[OKEX Futures] Add market order support

brokers/okex-futures-broker/broker.go

@@ -129,11 +129,13 @@ func (b *OKEXFuturesBroker) PlaceOrder(symbol string, direction Direction, order
 		}
 	}
 	var _orderType int
-	if reduceOnly {
+	var matchPrice int
+	if postOnly {
 		_orderType = 1
 	}
-	var matchPrice int
 	if orderType == OrderTypeMarket {
+		price = 0
+		_orderType = 4
 		matchPrice = 1
 	}
 	var newOrderParams okex.FuturesNewOrderParams

go.mod

@@ -8,7 +8,7 @@ require (
 	github.com/frankrap/bybit-api v0.0.0-20200322001335-e3990ed82944
 	github.com/frankrap/deribit-api v0.0.0-20200322001639-1fbbf5c14797
 	github.com/frankrap/huobi-api v0.0.0-20200322001841-f013851fc396
-	github.com/frankrap/okex-api v0.0.0-20200324025205-4b3fe2deebd3
+	github.com/frankrap/okex-api v0.0.0-20200403022040-48202f46958d
 	github.com/sony/sonyflake v1.0.0
 	github.com/spf13/viper v1.6.2
 	golang.org/x/sys v0.0.0-20200321134203-328b4cd54aae // indirect

go.sum

@@ -105,6 +105,8 @@ github.com/frankrap/huobi-api v0.0.0-20200322001841-f013851fc396 h1:PCSetqqyIS7S
 github.com/frankrap/huobi-api v0.0.0-20200322001841-f013851fc396/go.mod h1:qRToModVi2quhh8aw9uA2j/7GPLb3wnmlSEX/X6m1mQ=
 github.com/frankrap/okex-api v0.0.0-20200324025205-4b3fe2deebd3 h1:hA0eoREcKFl0giOvZzbC852qu73sIqgkS9mlP0wVTjs=
 github.com/frankrap/okex-api v0.0.0-20200324025205-4b3fe2deebd3/go.mod h1:45g+ebGPCdH3j8plJkgsVz6xP8PkNyPjpDCYoYItsi0=
+github.com/frankrap/okex-api v0.0.0-20200403022040-48202f46958d h1:dJdh8KmGYOMZ1fLly7YKzChDc/QBUOrRVqqy7ld7kZc=
+github.com/frankrap/okex-api v0.0.0-20200403022040-48202f46958d/go.mod h1:45g+ebGPCdH3j8plJkgsVz6xP8PkNyPjpDCYoYItsi0=
 github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsouza/go-dockerclient v1.4.4/go.mod h1:PrwszSL5fbmsESocROrOGq/NULMXRw+bajY0ltzD6MA=