Ticker.cpp

C++ Ticker Task

You need to write a symbol ticker class that should have these properties:

• There should be default constructor, parameterized constructor(s), copy constructor and move constructor.
• Number of active objects of this class should be held and be accessible in some way
• Two main parameters will be given: symbol and period (millisecond).
• Default value for symbol parameter is empty string. Default value for period is 0.
• Objects need to fetch data from binance futures book ticker endpoint periodically while symbol is not empty string and period is greater than 0.
• To fetch data, you should send get requests to this REST endpoint: https://fapi.binance.com/fapi/v1/ticker/bookTicker?symbol=<symbol>

For example to get "BTCUSDT" ticker data you need to send get request to: https://fapi.binance.com/fapi/v1/ticker/bookTicker?symbol=BTCUSDT

Example response data: {"symbol":"BTCUSDT","bidPrice":"59426.80","bidQty":"6.321","askPrice":"59426.90","askQty":"4.428","time":1709124008356,"lastUpdateId":4057737908956}

• bidPrice, bidQty, askPrice, askQty fields should be saved. These are the data that we want to access.
• Unless one period of time passes, a new get request should not be sent.
• Data getter method/mechanism should perform destructive-read. In other words, data will be erased after a read action.
• Global left-shift operator should be usable with std::cout and objects of the class (look below).
• Periodic rest requests should be performed in a seperate thread.
• Read and write operations must be thread-safe for saved data.

Class names below were given as an example. You can use your own naming.

Price and quantity values below were also given as an example. These need to be fetched from endpoint.

Handling edge cases and following best practices are up to you.

Example:

int main(void) {
MyClass test("ETHUSDT", 500);
sleep(1);
std::cout << test << std::endl;
std::cout << test << std::endl;
sleep(1);
std::cout << test << std::endl;
return 0;
}

Output:

ETHUSDT
bid price: 3472.71
ask price: 3472.72
bid qty: 3472.71
ask qty: 0.060
ETHUSDT
bid price: 0
ask price: 0
bid qty: 0
ask qty: 0
ETHUSDT
bid price: 3472.66
ask price: 3472.67
bid qty: 59.281
ask qty: 18.766

Example:

int main(void) {
MyClass test("ETHUSDT", 500);
sleep(1);
MyClass test2 = test;
std::cout << test2 << std::endl;
std::cout << test << std::endl;
test2.set_symbol("AVAXUSDT");
sleep(1);
std::cout << test2 << std::endl;
std::cout << test << std::endl;
std::cout << test2.get_obj_count() << std::endl;
return 0;
}

Output:

ETHUSDT
bid price: 0
ask price: 0
bid qty: 0
ask qty: 0
ETHUSDT
bid price: 3472.66
ask price: 3472.67
bid qty: 59.281
ask qty: 18.766
AVAXUSDT
bid price: 43.1240
ask price: 43.1260
bid qty: 23
ask qty: 9
ETHUSDT
bid price: 3472.71
ask price: 3472.72
bid qty: 3472.71
ask qty: 0.060
2

Have a nice coding.

Usage

1. Compile the Ticker.cpp file using a C++ compiler. $make Ticker

2. Run the compiled executable. $./Ticker