.Partitions[:foundPartitionIndex], localTopic.Partitions[foundPartitionIndex+1:]...)
return true
}

32
weed/mq/topic/partition.go Normal file
View file

@ -0,0 +1,32 @@
package topic
import "github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
const PartitionCount = 4096
type Partition struct {
RangeStart int32
RangeStop int32 // exclusive
RingSize int32
}
func (partition Partition) Equals(other Partition) bool {
if partition.RangeStart != other.RangeStart {
return false
}
if partition.RangeStop != other.RangeStop {
return false
}
if partition.RingSize != other.RingSize {
return false
}
return true
}
func FromPbPartition(partition *mq_pb.Partition) Partition {
return Partition{
RangeStart: partition.RangeStart,
RangeStop: partition.RangeStop,
RingSize: partition.RingSize,
}
}

21
weed/mq/topic.go → weed/mq/topic/topic.go
View file

@ -1,4 +1,4 @@
package mq
package topic
import (
"fmt"
@ -14,10 +14,21 @@ type Topic struct {
Name string
}
type Partition struct {
RangeStart int32
RangeStop int32 // exclusive
RingSize int32
func NewTopic(namespace Namespace, name string) Topic {
return Topic{
Namespace: namespace,
Name: name,
}
}
func FromPbTopic(topic *mq_pb.Topic) Topic {
return Topic{
Namespace: Namespace(topic.Namespace),
Name: topic.Name,
}
}
func (tp Topic) String() string {
return fmt.Sprintf("%s.%s", tp.Namespace, tp.Name)
}
type Segment struct {

81
weed/mq/topic_allocation/allocation.go Normal file
View file

@ -0,0 +1,81 @@
package topic_allocation
import (
"github.com/seaweedfs/seaweedfs/weed/mq/topic"
"github.com/seaweedfs/seaweedfs/weed/pb"
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
"modernc.org/mathutil"
)
const (
DefaultBrokerCount = 4
)
// AllocateBrokersForTopicPartitions allocate brokers for a topic's all partitions
func AllocateBrokersForTopicPartitions(t topic.Topic, prevAssignment *mq_pb.TopicPartitionsAssignment, candidateBrokers []pb.ServerAddress) (assignment *mq_pb.TopicPartitionsAssignment, err error) {
// create a previous assignment if not exists
if prevAssignment == nil || len(prevAssignment.BrokerPartitions) == 0 {
prevAssignment = &mq_pb.TopicPartitionsAssignment{
PartitionCount: topic.PartitionCount,
}
partitionCountForEachBroker := topic.PartitionCount / DefaultBrokerCount
for i := 0; i < DefaultBrokerCount; i++ {
prevAssignment.BrokerPartitions = append(prevAssignment.BrokerPartitions, &mq_pb.BrokerPartitionsAssignment{
PartitionStart: int32(i * partitionCountForEachBroker),
PartitionStop: mathutil.MaxInt32(int32((i+1)*partitionCountForEachBroker), topic.PartitionCount),
})
}
}
// create a new assignment
assignment = &mq_pb.TopicPartitionsAssignment{
PartitionCount: prevAssignment.PartitionCount,
}
// allocate partitions for each partition range
for _, brokerPartition := range prevAssignment.BrokerPartitions {
// allocate partitions for each partition range
leader, followers, err := allocateBrokersForOneTopicPartition(t, brokerPartition, candidateBrokers)
if err != nil {
return nil, err
}
followerBrokers := make([]string, len(followers))
for i, follower := range followers {
followerBrokers[i] = string(follower)
}
assignment.BrokerPartitions = append(assignment.BrokerPartitions, &mq_pb.BrokerPartitionsAssignment{
PartitionStart: brokerPartition.PartitionStart,
PartitionStop: brokerPartition.PartitionStop,
LeaderBroker: string(leader),
FollowerBrokers: followerBrokers,
})
}
return
}
func allocateBrokersForOneTopicPartition(t topic.Topic, brokerPartition *mq_pb.BrokerPartitionsAssignment, candidateBrokers []pb.ServerAddress) (leader pb.ServerAddress, followers []pb.ServerAddress, err error) {
// allocate leader
leader, err = allocateLeaderForOneTopicPartition(t, brokerPartition, candidateBrokers)
if err != nil {
return
}
// allocate followers
followers, err = allocateFollowersForOneTopicPartition(t, brokerPartition, candidateBrokers)
if err != nil {
return
}
return
}
func allocateFollowersForOneTopicPartition(t topic.Topic, partition *mq_pb.BrokerPartitionsAssignment, brokers []pb.ServerAddress) (followers []pb.ServerAddress, err error) {
return
}
func allocateLeaderForOneTopicPartition(t topic.Topic, partition *mq_pb.BrokerPartitionsAssignment, brokers []pb.ServerAddress) (leader pb.ServerAddress, err error) {
return
}

72
weed/pb/mq.proto
View file

@ -20,6 +20,17 @@ service SeaweedMessaging {
rpc CheckBrokerLoad (CheckBrokerLoadRequest) returns (CheckBrokerLoadResponse) {
}
// control plane for topic partitions
rpc FindTopicBrokers (FindTopicBrokersRequest) returns (FindTopicBrokersResponse) {
}
// a pub client will call this to get the topic partitions assignment
rpc RequestTopicPartitions (RequestTopicPartitionsRequest) returns (RequestTopicPartitionsResponse) {
}
rpc AssignTopicPartitions (AssignTopicPartitionsRequest) returns (AssignTopicPartitionsResponse) {
}
rpc CheckTopicPartitionsStatus (CheckTopicPartitionsStatusRequest) returns (CheckTopicPartitionsStatusResponse) {
}
// data plane
rpc Publish (stream PublishRequest) returns (stream PublishResponse) {
}
@ -45,6 +56,10 @@ message FindBrokerLeaderResponse {
string broker = 1;
}
message Topic {
string namespace = 1;
string name = 2;
}
message Partition {
int32 ring_size = 1;
int32 range_start = 2;
@ -83,15 +98,68 @@ message CheckBrokerLoadResponse {
}
message FindTopicBrokersRequest {
Topic topic = 1;
bool is_for_publish = 2;
}
message FindTopicBrokersResponse {
Topic topic = 1;
TopicPartitionsAssignment topic_partitions_assignment = 2;
}
message BrokerPartitionsAssignment {
int32 partition_start = 1;
int32 partition_stop = 2;
string leader_broker = 3;
repeated string follower_brokers = 4;
}
message TopicPartitionsAssignment {
int32 partition_count = 1; // over-sharded partitions, usually 1024
repeated BrokerPartitionsAssignment broker_partitions = 2;
}
message RequestTopicPartitionsRequest {
Topic topic = 1;
int32 partition_count = 2;
}
message RequestTopicPartitionsResponse {
TopicPartitionsAssignment topic_partitions_assignment = 1;
}
message AssignTopicPartitionsRequest {
Topic topic = 1;
TopicPartitionsAssignment topic_partitions_assignment = 2;
bool is_leader = 3;
}
message AssignTopicPartitionsResponse {
}
message CheckTopicPartitionsStatusRequest {
string namespace = 1;
string topic = 2;
BrokerPartitionsAssignment broker_partitions_assignment = 3;
bool should_cancel_if_not_match = 4;
}
message CheckTopicPartitionsStatusResponse {
TopicPartitionsAssignment topic_partitions_assignment = 1;
}
//////////////////////////////////////////////////
message PublishRequest {
message InitMessage {
Segment segment = 1;
}
message DataMessage {
bytes key = 1;
bytes value = 2;
}
oneof message {
InitMessage init = 1;
bytes message = 2;
DataMessage data = 2;
}
int64 sequence = 3;
}
message PublishResponse {
int64 ack_sequence = 1;
bool is_closed = 2;
string error = 2;
bool is_closed = 3;
}

1375
weed/pb/mq_pb/mq.pb.go
View file

File diff suppressed because it is too large Load diff

148
weed/pb/mq_pb/mq_grpc.pb.go
View file

@ -27,6 +27,12 @@ type SeaweedMessagingClient interface {
AssignSegmentBrokers(ctx context.Context, in *AssignSegmentBrokersRequest, opts ...grpc.CallOption) (*AssignSegmentBrokersResponse, error)
CheckSegmentStatus(ctx context.Context, in *CheckSegmentStatusRequest, opts ...grpc.CallOption) (*CheckSegmentStatusResponse, error)
CheckBrokerLoad(ctx context.Context, in *CheckBrokerLoadRequest, opts ...grpc.CallOption) (*CheckBrokerLoadResponse, error)
// control plane for topic partitions
FindTopicBrokers(ctx context.Context, in *FindTopicBrokersRequest, opts ...grpc.CallOption) (*FindTopicBrokersResponse, error)
// a pub client will call this to get the topic partitions assignment
RequestTopicPartitions(ctx context.Context, in *RequestTopicPartitionsRequest, opts ...grpc.CallOption) (*RequestTopicPartitionsResponse, error)
AssignTopicPartitions(ctx context.Context, in *AssignTopicPartitionsRequest, opts ...grpc.CallOption) (*AssignTopicPartitionsResponse, error)
CheckTopicPartitionsStatus(ctx context.Context, in *CheckTopicPartitionsStatusRequest, opts ...grpc.CallOption) (*CheckTopicPartitionsStatusResponse, error)
// data plane
Publish(ctx context.Context, opts ...grpc.CallOption) (SeaweedMessaging_PublishClient, error)
}
@ -75,6 +81,42 @@ func (c *seaweedMessagingClient) CheckBrokerLoad(ctx context.Context, in *CheckB
return out, nil
}
func (c *seaweedMessagingClient) FindTopicBrokers(ctx context.Context, in *FindTopicBrokersRequest, opts ...grpc.CallOption) (*FindTopicBrokersResponse, error) {
out := new(FindTopicBrokersResponse)
err := c.cc.Invoke(ctx, "/messaging_pb.SeaweedMessaging/FindTopicBrokers", in, out, opts...)
if err != nil {
return nil, err
}
return out, nil
}
func (c *seaweedMessagingClient) RequestTopicPartitions(ctx context.Context, in *RequestTopicPartitionsRequest, opts ...grpc.CallOption) (*RequestTopicPartitionsResponse, error) {
out := new(RequestTopicPartitionsResponse)
err := c.cc.Invoke(ctx, "/messaging_pb.SeaweedMessaging/RequestTopicPartitions", in, out, opts...)
if err != nil {
return nil, err
}
return out, nil
}
func (c *seaweedMessagingClient) AssignTopicPartitions(ctx context.Context, in *AssignTopicPartitionsRequest, opts ...grpc.CallOption) (*AssignTopicPartitionsResponse, error) {
out := new(AssignTopicPartitionsResponse)
err := c.cc.Invoke(ctx, "/messaging_pb.SeaweedMessaging/AssignTopicPartitions", in, out, opts...)
if err != nil {
return nil, err
}
return out, nil
}
func (c *seaweedMessagingClient) CheckTopicPartitionsStatus(ctx context.Context, in *CheckTopicPartitionsStatusRequest, opts ...grpc.CallOption) (*CheckTopicPartitionsStatusResponse, error) {
out := new(CheckTopicPartitionsStatusResponse)
err := c.cc.Invoke(ctx, "/messaging_pb.SeaweedMessaging/CheckTopicPartitionsStatus", in, out, opts...)
if err != nil {
return nil, err
}
return out, nil
}
func (c *seaweedMessagingClient) Publish(ctx context.Context, opts ...grpc.CallOption) (SeaweedMessaging_PublishClient, error) {
stream, err := c.cc.NewStream(ctx, &SeaweedMessaging_ServiceDesc.Streams[0], "/messaging_pb.SeaweedMessaging/Publish", opts...)
if err != nil {
@ -115,6 +157,12 @@ type SeaweedMessagingServer interface {
AssignSegmentBrokers(context.Context, *AssignSegmentBrokersRequest) (*AssignSegmentBrokersResponse, error)
CheckSegmentStatus(context.Context, *CheckSegmentStatusRequest) (*CheckSegmentStatusResponse, error)
CheckBrokerLoad(context.Context, *CheckBrokerLoadRequest) (*CheckBrokerLoadResponse, error)
// control plane for topic partitions
FindTopicBrokers(context.Context, *FindTopicBrokersRequest) (*FindTopicBrokersResponse, error)
// a pub client will call this to get the topic partitions assignment
RequestTopicPartitions(context.Context, *RequestTopicPartitionsRequest) (*RequestTopicPartitionsResponse, error)
AssignTopicPartitions(context.Context, *AssignTopicPartitionsRequest) (*AssignTopicPartitionsResponse, error)
CheckTopicPartitionsStatus(context.Context, *CheckTopicPartitionsStatusRequest) (*CheckTopicPartitionsStatusResponse, error)
// data plane
Publish(SeaweedMessaging_PublishServer) error
mustEmbedUnimplementedSeaweedMessagingServer()
@ -136,6 +184,18 @@ func (UnimplementedSeaweedMessagingServer) CheckSegmentStatus(context.Context, *
func (UnimplementedSeaweedMessagingServer) CheckBrokerLoad(context.Context, *CheckBrokerLoadRequest) (*CheckBrokerLoadResponse, error) {
return nil, status.Errorf(codes.Unimplemented, "method CheckBrokerLoad not implemented")
}
func (UnimplementedSeaweedMessagingServer) FindTopicBrokers(context.Context, *FindTopicBrokersRequest) (*FindTopicBrokersResponse, error) {
return nil, status.Errorf(codes.Unimplemented, "method FindTopicBrokers not implemented")
}
func (UnimplementedSeaweedMessagingServer) RequestTopicPartitions(context.Context, *RequestTopicPartitionsRequest) (*RequestTopicPartitionsResponse, error) {
return nil, status.Errorf(codes.Unimplemented, "method RequestTopicPartitions not implemented")
}
func (UnimplementedSeaweedMessagingServer) AssignTopicPartitions(context.Context, *AssignTopicPartitionsRequest) (*AssignTopicPartitionsResponse, error) {
return nil, status.Errorf(codes.Unimplemented, "method AssignTopicPartitions not implemented")
}
func (UnimplementedSeaweedMessagingServer) CheckTopicPartitionsStatus(context.Context, *CheckTopicPartitionsStatusRequest) (*CheckTopicPartitionsStatusResponse, error) {
return nil, status.Errorf(codes.Unimplemented, "method CheckTopicPartitionsStatus not implemented")
}
func (UnimplementedSeaweedMessagingServer) Publish(SeaweedMessaging_PublishServer) error {
return status.Errorf(codes.Unimplemented, "method Publish not implemented")
}
@ -224,6 +284,78 @@ func _SeaweedMessaging_CheckBrokerLoad_Handler(srv interface{}, ctx context.Cont
return interceptor(ctx, in, info, handler)
}
func _SeaweedMessaging_FindTopicBrokers_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(FindTopicBrokersRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(SeaweedMessagingServer).FindTopicBrokers(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/messaging_pb.SeaweedMessaging/FindTopicBrokers",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(SeaweedMessagingServer).FindTopicBrokers(ctx, req.(*FindTopicBrokersRequest))
}
return interceptor(ctx, in, info, handler)
}
func _SeaweedMessaging_RequestTopicPartitions_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(RequestTopicPartitionsRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(SeaweedMessagingServer).RequestTopicPartitions(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/messaging_pb.SeaweedMessaging/RequestTopicPartitions",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(SeaweedMessagingServer).RequestTopicPartitions(ctx, req.(*RequestTopicPartitionsRequest))
}
return interceptor(ctx, in, info, handler)
}
func _SeaweedMessaging_AssignTopicPartitions_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(AssignTopicPartitionsRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(SeaweedMessagingServer).AssignTopicPartitions(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/messaging_pb.SeaweedMessaging/AssignTopicPartitions",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(SeaweedMessagingServer).AssignTopicPartitions(ctx, req.(*AssignTopicPartitionsRequest))
}
return interceptor(ctx, in, info, handler)
}
func _SeaweedMessaging_CheckTopicPartitionsStatus_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(CheckTopicPartitionsStatusRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(SeaweedMessagingServer).CheckTopicPartitionsStatus(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/messaging_pb.SeaweedMessaging/CheckTopicPartitionsStatus",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(SeaweedMessagingServer).CheckTopicPartitionsStatus(ctx, req.(*CheckTopicPartitionsStatusRequest))
}
return interceptor(ctx, in, info, handler)
}
func _SeaweedMessaging_Publish_Handler(srv interface{}, stream grpc.ServerStream) error {
return srv.(SeaweedMessagingServer).Publish(&seaweedMessagingPublishServer{stream})
}
@ -273,6 +405,22 @@ var SeaweedMessaging_ServiceDesc = grpc.ServiceDesc{
MethodName: "CheckBrokerLoad",
Handler: _SeaweedMessaging_CheckBrokerLoad_Handler,
},
{
MethodName: "FindTopicBrokers",
Handler: _SeaweedMessaging_FindTopicBrokers_Handler,
},
{
MethodName: "RequestTopicPartitions",
Handler: _SeaweedMessaging_RequestTopicPartitions_Handler,
},
{
MethodName: "AssignTopicPartitions",
Handler: _SeaweedMessaging_AssignTopicPartitions_Handler,
},
{
MethodName: "CheckTopicPartitionsStatus",
Handler: _SeaweedMessaging_CheckTopicPartitionsStatus_Handler,
},
},
Streams: []grpc.StreamDesc{
{