package topology import ( "github.com/chrislusf/weed-fs/go/storage" "github.com/chrislusf/weed-fs/go/util" ) type Collection struct { Name string volumeSizeLimit uint64 storageType2VolumeLayout *util.ConcurrentReadMap } func NewCollection(name string, volumeSizeLimit uint64) *Collection { c := &Collection{Name: name, volumeSizeLimit: volumeSizeLimit} c.storageType2VolumeLayout = util.NewConcurrentReadMap() return c } func (c *Collection) GetOrCreateVolumeLayout(rp *storage.ReplicaPlacement, ttl *storage.TTL) *VolumeLayout { keyString := rp.String() if ttl != nil { keyString += ttl.String() } vl := c.storageType2VolumeLayout.Get(keyString, func() interface{} { return NewVolumeLayout(rp, ttl, c.volumeSizeLimit) }) return vl.(*VolumeLayout) } func (c *Collection) Lookup(vid storage.VolumeId) []*DataNode { for _, vl := range c.storageType2VolumeLayout.Items { if vl != nil { if list := vl.(*VolumeLayout).Lookup(vid); list != nil { return list } } } return nil } func (c *Collection) ListVolumeServers() (nodes []*DataNode) { for _, vl := range c.storageType2VolumeLayout.Items { if vl != nil { if list := vl.(*VolumeLayout).ListVolumeServers(); list != nil { nodes = append(nodes, list...) } } } return }