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/*
ELAPI
Implementation of the ELAPI logging interface.
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/>.
*/
#define _GNU_SOURCE
#include <errno.h> /* for errors */
#include <stdio.h> /* for printf() - temporarily */
#include "elapi_priv.h"
#include "elapi_event.h"
#include "elapi_sink.h"
#include "trace.h"
#include "config.h"
#include "ini_config.h"
#include "collection_tools.h" /*temporarily */
/* Buffer size for time string */
#define MAX_TIMESTR 200
/* I was told during review that I have to hard code the name.
* So it is hardcoded now.
*/
#define ELAPI_DEFAULT_ERROR_FILE "elapiconf.err"
/* Handler for logging through the sinks */
int elapi_internal_sink_handler(const char *sink,
int sink_len,
int type,
void *data,
int length,
void *passed_data,
int *stop)
{
struct elapi_sink_context *sink_env;
TRACE_FLOW_STRING("elapi_internal_sink_handler", "Entry.");
/* FIXME THIS IS A PLACEHOLDER FUNCTION FOR NOW */
sink_env = (struct elapi_sink_context *)(passed_data);
if (type == COL_TYPE_COLLECTION) {
printf("\n\n\nPROCESSING EVENT:\n");
col_debug_collection(sink_env->event, COL_TRAVERSE_DEFAULT);
}
else printf("Sink: %s\n", sink);
TRACE_FLOW_STRING("elapi_internal_sink_handler", "Exit.");
return EOK;
}
/* Internal sink cleanup function */
int elapi_internal_sink_cleanup_handler(const char *sink,
int sink_len,
int type,
void *data,
int length,
void *passed_data,
int *stop)
{
TRACE_FLOW_STRING("elapi_internal_sink_cleanup_handler", "Entry.");
/* FIXME THIS IS A PLACEHOLDER FUNCTION FOR NOW */
if (type != COL_TYPE_COLLECTION) printf("Cleaning Sink: %s\n", sink);
TRACE_FLOW_STRING("elapi_internal_sink_cleanup_handler", "Exit.");
return EOK;
}
/* Function to add a sink to the collection */
int elapi_internal_add_sink_to_collection(struct collection_item *sink_list,
char *sink,
char *appname)
{
int error = EOK;
int found = 0;
struct sink_descriptor sink_data;
TRACE_FLOW_STRING("elapi_internal_add_sink_to_collection", "Entry");
error = col_is_item_in_collection(sink_list,
sink,
COL_TYPE_ANY,
COL_TRAVERSE_DEFAULT,
&found);
if (error) {
TRACE_ERROR_NUMBER("Search returned error", error);
return error;
}
/* Check if it was found */
if (found) {
TRACE_ERROR_NUMBER("Attempt to add an exiting sink.", "");
return EINVAL;
}
/* Save the pointer to application name into the sink's data block */
sink_data.dblock.appname = appname;
TRACE_INFO_STRING("add_sink_to_list - saving appname:", sink_data.dblock.appname);
/* Try to load the sink library */
/* FIXME - we need to have at least one sink implemented to enable this code.
* It is a placeholder for now.
error = load_sink(&sink_data, sink);
if (error != 0) {
DEBUG_NUMBER("Failed to load sink", error);
return error;
}
*/
/* We got a valid sink so add it to the collection */
error = col_add_binary_property(sink_list, NULL,
sink, (void *)(&sink_data),
sizeof(struct sink_descriptor));
if (error != 0) {
TRACE_ERROR_NUMBER("Failed to add sink data as property", error);
return error;
}
TRACE_FLOW_NUMBER("elapi_internal_add_sink_to_collection returning", error);
return error;
}
/* Function to create a list of sinks */
int elapi_internal_construct_sink_list(struct elapi_dispatcher *handle)
{
int error = EOK;
char **current_sink;
TRACE_FLOW_STRING("elapi_internal_construct_sink_list", "Entry");
/* Allocate collection to store sinks */
error = col_create_collection(&(handle->sink_list),
ELAPI_SINKS,
COL_CLASS_ELAPI_SINK);
if (error != 0) {
TRACE_ERROR_NUMBER("Failed to create sink collection. Error", error);
/* No cleanup here.
* The calling function will call a cleanup
* of the dispatcher as a whole.*/
return error;
}
current_sink = handle->sinks;
handle->sink_counter = 0;
/* Add sinks as properties to the sink collection */
while (*current_sink != NULL) {
TRACE_INFO_STRING("Current sink", *current_sink);
TRACE_INFO_STRING("Will use appname:", handle->appname);
/* Load sink */
error = elapi_internal_add_sink_to_collection(handle->sink_list,
*current_sink,
handle->appname);
if ((error != 0) && (error != ELIBACC)) {
TRACE_ERROR_NUMBER("Failed to add sink", error);
/* No cleanup here. */
return error;
}
handle->sink_counter++;
current_sink++;
}
/* Check if we have any sinks available */
if (handle->sink_counter == 0) {
TRACE_ERROR_NUMBER("No sinks", ELIBACC);
/* No cleanup here. */
/* Return "Cannot access a needed shared library" */
return ELIBACC;
}
TRACE_FLOW_STRING("elapi_internal_construct_sink_list", "Returning success");
return EOK;
}
/* If we failed to read configuration record this in the local file */
void elapi_internal_dump_errors_to_file(struct collection_item *error_list)
{
FILE *efile;
char timestr[MAX_TIMESTR];
time_t time_in_sec;
struct tm *time_as_struct;
struct tm time_data;
TRACE_FLOW_STRING("elapi_internal_dump_errors_to_file", "Entry point");
efile = fopen(ELAPI_DEFAULT_ERROR_FILE, "a");
if (efile == NULL) {
TRACE_ERROR_STRING("No output available.", "Returning.");
return;
}
time_in_sec = time(NULL);
time_as_struct = localtime_r(&time_in_sec, &time_data);
fprintf(efile, "\n\n%*s\n\n", 80, "=");
if ((time_as_struct != NULL) &&
(strftime(timestr, sizeof(timestr), E_TIMESTAMP_FORMAT, time_as_struct) == 0)) {
fprintf(efile, "%s\n", timestr);
}
else {
TRACE_FLOW_STRING("elapi_internal_dump_errors_to_file", "Was not able to process time.");
}
fprintf(efile, "\n");
print_file_parsing_errors(efile, error_list);
fclose(efile);
TRACE_FLOW_STRING("elapi_internal_dump_errors_to_file", "Exit");
}
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