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/**
* @licence app begin@
* Copyright (C) 2013 BMW AG
*
* This file is part of GENIVI Project Dlt - Diagnostic Log and Trace console apps.
*
* Contributions are licensed to the GENIVI Alliance under one or more
* Contribution License Agreements.
*
* \copyright
* This Source Code Form is subject to the terms of the
* Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with
* this file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
*
* \author Alexander Wenzel <Alexander.AW.Wenzel@bmw.de> BMW 2013
*
* \file dlt-system-journal.c
* For further information see http://www.genivi.org/.
* @licence end@
*/
/*******************************************************************************
** **
** SRC-MODULE: dlt-system-journal.c **
** **
** TARGET : linux **
** **
** PROJECT : DLT **
** **
** AUTHOR : Alexander Wenzel Alexander.AW.Wenzel@bmw.de **
** **
** PURPOSE : **
** **
** REMARKS : **
** **
** PLATFORM DEPENDANT [yes/no]: yes **
** **
** TO BE CHANGED BY USER [yes/no]: no **
** **
*******************************************************************************/
#if defined(DLT_SYSTEMD_JOURNAL_ENABLE)
#include <pthread.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <strings.h>
#include <errno.h>
#include <stdlib.h>
#include "dlt-system.h"
#include <systemd/sd-journal.h>
#include <systemd/sd-id128.h>
extern DltSystemThreads threads;
DLT_IMPORT_CONTEXT(dltsystem)
DLT_DECLARE_CONTEXT(journalContext)
int journal_checkUserBufferForFreeSpace()
{
int total_size, used_size;
dlt_user_check_buffer(&total_size, &used_size);
if((total_size - used_size) < (total_size/2))
{
return -1;
}
return 1;
}
void journal_thread(void *v_conf)
{
int r,r2,r3,r4,r5;
sd_journal *j;
char match[9+32+1] = "_BOOT_ID=";
sd_id128_t boot_id;
DLT_LOG(dltsystem, DLT_LOG_DEBUG,
DLT_STRING("dlt-system-journal, in thread."));
DltSystemConfiguration *conf = (DltSystemConfiguration *) v_conf;
DLT_REGISTER_CONTEXT(journalContext, conf->Journal.ContextId, "Journal Adapter");
r = sd_journal_open(&j, SD_JOURNAL_LOCAL_ONLY/*SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_RUNTIME_ONLY*/);
if (r < 0) {
DLT_LOG(dltsystem, DLT_LOG_ERROR,
DLT_STRING("dlt-system-journal, cannot open journal:"),DLT_STRING(strerror(-r)));
return;
}
if(conf->Journal.CurrentBoot)
{
/* show only current boot entries */
r = sd_id128_get_boot(&boot_id);
if(r<0)
{
DLT_LOG(dltsystem, DLT_LOG_ERROR,
DLT_STRING("dlt-system-journal failed to get boot id:"),DLT_STRING(strerror(-r)));
sd_journal_close(j);
return;
}
sd_id128_to_string(boot_id, match + 9);
r = sd_journal_add_match(j,match,strlen(match));
if(r<0)
{
DLT_LOG(dltsystem, DLT_LOG_ERROR,
DLT_STRING("dlt-system-journal failed to get match:"),DLT_STRING(strerror(-r)));
sd_journal_close(j);
return;
}
}
if(conf->Journal.Follow)
{
/* show only last 10 entries and follow */
r = sd_journal_seek_tail(j);
if(r<0)
{
DLT_LOG(dltsystem, DLT_LOG_ERROR,
DLT_STRING("dlt-system-journal failed to seek to tail:"),DLT_STRING(strerror(-r)));
sd_journal_close(j);
return;
}
r = sd_journal_previous_skip(j, 10);
if(r<0)
{
DLT_LOG(dltsystem, DLT_LOG_ERROR,
DLT_STRING("dlt-system-journal failed to seek back 10 entries:"),DLT_STRING(strerror(-r)));
sd_journal_close(j);
return;
}
}
while(!threads.shutdown)
{
const char *d2="",*d3="",*d4="",*d5="";
size_t l;
uint64_t time_usecs = 0;
int ret;
struct tm * timeinfo;
char buffer[256],buffer2[256];
int loglevel,systemd_loglevel;
// Jun 28 13:34:05 alexvbox systemd[1]: Started GENIVI DLT system.
ret = sd_journal_next(j);
if(ret>0)
{
sd_journal_get_realtime_usec(j, &time_usecs);
r2 = sd_journal_get_data(j, "_COMM",(const void **) &d2, &l);
r3 = sd_journal_get_data(j, "_PID",(const void **) &d3, &l);
r4 = sd_journal_get_data(j, "PRIORITY",(const void **) &d4, &l);
r5 = sd_journal_get_data(j, "MESSAGE",(const void **) &d5, &l);
if(r2>=0 && strlen(d2)>6) d2 +=6;
if(r3>=0 && strlen(d3)>5) d3 +=5;
if(r4>=0 && strlen(d4)>9) d4 +=9;
if(r5>=0 && strlen(d5)>8) d5 +=8;
time_usecs /=1000000;
timeinfo = localtime ((const time_t*)(&(time_usecs)));
strftime (buffer,sizeof(buffer),"%Y/%m/%d %H:%M:%S",timeinfo);
sprintf(buffer2,"%s[%s]:",d2,d3);
loglevel = DLT_LOG_INFO;
if(conf->Journal.MapLogLevels)
{
/* Map log levels from journal to DLT */
systemd_loglevel = atoi(d4);
switch(systemd_loglevel)
{
case 0: /* Emergency */
case 1: /* Alert */
case 2: /* Critical */
loglevel = DLT_LOG_FATAL;
break;
case 3: /* Error */
loglevel = DLT_LOG_ERROR;
break;
case 4: /* Warning */
case 5: /* Notice */
loglevel = DLT_LOG_WARN;
break;
case 6: /* Informational */
loglevel = DLT_LOG_INFO;
break;
case 7: /* Debug */
loglevel = DLT_LOG_DEBUG;
break;
default:
loglevel = DLT_LOG_INFO;
break;
}
}
DLT_LOG(journalContext, loglevel,
DLT_STRING(buffer),DLT_STRING(buffer2),DLT_STRING(d4),DLT_STRING(d5));
}
else
{
sd_journal_wait(j,1000000);
}
if(journal_checkUserBufferForFreeSpace()==-1)
{
// buffer is nearly full
// wait 500ms for writing next entry
struct timespec t;
t.tv_sec = 0;
t.tv_nsec = 1000000ul*500;
nanosleep(&t, NULL);
}
}
sd_journal_close(j);
DLT_UNREGISTER_CONTEXT(journalContext);
}
void start_systemd_journal(DltSystemConfiguration *conf)
{
DLT_LOG(dltsystem, DLT_LOG_DEBUG,
DLT_STRING("dlt-system-journal, start journal"));
static pthread_attr_t t_attr;
static pthread_t pt;
pthread_create(&pt, &t_attr, (void *)journal_thread, conf);
threads.threads[threads.count++] = pt;
}
#endif /* DLT_SYSTEMD_JOURNAL_ENABLE */
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