Remove recording retry/throttle as this is now handled in a more general way

extractor/src/test/java/org/schabi/newpipe/downloader/RecordingDownloader.java

@@ -15,7 +15,6 @@ import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
-import java.util.Random;
 
 import javax.annotation.Nonnull;
 
@@ -47,20 +46,6 @@ class RecordingDownloader extends Downloader {
     private int index = 0;
     private final String path;
 
-    // try to prevent ReCaptchaExceptions / rate limits by tracking and throttling the requests
-    /**
-     * The maximum number of requests per 20 seconds which are executed
-     * by the {@link RecordingDownloader}.
-     * 20 seconds is used as upper bound because the rate limit can be triggered within 30 seconds
-     * and hitting the rate limit should be prevented because it comes with a bigger delay.
-     * The values can be adjusted when executing the downloader and running into problems.
-     * <p>TODO: Allow adjusting the value by setting a param in the gradle command</p>
-     */
-    private static final int MAX_REQUESTS_PER_20_SECONDS = 30;
-    private static final long[] requestTimes = new long[MAX_REQUESTS_PER_20_SECONDS];
-    private static int requestTimesCursor = -1;
-    private static final Random throttleRandom = new Random();
-
     /**
      * Creates the folder described by {@code stringPath} if it does not exist.
      * Deletes existing files starting with {@link RecordingDownloader#FILE_NAME_PREFIX}.
@@ -84,71 +69,31 @@ class RecordingDownloader extends Downloader {
     @Override
     public Response execute(@Nonnull final Request request) throws IOException,
             ReCaptchaException {
-
-        // Delay the execution if the max number of requests per minute is reached
-        final long currentTime = System.currentTimeMillis();
-        // the cursor points to the latest request time and the next position is the oldest one
-        final int oldestRequestTimeCursor = (requestTimesCursor + 1) % requestTimes.length;
-        final long oldestRequestTime = requestTimes[oldestRequestTimeCursor];
-        if (oldestRequestTime + 20_000 >= currentTime) {
-            try {
-                // sleep at least until the oldest request is 20s old, but not more than 20s
-                final int minSleepTime = (int) (currentTime - oldestRequestTime);
-                Thread.sleep(minSleepTime + throttleRandom.nextInt(20_000 - minSleepTime));
-            } catch (InterruptedException e) {
-                // handle the exception gracefully because it's not critical for the test
-                System.err.println("Error while throttling the RecordingDownloader.");
-                e.printStackTrace();
-            }
-        }
-        requestTimesCursor = oldestRequestTimeCursor; // the oldest value needs to be overridden
-        requestTimes[requestTimesCursor] = System.currentTimeMillis();
-
-        // Handle ReCaptchaExceptions by retrying the request once after a while
-        try {
-            return executeRequest(request);
-        } catch (ReCaptchaException e) {
-            try {
-                // sleep for 35-60 seconds to circumvent the rate limit
-                System.out.println("Throttling the RecordingDownloader to handle a ReCaptcha."
-                        + " Sleeping for 35-60 seconds.");
-                Thread.sleep(35_000 + throttleRandom.nextInt(25_000));
-            } catch (InterruptedException ie) {
-                // handle the exception gracefully because it's not critical for the test
-                System.err.println("Error while throttling the RecordingDownloader.");
-                ie.printStackTrace();
-                e.printStackTrace();
-            }
-            return executeRequest(request);
-        }
-    }
-
-    @Nonnull
-    private Response executeRequest(@Nonnull final Request request) throws IOException,
-            ReCaptchaException {
         final Downloader downloader = DownloaderTestImpl.getInstance();
         Response response = downloader.execute(request);
-        String cleanedResponseBody = response.responseBody().replaceAll(IP_V4_PATTERN, "127.0.0.1");
         response = new Response(
-                response.responseCode(),
-                response.responseMessage(),
-                response.responseHeaders(),
-                cleanedResponseBody,
-                response.latestUrl()
+            response.responseCode(),
+            response.responseMessage(),
+            response.responseHeaders(),
+            response.responseBody().replaceAll(IP_V4_PATTERN, "127.0.0.1"),
+            response.latestUrl()
         );
 
-        final File outputFile = new File(path + File.separator + FILE_NAME_PREFIX + index
-                + ".json");
+        final File outputFile = new File(
+            path + File.separator + FILE_NAME_PREFIX + index + ".json");
         index++;
         outputFile.createNewFile();
-        final OutputStreamWriter writer = new OutputStreamWriter(new FileOutputStream(outputFile),
-                StandardCharsets.UTF_8);
-        new GsonBuilder()
+
+        try (final OutputStreamWriter writer = new OutputStreamWriter(
+            new FileOutputStream(outputFile), StandardCharsets.UTF_8)) {
+
+            new GsonBuilder()
                 .setPrettyPrinting()
                 .create()
                 .toJson(new TestRequestResponse(request, response), writer);
-        writer.flush();
-        writer.close();
+
+            writer.flush();
+        }
 
         return response;
     }