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tcabdb.c
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tcabdb.c
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/**
* tcabdb.c -- Tokyo Cabinet database functions
* ______ ___
* / ____/___ / | _____________ __________
* / / __/ __ \/ /| |/ ___/ ___/ _ \/ ___/ ___/
* / /_/ / /_/ / ___ / /__/ /__/ __(__ |__ )
* \____/\____/_/ |_\___/\___/\___/____/____/
*
* The MIT License (MIT)
* Copyright (c) 2009-2016 Gerardo Orellana <hello @ goaccess.io>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <errno.h>
#include <tcutil.h>
#include <stdlib.h>
#include <stdbool.h>
#include <stdint.h>
#include <string.h>
#include "tcabdb.h"
#include "tcbtdb.h"
#ifdef HAVE_LIBGEOIP
#include "geolocation.h"
#endif
#include "error.h"
#include "sort.h"
#include "util.h"
#include "xmalloc.h"
/* Hash tables storage */
static GTCStorage *tc_storage;
/* tables for the whole app */
static TCADB *ht_agent_keys = NULL;
static TCADB *ht_agent_vals = NULL;
static TCADB *ht_general_stats = NULL;
static TCADB *ht_hostnames = NULL;
static TCADB *ht_unique_keys = NULL;
/* Instantiate a new store */
static GTCStorage *
new_tcstorage (uint32_t size)
{
GTCStorage *storage = xcalloc (size, sizeof (GTCStorage));
return storage;
}
/* Open a concrete database */
static int
tc_adb_open (TCADB * adb, const char *params)
{
/* attempt to open the database */
if (!tcadbopen (adb, params))
return 1;
return 0;
}
/* Close the database handle */
static int
tc_db_close (TCADB * adb, char *dbname)
{
if (adb == NULL)
return 1;
/* close the database */
if (!tcadbclose (adb))
FATAL ("Unable to close DB: %s", dbname);
/* delete the object */
tcadbdel (adb);
#ifdef TCB_BTREE
/* remove database file */
if (!conf.keep_db_files && !tcremovelink (dbname))
LOG_DEBUG (("Unable to remove DB: %s\n", dbname));
#endif
free (dbname);
return 0;
}
/* Setup a database given the file path and open it up */
static TCADB *
tc_adb_create (char *path)
{
char params[DB_PARAMS] = "";
TCADB *adb = tcadbnew ();
#ifdef TCB_MEMHASH
xstrncpy (params, path, DB_PARAMS);
#endif
#ifdef TCB_BTREE
tc_db_get_params (params, path);
#endif
if (tc_adb_open (adb, params)) {
free (path);
LOG_DEBUG (("params: %s", params));
FATAL ("Unable to open an abstract database: %s", params);
}
free (path);
return adb;
}
/* Get the file path for the given a database name */
static char *
get_dbname (const char *dbname, int module)
{
char *path = NULL;
#ifdef TCB_MEMHASH
(void) dbname;
(void) module;
path = alloc_string ("*");
#endif
#ifdef TCB_BTREE
char *db = NULL;
path = tc_db_set_path (dbname, module);
if (module >= 0) {
db = xmalloc (snprintf (NULL, 0, "%s", path) + 1);
sprintf (db, "%s", path);
free (path);
return db;
}
#endif
return path;
}
/* Initialize map & metric hashes */
static void
init_tables (GModule module)
{
GTCStorageMetric mtrc;
int n = 0, i;
/* *INDENT-OFF* */
GTCStorageMetric metrics[] = {
{MTRC_KEYMAP , DB_KEYMAP , NULL} ,
{MTRC_ROOTMAP , DB_ROOTMAP , NULL} ,
{MTRC_DATAMAP , DB_DATAMAP , NULL} ,
{MTRC_UNIQMAP , DB_UNIQMAP , NULL} ,
{MTRC_ROOT , DB_ROOT , NULL} ,
{MTRC_HITS , DB_HITS , NULL} ,
{MTRC_VISITORS , DB_VISITORS , NULL} ,
{MTRC_BW , DB_BW , NULL} ,
{MTRC_CUMTS , DB_CUMTS , NULL} ,
{MTRC_MAXTS , DB_MAXTS , NULL} ,
{MTRC_METHODS , DB_METHODS , NULL} ,
{MTRC_PROTOCOLS , DB_PROTOCOLS , NULL} ,
{MTRC_AGENTS , DB_AGENTS , NULL} ,
{MTRC_METADATA , DB_METADATA , NULL} ,
};
/* *INDENT-ON* */
n = ARRAY_SIZE (metrics);
for (i = 0; i < n; i++) {
mtrc = metrics[i];
#ifdef TCB_MEMHASH
mtrc.store = tc_adb_create (get_dbname (mtrc.dbname, module));
#endif
#ifdef TCB_BTREE
/* allow for duplicate keys */
if (mtrc.metric == MTRC_AGENTS)
mtrc.store = tc_bdb_create (DB_AGENTS, module);
else
mtrc.store = tc_adb_create (get_dbname (mtrc.dbname, module));
#endif
tc_storage[module].metrics[i] = mtrc;
}
}
/* Initialize hash tables */
void
init_storage (void)
{
GModule module;
size_t idx = 0;
/* Hashes used across the whole app (not per module) */
ht_agent_keys = tc_adb_create (get_dbname (DB_AGENT_KEYS, -1));
ht_agent_vals = tc_adb_create (get_dbname (DB_AGENT_VALS, -1));
ht_general_stats = tc_adb_create (get_dbname (DB_GEN_STATS, -1));
ht_hostnames = tc_adb_create (get_dbname (DB_HOSTNAMES, -1));
ht_unique_keys = tc_adb_create (get_dbname (DB_UNIQUE_KEYS, -1));
tc_storage = new_tcstorage (TOTAL_MODULES);
FOREACH_MODULE (idx, module_list) {
module = module_list[idx];
tc_storage[module].module = module;
init_tables (module);
}
}
/* Destroys the hash structure allocated metrics */
static void
free_metrics (GModule module)
{
int i;
GTCStorageMetric mtrc;
for (i = 0; i < GSMTRC_TOTAL; i++) {
mtrc = tc_storage[module].metrics[i];
#ifdef TCB_MEMHASH
tc_db_close (mtrc.store, get_dbname (mtrc.dbname, module));
#endif
#ifdef TCB_BTREE
if (mtrc.metric == MTRC_AGENTS)
tc_bdb_close (mtrc.store, get_dbname (mtrc.dbname, module));
else
tc_db_close (mtrc.store, get_dbname (mtrc.dbname, module));
#endif
}
}
/* Destroys the hash structure and its content */
void
free_storage (void)
{
size_t idx = 0;
if (!tc_storage)
return;
tc_db_close (ht_agent_keys, get_dbname (DB_AGENT_KEYS, -1));
tc_db_close (ht_agent_vals, get_dbname (DB_AGENT_VALS, -1));
tc_db_close (ht_general_stats, get_dbname (DB_GEN_STATS, -1));
tc_db_close (ht_hostnames, get_dbname (DB_HOSTNAMES, -1));
tc_db_close (ht_unique_keys, get_dbname (DB_UNIQUE_KEYS, -1));
FOREACH_MODULE (idx, module_list) {
free_metrics (module_list[idx]);
}
free (tc_storage);
}
static uint32_t
ht_get_size (TCADB * adb)
{
return tcadbrnum (adb);
}
/* Given a module and a metric, get the hash table
*
* On error, or if table is not found, NULL is returned.
* On success the hash structure pointer is returned. */
static void *
get_hash (GModule module, GSMetric metric)
{
void *hash = NULL;
int i;
GTCStorageMetric mtrc;
if (!tc_storage)
return NULL;
for (i = 0; i < GSMTRC_TOTAL; i++) {
mtrc = tc_storage[module].metrics[i];
if (mtrc.metric != metric)
continue;
hash = mtrc.store;
break;
}
return hash;
}
/* Insert a string key and the corresponding int value.
* Note: If the key exists, the value is not replaced.
*
* On error, or if key exists, -1 is returned.
* On success 0 is returned */
static int
ins_si32 (void *hash, const char *key, int value)
{
if (!hash)
return -1;
/* if key exists in the database, it is overwritten */
if (!tcadbput (hash, key, strlen (key), &value, sizeof (int)))
LOG_DEBUG (("Unable to tcadbput\n"));
return 0;
}
/* Insert an int key and the corresponding string value.
* Note: If the key exists, the value is not replaced.
*
* On error, or if key exists, -1 is returned.
* On success 0 is returned */
static int
ins_is32 (void *hash, int key, const char *value)
{
if (!hash)
return -1;
/* if key exists in the database, it is overwritten */
if (!tcadbput (hash, &key, sizeof (int), value, strlen (value)))
LOG_DEBUG (("Unable to tcadbput\n"));
return 0;
}
/* Insert a string key and the corresponding string value.
* Note: If the key exists, the value is not replaced.
*
* On error, or if key exists, -1 is returned.
* On success 0 is returned */
static int
ins_ss32 (void *hash, const char *key, const char *value)
{
if (!hash)
return -1;
/* if key exists in the database, it is overwritten */
if (!tcadbput2 (hash, key, value))
LOG_DEBUG (("Unable to tcadbput\n"));
return 0;
}
/* Insert an int key and an int value
* Note: If the key exists, its value is replaced by the given value.
*
* On error, -1 is returned.
* On success 0 is returned */
static int
ins_ii32 (void *hash, int key, int value)
{
if (!hash)
return -1;
/* if key exists in the database, it is overwritten */
if (!tcadbput (hash, &key, sizeof (int), &value, sizeof (int)))
LOG_DEBUG (("Unable to tcadbput\n"));
return 0;
}
/* Insert an int key and a uint64_t value
* Note: If the key exists, its value is replaced by the given value.
*
* On error, -1 is returned.
* On success 0 is returned */
static int
ins_iu64 (void *hash, int key, uint64_t value)
{
if (!hash)
return -1;
/* if key exists in the database, it is overwritten */
if (!tcadbput (hash, &key, sizeof (int), &value, sizeof (uint64_t)))
LOG_DEBUG (("Unable to tcadbput\n"));
return 0;
}
/* Increase an int value given an int key.
* Note: If the key exists, its value is increased by the given inc.
*
* On error, -1 is returned.
* On success 0 is returned */
static int
inc_ii32 (void *hash, int key, int inc)
{
if (!hash)
return -1;
/* if key exists in the database, it is incremented */
if (tcadbaddint (hash, &key, sizeof (int), inc) == INT_MIN)
LOG_DEBUG (("Unable to tcadbput\n"));
return 0;
}
/* Increase a uint64_t value given an int key.
* Note: If the key exists, its value is increased by the given inc.
*
* On error, -1 is returned.
* On success 0 is returned */
static int
inc_iu64 (void *hash, int key, uint64_t inc)
{
int sp;
uint64_t value = inc;
void *ptr;
if (!hash)
return -1;
if ((ptr = tcadbget (hash, &key, sizeof (int), &sp)) != NULL) {
value = (*(uint64_t *) ptr) + inc;
free (ptr);
}
/* if key exists in the database, it is overwritten */
if (!tcadbput (hash, &key, sizeof (int), &value, sizeof (uint64_t)))
LOG_DEBUG (("Unable to tcadbput\n"));
return 0;
}
/* Insert a string key and auto increment its value.
*
* On error, -1 is returned.
* On success the value of the key inserted is returned */
static int
inc_si32 (void *hash, const char *key, int inc)
{
int value = inc;
void *ptr;
if (!hash)
return -1;
if ((ptr = tcadbget2 (hash, key)) != NULL) {
value = (*(int *) ptr) + inc;
free (ptr);
}
/* if key exists in the database, it is overwritten */
if (!tcadbput (hash, key, strlen (key), &value, sizeof (int)))
LOG_DEBUG (("Unable to tcadbput\n"));
return 0;
}
/* Insert a string key and auto increment by uint64_t value.
*
* On error, -1 is returned.
* On success the value of the key inserted is returned */
static int
inc_su64 (void *hash, const char *key, uint64_t inc)
{
uint64_t value = inc;
void *ptr;
if (!hash)
return -1;
if ((ptr = tcadbget2 (hash, key)) != NULL) {
value = (*(uint64_t *) ptr) + inc;
free (ptr);
}
/* if key exists in the database, it is overwritten */
if (!tcadbput (hash, key, strlen (key), &value, sizeof (uint64_t)))
LOG_DEBUG (("Unable to tcadbput\n"));
return 0;
}
/* Insert a string key and auto increment int value.
*
* On error, -1 is returned.
* On success the value of the key inserted is returned */
static int
ins_si32_ai (void *hash, const char *key)
{
int size = 0, value = 0;
if (!hash)
return -1;
size = ht_get_size (hash);
/* the auto increment value starts at SIZE (hash table) + 1 */
value = size > 0 ? size + 1 : 1;
if (ins_si32 (hash, key, value) == -1)
return -1;
return value;
}
#ifdef TCB_MEMHASH
/* Compare if the given needle is in the haystack
*
* if equal, 1 is returned, else 0 */
static int
find_int_key_in_list (void *data, void *needle)
{
return (*(int *) data) == (*(int *) needle) ? 1 : 0;
}
/* Insert an int key and the corresponding GSLList (Single linked-list) value.
* Note: If the key exists within the list, the value is not appended.
*
* On error, -1 is returned.
* On success 0 is returned */
static int
ins_igsl (void *hash, int key, int value)
{
GSLList *list, *match;
int sp;
if (!hash)
return -1;
/* key found, check if key exists within the list */
if ((list = tcadbget (hash, &key, sizeof (int), &sp)) != NULL) {
if ((match = list_find (list, find_int_key_in_list, &value)))
goto out;
list = list_insert_prepend (list, int2ptr (value));
} else {
list = list_create (int2ptr (value));
}
if (!tcadbput (hash, &key, sizeof (int), list, sizeof (GSLList)))
LOG_DEBUG (("Unable to tcadbput\n"));
out:
free (list);
return 0;
}
#endif
/* Get the int value of a given string key.
*
* On error, -1 is returned.
* On success the int value for the given key is returned */
static int
get_si32 (void *hash, const char *key)
{
int ret = 0;
void *ptr;
if (!hash)
return -1;
/* key found, return current value */
if ((ptr = tcadbget2 (hash, key)) != NULL) {
ret = (*(int *) ptr);
free (ptr);
return ret;
}
return -1;
}
/* Get the unsigned int value of a given string key.
*
* On error, 0 is returned.
* On success the int value for the given key is returned */
static uint32_t
get_sui32 (void *hash, const char *key)
{
int ret = 0;
void *ptr;
if (!hash)
return 0;
/* key found, return current value */
if ((ptr = tcadbget2 (hash, key)) != NULL) {
ret = (*(uint32_t *) ptr);
free (ptr);
return ret;
}
return 0;
}
/* Get the uint64_t value of a given string key.
*
* On error, 0 is returned.
* On success the int value for the given key is returned */
static uint64_t
get_su64 (void *hash, const char *key)
{
uint64_t ret = 0;
void *ptr;
if (!hash)
return 0;
/* key found, return current value */
if ((ptr = tcadbget2 (hash, key)) != NULL) {
ret = (*(uint64_t *) ptr);
free (ptr);
return ret;
}
return 0;
}
/* Iterate over all the key/value pairs for the given hash structure
* and set the maximum and minimum values found on an integer key and
* integer value.
*
* Note: This are expensive calls since it has to iterate over all
* key-value pairs
*
* If the hash structure is empty, no values are set.
* On success the minimum and maximum values are set. */
static void
get_ii32_min_max (void *hash, int *min, int *max)
{
int curvalue = 0, i = 0, ksize = 0, sp = 0;
void *key, *ptr;
tcadbiterinit (hash);
while ((key = tcadbiternext (hash, &ksize)) != NULL) {
if ((ptr = tcadbget (hash, key, ksize, &sp)) == NULL) {
free (key);
continue;
}
curvalue = (*(int *) ptr);
if (i++ == 0)
*min = curvalue;
if (curvalue > *max)
*max = curvalue;
if (curvalue < *min)
*min = curvalue;
free (key);
free (ptr);
}
}
/* Iterate over all the key/value pairs for the given hash structure
* and set the maximum and minimum values found on an integer key and
* a uint64_t value.
*
* Note: This are expensive calls since it has to iterate over all
* key-value pairs
*
* If the hash structure is empty, no values are set.
* On success the minimum and maximum values are set. */
static void
get_iu64_min_max (void *hash, uint64_t * min, uint64_t * max)
{
int i = 0, ksize = 0, sp = 0;
uint64_t curvalue = 0;
void *key, *ptr;
tcadbiterinit (hash);
while ((key = tcadbiternext (hash, &ksize)) != NULL) {
if ((ptr = tcadbget (hash, key, ksize, &sp)) == NULL) {
free (key);
continue;
}
curvalue = (*(uint64_t *) ptr);
if (i++ == 0)
*min = curvalue;
if (curvalue > *max)
*max = curvalue;
if (curvalue < *min)
*min = curvalue;
free (key);
free (ptr);
}
}
/* Get the string value of a given int key.
*
* On error, NULL is returned.
* On success the string value for the given key is returned */
static char *
get_is32 (void *hash, int key)
{
int sp;
char *value = NULL;
if (!hash)
return NULL;
if ((value = tcadbget (hash, &key, sizeof (int), &sp)) != NULL)
return value;
return NULL;
}
/* Get the string value of a given string key.
*
* On error, NULL is returned.
* On success the string value for the given key is returned */
static char *
get_ss32 (void *hash, const char *key)
{
char *value = NULL;
if (!hash)
return NULL;
if ((value = tcadbget2 (hash, key)) != NULL)
return value;
return NULL;
}
/* Get the int value of a given int key.
*
* If key is not found, 0 is returned.
* On error, -1 is returned.
* On success the int value for the given key is returned */
static int
get_ii32 (void *hash, int key)
{
int sp, ret = 0;
void *ptr = 0;
if (!hash)
return -1;
/* key found, return current value */
if ((ptr = tcadbget (hash, &key, sizeof (int), &sp)) != NULL) {
ret = (*(int *) ptr);
free (ptr);
return ret;
}
return 0;
}
/* Get the uint64_t value of a given int key.
*
* On error, or if key is not found, 0 is returned.
* On success the uint64_t value for the given key is returned */
static uint64_t
get_iu64 (void *hash, int key)
{
int sp;
uint64_t ret = 0;
void *ptr = 0;
if (!hash)
return 0;
/* key found, return current value */
if ((ptr = tcadbget (hash, &key, sizeof (int), &sp)) != NULL) {
ret = (*(uint64_t *) ptr);
free (ptr);
return ret;
}
return 0;
}
/* Get the GSLList value of a given int key.
*
* On error, or if key is not found, NULL is returned.
* On success the GSLList value for the given key is returned */
static GSLList *
get_igsl (void *hash, int key)
{
int sp;
GSLList *list = NULL;
if (!hash)
return NULL;
/* key found, return current value */
if ((list = tcadbget (hash, &key, sizeof (int), &sp)) != NULL)
return list;
return NULL;
}
/* Get the TCLIST value of a given int key.
*
* On error, or if key is not found, NULL is returned.
* On success the GSLList value for the given key is returned */
static TCLIST *
get_itcli (void *hash, int key)
{
TCLIST *list = NULL;
if (!hash)
return NULL;
/* key found, return current value */
if ((list = tcbdbget4 (hash, &key, sizeof (int))) != NULL)
return list;
return NULL;
}
/* Insert a unique visitor key string (IP/DATE/UA), mapped to an auto
* incremented value.
*
* If the given key exists, its value is returned.
* On error, -1 is returned.
* On success the value of the key inserted is returned */
int
ht_insert_unique_key (const char *key)
{
int value = -1;
void *hash = ht_unique_keys;
if (!hash)
return -1;
if ((value = get_si32 (hash, key)) != -1)
return value;
return ins_si32_ai (hash, key);
}
/* Set the maximum and minimum values found on an integer key and
* integer value found on the MTRC_VISITORS hash structure.
*
* If the hash structure is empty, no values are set.
* On success the minimum and maximum values are set. */
void
ht_get_hits_min_max (GModule module, int *min, int *max)
{
void *hash = get_hash (module, MTRC_HITS);
if (!hash)
return;
get_ii32_min_max (hash, min, max);
}
/* Set the maximum and minimum values found on an integer key and
* integer value found on the MTRC_VISITORS hash structure.
*
* If the hash structure is empty, no values are set.
* On success the minimum and maximum values are set. */
void
ht_get_visitors_min_max (GModule module, int *min, int *max)
{
void *hash = get_hash (module, MTRC_VISITORS);
if (!hash)
return;
get_ii32_min_max (hash, min, max);
}
/* Set the maximum and minimum values found on an integer key and
* a uint64_t value found on the MTRC_BW hash structure.
*
* If the hash structure is empty, no values are set.
* On success the minimum and maximum values are set. */
void
ht_get_bw_min_max (GModule module, uint64_t * min, uint64_t * max)
{
void *hash = get_hash (module, MTRC_BW);
if (!hash)
return;
get_iu64_min_max (hash, min, max);
}
/* Set the maximum and minimum values found on an integer key and
* a uint64_t value found on the MTRC_CUMTS hash structure.
*
* If the hash structure is empty, no values are set.
* On success the minimum and maximum values are set. */
void
ht_get_cumts_min_max (GModule module, uint64_t * min, uint64_t * max)
{
void *hash = get_hash (module, MTRC_CUMTS);
if (!hash)
return;
get_iu64_min_max (hash, min, max);
}
/* Set the maximum and minimum values found on an integer key and
* a uint64_t value found on the MTRC_MAXTS hash structure.
*
* If the hash structure is empty, no values are set.
* On success the minimum and maximum values are set. */
void
ht_get_maxts_min_max (GModule module, uint64_t * min, uint64_t * max)
{
void *hash = get_hash (module, MTRC_MAXTS);
if (!hash)
return;
get_iu64_min_max (hash, min, max);
}
/* Insert a user agent key string, mapped to an auto incremented value.
*
* If the given key exists, its value is returned.
* On error, -1 is returned.
* On success the value of the key inserted is returned */
int
ht_insert_agent_key (const char *key)
{
int value = -1;
void *hash = ht_agent_keys;
if (!hash)
return -1;
if ((value = get_si32 (hash, key)) != -1)
return value;
return ins_si32_ai (hash, key);
}
/* Insert a user agent int key, mapped to a user agent string value.
*
* On error, -1 is returned.
* On success 0 is returned */
int
ht_insert_agent_value (int key, const char *value)
{
void *hash = ht_agent_vals;
if (!hash)
return -1;
return ins_is32 (hash, key, value);
}
/* Insert a keymap string key.
*
* If the given key exists, its value is returned.
* On error, -1 is returned.
* On success the value of the key inserted is returned */
int
ht_insert_keymap (GModule module, const char *key)
{
int value = -1;
void *hash = get_hash (module, MTRC_KEYMAP);
if (!hash)
return -1;
if ((value = get_si32 (hash, key)) != -1)
return value;
return ins_si32_ai (hash, key);
}
/* Insert a datamap int key and string value.
*
* On error, -1 is returned.
* On success 0 is returned */
int
ht_insert_datamap (GModule module, int key, const char *value)
{
void *hash = get_hash (module, MTRC_DATAMAP);
if (!hash)
return -1;
return ins_is32 (hash, key, value);
}
/* Insert a rootmap int key from the keymap store mapped to its string value.
*
* On error, -1 is returned.
* On success 0 is returned */
int
ht_insert_rootmap (GModule module, int key, const char *value)
{
void *hash = get_hash (module, MTRC_ROOTMAP);
if (!hash)
return -1;
return ins_is32 (hash, key, value);
}
/* Insert a uniqmap string key.
*
* If the given key exists, 0 is returned.
* On error, -1 is returned.
* On success the value of the key inserted is returned */
int
ht_insert_uniqmap (GModule module, const char *key)
{
int value = -1;
void *hash = get_hash (module, MTRC_UNIQMAP);