seaweedfs/weed/mq/topic/partition.go
Chris Lu 580940bf82
Merge accumulated changes related to message queue (#5098)
* balance partitions on brokers

* prepare topic partition first and then publish, move partition

* purge unused APIs

* clean up

* adjust logs

* add BalanceTopics() grpc API

* configure topic

* configure topic command

* refactor

* repair missing partitions

* sequence of operations to ensure ordering

* proto to close publishers and consumers

* rename file

* topic partition versioned by unixTimeNs

* create local topic partition

* close publishers

* randomize the client name

* wait until no publishers

* logs

* close stop publisher channel

* send last ack

* comments

* comment

* comments

* support list of brokers

* add cli options

* Update .gitignore

* logs

* return io.eof directly

* refactor

* optionally create topic

* refactoring

* detect consumer disconnection

* sub client wait for more messages

* subscribe by time stamp

* rename

* rename to sub_balancer

* rename

* adjust comments

* rename

* fix compilation

* rename

* rename

* SubscriberToSubCoordinator

* sticky rebalance

* go fmt

* add tests

* balance partitions on brokers

* prepare topic partition first and then publish, move partition

* purge unused APIs

* clean up

* adjust logs

* add BalanceTopics() grpc API

* configure topic

* configure topic command

* refactor

* repair missing partitions

* sequence of operations to ensure ordering

* proto to close publishers and consumers

* rename file

* topic partition versioned by unixTimeNs

* create local topic partition

* close publishers

* randomize the client name

* wait until no publishers

* logs

* close stop publisher channel

* send last ack

* comments

* comment

* comments

* support list of brokers

* add cli options

* Update .gitignore

* logs

* return io.eof directly

* refactor

* optionally create topic

* refactoring

* detect consumer disconnection

* sub client wait for more messages

* subscribe by time stamp

* rename

* rename to sub_balancer

* rename

* adjust comments

* rename

* fix compilation

* rename

* rename

* SubscriberToSubCoordinator

* sticky rebalance

* go fmt

* add tests

* tracking topic=>broker

* merge

* comment
2023-12-11 12:05:54 -08:00

65 lines
1.5 KiB
Go

package topic
import "github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
const PartitionCount = 4096
type Partition struct {
RangeStart int32
RangeStop int32 // exclusive
RingSize int32
UnixTimeNs int64 // in nanoseconds
}
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
}
if partition.UnixTimeNs != other.UnixTimeNs {
return false
}
return true
}
func FromPbPartition(partition *mq_pb.Partition) Partition {
return Partition{
RangeStart: partition.RangeStart,
RangeStop: partition.RangeStop,
RingSize: partition.RingSize,
UnixTimeNs: partition.UnixTimeNs,
}
}
func SplitPartitions(targetCount int32, ts int64) []*Partition {
partitions := make([]*Partition, 0, targetCount)
partitionSize := PartitionCount / targetCount
for i := int32(0); i < targetCount; i++ {
partitionStop := (i + 1) * partitionSize
if i == targetCount-1 {
partitionStop = PartitionCount
}
partitions = append(partitions, &Partition{
RangeStart: i * partitionSize,
RangeStop: partitionStop,
RingSize: PartitionCount,
UnixTimeNs: ts,
})
}
return partitions
}
func (partition Partition) ToPbPartition() *mq_pb.Partition {
return &mq_pb.Partition{
RangeStart: partition.RangeStart,
RangeStop: partition.RangeStop,
RingSize: partition.RingSize,
UnixTimeNs: partition.UnixTimeNs,
}
}