/* * 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<String, String> { 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<String> 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); } }