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storage.go
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storage.go
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package plugin
import (
"net/rpc"
"github.com/hashicorp/go-plugin"
"github.com/hashicorp/vault/logical"
)
// StorageClient is an implementation of logical.Storage that communicates
// over RPC.
type StorageClient struct {
client *rpc.Client
}
func (s *StorageClient) List(prefix string) ([]string, error) {
var reply StorageListReply
err := s.client.Call("Plugin.List", prefix, &reply)
if err != nil {
return reply.Keys, err
}
if reply.Error != nil {
return reply.Keys, reply.Error
}
return reply.Keys, nil
}
func (s *StorageClient) Get(key string) (*logical.StorageEntry, error) {
var reply StorageGetReply
err := s.client.Call("Plugin.Get", key, &reply)
if err != nil {
return nil, err
}
if reply.Error != nil {
return nil, reply.Error
}
return reply.StorageEntry, nil
}
func (s *StorageClient) Put(entry *logical.StorageEntry) error {
var reply StoragePutReply
err := s.client.Call("Plugin.Put", entry, &reply)
if err != nil {
return err
}
if reply.Error != nil {
return reply.Error
}
return nil
}
func (s *StorageClient) Delete(key string) error {
var reply StorageDeleteReply
err := s.client.Call("Plugin.Delete", key, &reply)
if err != nil {
return err
}
if reply.Error != nil {
return reply.Error
}
return nil
}
// StorageServer is a net/rpc compatible structure for serving
type StorageServer struct {
impl logical.Storage
}
func (s *StorageServer) List(prefix string, reply *StorageListReply) error {
keys, err := s.impl.List(prefix)
*reply = StorageListReply{
Keys: keys,
Error: plugin.NewBasicError(err),
}
return nil
}
func (s *StorageServer) Get(key string, reply *StorageGetReply) error {
storageEntry, err := s.impl.Get(key)
*reply = StorageGetReply{
StorageEntry: storageEntry,
Error: plugin.NewBasicError(err),
}
return nil
}
func (s *StorageServer) Put(entry *logical.StorageEntry, reply *StoragePutReply) error {
err := s.impl.Put(entry)
*reply = StoragePutReply{
Error: plugin.NewBasicError(err),
}
return nil
}
func (s *StorageServer) Delete(key string, reply *StorageDeleteReply) error {
err := s.impl.Delete(key)
*reply = StorageDeleteReply{
Error: plugin.NewBasicError(err),
}
return nil
}
type StorageListReply struct {
Keys []string
Error *plugin.BasicError
}
type StorageGetReply struct {
StorageEntry *logical.StorageEntry
Error *plugin.BasicError
}
type StoragePutReply struct {
Error *plugin.BasicError
}
type StorageDeleteReply struct {
Error *plugin.BasicError
}