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32 changes: 32 additions & 0 deletions
32
...va/com/dangdang/ddframe/job/exception/JobShardingStrategyClassConfigurationException.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,32 @@ | ||
| /** | ||
| * 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> | ||
| */ | ||
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| package com.dangdang.ddframe.job.exception; | ||
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| /** | ||
| * 作业分片策略类配置错误抛出的异常. | ||
| * | ||
| * @author zhangliang | ||
| */ | ||
| public final class JobShardingStrategyClassConfigurationException extends JobException { | ||
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| private static final long serialVersionUID = -5017090222608389272L; | ||
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| public JobShardingStrategyClassConfigurationException(final Exception cause) { | ||
| super(cause); | ||
| } | ||
| } |
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35 changes: 35 additions & 0 deletions
35
.../java/com/dangdang/ddframe/job/internal/sharding/strategy/JobShardingStrategyFactory.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| package com.dangdang.ddframe.job.internal.sharding.strategy; | ||
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| import com.dangdang.ddframe.job.exception.JobShardingStrategyClassConfigurationException; | ||
| import com.google.common.base.Preconditions; | ||
| import com.google.common.base.Strings; | ||
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| /** | ||
| * 作业分片策略工厂. | ||
| * | ||
| * @author zhangliang | ||
| */ | ||
| public final class JobShardingStrategyFactory { | ||
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| private JobShardingStrategyFactory() { | ||
| } | ||
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| /** | ||
| * 获取 作业分片策略实例. | ||
| * | ||
| * @param jobShardingStrategyClassName 作业分片策略类名 | ||
| * @return 作业分片策略实例 | ||
| */ | ||
| public static JobShardingStrategy getStrategy(final String jobShardingStrategyClassName) { | ||
| if (Strings.isNullOrEmpty(jobShardingStrategyClassName)) { | ||
| return new AverageAllocationJobShardingStrategy(); | ||
| } | ||
| try { | ||
| Class<?> jobShardingStrategyClass = Class.forName(jobShardingStrategyClassName); | ||
| Preconditions.checkState(JobShardingStrategy.class.isAssignableFrom(jobShardingStrategyClass), String.format("Class [%s] is not job strategy class", jobShardingStrategyClassName)); | ||
| return (JobShardingStrategy) jobShardingStrategyClass.newInstance(); | ||
| } catch (final ClassNotFoundException | InstantiationException | IllegalAccessException ex) { | ||
| throw new JobShardingStrategyClassConfigurationException(ex); | ||
| } | ||
| } | ||
| } |
31 changes: 31 additions & 0 deletions
31
...n/java/com/dangdang/ddframe/job/internal/sharding/strategy/JobShardingStrategyOption.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| package com.dangdang.ddframe.job.internal.sharding.strategy; | ||
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| import java.util.Map; | ||
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| import lombok.Getter; | ||
| import lombok.RequiredArgsConstructor; | ||
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| /** | ||
| * 作业分片策略选项. | ||
| * | ||
| * @author zhangliang | ||
| */ | ||
| @Getter | ||
| @RequiredArgsConstructor | ||
| public final class JobShardingStrategyOption { | ||
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| /** | ||
| * 作业名称. | ||
| */ | ||
| private final String jobName; | ||
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| /** | ||
| * 作业分片总数. | ||
| */ | ||
| private final int shardingTotalCount; | ||
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| /** | ||
| * 分片序列号和个性化参数对照表. | ||
| */ | ||
| private final Map<Integer, String> shardingItemParameters; | ||
| } |
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