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35 lines
1.1 KiB
35 lines
1.1 KiB
package pub_balancer
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import (
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"errors"
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"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
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)
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var (
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ErrNoBroker = errors.New("no broker")
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)
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func (balancer *Balancer) LookupTopicPartitions(topic *mq_pb.Topic) (assignments []*mq_pb.BrokerPartitionAssignment) {
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// find existing topic partition assignments
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for brokerStatsItem := range balancer.Brokers.IterBuffered() {
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broker, brokerStats := brokerStatsItem.Key, brokerStatsItem.Val
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for topicPartitionStatsItem := range brokerStats.TopicPartitionStats.IterBuffered() {
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topicPartitionStat := topicPartitionStatsItem.Val
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if topicPartitionStat.TopicPartition.Namespace == topic.Namespace &&
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topicPartitionStat.TopicPartition.Name == topic.Name {
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assignment := &mq_pb.BrokerPartitionAssignment{
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Partition: &mq_pb.Partition{
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RingSize: MaxPartitionCount,
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RangeStart: topicPartitionStat.RangeStart,
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RangeStop: topicPartitionStat.RangeStop,
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UnixTimeNs: topicPartitionStat.UnixTimeNs,
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},
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}
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// TODO fix follower setting
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assignment.LeaderBroker = broker
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assignments = append(assignments, assignment)
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}
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}
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}
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return
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}
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