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package topology
import (
"github.com/seaweedfs/seaweedfs/weed/util/log"
"github.com/seaweedfs/seaweedfs/weed/pb"
"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
"github.com/seaweedfs/seaweedfs/weed/storage/erasure_coding"
"github.com/seaweedfs/seaweedfs/weed/storage/needle"
)
type EcShardLocations struct {
Collection string
Locations [erasure_coding.TotalShardsCount][]*DataNode
}
func (t *Topology) SyncDataNodeEcShards(shardInfos []*master_pb.VolumeEcShardInformationMessage, dn *DataNode) (newShards, deletedShards []*erasure_coding.EcVolumeInfo) {
// convert into in memory struct storage.VolumeInfo
var shards []*erasure_coding.EcVolumeInfo
for _, shardInfo := range shardInfos {
shards = append(shards,
erasure_coding.NewEcVolumeInfo(
shardInfo.DiskType,
shardInfo.Collection,
needle.VolumeId(shardInfo.Id),
erasure_coding.ShardBits(shardInfo.EcIndexBits),
shardInfo.ExpireAtSec))
}
// find out the delta volumes
newShards, deletedShards = dn.UpdateEcShards(shards)
for _, v := range newShards {
t.RegisterEcShards(v, dn)
}
for _, v := range deletedShards {
t.UnRegisterEcShards(v, dn)
}
return
}
func (t *Topology) IncrementalSyncDataNodeEcShards(newEcShards, deletedEcShards []*master_pb.VolumeEcShardInformationMessage, dn *DataNode) {
// convert into in memory struct storage.VolumeInfo
var newShards, deletedShards []*erasure_coding.EcVolumeInfo
for _, shardInfo := range newEcShards {
newShards = append(newShards,
erasure_coding.NewEcVolumeInfo(
shardInfo.DiskType,
shardInfo.Collection,
needle.VolumeId(shardInfo.Id),
erasure_coding.ShardBits(shardInfo.EcIndexBits), shardInfo.ExpireAtSec))
}
for _, shardInfo := range deletedEcShards {
deletedShards = append(deletedShards,
erasure_coding.NewEcVolumeInfo(
shardInfo.DiskType,
shardInfo.Collection,
needle.VolumeId(shardInfo.Id),
erasure_coding.ShardBits(shardInfo.EcIndexBits), shardInfo.ExpireAtSec))
}
dn.DeltaUpdateEcShards(newShards, deletedShards)
for _, v := range newShards {
t.RegisterEcShards(v, dn)
}
for _, v := range deletedShards {
t.UnRegisterEcShards(v, dn)
}
return
}
func NewEcShardLocations(collection string) *EcShardLocations {
return &EcShardLocations{
Collection: collection,
}
}
func (loc *EcShardLocations) AddShard(shardId erasure_coding.ShardId, dn *DataNode) (added bool) {
dataNodes := loc.Locations[shardId]
for _, n := range dataNodes {
if n.Id() == dn.Id() {
return false
}
}
loc.Locations[shardId] = append(dataNodes, dn)
return true
}
func (loc *EcShardLocations) DeleteShard(shardId erasure_coding.ShardId, dn *DataNode) (deleted bool) {
dataNodes := loc.Locations[shardId]
foundIndex := -1
for index, n := range dataNodes {
if n.Id() == dn.Id() {
foundIndex = index
}
}
if foundIndex < 0 {
return false
}
loc.Locations[shardId] = append(dataNodes[:foundIndex], dataNodes[foundIndex+1:]...)
return true
}
func (t *Topology) RegisterEcShards(ecShardInfos *erasure_coding.EcVolumeInfo, dn *DataNode) {
t.ecShardMapLock.Lock()
defer t.ecShardMapLock.Unlock()
locations, found := t.ecShardMap[ecShardInfos.VolumeId]
if !found {
locations = NewEcShardLocations(ecShardInfos.Collection)
t.ecShardMap[ecShardInfos.VolumeId] = locations
}
for _, shardId := range ecShardInfos.ShardIds() {
locations.AddShard(shardId, dn)
}
}
func (t *Topology) UnRegisterEcShards(ecShardInfos *erasure_coding.EcVolumeInfo, dn *DataNode) {
log.Infof("removing ec shard info:%+v", ecShardInfos)
t.ecShardMapLock.Lock()
defer t.ecShardMapLock.Unlock()
locations, found := t.ecShardMap[ecShardInfos.VolumeId]
if !found {
return
}
for _, shardId := range ecShardInfos.ShardIds() {
locations.DeleteShard(shardId, dn)
}
}
func (t *Topology) LookupEcShards(vid needle.VolumeId) (locations *EcShardLocations, found bool) {
t.ecShardMapLock.RLock()
defer t.ecShardMapLock.RUnlock()
locations, found = t.ecShardMap[vid]
return
}
func (t *Topology) ListEcServersByCollection(collection string) (dataNodes []pb.ServerAddress) {
t.ecShardMapLock.RLock()
defer t.ecShardMapLock.RUnlock()
dateNodeMap := make(map[pb.ServerAddress]bool)
for _, ecVolumeLocation := range t.ecShardMap {
if ecVolumeLocation.Collection == collection {
for _, locations := range ecVolumeLocation.Locations {
for _, loc := range locations {
dateNodeMap[loc.ServerAddress()] = true
}
}
}
}
for k, _ := range dateNodeMap {
dataNodes = append(dataNodes, k)
}
return
}
func (t *Topology) DeleteEcCollection(collection string) {
t.ecShardMapLock.Lock()
defer t.ecShardMapLock.Unlock()
var vids []needle.VolumeId
for vid, ecVolumeLocation := range t.ecShardMap {
if ecVolumeLocation.Collection == collection {
vids = append(vids, vid)
}
}
for _, vid := range vids {
delete(t.ecShardMap, vid)
}
return
}
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