java 库中的 Static 字段

Question

I'm using java SDK library of one payment system.

In that library you have to set up API key which they provided to you before in the static field:

public static volatile String apiKey;

Each HTTP request which was made by this library involve this apiKey in headers.

My task - make aggregator of users of that payment system. Each user has his own API Key.

When the number of users was 2, I've just made bad thing:

public synchronized void pay() {
     Library.apiKey = securityService.currentUser().key();
     Library.pay(...)
     ...
}

It works but everyone understands that it is a bad bad bad practice. Now I have to support more than 100 users. My decision will be in 100 times slower not to mention another problems.

I want to continue to use this library. But in multithread way. Of course, if I make a request by myself I will do smth like this:

public void pay() {
     HttpHeader headers;
     headers.put("api_key", securityService.user().key());
     httpClient.post(headers...)
}

I understand that this library just doesn't fit to my task. But I need that library, it does a lot of work inside themself.

If there is no possibility I have to fork it and change to fit my demands.

I attach the link to source code of the library. https://github.com/stripe/stripe-java/tree/master/src/main/java/com/stripe

Answer 1

All of the request methods accept an optional RequestOptions object. In the RequestOptions you can add a secret API key to each method.

RequestOptions requestOptions = RequestOptions.builder()
    .setApiKey("sk_test_...")
    .build();