org.springframework.analytics.retry.RedisRetryTemplate.java Source code

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Here is the source code for org.springframework.analytics.retry.RedisRetryTemplate.java

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/*
 * Copyright 2015 the original author or authors.
 *
 * 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 org.springframework.analytics.retry;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import org.springframework.data.redis.RedisSystemException;
import org.springframework.data.redis.core.RedisCallback;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.retry.RecoveryCallback;
import org.springframework.retry.RetryCallback;
import org.springframework.retry.RetryContext;
import org.springframework.retry.RetryOperations;

/**
 * Adds Retry functionality to RedisTemplate
 *
 * @author Mark Pollack
 */
public class RedisRetryTemplate<K, V> extends RedisTemplate<K, V> {

    private static final Log logger = LogFactory.getLog(RedisRetryTemplate.class);

    private volatile RetryOperations retryOperations;

    private volatile RecoveryCallback<?> recoveryCallback = new LoggingRecoveryCallback();

    public RetryOperations RetryOperations() {
        return retryOperations;
    }

    public void setRetryOperations(RetryOperations retryOperations) {
        this.retryOperations = retryOperations;
    }

    public RecoveryCallback<?> getRecoveryCallback() {
        return recoveryCallback;
    }

    public void setRecoveryCallback(RecoveryCallback<?> recoveryCallback) {
        this.recoveryCallback = recoveryCallback;
    }

    @Override
    @SuppressWarnings("unchecked")
    public <T> T execute(final RedisCallback<T> action, final boolean exposeConnection, final boolean pipeline) {
        if (this.retryOperations != null) {
            try {
                return this.retryOperations.execute(new RetryCallback<T, Exception>() {

                    @Override
                    public T doWithRetry(RetryContext context) throws Exception {
                        if (context.getRetryCount() > 0) {
                            logger.warn("Retry of Redis Operation. Retry Count = " + context.getRetryCount());
                        }
                        return RedisRetryTemplate.super.execute(action, exposeConnection, pipeline);
                    }

                }, (RecoveryCallback<T>) this.recoveryCallback);
            } catch (Exception e) {
                if (e instanceof RuntimeException) {
                    throw (RuntimeException) e;
                }
                throw new RedisSystemException("Unknown checked exception translated", e);
            }
        } else {
            return super.execute(action, exposeConnection, pipeline);
        }
    }
}