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kvstore.go
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kvstore.go
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package system
import (
"context"
"reflect"
"github.com/rancher/opni/pkg/storage"
"github.com/samber/lo"
"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/types/known/emptypb"
)
type kvStoreServer struct {
UnsafeKeyValueStoreServer
store storage.KeyValueStore
}
func (s *kvStoreServer) Put(ctx context.Context, kv *KeyValue) (*emptypb.Empty, error) {
err := s.store.Put(ctx, kv.GetKey(), kv.GetValue())
if err != nil {
return nil, err
}
return &emptypb.Empty{}, nil
}
func (s *kvStoreServer) Get(ctx context.Context, key *Key) (*Value, error) {
data, err := s.store.Get(ctx, key.GetKey())
if err != nil {
return nil, err
}
return &Value{
Value: data,
}, nil
}
func (s *kvStoreServer) Delete(ctx context.Context, key *Key) (*emptypb.Empty, error) {
err := s.store.Delete(ctx, key.GetKey())
if err != nil {
return nil, err
}
return &emptypb.Empty{}, nil
}
func (s *kvStoreServer) ListKeys(ctx context.Context, key *Key) (*KeyList, error) {
items, err := s.store.ListKeys(ctx, key.GetKey())
if err != nil {
return nil, err
}
return &KeyList{
Items: items,
}, nil
}
type kvStoreClientImpl[T proto.Message] struct {
client KeyValueStoreClient
}
func (c *kvStoreClientImpl[T]) Put(ctx context.Context, key string, value T) error {
wire, err := proto.Marshal(value)
if err != nil {
return err
}
kv := &KeyValue{
Key: key,
Value: wire,
}
_, err = c.client.Put(ctx, kv)
return err
}
func (c *kvStoreClientImpl[T]) Get(ctx context.Context, key string) (T, error) {
value, err := c.client.Get(ctx, &Key{
Key: key,
})
if err != nil {
return lo.Empty[T](), err
}
var t T
tType := reflect.TypeOf(t)
rt := reflect.New(tType.Elem()).Interface().(T)
err = proto.Unmarshal(value.GetValue(), rt)
if err != nil {
return t, err
}
return rt, nil
}
func (c *kvStoreClientImpl[T]) Delete(ctx context.Context, key string) error {
_, err := c.client.Delete(ctx, &Key{
Key: key,
})
return err
}
func (c *kvStoreClientImpl[T]) ListKeys(ctx context.Context, prefix string) ([]string, error) {
resp, err := c.client.ListKeys(ctx, &Key{
Key: prefix,
})
if err != nil {
return nil, err
}
return resp.Items, nil
}
func NewKVStoreClient[T proto.Message](client KeyValueStoreClient) storage.KeyValueStoreT[T] {
return &kvStoreClientImpl[T]{
client: client,
}
}