forked from TrueCloudLab/frostfs-contract
79 lines
2.1 KiB
Go
79 lines
2.1 KiB
Go
package policy
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import (
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"git.frostfs.info/TrueCloudLab/frostfs-contract/common"
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"github.com/nspcc-dev/neo-go/pkg/interop/iterator"
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"github.com/nspcc-dev/neo-go/pkg/interop/storage"
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)
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// Kind represents the object the chain is attached to.
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// Currently only namespace and container are supported.
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type Kind byte
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const (
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Namespace = 'n'
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Container = 'c'
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IAM = 'i'
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)
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// _deploy function sets up initial list of inner ring public keys.
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func _deploy(data interface{}, isUpdate bool) {
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}
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func storageKey(prefix Kind, entityName, name string) []byte {
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ln := len(entityName)
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key := append([]byte{byte(prefix)}, byte(ln&0xFF), byte(ln>>8))
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key = append(key, entityName...)
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return append(key, name...)
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}
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func AddChain(entity Kind, entityName, name string, chain []byte) {
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common.CheckAlphabetWitness() // TODO: Allow to work with chain directly for everyone?
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ctx := storage.GetContext()
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key := storageKey(entity, entityName, name)
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storage.Put(ctx, key, chain)
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}
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func RemoveChain(entity Kind, entityName string, name string) {
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common.CheckAlphabetWitness()
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ctx := storage.GetContext()
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key := storageKey(entity, entityName, name)
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storage.Delete(ctx, key)
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}
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func RemoveChainsByPrefix(entity Kind, entityName string, name string) {
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common.CheckAlphabetWitness()
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ctx := storage.GetContext()
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key := storageKey(entity, entityName, name)
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it := storage.Find(ctx, key, storage.KeysOnly)
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for iterator.Next(it) {
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storage.Delete(ctx, iterator.Value(it).([]byte))
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}
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}
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// ListChains lists all chains for the namespace by prefix.
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// container may be empty.
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func ListChains(namespace, container, name string) [][]byte {
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ctx := storage.GetReadOnlyContext()
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var result [][]byte
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prefixNs := storageKey(Namespace, namespace, name)
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it := storage.Find(ctx, prefixNs, storage.ValuesOnly)
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for iterator.Next(it) {
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result = append(result, iterator.Value(it).([]byte))
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}
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if container != "" {
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prefixCnr := storageKey(Container, container, name)
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it = storage.Find(ctx, prefixCnr, storage.ValuesOnly)
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for iterator.Next(it) {
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result = append(result, iterator.Value(it).([]byte))
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}
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}
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return result
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}
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