forked from santanusinha/dropwizard-db-sharding-bundle
/
DbBasedShardResolver.java
46 lines (40 loc) · 1.56 KB
/
DbBasedShardResolver.java
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/*
* Copyright 2018 Cleartax
*
* 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 in.cleartax.dropwizard.sharding.utils.resolvers.shard;
import in.cleartax.dropwizard.sharding.resolvers.shard.ShardResolver;
import in.cleartax.dropwizard.sharding.transactions.DefaultTenant;
import in.cleartax.dropwizard.sharding.transactions.ReuseSession;
import in.cleartax.dropwizard.sharding.utils.dao.BucketToShardMappingDAO;
import io.dropwizard.hibernate.UnitOfWork;
import lombok.RequiredArgsConstructor;
import javax.inject.Inject;
import java.util.Optional;
@RequiredArgsConstructor(onConstructor = @__(@Inject))
public class DbBasedShardResolver implements ShardResolver {
private final BucketToShardMappingDAO dao;
@Override
@UnitOfWork
@DefaultTenant
@ReuseSession
public String resolve(String bucketId) {
Optional<String> shardId = dao.getShardId(bucketId);
if (!shardId.isPresent()) {
throw new IllegalAccessError(String.format("%s bucket not mapped to any shard", bucketId));
}
return shardId.get();
}
}