Major changes

[lttng-tools.git] / lttng / commands / create.c

diff --git a/lttng/commands/create.c b/lttng/commands/create.c
new file mode 100644 (file)
index 0000000..522ebc9
--- /dev/null
+++ b/lttng/commands/create.c
@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
+ *
+ * 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#define _GNU_SOURCE
+#include <popt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "cmd.h"
+#include "config.h"
+
+static char *opt_output_path;
+static char *opt_session_name;
+
+enum {
+       OPT_HELP = 1,
+};
+
+static struct poptOption long_options[] = {
+       /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
+       {"help",      'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
+       {"output",    'o', POPT_ARG_STRING, &opt_output_path, 0, 0, 0},
+       {0, 0, 0, 0, 0, 0, 0}
+};
+
+/*
+ * usage
+ */
+static void usage(FILE *ofp)
+{
+       fprintf(ofp, "usage: lttng create [options] [NAME]\n");
+       fprintf(ofp, "\n");
+       fprintf(ofp, "  -h, --help           Show this help\n");
+       fprintf(ofp, "  -o, --output PATH    Specify output path\n");
+       fprintf(ofp, "\n");
+}
+
+/*
+ *  create_session
+ *
+ *  Create a tracing session. If no name specified, a default name will be
+ *  generated.
+ */
+static int create_session()
+{
+       int ret;
+       char name[NAME_MAX];
+       char *session_name, *path = NULL, *alloc_path;
+       time_t rawtime;
+       struct tm *timeinfo;
+
+       /* Auto session name creation */
+       if (opt_session_name == NULL) {
+               time(&rawtime);
+               timeinfo = localtime(&rawtime);
+               strftime(name, sizeof(name), "auto-%Y%m%d-%H%M%S", timeinfo);
+               session_name = name;
+               DBG("Auto session name set to %s", session_name);
+       } else {
+               session_name = opt_session_name;
+       }
+
+       /* Auto output path */
+       if (opt_output_path == NULL) {
+               alloc_path = config_get_default_path();
+               if (alloc_path == NULL) {
+                       ret = CMD_FATAL;
+                       goto error;
+               }
+       } else {
+               alloc_path = opt_output_path;
+       }
+
+       path = config_generate_dir_path(alloc_path);
+       if (path == NULL) {
+               ret = CMD_FATAL;
+               goto error;
+       }
+
+       /* Init lttng session config */
+       ret = config_init(path);
+       if (ret < 0) {
+               goto error;
+       }
+
+       ret = config_add_session_name(path, session_name);
+       if (ret < 0) {
+               goto error;
+       }
+
+       ret = lttng_create_session(session_name, path);
+       if (ret < 0) {
+               goto error;
+       }
+
+       MSG("Session %s created.", session_name);
+       MSG("Working directory of created session is %s", path);
+
+       ret = CMD_SUCCESS;
+
+error:
+       if (alloc_path) {
+               free(alloc_path);
+       }
+
+       if (path) {
+               free(path);
+       }
+       return ret;
+}
+
+/*
+ *  cmd_list
+ *
+ *  The 'list <options>' first level command
+ */
+int cmd_create(int argc, const char **argv)
+{
+       int opt, ret = CMD_SUCCESS;
+       static poptContext pc;
+
+       pc = poptGetContext(NULL, argc, argv, long_options, 0);
+       poptReadDefaultConfig(pc, 0);
+
+       while ((opt = poptGetNextOpt(pc)) != -1) {
+               switch (opt) {
+               case OPT_HELP:
+                       usage(stderr);
+                       goto end;
+               default:
+                       usage(stderr);
+                       ret = CMD_UNDEFINED;
+                       goto end;
+               }
+       }
+
+       opt_session_name = (char*) poptGetArg(pc);
+
+       ret = create_session();
+
+end:
+       return ret;
+}