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POusing net-snmp:can not regularly read and update data from a file
 

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  1. POusing net-snmp:can not regularly read and update data from a file
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    <pre><code>/* * Note: this file originally auto-generated by mib2c using * $ mib2c.create-dataset.conf */ #include &lt;net-snmp/net-snmp-config.h&gt; #include &lt;net-snmp/net-snmp-includes.h&gt; #include &lt;net-snmp/agent/net-snmp-agent-includes.h&gt; #include "poolTable.h" /** Initialize the poolTable table by defining its contents and how it's structured */ int initialize_table_poolTable(void) { const oid poolTable_oid[] = {1,3,6,1,4,1,21068,4,1}; netsnmp_table_data_set *table_set; /* create the table structure itself */ table_set = netsnmp_create_table_data_set("poolTable"); table_set-&gt;allow_creation = 1; /********************* Adding indexes************************/ DEBUGMSGTL(("initialize_table_poolTable","adding indexes to table poolTable\n")); netsnmp_table_set_add_indexes(table_set,ASN_INTEGER,/* index:poolIndex*/0); DEBUGMSGTL(("initialize_table_poolTable","adding column types to table poolTable\n")); netsnmp_table_set_multi_add_default_row(table_set,COLUMN_POOLINDEX, ASN_INTEGER, 0, NULL, 0,COLUMN_POOLINOCTETS, ASN_COUNTER, 0, NULL, 0,0); netsnmp_register_table_data_set( netsnmp_create_handler_registration("poolTable", poolTable_handler,poolTable_oid, OID_LENGTH(poolTable_oid), HANDLER_CAN_RWRITE), table_set, NULL); int index=1; long data[2]; FILE *fin; fin=fopen("/home/xx/data.txt","r"); if(!fin) { snmp_log(LOG_ERR,"fopen failed in locating file\n"); return -1; } while(!feof(fin)) { while((fscanf(fin,"%ld %ld",&amp;data[0],&amp;data[1])) == 1) { } if(feof(fin) == 0) { fillTableWithValues(table_set,index,data[0],data[1]); } index++; } return; } void init_poolTable(void) { initialize_table_poolTable(); } int poolTable_handler(netsnmp_mib_handler *handler, netsnmp_handler_registration *reginfo, netsnmp_agent_request_info *reqinfo, netsnmp_request_info *requests) { return SNMP_ERR_NOERROR; } void fillTableWithValues(netsnmp_table_data_set *table_set,int i,int Value1,int Value2) { netsnmp_table_row *row; row = netsnmp_create_table_data_row(); int index; index=i; netsnmp_table_row_add_index(row, ASN_INTEGER, &amp;index, sizeof(index)); //setting a value to an integer column of my table int AValue = Value1; netsnmp_set_row_column(row, COLUMN_POOLINDEX, ASN_INTEGER, &amp;AValue, sizeof(AValue)); int BValue = Value2; netsnmp_set_row_column(row,COLUMN_POOLINOCTETS, ASN_COUNTER, &amp;BValue, sizeof(BValue)); netsnmp_table_dataset_add_row(table_set, row); netsnmp_register_auto_data_table(table_set, NULL); }//end FillDaPathTableUp() /******************************************************** Data.txt ************************************************************* 1 567 2 456 3 578 4 688 5 790 6 378 *************************************************************/ </code></pre> <p>Above is my code for ‘table’.</p> <p>I am compiling it as a “subagent” which is getting data from a file.</p> <p>But my issue is it is taking the data from first time only.</p> <p>The file “data.txt” is changing its values frequently but with snmpwalk I am only getting the same data every time. How can I get the updated data ? Where am I making a mistake? If it is possible with a <code>for(;;)</code>loop, then where should I add it? Please help me.</p>
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    1. This table or related slice is empty.
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    1. USAnup Cowkur
    1. USJatin Bodarya
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    1. This table or related slice is empty.
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      1. POusing net-snmp:can not regularly read and update data from a file
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    1. This table or related slice is empty.
 

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