X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Fevent-rule%2Fpython-logging.c;fp=src%2Fcommon%2Fevent-rule%2Fpython-logging.c;h=0000000000000000000000000000000000000000;hp=4ec00c7efda462be4b83f6ef372c0b627782014a;hb=a6bc4ca9d659caf016ef932fcd944029737ac57c;hpb=97535efaa975ca52bf02c2d5e76351bfd2e3defa diff --git a/src/common/event-rule/python-logging.c b/src/common/event-rule/python-logging.c deleted file mode 100644 index 4ec00c7ef..000000000 --- a/src/common/event-rule/python-logging.c +++ /dev/null @@ -1,923 +0,0 @@ -/* - * Copyright (C) 2019 Jonathan Rajotte - * - * SPDX-License-Identifier: LGPL-2.1-only - * - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define IS_PYTHON_LOGGING_EVENT_RULE(rule) \ - (lttng_event_rule_get_type(rule) == LTTNG_EVENT_RULE_TYPE_PYTHON_LOGGING) - -static void lttng_event_rule_python_logging_destroy(struct lttng_event_rule *rule) -{ - struct lttng_event_rule_python_logging *python_logging; - - if (rule == NULL) { - return; - } - - python_logging = container_of( - rule, struct lttng_event_rule_python_logging, parent); - - lttng_log_level_rule_destroy(python_logging->log_level_rule); - free(python_logging->pattern); - free(python_logging->filter_expression); - free(python_logging->internal_filter.filter); - free(python_logging->internal_filter.bytecode); - free(python_logging); -} - -static bool lttng_event_rule_python_logging_validate( - const struct lttng_event_rule *rule) -{ - bool valid = false; - struct lttng_event_rule_python_logging *python_logging; - - if (!rule) { - goto end; - } - - python_logging = container_of( - rule, struct lttng_event_rule_python_logging, parent); - - /* Required field. */ - if (!python_logging->pattern) { - ERR("Invalid python_logging event rule: a pattern must be set."); - goto end; - } - - valid = true; -end: - return valid; -} - -static int lttng_event_rule_python_logging_serialize( - const struct lttng_event_rule *rule, - struct lttng_payload *payload) -{ - int ret; - size_t pattern_len, filter_expression_len, header_offset; - size_t size_before_log_level_rule; - struct lttng_event_rule_python_logging *python_logging; - struct lttng_event_rule_python_logging_comm python_logging_comm; - struct lttng_event_rule_python_logging_comm *header; - - if (!rule || !IS_PYTHON_LOGGING_EVENT_RULE(rule)) { - ret = -1; - goto end; - } - - header_offset = payload->buffer.size; - - DBG("Serializing python_logging event rule."); - python_logging = container_of( - rule, struct lttng_event_rule_python_logging, parent); - - pattern_len = strlen(python_logging->pattern) + 1; - - if (python_logging->filter_expression != NULL) { - filter_expression_len = - strlen(python_logging->filter_expression) + 1; - } else { - filter_expression_len = 0; - } - - python_logging_comm.pattern_len = pattern_len; - python_logging_comm.filter_expression_len = filter_expression_len; - - ret = lttng_dynamic_buffer_append(&payload->buffer, &python_logging_comm, - sizeof(python_logging_comm)); - if (ret) { - goto end; - } - - ret = lttng_dynamic_buffer_append( - &payload->buffer, python_logging->pattern, pattern_len); - if (ret) { - goto end; - } - - ret = lttng_dynamic_buffer_append(&payload->buffer, python_logging->filter_expression, - filter_expression_len); - if (ret) { - goto end; - } - - size_before_log_level_rule = payload->buffer.size; - - ret = lttng_log_level_rule_serialize(python_logging->log_level_rule, payload); - if (ret < 0) { - goto end; - } - - header = (typeof(header)) ((char *) payload->buffer.data + header_offset); - header->log_level_rule_len = - payload->buffer.size - size_before_log_level_rule; - -end: - return ret; -} - -static bool lttng_event_rule_python_logging_is_equal( - const struct lttng_event_rule *_a, - const struct lttng_event_rule *_b) -{ - bool is_equal = false; - struct lttng_event_rule_python_logging *a, *b; - - a = container_of(_a, struct lttng_event_rule_python_logging, parent); - b = container_of(_b, struct lttng_event_rule_python_logging, parent); - - /* Quick checks. */ - - if (!!a->filter_expression != !!b->filter_expression) { - goto end; - } - - /* Long check. */ - LTTNG_ASSERT(a->pattern); - LTTNG_ASSERT(b->pattern); - if (strcmp(a->pattern, b->pattern)) { - goto end; - } - - if (a->filter_expression && b->filter_expression) { - if (strcmp(a->filter_expression, b->filter_expression)) { - goto end; - } - } else if (!!a->filter_expression != !!b->filter_expression) { - /* One is set; not the other. */ - goto end; - } - - if (!lttng_log_level_rule_is_equal( - a->log_level_rule, b->log_level_rule)) { - goto end; - } - - is_equal = true; -end: - return is_equal; -} - -/* - * On success ret is 0; - * - * On error ret is negative. - * - * An event with NO loglevel and the name is * will return NULL. - */ -static int generate_agent_filter( - const struct lttng_event_rule *rule, char **_agent_filter) -{ - int err; - int ret = 0; - char *agent_filter = NULL; - const char *pattern; - const char *filter; - const struct lttng_log_level_rule *log_level_rule = NULL; - enum lttng_event_rule_status status; - - LTTNG_ASSERT(rule); - LTTNG_ASSERT(_agent_filter); - - status = lttng_event_rule_python_logging_get_name_pattern(rule, &pattern); - if (status != LTTNG_EVENT_RULE_STATUS_OK) { - ret = -1; - goto end; - } - - status = lttng_event_rule_python_logging_get_filter(rule, &filter); - if (status == LTTNG_EVENT_RULE_STATUS_UNSET) { - filter = NULL; - } else if (status != LTTNG_EVENT_RULE_STATUS_OK) { - ret = -1; - goto end; - } - - - /* Don't add filter for the '*' event. */ - if (strcmp(pattern, "*") != 0) { - if (filter) { - err = asprintf(&agent_filter, - "(%s) && (logger_name == \"%s\")", - filter, pattern); - } else { - err = asprintf(&agent_filter, "logger_name == \"%s\"", - pattern); - } - - if (err < 0) { - PERROR("Failed to format agent filter string"); - ret = -1; - goto end; - } - } - - status = lttng_event_rule_python_logging_get_log_level_rule( - rule, &log_level_rule); - if (status == LTTNG_EVENT_RULE_STATUS_OK) { - enum lttng_log_level_rule_status llr_status; - const char *op; - int level; - - switch (lttng_log_level_rule_get_type(log_level_rule)) - { - case LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY: - llr_status = lttng_log_level_rule_exactly_get_level( - log_level_rule, &level); - op = "=="; - break; - case LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS: - llr_status = lttng_log_level_rule_at_least_as_severe_as_get_level( - log_level_rule, &level); - op = ">="; - break; - default: - abort(); - } - - if (llr_status != LTTNG_LOG_LEVEL_RULE_STATUS_OK) { - ret = -1; - goto end; - } - - if (filter || agent_filter) { - char *new_filter; - - err = asprintf(&new_filter, - "(%s) && (int_loglevel %s %d)", - agent_filter ? agent_filter : filter, - op, level); - if (agent_filter) { - free(agent_filter); - } - agent_filter = new_filter; - } else { - err = asprintf(&agent_filter, "int_loglevel %s %d", op, - level); - } - - if (err < 0) { - PERROR("Failed to format agent filter string"); - ret = -1; - goto end; - } - } - - *_agent_filter = agent_filter; - agent_filter = NULL; - -end: - free(agent_filter); - return ret; -} - -static enum lttng_error_code -lttng_event_rule_python_logging_generate_filter_bytecode( - struct lttng_event_rule *rule, - const struct lttng_credentials *creds) -{ - int ret; - enum lttng_error_code ret_code; - struct lttng_event_rule_python_logging *python_logging; - enum lttng_event_rule_status status; - const char *filter; - struct lttng_bytecode *bytecode = NULL; - char *agent_filter; - - LTTNG_ASSERT(rule); - - python_logging = container_of( - rule, struct lttng_event_rule_python_logging, parent); - - status = lttng_event_rule_python_logging_get_filter(rule, &filter); - if (status == LTTNG_EVENT_RULE_STATUS_UNSET) { - filter = NULL; - } else if (status != LTTNG_EVENT_RULE_STATUS_OK) { - ret_code = LTTNG_ERR_FILTER_INVAL; - goto end; - } - - if (filter && filter[0] == '\0') { - ret_code = LTTNG_ERR_FILTER_INVAL; - goto error; - } - - ret = generate_agent_filter(rule, &agent_filter); - if (ret) { - ret_code = LTTNG_ERR_FILTER_INVAL; - goto error; - } - - python_logging->internal_filter.filter = agent_filter; - - if (python_logging->internal_filter.filter == NULL) { - ret_code = LTTNG_OK; - goto end; - } - - ret = run_as_generate_filter_bytecode( - python_logging->internal_filter.filter, creds, - &bytecode); - if (ret) { - ret_code = LTTNG_ERR_FILTER_INVAL; - goto end; - } - - python_logging->internal_filter.bytecode = bytecode; - bytecode = NULL; - ret_code = LTTNG_OK; - -error: -end: - free(bytecode); - return ret_code; -} - -static const char *lttng_event_rule_python_logging_get_internal_filter( - const struct lttng_event_rule *rule) -{ - struct lttng_event_rule_python_logging *python_logging; - - LTTNG_ASSERT(rule); - python_logging = container_of( - rule, struct lttng_event_rule_python_logging, parent); - return python_logging->internal_filter.filter; -} - -static const struct lttng_bytecode * -lttng_event_rule_python_logging_get_internal_filter_bytecode( - const struct lttng_event_rule *rule) -{ - struct lttng_event_rule_python_logging *python_logging; - - LTTNG_ASSERT(rule); - python_logging = container_of( - rule, struct lttng_event_rule_python_logging, parent); - return python_logging->internal_filter.bytecode; -} - -static enum lttng_event_rule_generate_exclusions_status -lttng_event_rule_python_logging_generate_exclusions( - const struct lttng_event_rule *rule, - struct lttng_event_exclusion **_exclusions) -{ - /* Unsupported. */ - *_exclusions = NULL; - return LTTNG_EVENT_RULE_GENERATE_EXCLUSIONS_STATUS_NONE; -} - -static unsigned long lttng_event_rule_python_logging_hash( - const struct lttng_event_rule *rule) -{ - unsigned long hash; - struct lttng_event_rule_python_logging *tp_rule = - container_of(rule, typeof(*tp_rule), parent); - - hash = hash_key_ulong((void *) LTTNG_EVENT_RULE_TYPE_PYTHON_LOGGING, - lttng_ht_seed); - hash ^= hash_key_str(tp_rule->pattern, lttng_ht_seed); - - if (tp_rule->filter_expression) { - hash ^= hash_key_str(tp_rule->filter_expression, lttng_ht_seed); - } - - if (tp_rule->log_level_rule) { - hash ^= lttng_log_level_rule_hash(tp_rule->log_level_rule); - } - - return hash; -} - -static struct lttng_event *lttng_event_rule_python_logging_generate_lttng_event( - const struct lttng_event_rule *rule) -{ - int ret; - const struct lttng_event_rule_python_logging *python_logging; - struct lttng_event *local_event = NULL; - struct lttng_event *event = NULL; - enum lttng_loglevel_type loglevel_type; - int loglevel_value = 0; - enum lttng_event_rule_status status; - const struct lttng_log_level_rule *log_level_rule; - - python_logging = container_of( - rule, const struct lttng_event_rule_python_logging, parent); - - local_event = zmalloc(sizeof(*local_event)); - if (!local_event) { - goto error; - } - - local_event->type = LTTNG_EVENT_TRACEPOINT; - ret = lttng_strncpy(local_event->name, python_logging->pattern, - sizeof(local_event->name)); - if (ret) { - ERR("Truncation occurred when copying event rule pattern to `lttng_event` structure: pattern = '%s'", - python_logging->pattern); - goto error; - } - - - /* Map the log level rule to an equivalent lttng_loglevel. */ - status = lttng_event_rule_python_logging_get_log_level_rule( - rule, &log_level_rule); - if (status == LTTNG_EVENT_RULE_STATUS_UNSET) { - loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; - loglevel_value = 0; - } else if (status == LTTNG_EVENT_RULE_STATUS_OK) { - enum lttng_log_level_rule_status llr_status; - - switch (lttng_log_level_rule_get_type(log_level_rule)) { - case LTTNG_LOG_LEVEL_RULE_TYPE_EXACTLY: - llr_status = lttng_log_level_rule_exactly_get_level( - log_level_rule, &loglevel_value); - loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; - break; - case LTTNG_LOG_LEVEL_RULE_TYPE_AT_LEAST_AS_SEVERE_AS: - llr_status = lttng_log_level_rule_at_least_as_severe_as_get_level( - log_level_rule, &loglevel_value); - loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; - break; - default: - abort(); - break; - } - - if (llr_status != LTTNG_LOG_LEVEL_RULE_STATUS_OK) { - goto error; - } - } else { - goto error; - } - - local_event->loglevel_type = loglevel_type; - local_event->loglevel = loglevel_value; - - event = local_event; - local_event = NULL; -error: - free(local_event); - return event; -} - -static enum lttng_error_code lttng_event_rule_python_logging_mi_serialize( - const struct lttng_event_rule *rule, struct mi_writer *writer) -{ - int ret; - enum lttng_error_code ret_code; - enum lttng_event_rule_status status; - const char *filter = NULL; - const char *name_pattern = NULL; - const struct lttng_log_level_rule *log_level_rule = NULL; - - LTTNG_ASSERT(rule); - LTTNG_ASSERT(writer); - LTTNG_ASSERT(IS_PYTHON_LOGGING_EVENT_RULE(rule)); - - status = lttng_event_rule_python_logging_get_name_pattern( - rule, &name_pattern); - LTTNG_ASSERT(status == LTTNG_EVENT_RULE_STATUS_OK); - LTTNG_ASSERT(name_pattern); - - status = lttng_event_rule_python_logging_get_filter(rule, &filter); - LTTNG_ASSERT(status == LTTNG_EVENT_RULE_STATUS_OK || - status == LTTNG_EVENT_RULE_STATUS_UNSET); - - status = lttng_event_rule_python_logging_get_log_level_rule( - rule, &log_level_rule); - LTTNG_ASSERT(status == LTTNG_EVENT_RULE_STATUS_OK || - status == LTTNG_EVENT_RULE_STATUS_UNSET); - - /* Open event rule python logging element. */ - ret = mi_lttng_writer_open_element( - writer, mi_lttng_element_event_rule_python_logging); - if (ret) { - goto mi_error; - } - - /* Name pattern. */ - ret = mi_lttng_writer_write_element_string(writer, - mi_lttng_element_event_rule_name_pattern, name_pattern); - if (ret) { - goto mi_error; - } - - /* Filter expression. */ - if (filter != NULL) { - ret = mi_lttng_writer_write_element_string(writer, - mi_lttng_element_event_rule_filter_expression, - filter); - if (ret) { - goto mi_error; - } - } - - /* Log level rule. */ - if (log_level_rule) { - ret_code = lttng_log_level_rule_mi_serialize( - log_level_rule, writer); - if (ret_code != LTTNG_OK) { - goto end; - } - } - - /* Close event rule python logging 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_event_rule *lttng_event_rule_python_logging_create(void) -{ - struct lttng_event_rule *rule = NULL; - struct lttng_event_rule_python_logging *tp_rule; - enum lttng_event_rule_status status; - - tp_rule = zmalloc(sizeof(struct lttng_event_rule_python_logging)); - if (!tp_rule) { - goto end; - } - - rule = &tp_rule->parent; - lttng_event_rule_init(&tp_rule->parent, LTTNG_EVENT_RULE_TYPE_PYTHON_LOGGING); - tp_rule->parent.validate = lttng_event_rule_python_logging_validate; - tp_rule->parent.serialize = lttng_event_rule_python_logging_serialize; - tp_rule->parent.equal = lttng_event_rule_python_logging_is_equal; - tp_rule->parent.destroy = lttng_event_rule_python_logging_destroy; - tp_rule->parent.generate_filter_bytecode = - lttng_event_rule_python_logging_generate_filter_bytecode; - tp_rule->parent.get_filter = - lttng_event_rule_python_logging_get_internal_filter; - tp_rule->parent.get_filter_bytecode = - lttng_event_rule_python_logging_get_internal_filter_bytecode; - tp_rule->parent.generate_exclusions = - lttng_event_rule_python_logging_generate_exclusions; - tp_rule->parent.hash = lttng_event_rule_python_logging_hash; - tp_rule->parent.generate_lttng_event = - lttng_event_rule_python_logging_generate_lttng_event; - tp_rule->parent.mi_serialize = lttng_event_rule_python_logging_mi_serialize; - - tp_rule->log_level_rule = NULL; - - /* Default pattern is '*'. */ - status = lttng_event_rule_python_logging_set_name_pattern(rule, "*"); - if (status != LTTNG_EVENT_RULE_STATUS_OK) { - lttng_event_rule_destroy(rule); - rule = NULL; - } - -end: - return rule; -} - -ssize_t lttng_event_rule_python_logging_create_from_payload( - struct lttng_payload_view *view, - struct lttng_event_rule **_event_rule) -{ - ssize_t ret, offset = 0; - enum lttng_event_rule_status status; - const struct lttng_event_rule_python_logging_comm *python_logging_comm; - const char *pattern; - const char *filter_expression = NULL; - struct lttng_buffer_view current_buffer_view; - struct lttng_event_rule *rule = NULL; - struct lttng_log_level_rule *log_level_rule = NULL; - - if (!_event_rule) { - ret = -1; - goto end; - } - - current_buffer_view = lttng_buffer_view_from_view( - &view->buffer, offset, sizeof(*python_logging_comm)); - if (!lttng_buffer_view_is_valid(¤t_buffer_view)) { - ERR("Failed to initialize from malformed event rule python_logging: buffer too short to contain header."); - ret = -1; - goto end; - } - - python_logging_comm = (typeof(python_logging_comm)) current_buffer_view.data; - - rule = lttng_event_rule_python_logging_create(); - if (!rule) { - ERR("Failed to create event rule python_logging."); - ret = -1; - goto end; - } - - /* Skip to payload. */ - offset += current_buffer_view.size; - - /* Map the pattern. */ - current_buffer_view = lttng_buffer_view_from_view( - &view->buffer, offset, python_logging_comm->pattern_len); - - if (!lttng_buffer_view_is_valid(¤t_buffer_view)) { - ret = -1; - goto end; - } - - pattern = current_buffer_view.data; - if (!lttng_buffer_view_contains_string(¤t_buffer_view, pattern, - python_logging_comm->pattern_len)) { - ret = -1; - goto end; - } - - /* Skip after the pattern. */ - offset += python_logging_comm->pattern_len; - - if (!python_logging_comm->filter_expression_len) { - goto skip_filter_expression; - } - - /* Map the filter_expression. */ - current_buffer_view = lttng_buffer_view_from_view(&view->buffer, offset, - python_logging_comm->filter_expression_len); - if (!lttng_buffer_view_is_valid(¤t_buffer_view)) { - ret = -1; - goto end; - } - - filter_expression = current_buffer_view.data; - if (!lttng_buffer_view_contains_string(¤t_buffer_view, - filter_expression, - python_logging_comm->filter_expression_len)) { - ret = -1; - goto end; - } - - /* Skip after the pattern. */ - offset += python_logging_comm->filter_expression_len; - -skip_filter_expression: - if (!python_logging_comm->log_level_rule_len) { - goto skip_log_level_rule; - } - - { - /* Map the log level rule. */ - struct lttng_payload_view current_payload_view = - lttng_payload_view_from_view(view, offset, - python_logging_comm->log_level_rule_len); - - ret = lttng_log_level_rule_create_from_payload( - ¤t_payload_view, &log_level_rule); - if (ret < 0) { - ret = -1; - goto end; - } - - LTTNG_ASSERT(ret == python_logging_comm->log_level_rule_len); - } - - /* Skip after the log level rule. */ - offset += python_logging_comm->log_level_rule_len; - -skip_log_level_rule: - - status = lttng_event_rule_python_logging_set_name_pattern(rule, pattern); - if (status != LTTNG_EVENT_RULE_STATUS_OK) { - ERR("Failed to set event rule python_logging pattern."); - ret = -1; - goto end; - } - - if (filter_expression) { - status = lttng_event_rule_python_logging_set_filter( - rule, filter_expression); - if (status != LTTNG_EVENT_RULE_STATUS_OK) { - ERR("Failed to set event rule python_logging pattern."); - ret = -1; - goto end; - } - } - - if (log_level_rule) { - status = lttng_event_rule_python_logging_set_log_level_rule( - rule, log_level_rule); - if (status != LTTNG_EVENT_RULE_STATUS_OK) { - ERR("Failed to set event rule python_logging log level rule."); - ret = -1; - goto end; - } - } - - *_event_rule = rule; - rule = NULL; - ret = offset; -end: - lttng_log_level_rule_destroy(log_level_rule); - lttng_event_rule_destroy(rule); - return ret; -} - -enum lttng_event_rule_status lttng_event_rule_python_logging_set_name_pattern( - struct lttng_event_rule *rule, const char *pattern) -{ - char *pattern_copy = NULL; - struct lttng_event_rule_python_logging *python_logging; - enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; - - if (!rule || !IS_PYTHON_LOGGING_EVENT_RULE(rule) || !pattern || - strlen(pattern) == 0) { - status = LTTNG_EVENT_RULE_STATUS_INVALID; - goto end; - } - - python_logging = container_of( - rule, struct lttng_event_rule_python_logging, parent); - pattern_copy = strdup(pattern); - if (!pattern_copy) { - status = LTTNG_EVENT_RULE_STATUS_ERROR; - goto end; - } - - /* Normalize the pattern. */ - strutils_normalize_star_glob_pattern(pattern_copy); - - free(python_logging->pattern); - - python_logging->pattern = pattern_copy; - pattern_copy = NULL; -end: - return status; -} - -enum lttng_event_rule_status lttng_event_rule_python_logging_get_name_pattern( - const struct lttng_event_rule *rule, const char **pattern) -{ - struct lttng_event_rule_python_logging *python_logging; - enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; - - if (!rule || !IS_PYTHON_LOGGING_EVENT_RULE(rule) || !pattern) { - status = LTTNG_EVENT_RULE_STATUS_INVALID; - goto end; - } - - python_logging = container_of( - rule, struct lttng_event_rule_python_logging, parent); - if (!python_logging->pattern) { - status = LTTNG_EVENT_RULE_STATUS_UNSET; - goto end; - } - - *pattern = python_logging->pattern; -end: - return status; -} - -enum lttng_event_rule_status lttng_event_rule_python_logging_set_filter( - struct lttng_event_rule *rule, const char *expression) -{ - char *expression_copy = NULL; - struct lttng_event_rule_python_logging *python_logging; - enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; - - if (!rule || !IS_PYTHON_LOGGING_EVENT_RULE(rule) || !expression || - strlen(expression) == 0) { - status = LTTNG_EVENT_RULE_STATUS_INVALID; - goto end; - } - - python_logging = container_of( - rule, struct lttng_event_rule_python_logging, parent); - expression_copy = strdup(expression); - if (!expression_copy) { - PERROR("Failed to copy filter expression"); - status = LTTNG_EVENT_RULE_STATUS_ERROR; - goto end; - } - - if (python_logging->filter_expression) { - free(python_logging->filter_expression); - } - - python_logging->filter_expression = expression_copy; - expression_copy = NULL; -end: - return status; -} - -enum lttng_event_rule_status lttng_event_rule_python_logging_get_filter( - const struct lttng_event_rule *rule, const char **expression) -{ - struct lttng_event_rule_python_logging *python_logging; - enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; - - if (!rule || !IS_PYTHON_LOGGING_EVENT_RULE(rule) || !expression) { - status = LTTNG_EVENT_RULE_STATUS_INVALID; - goto end; - } - - python_logging = container_of( - rule, struct lttng_event_rule_python_logging, parent); - if (!python_logging->filter_expression) { - status = LTTNG_EVENT_RULE_STATUS_UNSET; - goto end; - } - - *expression = python_logging->filter_expression; -end: - return status; -} - -static bool log_level_rule_valid(const struct lttng_log_level_rule *rule) -{ - /* - * For python, custom log level are possible, it is not clear if - * negative value are accepted (NOTSET == 0) but the source code - * validates against the int type implying that negative values - * are accepted. - */ - return true; -} - -enum lttng_event_rule_status lttng_event_rule_python_logging_set_log_level_rule( - struct lttng_event_rule *rule, - const struct lttng_log_level_rule *log_level_rule) -{ - struct lttng_event_rule_python_logging *python_logging; - enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; - struct lttng_log_level_rule *copy = NULL; - - if (!rule || !IS_PYTHON_LOGGING_EVENT_RULE(rule)) { - status = LTTNG_EVENT_RULE_STATUS_INVALID; - goto end; - } - - python_logging = container_of( - rule, struct lttng_event_rule_python_logging, parent); - - if (!log_level_rule_valid(log_level_rule)) { - status = LTTNG_EVENT_RULE_STATUS_INVALID; - goto end; - } - - copy = lttng_log_level_rule_copy(log_level_rule); - if (copy == NULL) { - status = LTTNG_EVENT_RULE_STATUS_ERROR; - goto end; - } - - if (python_logging->log_level_rule) { - lttng_log_level_rule_destroy(python_logging->log_level_rule); - } - - python_logging->log_level_rule = copy; - -end: - return status; -} - -enum lttng_event_rule_status lttng_event_rule_python_logging_get_log_level_rule( - const struct lttng_event_rule *rule, - const struct lttng_log_level_rule **log_level_rule - ) -{ - struct lttng_event_rule_python_logging *python_logging; - enum lttng_event_rule_status status = LTTNG_EVENT_RULE_STATUS_OK; - - if (!rule || !IS_PYTHON_LOGGING_EVENT_RULE(rule) || !log_level_rule) { - status = LTTNG_EVENT_RULE_STATUS_INVALID; - goto end; - } - - python_logging = container_of( - rule, struct lttng_event_rule_python_logging, parent); - if (python_logging->log_level_rule == NULL) { - status = LTTNG_EVENT_RULE_STATUS_UNSET; - goto end; - } - - *log_level_rule = python_logging->log_level_rule; -end: - return status; -}