com.rabbitmq.client.impl.recovery.TopologyRecoveryRetryHandlerBuilder Maven / Gradle / Ivy

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The RabbitMQ Java client library allows Java applications to interface with RabbitMQ.
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// Copyright (c) 2018-2020 VMware, Inc. or its affiliates.  All rights reserved.
//
// This software, the RabbitMQ Java client library, is triple-licensed under the
// Mozilla Public License 2.0 ("MPL"), the GNU General Public License version 2
// ("GPL") and the Apache License version 2 ("ASL"). For the MPL, please see
// LICENSE-MPL-RabbitMQ. For the GPL, please see LICENSE-GPL2.  For the ASL,
// please see LICENSE-APACHE2.
//
// This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND,
// either express or implied. See the LICENSE file for specific language governing
// rights and limitations of this software.
//
// If you have any questions regarding licensing, please contact us at
// [email protected].

package com.rabbitmq.client.impl.recovery;

import java.util.function.BiPredicate;

/**
 * Builder to ease creation of {@link DefaultRetryHandler} instances.
 * 
 * Just override what you need. By default, retry conditions don't trigger retry,
 * retry operations are no-op, the number of retry attempts is 2, and the backoff
 * policy doesn't wait at all.
 *
 * @see DefaultRetryHandler
 * @see TopologyRecoveryRetryLogic
 * @since 5.4.0
 */
public class TopologyRecoveryRetryHandlerBuilder {

    protected BiPredicate queueRecoveryRetryCondition = (q, e) -> false;
    protected BiPredicate exchangeRecoveryRetryCondition = (ex, e) -> false;
    protected BiPredicate bindingRecoveryRetryCondition = (b, e) -> false;
    protected BiPredicate consumerRecoveryRetryCondition = (c, e) -> false;

    protected DefaultRetryHandler.RetryOperation queueRecoveryRetryOperation = context -> null;
    protected DefaultRetryHandler.RetryOperation exchangeRecoveryRetryOperation = context -> null;
    protected DefaultRetryHandler.RetryOperation bindingRecoveryRetryOperation = context -> null;
    protected DefaultRetryHandler.RetryOperation consumerRecoveryRetryOperation = context -> null;

    protected int retryAttempts = 2;

    protected BackoffPolicy backoffPolicy = nbAttempts -> {
    };

    public static TopologyRecoveryRetryHandlerBuilder builder() {
        return new TopologyRecoveryRetryHandlerBuilder();
    }

    public TopologyRecoveryRetryHandlerBuilder queueRecoveryRetryCondition(
        BiPredicate queueRecoveryRetryCondition) {
        this.queueRecoveryRetryCondition = queueRecoveryRetryCondition;
        return this;
    }

    public TopologyRecoveryRetryHandlerBuilder exchangeRecoveryRetryCondition(
        BiPredicate exchangeRecoveryRetryCondition) {
        this.exchangeRecoveryRetryCondition = exchangeRecoveryRetryCondition;
        return this;
    }

    public TopologyRecoveryRetryHandlerBuilder bindingRecoveryRetryCondition(
        BiPredicate bindingRecoveryRetryCondition) {
        this.bindingRecoveryRetryCondition = bindingRecoveryRetryCondition;
        return this;
    }

    public TopologyRecoveryRetryHandlerBuilder consumerRecoveryRetryCondition(
        BiPredicate consumerRecoveryRetryCondition) {
        this.consumerRecoveryRetryCondition = consumerRecoveryRetryCondition;
        return this;
    }

    public TopologyRecoveryRetryHandlerBuilder queueRecoveryRetryOperation(DefaultRetryHandler.RetryOperation queueRecoveryRetryOperation) {
        this.queueRecoveryRetryOperation = queueRecoveryRetryOperation;
        return this;
    }

    public TopologyRecoveryRetryHandlerBuilder exchangeRecoveryRetryOperation(DefaultRetryHandler.RetryOperation exchangeRecoveryRetryOperation) {
        this.exchangeRecoveryRetryOperation = exchangeRecoveryRetryOperation;
        return this;
    }

    public TopologyRecoveryRetryHandlerBuilder bindingRecoveryRetryOperation(DefaultRetryHandler.RetryOperation bindingRecoveryRetryOperation) {
        this.bindingRecoveryRetryOperation = bindingRecoveryRetryOperation;
        return this;
    }

    public TopologyRecoveryRetryHandlerBuilder consumerRecoveryRetryOperation(DefaultRetryHandler.RetryOperation consumerRecoveryRetryOperation) {
        this.consumerRecoveryRetryOperation = consumerRecoveryRetryOperation;
        return this;
    }

    public TopologyRecoveryRetryHandlerBuilder backoffPolicy(BackoffPolicy backoffPolicy) {
        this.backoffPolicy = backoffPolicy;
        return this;
    }

    public TopologyRecoveryRetryHandlerBuilder retryAttempts(int retryAttempts) {
        this.retryAttempts = retryAttempts;
        return this;
    }

    public RetryHandler build() {
        return new DefaultRetryHandler(
            queueRecoveryRetryCondition, exchangeRecoveryRetryCondition,
            bindingRecoveryRetryCondition, consumerRecoveryRetryCondition,
            queueRecoveryRetryOperation, exchangeRecoveryRetryOperation,
            bindingRecoveryRetryOperation, consumerRecoveryRetryOperation,
            retryAttempts,
            backoffPolicy);
    }
}