X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Factions%2Fstart-session.c;fp=src%2Fcommon%2Factions%2Fstart-session.c;h=0000000000000000000000000000000000000000;hp=da7aad81fc7f0e4773183f5802e112fb50dfcbd4;hb=a6bc4ca9d659caf016ef932fcd944029737ac57c;hpb=97535efaa975ca52bf02c2d5e76351bfd2e3defa diff --git a/src/common/actions/start-session.c b/src/common/actions/start-session.c deleted file mode 100644 index da7aad81f..000000000 --- a/src/common/actions/start-session.c +++ /dev/null @@ -1,439 +0,0 @@ -/* - * Copyright (C) 2019 Simon Marchi - * - * SPDX-License-Identifier: LGPL-2.1-only - * - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -#define IS_START_SESSION_ACTION(action) \ - (lttng_action_get_type(action) == LTTNG_ACTION_TYPE_START_SESSION) - -struct lttng_action_start_session { - struct lttng_action parent; - - /* Owned by this. */ - char *session_name; - struct lttng_rate_policy *policy; -}; - -struct lttng_action_start_session_comm { - /* Includes the trailing \0. */ - uint32_t session_name_len; - - /* - * Variable data: - * - * - session name (null terminated) - * - policy - */ - char data[]; -} LTTNG_PACKED; - -static const struct lttng_rate_policy * -lttng_action_start_session_internal_get_rate_policy( - const struct lttng_action *action); - -static struct lttng_action_start_session *action_start_session_from_action( - struct lttng_action *action) -{ - LTTNG_ASSERT(action); - - return container_of(action, struct lttng_action_start_session, parent); -} - -static const struct lttng_action_start_session * -action_start_session_from_action_const(const struct lttng_action *action) -{ - LTTNG_ASSERT(action); - - return container_of(action, struct lttng_action_start_session, parent); -} - -static bool lttng_action_start_session_validate(struct lttng_action *action) -{ - bool valid; - struct lttng_action_start_session *action_start_session; - - if (!action) { - valid = false; - goto end; - } - - action_start_session = action_start_session_from_action(action); - - /* A non-empty session name is mandatory. */ - if (!action_start_session->session_name || - strlen(action_start_session->session_name) == 0) { - valid = false; - goto end; - } - - valid = true; -end: - return valid; -} - -static bool lttng_action_start_session_is_equal( - const struct lttng_action *_a, const struct lttng_action *_b) -{ - bool is_equal = false; - struct lttng_action_start_session *a, *b; - - a = container_of(_a, struct lttng_action_start_session, parent); - b = container_of(_b, struct lttng_action_start_session, parent); - - /* Action is not valid if this is not true. */ - LTTNG_ASSERT(a->session_name); - LTTNG_ASSERT(b->session_name); - if (strcmp(a->session_name, b->session_name)) { - goto end; - } - - is_equal = lttng_rate_policy_is_equal(a->policy, b->policy); -end: - return is_equal; -} - -static int lttng_action_start_session_serialize( - struct lttng_action *action, struct lttng_payload *payload) -{ - struct lttng_action_start_session *action_start_session; - struct lttng_action_start_session_comm comm; - size_t session_name_len; - int ret; - - LTTNG_ASSERT(action); - LTTNG_ASSERT(payload); - - action_start_session = action_start_session_from_action(action); - - LTTNG_ASSERT(action_start_session->session_name); - - DBG("Serializing start session action: session-name: %s", - action_start_session->session_name); - - session_name_len = strlen(action_start_session->session_name) + 1; - comm.session_name_len = session_name_len; - - ret = lttng_dynamic_buffer_append(&payload->buffer, &comm, sizeof(comm)); - if (ret) { - ret = -1; - goto end; - } - - ret = lttng_dynamic_buffer_append(&payload->buffer, - action_start_session->session_name, session_name_len); - if (ret) { - ret = -1; - goto end; - } - - ret = lttng_rate_policy_serialize( - action_start_session->policy, payload); - if (ret) { - ret = -1; - goto end; - } - - ret = 0; -end: - return ret; -} - -static void lttng_action_start_session_destroy(struct lttng_action *action) -{ - struct lttng_action_start_session *action_start_session; - - if (!action) { - goto end; - } - - action_start_session = action_start_session_from_action(action); - - lttng_rate_policy_destroy(action_start_session->policy); - free(action_start_session->session_name); - free(action_start_session); - -end: - return; -} - -ssize_t lttng_action_start_session_create_from_payload( - struct lttng_payload_view *view, - struct lttng_action **p_action) -{ - ssize_t consumed_len, ret; - const struct lttng_action_start_session_comm *comm; - const char *session_name; - struct lttng_action *action = NULL; - enum lttng_action_status status; - struct lttng_rate_policy *policy = NULL; - - comm = (typeof(comm)) view->buffer.data; - session_name = (const char *) &comm->data; - - /* Session name */ - if (!lttng_buffer_view_contains_string(&view->buffer, session_name, - comm->session_name_len)) { - consumed_len = -1; - goto end; - } - consumed_len = sizeof(*comm) + comm->session_name_len; - - /* Rate policy. */ - { - struct lttng_payload_view policy_view = - lttng_payload_view_from_view( - view, consumed_len, -1); - ret = lttng_rate_policy_create_from_payload( - &policy_view, &policy); - if (ret < 0) { - consumed_len = -1; - goto end; - } - consumed_len += ret; - } - - action = lttng_action_start_session_create(); - if (!action) { - consumed_len = -1; - goto end; - } - - status = lttng_action_start_session_set_session_name( - action, session_name); - if (status != LTTNG_ACTION_STATUS_OK) { - consumed_len = -1; - goto end; - } - - LTTNG_ASSERT(policy); - status = lttng_action_start_session_set_rate_policy(action, policy); - if (status != LTTNG_ACTION_STATUS_OK) { - consumed_len = -1; - goto end; - } - - *p_action = action; - action = NULL; - -end: - lttng_rate_policy_destroy(policy); - lttng_action_start_session_destroy(action); - - return consumed_len; -} - -static enum lttng_error_code lttng_action_start_session_mi_serialize( - const struct lttng_action *action, struct mi_writer *writer) -{ - int ret; - enum lttng_error_code ret_code; - enum lttng_action_status status; - const char *session_name = NULL; - const struct lttng_rate_policy *policy = NULL; - - LTTNG_ASSERT(action); - LTTNG_ASSERT(IS_START_SESSION_ACTION(action)); - - status = lttng_action_start_session_get_session_name( - action, &session_name); - LTTNG_ASSERT(status == LTTNG_ACTION_STATUS_OK); - LTTNG_ASSERT(session_name != NULL); - - status = lttng_action_start_session_get_rate_policy(action, &policy); - LTTNG_ASSERT(status == LTTNG_ACTION_STATUS_OK); - LTTNG_ASSERT(policy != NULL); - - /* Open action start session element. */ - ret = mi_lttng_writer_open_element( - writer, mi_lttng_element_action_start_session); - if (ret) { - goto mi_error; - } - - /* Session name. */ - ret = mi_lttng_writer_write_element_string( - writer, mi_lttng_element_session_name, session_name); - if (ret) { - goto mi_error; - } - - /* Rate policy. */ - ret_code = lttng_rate_policy_mi_serialize(policy, writer); - if (ret_code != LTTNG_OK) { - goto end; - } - - /* Close action start session element. */ - ret = mi_lttng_writer_close_element(writer); - if (ret) { - goto mi_error; - } - - ret_code = LTTNG_OK; - goto end; - -mi_error: - ret_code = LTTNG_ERR_MI_IO_FAIL; -end: - return ret_code; -} - -struct lttng_action *lttng_action_start_session_create(void) -{ - struct lttng_action *action = NULL; - struct lttng_rate_policy *policy = NULL; - enum lttng_action_status status; - - /* Create a every N = 1 rate policy. */ - policy = lttng_rate_policy_every_n_create(1); - if (!policy) { - goto end; - } - - action = zmalloc(sizeof(struct lttng_action_start_session)); - if (!action) { - goto end; - } - - lttng_action_init(action, LTTNG_ACTION_TYPE_START_SESSION, - lttng_action_start_session_validate, - lttng_action_start_session_serialize, - lttng_action_start_session_is_equal, - lttng_action_start_session_destroy, - lttng_action_start_session_internal_get_rate_policy, - lttng_action_generic_add_error_query_results, - lttng_action_start_session_mi_serialize); - - status = lttng_action_start_session_set_rate_policy(action, policy); - if (status != LTTNG_ACTION_STATUS_OK) { - free(action); - action = NULL; - goto end; - } - -end: - lttng_rate_policy_destroy(policy); - return action; -} - -enum lttng_action_status lttng_action_start_session_set_session_name( - struct lttng_action *action, const char *session_name) -{ - struct lttng_action_start_session *action_start_session; - enum lttng_action_status status; - - if (!action || !IS_START_SESSION_ACTION(action) || !session_name || - strlen(session_name) == 0) { - status = LTTNG_ACTION_STATUS_INVALID; - goto end; - } - - action_start_session = action_start_session_from_action(action); - - free(action_start_session->session_name); - - action_start_session->session_name = strdup(session_name); - if (!action_start_session->session_name) { - status = LTTNG_ACTION_STATUS_ERROR; - goto end; - } - - status = LTTNG_ACTION_STATUS_OK; -end: - return status; -} - -enum lttng_action_status lttng_action_start_session_get_session_name( - const struct lttng_action *action, const char **session_name) -{ - const struct lttng_action_start_session *action_start_session; - enum lttng_action_status status; - - if (!action || !IS_START_SESSION_ACTION(action) || !session_name) { - status = LTTNG_ACTION_STATUS_INVALID; - goto end; - } - - action_start_session = action_start_session_from_action_const(action); - - *session_name = action_start_session->session_name; - - status = LTTNG_ACTION_STATUS_OK; -end: - return status; -} - -enum lttng_action_status lttng_action_start_session_set_rate_policy( - struct lttng_action *action, - const struct lttng_rate_policy *policy) -{ - enum lttng_action_status status; - struct lttng_action_start_session *start_session_action; - struct lttng_rate_policy *copy = NULL; - - if (!action || !policy || !IS_START_SESSION_ACTION(action)) { - status = LTTNG_ACTION_STATUS_INVALID; - goto end; - } - - copy = lttng_rate_policy_copy(policy); - if (!copy) { - status = LTTNG_ACTION_STATUS_ERROR; - goto end; - } - - start_session_action = action_start_session_from_action(action); - - /* Release the previous rate policy .*/ - lttng_rate_policy_destroy(start_session_action->policy); - - /* Assign the policy. */ - start_session_action->policy = copy; - status = LTTNG_ACTION_STATUS_OK; - copy = NULL; - -end: - lttng_rate_policy_destroy(copy); - return status; -} - -enum lttng_action_status lttng_action_start_session_get_rate_policy( - const struct lttng_action *action, - const struct lttng_rate_policy **policy) -{ - enum lttng_action_status status; - const struct lttng_action_start_session *start_session_action; - - if (!action || !policy || !IS_START_SESSION_ACTION(action)) { - status = LTTNG_ACTION_STATUS_INVALID; - goto end; - } - - start_session_action = action_start_session_from_action_const(action); - - *policy = start_session_action->policy; - status = LTTNG_ACTION_STATUS_OK; -end: - return status; -} - -static const struct lttng_rate_policy * -lttng_action_start_session_internal_get_rate_policy( - const struct lttng_action *action) -{ - const struct lttng_action_start_session *_action; - _action = action_start_session_from_action_const(action); - - return _action->policy; -}