X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fbin%2Flttng%2Fcommands%2Fload.c;h=7f5f1a0c59ac37daae5d11d73ca909a340926ab0;hb=29bcf415306cac513618483defc4251bc49aa1c3;hp=4d38c792b82cc4e9ffe69253b04457410906eb9a;hpb=1114378362fe014288ccaab1d1fed52f7b5703f8;p=lttng-tools.git diff --git a/src/bin/lttng/commands/load.c b/src/bin/lttng/commands/load.c index 4d38c792b..7f5f1a0c5 100644 --- a/src/bin/lttng/commands/load.c +++ b/src/bin/lttng/commands/load.c @@ -1,21 +1,11 @@ /* - * Copyright (C) 2014 - Jérémie Galarneau + * Copyright (C) 2014 Jérémie Galarneau * - * 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 #include #include @@ -23,42 +13,134 @@ #include #include -#include +#include +#include +#include + #include "../command.h" -static char *opt_input_path; -static int opt_force; -static int opt_load_all; +static char *the_opt_input_path; +static char *the_opt_override_url; +static char *the_opt_override_session_name; +static int the_opt_force; +static int the_opt_load_all; -static const char *session_name; +static const char *the_session_name; + +#ifdef LTTNG_EMBED_HELP +static const char help_msg[] = +#include +; +#endif enum { OPT_HELP = 1, OPT_ALL, OPT_FORCE, + OPT_LIST_OPTIONS, }; -static struct poptOption load_opts[] = { +static struct mi_writer *the_writer; + +static struct poptOption the_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, &the_opt_input_path, 0, 0, 0}, + {"force", 'f', POPT_ARG_NONE, 0, OPT_FORCE, 0, 0}, + {"override-url", 0, POPT_ARG_STRING, &the_opt_override_url, 0, 0, 0}, + {"override-name", 0, POPT_ARG_STRING, &the_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(the_writer); + assert(session_name); + + /* Open session element */ + ret = mi_lttng_writer_open_element(the_writer, config_element_session); + if (ret) { + goto end; + } + + ret = mi_lttng_writer_write_element_string(the_writer, config_element_name, + session_name); + if (ret) { + goto end; + } + + /* Closing session element */ + ret = mi_lttng_writer_close_element(the_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(the_writer); + + if (the_opt_load_all) { + /* We use a wildcard to represent all sessions */ + session_name = "*"; + } + + /* Print load element */ + ret = mi_lttng_writer_open_element(the_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 (the_opt_input_path) { + ret = mi_lttng_writer_write_element_string(the_writer, config_element_path, + the_opt_input_path); + if (ret) { + goto end; + } + } + + /* Print override elements */ + ret = mi_lttng_writer_open_element(the_writer, mi_lttng_element_load_overrides); + if (ret) { + goto end; + } + + /* Session name override element */ + if (the_opt_override_session_name) { + ret = mi_lttng_writer_write_element_string(the_writer, + config_element_name, the_opt_override_session_name); + if (ret) { + goto end; + } + } + + /* Session url override element */ + if (the_opt_override_url) { + ret = mi_lttng_writer_write_element_string(the_writer, + mi_lttng_element_load_override_url, + the_opt_override_url); + if (ret) { + goto end; + } + } + + /* Close override and load element */ + ret = mi_lttng_close_multi_element(the_writer, 2); +end: + return ret; } /* @@ -66,47 +148,230 @@ static void usage(FILE *ofp) */ 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); + pc = poptGetContext(NULL, argc, argv, the_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; + the_opt_load_all = 1; break; + case OPT_LIST_OPTIONS: + list_cmd_options(stdout, the_load_opts); + ret = CMD_SUCCESS; + goto end; case OPT_FORCE: - opt_force = 1; + the_opt_force = 1; break; default: - usage(stderr); ret = CMD_UNDEFINED; 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."); + ret = lttng_session_daemon_alive(); + if (!ret) { + ERR("No session daemon is available"); + ret = CMD_ERROR; + goto end; + } + + if (!the_opt_load_all) { + the_session_name = poptGetArg(pc); + if (the_session_name) { + DBG2("Loading session name: %s", the_session_name); + } else { + /* Default to load_all */ + the_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) { + the_writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); + if (!the_writer) { + ret = CMD_ERROR; + goto end; + } + + /* Open command element */ + ret = mi_lttng_writer_command_open(the_writer, + mi_lttng_element_command_load); + if (ret) { + ret = CMD_ERROR; + goto end; + } + + /* Open output element */ + ret = mi_lttng_writer_open_element(the_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; + } + + /* + * Set the input url + * lttng_load_session_attr_set_input_url only suppports absolute path. + * Use realpath to resolve any relative path. + * */ + if (the_opt_input_path) { + input_path = realpath(the_opt_input_path, NULL); + if (!input_path) { + PERROR("Invalid input path"); ret = CMD_ERROR; goto end; } - DBG2("Loading session name: %s", session_name); + } 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, + the_session_name); + if (ret) { + ERR("Invalid session name"); + ret = CMD_ERROR; + goto end; } - ret = config_load_session(opt_input_path, session_name, opt_force); + /* Set the overwrite attribute */ + ret = lttng_load_session_attr_set_overwrite(session_attr, the_opt_force); + if (ret) { + ERR("Force argument could not be applied"); + ret = CMD_ERROR; + goto end; + } + + /* Set the overrides attributes if any */ + if (the_opt_override_url) { + ret = lttng_load_session_attr_set_override_url(session_attr, + the_opt_override_url); + if (ret) { + ERR("Url override is invalid"); + goto end; + } + } + + if (the_opt_override_session_name) { + if (the_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, + the_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 (the_opt_load_all) { + MSG("All sessions have been loaded successfully"); + } else if (the_session_name) { + ret = config_init((char *) the_session_name); + if (ret < 0) { + WARN("Could not set %s as the default session", + the_session_name); + } + MSG("Session %s has been loaded successfully", the_session_name); + } else { + MSG("Session has been loaded successfully"); + } + + if (the_opt_override_session_name) { + MSG("Session name overridden with %s", + the_opt_override_session_name); + } + + if (the_opt_override_url) { + MSG("Session output url overridden with %s", the_opt_override_url); + } + success = 1; + ret = CMD_SUCCESS; + } + + /* Mi Printing and closing */ + if (lttng_opt_mi) { + /* Mi print */ + ret = mi_load_print(the_session_name); + if (ret) { + ret = CMD_ERROR; + goto end; + } + + /* Close output element */ + ret = mi_lttng_writer_close_element(the_writer); + if (ret) { + ret = CMD_ERROR; + goto end; + } + + /* Success ? */ + ret = mi_lttng_writer_write_element_bool(the_writer, + mi_lttng_element_command_success, success); + if (ret) { + ret = CMD_ERROR; + goto end; + } + + /* Command element close */ + ret = mi_lttng_writer_command_close(the_writer); + if (ret) { + ret = CMD_ERROR; + goto end; + } } end: + if (the_writer && mi_lttng_writer_destroy(the_writer)) { + ERR("Failed to destroy mi lttng writer"); + } + + lttng_load_session_attr_destroy(session_attr); + free(input_path); poptFreeContext(pc); return ret; }