/home/aconway/svn/qpid/cpp/src/qpid/broker/QueuePolicy.h

00001 /*
00002  *
00003  * Licensed to the Apache Software Foundation (ASF) under one
00004  * or more contributor license agreements.  See the NOTICE file
00005  * distributed with this work for additional information
00006  * regarding copyright ownership.  The ASF licenses this file
00007  * to you under the Apache License, Version 2.0 (the
00008  * "License"); you may not use this file except in compliance
00009  * with the License.  You may obtain a copy of the License at
00010  * 
00011  *   http://www.apache.org/licenses/LICENSE-2.0
00012  * 
00013  * Unless required by applicable law or agreed to in writing,
00014  * software distributed under the License is distributed on an
00015  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
00016  * KIND, either express or implied.  See the License for the
00017  * specific language governing permissions and limitations
00018  * under the License.
00019  *
00020  */
00021 #ifndef _QueuePolicy_
00022 #define _QueuePolicy_
00023 
00024 #include "qpid/framing/FieldTable.h"
00025 
00026 namespace qpid {
00027     namespace broker {
00028         class QueuePolicy
00029         {
00030             static const std::string maxCountKey;
00031             static const std::string maxSizeKey;
00032 
00033             const uint32_t maxCount;
00034             const uint64_t maxSize;
00035             uint32_t count;
00036             uint64_t size;
00037             
00038             static int getInt(const qpid::framing::FieldTable& settings, const std::string& key, int defaultValue);
00039 
00040         public:
00041             QueuePolicy(uint32_t maxCount, uint64_t maxSize);
00042             QueuePolicy(const qpid::framing::FieldTable& settings);
00043             void enqueued(uint64_t size);
00044             void dequeued(uint64_t size);
00045             void update(qpid::framing::FieldTable& settings);
00046             bool limitExceeded();
00047             uint32_t getMaxCount() const { return maxCount; }
00048             uint64_t getMaxSize() const { return maxSize; }           
00049         };
00050     }
00051 }
00052 
00053 
00054 #endif

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