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dispatcher.c
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dispatcher.c
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/**
* dispatcher module -- stateless load balancing
*
* Copyright (C) 2004-2005 FhG Fokus
* Copyright (C) 2006-2010 Voice Sistem SRL
*
* This file is part of opensips, a free SIP server.
*
* opensips 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 2 of the License, or
* (at your option) any later version
*
* opensips 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* History
* -------
* 2004-07-31 first version, by daniel
* 2007-01-11 Added a function to check if a specific gateway is in a group
* (carsten - Carsten Bock, BASIS AudioNet GmbH)
* 2007-02-09 Added active probing of failed destinations and automatic
* re-enabling of destinations (carsten)
* 2007-05-08 Ported the changes to SVN-Trunk and renamed ds_is_domain
* to ds_is_from_list. (carsten)
* 2007-07-18 Added support for load/reload groups from DB
* reload triggered from ds_reload MI_Command (ancuta)
* 2009-05-18 Added support for weights for the destinations;
* added support for custom "attrs" (opaque string) (bogdan)
* 2013-12-02 Added support state persistency (restart and reload) (bogdan)
* 2013-12-05 Added a safer reload mechanism based on locking read/writter (bogdan)
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include "../../sr_module.h"
#include "../../mi/mi.h"
#include "../../dprint.h"
#include "../../error.h"
#include "../../trim.h"
#include "../../route.h"
#include "../../mem/mem.h"
#include "../../mod_fix.h"
#include "../../db/db.h"
#include "../freeswitch/fs_api.h"
#include "dispatch.h"
#include "ds_bl.h"
#include "ds_fixups.h"
#define DS_SET_ID_COL "setid"
#define DS_DEST_URI_COL "destination"
#define DS_DEST_SOCK_COL "socket"
#define DS_DEST_STATE_COL "state"
#define DS_DEST_WEIGHT_COL "weight"
#define DS_DEST_PRIO_COL "priority"
#define DS_DEST_ATTRS_COL "attrs"
#define DS_DEST_DESCRIPTION_COL "description"
#define DS_TABLE_NAME "dispatcher"
#define DS_PARTITION_DELIM ':'
/** parameters */
static str pvar_algo_param = str_init("");
str hash_pvar_param = {NULL, 0};
pv_elem_t * hash_param_model = NULL;
int probing_threshhold = 3; /* number of failed requests, before a destination
is taken into probing */
str ds_ping_method = {"OPTIONS",7};
str ds_ping_from = {"sip:dispatcher@localhost", 24};
static int ds_ping_interval = 0;
/* no MAX-FWD enforced from the module */
int ds_ping_maxfwd = -1;
int ds_probing_mode = 0;
int ds_persistent_state = 1;
int_list_t *ds_probing_list = NULL;
/* db partiton info */
typedef struct _ds_db_head
{
str partition_name;
str db_url;
str table_name;
str dst_avp;
str grp_avp;
str cnt_avp;
str sock_avp;
str attrs_avp;
struct _ds_db_head *next;
} ds_db_head_t;
ds_db_head_t default_db_head = {
str_init(DS_DEFAULT_PARTITION_NAME),
{NULL, -1},
{NULL, -1},
{NULL, -1},
{NULL, -1},
{NULL, -1},
{NULL, -1},
{NULL, -1},
NULL
};
ds_db_head_t *ds_db_heads = NULL;
typedef struct {
str name;
str default_value;
str* (*getter_func)(ds_db_head_t*);
} partition_specific_param_t;
#define DEF_GETTER_FUNC(PARAM_FIELD) str* getter_ ## PARAM_FIELD (ds_db_head_t \
*head) { \
return &(head-> PARAM_FIELD);}
#define GETTER_FUNC(PARAM_FIELD) &getter_ ## PARAM_FIELD
#define PARTITION_SPECIFIC_PARAM(PARAM_NAME, DEFAULT_VALUE) \
{str_init(#PARAM_NAME), str_init(DEFAULT_VALUE), GETTER_FUNC(PARAM_NAME)}
/*db common attributes*/
str ds_set_id_col = str_init(DS_SET_ID_COL);
str ds_dest_uri_col = str_init(DS_DEST_URI_COL);
str ds_dest_sock_col = str_init(DS_DEST_SOCK_COL);
str ds_dest_state_col = str_init(DS_DEST_STATE_COL);
str ds_dest_weight_col= str_init(DS_DEST_WEIGHT_COL);
str ds_dest_prio_col = str_init(DS_DEST_PRIO_COL);
str ds_dest_attrs_col = str_init(DS_DEST_ATTRS_COL);
str ds_dest_description_col = str_init(DS_DEST_DESCRIPTION_COL);
str ds_setid_pvname = {NULL, 0};
pv_spec_t ds_setid_pv;
static str options_reply_codes_str= {0, 0};
static int* options_reply_codes = NULL;
static int options_codes_no;
static char *probing_sock_s = NULL;
struct socket_info *probing_sock = NULL;
ds_partition_t *partitions = NULL, *default_partition = NULL;
/* event */
static str dispatcher_event = str_init("E_DISPATCHER_STATUS");
event_id_t dispatch_evi_id;
int fetch_freeswitch_stats;
int max_freeswitch_weight = 100;
/** module functions */
static int mod_init(void);
static int ds_child_init(int rank);
static int w_ds_select_dst(struct sip_msg*, char*, char*);
static int w_ds_select_dst_limited(struct sip_msg*, char*, char*, char*);
static int w_ds_select_domain(struct sip_msg*, char*, char*);
static int w_ds_select_domain_limited(struct sip_msg*, char*, char*, char*);
static int w_ds_next_dst(struct sip_msg*, char*);
static int w_ds_next_domain(struct sip_msg*, char*);
static int w_ds_mark_dst(struct sip_msg*, char*, char*);
static int w_ds_mark_dst1(struct sip_msg*, char *);
static int w_ds_count(struct sip_msg*, char*, const char *, char*);
static int w_ds_is_in_list(struct sip_msg*, char*, char*, char*, char*);
static void destroy(void);
static struct mi_root* ds_mi_set(struct mi_root* cmd, void* param);
static struct mi_root* ds_mi_list(struct mi_root* cmd, void* param);
static struct mi_root* ds_mi_reload(struct mi_root* cmd_tree, void* param);
static int mi_child_init(void);
/* Parameters setters */
static int set_partition_arguments(unsigned int type, void * val);
static int set_probing_list(unsigned int type, void * val);
static cmd_export_t cmds[]={
{"ds_select_dst", (cmd_function)w_ds_select_dst, 2,
ds_select_fixup, NULL,
REQUEST_ROUTE|BRANCH_ROUTE|FAILURE_ROUTE},
{"ds_select_dst", (cmd_function)w_ds_select_dst_limited, 3,
ds_select_fixup, NULL,
REQUEST_ROUTE|BRANCH_ROUTE|FAILURE_ROUTE},
{"ds_select_domain", (cmd_function)w_ds_select_domain, 2,
ds_select_fixup, NULL,
REQUEST_ROUTE|BRANCH_ROUTE|FAILURE_ROUTE},
{"ds_select_domain", (cmd_function)w_ds_select_domain_limited, 3,
ds_select_fixup, NULL,
REQUEST_ROUTE|BRANCH_ROUTE|FAILURE_ROUTE},
{"ds_next_dst", (cmd_function)w_ds_next_dst, 0,
NULL , NULL,
REQUEST_ROUTE|FAILURE_ROUTE},
{"ds_next_dst", (cmd_function)w_ds_next_dst, 1,
ds_next_fixup, NULL,
REQUEST_ROUTE|FAILURE_ROUTE},
{"ds_next_domain", (cmd_function)w_ds_next_domain, 0,
NULL , NULL,
REQUEST_ROUTE|FAILURE_ROUTE},
{"ds_next_domain", (cmd_function)w_ds_next_domain, 1,
ds_next_fixup, NULL,
REQUEST_ROUTE|FAILURE_ROUTE},
{"ds_mark_dst", (cmd_function)w_ds_mark_dst, 0,
NULL , NULL,
REQUEST_ROUTE|FAILURE_ROUTE},
{"ds_mark_dst", (cmd_function)w_ds_mark_dst1, 1,
fixup_sgp_null, NULL,
REQUEST_ROUTE|FAILURE_ROUTE},
{"ds_mark_dst", (cmd_function)w_ds_mark_dst, 2,
ds_mark_fixup, NULL,
REQUEST_ROUTE|FAILURE_ROUTE},
{"ds_is_in_list", (cmd_function)w_ds_is_in_list, 2,
in_list_fixup, NULL,
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE},
{"ds_is_in_list", (cmd_function)w_ds_is_in_list, 3,
in_list_fixup, NULL,
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE},
{"ds_is_in_list", (cmd_function)w_ds_is_in_list, 4,
in_list_fixup, NULL,
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE},
{"ds_count", (cmd_function)w_ds_count, 3,
ds_count_fixup, NULL,
REQUEST_ROUTE|FAILURE_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE|TIMER_ROUTE|EVENT_ROUTE},
{0,0,0,0,0,0}
};
static param_export_t params[]={
{"partition", STR_PARAM | USE_FUNC_PARAM, (void*)&set_partition_arguments},
{"db_url", STR_PARAM, &default_db_head.db_url.s},
{"table_name", STR_PARAM, &default_db_head.table_name.s},
{"setid_col", STR_PARAM, &ds_set_id_col.s},
{"destination_col", STR_PARAM, &ds_dest_uri_col.s},
{"socket_col", STR_PARAM, &ds_dest_sock_col.s},
{"state_col", STR_PARAM, &ds_dest_state_col.s},
{"weight_col", STR_PARAM, &ds_dest_weight_col.s},
{"priority_col", STR_PARAM, &ds_dest_prio_col.s},
{"attrs_col", STR_PARAM, &ds_dest_attrs_col.s},
{"description_col", STR_PARAM, &ds_dest_description_col.s},
{"dst_avp", STR_PARAM, &default_db_head.dst_avp.s},
{"grp_avp", STR_PARAM, &default_db_head.grp_avp.s},
{"cnt_avp", STR_PARAM, &default_db_head.cnt_avp.s},
{"sock_avp", STR_PARAM, &default_db_head.sock_avp.s},
{"attrs_avp", STR_PARAM, &default_db_head.attrs_avp.s},
{"hash_pvar", STR_PARAM, &hash_pvar_param.s},
{"setid_pvar", STR_PARAM, &ds_setid_pvname.s},
{"pvar_algo_pattern", STR_PARAM, &pvar_algo_param.s},
{"ds_probing_threshhold", INT_PARAM, &probing_threshhold},
{"ds_ping_method", STR_PARAM, &ds_ping_method.s},
{"ds_ping_from", STR_PARAM, &ds_ping_from.s},
{"ds_ping_interval", INT_PARAM, &ds_ping_interval},
{"ds_ping_maxfwd", INT_PARAM, &ds_ping_maxfwd},
{"ds_probing_mode", INT_PARAM, &ds_probing_mode},
{"options_reply_codes", STR_PARAM, &options_reply_codes_str.s},
{"ds_probing_sock", STR_PARAM, &probing_sock_s},
{"ds_probing_list", STR_PARAM|USE_FUNC_PARAM, (void*)set_probing_list},
{"ds_define_blacklist", STR_PARAM|USE_FUNC_PARAM, (void*)set_ds_bl},
{"persistent_state", INT_PARAM, &ds_persistent_state},
{"fetch_freeswitch_stats", INT_PARAM, &fetch_freeswitch_stats},
{"max_freeswitch_weight", INT_PARAM, &max_freeswitch_weight},
{0,0,0}
};
static module_dependency_t *get_deps_ds_ping_interval(param_export_t *param)
{
if (*(int *)param->param_pointer <= 0)
return NULL;
return alloc_module_dep(MOD_TYPE_DEFAULT, "tm", DEP_ABORT);
}
static module_dependency_t *get_deps_fetch_fs_load(param_export_t *param)
{
if (*(int *)param->param_pointer <= 0)
return NULL;
return alloc_module_dep(MOD_TYPE_DEFAULT, "freeswitch", DEP_ABORT);
}
static mi_export_t mi_cmds[] = {
{ "ds_set_state", 0, ds_mi_set, 0, 0, 0 },
{ "ds_list", 0, ds_mi_list, 0, 0, 0 },
{ "ds_reload", 0, ds_mi_reload, 0, 0, mi_child_init},
{ 0, 0, 0, 0, 0, 0}
};
static dep_export_t deps = {
{ /* OpenSIPS module dependencies */
{ MOD_TYPE_SQLDB, NULL, DEP_ABORT },
{ MOD_TYPE_NULL, NULL, 0 },
},
{ /* modparam dependencies */
{ "ds_ping_interval", get_deps_ds_ping_interval },
{ "fetch_freeswitch_stats", get_deps_fetch_fs_load },
{ NULL, NULL },
},
};
/** module exports */
struct module_exports exports= {
"dispatcher",
MOD_TYPE_DEFAULT,/* class of this module */
MODULE_VERSION,
DEFAULT_DLFLAGS, /* dlopen flags */
0, /* load function */
&deps, /* OpenSIPS module dependencies */
cmds,
0,
params,
0, /* exported statistics */
mi_cmds, /* exported MI functions */
0, /* exported pseudo-variables */
0, /* exported transformations */
0, /* extra processes */
0, /* module pre-initialization function */
mod_init, /* module initialization function */
(response_function) 0,
(destroy_function) destroy,
ds_child_init, /* per-child init function */
};
DEF_GETTER_FUNC(db_url);
DEF_GETTER_FUNC(table_name);
DEF_GETTER_FUNC(dst_avp);
DEF_GETTER_FUNC(grp_avp);
DEF_GETTER_FUNC(cnt_avp);
DEF_GETTER_FUNC(sock_avp);
DEF_GETTER_FUNC(attrs_avp);
static partition_specific_param_t partition_params[] = {
{str_init("db_url"), {NULL, 0}, GETTER_FUNC(db_url)},
PARTITION_SPECIFIC_PARAM (table_name, DS_TABLE_NAME),
PARTITION_SPECIFIC_PARAM (dst_avp, "$avp(ds_dst_failover)"),
PARTITION_SPECIFIC_PARAM (grp_avp, "$avp(ds_grp_failover)"),
PARTITION_SPECIFIC_PARAM (cnt_avp, "$avp(ds_cnt_failover)"),
PARTITION_SPECIFIC_PARAM (sock_avp, "$avp(ds_sock_failover)"),
PARTITION_SPECIFIC_PARAM (attrs_avp, ""),
};
static const unsigned int partition_param_count = sizeof (partition_params) /
sizeof (partition_specific_param_t);
/*
Splits the arg from "partition_name[DELIM]value" to partition_name
and value. The arg is modified and will contain only value
*/
static int split_partition_argument(str *arg, str *partition_name)
{
char *delim_pos = memchr(arg->s, DS_PARTITION_DELIM, arg->len);
partition_name->s = NULL;
partition_name->len = 0;
if (delim_pos == NULL) {
/* No delim so the default partition is used */
return 0;
} else if (delim_pos - arg->s + 1 == arg->len){
LM_WARN("possibly empty parameter %.*s\n", arg->len, arg->s);
return 0;
} else {
switch (DS_PARTITION_DELIM) {
case ':':
if (*(delim_pos + 1) == '/'){
/* Fake delimiter as in mysql://... */
return 0;
}
/* else An actual delimiter has been found */
break;
default:
LM_CRIT("Partition delimiter %c was not properly implemented\n",
DS_PARTITION_DELIM);
return -1;
break;
}
}
partition_name->s = arg->s;
partition_name->len = delim_pos - arg->s;
arg->s = delim_pos + 1;
arg->len -= partition_name->len + 1;
trim(partition_name);
for (;arg->s[0] == ' ' && arg->len; ++arg->s, --arg->len);
return 0;
}
/*
Parse an argument "partition_name[DELIM]arg_value".
The arg string will be modified and will contain only "arg_value"
The found_head will contain the head which has the name
"partition_name"
If the head doesn't exist it will be created
*/
static int parse_partition_argument(str *arg, ds_db_head_t **found_head)
{
str partition_name;
if (split_partition_argument(arg, &partition_name) != 0)
return -1;
if (partition_name.len == 0
|| str_strcmp(&default_db_head.partition_name, &partition_name) == 0){
*found_head = &default_db_head;
return 0;
}
/* There is a partition name in arg so we won't use default head*/
ds_db_head_t *heads_it;
for (heads_it = ds_db_heads; heads_it; heads_it = heads_it->next)
if (memcmp(partition_name.s, heads_it->partition_name.s,
partition_name.len) == 0){
/* This partition already exists */
*found_head = heads_it;
return 0;
}
/* The partition does not exist - we create it */
ds_db_head_t *new_partition = pkg_malloc(sizeof (ds_db_head_t));
if (new_partition == NULL) {
LM_ERR("failed to allocate data in shm\n");
return -1;
}
/* Set default head values */
memset(new_partition, 0, sizeof(ds_db_head_t));
new_partition->next = ds_db_heads;
ds_db_heads = new_partition;
new_partition->partition_name = partition_name;
*found_head = new_partition;
return 0;
}
/*
Find partition by name. Return null if no partition is matching the name
*/
static ds_partition_t* find_partition_by_name (const str *partition_name)
{
if (partition_name->len == 0)
return default_partition;
ds_partition_t *part_it;
for (part_it = partitions; part_it; part_it = part_it->next)
if (str_strcmp(&part_it->name, partition_name) == 0)
break;
return part_it; //and NULL if there's no partition matching the name
}
/* Load setids this proxy is responsible for probing into list */
static int set_probing_list(unsigned int type, void *val) {
str input = {(char*)val, strlen(val)};
if (set_list_from_string(input, &ds_probing_list) != 0 ||
ds_probing_list == NULL)
{
LM_ERR("Invalid set_probing_list input\n");
return -1;
}
return 0;
}
/* We parse the "partition" argument as: partition_name:arg1=val1; arg2=val2;*/
static int set_partition_arguments(unsigned int type, void *val)
{
static const char end_pair_delim = ';';
static const char eq_val_delim = '=';
static const str blacklist_param = str_init("ds_define_blacklist");
unsigned int i;
str raw_line = {(char*)val, strlen(val)};
str arg, value;
ds_db_head_t *head = NULL;
if (raw_line.s[raw_line.len - 1] != end_pair_delim)
raw_line.s[raw_line.len++] = end_pair_delim;
if (parse_partition_argument(&raw_line, &head) != 0)
return -1;
char *first_pos = raw_line.s; /* just for error messages */
char *end_pair_pos = q_memchr(raw_line.s, end_pair_delim, raw_line.len);
char *eq_pos = q_memchr(raw_line.s, eq_val_delim, raw_line.len);
while (end_pair_pos != NULL && eq_pos != NULL) {
arg.s = raw_line.s;
arg.len = eq_pos - arg.s;
value.s = eq_pos + 1;
value.len = end_pair_pos - eq_pos - 1;
trim(&arg);
trim(&value);
if (arg.len <= 0 || value.len <= 0) {
LM_ERR("Wrong format in partition arguments specifier at pos %d\n",
(int)(arg.s - first_pos + 1));
return -1;
}
for (i = 0; i < partition_param_count; ++i)
if (str_strcmp(&arg, &partition_params[i].name) == 0) {
*(partition_params[i].getter_func(head)) = value;
break;
}
if ( i == partition_param_count) {
if (str_strcmp(&blacklist_param, &arg) == 0) {
value.s[value.len] = 0;
if (set_ds_bl_partition(value.s, head->partition_name) != 0)
return -1;
}
else{
/* No parameter found */
LM_ERR("No such parameter known: %.*s\n", arg.len, arg.s);
return -1;
}
}
raw_line.s = end_pair_pos + 1;
end_pair_pos = q_memchr(raw_line.s, end_pair_delim, raw_line.len);
eq_pos = q_memchr(raw_line.s, eq_val_delim, raw_line.len);
}
return 0;
}
static int partition_init(ds_db_head_t *db_head, ds_partition_t *partition)
{
/* Load stuff from DB. URL cannot be null!*/
if (db_head->db_url.s == NULL){
LM_ERR("[%.*s] DB URL is not defined!\n", db_head->partition_name.len,
db_head->partition_name.s);
return -1;
}
memset(partition, 0, sizeof(ds_partition_t));
partition->name = db_head->partition_name;
partition->table_name = db_head->table_name;
partition->db_url = db_head->db_url;
partition->db_handle = pkg_malloc(sizeof(struct db_con_t *));
if (partition->db_handle == NULL) {
LM_ERR("Failed to allocate private data\n");
return -1;
}
*partition->db_handle = NULL;
/* handle AVPs spec */
pv_spec_t avp_spec;
if (pv_parse_spec(&db_head->dst_avp, &avp_spec)==0
|| avp_spec.type!=PVT_AVP) {
LM_ERR("malformed or non AVP %.*s AVP definition\n",
db_head->dst_avp.len, db_head->dst_avp.s);
return -1;
}
if(pv_get_avp_name(0, &(avp_spec.pvp), &partition->dst_avp_name,
&partition->dst_avp_type)!=0) {
LM_ERR("[%.*s]- invalid AVP definition\n", db_head->dst_avp.len,
db_head->dst_avp.s);
return -1;
}
if (pv_parse_spec(&db_head->grp_avp, &avp_spec)==0
|| avp_spec.type!=PVT_AVP) {
LM_ERR("malformed or non AVP %.*s AVP definition\n",
db_head->grp_avp.len, db_head->grp_avp.s);
return -1;
}
if(pv_get_avp_name(0, &(avp_spec.pvp), &partition->grp_avp_name,
&partition->grp_avp_type)!=0) {
LM_ERR("[%.*s]- invalid AVP definition\n", db_head->grp_avp.len,
db_head->grp_avp.s);
return -1;
}
if (pv_parse_spec(&db_head->cnt_avp, &avp_spec)==0
|| avp_spec.type!=PVT_AVP) {
LM_ERR("malformed or non AVP %.*s AVP definition\n",
db_head->cnt_avp.len, db_head->cnt_avp.s);
return -1;
}
if(pv_get_avp_name(0, &(avp_spec.pvp), &partition->cnt_avp_name,
&partition->cnt_avp_type)!=0) {
LM_ERR("[%.*s]- invalid AVP definition\n", db_head->cnt_avp.len,
db_head->cnt_avp.s);
return -1;
}
if (pv_parse_spec(&db_head->sock_avp, &avp_spec)==0
|| avp_spec.type!=PVT_AVP) {
LM_ERR("malformed or non AVP %.*s AVP definition\n",
db_head->sock_avp.len, db_head->sock_avp.s);
return -1;
}
if(pv_get_avp_name(0, &(avp_spec.pvp), &partition->sock_avp_name,
&partition->sock_avp_type)!=0){
LM_ERR("[%.*s]- invalid AVP definition\n", db_head->sock_avp.len,
db_head->sock_avp.s);
return -1;
}
if (db_head->attrs_avp.s && db_head->attrs_avp.len > 0) {
if (pv_parse_spec(&db_head->attrs_avp, &avp_spec)==0
|| avp_spec.type!=PVT_AVP) {
LM_ERR("malformed or non AVP %.*s AVP definition\n",
db_head->attrs_avp.len, db_head->attrs_avp.s);
return -1;
}
if (pv_get_avp_name(0, &(avp_spec.pvp), &partition->attrs_avp_name,
&partition->attrs_avp_type)!=0){
LM_ERR("[%.*s]- invalid AVP definition\n", db_head->attrs_avp.len,
db_head->attrs_avp.s);
return -1;
}
} else {
partition->attrs_avp_name = -1;
partition->attrs_avp_type = 0;
}
return 0;
}
static int inherit_from_default_head(ds_db_head_t *head)
{
unsigned int i;
if (head == &default_db_head)
return 0;
for (i = 0; i < partition_param_count; ++i) {
str *def_param = partition_params[i].getter_func(&default_db_head);
str *p_param = partition_params[i].getter_func(head);
if (p_param->len == 0 && def_param->len > 0) {
/* Parameter not specified for function */
if (strstr(partition_params[i].name.s, "avp")
&& def_param->len > 0) {
char *avp_end = q_memrchr(def_param->s, ')', def_param->len);
if (avp_end == NULL) {
LM_ERR ("wrong avp name %.*s\n", def_param->len,
def_param->s);
return -1;
}
p_param->len = def_param->len + 1 + head->partition_name.len;
p_param->s = pkg_malloc(p_param->len);
if (p_param->s == NULL) {
LM_ERR ("no more private memory\n");
return -1;
}
int fix_len = avp_end - def_param->s;
int rem_len = def_param->len - fix_len;
memcpy(p_param->s, def_param->s, fix_len);
p_param->s[fix_len] = '_';
memcpy(p_param->s + fix_len + 1, head->partition_name.s,
head->partition_name.len);
memcpy(p_param->s + fix_len + 1 + head->partition_name.len,
def_param->s + fix_len, rem_len);
}
else
memcpy(p_param, def_param, sizeof(str));
}
}
return 0;
}
void set_default_head_values(ds_db_head_t *head)
{
unsigned int i;
for (i = 0; i < partition_param_count; ++i) {
str *p_val = partition_params[i].getter_func(head);
if (p_val->s == NULL)
*p_val = partition_params[i].default_value;
else if (p_val->len == -1)
p_val->len = strlen(p_val -> s);
}
}
static inline int check_if_default_head_is_ok(void)
{
unsigned int i;
for (i = 0; i < partition_param_count; ++i)
if (partition_params[i].getter_func(&default_db_head)->s != NULL)
return 1;
return 0;
}
/**
* init module function
*/
static int mod_init(void)
{
LM_DBG("initializing ...\n");
if (check_if_default_head_is_ok()) {
default_db_head.next = ds_db_heads;
ds_db_heads = &default_db_head;
}
set_default_head_values(&default_db_head);
if (!ds_db_heads) {
LM_ERR("missing default partition, "
"please specify the 'db_url' parameter\n");
return -1;
}
ds_set_id_col.len = strlen(ds_set_id_col.s);
ds_dest_uri_col.len = strlen(ds_dest_uri_col.s);
ds_dest_sock_col.len = strlen(ds_dest_sock_col.s);
ds_dest_state_col.len = strlen(ds_dest_state_col.s);
ds_dest_weight_col.len = strlen(ds_dest_weight_col.s);
ds_dest_attrs_col.len = strlen(ds_dest_attrs_col.s);
if (fetch_freeswitch_stats) {
if (load_fs_api(&fs_api) == -1) {
LM_ERR("failed to load the FS API!\n");
return -1;
}
}
if(hash_pvar_param.s && (hash_pvar_param.len=strlen(hash_pvar_param.s))>0){
if(pv_parse_format(&hash_pvar_param, &hash_param_model) < 0
|| hash_param_model==NULL) {
LM_ERR("malformed PV string: %s\n", hash_pvar_param.s);
return -1;
}
} else {
hash_param_model = NULL;
}
if(ds_setid_pvname.s && (ds_setid_pvname.len=strlen(ds_setid_pvname.s))>0){
if(pv_parse_spec(&ds_setid_pvname, &ds_setid_pv)==NULL
|| !pv_is_w(&ds_setid_pv))
{
LM_ERR("[%s]- invalid setid_pvname\n", ds_setid_pvname.s);
return -1;
}
}
pvar_algo_param.len = strlen(pvar_algo_param.s);
if (pvar_algo_param.len)
ds_pvar_parse_pattern(pvar_algo_param);
if (init_ds_bls()!=0) {
LM_ERR("failed to init DS blacklists\n");
return E_CFG;
}
/* Creating partitions from head */
ds_db_head_t *head_it = ds_db_heads;
while (head_it){
if (inherit_from_default_head(head_it) != 0)
return -1;
ds_partition_t *partition = shm_malloc (sizeof(ds_partition_t));
if (partition_init(head_it, partition) != 0)
return -1;
partition->next = partitions;
partitions = partition;
if (init_ds_data(partition)!=0) {
LM_ERR("failed to init DS data holder\n");
return -1;
}
/* open DB connection to load provisioning data */
if (init_ds_db(partition)!= 0) {
LM_ERR("failed to init database support\n");
return -1;
}
/* do the actual data load */
if (ds_reload_db(partition)!=0) {
LM_ERR("failed to load data from DB\n");
return -1;
}
/* close DB connection */
ds_disconnect_db(partition);
ds_db_head_t *aux = head_it;
/* We keep track of corespondig default parition */
if (head_it == &default_db_head)
default_partition = partition;
head_it = head_it->next;
if (aux != &default_db_head)
pkg_free(aux);
}
/* Only, if the Probing-Timer is enabled the TM-API needs to be loaded: */
if (ds_ping_interval > 0)
{
load_tm_f load_tm;
str host;
int port,proto;
if (ds_ping_from.s)
ds_ping_from.len = strlen(ds_ping_from.s);
if (ds_ping_method.s)
ds_ping_method.len = strlen(ds_ping_method.s);
/* parse the list of reply codes to be counted as success */
if(options_reply_codes_str.s) {
options_reply_codes_str.len = strlen(options_reply_codes_str.s);
if(parse_reply_codes(&options_reply_codes_str,&options_reply_codes,
&options_codes_no )< 0) {
LM_ERR("Bad format for options_reply_code parameter"
" - Need a code list separated by commas\n");
return -1;
}
}
/* parse and look for the socket to ping from */
if (probing_sock_s && probing_sock_s[0]!=0 ) {
if (parse_phostport( probing_sock_s, strlen(probing_sock_s),
&host.s, &host.len, &port, &proto)!=0 ) {
LM_ERR("socket description <%s> is not valid\n",
probing_sock_s);
return -1;
}
probing_sock = grep_sock_info( &host, port, proto);
if (probing_sock==NULL) {
LM_ERR("socket <%s> is not local to opensips (we must listen "
"on it\n", probing_sock_s);
return -1;
}
}
/* TM-Bindings */
load_tm=(load_tm_f)find_export("load_tm", 0, 0);
if (load_tm==NULL) {
LM_ERR("failed to bind to the TM-Module - required for probing\n");
return -1;
}
/* let the auto-loading function load all TM stuff */
if (load_tm( &tmb ) == -1) {
LM_ERR("could not load the TM-functions - disable DS ping\n");
return -1;
}
/* Register the PING-Timer */
if (register_timer("ds-pinger", ds_check_timer, NULL,
ds_ping_interval, TIMER_FLAG_DELAY_ON_DELAY)<0) {
LM_ERR("failed to register timer for probing!\n");
return -1;
}
/* Register the weight-recalculation timer */
if (fetch_freeswitch_stats &&
register_timer("ds-update-weights", ds_update_weights, NULL,
fs_api.stats_update_interval, TIMER_FLAG_SKIP_ON_DELAY)<0) {
LM_ERR("failed to register timer for weight recalc!\n");
return -1;
}
}
/* register timer to flush the state of destination back to DB */
if (ds_persistent_state && register_timer("ds-flusher", ds_flusher_routine,
NULL, 30 , TIMER_FLAG_SKIP_ON_DELAY)<0) {
LM_ERR("failed to register timer for DB flushing!\n");
return -1;
}
dispatch_evi_id = evi_publish_event(dispatcher_event);
if (dispatch_evi_id == EVI_ERROR)
LM_ERR("cannot register dispatcher event\n");
return 0;
}
/*
* Per process init function
*/
#include "../../pt.h"
static int ds_child_init(int rank)
{
ds_partition_t *partition_it;
/* we need DB connection from the worker procs (for the flushing) */
if ( rank>=1 ) {
for (partition_it = partitions; partition_it;
partition_it = partition_it->next){
if (partition_it->db_url.s)
if (ds_connect_db(partition_it) != 0) {
LM_ERR("failed to do DB connect\n");
return -1;
}
}
}
return 0;
}
static int mi_child_init(void)
{
ds_partition_t *partition_it;
for (partition_it = partitions; partition_it;
partition_it = partition_it->next)
if (partition_it->db_url.s)
if (ds_connect_db(partition_it) != 0)
return -1;
return 0;
}
/**
* destroy function
*/
static void destroy(void)
{
ds_partition_t *part_it = partitions, *aux;
LM_DBG("destroying module ...\n");
/* flush the state of the destinations */
if (ds_persistent_state) {
/* open the DB conns*/
for (part_it = partitions; part_it; part_it = part_it->next) {
if (part_it->db_url.s)
if (ds_connect_db(part_it) != 0) {
LM_ERR("failed to do DB connect\n");
}
}
ds_flusher_routine(0, NULL);
}
while (part_it) {
ds_destroy_data(part_it);
aux = part_it;
part_it = part_it->next;
ds_disconnect_db(aux);
pkg_free(aux->db_handle);
shm_free(aux);
}
/* destroy blacklists */
destroy_ds_bls();
/* destroy probing list */
if (ds_probing_list)
free_int_list(ds_probing_list, NULL);
}
#define CHECK_AND_EXPAND_LIST(_list_) \
do{\
if (_list_->type == GPARAM_TYPE_PVS) { \
_list_ ## _exp_end = _list_->next; \
_list_ ## _exp_start = set_list_from_pvs(msg, _list_->v.pvs,\
_list_->next);\
if (_list_ ## _exp_start == NULL) {\
LM_ERR("error when expanding " #_list_ " variable\n");\
return -1;\