From 7a7d1f33d95244b0e6d639e4c8115187b8424f62 Mon Sep 17 00:00:00 2001
From: Vyacheslav Demidyuk <vdemydiuk@gmail.com>
Date: Thu, 23 Jan 2025 23:28:55 +0200
Subject: [PATCH] PyMtApi5: implemented function MarketBookAdd,
 MarketBookRelease

---
 PyMtApi5/client.py       | 18 ++++++++++++++++++
 PyMtApi5/mt5apiclient.py | 10 ++++++++++
 2 files changed, 28 insertions(+)

diff --git a/PyMtApi5/client.py b/PyMtApi5/client.py
index 559a9f5c..79bcef99 100644
--- a/PyMtApi5/client.py
+++ b/PyMtApi5/client.py
@@ -42,6 +42,8 @@ class Mt5ApiApp:
             "SymbolInfoTick": self.process_symbol_info_tick,
             "SymbolInfoSessionQuote": self.process_symbol_info_session_quote,
             "SymbolInfoSessionTrade": self.process_symbol_info_session_trade,
+            "MarketBookAdd": self.process_market_book_add,
+            "MarketBookRelease": self.process_market_book_release,
         }
 
     def on_disconnect(self, error_msg=None):
@@ -248,6 +250,22 @@ class Mt5ApiApp:
         result = mtapi.symbol_info_session_trade(symbol, day_of_week, session_index)
         print(f"> SymbolInfoSessionTrade: response = {result}")
 
+    def process_market_book_add(self, mtapi, parameters):
+        if len(parameters) == 0:
+            print(f"! Invalid parameters for command MarketBookAdd: {parameters} - {len(parameters)}")
+            return
+        symbol = parameters
+        result = mtapi.market_book_add(symbol)
+        print(f"> MarketBookAdd: response = {result}")
+
+    def process_market_book_release(self, mtapi, parameters):
+        if len(parameters) == 0:
+            print(f"! Invalid parameters for command MarketBookRelease: {parameters} - {len(parameters)}")
+            return
+        symbol = parameters
+        result = mtapi.market_book_release(symbol)
+        print(f"> MarketBookRelease: response = {result}")
+
     def mtapi_command_thread(self, mtapi):
         while mtapi.is_connected():
             filename = "client.cmd"
diff --git a/PyMtApi5/mt5apiclient.py b/PyMtApi5/mt5apiclient.py
index 306fd18c..31f49918 100644
--- a/PyMtApi5/mt5apiclient.py
+++ b/PyMtApi5/mt5apiclient.py
@@ -366,6 +366,16 @@ class Mt5ApiClient:
             return (res["Result"]["From"], res["Result"]["To"])
         return None
 
+    # MarketBookAdd
+    def market_book_add(self, symbol: str):
+        cmd_params = {"Symbol": symbol}
+        return self.__send_command(self.__get_default_expert(), Mt5CommandType.MarketBookAdd, cmd_params)
+
+    # MarketBookRelease
+    def market_book_release(self, symbol: str):
+        cmd_params = {"Symbol": symbol}
+        return self.__send_command(self.__get_default_expert(), Mt5CommandType.MarketBookRelease, cmd_params)
+
     # Private methods
 
     def __event_thread_func(self):