--- /dev/null
+/*
+ * Copyright (C) 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-only
+ *
+ */
+
+#define _LGPL_SOURCE
+#include <inttypes.h>
+#include <popt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <common/mi-lttng.h>
+#include <common/config/session-config.h>
+#include <lttng/lttng.h>
+
+#include "../command.h"
+
+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 *the_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 *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, &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;
+ LTTNG_ASSERT(the_writer);
+ LTTNG_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;
+}
+
+/*
+ * Mi print of load command
+ */
+static int mi_load_print(const char *session_name)
+{
+ int ret;
+ LTTNG_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;
+}
+
+/*
+ * The 'load <options>' first level command
+ */
+int cmd_load(int argc, const char **argv)
+{
+ 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, the_load_opts, 0);
+ poptReadDefaultConfig(pc, 0);
+
+ while ((opt = poptGetNextOpt(pc)) != -1) {
+ switch (opt) {
+ case OPT_HELP:
+ SHOW_HELP();
+ ret = CMD_SUCCESS;
+ goto end;
+ case OPT_ALL:
+ 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:
+ the_opt_force = 1;
+ break;
+ default:
+ ret = CMD_UNDEFINED;
+ goto end;
+ }
+ }
+
+ 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;
+ }
+ } 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;
+ }
+
+ /* 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));
+ 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;
+}
projects / lttng-tools.git / blobdiff