issue #491 allow the async client to deal with retries

unirest-bdd-tests/src/test/java/BehaviorTests/RetryAsyncTest.java

@@ -1,3 +1,28 @@
+/**
+ * The MIT License
+ *
+ * Copyright for portions of unirest-java are held by Kong Inc (c) 2013.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
 package BehaviorTests;
 
 import kong.unirest.core.*;

unirest/src/main/java/kong/unirest/core/BaseRequest.java

@@ -28,7 +28,10 @@
 import java.io.File;
 import java.nio.file.CopyOption;
 import java.time.Instant;
-import java.util.*;
+import java.util.Collection;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
 import java.util.function.Consumer;
 import java.util.function.Function;
@@ -355,7 +358,26 @@ private <T> CompletableFuture<HttpResponse<T>> requestAsync(HttpRequest request,
                                                            Function<RawResponse, HttpResponse<T>> transformer,
                                                            CompletableFuture<HttpResponse<T>> callback,
                                                            Class<?> resultType){
-        return config.getClient().request(request, transformer, callback, resultType);
+        var asyncR = config.getClient().request(request, transformer, callback, resultType);
+        if(config.isAutomaticRetryAfter()){
+            return asyncR.thenApplyAsync(response -> {
+                callCount++;
+                var retryAfter = config.getRetryStrategy();
+                if(retryAfter.isRetryable(response) && callCount < config.maxRetries()) {
+                    long waitTime = retryAfter.getWaitTime(response);
+                    if (waitTime > 0) {
+                        retryAfter.waitFor(waitTime);
+                        try {
+                            return requestAsync(this, transformer, callback, resultType).get();
+                        } catch (Exception e) {
+                            throw new UnirestException(e);
+                        }
+                    }
+                }
+                return response;
+            });
+        }
+        return asyncR;
     }