Add a command to read an object by its cid

api/api.go

@@ -56,6 +56,7 @@ type FullNode interface {
 	ChainGetBlockMessages(context.Context, cid.Cid) (*BlockMessages, error)
 	ChainGetBlockReceipts(context.Context, cid.Cid) ([]*types.MessageReceipt, error)
 	ChainGetTipSetByHeight(context.Context, uint64, *types.TipSet) (*types.TipSet, error)
+	ChainReadObj(context.Context, cid.Cid) ([]byte, error)
 
 	// syncer
 	SyncState(context.Context) (*SyncState, error)

api/struct.go

@@ -46,6 +46,7 @@ type FullNodeStruct struct {
 		ChainGetBlockMessages  func(context.Context, cid.Cid) (*BlockMessages, error)                     `perm:"read"`
 		ChainGetBlockReceipts  func(context.Context, cid.Cid) ([]*types.MessageReceipt, error)            `perm:"read"`
 		ChainGetTipSetByHeight func(context.Context, uint64, *types.TipSet) (*types.TipSet, error)        `perm:"read"`
+		ChainReadObj           func(context.Context, cid.Cid) ([]byte, error)                             `perm:"read"`
 
 		SyncState func(context.Context) (*SyncState, error) `perm:"read"`
 
@@ -286,6 +287,10 @@ func (c *FullNodeStruct) ChainNotify(ctx context.Context) (<-chan []*store.HeadC
 	return c.Internal.ChainNotify(ctx)
 }
 
+func (c *FullNodeStruct) ChainReadObj(ctx context.Context, obj cid.Cid) ([]byte, error) {
+	return c.Internal.ChainReadObj(ctx, obj)
+}
+
 func (c *FullNodeStruct) SyncState(ctx context.Context) (*SyncState, error) {
 	return c.Internal.SyncState(ctx)
 }