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https://github.com/seaweedfs/seaweedfs.git
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27c74a7e66
change replication_type to ReplicaPlacement, hopefully cleaner code works for 9 possible ReplicaPlacement xyz x : number of copies on other data centers y : number of copies on other racks z : number of copies on current rack x y z each can be 0,1,2 Minor: weed server "-mdir" default to "-dir" if empty
39 lines
1.1 KiB
Go
39 lines
1.1 KiB
Go
package topology
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import (
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"code.google.com/p/weed-fs/go/glog"
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"code.google.com/p/weed-fs/go/storage"
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)
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type Collection struct {
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Name string
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volumeSizeLimit uint64
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replicaType2VolumeLayout []*VolumeLayout
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}
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func NewCollection(name string, volumeSizeLimit uint64) *Collection {
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c := &Collection{Name: name, volumeSizeLimit: volumeSizeLimit}
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c.replicaType2VolumeLayout = make([]*VolumeLayout, storage.ReplicaPlacementCount)
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return c
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}
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func (c *Collection) GetOrCreateVolumeLayout(rp *storage.ReplicaPlacement) *VolumeLayout {
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replicaPlacementIndex := rp.GetReplicationLevelIndex()
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if c.replicaType2VolumeLayout[replicaPlacementIndex] == nil {
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glog.V(0).Infoln("collection", c.Name, "adding replication type", rp)
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c.replicaType2VolumeLayout[replicaPlacementIndex] = NewVolumeLayout(rp, c.volumeSizeLimit)
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}
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return c.replicaType2VolumeLayout[replicaPlacementIndex]
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}
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func (c *Collection) Lookup(vid storage.VolumeId) []*DataNode {
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for _, vl := range c.replicaType2VolumeLayout {
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if vl != nil {
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if list := vl.Lookup(vid); list != nil {
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return list
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}
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}
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}
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return nil
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}
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