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/*
ELAPI
Implemenation of the stderr sink.
Copyright (C) Dmitri Pal <dpal@redhat.com> 2009
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <errno.h>
#include <malloc.h>
#include "elapi_sink.h"
#include "elapi_collection.h"
#include "elapi_debug.h"
#include "elapi_util.h"
/***** Standard functions each facility has to provide *****/
/* Initialize facility - open files, establish connnectons, etc... */
static int stderr_sink_init(struct data_descriptor *dblock)
{
struct serial_data *serialized_data;
DEBUG_STRING("stderr_sink_init","Entry");
/* Prepare the block where the format function will store its data */
errno = 0;
dblock->internal_data = NULL;
serialized_data = malloc(sizeof(struct serial_data));
if(serialized_data == NULL) return errno;
serialized_data->buffer = NULL;
serialized_data->size = 0;
serialized_data->length = 0;
serialized_data->nest_level = 0;
dblock->internal_data = (void *)(serialized_data);
DEBUG_NUMBER("DBLOCK in init",dblock);
DEBUG_NUMBER("internal data in init",dblock->internal_data);
DEBUG_STRING("Application name in init:",dblock->appname);
DEBUG_STRING("stderr_sink_init","Exit");
return EOK;
}
/* Formatting calback */
static int stderr_sink_format(struct data_descriptor *dblock,struct collection_item *event)
{
struct serial_data *serialized_data;
int error = EOK;
DEBUG_STRING("stderr_sink_format","Entry");
DEBUG_NUMBER("DBLOCK in format",dblock);
DEBUG_NUMBER("internal data in format",dblock->internal_data);
serialized_data = (struct serial_data *)(dblock->internal_data);
/* Traverse collection */
error = traverse_collection(event,ELAPI_TRAVERSE_DEFAULT | ELAPI_TRAVERSE_END ,serialize,(void *)(serialized_data));
if(error) {
DEBUG_NUMBER("traverse_collection returned error",error);
return error;
}
DEBUG_STRING("stderr_sink_format","Exit");
return EOK;
}
/* Cleanup per event internal data after a failure */
static void stderr_sink_cleanup(struct data_descriptor *dblock)
{
struct serial_data *serialized_data;
DEBUG_STRING("stderr_sink_cleanup","Entry");
serialized_data = (struct serial_data *)(dblock->internal_data);
if(serialized_data->buffer != NULL) {
free(serialized_data->buffer);
serialized_data->buffer = NULL;
serialized_data->size = 0;
serialized_data->length = 0;
serialized_data->nest_level = 0;
}
DEBUG_STRING("stderr_sink_cleanup","Exit");
}
/* Close facility */
static void stderr_sink_close(struct data_descriptor *dblock)
{
DEBUG_STRING("stderr_sink_close","Entry");
if(dblock->internal_data != NULL) {
stderr_sink_cleanup(dblock);
free(dblock->internal_data);
dblock->internal_data=NULL;
}
DEBUG_STRING("stderr_sink_close","Exit");
}
/* Logging calback */
static int stderr_sink_submit(struct data_descriptor *dblock)
{
struct serial_data *serialized_data;
DEBUG_STRING("stderr_sink_submit","Entry");
DEBUG_NUMBER("DBLOCK in submit",dblock);
DEBUG_NUMBER("internal data in submit",dblock->internal_data);
serialized_data = (struct serial_data *)(dblock->internal_data);
DEBUG_STRING("OUTPUT:",serialized_data->buffer);
fprintf(stderr,"%s\n",serialized_data->buffer);
stderr_sink_cleanup(dblock);
DEBUG_STRING("stderr_sink_submit","Exit");
return EOK;
}
/* Return a filled in structure */
void get_sink_info(struct sink_capability *sink_cpb_block)
{
DEBUG_STRING("get_sink_info","Entry");
sink_cpb_block->retry_interval = SINK_NEVER_RETRY;
sink_cpb_block->flags = SINK_FLAG_NO_LIMIT;
/* Instance never changes for this sink so one can load as many as he needs */
sink_cpb_block->instance = 0;
sink_cpb_block->init_cb = stderr_sink_init;
sink_cpb_block->cleanup_cb = stderr_sink_cleanup;
sink_cpb_block->format_cb = stderr_sink_format;
sink_cpb_block->submit_cb = stderr_sink_submit;
sink_cpb_block->close_cb = stderr_sink_close;
DEBUG_STRING("get_sink_info","Exit");
}
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