92 lines
1.6 KiB
Go
92 lines
1.6 KiB
Go
package storage
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import (
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"bytes"
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)
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type aclKeys struct {
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spaceId string
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rootKey []byte
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headKey []byte
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}
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func newACLKeys(spaceId string) aclKeys {
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return aclKeys{
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spaceId: spaceId,
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rootKey: joinStringsToBytes("space", spaceId, "a", "rootId"),
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headKey: joinStringsToBytes("space", spaceId, "a", "headId"),
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}
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}
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func (a aclKeys) HeadIdKey() []byte {
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return a.headKey
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}
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func (a aclKeys) RootIdKey() []byte {
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return a.rootKey
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}
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func (a aclKeys) RawRecordKey(id string) []byte {
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return joinStringsToBytes("space", a.spaceId, "a", id)
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}
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type treeKeys struct {
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id string
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spaceId string
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headsKey []byte
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rootKey []byte
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}
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func newTreeKeys(spaceId, id string) treeKeys {
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return treeKeys{
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id: id,
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spaceId: spaceId,
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headsKey: joinStringsToBytes("space", spaceId, "t", id, "heads"),
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rootKey: joinStringsToBytes("space", spaceId, "t", id),
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}
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}
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func (t treeKeys) HeadsKey() []byte {
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return t.headsKey
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}
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func (t treeKeys) RootIdKey() []byte {
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return t.rootKey
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}
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func (t treeKeys) RawChangeKey(id string) []byte {
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return joinStringsToBytes("space", t.spaceId, "t", t.id, id)
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}
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type spaceKeys struct {
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headerKey []byte
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}
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func newSpaceKeys(spaceId string) spaceKeys {
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return spaceKeys{headerKey: joinStringsToBytes("space", spaceId)}
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}
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func (s spaceKeys) HeaderKey() []byte {
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return s.headerKey
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}
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func joinStringsToBytes(strs ...string) []byte {
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var (
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b bytes.Buffer
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totalLen int
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)
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for _, s := range strs {
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totalLen += len(s)
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}
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// adding separators
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totalLen += len(strs) - 1
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b.Grow(totalLen)
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for idx, s := range strs {
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if idx > 0 {
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b.WriteString("/")
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}
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b.WriteString(s)
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}
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return b.Bytes()
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}
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