001/** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.camel.impl; 018 019import java.util.concurrent.ConcurrentHashMap; 020import java.util.concurrent.ConcurrentMap; 021 022import org.apache.camel.api.management.ManagedOperation; 023import org.apache.camel.api.management.ManagedResource; 024import org.apache.camel.spi.StateRepository; 025import org.apache.camel.support.ServiceSupport; 026 027/** 028 * This {@link MemoryStateRepository} class is a memory-based implementation of a {@link StateRepository}. 029 */ 030@ManagedResource(description = "Memory based state repository") 031public class MemoryStateRepository extends ServiceSupport implements StateRepository<String, String> { 032 033 private final ConcurrentMap<String, String> cache = new ConcurrentHashMap<>(); 034 035 @Override 036 @ManagedOperation(description = "Adds the value of the given key to the store") 037 public void setState(String key, String value) { 038 cache.put(key, value); 039 } 040 041 @Override 042 @ManagedOperation(description = "Gets the value of the given key from store") 043 public String getState(String key) { 044 return cache.get(key); 045 } 046 047 @Override 048 protected void doStart() throws Exception { 049 // noop 050 } 051 052 @Override 053 protected void doStop() throws Exception { 054 cache.clear(); 055 } 056}