mirror of
https://github.com/chrislusf/seaweedfs
synced 2024-07-03 07:36:45 +02:00
580940bf82
* 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
54 lines
1.8 KiB
Go
54 lines
1.8 KiB
Go
package pub_balancer
|
|
|
|
import (
|
|
"errors"
|
|
"github.com/seaweedfs/seaweedfs/weed/glog"
|
|
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
|
|
)
|
|
|
|
var (
|
|
ErrNoBroker = errors.New("no broker")
|
|
)
|
|
|
|
func (balancer *Balancer) LookupOrAllocateTopicPartitions(topic *mq_pb.Topic, publish bool, partitionCount int32) (assignments []*mq_pb.BrokerPartitionAssignment, err error) {
|
|
if partitionCount == 0 {
|
|
partitionCount = 6
|
|
}
|
|
// find existing topic partition assignments
|
|
for brokerStatsItem := range balancer.Brokers.IterBuffered() {
|
|
broker, brokerStats := brokerStatsItem.Key, brokerStatsItem.Val
|
|
for topicPartitionStatsItem := range brokerStats.TopicPartitionStats.IterBuffered() {
|
|
topicPartitionStat := topicPartitionStatsItem.Val
|
|
if topicPartitionStat.TopicPartition.Namespace == topic.Namespace &&
|
|
topicPartitionStat.TopicPartition.Name == topic.Name {
|
|
assignment := &mq_pb.BrokerPartitionAssignment{
|
|
Partition: &mq_pb.Partition{
|
|
RingSize: MaxPartitionCount,
|
|
RangeStart: topicPartitionStat.RangeStart,
|
|
RangeStop: topicPartitionStat.RangeStop,
|
|
},
|
|
}
|
|
// TODO fix follower setting
|
|
assignment.LeaderBroker = broker
|
|
assignments = append(assignments, assignment)
|
|
}
|
|
}
|
|
}
|
|
if len(assignments) > 0 && len(assignments) == int(partitionCount) || !publish {
|
|
glog.V(0).Infof("existing topic partitions %d: %v", len(assignments), assignments)
|
|
return assignments, nil
|
|
}
|
|
|
|
// 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
|
|
// t := topic.FromPbTopic(request.Topic)
|
|
if balancer.Brokers.IsEmpty() {
|
|
return nil, ErrNoBroker
|
|
}
|
|
return allocateTopicPartitions(balancer.Brokers, partitionCount), nil
|
|
}
|