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fix(client): refactor duplicated replica+partition logic #2925

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fix(client): refactor duplicated replica+partition logic #2925

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57b9397
fix(client): refactor duplicated replica logic
Trinoooo Jun 11, 2024
496e760
fix(client): refactor duplicated partition logic
Trinoooo Jun 12, 2024
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90 changes: 22 additions & 68 deletions client.go
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Original file line number Diff line number Diff line change
Expand Up @@ -363,34 +363,19 @@ func (client *client) MetadataTopics() ([]string, error) {
}

func (client *client) Partitions(topic string) ([]int32, error) {
if client.Closed() {
return nil, ErrClosedClient
}

partitions := client.cachedPartitions(topic, allPartitions)

if len(partitions) == 0 {
err := client.RefreshMetadata(topic)
if err != nil {
return nil, err
}
partitions = client.cachedPartitions(topic, allPartitions)
}

// no partitions found after refresh metadata
if len(partitions) == 0 {
return nil, ErrUnknownTopicOrPartition
}

return partitions, nil
return client.getPartitions(topic, allPartitions)
}

func (client *client) WritablePartitions(topic string) ([]int32, error) {
return client.getPartitions(topic, writablePartitions)
}

func (client *client) getPartitions(topic string, pt partitionType) ([]int32, error) {
if client.Closed() {
return nil, ErrClosedClient
}

partitions := client.cachedPartitions(topic, writablePartitions)
partitions := client.cachedPartitions(topic, pt)

// len==0 catches when it's nil (no such topic) and the odd case when every single
// partition is undergoing leader election simultaneously. Callers have to be able to handle
Expand All @@ -403,7 +388,7 @@ func (client *client) WritablePartitions(topic string) ([]int32, error) {
if err != nil {
return nil, err
}
partitions = client.cachedPartitions(topic, writablePartitions)
partitions = client.cachedPartitions(topic, pt)
}

if partitions == nil {
Expand All @@ -414,56 +399,24 @@ func (client *client) WritablePartitions(topic string) ([]int32, error) {
}

func (client *client) Replicas(topic string, partitionID int32) ([]int32, error) {
if client.Closed() {
return nil, ErrClosedClient
}

metadata := client.cachedMetadata(topic, partitionID)

if metadata == nil {
err := client.RefreshMetadata(topic)
if err != nil {
return nil, err
}
metadata = client.cachedMetadata(topic, partitionID)
}

if metadata == nil {
return nil, ErrUnknownTopicOrPartition
}

if errors.Is(metadata.Err, ErrReplicaNotAvailable) {
return dupInt32Slice(metadata.Replicas), metadata.Err
}
return dupInt32Slice(metadata.Replicas), nil
return client.getReplicas(topic, partitionID, func(metadata *PartitionMetadata) []int32 {
return metadata.Replicas
})
}

func (client *client) InSyncReplicas(topic string, partitionID int32) ([]int32, error) {
if client.Closed() {
return nil, ErrClosedClient
}

metadata := client.cachedMetadata(topic, partitionID)

if metadata == nil {
err := client.RefreshMetadata(topic)
if err != nil {
return nil, err
}
metadata = client.cachedMetadata(topic, partitionID)
}

if metadata == nil {
return nil, ErrUnknownTopicOrPartition
}

if errors.Is(metadata.Err, ErrReplicaNotAvailable) {
return dupInt32Slice(metadata.Isr), metadata.Err
}
return dupInt32Slice(metadata.Isr), nil
return client.getReplicas(topic, partitionID, func(metadata *PartitionMetadata) []int32 {
return metadata.Isr
})
}

func (client *client) OfflineReplicas(topic string, partitionID int32) ([]int32, error) {
return client.getReplicas(topic, partitionID, func(metadata *PartitionMetadata) []int32 {
return metadata.OfflineReplicas
})
}

func (client *client) getReplicas(topic string, partitionID int32, extractor func(metadata *PartitionMetadata) []int32) ([]int32, error) {
if client.Closed() {
return nil, ErrClosedClient
}
Expand All @@ -482,10 +435,11 @@ func (client *client) OfflineReplicas(topic string, partitionID int32) ([]int32,
return nil, ErrUnknownTopicOrPartition
}

replicas := extractor(metadata)
if errors.Is(metadata.Err, ErrReplicaNotAvailable) {
return dupInt32Slice(metadata.OfflineReplicas), metadata.Err
return dupInt32Slice(replicas), metadata.Err
}
return dupInt32Slice(metadata.OfflineReplicas), nil
return dupInt32Slice(replicas), nil
}

func (client *client) Leader(topic string, partitionID int32) (*Broker, error) {
Expand Down
7 changes: 3 additions & 4 deletions utils.go
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Original file line number Diff line number Diff line change
Expand Up @@ -44,11 +44,10 @@ func withRecover(fn func()) {
}

func safeAsyncClose(b *Broker) {
tmp := b // local var prevents clobbering in goroutine
go withRecover(func() {
if connected, _ := tmp.Connected(); connected {
if err := tmp.Close(); err != nil {
Logger.Println("Error closing broker", tmp.ID(), ":", err)
if connected, _ := b.Connected(); connected {
if err := b.Close(); err != nil {
Logger.Println("Error closing broker", b.ID(), ":", err)
}
}
})
Expand Down
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