io.fabric8.kubernetes.client.informers.ExceptionHandler Maven / Gradle / Ivy
/*
* Copyright (C) 2015 Red Hat, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.fabric8.kubernetes.client.informers;
import com.fasterxml.jackson.core.JacksonException;
import io.fabric8.kubernetes.client.Watcher;
import io.fabric8.kubernetes.client.WatcherException;
public interface ExceptionHandler {
/**
* Called to determine if the informer should continue to retry after the given exception.
*
* See also {@link #isDeserializationException(Throwable)} that can help determine if the
* problem is a mismatch with the target client class.
*
* @param isStarted true if the informer had already successfully started
* @param t the non-http gone {@link WatcherException} from a
* {@link Watcher#onClose(io.fabric8.kubernetes.client.WatcherException)}
* or throwable from a list/watch call.
* @return true if the informer should continue to retry
*/
boolean retryAfterException(boolean isStarted, Throwable t);
/**
* Check to see if the exception of it's cause is coming from what is likely a
* deserialization issue - either an exception from jackson or a class cast
*
* @param t
* @return
*/
public static boolean isDeserializationException(Throwable t) {
while (!(t instanceof ClassCastException || t instanceof JacksonException)) {
Throwable cause = t.getCause();
if (cause == t || cause == null) {
return false;
}
t = cause;
}
return true;
}
}