diff options
Diffstat (limited to 'VES5.0/evel/evel-library/code/evel_library/evel_heartbeat_fields.c')
-rw-r--r-- | VES5.0/evel/evel-library/code/evel_library/evel_heartbeat_fields.c | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/VES5.0/evel/evel-library/code/evel_library/evel_heartbeat_fields.c b/VES5.0/evel/evel-library/code/evel_library/evel_heartbeat_fields.c new file mode 100644 index 00000000..b1131449 --- /dev/null +++ b/VES5.0/evel/evel-library/code/evel_library/evel_heartbeat_fields.c @@ -0,0 +1,278 @@ +/**************************************************************************//** + * @file + * Implementation of EVEL functions relating to Heartbeat fields. + * + * License + * ------- + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: This product includes + * software developed by the AT&T. + * 4. Neither the name of AT&T nor the names of its contributors may be used to + * endorse or promote products derived from this software without specific + * prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY AT&T INTELLECTUAL PROPERTY ''AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL AT&T INTELLECTUAL PROPERTY BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + *****************************************************************************/ + +#include <string.h> +#include <assert.h> +#include <stdlib.h> + +#include "evel.h" +#include "evel_throttle.h" + +/**************************************************************************//** + * Create a new Heartbeat fields event. + * + * @note The mandatory fields on the Heartbeat fields 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 event has immutable properties. + * @param vendor_id The vendor id to encode in the event instance id. + * @param event_id The vendor event id to encode in the event instance id. + * @returns pointer to the newly manufactured ::EVENT_HEARTBEAT_FIELD. If the event + * is not used (i.e. posted) it must be released using + * ::evel_free_hrtbt_field. + * @retval NULL Failed to create the event. + *****************************************************************************/ +EVENT_HEARTBEAT_FIELD * evel_new_heartbeat_field(int interval) +{ + EVENT_HEARTBEAT_FIELD * event = NULL; + + EVEL_ENTER(); + + /***************************************************************************/ + /* Check preconditions. */ + /***************************************************************************/ + assert(interval > 0); + + /***************************************************************************/ + /* Allocate the Heartbeat fields event. */ + /***************************************************************************/ + event = malloc(sizeof(EVENT_HEARTBEAT_FIELD)); + if (event == NULL) + { + log_error_state("Out of memory"); + goto exit_label; + } + memset(event, 0, sizeof(EVENT_HEARTBEAT_FIELD)); + EVEL_DEBUG("New Heartbeat fields event is at %lp", event); + + /***************************************************************************/ + /* Initialize the header & the Heartbeat fields fields. */ + /***************************************************************************/ + evel_init_header(&event->header,"HeartbeatFields"); + event->header.event_domain = EVEL_DOMAIN_HEARTBEAT_FIELD; + event->major_version = EVEL_HEARTBEAT_FIELD_MAJOR_VERSION; + event->minor_version = EVEL_HEARTBEAT_FIELD_MINOR_VERSION; + + event->heartbeat_interval = interval; + dlist_initialize(&event->additional_info); + +exit_label: + + EVEL_EXIT(); + return event; +} + +/**************************************************************************//** + * Add a name/value pair to the Heartbeat fields, under the additionalFields array. + * + * 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 event Pointer to the Heartbeat fields event. + * @param name ASCIIZ string with the field's name. The caller does not + * need to preserve the value once the function returns. + * @param value ASCIIZ string with the field's value. The caller does not + * need to preserve the value once the function returns. + *****************************************************************************/ +void evel_hrtbt_field_addl_field_add(EVENT_HEARTBEAT_FIELD * const event, + const char * const name, + const char * const value) +{ + OTHER_FIELD * nv_pair = NULL; + + EVEL_ENTER(); + + /***************************************************************************/ + /* Check preconditions. */ + /***************************************************************************/ + assert(event != NULL); + assert(event->header.event_domain == EVEL_DOMAIN_HEARTBEAT_FIELD); + assert(name != NULL); + assert(value != NULL); + + EVEL_DEBUG("Adding name=%s value=%s", name, value); + nv_pair = malloc(sizeof(OTHER_FIELD)); + assert(nv_pair != NULL); + nv_pair->name = strdup(name); + nv_pair->value = strdup(value); + assert(nv_pair->name != NULL); + assert(nv_pair->value != NULL); + + dlist_push_last(&event->additional_info, nv_pair); + + EVEL_EXIT(); +} + +/**************************************************************************//** + * Set the Interval property of the Heartbeat fields event. + * + * @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 event Pointer to the Heartbeat fields event. + * @param product_id The vendor product id to be set. ASCIIZ string. The + * caller does not need to preserve the value once the + * function returns. + *****************************************************************************/ +void evel_hrtbt_interval_set(EVENT_HEARTBEAT_FIELD * const event, + const int interval) +{ + EVEL_ENTER(); + + /***************************************************************************/ + /* Check preconditions and call evel_set_option_string. */ + /***************************************************************************/ + assert(event != NULL); + assert(event->header.event_domain == EVEL_DOMAIN_HEARTBEAT_FIELD); + assert(interval > 0); + + event->heartbeat_interval = interval; + EVEL_EXIT(); +} + + +/**************************************************************************//** + * Encode the Heartbeat fields in JSON according to AT&T's schema for the + * event type. + * + * @param jbuf Pointer to the ::EVEL_JSON_BUFFER to encode into. + * @param event Pointer to the ::EVENT_HEADER to encode. + *****************************************************************************/ +void evel_json_encode_hrtbt_field(EVEL_JSON_BUFFER * const jbuf, + EVENT_HEARTBEAT_FIELD * const event) +{ + OTHER_FIELD * nv_pair = NULL; + DLIST_ITEM * dlist_item = NULL; + + EVEL_ENTER(); + + /***************************************************************************/ + /* Check preconditions. */ + /***************************************************************************/ + assert(event != NULL); + assert(event->header.event_domain == EVEL_DOMAIN_HEARTBEAT_FIELD); + + evel_json_encode_header(jbuf, &event->header); + evel_json_open_named_object(jbuf, "heartbeatField"); + + /***************************************************************************/ + /* Mandatory fields */ + /***************************************************************************/ + evel_enc_version(jbuf, "heartbeatFieldsVersion", event->major_version,event->minor_version); + evel_enc_kv_int(jbuf, "heartbeatInterval", event->heartbeat_interval); + + /***************************************************************************/ + /* Optional fields */ + /***************************************************************************/ + + /***************************************************************************/ + /* Checkpoint, so that we can wind back if all fields are suppressed. */ + /***************************************************************************/ + evel_json_checkpoint(jbuf); + if (evel_json_open_opt_named_list(jbuf, "additionalFields")) + { + bool added = false; + + dlist_item = dlist_get_first(&event->additional_info); + while (dlist_item != NULL) + { + nv_pair = (OTHER_FIELD *) dlist_item->item; + assert(nv_pair != NULL); + + if (!evel_throttle_suppress_nv_pair(jbuf->throttle_spec, + "additionalFields", + nv_pair->name)) + { + evel_json_open_object(jbuf); + evel_enc_kv_string(jbuf, "name", nv_pair->name); + evel_enc_kv_string(jbuf, "value", nv_pair->value); + evel_json_close_object(jbuf); + added = true; + } + dlist_item = dlist_get_next(dlist_item); + } + evel_json_close_list(jbuf); + + /*************************************************************************/ + /* If we've not written anything, rewind to before we opened the list. */ + /*************************************************************************/ + if (!added) + { + evel_json_rewind(jbuf); + } + } + + evel_json_close_object(jbuf); + + EVEL_EXIT(); +} + +/**************************************************************************//** + * Free a Heartbeat fields event. + * + * Free off the event supplied. Will free all the contained allocated memory. + * + * @note It does not free the event itself, since that may be part of a larger + * structure. + *****************************************************************************/ +void evel_free_hrtbt_field(EVENT_HEARTBEAT_FIELD * const event) +{ + OTHER_FIELD * nv_pair = NULL; + + EVEL_ENTER(); + + /***************************************************************************/ + /* Check preconditions. */ + /***************************************************************************/ + assert(event != NULL); + assert(event->header.event_domain == EVEL_DOMAIN_HEARTBEAT_FIELD); + + /***************************************************************************/ + /* Free all internal strings then the header itself. */ + /***************************************************************************/ + nv_pair = dlist_pop_last(&event->additional_info); + while (nv_pair != NULL) + { + EVEL_DEBUG("Freeing Other Field (%s, %s)", nv_pair->name, nv_pair->value); + free(nv_pair->name); + free(nv_pair->value); + free(nv_pair); + nv_pair = dlist_pop_last(&event->additional_info); + } + evel_free_header(&event->header); + + EVEL_EXIT(); +} |