/*
- * Copyright (C) 2014 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ * Copyright (C) 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2 only,
- * as published by the Free Software Foundation.
+ * SPDX-License-Identifier: GPL-2.0-only
*
- * 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.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#define _GNU_SOURCE
+#define _LGPL_SOURCE
#include <inttypes.h>
#include <popt.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
-#include <common/config/config.h>
+#include <common/mi-lttng.h>
+#include <common/config/session-config.h>
+#include <lttng/load.h>
+
#include "../command.h"
static char *opt_input_path;
+static char *opt_override_url;
+static char *opt_override_session_name;
static int opt_force;
static int opt_load_all;
static const char *session_name;
+#ifdef LTTNG_EMBED_HELP
+static const char help_msg[] =
+#include <lttng-load.1.h>
+;
+#endif
+
enum {
OPT_HELP = 1,
OPT_ALL,
OPT_FORCE,
+ OPT_LIST_OPTIONS,
};
+static struct mi_writer *writer;
+
static struct poptOption load_opts[] = {
/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
- {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
- {"all", 'a', POPT_ARG_NONE, 0, OPT_ALL, 0, 0},
- {"input-path", 'i', POPT_ARG_STRING, &opt_input_path, 0, 0, 0},
- {"force", 'f', POPT_ARG_NONE, 0, OPT_FORCE, 0, 0},
+ {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
+ {"all", 'a', POPT_ARG_NONE, 0, OPT_ALL, 0, 0},
+ {"input-path", 'i', POPT_ARG_STRING, &opt_input_path, 0, 0, 0},
+ {"force", 'f', POPT_ARG_NONE, 0, OPT_FORCE, 0, 0},
+ {"override-url", 0, POPT_ARG_STRING, &opt_override_url, 0, 0, 0},
+ {"override-name", 0, POPT_ARG_STRING, &opt_override_session_name, 0, 0, 0},
+ {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
{0, 0, 0, 0, 0, 0, 0}
};
+static int mi_partial_session(const char *session_name)
+{
+ int ret;
+ assert(writer);
+ assert(session_name);
+
+ /* Open session element */
+ ret = mi_lttng_writer_open_element(writer, config_element_session);
+ if (ret) {
+ goto end;
+ }
+
+ ret = mi_lttng_writer_write_element_string(writer, config_element_name,
+ session_name);
+ if (ret) {
+ goto end;
+ }
+
+ /* Closing session element */
+ ret = mi_lttng_writer_close_element(writer);
+end:
+ return ret;
+}
+
/*
- * usage
+ * Mi print of load command
*/
-static void usage(FILE *ofp)
+static int mi_load_print(const char *session_name)
{
- fprintf(ofp, "usage: lttng load [OPTIONS] [SESSION]\n");
- fprintf(ofp, "\n");
- fprintf(ofp, "Options:\n");
- fprintf(ofp, " -h, --help Show this help\n");
- fprintf(ofp, " -a, --all Load all sessions (default)\n");
- fprintf(ofp, " -i, --input-path Input path of the session configuration(s)\n");
- fprintf(ofp, " -f, --force Override existing session configuration(s)\n");
+ int ret;
+ assert(writer);
+
+ if (opt_load_all) {
+ /* We use a wildcard to represent all sessions */
+ session_name = "*";
+ }
+
+ /* Print load element */
+ ret = mi_lttng_writer_open_element(writer, mi_lttng_element_load);
+ if (ret) {
+ goto end;
+ }
+
+ /* Print session element */
+ ret = mi_partial_session(session_name);
+ if (ret) {
+ goto end;
+ }
+
+ /* Path element */
+ if (opt_input_path) {
+ ret = mi_lttng_writer_write_element_string(writer, config_element_path,
+ opt_input_path);
+ if (ret) {
+ goto end;
+ }
+ }
+
+ /* Print override elements */
+ ret = mi_lttng_writer_open_element(writer, mi_lttng_element_load_overrides);
+ if (ret) {
+ goto end;
+ }
+
+ /* Session name override element */
+ if (opt_override_session_name) {
+ ret = mi_lttng_writer_write_element_string(writer,
+ config_element_name, opt_override_session_name);
+ if (ret) {
+ goto end;
+ }
+ }
+
+ /* Session url override element */
+ if (opt_override_url) {
+ ret = mi_lttng_writer_write_element_string(writer,
+ mi_lttng_element_load_override_url,
+ opt_override_url);
+ if (ret) {
+ goto end;
+ }
+ }
+
+ /* Close override and load element */
+ ret = mi_lttng_close_multi_element(writer, 2);
+end:
+ return ret;
}
/*
*/
int cmd_load(int argc, const char **argv)
{
- int ret = CMD_SUCCESS;
+ int ret, success;
int opt;
poptContext pc;
+ struct lttng_load_session_attr *session_attr = NULL;
+ char *input_path = NULL;
+ const char *leftover = NULL;
pc = poptGetContext(NULL, argc, argv, load_opts, 0);
poptReadDefaultConfig(pc, 0);
while ((opt = poptGetNextOpt(pc)) != -1) {
switch (opt) {
case OPT_HELP:
- usage(stdout);
+ SHOW_HELP();
+ ret = CMD_SUCCESS;
goto end;
case OPT_ALL:
opt_load_all = 1;
break;
+ case OPT_LIST_OPTIONS:
+ list_cmd_options(stdout, load_opts);
+ ret = CMD_SUCCESS;
+ goto end;
case OPT_FORCE:
opt_force = 1;
break;
default:
- usage(stderr);
ret = CMD_UNDEFINED;
goto end;
}
}
+ ret = lttng_session_daemon_alive();
+ if (!ret) {
+ ERR("No session daemon is available");
+ ret = CMD_ERROR;
+ goto end;
+ }
+
if (!opt_load_all) {
session_name = poptGetArg(pc);
- if (!session_name) {
- ERR("A session name must be provided if the \"all\" option is not used.");
+ if (session_name) {
+ DBG2("Loading session name: %s", session_name);
+ } else {
+ /* Default to load_all */
+ opt_load_all = 1;
+ }
+ }
+
+ leftover = poptGetArg(pc);
+ if (leftover) {
+ ERR("Unknown argument: %s", leftover);
+ ret = CMD_ERROR;
+ goto end;
+ }
+
+ /* Mi check */
+ if (lttng_opt_mi) {
+ writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
+ if (!writer) {
ret = CMD_ERROR;
goto end;
}
- DBG2("Loading session name: %s", session_name);
+
+ /* Open command element */
+ ret = mi_lttng_writer_command_open(writer,
+ mi_lttng_element_command_load);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
+ }
+
+ /* Open output element */
+ ret = mi_lttng_writer_open_element(writer,
+ mi_lttng_element_command_output);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
+ }
+ }
+
+ /* Prepare load attributes */
+ session_attr = lttng_load_session_attr_create();
+ if (!session_attr) {
+ ERR("Failed to create load session attributes");
+ ret = CMD_ERROR;
+ goto end;
}
- ret = config_load_session(opt_input_path, session_name, opt_force);
+ /*
+ * Set the input url
+ * lttng_load_session_attr_set_input_url only suppports absolute path.
+ * Use realpath to resolve any relative path.
+ * */
+ if (opt_input_path) {
+ input_path = realpath(opt_input_path, NULL);
+ if (!input_path) {
+ PERROR("Invalid input path");
+ ret = CMD_ERROR;
+ goto end;
+ }
+ } else {
+ input_path = NULL;
+ }
+
+ ret = lttng_load_session_attr_set_input_url(session_attr,
+ input_path);
+ if (ret) {
+ ERR("Invalid input path");
+ ret = CMD_ERROR;
+ goto end;
+ }
+
+ /* Set the session name. NULL means all sessions should be loaded */
+ ret = lttng_load_session_attr_set_session_name(session_attr,
+ session_name);
+ if (ret) {
+ ERR("Invalid session name");
+ ret = CMD_ERROR;
+ goto end;
+ }
+
+ /* Set the overwrite attribute */
+ ret = lttng_load_session_attr_set_overwrite(session_attr, opt_force);
+ if (ret) {
+ ERR("Force argument could not be applied");
+ ret = CMD_ERROR;
+ goto end;
+ }
+
+ /* Set the overrides attributes if any */
+ if (opt_override_url) {
+ ret = lttng_load_session_attr_set_override_url(session_attr,
+ opt_override_url);
+ if (ret) {
+ ERR("Url override is invalid");
+ goto end;
+ }
+ }
+
+ if (opt_override_session_name) {
+ if (opt_load_all) {
+ ERR("Options --all and --override-name cannot be used simultaneously");
+ ret = CMD_ERROR;
+ goto end;
+ }
+ ret = lttng_load_session_attr_set_override_session_name(session_attr,
+ opt_override_session_name);
+ if (ret) {
+ ERR("Failed to set session name override");
+ ret = CMD_ERROR;
+ goto end;
+ }
+ }
+
+ ret = lttng_load_session(session_attr);
if (ret) {
ERR("%s", lttng_strerror(ret));
- ret = -ret;
+ success = 0;
+ ret = CMD_ERROR;
} else {
if (opt_load_all) {
MSG("All sessions have been loaded successfully");
- } else {
+ } else if (session_name) {
+ ret = config_init((char *) session_name);
+ if (ret < 0) {
+ WARN("Could not set %s as the default session",
+ session_name);
+ }
MSG("Session %s has been loaded successfully", session_name);
+ } else {
+ MSG("Session has been loaded successfully");
+ }
+
+ if (opt_override_session_name) {
+ MSG("Session name overridden with %s",
+ opt_override_session_name);
+ }
+
+ if (opt_override_url) {
+ MSG("Session output url overridden with %s", opt_override_url);
+ }
+ success = 1;
+ ret = CMD_SUCCESS;
+ }
+
+ /* Mi Printing and closing */
+ if (lttng_opt_mi) {
+ /* Mi print */
+ ret = mi_load_print(session_name);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
+ }
+
+ /* Close output element */
+ ret = mi_lttng_writer_close_element(writer);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
+ }
+
+ /* Success ? */
+ ret = mi_lttng_writer_write_element_bool(writer,
+ mi_lttng_element_command_success, success);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
+ }
+
+ /* Command element close */
+ ret = mi_lttng_writer_command_close(writer);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
}
}
end:
+ if (writer && mi_lttng_writer_destroy(writer)) {
+ ERR("Failed to destroy mi lttng writer");
+ }
+
+ lttng_load_session_attr_destroy(session_attr);
+ free(input_path);
poptFreeContext(pc);
return ret;
}
projects / lttng-tools.git / blobdiff