/** Initializes Ganglia and Gmetric
* on failure it prints a error message on stderr and exits */
void initGMetric () {
global_context = Ganglia_pool_create(NULL);
if(!global_context) {
DEBUG (0, "Unable to create global context. Exiting.\n");
exit(EXIT_FAILURE);
}
gmond_config = Ganglia_gmond_config_create (appConf.gmonConf, 1);
send_channels = Ganglia_udp_send_channels_create(global_context, gmond_config);
if(!send_channels) {
DEBUG (0, "Unable to create ganglia send channels. Exiting.\n");
exit(EXIT_FAILURE);
}
gmetric = Ganglia_gmetric_create(global_context);
if(!gmetric) {
DEBUG (0, "Unable to allocate gmetric structure. Exiting.\n");
exit(EXIT_FAILURE);
}
}
int
main( int argc, char *argv[] )
{
int rval;
/* process the commandline options */
if (cmdline_parser (argc, argv, &args_info) != 0)
exit(1);
/* create the global context */
global_context = Ganglia_pool_create(NULL);
if(!global_context)
{
fprintf(stderr,"Unable to create global context. Exiting.\n");
exit(1);
}
/* parse the configuration file */
gmond_config = Ganglia_gmond_config_create( args_info.conf_arg, !args_info.conf_given);
/* deal with spoof overrides */
cfg_t *globals = (cfg_t*) cfg_getsec( gmond_config, "globals" );
char *override_hostname = cfg_getstr( globals, "override_hostname" );
char *override_ip = cfg_getstr( globals, "override_ip" );
/* build the udp send channels */
send_channels = Ganglia_udp_send_channels_create(global_context, gmond_config);
if(!send_channels)
{
fprintf(stderr,"Unable to create ganglia send channels. Exiting.\n");
exit(1);
}
/* create the message */
gmetric = Ganglia_metric_create(global_context);
if(!gmetric)
{
fprintf(stderr,"Unable to allocate gmetric structure. Exiting.\n");
exit(1);
}
apr_pool_t *gm_pool = (apr_pool_t*)gmetric->pool;
if(args_info.spoof_given && args_info.heartbeat_given){
rval = Ganglia_metric_set(gmetric, "heartbeat", "0", "uint32", "", 0, 0, 0);
}else{
if( ! (args_info.name_given && args_info.value_given && args_info.type_given))
{
fprintf(stderr,"Incorrect options supplied, exiting.\n");
exit(1);
}
rval = Ganglia_metric_set( gmetric, args_info.name_arg, args_info.value_arg,
args_info.type_arg, args_info.units_arg, cstr_to_slope(args_info.slope_arg),
args_info.tmax_arg, args_info.dmax_arg);
}
/* TODO: make this less ugly later */
switch(rval)
{
case 1:
fprintf(stderr,"gmetric parameters invalid. exiting.\n");
exit(1);
case 2:
fprintf(stderr,"one of your parameters has an invalid character '\"'. exiting.\n");
exit(1);
case 3:
fprintf(stderr,"the type parameter \"%s\" is not a valid type. exiting.\n", args_info.type_arg);
exit(1);
case 4:
fprintf(stderr,"the value parameter \"%s\" does not represent a number. exiting.\n", args_info.value_arg);
exit(1);
}
/* TODO: Try to validate the spoof arg format. A better validation could
* be done here. This is just checking for a colon. */
if(args_info.spoof_given && !strchr(args_info.spoof_arg,':'))
{
fprintf(stderr,"Incorrect format for spoof argument. exiting.\n");
exit(1);
}
if(args_info.spoof_given)
Ganglia_metadata_add(gmetric, SPOOF_HOST, args_info.spoof_arg);
if(!args_info.spoof_given && override_hostname != NULL)
{
char *spoof_string = apr_pstrcat(gm_pool, override_ip != NULL ? override_ip : override_hostname, ":", override_hostname, NULL);
Ganglia_metadata_add(gmetric, SPOOF_HOST, spoof_string);
}
if(args_info.heartbeat_given)
Ganglia_metadata_add(gmetric, SPOOF_HEARTBEAT, "yes");
if(args_info.cluster_given)
Ganglia_metadata_add(gmetric, "CLUSTER", args_info.cluster_arg);
if(args_info.group_given)
Ganglia_metadata_add(gmetric, "GROUP", args_info.group_arg);
if(args_info.desc_given)
Ganglia_metadata_add(gmetric, "DESC", args_info.desc_arg);
if(args_info.title_given)
Ganglia_metadata_add(gmetric, "TITLE", args_info.title_arg);
/* send the message */
rval = Ganglia_metric_send(gmetric, send_channels);
if(rval)
{
fprintf(stderr,"There was an error sending to %d of the send channels.\n", rval);
}
/* cleanup */
Ganglia_metric_destroy(gmetric); /* not really necessary but for symmetry */
Ganglia_pool_destroy(global_context);
return 0;
}
