--- /dev/null
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019 Nordix Foundation.
+ * ================================================================================
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.so.aaisimulator.service.providers;
+
+import java.util.Optional;
+import org.onap.aai.domain.yang.Customer;
+import org.onap.aai.domain.yang.Relationship;
+import org.onap.aai.domain.yang.ServiceInstance;
+import org.onap.aai.domain.yang.ServiceInstances;
+import org.onap.aai.domain.yang.ServiceSubscription;
+
+/**
+ * @author waqas.ikram@ericsson.com
+ *
+ */
+public interface CustomerCacheServiceProvider extends Clearable {
+
+ Optional<Customer> getCustomer(final String globalCustomerId);
+
+ void putCustomer(final String globalCustomerId, final Customer customer);
+
+ Optional<ServiceSubscription> getServiceSubscription(final String globalCustomerId, final String serviceType);
+
+ boolean putServiceSubscription(final String globalCustomerId, final String serviceType,
+ final ServiceSubscription serviceSubscription);
+
+ Optional<ServiceInstances> getServiceInstances(final String globalCustomerId, final String serviceType,
+ final String serviceInstanceName);
+
+ Optional<ServiceInstance> getServiceInstance(final String globalCustomerId, final String serviceType,
+ final String serviceInstanceId);
+
+ boolean putServiceInstance(final String globalCustomerId, final String serviceType, final String serviceInstanceId,
+ final ServiceInstance serviceInstance);
+
+ boolean patchServiceInstance(final String globalCustomerId, final String serviceType,
+ final String serviceInstanceId, final ServiceInstance serviceInstance);
+
+ Optional<Relationship> getRelationship(final String globalCustomerId, final String serviceType,
+ final String serviceInstanceId, final String vnfName);
+
+ Optional<Relationship> addRelationShip(final String globalCustomerId, final String serviceType,
+ final String serviceInstanceId, final Relationship relationship, final String requestUri);
+
+ boolean deleteSericeInstance(final String globalCustomerId, final String serviceType,
+ final String serviceInstanceId, final String resourceVersion);
+
+}