X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=blobdiff_plain;f=src%2Fcli%2Fbabeltrace2.c;h=c4b7c29fc1605bc67910bcbdb98608c9c872a309;hp=e32e1a0930f63160c3dbff47f2cea5305dd77dbc;hb=0235b0db7de5bcacdb3650c92461f2ce5eb2143d;hpb=a91cb83e0e5536c14328ddef0ba2b571063dbbdd

diff --git a/src/cli/babeltrace2.c b/src/cli/babeltrace2.c
index e32e1a09..c4b7c29f 100644
--- a/src/cli/babeltrace2.c
+++ b/src/cli/babeltrace2.c
@@ -1,25 +1,7 @@
 /*
- * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
- *
- * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
+ * SPDX-License-Identifier: MIT
  *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
  */
 
 #define BT_LOG_TAG "CLI"
@@ -27,6 +9,8 @@
 
 #include <babeltrace2/babeltrace.h>
 #include "common/common.h"
+#include "string-format/format-error.h"
+#include "string-format/format-plugin-comp-cls-name.h"
 #include <unistd.h>
 #include <stdlib.h>
 #include <string.h>
@@ -45,6 +29,27 @@
 #define ENV_BABELTRACE_WARN_COMMAND_NAME_DIRECTORY_CLASH "BABELTRACE_CLI_WARN_COMMAND_NAME_DIRECTORY_CLASH"
 #define NSEC_PER_SEC	1000000000LL
 
+enum bt_cmd_status {
+	BT_CMD_STATUS_OK	    = 0,
+	BT_CMD_STATUS_ERROR	    = -1,
+	BT_CMD_STATUS_INTERRUPTED   = -2,
+};
+
+static
+const char *bt_cmd_status_string(enum bt_cmd_status cmd_status)
+{
+	switch (cmd_status) {
+	case BT_CMD_STATUS_OK:
+		return "OK";
+	case BT_CMD_STATUS_ERROR:
+		return "ERROR";
+	case BT_CMD_STATUS_INTERRUPTED:
+		return "INTERRUPTED";
+	default:
+		bt_common_abort();
+	}
+}
+
 /* Application's interrupter (owned by this) */
 static bt_interrupter *the_interrupter;
 
@@ -123,14 +128,13 @@ const void *find_component_class_from_plugin(const char *plugin_name,
 	BT_LOGI("Finding component class: plugin-name=\"%s\", "
 		"comp-cls-name=\"%s\"", plugin_name, comp_class_name);
 
-	plugin = find_loaded_plugin(plugin_name);
+	plugin = borrow_loaded_plugin_by_name(plugin_name);
 	if (!plugin) {
 		goto end;
 	}
 
 	comp_class = plugin_borrow_comp_cls_func(plugin, comp_class_name);
 	bt_object_get_ref(comp_class);
-	BT_PLUGIN_PUT_REF_AND_RESET(plugin);
 
 end:
 	if (comp_class) {
@@ -193,7 +197,7 @@ const bt_component_class *find_component_class(const char *plugin_name,
 		comp_cls = bt_component_class_sink_as_component_class_const(find_sink_component_class(plugin_name, comp_class_name));
 		break;
 	default:
-		abort();
+		bt_common_abort();
 	}
 
 	return comp_cls;
@@ -209,109 +213,60 @@ void print_indent(FILE *fp, size_t indent)
 	}
 }
 
-static
-const char *component_type_str(bt_component_class_type type)
-{
-	switch (type) {
-	case BT_COMPONENT_CLASS_TYPE_SOURCE:
-		return "source";
-	case BT_COMPONENT_CLASS_TYPE_SINK:
-		return "sink";
-	case BT_COMPONENT_CLASS_TYPE_FILTER:
-		return "filter";
-	default:
-		return "(unknown)";
-	}
-}
-
-static
-void print_plugin_comp_cls_opt(FILE *fh, const char *plugin_name,
-		const char *comp_cls_name, bt_component_class_type type)
-{
-	GString *shell_plugin_name = NULL;
-	GString *shell_comp_cls_name = NULL;
-
-	if (plugin_name) {
-		shell_plugin_name = bt_common_shell_quote(plugin_name, false);
-		if (!shell_plugin_name) {
-			goto end;
-		}
-	}
-
-	shell_comp_cls_name = bt_common_shell_quote(comp_cls_name, false);
-	if (!shell_comp_cls_name) {
-		goto end;
-	}
-
-	fprintf(fh, "'%s%s%s%s",
-		bt_common_color_bold(),
-		bt_common_color_fg_cyan(),
-		component_type_str(type),
-		bt_common_color_fg_default());
-
-	if (shell_plugin_name) {
-		fprintf(fh, ".%s%s%s",
-			bt_common_color_fg_blue(),
-			shell_plugin_name->str,
-			bt_common_color_fg_default());
-	}
-
-	fprintf(fh, ".%s%s%s'",
-		bt_common_color_fg_yellow(),
-		shell_comp_cls_name->str,
-		bt_common_color_reset());
-
-end:
-	if (shell_plugin_name) {
-		g_string_free(shell_plugin_name, TRUE);
-	}
-
-	if (shell_comp_cls_name) {
-		g_string_free(shell_comp_cls_name, TRUE);
-	}
-}
-
 static
 void print_value(FILE *, const bt_value *, size_t);
 
 static
 void print_value_rec(FILE *, const bt_value *, size_t);
 
-struct print_map_value_data {
-	size_t indent;
-	FILE *fp;
-};
-
 static
-bt_bool print_map_value(const char *key, const bt_value *object,
-		void *data)
+void print_map_value(const char *key, const bt_value *object, FILE *fp,
+		size_t indent)
 {
-	struct print_map_value_data *print_map_value_data = data;
-
-	print_indent(print_map_value_data->fp, print_map_value_data->indent);
-	fprintf(print_map_value_data->fp, "%s: ", key);
+	print_indent(fp, indent);
+	fprintf(fp, "%s: ", key);
 	BT_ASSERT(object);
 
 	if (bt_value_is_array(object) &&
 			bt_value_array_is_empty(object)) {
-		fprintf(print_map_value_data->fp, "[ ]\n");
-		return true;
+		fprintf(fp, "[ ]\n");
+		goto end;
 	}
 
 	if (bt_value_is_map(object) &&
 			bt_value_map_is_empty(object)) {
-		fprintf(print_map_value_data->fp, "{ }\n");
-		return true;
+		fprintf(fp, "{ }\n");
+		goto end;
 	}
 
 	if (bt_value_is_array(object) ||
 			bt_value_is_map(object)) {
-		fprintf(print_map_value_data->fp, "\n");
+		fprintf(fp, "\n");
 	}
 
-	print_value_rec(print_map_value_data->fp, object,
-		print_map_value_data->indent + 2);
-	return BT_TRUE;
+	print_value_rec(fp, object, indent + 2);
+
+end:
+	return;
+}
+
+static
+bt_value_map_foreach_entry_const_func_status collect_map_keys(
+		const char *key, const bt_value *object, void *data)
+{
+	GPtrArray *map_keys = data;
+
+	g_ptr_array_add(map_keys, (gpointer *) key);
+
+	return BT_VALUE_MAP_FOREACH_ENTRY_CONST_FUNC_STATUS_OK;
+}
+
+static
+gint g_ptr_array_sort_strings(gconstpointer a, gconstpointer b) {
+	const char *s1 = *((const char **) a);
+	const char *s2 = *((const char **) b);
+
+	return g_strcmp0(s1, s2);
 }
 
 static
@@ -322,12 +277,9 @@ void print_value_rec(FILE *fp, const bt_value *value, size_t indent)
 	uint64_t uint_val;
 	double dbl_val;
 	const char *str_val;
-	int size;
-	int i;
+	GPtrArray *map_keys = NULL;
 
-	if (!value) {
-		return;
-	}
+	BT_ASSERT(value);
 
 	switch (bt_value_get_type(value)) {
 	case BT_VALUE_TYPE_NULL:
@@ -337,39 +289,37 @@ void print_value_rec(FILE *fp, const bt_value *value, size_t indent)
 	case BT_VALUE_TYPE_BOOL:
 		bool_val = bt_value_bool_get(value);
 		fprintf(fp, "%s%s%s%s\n", bt_common_color_bold(),
-			bt_common_color_fg_cyan(), bool_val ? "yes" : "no",
+			bt_common_color_fg_bright_cyan(), bool_val ? "yes" : "no",
 			bt_common_color_reset());
 		break;
 	case BT_VALUE_TYPE_UNSIGNED_INTEGER:
 		uint_val = bt_value_integer_unsigned_get(value);
 		fprintf(fp, "%s%s%" PRIu64 "%s\n", bt_common_color_bold(),
-			bt_common_color_fg_red(), uint_val,
+			bt_common_color_fg_bright_red(), uint_val,
 			bt_common_color_reset());
 		break;
 	case BT_VALUE_TYPE_SIGNED_INTEGER:
 		int_val = bt_value_integer_signed_get(value);
 		fprintf(fp, "%s%s%" PRId64 "%s\n", bt_common_color_bold(),
-			bt_common_color_fg_red(), int_val,
+			bt_common_color_fg_bright_red(), int_val,
 			bt_common_color_reset());
 		break;
 	case BT_VALUE_TYPE_REAL:
 		dbl_val = bt_value_real_get(value);
 		fprintf(fp, "%s%s%lf%s\n", bt_common_color_bold(),
-			bt_common_color_fg_red(), dbl_val,
+			bt_common_color_fg_bright_red(), dbl_val,
 			bt_common_color_reset());
 		break;
 	case BT_VALUE_TYPE_STRING:
 		str_val = bt_value_string_get(value);
 		fprintf(fp, "%s%s%s%s\n", bt_common_color_bold(),
-			bt_common_color_fg_green(), str_val,
+			bt_common_color_fg_bright_green(), str_val,
 			bt_common_color_reset());
 		break;
 	case BT_VALUE_TYPE_ARRAY:
+	{
+		uint64_t i, size;
 		size = bt_value_array_get_length(value);
-		if (size < 0) {
-			goto error;
-		}
-
 		if (size == 0) {
 			print_indent(fp, indent);
 			fprintf(fp, "[ ]\n");
@@ -381,9 +331,6 @@ void print_value_rec(FILE *fp, const bt_value *value, size_t indent)
 				bt_value_array_borrow_element_by_index_const(
 					value, i);
 
-			if (!element) {
-				goto error;
-			}
 			print_indent(fp, indent);
 			fprintf(fp, "- ");
 
@@ -407,12 +354,11 @@ void print_value_rec(FILE *fp, const bt_value *value, size_t indent)
 			print_value_rec(fp, element, indent + 2);
 		}
 		break;
+	}
 	case BT_VALUE_TYPE_MAP:
 	{
-		struct print_map_value_data data = {
-			.indent = indent,
-			.fp = fp,
-		};
+		guint i;
+		bt_value_map_foreach_entry_const_status foreach_status;
 
 		if (bt_value_map_is_empty(value)) {
 			print_indent(fp, indent);
@@ -420,17 +366,48 @@ void print_value_rec(FILE *fp, const bt_value *value, size_t indent)
 			break;
 		}
 
-		bt_value_map_foreach_entry_const(value, print_map_value, &data);
+		map_keys = g_ptr_array_new();
+		if (!map_keys) {
+			BT_CLI_LOGE_APPEND_CAUSE("Failed to allocated on GPtrArray.");
+			goto end;
+		}
+
+		/*
+		 * We want to print the map entries in a stable order.  Collect
+		 * all the map's keys in a GPtrArray, sort it, then print the
+		 * entries in that order.
+		 */
+		foreach_status = bt_value_map_foreach_entry_const(value,
+			collect_map_keys, map_keys);
+		if (foreach_status != BT_VALUE_MAP_FOREACH_ENTRY_CONST_STATUS_OK) {
+			BT_CLI_LOGE_APPEND_CAUSE("Failed to iterator on map value.");
+			goto end;
+		}
+
+		g_ptr_array_sort(map_keys, g_ptr_array_sort_strings);
+
+		for (i = 0; i < map_keys->len; i++) {
+			const char *map_key = g_ptr_array_index(map_keys, i);
+			const bt_value *map_value;
+
+			map_value = bt_value_map_borrow_entry_value_const(value, map_key);
+			BT_ASSERT(map_value);
+
+			print_map_value(map_key, map_value, fp, indent);
+		}
+
 		break;
 	}
 	default:
-		abort();
+		bt_common_abort();
 	}
-	return;
 
-error:
-	BT_LOGE("Error printing value of type %s.",
-		bt_common_value_type_string(bt_value_get_type(value)));
+	goto end;
+
+end:
+	if (map_keys) {
+		g_ptr_array_free(map_keys, TRUE);
+	}
 }
 
 static
@@ -446,11 +423,16 @@ void print_value(FILE *fp, const bt_value *value, size_t indent)
 static
 void print_bt_config_component(struct bt_config_component *bt_config_component)
 {
-	fprintf(stderr, "    ");
-	print_plugin_comp_cls_opt(stderr, bt_config_component->plugin_name->str,
+	gchar *comp_cls_str;
+
+	comp_cls_str = format_plugin_comp_cls_opt(
+		bt_config_component->plugin_name->str,
 		bt_config_component->comp_cls_name->str,
-		bt_config_component->type);
-	fprintf(stderr, ":\n");
+		bt_config_component->type,
+		BT_COMMON_COLOR_WHEN_AUTO);
+	BT_ASSERT(comp_cls_str);
+
+	fprintf(stderr, "    %s:\n", comp_cls_str);
 
 	if (bt_config_component->instance_name->len > 0) {
 		fprintf(stderr, "      Name: %s\n",
@@ -459,6 +441,8 @@ void print_bt_config_component(struct bt_config_component *bt_config_component)
 
 	fprintf(stderr, "      Parameters:\n");
 	print_value(stderr, bt_config_component->params, 8);
+
+	g_free(comp_cls_str);
 }
 
 static
@@ -580,7 +564,7 @@ void print_cfg(struct bt_config *cfg)
 		print_cfg_print_lttng_live_sessions(cfg);
 		break;
 	default:
-		abort();
+		bt_common_abort();
 	}
 }
 
@@ -604,7 +588,7 @@ void print_plugin_info(const bt_plugin *plugin)
 	version_avail = bt_plugin_get_version(plugin, &major, &minor,
 		&patch, &extra);
 	printf("%s%s%s%s:\n", bt_common_color_bold(),
-		bt_common_color_fg_blue(), plugin_name,
+		bt_common_color_fg_bright_blue(), plugin_name,
 		bt_common_color_reset());
 	if (path) {
 		printf("  %sPath%s: %s\n", bt_common_color_bold(),
@@ -636,9 +620,10 @@ void print_plugin_info(const bt_plugin *plugin)
 }
 
 static
-int cmd_query(struct bt_config *cfg)
+enum bt_cmd_status cmd_query(struct bt_config *cfg)
 {
 	int ret = 0;
+	enum bt_cmd_status cmd_status;
 	const bt_component_class *comp_cls = NULL;
 	const bt_value *results = NULL;
 	const char *fail_reason = NULL;
@@ -654,35 +639,35 @@ int cmd_query(struct bt_config *cfg)
 			cfg->cmd_data.query.cfg_component->plugin_name->str,
 			cfg->cmd_data.query.cfg_component->comp_cls_name->str,
 			cfg->cmd_data.query.cfg_component->type);
-		ret = -1;
-		goto end;
+		goto error;
 	}
 
 	ret = query(cfg, comp_cls, cfg->cmd_data.query.object->str,
 		cfg->cmd_data.query.cfg_component->params,
 		&results, &fail_reason);
 	if (ret) {
-		goto failed;
+		BT_CLI_LOGE_APPEND_CAUSE(
+			"Failed to query component class: %s: plugin-name=\"%s\", "
+			"comp-cls-name=\"%s\", comp-cls-type=%d "
+			"object=\"%s\"", fail_reason,
+			cfg->cmd_data.query.cfg_component->plugin_name->str,
+			cfg->cmd_data.query.cfg_component->comp_cls_name->str,
+			cfg->cmd_data.query.cfg_component->type,
+			cfg->cmd_data.query.object->str);
+		goto error;
 	}
 
 	print_value(stdout, results, 0);
+	cmd_status = BT_CMD_STATUS_OK;
 	goto end;
 
-failed:
-	BT_CLI_LOGE_APPEND_CAUSE(
-		"Failed to query component class: %s: plugin-name=\"%s\", "
-		"comp-cls-name=\"%s\", comp-cls-type=%d "
-		"object=\"%s\"", fail_reason,
-		cfg->cmd_data.query.cfg_component->plugin_name->str,
-		cfg->cmd_data.query.cfg_component->comp_cls_name->str,
-		cfg->cmd_data.query.cfg_component->type,
-		cfg->cmd_data.query.object->str);
-	ret = -1;
+error:
+	cmd_status = BT_CMD_STATUS_ERROR;
 
 end:
 	bt_component_class_put_ref(comp_cls);
 	bt_value_put_ref(results);
-	return ret;
+	return cmd_status;
 }
 
 static
@@ -697,9 +682,13 @@ void print_component_class_help(const char *plugin_name,
 		bt_component_class_get_help(comp_cls);
 	bt_component_class_type type =
 		bt_component_class_get_type(comp_cls);
+	gchar *comp_cls_str;
 
-	print_plugin_comp_cls_opt(stdout, plugin_name, comp_class_name, type);
-	printf("\n");
+	comp_cls_str = format_plugin_comp_cls_opt(plugin_name, comp_class_name,
+		type, BT_COMMON_COLOR_WHEN_AUTO);
+	BT_ASSERT(comp_cls_str);
+
+	printf("%s\n", comp_cls_str);
 	printf("  %sDescription%s: %s\n", bt_common_color_bold(),
 		bt_common_color_reset(),
 		comp_class_description ? comp_class_description : "(None)");
@@ -707,22 +696,23 @@ void print_component_class_help(const char *plugin_name,
 	if (comp_class_help) {
 		printf("\n%s\n", comp_class_help);
 	}
+
+	g_free(comp_cls_str);
 }
 
 static
-int cmd_help(struct bt_config *cfg)
+enum bt_cmd_status cmd_help(struct bt_config *cfg)
 {
-	int ret = 0;
+	enum bt_cmd_status cmd_status;
 	const bt_plugin *plugin = NULL;
 	const bt_component_class *needed_comp_cls = NULL;
 
-	plugin = find_loaded_plugin(cfg->cmd_data.help.cfg_component->plugin_name->str);
+	plugin = borrow_loaded_plugin_by_name(cfg->cmd_data.help.cfg_component->plugin_name->str);
 	if (!plugin) {
 		BT_CLI_LOGE_APPEND_CAUSE(
 			"Cannot find plugin: plugin-name=\"%s\"",
 			cfg->cmd_data.help.cfg_component->plugin_name->str);
-		ret = -1;
-		goto end;
+		goto error;
 	}
 
 	print_plugin_info(plugin);
@@ -741,6 +731,7 @@ int cmd_help(struct bt_config *cfg)
 
 	if (strlen(cfg->cmd_data.help.cfg_component->comp_cls_name->str) == 0) {
 		/* Plugin help only */
+		cmd_status = BT_CMD_STATUS_OK;
 		goto end;
 	}
 
@@ -755,19 +746,22 @@ int cmd_help(struct bt_config *cfg)
 			cfg->cmd_data.help.cfg_component->plugin_name->str,
 			cfg->cmd_data.help.cfg_component->comp_cls_name->str,
 			cfg->cmd_data.help.cfg_component->type);
-		ret = -1;
-		goto end;
+		goto error;
 	}
 
 	printf("\n");
 	print_component_class_help(
 		cfg->cmd_data.help.cfg_component->plugin_name->str,
 		needed_comp_cls);
+	cmd_status = BT_CMD_STATUS_OK;
+	goto end;
+
+error:
+	cmd_status = BT_CMD_STATUS_ERROR;
 
 end:
 	bt_component_class_put_ref(needed_comp_cls);
-	bt_plugin_put_ref(plugin);
-	return ret;
+	return cmd_status;
 }
 
 typedef void *(* plugin_borrow_comp_cls_by_index_func_t)(const bt_plugin *,
@@ -775,12 +769,14 @@ typedef void *(* plugin_borrow_comp_cls_by_index_func_t)(const bt_plugin *,
 typedef const bt_component_class *(* spec_comp_cls_borrow_comp_cls_func_t)(
 	void *);
 
+static
 void cmd_list_plugins_print_component_classes(const bt_plugin *plugin,
 		const char *cc_type_name, uint64_t count,
 		plugin_borrow_comp_cls_by_index_func_t borrow_comp_cls_by_index_func,
 		spec_comp_cls_borrow_comp_cls_func_t spec_comp_cls_borrow_comp_cls_func)
 {
 	uint64_t i;
+	gchar *comp_cls_str = NULL;
 
 	if (count == 0) {
 		printf("  %s%s component classes%s: (none)\n",
@@ -806,10 +802,11 @@ void cmd_list_plugins_print_component_classes(const bt_plugin *plugin,
 		bt_component_class_type type =
 			bt_component_class_get_type(comp_class);
 
-		printf("    ");
-		print_plugin_comp_cls_opt(stdout,
-			bt_plugin_get_name(plugin), comp_class_name,
-			type);
+		g_free(comp_cls_str);
+		comp_cls_str = format_plugin_comp_cls_opt(
+			bt_plugin_get_name(plugin), comp_class_name, type,
+			BT_COMMON_COLOR_WHEN_AUTO);
+		printf("    %s", comp_cls_str);
 
 		if (comp_class_description) {
 			printf(": %s", comp_class_description);
@@ -819,13 +816,12 @@ void cmd_list_plugins_print_component_classes(const bt_plugin *plugin,
 	}
 
 end:
-	return;
+	g_free(comp_cls_str);
 }
 
 static
-int cmd_list_plugins(struct bt_config *cfg)
+enum bt_cmd_status cmd_list_plugins(struct bt_config *cfg)
 {
-	int ret = 0;
 	int plugins_count, component_classes_count = 0, i;
 
 	printf("From the following plugin paths:\n\n");
@@ -838,7 +834,7 @@ int cmd_list_plugins(struct bt_config *cfg)
 	}
 
 	for (i = 0; i < plugins_count; i++) {
-		const bt_plugin *plugin = borrow_loaded_plugin(i);
+		const bt_plugin *plugin = borrow_loaded_plugin_by_index(i);
 
 		component_classes_count +=
 			bt_plugin_get_source_component_class_count(plugin) +
@@ -855,7 +851,7 @@ int cmd_list_plugins(struct bt_config *cfg)
 		bt_common_color_reset());
 
 	for (i = 0; i < plugins_count; i++) {
-		const bt_plugin *plugin = borrow_loaded_plugin(i);
+		const bt_plugin *plugin = borrow_loaded_plugin_by_index(i);
 
 		printf("\n");
 		print_plugin_info(plugin);
@@ -880,13 +876,14 @@ int cmd_list_plugins(struct bt_config *cfg)
 	}
 
 end:
-	return ret;
+	return BT_CMD_STATUS_OK;
 }
 
 static
-int cmd_print_lttng_live_sessions(struct bt_config *cfg)
+enum bt_cmd_status cmd_print_lttng_live_sessions(struct bt_config *cfg)
 {
 	int ret = 0;
+	enum bt_cmd_status cmd_status;
 	const bt_component_class *comp_cls = NULL;
 	const bt_value *results = NULL;
 	bt_value *params = NULL;
@@ -896,7 +893,7 @@ int cmd_print_lttng_live_sessions(struct bt_config *cfg)
 	static const char * const comp_cls_name = "lttng-live";
 	static const bt_component_class_type comp_cls_type =
 		BT_COMPONENT_CLASS_TYPE_SOURCE;
-	int64_t array_size, i;
+	uint64_t array_size, i;
 	const char *fail_reason = NULL;
 	FILE *out_stream = stdout;
 
@@ -926,7 +923,9 @@ int cmd_print_lttng_live_sessions(struct bt_config *cfg)
 	ret = query(cfg, comp_cls, "sessions", params,
 		    &results, &fail_reason);
 	if (ret) {
-		goto failed;
+		BT_CLI_LOGE_APPEND_CAUSE("Failed to query `sessions` object: %s",
+			fail_reason);
+		goto error;
 	}
 
 	BT_ASSERT(results);
@@ -942,7 +941,6 @@ int cmd_print_lttng_live_sessions(struct bt_config *cfg)
 			fopen(cfg->cmd_data.print_lttng_live_sessions.output_path->str,
 				"w");
 		if (!out_stream) {
-			ret = -1;
 			BT_LOGE_ERRNO("Cannot open file for writing",
 				": path=\"%s\"",
 				cfg->cmd_data.print_lttng_live_sessions.output_path->str);
@@ -950,7 +948,7 @@ int cmd_print_lttng_live_sessions(struct bt_config *cfg)
 				"Babeltrace CLI",
 				"Cannot open file for writing: path=\"%s\"",
 				cfg->cmd_data.print_lttng_live_sessions.output_path->str);
-			goto end;
+			goto error;
 		}
 	}
 
@@ -960,10 +958,6 @@ int cmd_print_lttng_live_sessions(struct bt_config *cfg)
 		int64_t timer_us, streams, clients;
 
 		map = bt_value_array_borrow_element_by_index_const(results, i);
-		if (!map) {
-			BT_CLI_LOGE_APPEND_CAUSE("Unexpected empty array entry.");
-			goto error;
-		}
 		if (!bt_value_is_map(map)) {
 			BT_CLI_LOGE_APPEND_CAUSE("Unexpected entry type.");
 			goto error;
@@ -1001,14 +995,11 @@ int cmd_print_lttng_live_sessions(struct bt_config *cfg)
 		fprintf(out_stream, "%" PRIu64 " client(s) connected)\n", clients);
 	}
 
+	cmd_status = BT_CMD_STATUS_OK;
 	goto end;
 
-failed:
-	BT_CLI_LOGE_APPEND_CAUSE("Failed to query `sessions` object: %s",
-		fail_reason);
-
 error:
-	ret = -1;
+	cmd_status = BT_CMD_STATUS_ERROR;
 
 end:
 	bt_value_put_ref(results);
@@ -1025,13 +1016,14 @@ end:
 		}
 	}
 
-	return ret;
+	return cmd_status;
 }
 
 static
-int cmd_print_ctf_metadata(struct bt_config *cfg)
+enum bt_cmd_status cmd_print_ctf_metadata(struct bt_config *cfg)
 {
 	int ret = 0;
+	enum bt_cmd_status cmd_status;
 	const bt_component_class *comp_cls = NULL;
 	const bt_value *results = NULL;
 	bt_value *params = NULL;
@@ -1053,27 +1045,26 @@ int cmd_print_ctf_metadata(struct bt_config *cfg)
 			"comp-cls-name=\"%s\", comp-cls-type=%d",
 			plugin_name, comp_cls_name,
 			BT_COMPONENT_CLASS_TYPE_SOURCE);
-		ret = -1;
-		goto end;
+		goto error;
 	}
 
 	params = bt_value_map_create();
 	if (!params) {
-		ret = -1;
-		goto end;
+		goto error;
 	}
 
 	ret = bt_value_map_insert_string_entry(params, "path",
 		cfg->cmd_data.print_ctf_metadata.path->str);
 	if (ret) {
-		ret = -1;
-		goto end;
+		goto error;
 	}
 
 	ret = query(cfg, comp_cls, "metadata-info",
 		params, &results, &fail_reason);
 	if (ret) {
-		goto failed;
+		BT_CLI_LOGE_APPEND_CAUSE(
+			"Failed to query `metadata-info` object: %s", fail_reason);
+		goto error;
 	}
 
 	metadata_text_value = bt_value_map_borrow_entry_value_const(results,
@@ -1081,8 +1072,7 @@ int cmd_print_ctf_metadata(struct bt_config *cfg)
 	if (!metadata_text_value) {
 		BT_CLI_LOGE_APPEND_CAUSE(
 			"Cannot find `text` string value in the resulting metadata info object.");
-		ret = -1;
-		goto end;
+		goto error;
 	}
 
 	metadata_text = bt_value_string_get(metadata_text_value);
@@ -1099,8 +1089,7 @@ int cmd_print_ctf_metadata(struct bt_config *cfg)
 				"Babeltrace CLI",
 				"Cannot open file for writing: path=\"%s\"",
 				cfg->cmd_data.print_ctf_metadata.output_path->str);
-			ret = -1;
-			goto end;
+			goto error;
 		}
 	}
 
@@ -1109,16 +1098,14 @@ int cmd_print_ctf_metadata(struct bt_config *cfg)
 		BT_CLI_LOGE_APPEND_CAUSE(
 			"Cannot write whole metadata text to output stream: "
 			"ret=%d", ret);
-		goto end;
+		goto error;
 	}
 
-	ret = 0;
+	cmd_status = BT_CMD_STATUS_OK;
 	goto end;
 
-failed:
-	ret = -1;
-	BT_CLI_LOGE_APPEND_CAUSE(
-		"Failed to query `metadata-info` object: %s", fail_reason);
+error:
+	cmd_status = BT_CMD_STATUS_ERROR;
 
 end:
 	bt_value_put_ref(results);
@@ -1135,7 +1122,7 @@ end:
 		}
 	}
 
-	return ret;
+	return cmd_status;
 }
 
 struct port_id {
@@ -1437,6 +1424,7 @@ int cmd_run_ctx_connect_upstream_port_to_downstream_component(
 				ctx->graph, trimmer_class, trimmer_name,
 				trimmer_params, ctx->cfg->log_level,
 				&trimmer);
+			bt_component_filter_get_ref(trimmer);
 			free(trimmer_name);
 			if (add_comp_status !=
 					BT_GRAPH_ADD_COMPONENT_STATUS_OK) {
@@ -1892,7 +1880,7 @@ int cmd_run_ctx_init(struct cmd_run_ctx *ctx, struct bt_config *cfg)
 
 	bt_graph_add_interrupter(ctx->graph, the_interrupter);
 	add_listener_status = bt_graph_add_source_component_output_port_added_listener(
-		ctx->graph, graph_source_output_port_added_listener, NULL, ctx,
+		ctx->graph, graph_source_output_port_added_listener, ctx,
 		NULL);
 	if (add_listener_status != BT_GRAPH_ADD_LISTENER_STATUS_OK) {
 		BT_CLI_LOGE_APPEND_CAUSE(
@@ -1901,7 +1889,7 @@ int cmd_run_ctx_init(struct cmd_run_ctx *ctx, struct bt_config *cfg)
 	}
 
 	add_listener_status = bt_graph_add_filter_component_output_port_added_listener(
-		ctx->graph, graph_filter_output_port_added_listener, NULL, ctx,
+		ctx->graph, graph_filter_output_port_added_listener, ctx,
 		NULL);
 	if (add_listener_status != BT_GRAPH_ADD_LISTENER_STATUS_OK) {
 		BT_CLI_LOGE_APPEND_CAUSE(
@@ -1919,6 +1907,116 @@ end:
 	return ret;
 }
 
+/*
+ * Compute the intersection of all streams in the array `streams`, write it
+ * in `range`.
+ */
+
+static
+int compute_stream_intersection(const bt_value *streams,
+		struct trace_range *range)
+{
+	uint64_t i, stream_count;
+	int ret;
+
+	BT_ASSERT(bt_value_get_type(streams) == BT_VALUE_TYPE_ARRAY);
+
+	stream_count = bt_value_array_get_length(streams);
+
+	BT_ASSERT(stream_count > 0);
+
+	range->intersection_range_begin_ns = 0;
+	range->intersection_range_end_ns = UINT64_MAX;
+
+	for (i = 0; i < stream_count; i++) {
+		int64_t begin_ns, end_ns;
+		uint64_t begin_ns_u, end_ns_u;
+		const bt_value *stream_value;
+		const bt_value *range_ns_value;
+		const bt_value *begin_value;
+		const bt_value *end_value;
+
+		stream_value = bt_value_array_borrow_element_by_index_const(streams, i);
+		if (bt_value_get_type(stream_value) != BT_VALUE_TYPE_MAP) {
+			BT_CLI_LOGE_APPEND_CAUSE("Unexpected format of `babeltrace.trace-infos` query result: "
+				"expected streams array element to be a map, got %s.",
+				bt_common_value_type_string(bt_value_get_type(stream_value)));
+			goto error;
+		}
+
+		range_ns_value = bt_value_map_borrow_entry_value_const(
+			stream_value, "range-ns");
+		if (!range_ns_value) {
+			BT_CLI_LOGE_APPEND_CAUSE("Unexpected format of `babeltrace.trace-infos` query result: "
+				"missing expected `range-ns` key in stream map.");
+			goto error;
+		}
+
+		if (bt_value_get_type(range_ns_value) != BT_VALUE_TYPE_MAP) {
+			BT_CLI_LOGE_APPEND_CAUSE("Unexpected format of `babeltrace.trace-infos` query result: "
+				"expected `range-ns` entry value of stream map to be a map, got %s.",
+				bt_common_value_type_string(bt_value_get_type(range_ns_value)));
+			goto error;
+		}
+
+		begin_value = bt_value_map_borrow_entry_value_const(range_ns_value, "begin");
+		if (!begin_value) {
+			BT_CLI_LOGE_APPEND_CAUSE("Unexpected format of `babeltrace.trace-infos` query result: "
+				"missing expected `begin` key in range-ns map.");
+			goto error;
+		}
+
+		if (bt_value_get_type(begin_value) != BT_VALUE_TYPE_SIGNED_INTEGER) {
+			BT_CLI_LOGE_APPEND_CAUSE("Unexpected format of `babeltrace.trace-infos` query result: "
+				"expected `begin` entry value of range-ns map to be a signed integer, got %s.",
+				bt_common_value_type_string(bt_value_get_type(range_ns_value)));
+			goto error;
+		}
+
+		end_value = bt_value_map_borrow_entry_value_const(range_ns_value, "end");
+		if (!end_value) {
+			BT_CLI_LOGE_APPEND_CAUSE("Unexpected format of `babeltrace.trace-infos` query result: "
+				"missing expected `end` key in range-ns map.");
+			goto error;
+		}
+
+		if (bt_value_get_type(end_value) != BT_VALUE_TYPE_SIGNED_INTEGER) {
+			BT_CLI_LOGE_APPEND_CAUSE("Unexpected format of `babeltrace.trace-infos` query result: "
+				"expected `end` entry value of range-ns map to be a signed integer, got %s.",
+				bt_common_value_type_string(bt_value_get_type(range_ns_value)));
+			goto error;
+		}
+
+		begin_ns = bt_value_integer_signed_get(begin_value);
+		end_ns = bt_value_integer_signed_get(end_value);
+
+		if (begin_ns < 0 || end_ns < 0 || end_ns < begin_ns) {
+			BT_CLI_LOGE_APPEND_CAUSE(
+				"Invalid stream range values: "
+				"range-ns:begin=%" PRId64 ", "
+				"range-ns:end=%" PRId64,
+				begin_ns, end_ns);
+			goto error;
+		}
+
+		begin_ns_u = begin_ns;
+		end_ns_u = end_ns;
+
+		range->intersection_range_begin_ns =
+			MAX(range->intersection_range_begin_ns, begin_ns_u);
+		range->intersection_range_end_ns =
+			MIN(range->intersection_range_end_ns, end_ns_u);
+	}
+
+	ret = 0;
+	goto end;
+error:
+	ret = -1;
+
+end:
+	return ret;
+}
+
 static
 int set_stream_intersections(struct cmd_run_ctx *ctx,
 		struct bt_config_component *cfg_comp,
@@ -1926,110 +2024,95 @@ int set_stream_intersections(struct cmd_run_ctx *ctx,
 {
 	int ret = 0;
 	uint64_t trace_idx;
-	int64_t trace_count;
-	const char *path = NULL;
+	uint64_t trace_count;
 	const bt_value *query_result = NULL;
 	const bt_value *trace_info = NULL;
-	const bt_value *intersection_range = NULL;
-	const bt_value *intersection_begin = NULL;
-	const bt_value *intersection_end = NULL;
 	const bt_value *stream_infos = NULL;
 	const bt_value *stream_info = NULL;
 	struct port_id *port_id = NULL;
-	struct trace_range *trace_range = NULL;
+	struct trace_range *stream_intersection = NULL;
 	const char *fail_reason = NULL;
 	const bt_component_class *comp_cls =
 		bt_component_class_source_as_component_class_const(src_comp_cls);
 
-	ret = query(ctx->cfg, comp_cls, "babeltrace.trace-info",
+	ret = query(ctx->cfg, comp_cls, "babeltrace.trace-infos",
 		cfg_comp->params, &query_result,
 		&fail_reason);
 	if (ret) {
-		BT_LOGD("Component class does not support the `babeltrace.trace-info` query: %s: "
+		BT_CLI_LOGE_APPEND_CAUSE("Failed to execute `babeltrace.trace-infos` query: %s: "
 			"comp-class-name=\"%s\"", fail_reason,
 			bt_component_class_get_name(comp_cls));
 		ret = -1;
-		goto error;
+		goto end;
 	}
 
 	BT_ASSERT(query_result);
 
 	if (!bt_value_is_array(query_result)) {
-		BT_LOGD("Unexpected format of `babeltrace.trace-info` query result: "
-			"component-class-name=%s",
-			bt_component_class_get_name(comp_cls));
+		BT_CLI_LOGE_APPEND_CAUSE("`babeltrace.trace-infos` query: expecting result to be an array: "
+			"component-class-name=%s, actual-type=%s",
+			bt_component_class_get_name(comp_cls),
+			bt_common_value_type_string(bt_value_get_type(query_result)));
 		ret = -1;
-		goto error;
+		goto end;
 	}
 
 	trace_count = bt_value_array_get_length(query_result);
-	if (trace_count < 0) {
+	if (trace_count == 0) {
+		BT_CLI_LOGE_APPEND_CAUSE("`babeltrace.trace-infos` query: result is empty: "
+			"component-class-name=%s", bt_component_class_get_name(comp_cls));
 		ret = -1;
-		goto error;
+		goto end;
 	}
 
 	for (trace_idx = 0; trace_idx < trace_count; trace_idx++) {
-		int64_t begin, end;
 		uint64_t stream_idx;
 		int64_t stream_count;
+		struct trace_range trace_intersection;
 
 		trace_info = bt_value_array_borrow_element_by_index_const(
 			query_result, trace_idx);
-		if (!trace_info || !bt_value_is_map(trace_info)) {
-			ret = -1;
-			BT_LOGD_STR("Cannot retrieve trace from query result.");
-			goto error;
-		}
-
-		intersection_range = bt_value_map_borrow_entry_value_const(
-			trace_info, "intersection-range-ns");
-		if (!intersection_range) {
+		if (!bt_value_is_map(trace_info)) {
 			ret = -1;
-			BT_LOGD_STR("Cannot retrieve \'intersetion-range-ns\' field from query result.");
-			goto error;
-		}
-
-		intersection_begin = bt_value_map_borrow_entry_value_const(intersection_range,
-									   "begin");
-		if (!intersection_begin) {
-			ret = -1;
-			BT_LOGD_STR("Cannot retrieve intersection-range-ns \'begin\' field from query result.");
-			goto error;
+			BT_CLI_LOGE_APPEND_CAUSE("`babeltrace.trace-infos` query: expecting element to be a map: "
+				"component-class-name=%s, actual-type=%s",
+				bt_component_class_get_name(comp_cls),
+				bt_common_value_type_string(bt_value_get_type(trace_info)));
+			goto end;
 		}
 
-		intersection_end = bt_value_map_borrow_entry_value_const(intersection_range,
-									 "end");
-		if (!intersection_end) {
+		stream_infos = bt_value_map_borrow_entry_value_const(
+			trace_info, "stream-infos");
+		if (!stream_infos) {
 			ret = -1;
-			BT_LOGD_STR("Cannot retrieve intersection-range-ns \'end\' field from query result.");
-			goto error;
+			BT_CLI_LOGE_APPEND_CAUSE("`babeltrace.trace-infos` query: missing `streams` key in trace info map: "
+				"component-class-name=%s",
+				bt_component_class_get_name(comp_cls));
+			goto end;
 		}
 
-		begin = bt_value_integer_signed_get(intersection_begin);
-		end = bt_value_integer_signed_get(intersection_end);
-
-		if (begin < 0 || end < 0 || end < begin) {
-			BT_CLI_LOGE_APPEND_CAUSE(
-				"Invalid trace stream intersection values: "
-				"intersection-range-ns:begin=%" PRId64
-				", intersection-range-ns:end=%" PRId64,
-				begin, end);
+		if (!bt_value_is_array(stream_infos)) {
 			ret = -1;
-			goto error;
+			BT_CLI_LOGE_APPEND_CAUSE("`babeltrace.trace-infos` query: expecting `streams` entry of trace info map to be an array: "
+				"component-class-name=%s, actual-type=%s",
+				bt_component_class_get_name(comp_cls),
+				bt_common_value_type_string(bt_value_get_type(stream_infos)));
+			goto end;
 		}
 
-		stream_infos = bt_value_map_borrow_entry_value_const(trace_info,
-								     "streams");
-		if (!stream_infos || !bt_value_is_array(stream_infos)) {
+		stream_count = bt_value_array_get_length(stream_infos);
+		if (stream_count == 0) {
 			ret = -1;
-			BT_LOGD_STR("Cannot retrieve stream information from trace in query result.");
-			goto error;
+			BT_CLI_LOGE_APPEND_CAUSE("`babeltrace.trace-infos` query: list of streams is empty: "
+				"component-class-name=%s",
+				bt_component_class_get_name(comp_cls));
+			goto end;
 		}
 
-		stream_count = bt_value_array_get_length(stream_infos);
-		if (stream_count < 0) {
-			ret = -1;
-			goto error;
+		ret = compute_stream_intersection(stream_infos, &trace_intersection);
+		if (ret != 0) {
+			BT_CLI_LOGE_APPEND_CAUSE("Failed to compute trace streams intersection.");
+			goto end;
 		}
 
 		for (stream_idx = 0; stream_idx < stream_count; stream_idx++) {
@@ -2040,41 +2123,56 @@ int set_stream_intersections(struct cmd_run_ctx *ctx,
 				ret = -1;
 				BT_CLI_LOGE_APPEND_CAUSE(
 					"Cannot allocate memory for port_id structure.");
-				goto error;
+				goto end;
 			}
 			port_id->instance_name = strdup(cfg_comp->instance_name->str);
 			if (!port_id->instance_name) {
 				ret = -1;
 				BT_CLI_LOGE_APPEND_CAUSE(
 					"Cannot allocate memory for port_id component instance name.");
-				goto error;
+				goto end;
 			}
 
-			trace_range = g_new0(struct trace_range, 1);
-			if (!trace_range) {
+			stream_intersection = g_new0(struct trace_range, 1);
+			if (!stream_intersection) {
 				ret = -1;
 				BT_CLI_LOGE_APPEND_CAUSE(
 					"Cannot allocate memory for trace_range structure.");
-				goto error;
+				goto end;
 			}
-			trace_range->intersection_range_begin_ns = begin;
-			trace_range->intersection_range_end_ns = end;
+
+			*stream_intersection = trace_intersection;
 
 			stream_info = bt_value_array_borrow_element_by_index_const(
 				stream_infos, stream_idx);
-			if (!stream_info || !bt_value_is_map(stream_info)) {
+			if (!bt_value_is_map(stream_info)) {
 				ret = -1;
-				BT_CLI_LOGE_APPEND_CAUSE(
-					"Cannot retrieve stream informations from trace in query result.");
-				goto error;
+				BT_CLI_LOGE_APPEND_CAUSE("`babeltrace.trace-infos` query: "
+					"expecting element of stream list to be a map: "
+					"component-class-name=%s, actual-type=%s",
+					bt_component_class_get_name(comp_cls),
+					bt_common_value_type_string(bt_value_get_type(stream_info)));
+				goto end;
 			}
 
 			port_name = bt_value_map_borrow_entry_value_const(stream_info, "port-name");
-			if (!port_name || !bt_value_is_string(port_name)) {
+			if (!port_name) {
 				ret = -1;
-				BT_CLI_LOGE_APPEND_CAUSE(
-					"Cannot retrieve port name in query result.");
-				goto error;
+				BT_CLI_LOGE_APPEND_CAUSE("`babeltrace.trace-infos` query: "
+					"missing `port-name` key in stream info map: "
+					"component-class-name=%s",
+					bt_component_class_get_name(comp_cls));
+				goto end;
+			}
+
+			if (!bt_value_is_string(port_name)) {
+				ret = -1;
+				BT_CLI_LOGE_APPEND_CAUSE("`babeltrace.trace-infos` query: "
+					"expecting `port-name` entry of stream info map to be a string: "
+					"component-class-name=%s, actual-type=%s",
+					bt_component_class_get_name(comp_cls),
+					bt_common_value_type_string(bt_value_get_type(port_name)));
+				goto end;
 			}
 
 			port_id->port_name = g_strdup(bt_value_string_get(port_name));
@@ -2082,29 +2180,24 @@ int set_stream_intersections(struct cmd_run_ctx *ctx,
 				ret = -1;
 				BT_CLI_LOGE_APPEND_CAUSE(
 					"Cannot allocate memory for port_id port_name.");
-				goto error;
+				goto end;
 			}
 
 			BT_LOGD("Inserting stream intersection ");
 
-			g_hash_table_insert(ctx->intersections, port_id, trace_range);
+			g_hash_table_insert(ctx->intersections, port_id, stream_intersection);
 
 			port_id = NULL;
-			trace_range = NULL;
+			stream_intersection = NULL;
 		}
 	}
 
-	goto end;
-
-error:
-	BT_CLI_LOGE_APPEND_CAUSE(
-		"Cannot determine stream intersection of trace: path=\"%s\"",
-		path ? path : "(unknown)");
+	ret = 0;
 
 end:
 	bt_value_put_ref(query_result);
 	g_free(port_id);
-	g_free(trace_range);
+	g_free(stream_intersection);
 	return ret;
 }
 
@@ -2139,7 +2232,7 @@ int cmd_run_ctx_create_components_from_config_components(
 				cfg_comp->comp_cls_name->str);
 			break;
 		default:
-			abort();
+			bt_common_abort();
 		}
 
 		if (!comp_cls) {
@@ -2160,21 +2253,24 @@ int cmd_run_ctx_create_components_from_config_components(
 				comp_cls, cfg_comp->instance_name->str,
 				cfg_comp->params, cfg_comp->log_level,
 				(void *) &comp);
+			bt_component_source_get_ref(comp);
 			break;
 		case BT_COMPONENT_CLASS_TYPE_FILTER:
 			ret = bt_graph_add_filter_component(ctx->graph,
 				comp_cls, cfg_comp->instance_name->str,
 				cfg_comp->params, cfg_comp->log_level,
 				(void *) &comp);
+			bt_component_filter_get_ref(comp);
 			break;
 		case BT_COMPONENT_CLASS_TYPE_SINK:
 			ret = bt_graph_add_sink_component(ctx->graph,
 				comp_cls, cfg_comp->instance_name->str,
 				cfg_comp->params, cfg_comp->log_level,
 				(void *) &comp);
+			bt_component_sink_get_ref(comp);
 			break;
 		default:
-			abort();
+			bt_common_abort();
 		}
 
 		if (ret) {
@@ -2192,6 +2288,8 @@ int cmd_run_ctx_create_components_from_config_components(
 				cfg_comp->type == BT_COMPONENT_CLASS_TYPE_SOURCE) {
 			ret = set_stream_intersections(ctx, cfg_comp, comp_cls);
 			if (ret) {
+				BT_CLI_LOGE_APPEND_CAUSE(
+					"Cannot determine stream intersection of trace.");
 				goto error;
 			}
 		}
@@ -2215,7 +2313,7 @@ int cmd_run_ctx_create_components_from_config_components(
 				GUINT_TO_POINTER(quark), (void *) comp);
 			break;
 		default:
-			abort();
+			bt_common_abort();
 		}
 
 		comp = NULL;
@@ -2339,9 +2437,9 @@ end:
 }
 
 static
-int cmd_run(struct bt_config *cfg)
+enum bt_cmd_status cmd_run(struct bt_config *cfg)
 {
-	int ret = 0;
+	enum bt_cmd_status cmd_status;
 	struct cmd_run_ctx ctx = { 0 };
 
 	/* Initialize the command's context and the graph object */
@@ -2398,12 +2496,15 @@ int cmd_run(struct bt_config *cfg)
 
 		switch (run_status) {
 		case BT_GRAPH_RUN_STATUS_OK:
-			break;
+			cmd_status = BT_CMD_STATUS_OK;
+			goto end;
 		case BT_GRAPH_RUN_STATUS_AGAIN:
 			if (bt_interrupter_is_set(the_interrupter)) {
-				BT_CLI_LOGW_APPEND_CAUSE(
-					"Graph was interrupted by user.");
-				goto error;
+				/*
+				 * The graph was interrupted by a SIGINT.
+				 */
+				cmd_status = BT_CMD_STATUS_INTERRUPTED;
+				goto end;
 			}
 
 			if (cfg->cmd_data.run.retry_duration_us > 0) {
@@ -2413,22 +2514,16 @@ int cmd_run(struct bt_config *cfg)
 
 				if (usleep(cfg->cmd_data.run.retry_duration_us)) {
 					if (bt_interrupter_is_set(the_interrupter)) {
-						BT_CLI_LOGW_APPEND_CAUSE(
-							"Graph was interrupted by user.");
-						goto error;
+						cmd_status = BT_CMD_STATUS_INTERRUPTED;
+						goto end;
 					}
 				}
 			}
 			break;
-		case BT_GRAPH_RUN_STATUS_END:
-			goto end;
 		default:
 			if (bt_interrupter_is_set(the_interrupter)) {
-				BT_CLI_LOGW_APPEND_CAUSE(
-					"Graph was interrupted by user and failed: "
-					"status=%s",
-					bt_common_func_status_string(run_status));
-				goto error;
+				cmd_status = BT_CMD_STATUS_INTERRUPTED;
+				goto end;
 			}
 
 			BT_CLI_LOGE_APPEND_CAUSE(
@@ -2436,17 +2531,12 @@ int cmd_run(struct bt_config *cfg)
 			goto error;
 		}
 	}
-
-	goto end;
-
 error:
-	if (ret == 0) {
-		ret = -1;
-	}
+	cmd_status = BT_CMD_STATUS_ERROR;
 
 end:
 	cmd_run_ctx_destroy(&ctx);
-	return ret;
+	return cmd_status;
 }
 
 static
@@ -2486,13 +2576,12 @@ static
 void print_error_causes(void)
 {
 	const bt_error *error = bt_current_thread_take_error();
-	int64_t i;
-	GString *folded = NULL;
 	unsigned int columns;
+	gchar *error_str = NULL;
 
 	if (!error || bt_error_get_cause_count(error) == 0) {
 		fprintf(stderr, "%s%sUnknown command-line error.%s\n",
-			bt_common_color_bold(), bt_common_color_fg_red(),
+			bt_common_color_bold(), bt_common_color_fg_bright_red(),
 			bt_common_color_reset());
 		goto end;
 	}
@@ -2507,106 +2596,42 @@ void print_error_causes(void)
 	 * This helps visually separate the error causes from the last
 	 * logging statement.
 	 */
-	fprintf(stderr, "\n");
-
-	/* Reverse order: deepest (root) cause printed at the end */
-	for (i = bt_error_get_cause_count(error) - 1; i >= 0; i--) {
-		const bt_error_cause *cause =
-			bt_error_borrow_cause_by_index(error, (uint64_t) i);
-		const char *prefix_fmt =
-			i == bt_error_get_cause_count(error) - 1 ?
-				"%s%sERROR%s:    " : "%s%sCAUSED BY%s ";
-
-		/* Print prefix */
-		fprintf(stderr, prefix_fmt,
-			bt_common_color_bold(), bt_common_color_fg_red(),
-			bt_common_color_reset());
+	fputc('\n',  stderr);
 
-		/* Print actor name */
-		fprintf(stderr, "[");
-		switch (bt_error_cause_get_actor_type(cause)) {
-		case BT_ERROR_CAUSE_ACTOR_TYPE_UNKNOWN:
-			fprintf(stderr, "%s%s%s",
-				bt_common_color_bold(),
-				bt_error_cause_get_module_name(cause),
-				bt_common_color_reset());
-			break;
-		case BT_ERROR_CAUSE_ACTOR_TYPE_COMPONENT:
-			fprintf(stderr, "%s%s%s: ",
-				bt_common_color_bold(),
-				bt_error_cause_component_actor_get_component_name(cause),
-				bt_common_color_reset());
-			print_plugin_comp_cls_opt(stderr,
-				bt_error_cause_component_actor_get_plugin_name(cause),
-				bt_error_cause_component_actor_get_component_class_name(cause),
-				bt_error_cause_component_actor_get_component_class_type(cause));
-			break;
-		case BT_ERROR_CAUSE_ACTOR_TYPE_COMPONENT_CLASS:
-			print_plugin_comp_cls_opt(stderr,
-				bt_error_cause_component_class_actor_get_plugin_name(cause),
-				bt_error_cause_component_class_actor_get_component_class_name(cause),
-				bt_error_cause_component_class_actor_get_component_class_type(cause));
-			break;
-		case BT_ERROR_CAUSE_ACTOR_TYPE_MESSAGE_ITERATOR:
-			fprintf(stderr, "%s%s%s (%s%s%s): ",
-				bt_common_color_bold(),
-				bt_error_cause_message_iterator_actor_get_component_name(cause),
-				bt_common_color_reset(),
-				bt_common_color_bold(),
-				bt_error_cause_message_iterator_actor_get_component_output_port_name(cause),
-				bt_common_color_reset());
-			print_plugin_comp_cls_opt(stderr,
-				bt_error_cause_message_iterator_actor_get_plugin_name(cause),
-				bt_error_cause_message_iterator_actor_get_component_class_name(cause),
-				bt_error_cause_message_iterator_actor_get_component_class_type(cause));
-			break;
-		default:
-			abort();
-		}
+	error_str = format_bt_error(error, columns, bt_cli_log_level,
+		BT_COMMON_COLOR_WHEN_AUTO);
+	BT_ASSERT(error_str);
 
-		/* Print file name and line number */
-		fprintf(stderr, "] (%s%s%s%s:%s%" PRIu64 "%s)\n",
-			bt_common_color_bold(),
-			bt_common_color_fg_magenta(),
-			bt_error_cause_get_file_name(cause),
-			bt_common_color_reset(),
-			bt_common_color_fg_green(),
-			bt_error_cause_get_line_number(cause),
-			bt_common_color_reset());
-
-		/* Print message */
-		folded = bt_common_fold(bt_error_cause_get_message(cause),
-			columns, 2);
-		if (!folded) {
-			BT_LOGE_STR("Could not fold string.");
-			fprintf(stderr, "%s\n",
-				bt_error_cause_get_message(cause));
-			continue;
-		}
-
-		fprintf(stderr, "%s\n", folded->str);
-		g_string_free(folded, TRUE);
-		folded = NULL;
-	}
+	fprintf(stderr, "%s\n", error_str);
 
 end:
-	BT_ASSERT(!folded);
-
 	if (error) {
 		bt_error_release(error);
 	}
+
+	g_free(error_str);
 }
 
 int main(int argc, const char **argv)
 {
-	int ret;
-	int retcode;
-	struct bt_config *cfg;
+	int ret, retcode;
+	enum bt_cmd_status cmd_status;
+	struct bt_config *cfg = NULL;
 
 	init_log_level();
 	set_signal_handler();
 	init_loaded_plugins();
-	cfg = bt_config_cli_args_create_with_default(argc, argv, &retcode);
+
+	BT_ASSERT(!the_interrupter);
+	the_interrupter = bt_interrupter_create();
+	if (!the_interrupter) {
+		BT_CLI_LOGE_APPEND_CAUSE("Failed to create an interrupter object.");
+		retcode = 1;
+		goto end;
+	}
+
+	cfg = bt_config_cli_args_create_with_default(argc, argv, &retcode,
+		the_interrupter);
 
 	if (retcode < 0) {
 		/* Quit without errors; typically usage/version */
@@ -2640,55 +2665,61 @@ int main(int argc, const char **argv)
 		}
 	}
 
-	BT_ASSERT(!the_interrupter);
-	the_interrupter = bt_interrupter_create();
-	if (!the_interrupter) {
-		BT_CLI_LOGE_APPEND_CAUSE("Failed to create an interrupter object.");
-		retcode = 1;
-		goto end;
-	}
-
 	BT_LOGI("Executing command: cmd=%d, command-name=\"%s\"",
 		cfg->command, cfg->command_name);
 
 	switch (cfg->command) {
 	case BT_CONFIG_COMMAND_RUN:
-		ret = cmd_run(cfg);
+		cmd_status = cmd_run(cfg);
 		break;
 	case BT_CONFIG_COMMAND_LIST_PLUGINS:
-		ret = cmd_list_plugins(cfg);
+		cmd_status = cmd_list_plugins(cfg);
 		break;
 	case BT_CONFIG_COMMAND_HELP:
-		ret = cmd_help(cfg);
+		cmd_status = cmd_help(cfg);
 		break;
 	case BT_CONFIG_COMMAND_QUERY:
-		ret = cmd_query(cfg);
+		cmd_status = cmd_query(cfg);
 		break;
 	case BT_CONFIG_COMMAND_PRINT_CTF_METADATA:
-		ret = cmd_print_ctf_metadata(cfg);
+		cmd_status = cmd_print_ctf_metadata(cfg);
 		break;
 	case BT_CONFIG_COMMAND_PRINT_LTTNG_LIVE_SESSIONS:
-		ret = cmd_print_lttng_live_sessions(cfg);
+		cmd_status = cmd_print_lttng_live_sessions(cfg);
 		break;
 	default:
 		BT_LOGF("Invalid/unknown command: cmd=%d", cfg->command);
-		abort();
+		bt_common_abort();
 	}
 
-	BT_LOGI("Command completed: cmd=%d, command-name=\"%s\", ret=%d",
-		cfg->command, cfg->command_name, ret);
+	BT_LOGI("Command completed: cmd=%d, command-name=\"%s\", command-status=\"%s\"",
+		cfg->command, cfg->command_name, bt_cmd_status_string(cmd_status));
 	warn_command_name_and_directory_clash(cfg);
-	retcode = ret ? 1 : 0;
+
+	switch (cmd_status) {
+	case BT_CMD_STATUS_OK:
+		retcode = 0;
+		break;
+	case BT_CMD_STATUS_ERROR:
+		retcode = 1;
+		break;
+	case BT_CMD_STATUS_INTERRUPTED:
+		retcode = 2;
+		break;
+	default:
+		BT_LOGF("Invalid command status: cmd-status=%d", cmd_status);
+		bt_common_abort();
+	}
 
 end:
+	if (retcode == 1) {
+		print_error_causes();
+	}
+
 	BT_OBJECT_PUT_REF_AND_RESET(cfg);
 	fini_loaded_plugins();
 	bt_interrupter_put_ref(the_interrupter);
 
-	if (retcode != 0) {
-		print_error_causes();
-	}
-
 	/*
 	 * Clear current thread's error in case there is one to avoid a
 	 * memory leak.