org.killbill.billing.util.cache.TenantKVCacheLoader Maven / Gradle / Ivy
/*
* Copyright 2014-2017 Groupon, Inc
* Copyright 2014-2017 The Billing Project, LLC
*
* The Billing Project licenses this file to you 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 org.killbill.billing.util.cache;
import java.util.List;
import javax.inject.Inject;
import javax.inject.Singleton;
import org.killbill.billing.callcontext.InternalTenantContext;
import org.killbill.billing.tenant.api.TenantInternalApi;
import org.killbill.billing.util.cache.Cachable.CacheType;
@Singleton
public class TenantKVCacheLoader extends BaseCacheLoader {
private final TenantInternalApi tenantApi;
@Inject
public TenantKVCacheLoader(final TenantInternalApi tenantApi) {
super();
this.tenantApi = tenantApi;
}
@Override
public CacheType getCacheType() {
return CacheType.TENANT_KV;
}
@Override
public String compute(final String key, final CacheLoaderArgument cacheLoaderArgument) {
final String[] parts = key.split(CacheControllerDispatcher.CACHE_KEY_SEPARATOR);
final String rawKey = parts[0];
final String tenantRecordId = parts[1];
final InternalTenantContext internalTenantContext = new InternalTenantContext(Long.valueOf(tenantRecordId));
final List valuesForKey = tenantApi.getTenantValuesForKey(rawKey, internalTenantContext);
if (valuesForKey == null || valuesForKey.isEmpty()) {
return EMPTY_VALUE_PLACEHOLDER;
}
if (valuesForKey.size() > 1) {
throw new IllegalStateException("TenantKVCacheLoader expecting no more than one value for key " + key);
}
return valuesForKey.get(0);
}
}