snmpnotifyfiltertable_data_access.c

开发snmp的开发包有两个开放的SNMP开发库

/*
 * Note: this file originally auto-generated by mib2c using
 *       version : 1.17 $ of : mfd-data-access.m2c,v $ 
 *
 * $Id: snmpNotifyFilterTable_data_access.c 14169 2006-01-25 16:28:12Z dts12 $
 */
/*
 * standard Net-SNMP includes 
 */
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include <net-snmp/library/vacm.h>

/*
 * include our parent header 
 */
#include "snmpNotifyFilterTable.h"


#include "snmpNotifyFilterTable_data_access.h"

/** @ingroup interface 
 * @addtogroup data_access data_access: Routines to access data
 *
 * These routines are used to locate the data used to satisfy
 * requests.
 * 
 * @{
 */
/**********************************************************************
 **********************************************************************
 ***
 *** Table snmpNotifyFilterTable
 ***
 **********************************************************************
 **********************************************************************/
/*
 * SNMP-NOTIFICATION-MIB::snmpNotifyFilterTable is subid 3 of snmpNotifyObjects.
 * Its status is Current.
 * OID: .1.3.6.1.6.3.13.1.3, length: 9
 */

/**
 * initialization for snmpNotifyFilterTable data access
 *
 * This function is called during startup to allow you to
 * allocate any resources you need for the data table.
 *
 * @param snmpNotifyFilterTable_reg
 *        Pointer to snmpNotifyFilterTable_registration
 *
 * @retval MFD_SUCCESS : success.
 * @retval MFD_ERROR   : unrecoverable error.
 */
int
snmpNotifyFilterTable_init_data(snmpNotifyFilterTable_registration *
                                snmpNotifyFilterTable_reg)
{
    DEBUGMSGTL(("verbose:snmpNotifyFilterTable:snmpNotifyFilterTable_init_data", "called\n"));

    /*
     * TODO:303:o: Initialize snmpNotifyFilterTable data.
     */

    return MFD_SUCCESS;
}                               /* snmpNotifyFilterTable_init_data */

/**
 * container overview
 *
 */

/**
 * container initialization
 *
 * @param container_ptr_ptr A pointer to a container pointer. If you
 *        create a custom container, use this parameter to return it
 *        to the MFD helper. If set to NULL, the MFD helper will
 *        allocate a container for you.
 *
 *  This function is called at startup to allow you to customize certain
 *  aspects of the access method. For the most part, it is for advanced
 *  users. The default code should suffice for most cases. If no custom
 *  container is allocated, the MFD code will create one for your.
 *
 * @remark
 *  This would also be a good place to do any initialization needed
 *  for you data source. For example, opening a connection to another
 *  process that will supply the data, opening a database, etc.
 */
void
snmpNotifyFilterTable_container_init(netsnmp_container **container_ptr_ptr)
{
    DEBUGMSGTL(("verbose:snmpNotifyFilterTable:snmpNotifyFilterTable_container_init", "called\n"));

    if (NULL == container_ptr_ptr) {
        snmp_log(LOG_ERR,
                 "bad container param to snmpNotifyFilterTable_container_init\n");
        return;
    }

    /*
     * For advanced users, you can use a custom container. If you
     * do not create one, one will be created for you.
     */
    *container_ptr_ptr = NULL;

}                               /* snmpNotifyFilterTable_container_init */

/**
 * container shutdown
 *
 * @param container_ptr A pointer to the container.
 *
 *  This function is called at shutdown to allow you to customize certain
 *  aspects of the access method. For the most part, it is for advanced
 *  users. The default code should suffice for most cases.
 *
 *  This function is called before snmpNotifyFilterTable_container_free().
 *
 * @remark
 *  This would also be a good place to do any cleanup needed
 *  for you data source. For example, closing a connection to another
 *  process that supplied the data, closing a database, etc.
 */
void
snmpNotifyFilterTable_container_shutdown(netsnmp_container *container_ptr)
{
    DEBUGMSGTL(("verbose:snmpNotifyFilterTable:snmpNotifyFilterTable_container_shutdown", "called\n"));

    if (NULL == container_ptr) {
        snmp_log(LOG_ERR,
                 "bad params to snmpNotifyFilterTable_container_shutdown\n");
        return;
    }

}                               /* snmpNotifyFilterTable_container_shutdown */

/**
 * load initial data
 *
 * TODO:350:M: Implement snmpNotifyFilterTable data load
 *
 * @param container container to which items should be inserted
 *
 * @retval MFD_SUCCESS              : success.
 * @retval MFD_RESOURCE_UNAVAILABLE : Can't access data source
 * @retval MFD_ERROR                : other error.
 *
 *  This function is called to load the index(es) (and data, optionally)
 *  for the every row in the data set.
 *
 * @remark
 *  While loading the data, the only important thing is the indexes.
 *  If access to your data is cheap/fast (e.g. you have a pointer to a
 *  structure in memory), it would make sense to update the data here.
 *  If, however, the accessing the data invovles more work (e.g. parsing
 *  some other existing data, or peforming calculations to derive the data),
 *  then you can limit yourself to setting the indexes and saving any
 *  information you will need later. Then use the saved information in
 *  snmpNotifyFilterTable_row_prep() for populating data.
 *
 * @note
 *  If you need consistency between rows (like you want statistics
 *  for each row to be from the same time frame), you should set all
 *  data here.
 *
 */
int
snmpNotifyFilterTable_container_load(netsnmp_container *container)
{
    snmpNotifyFilterTable_rowreq_ctx *rowreq_ctx;
    size_t          count = 0;

    /*
     * temporary storage for index values
     */
    /*
     * snmpNotifyFilterProfileName(1)/SnmpAdminString/ASN_OCTET_STR/char(char)//L/A/W/e/R/d/H
     */
    char            snmpNotifyFilterProfileName[32];
    size_t          snmpNotifyFilterProfileName_len;
    /*
     * snmpNotifyFilterSubtree(1)/OBJECTID/ASN_OBJECT_ID/oid(oid)//L/a/w/e/r/d/h
     */
        /** 128 - 1(entry) - 1(col) - 1(other indexes) = 114 */
    oid             snmpNotifyFilterSubtree[114];
    size_t          snmpNotifyFilterSubtree_len;


    DEBUGMSGTL(("verbose:snmpNotifyFilterTable:snmpNotifyFilterTable_container_load", "called\n"));

    /*
     * TODO:351:M: |-> Load/update data in the snmpNotifyFilterTable container.
     * loop over your snmpNotifyFilterTable data, allocate a rowreq context,
     * set the index(es) [and data, optionally] and insert into
     * the container.
     */
    while (1) {
        /*
         * check for end of data; bail out if there is no more data
         */
        if (1)
            break;

        /*
         * TODO:352:M: |   |-> set indexes in new snmpNotifyFilterTable rowreq context.
         * data context will be set from the param (unless NULL,
         *      in which case a new data context will be allocated)
         */
        rowreq_ctx = snmpNotifyFilterTable_allocate_rowreq_ctx(NULL);
        if (NULL == rowreq_ctx) {
            snmp_log(LOG_ERR, "memory allocation failed\n");
            return MFD_RESOURCE_UNAVAILABLE;
        }
        if (MFD_SUCCESS !=
            snmpNotifyFilterTable_indexes_set(rowreq_ctx,
                                              snmpNotifyFilterProfileName,
                                              snmpNotifyFilterProfileName_len,
                                              snmpNotifyFilterSubtree,
                                              snmpNotifyFilterSubtree_len))
        {
            snmp_log(LOG_ERR,
                     "error setting index while loading "
                     "snmpNotifyFilterTable data.\n");
            snmpNotifyFilterTable_release_rowreq_ctx(rowreq_ctx);
            continue;
        }

        /*
         * TODO:352:r: |   |-> populate snmpNotifyFilterTable data context.
         * Populate data context here. (optionally, delay until row prep)
         */
        /*
         * non-TRANSIENT data: no need to copy. set pointer to data 
         */

        /*
         * insert into table container
         */
        CONTAINER_INSERT(container, rowreq_ctx);
        ++count;
    }

    DEBUGMSGT(("verbose:snmpNotifyFilterTable:snmpNotifyFilterTable_container_load", "inserted %d records\n", count));

    return MFD_SUCCESS;
}                               /* snmpNotifyFilterTable_container_load */

/**
 * container clean up
 *
 * @param container container with all current items
 *
 *  This optional callback is called prior to all
 *  item's being removed from the container. If you
 *  need to do any processing before that, do it here.
 *
 * @note
 *  The MFD helper will take care of releasing all the row contexts.
 *
 */
void
snmpNotifyFilterTable_container_free(netsnmp_container *container)
{
    DEBUGMSGTL(("verbose:snmpNotifyFilterTable:snmpNotifyFilterTable_container_free", "called\n"));

    /*
     * TODO:380:M: Free snmpNotifyFilterTable container data.
     */
}                               /* snmpNotifyFilterTable_container_free */

/**
 * prepare row for processing.
 *
 *  When the agent has located the row for a request, this function is
 *  called to prepare the row for processing. If you fully populated
 *  the data context during the index setup phase, you may not need to
 *  do anything.
 *
 * @param rowreq_ctx pointer to a context.
 *
 * @retval MFD_SUCCESS     : success.
 * @retval MFD_ERROR       : other error.
 */
int
snmpNotifyFilterTable_row_prep(snmpNotifyFilterTable_rowreq_ctx *
                               rowreq_ctx)
{
    DEBUGMSGTL(("verbose:snmpNotifyFilterTable:snmpNotifyFilterTable_row_prep", "called\n"));

    netsnmp_assert(NULL != rowreq_ctx);