From aeacca273d0400c2e916cb9f97c47fc74b126991 Mon Sep 17 00:00:00 2001
From: Tuna <ng.tuna@gmail.com>
Date: Thu, 25 Jul 2019 11:43:54 +0700
Subject: [PATCH] remove processed order in mongodb, only keep cancelled order

---
 tomox/tomox.go | 31 ++++++++++++++++++++++++++-----
 1 file changed, 26 insertions(+), 5 deletions(-)

diff --git a/tomox/tomox.go b/tomox/tomox.go
index dd6b2254c502..7f26ec429d06 100644
--- a/tomox/tomox.go
+++ b/tomox/tomox.go
@@ -755,7 +755,7 @@ func (tomox *TomoX) CancelOrder(order *OrderItem, dryrun bool) error {
 			return err
 		}
 		if o := tomox.getOrderPending(order.Hash); o != nil {
-			if err := tomox.removeOrderPending(order.Hash); err != nil {
+			if err := tomox.cancelOrderPending(order.Hash); err != nil {
 				return err
 			}
 		}
@@ -912,12 +912,12 @@ func (tomox *TomoX) addOrderPending(order *OrderItem) error {
 	return nil
 }
 
-func (tomox *TomoX) removeOrderPending(orderHash common.Hash) error {
+func (tomox *TomoX) cancelOrderPending(orderHash common.Hash) error {
 	prefix := []byte(pendingPrefix)
 	key := append(prefix, orderHash.Bytes()...)
-	log.Debug("Remove order pending", "orderHash", orderHash, "key", hex.EncodeToString(key))
+	log.Debug("Cancel order pending", "orderHash", orderHash, "key", hex.EncodeToString(key))
 	if tomox.IsSDKNode() {
-		log.Debug("Update order status to CANCELLED", "orderHash", orderHash)
+		log.Debug("Update order status to CANCELLED in sdk node", "orderHash", orderHash)
 		data, err := tomox.db.Get(key, &OrderItem{}, false)
 		if err != nil || data == nil {
 			log.Error("Order doesn't exist in pending", "orderHash", orderHash, "err", err)
@@ -926,7 +926,6 @@ func (tomox *TomoX) removeOrderPending(orderHash common.Hash) error {
 		switch data.(type) {
 		case *OrderItem:
 			o := data.(*OrderItem)
-			//change status to CANCELLED then put it back to DB
 			o.Status = Cancel
 			if err = tomox.db.Put(key, o, false); err != nil {
 				log.Error("Can't update order status in mongo", "err", err)
@@ -945,6 +944,28 @@ func (tomox *TomoX) removeOrderPending(orderHash common.Hash) error {
 	return nil
 }
 
+func (tomox *TomoX) removeOrderPending(orderHash common.Hash) error {
+	prefix := []byte(pendingPrefix)
+	key := append(prefix, orderHash.Bytes()...)
+	log.Debug("Remove order pending", "orderHash", orderHash, "key", hex.EncodeToString(key))
+	data, err := tomox.db.Get(key, &OrderItem{}, false)
+	if err != nil || data == nil {
+		log.Error("Order doesn't exist in pending", "orderHash", orderHash, "err", err)
+		return err
+	}
+	switch data.(type) {
+	case *OrderItem:
+		if err := tomox.db.Delete(key, false); err != nil {
+			log.Error("Fail to delete order pending", "err", err)
+			return err
+		}
+	default:
+		return fmt.Errorf("Order is corrupted")
+	}
+
+	return nil
+}
+
 func (tomox *TomoX) addPendingHash(orderHash common.Hash) error {
 	log.Debug("Add pending hash", "orderHash", orderHash)
 	pendingHashes := tomox.getPendingHashes()