USER
i want to send Trading data from MT4 to Supabase. I wrote an EA which is working in general, but i found out, that MT4 limitations lacks header in webrequest, so I installed an ZeroMQ library and set it up in MT4. Following I give you the readme of the library and my EA, so i can use zeromq as intermediate service. so, please help me to convert/rewrite my initial EA to send everything to ZeroMQ instead of Supabase directly. As well i need a Python script which sends everything to Supabase. please help me with that as well.
ZeroMQ Library Readme:
```bash
mql-zmq
ZMQ binding for the MQL language (both 32bit MT4 and 64bit MT5)
1. Introduction
2. Files and Installation
3. About string encoding
4. Notes on context creation
5. Usage
6. TODO
7. Changes
8. Donation
Introduction
This is a complete binding of the ZeroMQ library for the MQL4/5 language provided by MetaTrader4/5.
Traders with programming abilities have always wanted a messaging solution like ZeroMQ, simple and powerful, far better than the PIPE trick as suggested by the official articles. However, bindings for MQL were either outdated or not complete (mostly toy projects and only basic features are implemented). This binding is based on latest 4.2 version of the library, and provides all functionalities as specified in the API documentation.
This binding tries to remain compatible between MQL4/5. Users of both versions can use this binding, with a single set of headers. MQL4 and MQL5 are basically the same in that they are merged in recent versions. The difference is in the runtime environment (MetaTrader5 is 64bit by default, while MetaTrader4 is 32bit). The trading system is also different, but it is no concern of this binding.
Files and Installation
This binding contains three sets of files:
The binding itself is in the Include/Zmq directory. Note that there is a Mql directory in Include, which is part of the mql4-lib. Previous Common.mqh and GlobalHandle.mqh are actually from this library. At release 1.4, this becomes a direct reference, with mql4-lib content copied here verbatim. It is recommended you install the full mql4-lib, as it contains a lot other features. But for those who want to use mql-zmq alone, it is OK to deploy only the small subset included here.
The testing scripts and zmq guide examples are in Scripts directory. The script files are mq4 by default, but you can change the extension to mq5 to use them in MetaTrader5.
Precompiled DLLs of both 64bit (Library/MT5) and 32bit (Library/MT4) ZeroMQ (4.2.0) and libsodium (1.0.11) are provided. Copy the corresponding DLLs to the Library folder of your MetaTrader terminal. If you are using MT5 32bit, use the 32bit version from Library/MT4. The DLLs require that you have the latest Visual C++ runtime (2015).
Note that if you are using MT5 32bit, you need to comment out the __X64__ macro definition at the top of the Include/Mql/Lang/Native.mqh. I assume MT5 is 64 bit, since their is no way to detect 32 bit by native macros, and to define pointer related values a macro like this is required.
Note that these DLLs are compiled from official sources, without any modification. You can compile your own if you don't trust these binaries. The libsodium.dll is copied from the official binary release. If you want to support security mechanisms other than curve, or you want to use transports like OpenPGM, you need to compile your own DLL.
Note for WINE users, if the default binaries do not work for you, you can try the binaries in the Library/VC2010 directory. The new binaries are a little newer (libzmq 4.2.2 and libsodium 1.0.36). They are compiled with Visual C++ 2010 Express SP1 (using the Windows SDK 7.1), and supposed to be more compatible to WINE than the VS2015 version. They depend on VC2010 runtime (msvcr100.dll and msvcp100.dll). I have actually tested the old and the new DLLs on WINE 2.0.3 (Debian Jessie PlayOnLinux 32bit with MetaTrader4 build 1090) and they both work. So it is not guarenteed but it is nice to have an alternative. The new libzmq.dll only runs on vista or newer windows because I turned on the using poll option. This improves performance a little bit. Since MetaTrader4 officially no longer supports Windows XP, I assume this would not be a problem.
About string encoding
MQL strings are Win32 UNICODE strings (basically 2-byte UTF-16). In this binding all strings are converted to utf-8 strings before sending to the dll layer. The ZmqMsg supports a constructor from MQL strings, the default is NOT null-terminated.
Notes on context creation
In the official guide:
You should create and use exactly one context in your process. Technically, the context is the container for all sockets in a single process, and acts as the transport for inproc sockets, which are the fastest way to connect threads in one process. If at runtime a process has two contexts, these are like separate ZeroMQ instances.
In MetaTrader, every Script and Expert Advsior has its own thread, but they all share a process, that is the Terminal. So it is advised to use a single global context on all your MQL programs. The shared parameter of Context is used for sychronization of context creation and destruction. It is better named globally, and in a manner not easily recognized by humans, for example: __3kewducdxhkd__
Usage
You can find a simple test script in Scripts/Test, and you can find examples of the official guide in Scripts/ZeroMQGuideExamples. I intend to translate all examples to this binding, but now only the hello world example is provided. I will gradually add those examples. Of course forking this binding if you are interested and welcome to send pull requests.
Here is a sample from HelloWorldServer.mq4:
#include <Zmq/Zmq.mqh>
//+------------------------------------------------------------------+
//| Hello World server in MQL |
//| Binds REP socket to tcp://*:5555 |
//| Expects "Hello" from client, replies with "World" |
//+------------------------------------------------------------------+
void OnStart()
{
Context context("helloworld");
Socket socket(context,ZMQ_REP);
socket.bind("tcp://*:5555");
while(true)
{
ZmqMsg request;
// Wait for next request from client
// MetaTrader note: this will block the script thread
// and if you try to terminate this script, MetaTrader
// will hang (and crash if you force closing it)
socket.recv(request);
Print("Receive Hello");
Sleep(1000);
ZmqMsg reply("World");
// Send reply back to client
socket.send(reply);
}
}
```
My initial MQL4 EA, for sending account info and position infos to Supabase tables:
//+------------------------------------------------------------------+
//| SendAccountInfoToSupabase |
//| Developed by OpenAI Assistant |
//+------------------------------------------------------------------+
#property copyright "Developed by OpenAI"
#property link "https://openai.com/"
#property version "1.00"
#property strict
// Input parameters for Supabase credentials
input string SupabaseURL = "https://setvyoukjbykdzhjzxum.supabase.co/rest/v1"; // Supabase REST API base URL
input string SupabaseAPIKey = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJzdXBhYmFzZSIsInJlZiI6InNldHZ5b3VramJ5a2R6aGp6eHVtIiwicm9sZSI6ImFub24iLCJpYXQiOjE3MjM1NzMyNjUsImV4cCI6MjAzOTE0OTI2NX0.vXLfu33mQJE4EsQCdmx-AN5nU81dUPx1pnV9K2Pv3hk"; // Supabase API Key
// Input parameter for how often to send data (in seconds)
input int UpdateInterval = 60; // Update interval in seconds
// Global variable to keep track of last time data was sent
datetime LastUpdateTime = 0;
//+------------------------------------------------------------------+
//| Expert initialization function |
//+------------------------------------------------------------------+
int OnInit()
{
// Print a message to remind the user to allow the WebRequest for the Supabase URL
Print("Please ensure that the Supabase URL is added to the list of allowed URLs in Tools -> Options -> Expert Advisors.");
return(INIT_SUCCEEDED);
}
//+------------------------------------------------------------------+
//| Expert tick function |
//+------------------------------------------------------------------+
void OnTick()
{
// Check if it's time to send data
if(TimeCurrent() - LastUpdateTime >= UpdateInterval)
{
// Collect data and send to Supabase
SendAccountData();
LastUpdateTime = TimeCurrent();
}
}
//+------------------------------------------------------------------+
//| Function to send account data to Supabase |
//+------------------------------------------------------------------+
void SendAccountData()
{
// Collect account info
string account_data = GetAccountInfoJSON();
// Encode the API key (if necessary)
string encoded_apikey = UrlEncode(SupabaseAPIKey);
// Send account info
string account_url = SupabaseURL + "/account_info?apikey=" + encoded_apikey;
int status_code = SendJSONToSupabase(account_data, account_url);
if(status_code == 200 || status_code == 201)
Print("Account data sent successfully to Supabase.");
else
Print("Failed to send account data to Supabase. HTTP status code: ", status_code);
// Collect positions and orders info
string positions_data = GetPositionsInfoJSONArray(); // Returns JSON array of positions
// Send positions data
string positions_url = SupabaseURL + "/positions_info?apikey=" + encoded_apikey;
status_code = SendJSONToSupabase(positions_data, positions_url);
if(status_code == 200 || status_code == 201)
Print("Positions data sent successfully to Supabase.");
else
Print("Failed to send positions data to Supabase. HTTP status code: ", status_code);
}
//+------------------------------------------------------------------+
//| Function to URL-encode a string |
//+------------------------------------------------------------------+
string UrlEncode(string str)
{
string result = "";
for(int i = 0; i < StringLen(str); i++)
{
int c = StringGetChar(str, i);
if( (c >= '0' && c <= '9') ||
(c >= 'A' && c <= 'Z') ||
(c >= 'a' && c <= 'z') ||
c == '-' || c == '_' || c == '.' || c == '~')
{
result += CharToString((char)c);
}
else
{
result += "%" + StringFormat("%02X", c);
}
}
return(result);
}
//+------------------------------------------------------------------+
//| Function to collect account info and return as JSON string |
//+------------------------------------------------------------------+
string GetAccountInfoJSON()
{
string json = "{";
json += "\"balance\":" + DoubleToString(AccountBalance(), 2) + ",";
json += "\"credit\":" + DoubleToString(AccountCredit(), 2) + ",";
json += "\"company\":\"" + EscapeString(AccountCompany()) + "\",";
json += "\"currency\":\"" + AccountCurrency() + "\",";
json += "\"equity\":" + DoubleToString(AccountEquity(), 2) + ",";
json += "\"free_margin\":" + DoubleToString(AccountFreeMargin(), 2) + ",";
json += "\"leverage\":" + IntegerToString(AccountLeverage()) + ",";
json += "\"margin\":" + DoubleToString(AccountMargin(), 2) + ",";
json += "\"name\":\"" + EscapeString(AccountName()) + "\",";
json += "\"number\":" + IntegerToString(AccountNumber()) + ",";
json += "\"profit\":" + DoubleToString(AccountProfit(), 2) + ",";
json += "\"server\":\"" + EscapeString(AccountServer()) + "\"";
json += "}";
return(json);
}
//+------------------------------------------------------------------+
//| Function to collect positions and orders info as JSON array |
//+------------------------------------------------------------------+
string GetPositionsInfoJSONArray()
{
string json = "[";
bool first = true;
// Loop through all existing orders
int total = OrdersTotal();
for(int i = 0; i < total; i++)
{
if(OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
{
if(!first) json += ",";
int digits = (int)MarketInfo(OrderSymbol(), MODE_DIGITS);
// Prepare the OpenTime in timestamp format
datetime opentime = OrderOpenTime();
string opentime_str = TimeToStr(opentime, TIME_DATE|TIME_SECONDS);
json += "{";
json += "\"account_number\":" + IntegerToString(AccountNumber()) + ",";
json += "\"ticket\":" + IntegerToString(OrderTicket()) + ",";
json += "\"symbol\":\"" + OrderSymbol() + "\",";
json += "\"type\":\"" + OrderTypeToString(OrderType()) + "\",";
json += "\"lots\":" + DoubleToString(OrderLots(), 2) + ",";
json += "\"open_price\":" + DoubleToString(OrderOpenPrice(), digits) + ",";
json += "\"open_time\":\"" + opentime_str + "\",";
json += "\"stop_loss\":" + DoubleToString(OrderStopLoss(), digits) + ",";
json += "\"take_profit\":" + DoubleToString(OrderTakeProfit(), digits) + ",";
json += "\"commission\":" + DoubleToString(OrderCommission(), 2) + ",";
json += "\"swap\":" + DoubleToString(OrderSwap(), 2) + ",";
json += "\"comment\":\"" + EscapeString(OrderComment()) + "\",";
json += "\"profit\":" + DoubleToString(OrderProfit(), 2);
json += "}";
first = false;
}
}
json += "]";
return(json);
}
//+------------------------------------------------------------------+
//| Function to send JSON data to Supabase via WebRequest |
//+------------------------------------------------------------------+
int SendJSONToSupabase(string json_data, string url)
{
char post_data[];
// Convert the JSON string to a character array without null terminator and with UTF-8 encoding
int data_size = StringToCharArray(json_data, post_data, 0, StringLen(json_data), CP_UTF8);
string cookie = NULL;
string referer = NULL;
char response[];
string result_headers;
ResetLastError();
// Print the JSON data for debugging
Print("Sending JSON Data: ", json_data);
int res = WebRequest("POST", url, cookie, referer, 10000, post_data, data_size, response, result_headers);
int status_code = -1;
if (res == -1)
{
Print("WebRequest failed. Error code: ", GetLastError());
ResetLastError();
return (-1);
}
else
{
// Convert response to string with UTF-8 encoding
string response_body = CharArrayToString(response, 0, ArraySize(response), CP_UTF8);
// Print response body for debugging
Print("Response Body: ", response_body);
// Parse the HTTP status code from 'result_headers'
string headers_lower = result_headers;
StringToLower(headers_lower);
status_code = ParseStatusCode(headers_lower);
return (status_code);
}
}
//+------------------------------------------------------------------+
//| Function to parse HTTP status code from response headers |
//+------------------------------------------------------------------+
int ParseStatusCode(string headers_lower)
{
int status_code = -1;
int pos = StringFind(headers_lower, "http/");
if(pos != -1)
{
int space_pos = StringFind(headers_lower, " ", pos);
if(space_pos != -1)
{
int space_pos2 = StringFind(headers_lower, " ", space_pos + 1);
if(space_pos2 != -1)
{
string status_code_str = StringSubstr(headers_lower, space_pos + 1, space_pos2 - space_pos - 1);
status_code = (int)StrToInteger(status_code_str);
}
}
}
else
{
Print("Failed to parse HTTP status code from response headers.");
}
return(status_code);
}
//+------------------------------------------------------------------+
//| Function to convert order type to string (Buy, Sell, etc.) |
//+------------------------------------------------------------------+
string OrderTypeToString(int type)
{
switch(type)
{
case OP_BUY: return "Buy";
case OP_SELL: return "Sell";
case OP_BUYLIMIT: return "Buy Limit";
case OP_SELLLIMIT: return "Sell Limit";
case OP_BUYSTOP: return "Buy Stop";
case OP_SELLSTOP: return "Sell Stop";
default: return "Unknown";
}
}
//+------------------------------------------------------------------+
//| Function to escape special characters in strings for JSON |
//+------------------------------------------------------------------+
string EscapeString(string str)
{
string result = "";
int len = StringLen(str);
for(int i = 0; i < len; i++)
{
int ch = StringGetChar(str, i);
if(ch == '\'' || ch == '"')
result += "\\";
result += CharToString((char)ch);
}
return(result);
}
//+------------------------------------------------------------------+ASSISTANT
Sure, I'd be happy to help you modify your EA to send data via ZeroMQ and provide a Python script that receives the data and sends it to Supabase.
**Overview:**
Your current EA uses `WebRequest` to send data directly to Supabase, but due to limitations in MT4 regarding HTTP headers, you're looking to use ZeroMQ as an intermediary. The plan is to:
1. **Modify your EA to send data via ZeroMQ** instead of making HTTP requests directly.
2. **Write a Python script** that receives data from ZeroMQ and sends it to Supabase.
---
### **1. Modify Your EA to Use ZeroMQ**
#### **Step 1: Include the ZeroMQ Library**
At the top of your EA, include the ZeroMQ header:
```mql4
#include <Zmq\Zmq.mqh>
```
#### **Step 2: Declare Global Variables for Context and Socket**
Add the following global variables to manage the ZeroMQ context and socket:
```mql4
Context context;
Socket socket;
```
#### **Step 3: Initialize ZeroMQ in `OnInit`**
Modify your `OnInit` function to initialize the ZeroMQ context and socket:
```mql4
int OnInit()
{
Print("Initializing ZeroMQ context and socket.");
// Initialize ZeroMQ context and socket
context = new Context("EAContext");
socket = new Socket(context, ZMQ_PUSH);
// Connect to the ZeroMQ server (Python script)
// Replace the address with the one where your Python script will be listening
socket.connect("tcp://127.0.0.1:5555");
return(INIT_SUCCEEDED);
}
```
#### **Step 4: Close ZeroMQ in `OnDeinit`**
Ensure you properly close the socket and context when the EA is deinitialized:
```mql4
void OnDeinit(const int reason)
{
// Close the socket and context
socket.close();
context.close();
}
```
#### **Step 5: Modify `SendAccountData` to Use ZeroMQ**
Replace your `SendAccountData` function to send data via ZeroMQ:
```mql4
void SendAccountData()
{
// Collect account info
string account_data = GetAccountInfoJSON();
// Collect positions and orders info
string positions_data = GetPositionsInfoJSONArray(); // Returns JSON array of positions
// Combine the data into a single JSON object
string json_message = "{";
json_message += "\"account_info\":" + account_data + ",";
json_message += "\"positions_info\":" + positions_data;
json_message += "}";
// Send the combined JSON data via ZeroMQ
SendDataViaZeroMQ(json_message);
}
```
#### **Step 6: Implement `SendDataViaZeroMQ` Function**
Create a function to send data over ZeroMQ:
```mql4
void SendDataViaZeroMQ(string json_message)
{
// Create a ZmqMsg from the JSON string
ZmqMsg message(json_message);
// Send the message via ZeroMQ
socket.send(message);
Print("Data sent via ZeroMQ: ", json_message);
}
```
#### **Step 7: Remove Unnecessary WebRequest Functions**
Since you're no longer using `WebRequest`, you can remove the following functions from your EA:
- `SendJSONToSupabase`
- `ParseStatusCode`
- `UrlEncode`
- Any other functions related to HTTP requests
#### **Complete Modified EA Code**
Here's the fully modified EA code:
```mql4
//+------------------------------------------------------------------+
//| SendAccountInfoToZeroMQ |
//| Modified to use ZeroMQ |
//+------------------------------------------------------------------+
#property copyright "Developed"
#property version "1.01"
#property strict
#include <Zmq\Zmq.mqh>
// Input parameter for how often to send data (in seconds)
input int UpdateInterval = 60; // Update interval in seconds
// Global variables
datetime LastUpdateTime = 0;
Context context;
Socket socket;
//+------------------------------------------------------------------+
//| Expert initialization function |
//+------------------------------------------------------------------+
int OnInit()
{
Print("Initializing ZeroMQ context and socket.");
// Initialize ZeroMQ context and socket
context = new Context("EAContext");
socket = new Socket(context, ZMQ_PUSH);
// Connect to the ZeroMQ server (Python script)
// Replace with your server address
socket.connect("tcp://127.0.0.1:5555");
return(INIT_SUCCEEDED);
}
//+------------------------------------------------------------------+
//| Expert deinitialization function |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
{
// Close the socket and context
socket.close();
context.close();
}
//+------------------------------------------------------------------+
//| Expert tick function |
//+------------------------------------------------------------------+
void OnTick()
{
// Check if it's time to send data
if(TimeCurrent() - LastUpdateTime >= UpdateInterval)
{
// Collect data and send via ZeroMQ
SendAccountData();
LastUpdateTime = TimeCurrent();
}
}
//+------------------------------------------------------------------+
//| Function to send account data via ZeroMQ |
//+------------------------------------------------------------------+
void SendAccountData()
{
// Collect account info
string account_data = GetAccountInfoJSON();
// Collect positions and orders info
string positions_data = GetPositionsInfoJSONArray(); // Returns JSON array of positions
// Combine the data into a single JSON object
string json_message = "{";
json_message += "\"account_info\":" + account_data + ",";
json_message += "\"positions_info\":" + positions_data;
json_message += "}";
// Send the combined JSON data via ZeroMQ
SendDataViaZeroMQ(json_message);
}
//+------------------------------------------------------------------+
//| Function to send data via ZeroMQ |
//+------------------------------------------------------------------+
void SendDataViaZeroMQ(string json_message)
{
// Create a ZmqMsg from the JSON string
ZmqMsg message(json_message);
// Send the message via ZeroMQ
socket.send(message);
Print("Data sent via ZeroMQ: ", json_message);
}
//+------------------------------------------------------------------+
//| Function to collect account info and return as JSON string |
//+------------------------------------------------------------------+
string GetAccountInfoJSON()
{
string json = "{";
json += "\"balance\":" + DoubleToString(AccountBalance(), 2) + ",";
json += "\"credit\":" + DoubleToString(AccountCredit(), 2) + ",";
json += "\"company\":\"" + EscapeString(AccountCompany()) + "\",";
json += "\"currency\":\"" + EscapeString(AccountCurrency()) + "\",";
json += "\"equity\":" + DoubleToString(AccountEquity(), 2) + ",";
json += "\"free_margin\":" + DoubleToString(AccountFreeMargin(), 2) + ",";
json += "\"leverage\":" + IntegerToString(AccountLeverage()) + ",";
json += "\"margin\":" + DoubleToString(AccountMargin(), 2) + ",";
json += "\"name\":\"" + EscapeString(AccountName()) + "\",";
json += "\"number\":" + IntegerToString(AccountNumber()) + ",";
json += "\"profit\":" + DoubleToString(AccountProfit(), 2) + ",";
json += "\"server\":\"" + EscapeString(AccountServer()) + "\"";
json += "}";
return(json);
}
//+------------------------------------------------------------------+
//| Function to collect positions and orders info as JSON array |
//+------------------------------------------------------------------+
string GetPositionsInfoJSONArray()
{
string json = "[";
bool first = true;
// Loop through all existing orders
int total = OrdersTotal();
for(int i = 0; i < total; i++)
{
if(OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
{
if(!first) json += ",";
int digits = (int)MarketInfo(OrderSymbol(), MODE_DIGITS);
// Prepare the OpenTime in timestamp format
datetime opentime = OrderOpenTime();
string opentime_str = TimeToStr(opentime, TIME_DATE|TIME_SECONDS);
json += "{";
json += "\"account_number\":" + IntegerToString(AccountNumber()) + ",";
json += "\"ticket\":" + IntegerToString(OrderTicket()) + ",";
json += "\"symbol\":\"" + EscapeString(OrderSymbol()) + "\",";
json += "\"type\":\"" + EscapeString(OrderTypeToString(OrderType())) + "\",";
json += "\"lots\":" + DoubleToString(OrderLots(), 2) + ",";
json += "\"open_price\":" + DoubleToString(OrderOpenPrice(), digits) + ",";
json += "\"open_time\":\"" + EscapeString(opentime_str) + "\",";
json += "\"stop_loss\":" + DoubleToString(OrderStopLoss(), digits) + ",";
json += "\"take_profit\":" + DoubleToString(OrderTakeProfit(), digits) + ",";
json += "\"commission\":" + DoubleToString(OrderCommission(), 2) + ",";
json += "\"swap\":" + DoubleToString(OrderSwap(), 2) + ",";
json += "\"comment\":\"" + EscapeString(OrderComment()) + "\",";
json += "\"profit\":" + DoubleToString(OrderProfit(), 2);
json += "}";
first = false;
}
}
json += "]";
return(json);
}
//+------------------------------------------------------------------+
//| Function to escape special characters in strings for JSON |
//+------------------------------------------------------------------+
string EscapeString(string str)
{
string result = "";
int len = StringLen(str);
for(int i = 0; i < len; i++)
{
int ch = StringGetChar(str, i);
// Escape backslash and double quotes
if(ch == '\\' || ch == '"')
result += "\\";
result += CharToString((char)ch);
}
return(result);
}
//+------------------------------------------------------------------+
//| Function to convert order type to string (Buy, Sell, etc.) |
//+------------------------------------------------------------------+
string OrderTypeToString(int type)
{
switch(type)
{
case OP_BUY: return "Buy";
case OP_SELL: return "Sell";
case OP_BUYLIMIT: return "Buy Limit";
case OP_SELLLIMIT: return "Sell Limit";
case OP_BUYSTOP: return "Buy Stop";
case OP_SELLSTOP: return "Sell Stop";
default: return "Unknown";
}
}
//+------------------------------------------------------------------+
```
---
### **2. Write a Python Script to Receive Data and Send to Supabase**
#### **Step 1: Install Required Libraries**
First, ensure you have the necessary Python libraries installed:
```bash
pip install pyzmq requests
```
#### **Step 2: Write the Python Script**
Here's a Python script that:
- Initializes a ZeroMQ context and PULL socket.
- Listens for incoming messages from your EA.
- Parses the JSON data received.
- Sends the data to Supabase using HTTP requests.
```python
import zmq
import json
import requests
import time
# Supabase configuration
SUPABASE_URL = "https://setvyoukjbykdzhjzxum.supabase.co/rest/v1"
SUPABASE_API_KEY = "your_supabase_api_key" # Replace with your Supabase API Key
# ZeroMQ configuration
ZMQ_ADDRESS = "tcp://127.0.0.1:5555" # Must match the address in your EA
def main():
# Initialize ZeroMQ context and socket
context = zmq.Context()
socket = context.socket(zmq.PULL)
socket.bind(ZMQ_ADDRESS)
print("ZeroMQ server started, waiting for messages...")
while True:
# Receive a message
message = socket.recv_string()
print("Received data: {}".format(message))
# Parse the JSON data
try:
data = json.loads(message)
except json.JSONDecodeError as e:
print("Error decoding JSON: {}".format(e))
continue
# Extract account_info and positions_info
account_info = data.get("account_info")
positions_info = data.get("positions_info")
# Send data to Supabase
send_data_to_supabase(account_info, positions_info)
time.sleep(1)
def send_data_to_supabase(account_info, positions_info):
# Headers for Supabase
headers = {
"Content-Type": "application/json",
"apikey": SUPABASE_API_KEY,
"Authorization": f"Bearer {SUPABASE_API_KEY}"
}
# Send account_info
if account_info:
account_url = f"{SUPABASE_URL}/account_info"
response = requests.post(account_url, headers=headers, json=account_info)
if response.status_code in [200,201]:
print("Account data sent successfully to Supabase.")
else:
print(f"Failed to send account data to Supabase. HTTP status code: {response.status_code}")
print(f"Response text: {response.text}")
# Send positions_info
if positions_info:
positions_url = f"{SUPABASE_URL}/positions_info"
# positions_info is a list of positions
# We can send them in one request if Supabase accepts it
response = requests.post(positions_url, headers=headers, json=positions_info)
if response.status_code in [200,201]:
print("Positions data sent successfully to Supabase.")
else:
print(f"Failed to send positions data to Supabase. HTTP status code: {response.status_code}")
print(f"Response text: {response.text}")
if __name__ == "__main__":
main()
```
#### **Important Notes:**
- **Supabase Authentication:** Ensure you replace `your_supabase_api_key` with your actual Supabase API key.
- **Endpoints:** The script assumes you have two tables in Supabase: `account_info` and `positions_info`. Ensure these tables exist and the columns match the data you're sending.
- **Headers:** Supabase requires an `apikey` and `Authorization` header for authentication.
- **Bulk Insert:** The script attempts to send all positions in one POST request. If Supabase doesn't allow bulk inserts, you may need to modify the script to send each position individually.
#### **Step 3: Run the Python Script**
Run the script before starting your EA so that it can receive data:
```bash
python your_script_name.py
```
---
### **Conclusion**
By making these changes, your EA will now send data to a local ZeroMQ server (the Python script), which in turn forwards the data to Supabase. This setup overcomes the limitations in MT4's `WebRequest` functionality regarding headers.
**Remember:**
- Ensure that the address and port in both the EA and Python script match.
- Keep the Python script running to continuously receive data from the EA.
- Adjust the Supabase configuration in the Python script as needed.
If you encounter any issues or need further assistance, feel free to ask!