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54 changes: 54 additions & 0 deletions
54
...c-core/src/main/java/com/dangdang/ddframe/rdb/sharding/api/ShardingDataSourceFactory.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,54 @@ | ||
| /* | ||
| * Copyright 1999-2015 dangdang.com. | ||
| * <p> | ||
| * 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. | ||
| * </p> | ||
| */ | ||
|
|
||
| package com.dangdang.ddframe.rdb.sharding.api; | ||
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|
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| import com.dangdang.ddframe.rdb.sharding.api.rule.ShardingRule; | ||
| import com.dangdang.ddframe.rdb.sharding.jdbc.ShardingDataSource; | ||
| import lombok.AccessLevel; | ||
| import lombok.NoArgsConstructor; | ||
|
|
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| import javax.sql.DataSource; | ||
| import java.util.Properties; | ||
|
|
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| /** | ||
| * 分片数据源工厂. | ||
| */ | ||
| @NoArgsConstructor(access = AccessLevel.PRIVATE) | ||
| public final class ShardingDataSourceFactory { | ||
|
|
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| /** | ||
| * 创建分片数据源. | ||
| * | ||
| * @param shardingRule 分片规则 | ||
| * @return 分片数据源 | ||
| */ | ||
| public static DataSource createDataSource(final ShardingRule shardingRule) { | ||
| return new ShardingDataSource(shardingRule); | ||
| } | ||
|
|
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| /** | ||
| * 创建分片数据源. | ||
| * | ||
| * @param shardingRule 分片规则 | ||
| * @param props 属性配置 | ||
| * @return 分片数据源 | ||
| */ | ||
| public static DataSource createDataSource(final ShardingRule shardingRule, final Properties props) { | ||
| return new ShardingDataSource(shardingRule, props); | ||
| } | ||
| } |
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89 changes: 89 additions & 0 deletions
89
...ng-jdbc-core/src/main/java/com/dangdang/ddframe/rdb/sharding/jdbc/ShardingDataSource.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| /* | ||
| * Copyright 1999-2015 dangdang.com. | ||
| * <p> | ||
| * 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. | ||
| * </p> | ||
| */ | ||
|
|
||
| package com.dangdang.ddframe.rdb.sharding.jdbc; | ||
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|
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| import com.dangdang.ddframe.rdb.sharding.config.ShardingProperties; | ||
| import com.dangdang.ddframe.rdb.sharding.api.rule.ShardingRule; | ||
| import com.dangdang.ddframe.rdb.sharding.constants.DatabaseType; | ||
| import com.dangdang.ddframe.rdb.sharding.exception.ShardingJdbcException; | ||
| import com.dangdang.ddframe.rdb.sharding.executor.ExecutorEngine; | ||
| import com.dangdang.ddframe.rdb.sharding.jdbc.adapter.AbstractDataSourceAdapter; | ||
| import com.dangdang.ddframe.rdb.sharding.metrics.MetricsContext; | ||
| import com.dangdang.ddframe.rdb.sharding.router.SQLRouteEngine; | ||
| import com.google.common.base.Preconditions; | ||
|
|
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| import javax.sql.DataSource; | ||
| import java.sql.Connection; | ||
| import java.sql.SQLException; | ||
| import java.util.ArrayList; | ||
| import java.util.Collection; | ||
| import java.util.Properties; | ||
|
|
||
| /** | ||
| * 支持分片的数据源. | ||
| * | ||
| * @author zhangliang | ||
| */ | ||
| public class ShardingDataSource extends AbstractDataSourceAdapter { | ||
|
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| private final ShardingProperties shardingProperties; | ||
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| private final ShardingContext shardingContext; | ||
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| public ShardingDataSource(final ShardingRule shardingRule) { | ||
| this(shardingRule, new Properties()); | ||
| } | ||
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| public ShardingDataSource(final ShardingRule shardingRule, final Properties props) { | ||
| Preconditions.checkNotNull(shardingRule); | ||
| Preconditions.checkNotNull(props); | ||
| shardingProperties = new ShardingProperties(props); | ||
| try { | ||
| shardingContext = new ShardingContext(shardingRule, new SQLRouteEngine(shardingRule, DatabaseType.valueFrom(getDatabaseProductName(shardingRule))), new ExecutorEngine(shardingProperties)); | ||
| } catch (final SQLException ex) { | ||
| throw new ShardingJdbcException(ex); | ||
| } | ||
| } | ||
|
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| private String getDatabaseProductName(final ShardingRule shardingRule) throws SQLException { | ||
| String result = null; | ||
| Collection<Connection> connections = new ArrayList<>(shardingRule.getDataSourceRule().getDataSources().size()); | ||
| for (DataSource each : shardingRule.getDataSourceRule().getDataSources()) { | ||
| Connection connection = each.getConnection(); | ||
| connections.add(connection); | ||
| String databaseProductName = connection.getMetaData().getDatabaseProductName(); | ||
| Preconditions.checkState(null == result || result.equals(databaseProductName), String.format("Database type inconsistent with '%s' and '%s'", result, databaseProductName)); | ||
| result = databaseProductName; | ||
| } | ||
| for (Connection each : connections) { | ||
| each.close(); | ||
| } | ||
| return result; | ||
| } | ||
|
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| @Override | ||
| public ShardingConnection getConnection() throws SQLException { | ||
| MetricsContext.init(shardingProperties); | ||
| return new ShardingConnection(shardingContext); | ||
| } | ||
|
|
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| @Override | ||
| public final ShardingConnection getConnection(final String username, final String password) throws SQLException { | ||
| return getConnection(); | ||
| } | ||
| } |
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