* Alvaro Barcellos <alvaro.barcellos at gmail.com>
**/
+#include "cmd.h"
#include "collectd.h"
-#include "common.h"
#include "configfile.h"
#include "plugin.h"
+#include "utils/common/common.h"
#include <netdb.h>
#include <sys/types.h>
-#include <sys/un.h>
#if HAVE_LOCALE_H
#include <locale.h>
#define COLLECTD_LOCALE "C"
#endif
-static int loop;
-
-static void *do_flush(void __attribute__((unused)) * arg) {
- INFO("Flushing all data.");
- plugin_flush(/* plugin = */ NULL,
- /* timeout = */ 0,
- /* ident = */ NULL);
- INFO("Finished flushing all data.");
- pthread_exit(NULL);
- return NULL;
-}
-
-static void sig_int_handler(int __attribute__((unused)) signal) { loop++; }
-
-static void sig_term_handler(int __attribute__((unused)) signal) { loop++; }
-
-static void sig_usr1_handler(int __attribute__((unused)) signal) {
- pthread_t thread;
- pthread_attr_t attr;
+#ifdef WIN32
+#undef COLLECT_DAEMON
+#include <unistd.h>
+#undef gethostname
+#include <locale.h>
+#include <winsock2.h>
+#endif
- /* 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);
- pthread_attr_destroy(&attr);
-}
+static int loop;
static int init_hostname(void) {
const char *str = global_option_get("Hostname");
return 0;
}
+#ifdef WIN32
+ long hostname_len = NI_MAXHOST;
+#else
long hostname_len = sysconf(_SC_HOST_NAME_MAX);
if (hostname_len == -1) {
hostname_len = NI_MAXHOST;
}
+#endif /* WIN32 */
char hostname[hostname_len];
if (gethostname(hostname, hostname_len) != 0) {
return plugin_shutdown_all();
} /* int do_shutdown */
-#if COLLECT_DAEMON
-static int pidfile_create(void) {
- FILE *fh;
- const char *file = global_option_get("PIDFile");
-
- if ((fh = fopen(file, "w")) == NULL) {
- ERROR("fopen (%s): %s", file, STRERRNO);
- return 1;
- }
-
- fprintf(fh, "%i\n", (int)getpid());
- fclose(fh);
-
- return 0;
-} /* static int pidfile_create (const char *file) */
-
-static int pidfile_remove(void) {
- const char *file = global_option_get("PIDFile");
- if (file == NULL)
- return 0;
-
- return unlink(file);
-} /* static int pidfile_remove (const char *file) */
-#endif /* COLLECT_DAEMON */
-
-#ifdef KERNEL_LINUX
-static int notify_upstart(void) {
- char const *upstart_job = getenv("UPSTART_JOB");
-
- if (upstart_job == NULL)
- return 0;
-
- if (strcmp(upstart_job, "collectd") != 0) {
- WARNING("Environment specifies unexpected UPSTART_JOB=\"%s\", expected "
- "\"collectd\". Ignoring the variable.",
- upstart_job);
- return 0;
- }
-
- NOTICE("Upstart detected, stopping now to signal readiness.");
- raise(SIGSTOP);
- unsetenv("UPSTART_JOB");
-
- return 1;
-}
-
-static int notify_systemd(void) {
- size_t su_size;
- const char *notifysocket = getenv("NOTIFY_SOCKET");
- if (notifysocket == NULL)
- return 0;
-
- if ((strlen(notifysocket) < 2) ||
- ((notifysocket[0] != '@') && (notifysocket[0] != '/'))) {
- ERROR("invalid notification socket NOTIFY_SOCKET=\"%s\": path must be "
- "absolute",
- notifysocket);
- return 0;
- }
- NOTICE("Systemd detected, trying to signal readiness.");
-
- unsetenv("NOTIFY_SOCKET");
-
- int fd;
-#if defined(SOCK_CLOEXEC)
- fd = socket(AF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC, /* protocol = */ 0);
-#else
- fd = socket(AF_UNIX, SOCK_DGRAM, /* protocol = */ 0);
-#endif
- if (fd < 0) {
- ERROR("creating UNIX socket failed: %s", STRERRNO);
- return 0;
- }
-
- struct sockaddr_un su = {0};
- su.sun_family = AF_UNIX;
- if (notifysocket[0] != '@') {
- /* regular UNIX socket */
- sstrncpy(su.sun_path, notifysocket, sizeof(su.sun_path));
- su_size = sizeof(su);
- } else {
- /* Linux abstract namespace socket: specify address as "\0foo", i.e.
- * start with a null byte. Since null bytes have no special meaning in
- * that case, we have to set su_size correctly to cover only the bytes
- * that are part of the address. */
- sstrncpy(su.sun_path, notifysocket, sizeof(su.sun_path));
- su.sun_path[0] = 0;
- su_size = sizeof(sa_family_t) + strlen(notifysocket);
- if (su_size > sizeof(su))
- su_size = sizeof(su);
- }
-
- const char buffer[] = "READY=1\n";
- if (sendto(fd, buffer, strlen(buffer), MSG_NOSIGNAL, (void *)&su,
- (socklen_t)su_size) < 0) {
- ERROR("sendto(\"%s\") failed: %s", notifysocket, STRERRNO);
- close(fd);
- return 0;
- }
-
- unsetenv("NOTIFY_SOCKET");
- close(fd);
- return 1;
-}
-#endif /* KERNEL_LINUX */
-
-struct cmdline_config {
- bool test_config;
- bool test_readall;
- bool create_basedir;
- const char *configfile;
- bool daemonize;
-};
-
static void read_cmdline(int argc, char **argv, struct cmdline_config *config) {
/* read options */
while (1) {
- int c = getopt(argc, argv, "htTC:"
+ int c = getopt(argc, argv,
+ "BhtTC:"
#if COLLECT_DAEMON
- "fP:"
+ "fP:"
#endif
- );
+ );
if (c == -1)
break;
* Also, this will automatically load modules.
*/
if (cf_read(config->configfile)) {
- fprintf(stderr, "Error: Reading the config file failed!\n"
- "Read the logs for details.\n");
+ fprintf(stderr, "Error: Parsing the config file failed!\n");
return 1;
}
return 0;
}
-int main(int argc, char **argv) {
- int exit_status = 0;
+void stop_collectd(void) { loop++; }
+struct cmdline_config init_config(int argc, char **argv) {
struct cmdline_config config = {
- .daemonize = true, .create_basedir = true, .configfile = CONFIGFILE,
+ .daemonize = true,
+ .create_basedir = true,
+ .configfile = CONFIGFILE,
};
read_cmdline(argc, argv, &config);
if (config.test_config)
- return 0;
+ exit(EXIT_SUCCESS);
if (optind < argc)
exit_usage(1);
if (configure_collectd(&config) != 0)
exit(EXIT_FAILURE);
-#if COLLECT_DAEMON
- /*
- * fork off child
- */
- struct sigaction sig_chld_action = {.sa_handler = SIG_IGN};
-
- sigaction(SIGCHLD, &sig_chld_action, NULL);
-
- /*
- * Only daemonize if we're not being supervised
- * by upstart or systemd (when using Linux).
- */
- if (config.daemonize
-#ifdef KERNEL_LINUX
- && notify_upstart() == 0 && notify_systemd() == 0
-#endif
- ) {
- pid_t pid;
- if ((pid = fork()) == -1) {
- /* error */
- fprintf(stderr, "fork: %s", STRERRNO);
- return 1;
- } else if (pid != 0) {
- /* parent */
- /* printf ("Running (PID %i)\n", pid); */
- return 0;
- }
-
- /* Detach from session */
- setsid();
-
- /* Write pidfile */
- if (pidfile_create())
- exit(2);
-
- /* close standard descriptors */
- close(2);
- close(1);
- close(0);
-
- int status = open("/dev/null", O_RDWR);
- if (status != 0) {
- ERROR("Error: Could not connect `STDIN' to `/dev/null' (status %d)",
- status);
- return 1;
- }
-
- status = dup(0);
- if (status != 1) {
- ERROR("Error: Could not connect `STDOUT' to `/dev/null' (status %d)",
- status);
- return 1;
- }
-
- status = dup(0);
- if (status != 2) {
- ERROR("Error: Could not connect `STDERR' to `/dev/null', (status %d)",
- status);
- return 1;
- }
- } /* if (config.daemonize) */
-#endif /* COLLECT_DAEMON */
-
- struct sigaction sig_pipe_action = {.sa_handler = SIG_IGN};
-
- sigaction(SIGPIPE, &sig_pipe_action, NULL);
-
- /*
- * install signal handlers
- */
- struct sigaction sig_int_action = {.sa_handler = sig_int_handler};
-
- if (sigaction(SIGINT, &sig_int_action, NULL) != 0) {
- ERROR("Error: Failed to install a signal handler for signal INT: %s",
- STRERRNO);
- return 1;
- }
-
- struct sigaction sig_term_action = {.sa_handler = sig_term_handler};
-
- if (sigaction(SIGTERM, &sig_term_action, NULL) != 0) {
- ERROR("Error: Failed to install a signal handler for signal TERM: %s",
- STRERRNO);
- return 1;
- }
-
- struct sigaction sig_usr1_action = {.sa_handler = sig_usr1_handler};
+ return config;
+}
- if (sigaction(SIGUSR1, &sig_usr1_action, NULL) != 0) {
- ERROR("Error: Failed to install a signal handler for signal USR1: %s",
- STRERRNO);
- return 1;
- }
+int run_loop(bool test_readall) {
+ int exit_status = 0;
- /*
- * run the actual loops
- */
if (do_init() != 0) {
ERROR("Error: one or more plugin init callbacks failed.");
exit_status = 1;
}
- if (config.test_readall) {
+ if (test_readall) {
if (plugin_read_all_once() != 0) {
ERROR("Error: one or more plugin read callbacks failed.");
exit_status = 1;
exit_status = 1;
}
-#if COLLECT_DAEMON
- if (config.daemonize)
- pidfile_remove();
-#endif /* COLLECT_DAEMON */
-
return exit_status;
-} /* int main */
+} /* int run_loop */
projects / collectd.git / blobdiff