1 /*

     2  *    Copyright 2004-2006 Intel Corporation

     3  * 

     4  *    Licensed under the Apache License, Version 2.0 (the "License");

     5  *    you may not use this file except in compliance with the License.

     6  *    You may obtain a copy of the License at

     7  * 

     8  *        http://www.apache.org/licenses/LICENSE-2.0

     9  * 

    10  *    Unless required by applicable law or agreed to in writing, software

    11  *    distributed under the License is distributed on an "AS IS" BASIS,

    12  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

    13  *    See the License for the specific language governing permissions and

    14  *    limitations under the License.

    15  */

    16 

    17 #ifndef _LINK_STORE_H_

    18 #define _LINK_STORE_H_

    19 

    20 #include <oasys/debug/DebugUtils.h>

    21 #include <oasys/serialize/TypeShims.h>

    22 #include <oasys/storage/InternalKeyDurableTable.h>

    23 #include <oasys/util/Singleton.h>

    24 

    25 namespace dtn {

    26 

    27 class Link;

    28 

    29 /**

    30  * Convenience typedef for the oasys adaptor that implements the link

    31  * durable store.

    32  */

    33 typedef oasys::InternalKeyDurableTable<

    34     oasys::StringShim, std::string, Link> LinkStoreImpl;

    35 

    36 /**

    37  * The class for link storage.

    38  */

    39 class LinkStore : public oasys::Singleton<LinkStore, false>,

    40                   public LinkStoreImpl {

    41 public:

    42     /**

    43      * Boot time initializer that takes as a parameter the storage

    44      * configuration to use.

    45      */

    46     static int init(const oasys::StorageConfig& cfg,

    47                     oasys::DurableStore*        store) 

    48     {

    49         if (instance_ != NULL) {

    50             PANIC("LinkStore::init called multiple times");

    51         }

    52         instance_ = new LinkStore();

    53         return instance_->do_init(cfg, store);

    54     }

    55     

    56     /**

    57      * Constructor.

    58      */

    59     LinkStore();

    60 

    61     /**

    62      * Return true if initialization has completed.

    63      */

    64     static bool initialized() { return (instance() != NULL); }

    65 };

    66 

    67 } // namespace dtn

    68 

    69 #endif /* _LINK_STORE_H_ */