spring-data-redis JedisClusterScriptingCommands 源码

spring-data-redis JedisClusterScriptingCommands 代码

文件路径：/src/main/java/org/springframework/data/redis/connection/jedis/JedisClusterScriptingCommands.java

/*
 * Copyright 2017-2022 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
 *
 *      https://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.data.redis.connection.jedis;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisCluster;

import java.util.List;

import org.springframework.dao.InvalidDataAccessApiUsageException;
import org.springframework.data.redis.connection.ClusterCommandExecutor;
import org.springframework.data.redis.connection.RedisScriptingCommands;
import org.springframework.data.redis.connection.ReturnType;
import org.springframework.util.Assert;

/**
 * @author Mark Paluch
 * @author Pavel Khokhlov
 * @since 2.0
 */
class JedisClusterScriptingCommands implements RedisScriptingCommands {

	private final JedisClusterConnection connection;

	JedisClusterScriptingCommands(JedisClusterConnection connection) {
		this.connection = connection;
	}

	@Override
	public void scriptFlush() {

		try {
			connection.getClusterCommandExecutor()
					.executeCommandOnAllNodes((JedisClusterConnection.JedisClusterCommandCallback<String>) Jedis::scriptFlush);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	@Override
	public void scriptKill() {

		try {
			connection.getClusterCommandExecutor()
					.executeCommandOnAllNodes((JedisClusterConnection.JedisClusterCommandCallback<String>) Jedis::scriptKill);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	@Override
	public String scriptLoad(byte[] script) {

		Assert.notNull(script, "Script must not be null");

		try {
			ClusterCommandExecutor.MultiNodeResult<byte[]> multiNodeResult = connection.getClusterCommandExecutor()
					.executeCommandOnAllNodes(
							(JedisClusterConnection.JedisClusterCommandCallback<byte[]>) client -> client.scriptLoad(script));

			return JedisConverters.toString(multiNodeResult.getFirstNonNullNotEmptyOrDefault(new byte[0]));
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	@Override
	public List<Boolean> scriptExists(String... scriptShas) {
		throw new InvalidDataAccessApiUsageException("ScriptExists is not supported in cluster environment");
	}

	@Override
	@SuppressWarnings("unchecked")
	public <T> T eval(byte[] script, ReturnType returnType, int numKeys, byte[]... keysAndArgs) {

		Assert.notNull(script, "Script must not be null");

		try {
			return (T) new JedisScriptReturnConverter(returnType).convert(getCluster().eval(script, numKeys, keysAndArgs));
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	@Override
	public <T> T evalSha(String scriptSha, ReturnType returnType, int numKeys, byte[]... keysAndArgs) {
		return evalSha(JedisConverters.toBytes(scriptSha), returnType, numKeys, keysAndArgs);
	}

	@Override
	@SuppressWarnings("unchecked")
	public <T> T evalSha(byte[] scriptSha, ReturnType returnType, int numKeys, byte[]... keysAndArgs) {

		Assert.notNull(scriptSha, "Script digest must not be null");

		try {
			return (T) new JedisScriptReturnConverter(returnType)
					.convert(getCluster().evalsha(scriptSha, numKeys, keysAndArgs));
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	protected RuntimeException convertJedisAccessException(Exception ex) {
		return connection.convertJedisAccessException(ex);
	}

	private JedisCluster getCluster() {
		return connection.getCluster();
	}
}

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