mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-12-19 21:47:50 +08:00
65 lines
2.6 KiB
Go
65 lines
2.6 KiB
Go
package broker
|
|
|
|
import (
|
|
"fmt"
|
|
"github.com/seaweedfs/seaweedfs/weed/glog"
|
|
"github.com/seaweedfs/seaweedfs/weed/mq/pub_balancer"
|
|
"github.com/seaweedfs/seaweedfs/weed/mq/topic"
|
|
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
|
|
)
|
|
|
|
func (b *MessageQueueBroker) GetOrGenerateLocalPartition(t topic.Topic, partition topic.Partition) (localTopicPartition *topic.LocalPartition, getOrGenError error) {
|
|
// get or generate a local partition
|
|
conf, readConfErr := b.fca.ReadTopicConfFromFiler(t)
|
|
if readConfErr != nil {
|
|
glog.Errorf("topic %v not found: %v", t, readConfErr)
|
|
return nil, fmt.Errorf("topic %v not found: %v", t, readConfErr)
|
|
}
|
|
localTopicPartition, _, getOrGenError = b.doGetOrGenLocalPartition(t, partition, conf)
|
|
if getOrGenError != nil {
|
|
glog.Errorf("topic %v partition %v not setup: %v", t, partition, getOrGenError)
|
|
return nil, fmt.Errorf("topic %v partition %v not setup: %v", t, partition, getOrGenError)
|
|
}
|
|
return localTopicPartition, nil
|
|
}
|
|
|
|
func (b *MessageQueueBroker) doGetOrGenLocalPartition(t topic.Topic, partition topic.Partition, conf *mq_pb.ConfigureTopicResponse) (localPartition *topic.LocalPartition, isGenerated bool, err error) {
|
|
b.accessLock.Lock()
|
|
defer b.accessLock.Unlock()
|
|
|
|
if localPartition = b.localTopicManager.GetLocalPartition(t, partition); localPartition == nil {
|
|
localPartition, isGenerated, err = b.genLocalPartitionFromFiler(t, partition, conf)
|
|
if err != nil {
|
|
return nil, false, err
|
|
}
|
|
}
|
|
return localPartition, isGenerated, nil
|
|
}
|
|
|
|
func (b *MessageQueueBroker) genLocalPartitionFromFiler(t topic.Topic, partition topic.Partition, conf *mq_pb.ConfigureTopicResponse) (localPartition *topic.LocalPartition, isGenerated bool, err error) {
|
|
self := b.option.BrokerAddress()
|
|
for _, assignment := range conf.BrokerPartitionAssignments {
|
|
if assignment.LeaderBroker == string(self) && partition.Equals(topic.FromPbPartition(assignment.Partition)) {
|
|
localPartition = topic.NewLocalPartition(partition, b.genLogFlushFunc(t, assignment.Partition), b.genLogOnDiskReadFunc(t, assignment.Partition))
|
|
b.localTopicManager.AddLocalPartition(t, localPartition)
|
|
isGenerated = true
|
|
break
|
|
}
|
|
}
|
|
|
|
return localPartition, isGenerated, nil
|
|
}
|
|
|
|
func (b *MessageQueueBroker) ensureTopicActiveAssignments(t topic.Topic, conf *mq_pb.ConfigureTopicResponse) (err error) {
|
|
// also fix assignee broker if invalid
|
|
hasChanges := pub_balancer.EnsureAssignmentsToActiveBrokers(b.PubBalancer.Brokers, 1, conf.BrokerPartitionAssignments)
|
|
if hasChanges {
|
|
glog.V(0).Infof("topic %v partition updated assignments: %v", t, conf.BrokerPartitionAssignments)
|
|
if err = b.fca.SaveTopicConfToFiler(t.ToPbTopic(), conf); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
return err
|
|
}
|