summaryrefslogtreecommitdiff
path: root/common/elapi/elapi_internal.c
blob: fbbc0151bad55718d0cec61564acd01003f7e127 (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
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
/*
    ELAPI

    Implementation of the ELAPI logging interface.

    Copyright (C) Dmitri Pal <dpal@redhat.com> 2009

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#define _GNU_SOURCE
#include <errno.h>      /* for errors */
#include <stdio.h>      /* for printf() - temporarily */
#include <stdlib.h>     /* for malloc() */

#include "elapi_priv.h"
#include "elapi_event.h"
#include "elapi_sink.h"
#include "trace.h"
#include "config.h"
#include "ini_config.h"

#include "collection_tools.h" /*temporarily */

/* Buffer size for time string */
#define MAX_TIMESTR         200

/* I was told during review that I have to hard code the name.
 * So it is hardcoded now.
 */
#define ELAPI_DEFAULT_ERROR_FILE "elapiconf.err"

/* Handler for logging through the targets */
int elapi_tgt_cb(const char *target,
                 int target_len,
                 int type,
                 void *data,
                 int length,
                 void *passed_data,
                 int *stop)
{
    int error = EOK;
    struct elapi_tgt_data *target_data;
    struct elapi_tgt_ctx *context;

    TRACE_FLOW_STRING("elapi_tgt_cb", "Entry.");

    /* Skip header */
    if (type == COL_TYPE_COLLECTION) {
        TRACE_FLOW_STRING("elapi_tgt_cb - skip header", "Exit.");
        return EOK;
    }

    target_data = (struct elapi_tgt_data *)(passed_data);
    context = *((struct elapi_tgt_ctx **)(data));

    /* Check if we need to log this event into this target */
    TRACE_INFO_NUMBER("EVENT IS LOGGED INTO:", target_data->target_mask);
    TRACE_INFO_NUMBER("TARGET VALUE IS:", context->target_value);

    if ((target_data->target_mask & context->target_value) == 0) {
        TRACE_INFO_STRING("Current event will NOT be logged into the target:", target);
        return EOK;
    }

    TRACE_INFO_STRING("Current event will be logged into the target:", target);

    /* Log event */
    error = elapi_tgt_submit(target_data->handle, context, target_data->event);
    if (error) {
        TRACE_ERROR_NUMBER("Failed to submit event to target", error);
        return error;
    }

    TRACE_FLOW_STRING("elapi_tgt_cb", "Exit.");
    return EOK;
}

/* Internal target cleanup function */
int elapi_tgt_free_cb(const char *target,
                      int target_len,
                      int type,
                      void *data,
                      int length,
                      void *passed_data,
                      int *stop)
{
    TRACE_FLOW_STRING("elapi_tgt_free_cb", "Entry.");

    /* Skip header */
    if (type == COL_TYPE_COLLECTION) {
        TRACE_FLOW_STRING("elapi_tgt_free_cb - skip header", "Exit.");
        return EOK;
    }

    elapi_tgt_destroy(*((struct elapi_tgt_ctx **)(data)));

    TRACE_FLOW_STRING("elapi_tgt_free_cb", "Exit.");
    return EOK;
}

/* Function to add a sink to the collection */
/* This function belongs to this module.
 * It adds sink into the collection
 * of sinks inside dispatcher and puts
 * reference into the target's reference list.
 */
/* FIXME - other arguments might be added later */
int elapi_sink_add(struct collection_item **sink_ref,
                   const char *sink,
                   struct elapi_dispatcher *handle)
{
    int error = EOK;
    struct elapi_sink_ctx *sink_context = NULL;

    TRACE_FLOW_STRING("elapi_sink_add", "Entry");

    TRACE_INFO_STRING("Evaluating sink:", sink);
    TRACE_INFO_NUMBER("Sink reference before call:", *sink_ref);

    /* Get the sink from the list */
    error = col_get_item(handle->sink_list,
                         sink,
                         COL_TYPE_ANY,
                         COL_TRAVERSE_DEFAULT,
                         sink_ref);

    TRACE_INFO_NUMBER("Sink evaluation returned", error);
    TRACE_INFO_NUMBER("Sink reference after call:", *sink_ref);

    if (error) {
        TRACE_ERROR_NUMBER("Search returned error", error);
        return error;
    }

    if (!(*sink_ref)) {
        TRACE_FLOW_STRING("No such sink yet, adding new sink:", sink);

        /* Create a sink object */
        error = elapi_sink_create(&sink_context, sink, handle->ini_config, handle->appname);
        if (error != 0) {
            TRACE_ERROR_NUMBER("Failed to add sink data as property", error);
            /* If create failed there is nothing to destroy */
            return error;
        }

        /* If there was an internal error but sink is optional
         * no error is returned but context is NULL.
         * We need to check for this situation.
         */
        if (sink_context) {
            TRACE_FLOW_STRING("Loaded sink:", sink);
            /* We got a valid sink so add it to the collection */
            error = col_add_binary_property_with_ref(handle->sink_list,
                                                     NULL,
                                                     sink,
                                                     (void *)(&sink_context),
                                                     sizeof(struct elapi_sink_ctx *),
                                                     sink_ref);
            if (error != 0) {
                TRACE_ERROR_NUMBER("Failed to add sink data as property", error);
                elapi_sink_destroy(sink_context);
                return error;
            }
        }
        else {
            *sink_ref = NULL;
            TRACE_FLOW_STRING("Setting sink reference to NULL", "");
        }
    }

    TRACE_FLOW_NUMBER("elapi_sink_add returning", error);
    return error;
}

/* Destroy target object */
void elapi_tgt_destroy(struct elapi_tgt_ctx *context)
{
    TRACE_FLOW_STRING("elapi_tgt_destroy", "Entry.");

    TRACE_INFO_NUMBER("Target address in cleanup:", context);

    if (context) {
        TRACE_INFO_STRING("Deleting the list of references to sinks", "");
        col_destroy_collection(context->sink_ref_list);
        /* FIXME - add other cleanup for other things that will be a part
         * of the target context.
         */
        free(context);
    }

    TRACE_FLOW_STRING("elapi_tgt_destroy", "Exit.");

}

/* Allocate target context and load sinks to it */
int elapi_tgt_create(struct elapi_tgt_ctx **context,
                     const char *target,
                     struct elapi_dispatcher *handle)
{
    int error = EOK;
    struct collection_item *sink_cfg_item = NULL;
    struct collection_item *value_cfg_item = NULL;
    struct elapi_tgt_ctx *target_context;
    char **sinks;
    char **current_sink;
    struct collection_item *sink_ref;
    unsigned count;

    TRACE_FLOW_STRING("elapi_tgt_create", "Entry.");

    /* Get list of sinks for this target from config */
    error = get_config_item(target,
                            ELAPI_SINKS,
                            handle->ini_config,
                            &sink_cfg_item);
    if (error) {
        TRACE_ERROR_NUMBER("Attempt to read configuration returned error", error);
        return error;
    }

    /* Do we have sinks? */
    if (sink_cfg_item == NULL) {
        /* There is no list of targets this is bad configuration - return error */
        TRACE_ERROR_STRING("Required key is missing in the configuration.", "Fatal Error!");
        return ENOENT;
    }

    /* Allocate context */
    target_context = (struct elapi_tgt_ctx *)calloc(1, sizeof(struct elapi_tgt_ctx));
    if (target_context == NULL) {
        TRACE_ERROR_NUMBER("Memory allocation failed. Error", ENOMEM);
        return ENOMEM;
    }

    /* Assign target's value */
    error = get_config_item(target,
                            ELAPI_TARGET_VALUE,
                            handle->ini_config,
                            &value_cfg_item);
    if (error) {
        TRACE_ERROR_NUMBER("Attempt to read configuration returned error", error);
        elapi_tgt_destroy(target_context);
        return error;
    }

    /* Do we have value? */
    if (value_cfg_item == NULL) {
        TRACE_INFO_STRING("Value for target is not defined.", "Assume ANY.");
        target_context->target_value = ELAPI_TARGET_ALL;
    }
    else {
        target_context->target_value = (uint32_t)get_unsigned_config_value(value_cfg_item,
                                                                           1,
                                                                           ELAPI_TARGET_ALL,
                                                                           &error);
        /* NOTE: I will check and fail here on error rather than do a best effort
         * for now. We can switch to less rigorous checking when the INI
         * validation library/utility becomes available.
         */
        if (error) {
            TRACE_ERROR_NUMBER("Failed to convert value form INI file", error);
            elapi_tgt_destroy(target_context);
            return error;
        }
    }

    TRACE_INFO_NUMBER("Value for target is:", target_context->target_value);


    /* Allocate collection to store sink references for this target */
    error = col_create_collection(&(target_context->sink_ref_list),
                                  ELAPI_SINK_REFS,
                                  COL_CLASS_ELAPI_SINK_REF);
    if (error != 0) {
        TRACE_ERROR_NUMBER("Failed to create sink collection. Error", error);
        elapi_tgt_destroy(target_context);
        return error;
    }

    /* Get list of sinks from config. Make sure we free it later */
    sinks = get_string_config_array(sink_cfg_item, NULL, NULL, NULL);

    /* For each sink in the list create sink context object and load sink */
    current_sink = sinks;
    while (*current_sink != NULL) {

        TRACE_INFO_STRING("Current sink", *current_sink);

        /* Load sink if it is not loaded yet */
        sink_ref = NULL;
        error = elapi_sink_add(&sink_ref,
                               *current_sink,
                               handle);
        if (error) {
            /* NOTE - we might decide to lax some of the checks
             * like this later and be satisfied with at least one
             * sink in the list. Subject for discussion...
             */
            TRACE_ERROR_NUMBER("Failed to add sink", error);
            elapi_tgt_destroy(target_context);
            free_string_config_array(sinks);
            return error;
        }

        /* It might be that is was an error wit the optional sink so
         * we need to check if the reference is not NULL;
         */
        if (sink_ref) {
            /* Add reference to it into the target object */
            error = col_add_binary_property(target_context->sink_ref_list, NULL,
                                            *current_sink, (void *)(&sink_ref),
                                            sizeof(struct collection_item *));
            if (error != 0) {
                TRACE_ERROR_NUMBER("Failed to add sink reference", error);
                elapi_tgt_destroy(target_context);
                free_string_config_array(sinks);
                return error;
            }
        }
        else {
            TRACE_INFO_STRING("Sink reference is NULL.", "Skipping the sink");
        }
        current_sink++;
    }

    free_string_config_array(sinks);

    /* Get count of the references in the list */
    error = col_get_collection_count(target_context->sink_ref_list, &count);
    if (error) {
        TRACE_ERROR_NUMBER("Failed to get count", error);
        elapi_tgt_destroy(target_context);
        return error;
    }

    /* Check count */
    if (count <= 1) {
        /* Nothing but header? - Bad! */
        TRACE_ERROR_NUMBER("No sinks loaded for target!", "This is a fatal error!");
        elapi_tgt_destroy(target_context);
        return ENOENT;
    }

    *context = target_context;

    TRACE_FLOW_STRING("elapi_tgt_create", "Exit.");
    return EOK;
}


/* Function to create a list of targets */
int elapi_tgt_mklist(struct elapi_dispatcher *handle)
{
    int error = EOK;
    char **current_target;
    struct elapi_tgt_ctx *context;


    TRACE_FLOW_STRING("elapi_tgt_mklist", "Entry");

    /* Allocate collection to store target */
    error = col_create_collection(&(handle->target_list),
                                  ELAPI_TARGETS,
                                  COL_CLASS_ELAPI_TARGET);
    if (error != 0) {
        TRACE_ERROR_NUMBER("Failed to create target collection. Error", error);
        /* No cleanup here.
         * The calling function will call a cleanup
         * of the dispatcher as a whole.*/
        return error;
    }

    /* Allocate collection to store sinks */
    error = col_create_collection(&(handle->sink_list),
                                  ELAPI_SINKS,
                                  COL_CLASS_ELAPI_SINK);
    if (error != 0) {
        TRACE_ERROR_NUMBER("Failed to create sink collection. Error", error);
        /* No cleanup here.
         * The calling function will call a cleanup
         * of the dispatcher as a whole.*/
        return error;
    }

    current_target = handle->targets;
    handle->target_counter = 0;

    /* Add targets as properties to the target collection */
    while (*current_target != NULL) {

        TRACE_INFO_STRING("Current target", *current_target);

        /* Allocate target context and load sinks to it */
        context = NULL;
        error = elapi_tgt_create(&context,
                                 *current_target,
                                 handle);
        if (error) {
            TRACE_ERROR_NUMBER("Failed to create target", error);
            return error;
        }

        TRACE_INFO_NUMBER("Target address:", context);

        /* Add created target to the list of targets */
        error = col_add_binary_property(handle->target_list, NULL,
                                        *current_target, (void *)(&context),
                                        sizeof(struct elapi_tgt_ctx *));
        if (error != 0) {
            TRACE_ERROR_NUMBER("Failed to add sink data as property", error);
            /* Need to clean allocated context here if we failed to add it */
            elapi_tgt_destroy(context);
            return error;
        }

        handle->target_counter++;
        current_target++;
    }

    /* Check if we have any targets available */
    if (handle->target_counter == 0) {
        TRACE_ERROR_STRING("No targets", "");
        return ENOENT;
    }

    TRACE_FLOW_STRING("elapi_tgt_mklist", "Returning success");
    return EOK;
}

/* Submit event into the target */
/* FIXME: do we need the whole dispatcher here?
 * probably not.
 * Need to sort out what parts of it we actually
 * need and pass them explicitely.
 * The point is that the target should not
 * know or care about the dispatcher internals
 * passing it here is a violation of the
 * several desing patterns so it should be
 * eventually fixed.
 */
int elapi_tgt_submit(struct elapi_dispatcher *handle,
                     struct elapi_tgt_ctx *context,
                     struct collection_item *event)
{
    int error = EOK;
    struct collection_iterator *iterator;
    struct collection_item *sink_item;
    struct elapi_sink_ctx *ctx;

    TRACE_FLOW_STRING("elapi_tgt_submit", "Entry");

    /* FIXME: General logic of the function
     * should be the following:
     * Get the list of the sinks
     * For each sink
     *    Get its status
     *    Check if the sink is active
     *    If it is active log into it
     *        In error fail over to the next one
     *        else done
     *    else (not active) is it revivable?
     *        If so is it time to revive?
     *            If so mark as active and log into it
     *                If error fail over
     *                else done
     *            else fail over
     *        else fail over
     *    else fail over
     * End for each sink
     *
     * This logic will be implemented
     * in the later patches
     * for now we will try
     * all the sinks without checking status.
     */

    error = col_bind_iterator(&iterator, context->sink_ref_list,
                              COL_TRAVERSE_DEFAULT);
    if (error) {
        TRACE_ERROR_NUMBER("Failed to bind iterator.", error);
        return error;
    }

    while(1) {
        /* Loop through the sink references */
        error = col_iterate_collection(iterator, &sink_item);
        if (error) {
            TRACE_ERROR_NUMBER("Error iterating event:", error);
            col_unbind_iterator(iterator);
            return error;
        }

        /* Are we done ? */
        if (sink_item == NULL) break;

        /* Skip headers */
        if (col_get_item_type(sink_item) == COL_TYPE_COLLECTION) continue;


        /* Dereference the sink item to get context */
        sink_item = *((struct collection_item **)(col_get_item_data(sink_item)));
        ctx = *((struct elapi_sink_ctx **)(col_get_item_data(sink_item)));

        /* FIXME: Check the sink status */

        /* FIXME other parameters might be required... */
        error = elapi_sink_submit(ctx, event);
        if (error) {
            TRACE_ERROR_NUMBER("Error submitting event:", error);
            col_unbind_iterator(iterator);
            return error;
        }

    }

    col_unbind_iterator(iterator);

    TRACE_FLOW_STRING("elapi_tgt_submit", "Exit");
    return EOK;

}


/* If we failed to read configuration record this in the local file */
void elapi_dump_ini_err(struct collection_item *error_list)
{
    FILE *efile;
    char timestr[MAX_TIMESTR];
    time_t time_in_sec;
    struct tm *time_as_struct;
    struct tm time_data;

    TRACE_FLOW_STRING("elapi_dump_ini_err", "Entry point");

    efile = fopen(ELAPI_DEFAULT_ERROR_FILE, "a");
    if (efile == NULL) {
        TRACE_ERROR_STRING("No output available.", "Returning.");
        return;
    }

    time_in_sec = time(NULL);
    time_as_struct = localtime_r(&time_in_sec, &time_data);

    fprintf(efile, "\n\n%*s\n\n", 80, "=");

    if ((time_as_struct != NULL) &&
        (strftime(timestr, sizeof(timestr), E_TIMESTAMP_FORMAT, time_as_struct) == 0)) {
        fprintf(efile, "%s\n", timestr);
    }
    else {
        TRACE_FLOW_STRING("elapi_internal_dump_errors_to_file", "Was not able to process time.");
    }

    fprintf(efile, "\n");
    print_file_parsing_errors(efile, error_list);

    fclose(efile);
    TRACE_FLOW_STRING("elapi_dump_ini_err", "Exit");
}

/****************************************************************************/
/* Functions below are added for debugging purposes                         */
/****************************************************************************/
#ifdef ELAPI_VERBOSE

void elapi_print_sink_ctx(struct elapi_sink_ctx *sink_context)
{
    /* This will not print well on 64 bit but it is just debugging
     * so it is OK to have it.
     */
    printf("Printing sink context using address %p\n", sink_context);

    printf("Mode: %s\n", sink_context->async_mode ? "true" : "false");
    if (sink_context->in_queue) col_print_collection(sink_context->in_queue);
    else printf("Queue is not initialized.\n");

    if (sink_context->pending) col_print_collection(sink_context->pending);
    else printf("Pending list is not initialized.\n");

    if (sink_context->sink_cfg.provider) printf("Provider: %s\n",
                                                sink_context->sink_cfg.provider);
    else printf("Provider is not defined.\n");

    printf("Is provider required? %s\n", ((sink_context->sink_cfg.required > 0) ? "Yes" : "No"));
    printf("On error: %s\n", ((sink_context->sink_cfg.onerror == 0) ? "retry" : "fail"));
    printf("Timout: %d\n", sink_context->sink_cfg.timeout);
    printf("Sync configuration: %s\n", sink_context->sink_cfg.synch ? "true" : "false");

    if (sink_context->sink_cfg.priv_ctx) printf("Private context allocated.\n");
    else printf("Private context is NULL.\n");

    if (sink_context->sink_cfg.libhandle) printf("Lib handle is allocated.\n");
    else printf("Lib handle is NULL.\n");

    if (sink_context->sink_cfg.ability) printf("Capability function is present\n");
    else printf("NO capability function.\n");

    if (sink_context->sink_cfg.cpb_cb.init_cb)  printf("Init callback is OK.\n");
    else printf("Init callback is missing.\n");

    if (sink_context->sink_cfg.cpb_cb.submit_cb)  printf("Submit callback is OK.\n");
    else printf("Submit callback is missing.\n");

    if (sink_context->sink_cfg.cpb_cb.close_cb)  printf("Close callback is OK.\n");
    else printf("Close callback is missing.\n");


}

/* Handler for printing target internals */
static int elapi_sink_ref_dbg_cb(const char *sink,
                                 int sink_len,
                                 int type,
                                 void *data,
                                 int length,
                                 void *passed_data,
                                 int *stop)
{
    struct collection_item *sink_item;
    struct elapi_sink_ctx *sink_context;

    /* Skip header */
    if (type == COL_TYPE_COLLECTION) {
        return EOK;
    }

    sink_item = *((struct collection_item **)(data));

    printf("\nReferenced sink name is: %s\n", col_get_item_property(sink_item, NULL));

    sink_context = *((struct elapi_sink_ctx **)(col_get_item_data(sink_item)));

    elapi_print_sink_ctx(sink_context);


    return EOK;
}

/* Handler for printing sink internals */
static int elapi_sink_dbg_cb(const char *sink,
                             int sink_len,
                             int type,
                             void *data,
                             int length,
                             void *passed_data,
                             int *stop)
{
    struct elapi_sink_ctx *sink_context;

    /* Skip header */
    if (type == COL_TYPE_COLLECTION) {
        return EOK;
    }

    sink_context = *((struct elapi_sink_ctx **)(data));

    printf("\nSink name is: %s\n", sink);

    elapi_print_sink_ctx(sink_context);

    return EOK;
}

/* Handler for printing target internals */
static int elapi_tgt_dbg_cb(const char *target,
                            int target_len,
                            int type,
                            void *data,
                            int length,
                            void *passed_data,
                            int *stop)
{
    struct elapi_tgt_ctx *context;

    /* Skip header */
    if (type == COL_TYPE_COLLECTION) {
        return EOK;
    }

    context = *((struct elapi_tgt_ctx **)(data));

    printf("\nTarget value for target \"%s\" is %d\n", target, context->target_value);
    printf("\nReferenced sinks:\n\n");

    (void)col_traverse_collection(context->sink_ref_list,
                                  COL_TRAVERSE_ONELEVEL,
                                  elapi_sink_ref_dbg_cb,
                                  NULL);

    return EOK;
}



/* Internal function to print dispatcher internals - useful for testing */
void elapi_print_dispatcher(struct elapi_dispatcher *handle)
{
    char **current_target;

    printf("\nPRINTING DISPATCHER INTERNALS\n\n");

    printf("Application name: %s\n", handle->appname != NULL ? handle->appname : "(null)");
    printf("List of target names:\n");

    current_target = handle->targets;
    while (*current_target != NULL) {
        printf("   %s\n",*current_target);
        current_target++;
    }

    printf("Target counter: %d\n", handle->target_counter);
    printf("\n\nTarget collection:\n\n");
    if (handle->target_list) col_debug_collection(handle->target_list, COL_TRAVERSE_DEFAULT);


    printf("\n\nSink collection:\n\n");
    if (handle->sink_list) col_debug_collection(handle->sink_list, COL_TRAVERSE_DEFAULT);
    printf("\n\nConfig collection:\n\n");
    if (handle->ini_config) col_debug_collection(handle->ini_config, COL_TRAVERSE_DEFAULT);
    printf("\nDefault template:\n\n");
    if (handle->default_tpl) col_debug_collection(handle->default_tpl, COL_TRAVERSE_DEFAULT);

    printf("\n\nDeep target inspection:\n\n");
    if (handle->target_list) {
        (void)col_traverse_collection(handle->target_list,
                                      COL_TRAVERSE_ONELEVEL,
                                      elapi_tgt_dbg_cb,
                                      NULL);
    }
    printf("\n\nDeep sink inspection:\n\n");
    if (handle->sink_list) {
        (void)col_traverse_collection(handle->sink_list,
                                      COL_TRAVERSE_ONELEVEL,
                                      elapi_sink_dbg_cb,
                                      NULL);
    }
    /* FIXME: Async data... */

    printf("DISPATCHER END\n\n");
    fflush(stdout);
}

#endif