Update zgs rpc (#58)

node/client_zgs.go

@@ -52,6 +52,13 @@ func (c *ZgsClient) GetStatus(ctx context.Context) (status Status, err error) {
 	return
 }
 
+// CheckFileFinalized Call zgs_checkFileFinalized to check if specified file is finalized.
+// Returns nil if file not available on storage node.
+func (c *ZgsClient) CheckFileFinalized(ctx context.Context, txSeqOrRoot TxSeqOrRoot) (finalized *bool, err error) {
+	err = c.wrapError(c.CallContext(ctx, &finalized, "zgs_checkFileFinalized", txSeqOrRoot), "zgs_checkFileFinalized")
+	return
+}
+
 // GetFileInfo Call zgs_getFileInfo RPC to get the information of a file by file data root from the node.
 func (c *ZgsClient) GetFileInfo(ctx context.Context, root common.Hash) (file *FileInfo, err error) {
 	err = c.wrapError(c.CallContext(ctx, &file, "zgs_getFileInfo", root), "zgs_getFileInfo")

node/types.go

@@ -1,6 +1,8 @@
 package node
 
 import (
+	"encoding/json"
+
 	"github.com/0glabs/0g-storage-client/common/shard"
 	"github.com/0glabs/0g-storage-client/core/merkle"
 	"github.com/ethereum/go-ethereum/common"
@@ -26,6 +28,7 @@ type Status struct {
 	ConnectedPeers  uint            `json:"connectedPeers"`
 	LogSyncHeight   uint64          `json:"logSyncHeight"`
 	LogSyncBlock    common.Hash     `json:"logSyncBlock"`
+	NextTxSeq       uint64          `json:"nextTxSeq"`
 	NetworkIdentity NetworkIdentity `json:"networkIdentity"`
 }
 
@@ -142,3 +145,18 @@ type LocationInfo struct {
 	Ip          string            `json:"ip"`
 	ShardConfig shard.ShardConfig `json:"shardConfig"`
 }
+
+// TxSeqOrRoot represents a tx seq or data root.
+type TxSeqOrRoot struct {
+	TxSeq uint64
+	Root  common.Hash
+}
+
+// MarshalJSON implements json.Marshaler interface.
+func (t TxSeqOrRoot) MarshalJSON() ([]byte, error) {
+	if t.Root.Cmp(common.Hash{}) == 0 {
+		return json.Marshal(t.TxSeq)
+	}
+
+	return json.Marshal(t.Root)
+}