--- /dev/null
+/*************************************************************************//**
+ *
+ * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
+ *
+ * Unless otherwise specified, all software contained herein is
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ ****************************************************************************/
+/**************************************************************************//**
+ * @file
+ * Implementation of EVEL functions relating to the State Change.
+ *
+ ****************************************************************************/
+
+#include <string.h>
+#include <assert.h>
+#include <stdlib.h>
+
+#include "evel_throttle.h"
+
+/**************************************************************************//**
+ * Create a new State Change event.
+ *
+ * @note The mandatory fields on the State Change must be supplied to this
+ * factory function and are immutable once set. Optional fields have
+ * explicit setter functions, but again values may only be set once
+ * so that the State Change has immutable properties.
+ *
+ * @param event_name Unique Event Name confirming Domain AsdcModel Description
+ * @param event_id A universal identifier of the event for: troubleshooting correlation, analysis, etc
+ * @param new_state The new state of the reporting entity.
+ * @param old_state The old state of the reporting entity.
+ * @param interface The card or port name of the reporting entity.
+ *
+ * @returns pointer to the newly manufactured ::EVENT_STATE_CHANGE. If the
+ * event is not used it must be released using
+ * ::evel_free_state_change
+ * @retval NULL Failed to create the event.
+ *****************************************************************************/
+EVENT_STATE_CHANGE * evel_new_state_change(const char* ev_name,
+ const char *ev_id,
+ const EVEL_ENTITY_STATE new_state,
+ const EVEL_ENTITY_STATE old_state,
+ const char * const interface)
+{
+ EVENT_STATE_CHANGE * state_change = NULL;
+ EVEL_ENTER();
+
+ /***************************************************************************/
+ /* Check preconditions. */
+ /***************************************************************************/
+ assert(new_state < EVEL_MAX_ENTITY_STATES);
+ assert(old_state < EVEL_MAX_ENTITY_STATES);
+ assert(interface != NULL);
+
+ /***************************************************************************/
+ /* Allocate the State Change. */
+ /***************************************************************************/
+ state_change = malloc(sizeof(EVENT_STATE_CHANGE));
+ if (state_change == NULL)
+ {
+ log_error_state("Out of memory");
+ goto exit_label;
+ }
+ memset(state_change, 0, sizeof(EVENT_STATE_CHANGE));
+ EVEL_DEBUG("New State Change is at %lp", state_change);
+
+ /***************************************************************************/
+ /* Initialize the header & the State Change fields. Optional string */
+ /* values are uninitialized (NULL). */
+ /***************************************************************************/
+ evel_init_header_nameid(&state_change->header,ev_name,ev_id);
+ state_change->header.event_domain = EVEL_DOMAIN_STATE_CHANGE;
+ state_change->major_version = EVEL_STATE_CHANGE_MAJOR_VERSION;
+ state_change->minor_version = EVEL_STATE_CHANGE_MINOR_VERSION;
+ state_change->new_state = new_state;
+ state_change->old_state = old_state;
+ state_change->state_interface = strdup(interface);
+ dlist_initialize(&state_change->additional_fields);
+
+exit_label:
+ EVEL_EXIT();
+ return state_change;
+}
+
+/**************************************************************************//**
+ * Free a State Change.
+ *
+ * Free off the State Change supplied. Will free all the contained allocated
+ * memory.
+ *
+ * @note It does not free the State Change itself, since that may be part of a
+ * larger structure.
+ *****************************************************************************/
+void evel_free_state_change(EVENT_STATE_CHANGE * const state_change)
+{
+ STATE_CHANGE_ADDL_FIELD * addl_field = NULL;
+
+ EVEL_ENTER();
+
+ /***************************************************************************/
+ /* Check preconditions. As an internal API we don't allow freeing NULL */
+ /* events as we do on the public API. */
+ /***************************************************************************/
+ assert(state_change != NULL);
+ assert(state_change->header.event_domain == EVEL_DOMAIN_STATE_CHANGE);
+
+ /***************************************************************************/
+ /* Free all internal strings then the header itself. */
+ /***************************************************************************/
+ addl_field = dlist_pop_last(&state_change->additional_fields);
+ while (addl_field != NULL)
+ {
+ EVEL_DEBUG("Freeing Additional Field (%s, %s)",
+ addl_field->name,
+ addl_field->value);
+ free(addl_field->name);
+ free(addl_field->value);
+ free(addl_field);
+ addl_field = dlist_pop_last(&state_change->additional_fields);
+ }
+ free(state_change->state_interface);
+ evel_free_header(&state_change->header);
+
+ EVEL_EXIT();
+}
+
+/**************************************************************************//**
+ * Set the Event Type property of the State Change.
+ *
+ * @note The property is treated as immutable: it is only valid to call
+ * the setter once. However, we don't assert if the caller tries to
+ * overwrite, just ignoring the update instead.
+ *
+ * @param state_change Pointer to the ::EVENT_STATE_CHANGE.
+ * @param type The Event Type to be set. ASCIIZ string. The caller
+ * does not need to preserve the value once the function
+ * returns.
+ *****************************************************************************/
+void evel_state_change_type_set(EVENT_STATE_CHANGE * const state_change,
+ const char * const type)
+{
+ EVEL_ENTER();
+
+ /***************************************************************************/
+ /* Check preconditions and call evel_header_type_set. */
+ /***************************************************************************/
+ assert(state_change != NULL);
+ assert(state_change->header.event_domain == EVEL_DOMAIN_STATE_CHANGE);
+ evel_header_type_set(&state_change->header, type);
+
+ EVEL_EXIT();
+}
+
+/**************************************************************************//**
+ * Add an additional field name/value pair to the State Change.
+ *
+ * The name and value are null delimited ASCII strings. The library takes
+ * a copy so the caller does not have to preserve values after the function
+ * returns.
+ *
+ * @param state_change Pointer to the ::EVENT_STATE_CHANGE.
+ * @param name ASCIIZ string with the attribute's name. The caller
+ * does not need to preserve the value once the function
+ * returns.
+ * @param value ASCIIZ string with the attribute's value. The caller
+ * does not need to preserve the value once the function
+ * returns.
+ *****************************************************************************/
+void evel_state_change_addl_field_add(EVENT_STATE_CHANGE * const state_change,
+ const char * const name,
+ const char * const value)
+{
+ STATE_CHANGE_ADDL_FIELD * addl_field = NULL;
+ EVEL_ENTER();
+
+ /***************************************************************************/
+ /* Check preconditions. */
+ /***************************************************************************/
+ assert(state_change != NULL);
+ assert(state_change->header.event_domain == EVEL_DOMAIN_STATE_CHANGE);
+ assert(name != NULL);
+ assert(value != NULL);
+
+ EVEL_DEBUG("Adding name=%s value=%s", name, value);
+ addl_field = malloc(sizeof(STATE_CHANGE_ADDL_FIELD));
+ assert(addl_field != NULL);
+ memset(addl_field, 0, sizeof(STATE_CHANGE_ADDL_FIELD));
+ addl_field->name = strdup(name);
+ addl_field->value = strdup(value);
+ assert(addl_field->name != NULL);
+ assert(addl_field->value != NULL);
+
+ dlist_push_last(&state_change->additional_fields, addl_field);
+
+ EVEL_EXIT();
+}
+
+/**************************************************************************//**
+ * Encode the state change as a JSON state change.
+ *
+ * @param jbuf Pointer to the ::EVEL_JSON_BUFFER to encode into.
+ * @param state_change Pointer to the ::EVENT_STATE_CHANGE to encode.
+ *****************************************************************************/
+void evel_json_encode_state_change(EVEL_JSON_BUFFER * jbuf,
+ EVENT_STATE_CHANGE * state_change)
+{
+ STATE_CHANGE_ADDL_FIELD * addl_field = NULL;
+ DLIST_ITEM * addl_field_item = NULL;
+ char * new_state;
+ char * old_state;
+
+ EVEL_ENTER();
+
+ /***************************************************************************/
+ /* Check preconditions. */
+ /***************************************************************************/
+ assert(state_change != NULL);
+ assert(state_change->header.event_domain == EVEL_DOMAIN_STATE_CHANGE);
+
+ new_state = evel_entity_state(state_change->new_state);
+ old_state = evel_entity_state(state_change->old_state);
+
+ evel_json_encode_header(jbuf, &state_change->header);
+ evel_json_open_named_object(jbuf, "stateChangeFields");
+
+ /***************************************************************************/
+ /* Mandatory fields. */
+ /***************************************************************************/
+ evel_enc_kv_string(jbuf, "newState", new_state);
+ evel_enc_kv_string(jbuf, "oldState", old_state);
+ evel_enc_kv_string(jbuf, "stateInterface", state_change->state_interface);
+
+ /***************************************************************************/
+ /* Optional fields. */
+ /***************************************************************************/
+ evel_json_checkpoint(jbuf);
+ if (evel_json_open_opt_named_list(jbuf, "additionalFields"))
+ {
+ bool item_added = false;
+
+ addl_field_item = dlist_get_first(&state_change->additional_fields);
+ while (addl_field_item != NULL)
+ {
+ addl_field = (STATE_CHANGE_ADDL_FIELD *) addl_field_item->item;
+ assert(addl_field != NULL);
+
+ if (!evel_throttle_suppress_nv_pair(jbuf->throttle_spec,
+ "additionalFields",
+ addl_field->name))
+ {
+ evel_json_open_object(jbuf);
+ evel_enc_kv_string(jbuf, "name", addl_field->name);
+ evel_enc_kv_string(jbuf, "value", addl_field->value);
+ evel_json_close_object(jbuf);
+ item_added = true;
+ }
+ addl_field_item = dlist_get_next(addl_field_item);
+ }
+ evel_json_close_list(jbuf);
+
+ /*************************************************************************/
+ /* If we've not written anything, rewind to before we opened the list. */
+ /*************************************************************************/
+ if (!item_added)
+ {
+ evel_json_rewind(jbuf);
+ }
+ }
+
+ evel_enc_version(jbuf,
+ "stateChangeFieldsVersion",
+ state_change->major_version,state_change->minor_version);
+
+ evel_json_close_object(jbuf);
+
+ EVEL_EXIT();
+}
Code Review / demo.git / blobdiff