#include "logging.h"
#include <babeltrace/babeltrace.h>
-#include <babeltrace/plugin/plugin.h>
#include <babeltrace/common-internal.h>
-#include <babeltrace/graph/component.h>
-#include <babeltrace/graph/component-source.h>
-#include <babeltrace/graph/component-sink.h>
-#include <babeltrace/graph/component-filter.h>
-#include <babeltrace/graph/component-class.h>
-#include <babeltrace/graph/port.h>
-#include <babeltrace/graph/graph.h>
-#include <babeltrace/graph/connection.h>
-#include <babeltrace/graph/notification-iterator.h>
-#include <babeltrace/ref.h>
-#include <babeltrace/values.h>
#include <babeltrace/values-internal.h>
-#include <babeltrace/logging.h>
#include <unistd.h>
#include <stdlib.h>
#include <popt.h>
/* Application's processing graph (weak) */
static struct bt_graph *the_graph;
+static struct bt_query_executor *the_query_executor;
static bool canceled = false;
GPtrArray *loaded_plugins;
bt_graph_cancel(the_graph);
}
+ if (the_query_executor) {
+ bt_query_executor_cancel(the_query_executor);
+ }
+
canceled = true;
}
g_ptr_array_free(loaded_plugins, TRUE);
}
+static
+int create_the_query_executor(void)
+{
+ int ret = 0;
+
+ the_query_executor = bt_query_executor_create();
+ if (!the_query_executor) {
+ BT_LOGE_STR("Cannot create a query executor.");
+ ret = -1;
+ }
+
+ return ret;
+}
+
+static
+void destroy_the_query_executor(void)
+{
+ BT_PUT(the_query_executor);
+}
+
+static
+int query(struct bt_component_class *comp_cls, const char *obj,
+ struct bt_value *params, struct bt_value **user_result,
+ const char **fail_reason)
+{
+ struct bt_value *result = NULL;
+ enum bt_query_status status;
+ *fail_reason = "unknown error";
+ int ret = 0;
+
+ assert(fail_reason);
+ assert(user_result);
+ ret = create_the_query_executor();
+ if (ret) {
+ /* create_the_query_executor() logs errors */
+ goto end;
+ }
+
+ if (canceled) {
+ BT_LOGI("Canceled by user before executing the query: "
+ "comp-cls-addr=%p, comp-cls-name=\"%s\", "
+ "query-obj=\"%s\"", comp_cls,
+ bt_component_class_get_name(comp_cls), obj);
+ *fail_reason = "canceled by user";
+ goto error;
+ }
+
+ while (true) {
+ status = bt_query_executor_query(the_query_executor, comp_cls,
+ obj, params, &result);
+ switch (status) {
+ case BT_QUERY_STATUS_OK:
+ goto ok;
+ case BT_QUERY_STATUS_AGAIN:
+ {
+ const uint64_t sleep_time_us = 100000;
+
+ /* Wait 100 ms and retry */
+ BT_LOGV("Got BT_QUERY_STATUS_AGAIN: sleeping: "
+ "time-us=%" PRIu64, sleep_time_us);
+
+ if (usleep(sleep_time_us)) {
+ if (bt_query_executor_is_canceled(the_query_executor)) {
+ BT_LOGI("Query was canceled by user: "
+ "comp-cls-addr=%p, comp-cls-name=\"%s\", "
+ "query-obj=\"%s\"", comp_cls,
+ bt_component_class_get_name(comp_cls),
+ obj);
+ *fail_reason = "canceled by user";
+ goto error;
+ }
+ }
+
+ continue;
+ }
+ case BT_QUERY_STATUS_EXECUTOR_CANCELED:
+ *fail_reason = "canceled by user";
+ goto error;
+ case BT_QUERY_STATUS_ERROR:
+ case BT_QUERY_STATUS_INVALID:
+ goto error;
+ case BT_QUERY_STATUS_INVALID_OBJECT:
+ *fail_reason = "invalid or unknown query object";
+ goto error;
+ case BT_QUERY_STATUS_INVALID_PARAMS:
+ *fail_reason = "invalid query parameters";
+ goto error;
+ case BT_QUERY_STATUS_NOMEM:
+ *fail_reason = "not enough memory";
+ goto error;
+ default:
+ BT_LOGF("Unknown query status: status=%d", status);
+ abort();
+ }
+ }
+
+ok:
+ *user_result = result;
+ result = NULL;
+ goto end;
+
+error:
+ ret = -1;
+
+end:
+ destroy_the_query_executor();
+ bt_put(result);
+ return ret;
+}
+
static
struct bt_plugin *find_plugin(const char *name)
{
int ret = 0;
struct bt_component_class *comp_cls = NULL;
struct bt_value *results = NULL;
+ const char *fail_reason = NULL;
comp_cls = find_component_class(cfg->cmd_data.query.cfg_component->plugin_name->str,
cfg->cmd_data.query.cfg_component->comp_cls_name->str,
goto end;
}
- results = bt_component_class_query(comp_cls,
- cfg->cmd_data.query.object->str,
- cfg->cmd_data.query.cfg_component->params);
- if (!results) {
- BT_LOGE("Failed to query component class: plugin-name=\"%s\", "
- "comp-cls-name=\"%s\", comp-cls-type=%d "
- "object=\"%s\"",
- 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);
- fprintf(stderr, "%s%sFailed to query info to %s",
- bt_common_color_bold(),
- bt_common_color_fg_red(),
- bt_common_color_reset());
- print_plugin_comp_cls_opt(stderr,
- 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);
- fprintf(stderr, "%s%s with object `%s`%s\n",
- bt_common_color_bold(),
- bt_common_color_fg_red(),
- cfg->cmd_data.query.object->str,
- bt_common_color_reset());
- ret = -1;
- goto end;
+ ret = query(comp_cls, cfg->cmd_data.query.object->str,
+ cfg->cmd_data.query.cfg_component->params, &results,
+ &fail_reason);
+ if (ret) {
+ goto failed;
}
print_value(stdout, results, 0);
+ goto end;
+
+failed:
+ BT_LOGE("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);
+ fprintf(stderr, "%s%sFailed to query info to %s",
+ bt_common_color_bold(),
+ bt_common_color_fg_red(),
+ bt_common_color_reset());
+ print_plugin_comp_cls_opt(stderr,
+ 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);
+ fprintf(stderr, "%s%s with object `%s`: %s%s\n",
+ bt_common_color_bold(),
+ bt_common_color_fg_red(),
+ cfg->cmd_data.query.object->str,
+ fail_reason,
+ bt_common_color_reset());
+ ret = -1;
end:
bt_put(comp_cls);
static const enum bt_component_class_type comp_cls_type =
BT_COMPONENT_CLASS_TYPE_SOURCE;
int64_t array_size, i;
+ const char *fail_reason = NULL;
assert(cfg->cmd_data.print_lttng_live_sessions.url);
comp_cls = find_component_class(plugin_name, comp_cls_name,
goto error;
}
- results = bt_component_class_query(comp_cls, "sessions",
- params);
- if (!results) {
- BT_LOGE_STR("Failed to query for sessions.");
- fprintf(stderr, "%s%sFailed to request sessions%s\n",
- bt_common_color_bold(),
- bt_common_color_fg_red(),
- bt_common_color_reset());
- goto error;
+ ret = query(comp_cls, "sessions", params, &results, &fail_reason);
+ if (ret) {
+ goto failed;
}
if (!bt_value_is_array(results)) {
BT_PUT(map);
}
+
+ goto end;
+
+failed:
+ BT_LOGE("Failed to query for sessions: %s", fail_reason);
+ fprintf(stderr, "%s%sFailed to request sessions: %s%s\n",
+ bt_common_color_bold(),
+ bt_common_color_fg_red(),
+ fail_reason,
+ bt_common_color_reset());
+
+error:
+ ret = -1;
+
end:
bt_put(v);
bt_put(map);
bt_put(params);
bt_put(comp_cls);
return 0;
-
-error:
- ret = -1;
- goto end;
}
static
static const char * const comp_cls_name = "fs";
static const enum bt_component_class_type comp_cls_type =
BT_COMPONENT_CLASS_TYPE_SOURCE;
+ const char *fail_reason = NULL;
assert(cfg->cmd_data.print_ctf_metadata.path);
comp_cls = find_component_class(plugin_name, comp_cls_name,
goto end;
}
- results = bt_component_class_query(comp_cls, "metadata-info",
- params);
- if (!results) {
- ret = -1;
- BT_LOGE_STR("Failed to query for metadata info.");
- fprintf(stderr, "%s%sFailed to request metadata info%s\n",
- bt_common_color_bold(),
- bt_common_color_fg_red(),
- bt_common_color_reset());
- goto end;
+ ret = query(comp_cls, "metadata-info", params, &results, &fail_reason);
+ if (ret) {
+ goto failed;
}
metadata_text_value = bt_value_map_get(results, "text");
ret = bt_value_string_get(metadata_text_value, &metadata_text);
assert(ret == 0);
printf("%s\n", metadata_text);
+ goto end;
+
+failed:
+ ret = -1;
+ BT_LOGE("Failed to query for metadata info: %s", fail_reason);
+ fprintf(stderr, "%s%sFailed to request metadata info: %s%s\n",
+ bt_common_color_bold(),
+ bt_common_color_fg_red(),
+ fail_reason,
+ bt_common_color_reset());
end:
+ destroy_the_query_executor();
bt_put(results);
bt_put(params);
bt_put(metadata_text_value);
struct bt_value *stream_info = NULL;
struct port_id *port_id = NULL;
struct trace_range *trace_range = NULL;
+ const char *fail_reason = NULL;
component_path_value = bt_value_map_get(cfg_comp->params, "path");
if (!bt_value_is_string(component_path_value)) {
goto error;
}
- query_result = bt_component_class_query(comp_cls, "trace-info",
- query_params);
- if (!query_result) {
- BT_LOGD("Component class \'%s\' does not support the \'trace-info\' query.",
+ ret = query(comp_cls, "trace-info", query_params, &query_result,
+ &fail_reason);
+ if (ret) {
+ BT_LOGD("Component class does not support the `trace-info` query: %s: "
+ "comp-class-name=\"%s\"", fail_reason,
bt_component_class_get_name(comp_cls));
ret = -1;
goto error;
projects / babeltrace.git / blobdiff