com.truelayer.java.http.interceptors.IdempotencyKeyGeneratorInterceptor Maven / Gradle / Ivy

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TrueLayer Java SDK for https://truelayer.com

There is a newer version: 16.0.0

package com.truelayer.java.http.interceptors;

import static org.apache.commons.lang3.ObjectUtils.isEmpty;

import com.truelayer.java.Constants;
import java.io.IOException;
import java.util.UUID;
import okhttp3.Interceptor;
import okhttp3.Request;
import okhttp3.Response;

public class IdempotencyKeyGeneratorInterceptor implements Interceptor {
    @Override
    public Response intercept(Chain chain) throws IOException {
        Request request = chain.request();

        if (!needsIdempotencyGeneration(request)) {
            return chain.proceed(request);
        }

        Request newRequest = request.newBuilder()
                .header(Constants.HeaderNames.IDEMPOTENCY_KEY, UUID.randomUUID().toString())
                .build();

        return chain.proceed(newRequest);
    }

    private boolean needsIdempotencyGeneration(Request request) {
        return isEmpty(request.header(Constants.HeaderNames.IDEMPOTENCY_KEY));
    }
}