| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
| ServiceSupport |
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| 1.2857142857142858;1.286 |
| 1 | /** |
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| 2 | * |
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| 3 | * Licensed to the Apache Software Foundation (ASF) under one or more |
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| 4 | * contributor license agreements. See the NOTICE file distributed with |
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| 5 | * this work for additional information regarding copyright ownership. |
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| 6 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
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| 7 | * (the "License"); you may not use this file except in compliance with |
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| 8 | * the License. You may obtain a copy of the License at |
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| 9 | * |
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| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 11 | * |
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| 12 | * Unless required by applicable law or agreed to in writing, software |
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| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 15 | * See the License for the specific language governing permissions and |
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| 16 | * limitations under the License. |
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| 17 | */ |
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| 18 | package org.apache.camel.impl; |
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| 19 | ||
| 20 | import java.util.concurrent.atomic.AtomicBoolean; |
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| 21 | ||
| 22 | import org.apache.camel.Service; |
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| 23 | ||
| 24 | /** |
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| 25 | * A useful base class which ensures that a service is only initialized once and provides some helper methods for |
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| 26 | * enquiring of its status |
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| 27 | * |
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| 28 | * @version $Revision: 534063 $ |
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| 29 | */ |
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| 30 | 642 | public abstract class ServiceSupport implements Service { |
| 31 | 642 | private AtomicBoolean started = new AtomicBoolean(false); |
| 32 | 642 | private AtomicBoolean stopping = new AtomicBoolean(false); |
| 33 | 642 | private AtomicBoolean stopped = new AtomicBoolean(false); |
| 34 | ||
| 35 | public void start() throws Exception { |
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| 36 | 383 | if (started.compareAndSet(false, true)) { |
| 37 | 339 | doStart(); |
| 38 | } |
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| 39 | 383 | } |
| 40 | ||
| 41 | public void stop() throws Exception { |
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| 42 | 522 | if (stopped.compareAndSet(false, true)) { |
| 43 | 479 | stopping.set(true); |
| 44 | try { |
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| 45 | 479 | doStop(); |
| 46 | } |
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| 47 | finally { |
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| 48 | 479 | stopped.set(true); |
| 49 | 479 | started.set(false); |
| 50 | 479 | stopping.set(false); |
| 51 | 479 | } |
| 52 | } |
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| 53 | 522 | } |
| 54 | ||
| 55 | /** |
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| 56 | * @return true if this service has been started |
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| 57 | */ |
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| 58 | public boolean isStarted() { |
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| 59 | 103 | return started.get(); |
| 60 | } |
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| 61 | ||
| 62 | /** |
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| 63 | * @return true if this service is in the process of closing |
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| 64 | */ |
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| 65 | public boolean isStopping() { |
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| 66 | 10 | return stopping.get(); |
| 67 | } |
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| 68 | ||
| 69 | ||
| 70 | /** |
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| 71 | * @return true if this service is closed |
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| 72 | */ |
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| 73 | public boolean isStopped() { |
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| 74 | 3 | return stopped.get(); |
| 75 | } |
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| 76 | ||
| 77 | protected abstract void doStart() throws Exception; |
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| 78 | ||
| 79 | protected abstract void doStop() throws Exception; |
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| 80 | ||
| 81 | } |