summaryrefslogtreecommitdiffstats
path: root/VES5.0/evel/evel-library/code/evel_library/evel_event.c
blob: 9fbf3926617f799345bef3a1942d07c58fe974f5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
/**************************************************************************//**
 * @file
 * Implementation of EVEL functions relating to Event Headers - since
 * Heartbeats only contain the Event Header, the Heartbeat factory function is
 * here too.
 *
 * License
 * -------
 *
 * Copyright(c) <2016>, AT&T Intellectual Property.  All other rights reserved.
 *
 * 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 <sys/time.h>

#include "evel.h"
#include "evel_internal.h"
#include "evel_throttle.h"
#include "metadata.h"

/**************************************************************************//**
 * Unique sequence number for events from this VNF.
 *****************************************************************************/
static int event_sequence = 1;

/**************************************************************************//**
 * Set the next event_sequence to use.
 *
 * @param sequence      The next sequence number to use.
 *****************************************************************************/
void evel_set_next_event_sequence(const int sequence)
{
  EVEL_ENTER();

  EVEL_INFO("Setting event sequence to %d, was %d ", sequence, event_sequence);
  event_sequence = sequence;

  EVEL_EXIT();
}

/**************************************************************************//**
 * Create a new heartbeat event.
 *
 * @note that the heartbeat is just a "naked" commonEventHeader!
 *
 * @returns pointer to the newly manufactured ::EVENT_HEADER.  If the event is
 *          not used it must be released using ::evel_free_event
 * @retval  NULL  Failed to create the event.
 *****************************************************************************/
EVENT_HEADER * evel_new_heartbeat()
{
  EVENT_HEADER * heartbeat = NULL;
  EVEL_ENTER();

  /***************************************************************************/
  /* Allocate the header.                                                    */
  /***************************************************************************/
  heartbeat = malloc(sizeof(EVENT_HEADER));
  if (heartbeat == NULL)
  {
    log_error_state("Out of memory");
    goto exit_label;
  }
  memset(heartbeat, 0, sizeof(EVENT_HEADER));

  /***************************************************************************/
  /* Initialize the header.  Get a new event sequence number.  Note that if  */
  /* any memory allocation fails in here we will fail gracefully because     */
  /* everything downstream can cope with NULLs.                              */
  /***************************************************************************/
  evel_init_header(heartbeat,"Heartbeat");
  evel_force_option_string(&heartbeat->event_type, "Autonomous heartbeat");

exit_label:
  EVEL_EXIT();
  return heartbeat;
}

/**************************************************************************//**
 * Initialize a newly created event header.
 *
 * @param header  Pointer to the header being initialized.
 *****************************************************************************/
void evel_init_header(EVENT_HEADER * const header,const char *const eventname)
{
  char scratchpad[EVEL_MAX_STRING_LEN + 1] = {0};
  struct timeval tv;

  EVEL_ENTER();

  assert(header != NULL);

  gettimeofday(&tv, NULL);

  /***************************************************************************/
  /* Initialize the header.  Get a new event sequence number.  Note that if  */
  /* any memory allocation fails in here we will fail gracefully because     */
  /* everything downstream can cope with NULLs.                              */
  /***************************************************************************/
  header->event_domain = EVEL_DOMAIN_HEARTBEAT;
  snprintf(scratchpad, EVEL_MAX_STRING_LEN, "%d", event_sequence);
  header->event_id = strdup(scratchpad);
  if( eventname == NULL )
     header->event_name = strdup(functional_role);
  else
     header->event_name = strdup(eventname);
  header->last_epoch_microsec = tv.tv_usec + 1000000 * tv.tv_sec;
  header->priority = EVEL_PRIORITY_NORMAL;
  header->reporting_entity_name = strdup(openstack_vm_name());
  header->source_name = strdup(openstack_vm_name());
  header->sequence = event_sequence;
  header->start_epoch_microsec = header->last_epoch_microsec;
  header->major_version = EVEL_HEADER_MAJOR_VERSION;
  header->minor_version = EVEL_HEADER_MINOR_VERSION;
  event_sequence++;

  /***************************************************************************/
  /* Optional parameters.                                                    */
  /***************************************************************************/
  evel_init_option_string(&header->event_type);
  evel_init_option_string(&header->nfcnaming_code);
  evel_init_option_string(&header->nfnaming_code);
  evel_force_option_string(&header->reporting_entity_id, openstack_vm_uuid());
  evel_force_option_string(&header->source_id, openstack_vm_uuid());
  evel_init_option_intheader(&header->internal_field);

  EVEL_EXIT();
}

/**************************************************************************//**
 * Set the Event Type property of the event header.
 *
 * @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 header        Pointer to the ::EVENT_HEADER.
 * @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_header_type_set(EVENT_HEADER * const header,
                          const char * const type)
{
  EVEL_ENTER();

  /***************************************************************************/
  /* Check preconditions.                                                    */
  /***************************************************************************/
  assert(header != NULL);
  assert(type != NULL);

  evel_set_option_string(&header->event_type, type, "Event Type");

  EVEL_EXIT();
}

/**************************************************************************//**
 * Set the Start Epoch property of the event header.
 *
 * @note The Start Epoch defaults to the time of event creation.
 *
 * @param header        Pointer to the ::EVENT_HEADER.
 * @param start_epoch_microsec
 *                      The start epoch to set, in microseconds.
 *****************************************************************************/
void evel_start_epoch_set(EVENT_HEADER * const header,
                          const unsigned long long start_epoch_microsec)
{
  EVEL_ENTER();

  /***************************************************************************/
  /* Check preconditions and assign the new value.                           */
  /***************************************************************************/
  assert(header != NULL);
  header->start_epoch_microsec = start_epoch_microsec;

  EVEL_EXIT();
}

/**************************************************************************//**
 * Set the Last Epoch property of the event header.
 *
 * @note The Last Epoch defaults to the time of event creation.
 *
 * @param header        Pointer to the ::EVENT_HEADER.
 * @param last_epoch_microsec
 *                      The last epoch to set, in microseconds.
 *****************************************************************************/
void evel_last_epoch_set(EVENT_HEADER * const header,
                         const unsigned long long last_epoch_microsec)
{
  EVEL_ENTER();

  /***************************************************************************/
  /* Check preconditions and assign the new value.                           */
  /***************************************************************************/
  assert(header != NULL);
  header->last_epoch_microsec = last_epoch_microsec;

  EVEL_EXIT();
}

/**************************************************************************//**
 * Set the NFC Naming code property of the event header.
 *
 * @param header        Pointer to the ::EVENT_HEADER.
 * @param nfcnamingcode String
 *****************************************************************************/
void evel_nfcnamingcode_set(EVENT_HEADER * const header,
                         const char * const nfcnam)
{
  EVEL_ENTER();

  /***************************************************************************/
  /* Check preconditions and assign the new value.                           */
  /***************************************************************************/
  assert(header != NULL);
  assert(nfcnam != NULL);
  evel_set_option_string(&header->nfcnaming_code, nfcnam, "NFC Naming Code");

  EVEL_EXIT();
}

/**************************************************************************//**
 * Set the NF Naming code property of the event header.
 *
 * @param header        Pointer to the ::EVENT_HEADER.
 * @param nfnamingcode String
 *****************************************************************************/
void evel_nfnamingcode_set(EVENT_HEADER * const header,
                         const char * const nfnam)
{
  EVEL_ENTER();

  /***************************************************************************/
  /* Check preconditions and assign the new value.                           */
  /***************************************************************************/
  assert(header != NULL);
  assert(nfnam != NULL);
  evel_set_option_string(&header->nfnaming_code, nfnam, "NF Naming Code");

  EVEL_EXIT();
}


/**************************************************************************//**
 * Set the Reporting Entity Name property of the event header.
 *
 * @note The Reporting Entity Name defaults to the OpenStack VM Name.
 *
 * @param header        Pointer to the ::EVENT_HEADER.
 * @param entity_name   The entity name to set.
 *****************************************************************************/
void evel_reporting_entity_name_set(EVENT_HEADER * const header,
                                    const char * const entity_name)
{
  EVEL_ENTER();

  /***************************************************************************/
  /* Check preconditions and assign the new value.                           */
  /***************************************************************************/
  assert(header != NULL);
  assert(entity_name != NULL);
  assert(header->reporting_entity_name != NULL);

  /***************************************************************************/
  /* Free the previously allocated memory and replace it with a copy of the  */
  /* provided one.                                                           */
  /***************************************************************************/
  free(header->reporting_entity_name);
  header->reporting_entity_name = strdup(entity_name);

  EVEL_EXIT();
}

/**************************************************************************//**
 * Set the Reporting Entity Id property of the event header.
 *
 * @note The Reporting Entity Id defaults to the OpenStack VM UUID.
 *
 * @param header        Pointer to the ::EVENT_HEADER.
 * @param entity_id     The entity id to set.
 *****************************************************************************/
void evel_reporting_entity_id_set(EVENT_HEADER * const header,
                                  const char * const entity_id)
{
  EVEL_ENTER();

  /***************************************************************************/
  /* Check preconditions and assign the new value.                           */
  /***************************************************************************/
  assert(header != NULL);
  assert(entity_id != NULL);

  /***************************************************************************/
  /* Free the previously allocated memory and replace it with a copy of the  */
  /* provided one.  Note that evel_force_option_string strdups entity_id.    */
  /***************************************************************************/
  evel_free_option_string(&header->reporting_entity_id);
  evel_force_option_string(&header->reporting_entity_id, entity_id);

  EVEL_EXIT();
}

/**************************************************************************//**
 * Encode the event as a JSON event object according to AT&T's schema.
 *
 * @param jbuf          Pointer to the ::EVEL_JSON_BUFFER to encode into.
 * @param event         Pointer to the ::EVENT_HEADER to encode.
 *****************************************************************************/
void evel_json_encode_header(EVEL_JSON_BUFFER * jbuf,
                             EVENT_HEADER * event)
{
  char * domain;
  char * priority;

  EVEL_ENTER();

  /***************************************************************************/
  /* Check preconditions.                                                    */
  /***************************************************************************/
  assert(jbuf != NULL);
  assert(jbuf->json != NULL);
  assert(jbuf->max_size > 0);
  assert(event != NULL);

  domain = evel_event_domain(event->event_domain);
  priority = evel_event_priority(event->priority);
  evel_json_open_named_object(jbuf, "commonEventHeader");

  /***************************************************************************/
  /* Mandatory fields.                                                       */
  /***************************************************************************/
  evel_enc_kv_string(jbuf, "domain", domain);
  evel_enc_kv_string(jbuf, "eventId", event->event_id);
  evel_enc_kv_string(jbuf, "eventName", event->event_name);
  evel_enc_kv_ull(jbuf, "lastEpochMicrosec", event->last_epoch_microsec);
  evel_enc_kv_string(jbuf, "priority", priority);
  evel_enc_kv_string(
    jbuf, "reportingEntityName", event->reporting_entity_name);
  evel_enc_kv_int(jbuf, "sequence", event->sequence);
  evel_enc_kv_string(jbuf, "sourceName", event->source_name);
  evel_enc_kv_ull(jbuf, "startEpochMicrosec", event->start_epoch_microsec);
  evel_enc_version(
    jbuf, "version", event->major_version, event->minor_version);

  /***************************************************************************/
  /* Optional fields.                                                        */
  /***************************************************************************/
  evel_enc_kv_opt_string(jbuf, "eventType", &event->event_type);
  evel_enc_kv_opt_string(
    jbuf, "reportingEntityId", &event->reporting_entity_id);
  evel_enc_kv_opt_string(jbuf, "sourceId", &event->source_id);
  evel_enc_kv_opt_string(jbuf, "nfcNamingCode", &event->nfcnaming_code);
  evel_enc_kv_opt_string(jbuf, "nfNamingCode", &event->nfnaming_code);

  evel_json_close_object(jbuf);

  EVEL_EXIT();
}

/**************************************************************************//**
 * Free an event header.
 *
 * Free off the event header supplied.  Will free all the contained allocated
 * memory.
 *
 * @note It does not free the header itself, since that may be part of a
 * larger structure.
 *****************************************************************************/
void evel_free_header(EVENT_HEADER * const event)
{
  EVEL_ENTER();

  /***************************************************************************/
  /* Check preconditions.  As an internal API we don't allow freeing NULL    */
  /* events as we do on the public API.                                      */
  /***************************************************************************/
  assert(event != NULL);

  /***************************************************************************/
  /* Free all internal strings.                                              */
  /***************************************************************************/
  free(event->event_id);
  evel_free_option_string(&event->event_type);
  free(event->event_name);
  evel_free_option_string(&event->reporting_entity_id);
  free(event->reporting_entity_name);
  evel_free_option_string(&event->source_id);
  evel_free_option_string(&event->nfcnaming_code);
  evel_free_option_string(&event->nfnaming_code);
  evel_free_option_intheader(&event->internal_field);
  free(event->source_name);

  EVEL_EXIT();
}

/**************************************************************************//**
 * Encode the event as a JSON event object according to AT&T's schema.
 *
 * @param json      Pointer to where to store the JSON encoded data.
 * @param max_size  Size of storage available in json_body.
 * @param event     Pointer to the ::EVENT_HEADER to encode.
 * @returns Number of bytes actually written.
 *****************************************************************************/
int evel_json_encode_event(char * json,
                           int max_size,
                           EVENT_HEADER * event)
{
  EVEL_JSON_BUFFER json_buffer;
  EVEL_JSON_BUFFER * jbuf = &json_buffer;
  EVEL_THROTTLE_SPEC * throttle_spec;

  EVEL_ENTER();

  /***************************************************************************/
  /* Get the latest throttle specification for the domain.                   */
  /***************************************************************************/
  throttle_spec = evel_get_throttle_spec(event->event_domain);

  /***************************************************************************/
  /* Initialize the JSON_BUFFER and open the top-level objects.              */
  /***************************************************************************/
  evel_json_buffer_init(jbuf, json, max_size, throttle_spec);
  evel_json_open_object(jbuf);
  evel_json_open_named_object(jbuf, "event");

  switch (event->event_domain)
  {
    case EVEL_DOMAIN_HEARTBEAT:
      evel_json_encode_header(jbuf, event);
      break;

    case EVEL_DOMAIN_FAULT:
      evel_json_encode_fault(jbuf, (EVENT_FAULT *)event);
      break;

    case EVEL_DOMAIN_MEASUREMENT:
      evel_json_encode_measurement(jbuf, (EVENT_MEASUREMENT *)event);
      break;

    case EVEL_DOMAIN_MOBILE_FLOW:
      evel_json_encode_mobile_flow(jbuf, (EVENT_MOBILE_FLOW *)event);
      break;

    case EVEL_DOMAIN_REPORT:
      evel_json_encode_report(jbuf, (EVENT_REPORT *)event);
      break;

    case EVEL_DOMAIN_HEARTBEAT_FIELD:
      evel_json_encode_hrtbt_field(jbuf, (EVENT_HEARTBEAT_FIELD *)event);
      break;

    case EVEL_DOMAIN_SIPSIGNALING:
      evel_json_encode_signaling(jbuf, (EVENT_SIGNALING *)event);
      break;

    case EVEL_DOMAIN_STATE_CHANGE:
      evel_json_encode_state_change(jbuf, (EVENT_STATE_CHANGE *)event);
      break;

    case EVEL_DOMAIN_SYSLOG:
      evel_json_encode_syslog(jbuf, (EVENT_SYSLOG *)event);
      break;

    case EVEL_DOMAIN_OTHER:
      evel_json_encode_other(jbuf, (EVENT_OTHER *)event);
      break;

    case EVEL_DOMAIN_VOICE_QUALITY:
      evel_json_encode_other(jbuf, (EVENT_VOICE_QUALITY *)event);
      break;

    case EVEL_DOMAIN_INTERNAL:
    default:
      EVEL_ERROR("Unexpected domain %d", event->event_domain);
      assert(0);
  }

  evel_json_close_object(jbuf);
  evel_json_close_object(jbuf);

  /***************************************************************************/
  /* Sanity check.                                                           */
  /***************************************************************************/
  assert(jbuf->depth == 0);

  EVEL_EXIT();

  return jbuf->offset;
}


/**************************************************************************//**
 * Initialize an event instance id.
 *
 * @param vfield        Pointer to the event vnfname field being initialized.
 * @param vendor_id     The vendor id to encode in the event instance id.
 * @param event_id      The event id to encode in the event instance id.
 *****************************************************************************/
void evel_init_vendor_field(VENDOR_VNFNAME_FIELD * const vfield,
                                 const char * const vendor_name)
{
  EVEL_ENTER();

  /***************************************************************************/
  /* Check preconditions.                                                    */
  /***************************************************************************/
  assert(vfield != NULL);
  assert(vendor_name != NULL);

  /***************************************************************************/
  /* Store the mandatory parts.                                              */
  /***************************************************************************/
  vfield->vendorname = strdup(vendor_name);
  evel_init_option_string(&vfield->vfmodule);
  evel_init_option_string(&vfield->vnfname);

  /***************************************************************************/
  /* Initialize the optional parts.                                          */
  /***************************************************************************/

  EVEL_EXIT();
}

/**************************************************************************//**
 * Set the Vendor module property of the Vendor.
 *
 * @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 vfield        Pointer to the Vendor field.
 * @param module_name   The module name to be set. ASCIIZ string. The caller
 *                      does not need to preserve the value once the function
 *                      returns.
 *****************************************************************************/
void evel_vendor_field_module_set(VENDOR_VNFNAME_FIELD * const vfield,
                                    const char * const module_name)
{
  EVEL_ENTER();

  /***************************************************************************/
  /* Check preconditions.                                                    */
  /***************************************************************************/
  assert(vfield != NULL);
  assert(module_name != NULL);

  evel_set_option_string(&vfield->vfmodule, module_name, "Module name set");

  EVEL_EXIT();
}

/**************************************************************************//**
 * Set the Vendor module property of the Vendor.
 *
 * @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 vfield        Pointer to the Vendor field.
 * @param module_name   The module name to be set. ASCIIZ string. The caller
 *                      does not need to preserve the value once the function
 *                      returns.
 *****************************************************************************/
void evel_vendor_field_vnfname_set(VENDOR_VNFNAME_FIELD * const vfield,
                                    const char * const vnfname)
{
  EVEL_ENTER();

  /***************************************************************************/
  /* Check preconditions.                                                    */
  /***************************************************************************/
  assert(vfield != NULL);
  assert(vnfname != NULL);

  evel_set_option_string(&vfield->vnfname, vnfname, "Virtual Network Function name set");

  EVEL_EXIT();
}

/**************************************************************************//**
 * Free an event instance id.
 *
 * @param vfield   Pointer to the event vnfname_field being freed.
 *****************************************************************************/
void evel_free_event_vendor_field(VENDOR_VNFNAME_FIELD * const vfield)
{
  EVEL_ENTER();

  /***************************************************************************/
  /* Check preconditions.                                                    */
  /***************************************************************************/
  assert(vfield->vendorname != NULL);

  /***************************************************************************/
  /* Free everything.                                                        */
  /***************************************************************************/
  evel_free_option_string(&vfield->vfmodule);
  evel_free_option_string(&vfield->vnfname);
  free(vfield->vendorname);

  EVEL_EXIT();
}

/**************************************************************************//**
 * Encode the instance id as a JSON object according to AT&T's schema.
 *
 * @param jbuf          Pointer to the ::EVEL_JSON_BUFFER to encode into.
 * @param vfield        Pointer to the ::VENDOR_VNFNAME_FIELD to encode.
 *****************************************************************************/
void evel_json_encode_vendor_field(EVEL_JSON_BUFFER * jbuf,
                                  VENDOR_VNFNAME_FIELD * vfield)
{
  EVEL_ENTER();

  /***************************************************************************/
  /* Check preconditions.                                                    */
  /***************************************************************************/
  assert(jbuf != NULL);
  assert(jbuf->json != NULL);
  assert(jbuf->max_size > 0);
  assert(vfield != NULL);
  assert(vfield->vendorname != NULL);

  evel_json_open_named_object(jbuf, "vendorVnfNamedFields");

  /***************************************************************************/
  /* Mandatory fields.                                                       */
  /***************************************************************************/
  evel_enc_kv_string(jbuf, "vendorName", vfield->vendorname);
  evel_enc_kv_opt_string(jbuf, "vfModuleName", &vfield->vfmodule);
  evel_enc_kv_opt_string(jbuf, "vnfName", &vfield->vnfname);

  /***************************************************************************/
  /* Optional fields.                                                        */
  /***************************************************************************/

  evel_json_close_object(jbuf);

  EVEL_EXIT();
}