#include "collectd.h"
#include "common.h"
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+
+#include <pthread.h>
+
#include "plugin.h"
#include "configfile.h"
-#include "types_list.h"
#if HAVE_STATGRAB_H
# include <statgrab.h>
static int loop = 0;
-static void sigIntHandler (int signal)
+static void *do_flush (void __attribute__((unused)) *arg)
+{
+ INFO ("Flushing all data.");
+ plugin_flush (NULL, -1, NULL);
+ INFO ("Finished flushing all data.");
+ pthread_exit (NULL);
+ return NULL;
+}
+
+static void sig_int_handler (int __attribute__((unused)) signal)
{
loop++;
}
-static void sigTermHandler (int signal)
+static void sig_term_handler (int __attribute__((unused)) signal)
{
loop++;
}
-static int init_global_variables (void)
+static void sig_usr1_handler (int __attribute__((unused)) signal)
+{
+ pthread_t thread;
+ pthread_attr_t attr;
+
+ /* flushing the data might take a while,
+ * so it should be done asynchronously */
+ pthread_attr_init (&attr);
+ pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
+ pthread_create (&thread, &attr, do_flush, NULL);
+}
+
+static int init_hostname (void)
{
const char *str;
+ struct addrinfo ai_hints;
+ struct addrinfo *ai_list;
+ struct addrinfo *ai_ptr;
+ int status;
+
str = global_option_get ("Hostname");
if (str != NULL)
{
- strncpy (hostname_g, str, sizeof (hostname_g));
+ sstrncpy (hostname_g, str, sizeof (hostname_g));
+ return (0);
}
- else
+
+ if (gethostname (hostname_g, sizeof (hostname_g)) != 0)
{
- if (gethostname (hostname_g, sizeof (hostname_g)) != 0)
- {
- fprintf (stderr, "`gethostname' failed and no "
- "hostname was configured.\n");
- return (-1);
- }
+ fprintf (stderr, "`gethostname' failed and no "
+ "hostname was configured.\n");
+ return (-1);
+ }
+
+ str = global_option_get ("FQDNLookup");
+ if (IS_FALSE (str))
+ return (0);
+
+ memset (&ai_hints, '\0', sizeof (ai_hints));
+ ai_hints.ai_flags = AI_CANONNAME;
+
+ status = getaddrinfo (hostname_g, NULL, &ai_hints, &ai_list);
+ if (status != 0)
+ {
+ ERROR ("Looking up \"%s\" failed. You have set the "
+ "\"FQDNLookup\" option, but I cannot resolve "
+ "my hostname to a fully qualified domain "
+ "name. Please fix you network "
+ "configuration.", hostname_g);
+ return (-1);
}
- DEBUG ("hostname_g = %s;", hostname_g);
+
+ for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next)
+ {
+ if (ai_ptr->ai_canonname == NULL)
+ continue;
+
+ sstrncpy (hostname_g, ai_ptr->ai_canonname, sizeof (hostname_g));
+ break;
+ }
+
+ freeaddrinfo (ai_list);
+ return (0);
+} /* int init_hostname */
+
+static int init_global_variables (void)
+{
+ const char *str;
str = global_option_get ("Interval");
if (str == NULL)
}
DEBUG ("interval_g = %i;", interval_g);
+ if (init_hostname () != 0)
+ return (-1);
+ DEBUG ("hostname_g = %s;", hostname_g);
+
return (0);
} /* int init_global_variables */
/* TODO
* Remove all settings but `-f' and `-C'
*/
-static void exit_usage (char *name)
+static void exit_usage (int status)
{
printf ("Usage: "PACKAGE" [OPTIONS]\n\n"
" General:\n"
" -C <file> Configuration file.\n"
" Default: "CONFIGFILE"\n"
+ " -t Test config and exit.\n"
+ " -T Test plugin read and exit.\n"
" -P <file> PID-file.\n"
" Default: "PIDFILE"\n"
#if COLLECT_DAEMON
" -f Don't fork to the background.\n"
#endif
+ " -h Display help (this message)\n"
"\nBuiltin defaults:\n"
" Config-File "CONFIGFILE"\n"
" PID-File "PIDFILE"\n"
"\n"PACKAGE" "VERSION", http://collectd.org/\n"
"by Florian octo Forster <octo@verplant.org>\n"
"for contributions see `AUTHORS'\n");
- exit (0);
-} /* static void exit_usage (char *name) */
+ exit (status);
+} /* static void exit_usage (int status) */
static int do_init (void)
{
}
#endif
- read_types_list ();
plugin_init_all ();
return (0);
{
struct timeval tv_now;
struct timeval tv_next;
+ struct timeval tv_wait;
struct timespec ts_wait;
while (loop == 0)
#endif
/* Issue all plugins */
- plugin_read_all (&loop);
+ plugin_read_all ();
if (gettimeofday (&tv_now, NULL) < 0)
{
return (-1);
}
- if (timeval_sub_timespec (&tv_next, &tv_now, &ts_wait) != 0)
+ if (timeval_cmp (tv_next, tv_now, &tv_wait) <= 0)
{
- WARNING ("Not sleeping because "
- "`timeval_sub_timespec' returned "
- "non-zero!");
+ WARNING ("Not sleeping because the next interval is "
+ "%i.%06i seconds in the past!",
+ (int) tv_wait.tv_sec, (int) tv_wait.tv_usec);
continue;
}
+ ts_wait.tv_sec = tv_wait.tv_sec;
+ ts_wait.tv_nsec = (long) (1000 * tv_wait.tv_usec);
+
while ((loop == 0) && (nanosleep (&ts_wait, &ts_wait) == -1))
{
if (errno != EINTR)
int main (int argc, char **argv)
{
- struct sigaction sigIntAction;
- struct sigaction sigTermAction;
+ struct sigaction sig_int_action;
+ struct sigaction sig_term_action;
+ struct sigaction sig_usr1_action;
+ struct sigaction sig_pipe_action;
char *configfile = CONFIGFILE;
int test_config = 0;
+ int test_readall = 0;
const char *basedir;
#if COLLECT_DAEMON
- struct sigaction sigChldAction;
+ struct sigaction sig_chld_action;
pid_t pid;
int daemonize = 1;
#endif
+ int exit_status = 0;
/* read options */
while (1)
{
int c;
- c = getopt (argc, argv, "htC:"
+ c = getopt (argc, argv, "htTC:"
#if COLLECT_DAEMON
"fP:"
#endif
case 't':
test_config = 1;
break;
+ case 'T':
+ test_readall = 1;
+ global_option_set ("ReadThreads", "-1");
+#if COLLECT_DAEMON
+ daemonize = 0;
+#endif /* COLLECT_DAEMON */
+ break;
#if COLLECT_DAEMON
case 'P':
global_option_set ("PIDFile", optarg);
break;
#endif /* COLLECT_DAEMON */
case 'h':
+ exit_usage (0);
+ break;
default:
- exit_usage (argv[0]);
+ exit_usage (1);
} /* switch (c) */
} /* while (1) */
+ if (optind < argc)
+ exit_usage (1);
+
/*
* Read options from the config file, the environment and the command
* line (in that order, with later options overwriting previous ones in
/*
* fork off child
*/
- memset (&sigChldAction, '\0', sizeof (sigChldAction));
- sigChldAction.sa_handler = SIG_IGN;
- sigaction (SIGCHLD, &sigChldAction, NULL);
+ memset (&sig_chld_action, '\0', sizeof (sig_chld_action));
+ sig_chld_action.sa_handler = SIG_IGN;
+ sigaction (SIGCHLD, &sig_chld_action, NULL);
if (daemonize)
{
} /* if (daemonize) */
#endif /* COLLECT_DAEMON */
+ memset (&sig_pipe_action, '\0', sizeof (sig_pipe_action));
+ sig_pipe_action.sa_handler = SIG_IGN;
+ sigaction (SIGPIPE, &sig_pipe_action, NULL);
+
/*
* install signal handlers
*/
- memset (&sigIntAction, '\0', sizeof (sigIntAction));
- sigIntAction.sa_handler = sigIntHandler;
- sigaction (SIGINT, &sigIntAction, NULL);
+ memset (&sig_int_action, '\0', sizeof (sig_int_action));
+ sig_int_action.sa_handler = sig_int_handler;
+ if (0 != sigaction (SIGINT, &sig_int_action, NULL)) {
+ char errbuf[1024];
+ ERROR ("Error: Failed to install a signal handler for signal INT: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ return (1);
+ }
- memset (&sigTermAction, '\0', sizeof (sigTermAction));
- sigTermAction.sa_handler = sigTermHandler;
- sigaction (SIGTERM, &sigTermAction, NULL);
+ memset (&sig_term_action, '\0', sizeof (sig_term_action));
+ sig_term_action.sa_handler = sig_term_handler;
+ if (0 != sigaction (SIGTERM, &sig_term_action, NULL)) {
+ char errbuf[1024];
+ ERROR ("Error: Failed to install a signal handler for signal TERM: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ return (1);
+ }
+
+ memset (&sig_usr1_action, '\0', sizeof (sig_usr1_action));
+ sig_usr1_action.sa_handler = sig_usr1_handler;
+ if (0 != sigaction (SIGUSR1, &sig_usr1_action, NULL)) {
+ char errbuf[1024];
+ ERROR ("Error: Failed to install a signal handler for signal USR1: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ return (1);
+ }
/*
* run the actual loops
*/
do_init ();
- do_loop ();
+
+ if (test_readall)
+ {
+ if (plugin_read_all_once () != 0)
+ exit_status = 1;
+ }
+ else
+ {
+ INFO ("Initialization complete, entering read-loop.");
+ do_loop ();
+ }
/* close syslog */
- INFO ("Exiting normally");
+ INFO ("Exiting normally.");
do_shutdown ();
pidfile_remove ();
#endif /* COLLECT_DAEMON */
- return (0);
+ return (exit_status);
} /* int main */
projects / collectd.git / blobdiff