This PR adds the ability to track pending requests. A request is determined as pending when one of the assets is currently in process of being retrieved from the exchanges.
For example, the XRC receives a request X for ICP/BTC at timestamp 100. While the XRC starts processing request X, another request (Y) for BTC/USDT at timestamp 100 is received. The XRC canister adds the following symbol-timestamp pairs to the tracking set from request X:
("ICP", 100) and ("BTC", 100).
While waiting for request X's results, the XRC begins to process request Y. As request Y contains the symbol-timestamp pair ("BTC", 100), request Y is determined to be pending and the Pending error is returned to the user.
This PR adds the ability to track pending requests. A request is determined as
pendingwhen one of the assets is currently in process of being retrieved from the exchanges.For example, the XRC receives a request
XforICP/BTCat timestamp100. While the XRC starts processing requestX, another request (Y) forBTC/USDTat timestamp100is received. The XRC canister adds the following symbol-timestamp pairs to the tracking set from requestX:("ICP", 100)and("BTC", 100).While waiting for request
X's results, the XRC begins to process requestY. As requestYcontains the symbol-timestamp pair("BTC", 100), requestYis determined to bependingand thePendingerror is returned to the user.