io.shardingsphere.core.constant.ShardingPropertiesConstant Maven / Gradle / Ivy
/*
* Copyright 2016-2018 shardingsphere.io.
*
* 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.shardingsphere.core.constant;
import lombok.Getter;
import lombok.RequiredArgsConstructor;
/**
* Sharding properties constant.
*
* @author gaohongtao
* @author caohao
*/
@RequiredArgsConstructor
@Getter
public enum ShardingPropertiesConstant {
/**
* Enable or Disable to show SQL details.
*
*
* Print SQL details can help developers debug easier.
* The details includes: logic SQL, parse context and rewrote actual SQL list.
* Enable this property will log into log topic: {@code Sharding-Sphere-SQL}, log level is {@code INFO}.
* Default: false
*
*/
SQL_SHOW("sql.show", Boolean.FALSE.toString(), boolean.class),
/**
* Worker group or user group thread max size.
*
*
* Worker group accept tcp connection.
* User group accept MySQL command.
* Default: CPU cores * 2.
*
*/
ACCEPTOR_SIZE("acceptor.size", String.valueOf(Runtime.getRuntime().availableProcessors() * 2), int.class),
/**
* Worker thread max size.
*
*
* Execute SQL Statement and PrepareStatement will use this thread pool.
* One sharding data source will use a independent thread pool, it does not share thread pool even different data source in same JVM.
* Default: infinite.
*
*/
EXECUTOR_SIZE("executor.size", String.valueOf(0), int.class),
/**
* Connection mode of connected to databases.
*
*
* MEMORY_STRICTLY:
* Sharding-Sphere holds as many connections as the count of actual tables routed in a database.
* The benefit of this approach is saving memory for Proxy by Stream ResultSet.
*
*
*
* CONNECTION_STRICTLY:
* harding-Sphere will release connections after get the overall rows from the ResultSet.
* Meanwhile, the cost of the memory will be increased.
*
*/
CONNECTION_MODE("connection.mode", ConnectionMode.MEMORY_STRICTLY.name(), String.class),
PROXY_TRANSACTION_MODE("proxy.transaction.mode", TransactionType.NONE.name(), String.class),
PROXY_BACKEND_USE_NIO("proxy.backend.use.nio", Boolean.FALSE.toString(), boolean.class),
PROXY_BACKEND_MAX_CONNECTIONS("proxy.backend.max.connections", 8 + "", int.class),
PROXY_BACKEND_CONNECTION_TIMEOUT_SECONDS("proxy.backend.connection.timeout.seconds", 60 + "", int.class);
private final String key;
private final String defaultValue;
private final Class type;
/**
* Find value via property key.
*
* @param key property key
* @return value enum, return {@code null} if not found
*/
public static ShardingPropertiesConstant findByKey(final String key) {
for (ShardingPropertiesConstant each : ShardingPropertiesConstant.values()) {
if (each.getKey().equals(key)) {
return each;
}
}
return null;
}
}