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Merge pull request #3294 from mauriciocolli/fix-network-issues-detection

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Fix detection of network related exceptions
This commit is contained in:
Tobias Groza 2020-04-10 23:10:34 +02:00 • committed by GitHub
commit 9cb6816b3c
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9 changed files with 170 additions and 106 deletions
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82
app/src/main/java/org/schabi/newpipe/util/ExceptionUtils.kt Normal file
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@ -0,0 +1,82 @@
package org.schabi.newpipe.util
import java.io.IOException
import java.io.InterruptedIOException
class ExceptionUtils {
companion object {
/**
* @return if throwable is related to Interrupted exceptions, or one of its causes is.
*/
@JvmStatic
fun isInterruptedCaused(throwable: Throwable): Boolean {
return hasExactCause(throwable,
InterruptedIOException::class.java,
InterruptedException::class.java)
}
/**
* @return if throwable is related to network issues, or one of its causes is.
*/
@JvmStatic
fun isNetworkRelated(throwable: Throwable): Boolean {
return hasAssignableCause(throwable,
IOException::class.java)
}
/**
* Calls [hasCause] with the `checkSubtypes` parameter set to false.
*/
@JvmStatic
fun hasExactCause(throwable: Throwable, vararg causesToCheck: Class<*>): Boolean {
return hasCause(throwable, false, *causesToCheck)
}
/**
* Calls [hasCause] with the `checkSubtypes` parameter set to true.
*/
@JvmStatic
fun hasAssignableCause(throwable: Throwable?, vararg causesToCheck: Class<*>): Boolean {
return hasCause(throwable, true, *causesToCheck)
}
/**
* Check if throwable has some cause from the causes to check, or is itself in it.
*
* If `checkIfAssignable` is true, not only the exact type will be considered equals, but also its subtypes.
*
* @param throwable throwable that will be checked.
* @param checkSubtypes if subtypes are also checked.
* @param causesToCheck an array of causes to check.
*
* @see Class.isAssignableFrom
*/
@JvmStatic
tailrec fun hasCause(throwable: Throwable?, checkSubtypes: Boolean, vararg causesToCheck: Class<*>): Boolean {
if (throwable == null) {
return false
}
// Check if throwable is a subtype of any of the causes to check
causesToCheck.forEach { causeClass ->
if (checkSubtypes) {
if (causeClass.isAssignableFrom(throwable.javaClass)) {
return true
}
} else {
if (causeClass == throwable.javaClass) {
return true
}
}
}
val currentCause: Throwable? = throwable.cause
// Check if cause is not pointing to the same instance, to avoid infinite loops.
if (throwable !== currentCause) {
return hasCause(currentCause, checkSubtypes, *causesToCheck)
}
return false
}
}
}

85
app/src/main/java/org/schabi/newpipe/util/ExtractorHelper.java
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@ -52,8 +52,6 @@ import org.schabi.newpipe.extractor.suggestion.SuggestionExtractor;
import org.schabi.newpipe.report.ErrorActivity;
import org.schabi.newpipe.report.UserAction;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.util.Collections;
import java.util.List;
@ -290,7 +288,7 @@ public final class ExtractorHelper {
Intent intent = new Intent(context, ReCaptchaActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
} else if (exception instanceof IOException) {
} else if (ExceptionUtils.isNetworkRelated(exception)) {
Toast.makeText(context, R.string.network_error, Toast.LENGTH_LONG).show();
} else if (exception instanceof ContentNotAvailableException) {
Toast.makeText(context, R.string.content_not_available, Toast.LENGTH_LONG).show();
@ -309,85 +307,4 @@ public final class ExtractorHelper {
}
});
}
/**
* Check if throwable have the cause that can be assignable from the causes to check.
*
* @see Class#isAssignableFrom(Class)
* @param throwable the throwable to be checked
* @param causesToCheck the causes to check
* @return whether the exception is an instance of a subclass of one of the causes
* or is caused by an instance of a subclass of one of the causes
*/
public static boolean hasAssignableCauseThrowable(final Throwable throwable,
final Class<?>... causesToCheck) {
// Check if getCause is not the same as cause (the getCause is already the root),
// as it will cause a infinite loop if it is
Throwable cause;
Throwable getCause = throwable;
// Check if throwable is a subclass of any of the filtered classes
final Class throwableClass = throwable.getClass();
for (Class<?> causesEl : causesToCheck) {
if (causesEl.isAssignableFrom(throwableClass)) {
return true;
}
}
// Iteratively checks if the root cause of the throwable is a subclass of the filtered class
while ((cause = throwable.getCause()) != null && getCause != cause) {
getCause = cause;
final Class causeClass = cause.getClass();
for (Class<?> causesEl : causesToCheck) {
if (causesEl.isAssignableFrom(causeClass)) {
return true;
}
}
}
return false;
}
/**
* Check if throwable have the exact cause from one of the causes to check.
*
* @param throwable the throwable to be checked
* @param causesToCheck the causes to check
* @return whether the exception is an instance of one of the causes
* or is caused by an instance of one of the causes
*/
public static boolean hasExactCauseThrowable(final Throwable throwable,
final Class<?>... causesToCheck) {
// Check if getCause is not the same as cause (the getCause is already the root),
// as it will cause a infinite loop if it is
Throwable cause;
Throwable getCause = throwable;
for (Class<?> causesEl : causesToCheck) {
if (throwable.getClass().equals(causesEl)) {
return true;
}
}
while ((cause = throwable.getCause()) != null && getCause != cause) {
getCause = cause;
for (Class<?> causesEl : causesToCheck) {
if (cause.getClass().equals(causesEl)) {
return true;
}
}
}
return false;
}
/**
* Check if throwable have Interrupted* exception as one of its causes.
*
* @param throwable the throwable to be checkes
* @return whether the throwable is caused by an interruption
*/
public static boolean isInterruptedCaused(final Throwable throwable) {
return ExtractorHelper.hasExactCauseThrowable(throwable,
InterruptedIOException.class,
InterruptedException.class);
}
}