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b9aee2defb
The volume TTL and file TTL are not necessarily the same. as long as file TTL is smaller than volume TTL, it'll be fine. volume TTL is used when assigning file id, e.g. http://.../dir/assign?ttl=3h file TTL is used when uploading
51 lines
1.2 KiB
Go
51 lines
1.2 KiB
Go
package topology
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import (
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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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storageType2VolumeLayout map[string]*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.storageType2VolumeLayout = make(map[string]*VolumeLayout)
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return c
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}
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func (c *Collection) GetOrCreateVolumeLayout(rp *storage.ReplicaPlacement, ttl *storage.TTL) *VolumeLayout {
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keyString := rp.String()
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if ttl != nil {
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keyString += ttl.String()
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}
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if c.storageType2VolumeLayout[keyString] == nil {
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c.storageType2VolumeLayout[keyString] = NewVolumeLayout(rp, ttl, c.volumeSizeLimit)
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}
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return c.storageType2VolumeLayout[keyString]
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}
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func (c *Collection) Lookup(vid storage.VolumeId) []*DataNode {
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for _, vl := range c.storageType2VolumeLayout {
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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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func (c *Collection) ListVolumeServers() (nodes []*DataNode) {
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for _, vl := range c.storageType2VolumeLayout {
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if vl != nil {
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if list := vl.ListVolumeServers(); list != nil {
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nodes = append(nodes, list...)
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}
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}
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}
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return
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}
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