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fix(YouTube - ReturnYouTubeDislike): Use API back off if client connection fails for any reason (#509)

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LisoUseInAIKyrios 2023-10-25 12:53:44 +03:00 committed by GitHub
parent 0fbf7a3434
commit 40cfa1e9af
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2 changed files with 38 additions and 48 deletions
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2
app/src/main/java/app/revanced/integrations/returnyoutubedislike/ReturnYouTubeDislike.java
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@ -80,7 +80,7 @@ public class ReturnYouTubeDislike {
* How long to retain unsuccessful RYD fetches,
* and also the minimum time before retrying again.
*/
private static final long CACHE_TIMEOUT_FAILURE_MILLISECONDS = 2 * 60 * 1000; // 2 Minutes
private static final long CACHE_TIMEOUT_FAILURE_MILLISECONDS = 3 * 60 * 1000; // 3 Minutes
/**
* Unique placeholder character, used to detect if a segmented span already has dislikes added to it.

84
app/src/main/java/app/revanced/integrations/returnyoutubedislike/requests/ReturnYouTubeDislikeApi.java
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@ -32,13 +32,13 @@ public class ReturnYouTubeDislikeApi {
/**
* {@link #fetchVotes(String)} TCP connection timeout
*/
private static final int API_GET_VOTES_TCP_TIMEOUT_MILLISECONDS = 2000;
private static final int API_GET_VOTES_TCP_TIMEOUT_MILLISECONDS = 2 * 1000; // 2 Seconds.
/**
* {@link #fetchVotes(String)} HTTP read timeout.
* To locally debug and force timeouts, change this to a very small number (ie: 100)
*/
private static final int API_GET_VOTES_HTTP_TIMEOUT_MILLISECONDS = 5000;
private static final int API_GET_VOTES_HTTP_TIMEOUT_MILLISECONDS = 5 * 1000; // 5 Seconds.
/**
* Default connection and response timeout for voting and registration.
@ -46,7 +46,7 @@ public class ReturnYouTubeDislikeApi {
* Voting and user registration runs in the background and has has no urgency
* so this can be a larger value.
*/
private static final int API_REGISTER_VOTE_TIMEOUT_MILLISECONDS = 90000;
private static final int API_REGISTER_VOTE_TIMEOUT_MILLISECONDS = 60 * 1000; // 60 Seconds.
/**
* Response code of a successful API call
@ -54,31 +54,30 @@ public class ReturnYouTubeDislikeApi {
private static final int HTTP_STATUS_CODE_SUCCESS = 200;
/**
* Response code indicating the video id is not for a video that can be voted for.
* (it's not a Short or a regular video, and it's likely a YouTube Story)
* Indicates a client rate limit has been reached and the client must back off.
*/
private static final int HTTP_STATUS_CODE_NOT_FOUND = 404;
private static final int HTTP_STATUS_CODE_RATE_LIMIT = 429;
/**
* Indicates a client rate limit has been reached
* How long to wait until API calls are resumed, if the API requested a back off.
* No clear guideline of how long to wait until resuming.
*/
private static final int RATE_LIMIT_HTTP_STATUS_CODE = 429;
private static final int BACKOFF_RATE_LIMIT_MILLISECONDS = 4 * 60 * 1000; // 4 Minutes.
/**
* How long to wait until API calls are resumed, if a rate limit is hit.
* No clear guideline of how long to backoff. Using 2 minutes for now.
* How long to wait until API calls are resumed, if any connection error occurs.
*/
private static final int RATE_LIMIT_BACKOFF_SECONDS = 120;
private static final int BACKOFF_CONNECTION_ERROR_MILLISECONDS = 60 * 1000; // 60 Seconds.
/**
* Last time a {@link #RATE_LIMIT_HTTP_STATUS_CODE} was reached.
* zero if has not been reached.
* If non zero, then the system time of when API calls can resume.
*/
private static volatile long lastTimeRateLimitWasHit; // must be volatile, since different threads read/write to this
private static volatile long timeToResumeAPICalls; // must be volatile, since different threads read/write to this
/**
* Number of times {@link #RATE_LIMIT_HTTP_STATUS_CODE} was requested by RYD api.
* Does not include network calls attempted while rate limit is in effect
* Number of times {@link #HTTP_STATUS_CODE_RATE_LIMIT} was requested by RYD api.
* Does not include network calls attempted while rate limit is in effect,
* and does not include rate limit imposed if a fetch fails.
*/
private static volatile int numberOfRateLimitRequestsEncountered;
@ -165,16 +164,16 @@ public class ReturnYouTubeDislikeApi {
* @return True, if api rate limit is in effect.
*/
private static boolean checkIfRateLimitInEffect(String apiEndPointName) {
if (lastTimeRateLimitWasHit == 0) {
if (timeToResumeAPICalls == 0) {
return false;
}
final long numberOfSecondsSinceLastRateLimit = (System.currentTimeMillis() - lastTimeRateLimitWasHit) / 1000;
if (numberOfSecondsSinceLastRateLimit < RATE_LIMIT_BACKOFF_SECONDS) {
LogHelper.printDebug(() -> "Ignoring api call " + apiEndPointName + " as only "
+ numberOfSecondsSinceLastRateLimit + " seconds has passed since last rate limit.");
return true;
final long now = System.currentTimeMillis();
if (now > timeToResumeAPICalls) {
timeToResumeAPICalls = 0;
return false;
}
return false;
LogHelper.printDebug(() -> "Ignoring api call " + apiEndPointName + " as rate limit is in effect");
return true;
}
/**
@ -186,37 +185,33 @@ public class ReturnYouTubeDislikeApi {
final double RANDOM_RATE_LIMIT_PERCENTAGE = 0.2; // 20% chance of a triggering a rate limit
if (Math.random() < RANDOM_RATE_LIMIT_PERCENTAGE) {
LogHelper.printDebug(() -> "Artificially triggering rate limit for debug purposes");
httpResponseCode = RATE_LIMIT_HTTP_STATUS_CODE;
httpResponseCode = HTTP_STATUS_CODE_RATE_LIMIT;
}
}
if (httpResponseCode == RATE_LIMIT_HTTP_STATUS_CODE) {
lastTimeRateLimitWasHit = System.currentTimeMillis();
//noinspection NonAtomicOperationOnVolatileField // don't care, field is used only as an estimate
numberOfRateLimitRequestsEncountered++;
LogHelper.printDebug(() -> "API rate limit was hit. Stopping API calls for the next "
+ RATE_LIMIT_BACKOFF_SECONDS + " seconds");
ReVancedUtils.showToastLong(str("revanced_ryd_failure_client_rate_limit_requested"));
return true;
}
return false;
return httpResponseCode == HTTP_STATUS_CODE_RATE_LIMIT;
}
@SuppressWarnings("NonAtomicOperationOnVolatileField") // do not want to pay performance cost of full synchronization for debug fields that are only estimates anyways
private static void updateStatistics(long timeNetworkCallStarted, long timeNetworkCallEnded, boolean connectionError, boolean rateLimitHit) {
@SuppressWarnings("NonAtomicOperationOnVolatileField") // Don't care, fields are estimates.
private static void updateRateLimitAndStats(long timeNetworkCallStarted, boolean connectionError, boolean rateLimitHit) {
if (connectionError && rateLimitHit) {
throw new IllegalArgumentException();
}
final long responseTimeOfFetchCall = timeNetworkCallEnded - timeNetworkCallStarted;
final long responseTimeOfFetchCall = System.currentTimeMillis() - timeNetworkCallStarted;
fetchCallResponseTimeTotal += responseTimeOfFetchCall;
fetchCallResponseTimeMin = (fetchCallResponseTimeMin == 0) ? responseTimeOfFetchCall : Math.min(responseTimeOfFetchCall, fetchCallResponseTimeMin);
fetchCallResponseTimeMax = Math.max(responseTimeOfFetchCall, fetchCallResponseTimeMax);
fetchCallCount++;
if (connectionError) {
timeToResumeAPICalls = System.currentTimeMillis() + BACKOFF_CONNECTION_ERROR_MILLISECONDS;
fetchCallResponseTimeLast = responseTimeOfFetchCall;
fetchCallNumberOfFailures++;
} else if (rateLimitHit) {
LogHelper.printDebug(() -> "API rate limit was hit. Stopping API calls for the next "
+ BACKOFF_RATE_LIMIT_MILLISECONDS + " seconds");
timeToResumeAPICalls = System.currentTimeMillis() + BACKOFF_RATE_LIMIT_MILLISECONDS;
numberOfRateLimitRequestsEncountered++;
fetchCallResponseTimeLast = FETCH_CALL_RESPONSE_TIME_VALUE_RATE_LIMIT;
ReVancedUtils.showToastLong(str("revanced_ryd_failure_client_rate_limit_requested"));
} else {
fetchCallResponseTimeLast = responseTimeOfFetchCall;
}
@ -262,27 +257,22 @@ public class ReturnYouTubeDislikeApi {
final int responseCode = connection.getResponseCode();
if (checkIfRateLimitWasHit(responseCode)) {
connection.disconnect(); // rate limit hit, should disconnect
updateStatistics(timeNetworkCallStarted, System.currentTimeMillis(),false, true);
updateRateLimitAndStats(timeNetworkCallStarted, false, true);
return null;
}
if (responseCode == HTTP_STATUS_CODE_SUCCESS) {
final long timeNetworkCallEnded = System.currentTimeMillis(); // record end time before parsing
// do not disconnect, the same server connection will likely be used again soon
JSONObject json = Requester.parseJSONObject(connection);
try {
RYDVoteData votingData = new RYDVoteData(json);
updateStatistics(timeNetworkCallStarted, timeNetworkCallEnded, false, false);
updateRateLimitAndStats(timeNetworkCallStarted, false, false);
LogHelper.printDebug(() -> "Voting data fetched: " + votingData);
return votingData;
} catch (JSONException ex) {
LogHelper.printException(() -> "Failed to parse video: " + videoId + " json: " + json, ex);
// fall thru to update statistics
}
} else if (responseCode == HTTP_STATUS_CODE_NOT_FOUND) {
// normal response when viewing YouTube Stories (cannot vote for these)
LogHelper.printDebug(() -> "Video has no like/dislikes (video is a YouTube Story?): " + videoId);
return null; // do not updated connection statistics
} else {
handleConnectionError(str("revanced_ryd_failure_connection_status_code", responseCode), null);
}
@ -296,7 +286,7 @@ public class ReturnYouTubeDislikeApi {
LogHelper.printException(() -> "Failed to fetch votes", ex, str("revanced_ryd_failure_generic", ex.getMessage()));
}
updateStatistics(timeNetworkCallStarted, System.currentTimeMillis(), true, false);
updateRateLimitAndStats(timeNetworkCallStarted, true, false);
return null;
}
@ -311,7 +301,7 @@ public class ReturnYouTubeDislikeApi {
return null;
}
String userId = randomString(36);
LogHelper.printDebug(() -> "Trying to register new user: " + userId);
LogHelper.printDebug(() -> "Trying to register new user");
HttpURLConnection connection = getRYDConnectionFromRoute(ReturnYouTubeDislikeRoutes.GET_REGISTRATION, userId);
connection.setRequestProperty("Accept", "application/json");