| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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.apache.metamodel.membrane.app.registry.memory; |
| |
| import java.util.LinkedHashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.stream.Collectors; |
| |
| import org.apache.metamodel.membrane.app.exceptions.NoSuchTenantException; |
| import org.apache.metamodel.membrane.app.exceptions.TenantAlreadyExistException; |
| import org.apache.metamodel.membrane.app.registry.TenantContext; |
| import org.apache.metamodel.membrane.app.registry.TenantRegistry; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * In-memory {@link TenantRegistry}. This is not particularly |
| * production-friendly as it is non-persistent, but it is useful for demo |
| * purposes. |
| */ |
| public class InMemoryTenantRegistry implements TenantRegistry { |
| |
| private static final Logger logger = LoggerFactory.getLogger(InMemoryTenantRegistry.class); |
| private final Map<String, TenantContext> tenants; |
| |
| public InMemoryTenantRegistry() { |
| tenants = new LinkedHashMap<>(); |
| logger.info("Initialized!"); |
| } |
| |
| @Override |
| public List<String> getTenantIdentifiers() { |
| return tenants.keySet().stream().collect(Collectors.toList()); |
| } |
| |
| @Override |
| public TenantContext getTenantContext(String tenantIdentifier) { |
| final TenantContext tenant = tenants.get(tenantIdentifier); |
| if (tenant == null) { |
| throw new NoSuchTenantException(tenantIdentifier); |
| } |
| return tenant; |
| } |
| |
| @Override |
| public TenantContext createTenantContext(String tenantIdentifier) { |
| if (tenants.containsKey(tenantIdentifier)) { |
| throw new TenantAlreadyExistException(tenantIdentifier); |
| } |
| final InMemoryTenantContext tenantContext = new InMemoryTenantContext(tenantIdentifier); |
| tenants.put(tenantIdentifier, tenantContext); |
| logger.info("Created new tenant: {}", tenantContext); |
| return tenantContext; |
| } |
| |
| @Override |
| public void deleteTenantContext(String tenantIdentifier) { |
| final TenantContext removedTenant = tenants.remove(tenantIdentifier); |
| if (removedTenant == null) { |
| throw new NoSuchTenantException(tenantIdentifier); |
| } |
| } |
| |
| } |