+++ /dev/null
-/*
- * Copyright (C) 2017 Julien Desfossez <jdesfossez@efficios.com>
- *
- * SPDX-License-Identifier: GPL-2.0-only
- *
- */
-
-#define _LGPL_SOURCE
-#include <popt.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <inttypes.h>
-#include <ctype.h>
-
-#include <common/sessiond-comm/sessiond-comm.h>
-#include <common/mi-lttng.h>
-
-#include "../command.h"
-#include <lttng/lttng.h>
-
-static char *opt_session_name;
-static int opt_no_wait;
-static struct mi_writer *writer;
-
-#ifdef LTTNG_EMBED_HELP
-static const char help_msg[] =
-#include <lttng-rotate.1.h>
-;
-#endif
-
-enum {
- OPT_HELP = 1,
- OPT_LIST_OPTIONS,
-};
-
-static struct poptOption long_options[] = {
- /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
- {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
- {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
- {"no-wait", 'n', POPT_ARG_VAL, &opt_no_wait, 1, 0, 0},
- {0, 0, 0, 0, 0, 0, 0}
-};
-
-static int rotate_tracing(char *session_name)
-{
- int ret;
- enum cmd_error_code cmd_ret = CMD_SUCCESS;
- struct lttng_rotation_handle *handle = NULL;
- enum lttng_rotation_status rotation_status;
- enum lttng_rotation_state rotation_state = LTTNG_ROTATION_STATE_ONGOING;
- const struct lttng_trace_archive_location *location = NULL;
- bool print_location = true;
-
- DBG("Rotating the output files of session %s", session_name);
-
- ret = lttng_rotate_session(session_name, NULL, &handle);
- if (ret < 0) {
- switch (-ret) {
- case LTTNG_ERR_SESSION_NOT_STARTED:
- WARN("Tracing session %s not started yet", session_name);
- cmd_ret = CMD_WARNING;
- goto end;
- default:
- ERR("%s", lttng_strerror(ret));
- goto error;
- }
- }
-
- if (opt_no_wait) {
- rotation_state = LTTNG_ROTATION_STATE_ONGOING;
- goto skip_wait;
- }
-
- _MSG("Waiting for rotation to complete");
- ret = fflush(stdout);
- if (ret) {
- PERROR("fflush");
- goto error;
- }
-
- do {
- rotation_status = lttng_rotation_handle_get_state(handle,
- &rotation_state);
- if (rotation_status != LTTNG_ROTATION_STATUS_OK) {
- MSG("");
- ERR("Failed to query the state of the rotation.");
- goto error;
- }
-
- if (rotation_state == LTTNG_ROTATION_STATE_ONGOING) {
- ret = usleep(DEFAULT_DATA_AVAILABILITY_WAIT_TIME_US);
- if (ret) {
- PERROR("\nusleep");
- goto error;
- }
- _MSG(".");
-
- ret = fflush(stdout);
- if (ret) {
- PERROR("\nfflush");
- goto error;
- }
- }
- } while (rotation_state == LTTNG_ROTATION_STATE_ONGOING);
- MSG("");
-
-skip_wait:
- switch (rotation_state) {
- case LTTNG_ROTATION_STATE_COMPLETED:
- rotation_status = lttng_rotation_handle_get_archive_location(
- handle, &location);
- if (rotation_status != LTTNG_ROTATION_STATUS_OK) {
- ERR("Failed to retrieve the rotation's completed chunk archive location.");
- cmd_ret = CMD_ERROR;
- }
- break;
- case LTTNG_ROTATION_STATE_EXPIRED:
- break;
- case LTTNG_ROTATION_STATE_ERROR:
- ERR("Failed to retrieve rotation state.");
- goto error;
- case LTTNG_ROTATION_STATE_ONGOING:
- MSG("Rotation ongoing for session %s", session_name);
- print_location = false;
- break;
- default:
- ERR("Unexpected rotation state encountered.");
- goto error;
- }
-
- if (!lttng_opt_mi && print_location) {
- ret = print_trace_archive_location(location,
- session_name);
- } else if (lttng_opt_mi) {
- ret = mi_lttng_rotate(writer, session_name, rotation_state,
- location);
- }
-
- if (ret < 0) {
- cmd_ret = CMD_ERROR;
- }
-
-end:
- lttng_rotation_handle_destroy(handle);
- return cmd_ret;
-error:
- cmd_ret = CMD_ERROR;
- goto end;
-}
-
-/*
- * cmd_rotate
- *
- * The 'rotate <options>' first level command
- */
-int cmd_rotate(int argc, const char **argv)
-{
- int opt, ret;
- enum cmd_error_code cmd_ret = CMD_SUCCESS;
- int popt_ret;
- static poptContext pc;
- char *session_name = NULL;
- bool free_session_name = false;
-
- pc = poptGetContext(NULL, argc, argv, long_options, 0);
- popt_ret = poptReadDefaultConfig(pc, 0);
- if (popt_ret) {
- ERR("poptReadDefaultConfig");
- goto error;
- }
-
- while ((opt = poptGetNextOpt(pc)) != -1) {
- switch (opt) {
- case OPT_HELP:
- SHOW_HELP();
- goto end;
- case OPT_LIST_OPTIONS:
- list_cmd_options(stdout, long_options);
- goto end;
- default:
- cmd_ret = CMD_UNDEFINED;
- goto end;
- }
- }
-
- opt_session_name = (char*) poptGetArg(pc);
-
- if (!opt_session_name) {
- session_name = get_session_name();
- if (!session_name) {
- goto error;
- }
- free_session_name = true;
- } else {
- session_name = opt_session_name;
- }
-
- /* Mi check */
- if (lttng_opt_mi) {
- writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
- if (!writer) {
- goto error;
- }
-
- /* Open rotate command */
- ret = mi_lttng_writer_command_open(writer,
- mi_lttng_element_command_rotate);
- if (ret) {
- goto error;
- }
-
- /* Open output element */
- ret = mi_lttng_writer_open_element(writer,
- mi_lttng_element_command_output);
- if (ret) {
- goto error;
- }
- }
-
- cmd_ret = rotate_tracing(session_name);
-
- /* Mi closing */
- if (lttng_opt_mi) {
- /* Close output element */
- ret = mi_lttng_writer_close_element(writer);
- if (ret) {
- goto error;
- }
- /* Success ? */
- ret = mi_lttng_writer_write_element_bool(writer,
- mi_lttng_element_command_success,
- cmd_ret == CMD_SUCCESS);
- if (ret) {
- goto error;
- }
-
- /* Command element close */
- ret = mi_lttng_writer_command_close(writer);
- if (ret) {
- goto error;
- }
- }
-
- /* Mi clean-up */
- if (writer && mi_lttng_writer_destroy(writer)) {
- goto error;
- }
-end:
- poptFreeContext(pc);
- if (free_session_name) {
- free(session_name);
- }
-
- return cmd_ret;
-error:
- cmd_ret = CMD_ERROR;
- goto end;
-}
projects / lttng-tools.git / blobdiff