* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#define _GNU_SOURCE
+#define _LGPL_SOURCE
+#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <limits.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <signal.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <inttypes.h>
+#include <unistd.h>
#include <common/error.h>
#include <common/utils.h>
+#include <common/defaults.h>
#include "conf.h"
#include "utils.h"
#include "command.h"
-/*
- * get_session_name
- *
- * Return allocated string with the session name found in the config
- * directory.
- */
-char *get_session_name(void)
+static const char *str_kernel = "Kernel";
+static const char *str_ust = "UST";
+static const char *str_jul = "JUL";
+static const char *str_log4j = "LOG4J";
+static const char *str_python = "Python";
+
+static
+char *_get_session_name(int quiet)
{
char *path, *session_name = NULL;
}
/* Get session name from config */
- session_name = config_read_session_name(path);
+ session_name = quiet ? config_read_session_name_quiet(path) :
+ config_read_session_name(path);
if (session_name == NULL) {
goto error;
}
return NULL;
}
+/*
+ * get_session_name
+ *
+ * Return allocated string with the session name found in the config
+ * directory.
+ */
+char *get_session_name(void)
+{
+ return _get_session_name(0);
+}
+
+/*
+ * get_session_name_quiet (no warnings/errors emitted)
+ *
+ * Return allocated string with the session name found in the config
+ * directory.
+ */
+char *get_session_name_quiet(void)
+{
+ return _get_session_name(1);
+}
+
/*
* list_commands
*
return fls_ulong(x - 1);
}
+
+const char *get_domain_str(enum lttng_domain_type domain)
+{
+ const char *str_dom;
+
+ switch (domain) {
+ case LTTNG_DOMAIN_KERNEL:
+ str_dom = str_kernel;
+ break;
+ case LTTNG_DOMAIN_UST:
+ str_dom = str_ust;
+ break;
+ case LTTNG_DOMAIN_JUL:
+ str_dom = str_jul;
+ break;
+ case LTTNG_DOMAIN_LOG4J:
+ str_dom = str_log4j;
+ break;
+ case LTTNG_DOMAIN_PYTHON:
+ str_dom = str_python;
+ break;
+ default:
+ /* Should not have an unknown domain or else define it. */
+ assert(0);
+ }
+
+ return str_dom;
+}
+
+/*
+ * Spawn a lttng relayd daemon by forking and execv.
+ */
+int spawn_relayd(const char *pathname, int port)
+{
+ int ret = 0;
+ pid_t pid;
+ char url[255];
+
+ if (!port) {
+ port = DEFAULT_NETWORK_VIEWER_PORT;
+ }
+
+ ret = snprintf(url, sizeof(url), "tcp://localhost:%d", port);
+ if (ret < 0) {
+ goto end;
+ }
+
+ MSG("Spawning a relayd daemon");
+ pid = fork();
+ if (pid == 0) {
+ /*
+ * Spawn session daemon and tell
+ * it to signal us when ready.
+ */
+ execlp(pathname, "lttng-relayd", "-L", url, NULL);
+ /* execlp only returns if error happened */
+ if (errno == ENOENT) {
+ ERR("No relayd found. Use --relayd-path.");
+ } else {
+ PERROR("execlp");
+ }
+ kill(getppid(), SIGTERM); /* wake parent */
+ exit(EXIT_FAILURE);
+ } else if (pid > 0) {
+ goto end;
+ } else {
+ PERROR("fork");
+ ret = -1;
+ goto end;
+ }
+
+end:
+ return ret;
+}
+
+/*
+ * Check if relayd is alive.
+ *
+ * Return 1 if found else 0 if NOT found. Negative value on error.
+ */
+int check_relayd(void)
+{
+ int ret, fd;
+ struct sockaddr_in sin;
+
+ fd = socket(AF_INET, SOCK_STREAM, 0);
+ if (fd < 0) {
+ PERROR("socket check relayd");
+ ret = -1;
+ goto error_socket;
+ }
+
+ sin.sin_family = AF_INET;
+ sin.sin_port = htons(DEFAULT_NETWORK_VIEWER_PORT);
+ ret = inet_pton(sin.sin_family, "127.0.0.1", &sin.sin_addr);
+ if (ret < 1) {
+ PERROR("inet_pton check relayd");
+ ret = -1;
+ goto error;
+ }
+
+ /*
+ * A successful connect means the relayd exists thus returning 0 else a
+ * negative value means it does NOT exists.
+ */
+ ret = connect(fd, &sin, sizeof(sin));
+ if (ret < 0) {
+ /* Not found. */
+ ret = 0;
+ } else {
+ /* Already spawned. */
+ ret = 1;
+ }
+
+error:
+ if (close(fd) < 0) {
+ PERROR("close relayd fd");
+ }
+error_socket:
+ return ret;
+}
+
+int print_missing_or_multiple_domains(unsigned int sum)
+{
+ int ret = 0;
+
+ if (sum == 0) {
+ ERR("Please specify a domain (-k/-u/-j).");
+ ret = -1;
+ } else if (sum > 1) {
+ ERR("Multiple domains specified.");
+ ret = -1;
+ }
+
+ return ret;
+}
+
+/*
+ * Get the discarded events and lost packet counts.
+ */
+void print_session_stats(const char *session_name)
+{
+ int count, nb_domains, domain_idx, channel_idx;
+ struct lttng_domain *domains;
+ struct lttng_channel *channels;
+ uint64_t discarded_total = 0, lost_total = 0;
+
+ nb_domains = lttng_list_domains(session_name, &domains);
+ if (nb_domains < 0) {
+ goto end;
+ }
+ for (domain_idx = 0; domain_idx < nb_domains; domain_idx++) {
+ struct lttng_handle *handle = lttng_create_handle(session_name,
+ &domains[domain_idx]);
+
+ if (!handle) {
+ ERR("Failed to create session handle while printing session stats.");
+ goto end;
+ }
+
+ count = lttng_list_channels(handle, &channels);
+ for (channel_idx = 0; channel_idx < count; channel_idx++) {
+ int ret;
+ uint64_t discarded = 0, lost = 0;
+ struct lttng_channel *channel = &channels[channel_idx];
+
+ ret = lttng_channel_get_discarded_event_count(channel,
+ &discarded);
+ if (ret) {
+ ERR("Failed to retrieve discarded event count from channel %s",
+ channel->name);
+ }
+
+ ret = lttng_channel_get_lost_packet_count(channel,
+ &lost);
+ if (ret) {
+ ERR("Failed to retrieve lost packet count from channel %s",
+ channel->name);
+ }
+
+ discarded_total += discarded;
+ lost_total += lost;
+ }
+ lttng_destroy_handle(handle);
+ }
+ if (discarded_total > 0) {
+ MSG("[warning] %" PRIu64 " events discarded, please refer to "
+ "the documentation on channel configuration.",
+ discarded_total);
+ }
+ if (lost_total > 0) {
+ MSG("[warning] %" PRIu64 " packets lost, please refer to "
+ "the documentation on channel configuration.",
+ lost_total);
+ }
+
+end:
+ return;
+}
+
+int show_cmd_man_page(const char *cmd_name)
+{
+ int ret;
+ char page_name[32];
+
+ ret = sprintf(page_name, "lttng-%s", cmd_name);
+ assert(ret > 0 && ret < 32);
+
+ return utils_show_man_page(1, page_name);
+}
projects / lttng-tools.git / blobdiff