com.couchbase.client.core.error.TimeoutException Maven / Gradle / Ivy
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/*
* Copyright (c) 2018 Couchbase, 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 com.couchbase.client.core.error;
import com.couchbase.client.core.annotation.Stability;
import com.couchbase.client.core.error.context.CancellationErrorContext;
import com.couchbase.client.core.retry.RetryReason;
import java.util.Collections;
import java.util.Set;
/**
* The {@link TimeoutException} signals that an operation timed out before it could be completed.
*
* It is important to understand that the timeout itself is always just the effect an underlying cause, never the
* issue itself. The root cause might not even be on the application side, also the network and server need to
* be taken into account.
*
* Right now the SDK can throw two different implementations of this class:
*
* - {@link AmbiguousTimeoutException}: The operation might have caused a side effect on the server and should not
* be retried without additional actions and checks.
* - {@link UnambiguousTimeoutException}: The operation has not caused a side effect on the server and is safe
* to retry. This is always the case for idempotent operations. For non-idempotent operations it depends on the state
* the operation was in at the time of cancellation.
*
*
* Usually it is helpful to inspect/log the full timeout exception, because it also logs the
* {@link CancellationErrorContext} which contains lots of additional metadata. The context can also be accessed
* through the {@link #context()} getter.
*/
public abstract class TimeoutException extends CouchbaseException {
protected TimeoutException(final String message, final CancellationErrorContext ctx) {
super(message, ctx);
}
@Override
@Stability.Uncommitted
public CancellationErrorContext context() {
return (CancellationErrorContext) super.context();
}
/**
* Returns the set of retry reasons for request.
*
* @return the set of retry reasons, might be empty.
*/
@Stability.Uncommitted
public Set retryReasons() {
final Set retryReasons = context().requestContext().retryReasons();
return retryReasons == null ? Collections.emptySet() : retryReasons;
}
/**
* Returns the number of retry attempts for this request.
*
* @return the number of retry attempts, might be 0.
*/
@Stability.Uncommitted
public int retryAttempts() {
return context().requestContext().retryAttempts();
}
}