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69 lines
1.6 KiB
69 lines
1.6 KiB
package erasure_coding
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import (
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"fmt"
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"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
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"github.com/chrislusf/seaweedfs/weed/storage/needle"
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)
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// data structure used in master
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type EcVolumeInfo struct {
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VolumeId needle.VolumeId
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Collection string
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shardIds uint16 // use bits to indicate the shard id
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}
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func NewEcVolumeInfo(collection string, vid needle.VolumeId) *EcVolumeInfo {
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return &EcVolumeInfo{
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Collection: collection,
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VolumeId: vid,
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}
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}
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func (ecInfo *EcVolumeInfo) AddShardId(id ShardId) {
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ecInfo.shardIds |= (1 << id)
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}
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func (ecInfo *EcVolumeInfo) RemoveShardId(id ShardId) {
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ecInfo.shardIds &^= (1 << id)
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}
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func (ecInfo *EcVolumeInfo) HasShardId(id ShardId) bool {
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return ecInfo.shardIds&(1<<id) > 0
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}
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func (ecInfo *EcVolumeInfo) ShardIds() (ret []ShardId) {
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for i := ShardId(0); i < DataShardsCount+ParityShardsCount; i++ {
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if ecInfo.HasShardId(i) {
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ret = append(ret, i)
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}
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}
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return
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}
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func (ecInfo *EcVolumeInfo) Minus(other *EcVolumeInfo) (*EcVolumeInfo) {
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ret := &EcVolumeInfo{
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VolumeId: ecInfo.VolumeId,
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Collection: ecInfo.Collection,
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shardIds: ecInfo.shardIds &^ other.shardIds,
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}
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return ret
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}
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func (ecInfo *EcVolumeInfo) ToVolumeEcShardInformationMessage() (ret []*master_pb.VolumeEcShardInformationMessage) {
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for _, shard := range ecInfo.ShardIds() {
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ret = append(ret, &master_pb.VolumeEcShardInformationMessage{
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Id: uint32(ecInfo.VolumeId),
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EcIndex: uint32(shard),
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Collection: ecInfo.Collection,
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})
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}
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return
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}
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func (ecInfo *EcVolumeInfo) String() string {
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return fmt.Sprintf("id:%d shard:%v collection:%v", ecInfo.VolumeId, ecInfo.ShardIds(), ecInfo.Collection)
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}
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