/* * Copyright (c) 2004-2009 Voltaire, Inc. All rights reserved. * Copyright (c) 2002-2005 Mellanox Technologies LTD. All rights reserved. * Copyright (c) 1996-2003 Intel Corporation. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * */ #ifndef _OSM_DB_H_ #define _OSM_DB_H_ /* * Abstract: * Declaration of the DB interface. */ #include #include struct osm_log; #ifdef __cplusplus # define BEGIN_C_DECLS extern "C" { # define END_C_DECLS } #else /* !__cplusplus */ # define BEGIN_C_DECLS # define END_C_DECLS #endif /* __cplusplus */ BEGIN_C_DECLS /****h* OpenSM/Database * NAME * Database * * DESCRIPTION * The OpenSM database interface provide the means to restore persistent * data, query, modify, delete and eventually commit it back to the * persistent media. * * The interface is defined such that it can is not "data dependent": * All keys and data items are texts. * * The DB implementation should be thread safe, thus callers do not need to * provide serialization. * * This object should be treated as opaque and should be * manipulated only through the provided functions. * * AUTHOR * Eitan Zahavi, Mellanox Technologies LTD * *********/ /****s* OpenSM: Database/osm_db_domain_t * NAME * osm_db_domain_t * * DESCRIPTION * A domain of the database. Can be viewed as a database table. * * The osm_db_domain_t object should be treated as opaque and should * be manipulated only through the provided functions. * * SYNOPSIS */ typedef struct osm_db_domain { struct osm_db *p_db; void *p_domain_imp; } osm_db_domain_t; /* * FIELDS * p_db * Pointer to the parent database object. * * p_domain_imp * Pointer to the db implementation object * * SEE ALSO * osm_db_t *********/ /****s* OpenSM: Database/osm_db_t * NAME * osm_db_t * * DESCRIPTION * The main database object. * * The osm_db_t object should be treated as opaque and should * be manipulated only through the provided functions. * * SYNOPSIS */ typedef struct osm_db { void *p_db_imp; struct osm_log *p_log; cl_list_t domains; } osm_db_t; /* * FIELDS * p_db_imp * Pointer to the database implementation object * * p_log * Pointer to the OSM logging facility * * domains * List of initialize domains * * SEE ALSO *********/ /****f* OpenSM: Database/osm_db_construct * NAME * osm_db_construct * * DESCRIPTION * Construct a database. * * SYNOPSIS */ void osm_db_construct(IN osm_db_t * p_db); /* * PARAMETERS * p_db * [in] Pointer to the database object to construct * * RETURN VALUES * NONE * * SEE ALSO * Database, osm_db_init, osm_db_destroy *********/ /****f* OpenSM: Database/osm_db_destroy * NAME * osm_db_destroy * * DESCRIPTION * Destroys the osm_db_t structure. * * SYNOPSIS */ void osm_db_destroy(IN osm_db_t * p_db); /* * PARAMETERS * p_db * [in] Pointer to osm_db_t structure to destroy * * SEE ALSO * Database, osm_db_construct, osm_db_init *********/ /****f* OpenSM: Database/osm_db_init * NAME * osm_db_init * * DESCRIPTION * Initializes the osm_db_t structure. * * SYNOPSIS */ int osm_db_init(IN osm_db_t * p_db, IN struct osm_log * p_log); /* * PARAMETERS * * p_db * [in] Pointer to the database object to initialize * * p_log * [in] Pointer to the OSM logging facility * * RETURN VALUES * 0 on success 1 otherwise * * SEE ALSO * Database, osm_db_construct, osm_db_destroy *********/ /****f* OpenSM: Database/osm_db_domain_init * NAME * osm_db_domain_init * * DESCRIPTION * Initializes the osm_db_domain_t structure. * * SYNOPSIS */ osm_db_domain_t *osm_db_domain_init(IN osm_db_t * p_db, IN const char *domain_name); /* * PARAMETERS * * p_db * [in] Pointer to the database object to initialize * * domain_name * [in] a char array with the domain name. * * RETURN VALUES * pointer to the new domain object or NULL if failed. * * SEE ALSO * Database, osm_db_construct, osm_db_destroy *********/ /****f* OpenSM: Database/osm_db_restore * NAME * osm_db_restore * * DESCRIPTION * Reads the entire domain from persistent storage - overrides all * existing cached data (if any). * * SYNOPSIS */ int osm_db_restore(IN osm_db_domain_t * p_domain); /* * PARAMETERS * * p_domain * [in] Pointer to the database domain object to restore * from persistent db * * RETURN VALUES * 0 if successful 1 otherwize * * SEE ALSO * Database, osm_db_domain_init, osm_db_clear, osm_db_store, * osm_db_keys, osm_db_lookup, osm_db_update, osm_db_delete *********/ /****f* OpenSM: Database/osm_db_clear * NAME * osm_db_clear * * DESCRIPTION * Clears the entire domain values from/in the cache * * SYNOPSIS */ int osm_db_clear(IN osm_db_domain_t * p_domain); /* * PARAMETERS * * p_domain * [in] Pointer to the database domain object to clear * * RETURN VALUES * 0 if successful 1 otherwize * * SEE ALSO * Database, osm_db_domain_init, osm_db_restore, osm_db_store, * osm_db_keys, osm_db_lookup, osm_db_update, osm_db_delete *********/ /****f* OpenSM: Database/osm_db_store * NAME * osm_db_store * * DESCRIPTION * Store the domain cache back to the database (commit) * * SYNOPSIS */ int osm_db_store(IN osm_db_domain_t * p_domain, IN boolean_t fsync_high_avail_files); /* * PARAMETERS * * p_domain * [in] Pointer to the database domain object to restore from * persistent db * * fsync_high_avail_files * [in] Boolean that indicates whether or not to synchronize * in-memory high availability files with storage * * RETURN VALUES * 0 if successful 1 otherwize * * SEE ALSO * Database, osm_db_domain_init, osm_db_restore, osm_db_clear, * osm_db_keys, osm_db_lookup, osm_db_update, osm_db_delete *********/ /****f* OpenSM: Database/osm_db_keys * NAME * osm_db_keys * * DESCRIPTION * Retrive all keys of the domain * * SYNOPSIS */ int osm_db_keys(IN osm_db_domain_t * p_domain, OUT cl_list_t * p_key_list); /* * PARAMETERS * * p_domain * [in] Pointer to the database domain object * * p_key_list * [out] List of key values. It should be PRE constructed and initialized. * * RETURN VALUES * 0 if successful 1 otherwize * * NOTE: the caller needs to free and destruct the list, * the keys returned are intrnal to the hash and should NOT be free'ed * * SEE ALSO * Database, osm_db_domain_init, osm_db_restore, osm_db_clear, osm_db_store, * osm_db_lookup, osm_db_update, osm_db_delete *********/ /****f* OpenSM: Database/osm_db_lookup * NAME * osm_db_lookup * * DESCRIPTION * Lookup an entry in the domain by the given key * * SYNOPSIS */ /* lookup value by key */ char *osm_db_lookup(IN osm_db_domain_t * p_domain, IN char *p_key); /* * PARAMETERS * * p_domain * [in] Pointer to the database domain object * * key * [in] The key to look for * * RETURN VALUES * the value as char * or NULL if not found * * SEE ALSO * Database, osm_db_domain_init, osm_db_restore, osm_db_clear, osm_db_store, * osm_db_keys, osm_db_update, osm_db_delete *********/ /****f* OpenSM: Database/osm_db_update * NAME * osm_db_update * * DESCRIPTION * Set the value of the given key * * SYNOPSIS */ int osm_db_update(IN osm_db_domain_t * p_domain, IN char *p_key, IN char *p_val); /* * PARAMETERS * * p_domain * [in] Pointer to the database domain object * * p_key * [in] The key to update * * p_val * [in] The value to update * * RETURN VALUES * 0 on success * * NOTE: the value will be duplicated so can be free'ed * * SEE ALSO * Database, osm_db_domain_init, osm_db_restore, osm_db_clear, osm_db_store, * osm_db_keys, osm_db_lookup, osm_db_delete *********/ /****f* OpenSM: Database/osm_db_delete * NAME * osm_db_delete * * DESCRIPTION * Delete an entry by the given key * * SYNOPSIS */ int osm_db_delete(IN osm_db_domain_t * p_domain, IN char *p_key); /* * PARAMETERS * * p_domain * [in] Pointer to the database domain object * * p_key * [in] The key to look for * * RETURN VALUES * 0 on success * * SEE ALSO * Database, osm_db_domain_init, osm_db_restore, osm_db_clear, osm_db_store, * osm_db_keys, osm_db_lookup, osm_db_update *********/ END_C_DECLS #endif /* _OSM_DB_H_ */