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switch_core_sqldb.c
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/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2014, Anthony Minessale II <anthm@freeswitch.org>
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Anthony Minessale II <anthm@freeswitch.org>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Anthony Minessale II <anthm@freeswitch.org>
* Michael Jerris <mike@jerris.com>
* Paul D. Tinsley <pdt at jackhammer.org>
* Emmanuel Schmidbauer <eschmidbauer@gmail.com>
* Andrey Volk <andywolk@gmail.com>
*
*
* switch_core_sqldb.c -- Main Core Library (statistics tracker)
*
*/
#include <switch.h>
#include "private/switch_core_pvt.h"
#define SWITCH_SQL_QUEUE_LEN 100000
#define SWITCH_SQL_QUEUE_PAUSE_LEN 90000
struct switch_cache_db_handle {
char name[CACHE_DB_LEN];
switch_cache_db_handle_type_t type;
switch_cache_db_native_handle_t native_handle;
time_t last_used;
switch_mutex_t *mutex;
switch_memory_pool_t *pool;
int32_t flags;
unsigned long hash;
unsigned long thread_hash;
char creator[CACHE_DB_LEN];
char last_user[CACHE_DB_LEN];
uint32_t use_count;
uint64_t total_used_count;
struct switch_cache_db_handle *next;
};
static struct {
switch_memory_pool_t *memory_pool;
switch_thread_t *db_thread;
int db_thread_running;
switch_bool_t manage;
switch_mutex_t *dbh_mutex;
switch_mutex_t *ctl_mutex;
switch_cache_db_handle_t *handle_pool;
uint32_t total_handles;
uint32_t total_used_handles;
switch_cache_db_handle_t *dbh;
switch_sql_queue_manager_t *qm;
int paused;
} sql_manager;
static void switch_core_sqldb_start_thread(void);
static void switch_core_sqldb_stop_thread(void);
#define database_interface_handle_callback_exec(database_interface, dih, sql, callback, pdata, err) database_interface->callback_exec_detailed(__FILE__, (char *)__SWITCH_FUNC__, __LINE__, dih, sql, callback, pdata, err)
#define database_interface_handle_exec(database_interface, dih, sql, err) database_interface->exec_detailed(__FILE__, (char *)__SWITCH_FUNC__, __LINE__, dih, sql, err)
static switch_cache_db_handle_t *create_handle(switch_cache_db_handle_type_t type)
{
switch_cache_db_handle_t *new_dbh = NULL;
switch_memory_pool_t *pool = NULL;
switch_core_new_memory_pool(&pool);
new_dbh = switch_core_alloc(pool, sizeof(*new_dbh));
new_dbh->pool = pool;
new_dbh->type = type;
switch_mutex_init(&new_dbh->mutex, SWITCH_MUTEX_NESTED, new_dbh->pool);
return new_dbh;
}
static void destroy_handle(switch_cache_db_handle_t **dbh)
{
if (dbh && *dbh && (*dbh)->pool) {
switch_core_destroy_memory_pool(&(*dbh)->pool);
*dbh = NULL;
}
}
static void add_handle(switch_cache_db_handle_t *dbh, const char *db_str, const char *db_callsite_str, const char *thread_str)
{
switch_ssize_t hlen = -1;
switch_mutex_lock(sql_manager.dbh_mutex);
switch_mutex_lock(dbh->mutex);
switch_set_string(dbh->creator, db_callsite_str);
switch_set_string(dbh->name, db_str);
dbh->hash = switch_ci_hashfunc_default(db_str, &hlen);
dbh->thread_hash = switch_ci_hashfunc_default(thread_str, &hlen);
dbh->use_count++;
dbh->total_used_count++;
dbh->next = sql_manager.handle_pool;
sql_manager.handle_pool = dbh;
sql_manager.total_handles++;
sql_manager.total_used_handles++;
switch_mutex_unlock(sql_manager.dbh_mutex);
}
static void del_handle(switch_cache_db_handle_t *dbh)
{
switch_cache_db_handle_t *dbh_ptr, *last = NULL;
switch_mutex_lock(sql_manager.dbh_mutex);
for (dbh_ptr = sql_manager.handle_pool; dbh_ptr; dbh_ptr = dbh_ptr->next) {
if (dbh_ptr == dbh) {
if (last) {
last->next = dbh_ptr->next;
} else {
sql_manager.handle_pool = dbh_ptr->next;
}
sql_manager.total_handles--;
break;
}
last = dbh_ptr;
}
switch_mutex_unlock(sql_manager.dbh_mutex);
}
SWITCH_DECLARE(void) switch_cache_db_database_interface_flush_handles(switch_database_interface_t *database_interface)
{
switch_cache_db_handle_t *dbh_ptr = NULL;
switch_mutex_lock(sql_manager.dbh_mutex);
top:
for (dbh_ptr = sql_manager.handle_pool; dbh_ptr; dbh_ptr = dbh_ptr->next) {
if (switch_mutex_trylock(dbh_ptr->mutex) == SWITCH_STATUS_SUCCESS) {
if (dbh_ptr->type != SCDB_TYPE_DATABASE_INTERFACE) {
switch_mutex_unlock(dbh_ptr->mutex);
continue;
}
if (dbh_ptr->native_handle.database_interface_dbh->connection_options.database_interface != database_interface) {
switch_mutex_unlock(dbh_ptr->mutex);
continue;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG10, "Dropping DB connection %s\n", dbh_ptr->name);
database_interface->handle_destroy(&dbh_ptr->native_handle.database_interface_dbh);
del_handle(dbh_ptr);
switch_mutex_unlock(dbh_ptr->mutex);
destroy_handle(&dbh_ptr);
goto top;
}
}
switch_mutex_unlock(sql_manager.dbh_mutex);
}
static switch_cache_db_handle_t *get_handle(const char *db_str, const char *user_str, const char *thread_str)
{
switch_ssize_t hlen = -1;
unsigned long hash = 0, thread_hash = 0;
switch_cache_db_handle_t *dbh_ptr, *r = NULL;
hash = switch_ci_hashfunc_default(db_str, &hlen);
thread_hash = switch_ci_hashfunc_default(thread_str, &hlen);
switch_mutex_lock(sql_manager.dbh_mutex);
/* First loop allows a thread to use a handle multiple times sumiltaneously
but only if that handle is in use by the same thread. In that case use_count will be incremented.
This allows SQLite to read and write within a single thread, giving the same handle for both operations.
*/
for (dbh_ptr = sql_manager.handle_pool; dbh_ptr; dbh_ptr = dbh_ptr->next) {
if (dbh_ptr->thread_hash == thread_hash && dbh_ptr->hash == hash &&
!switch_test_flag(dbh_ptr, CDF_PRUNE) && switch_mutex_trylock(dbh_ptr->mutex) == SWITCH_STATUS_SUCCESS) {
r = dbh_ptr;
break;
}
}
if (!r) {
/* If a handle idles, take it and associate with the thread.
If a handle is in use, skip and create new one.
*/
for (dbh_ptr = sql_manager.handle_pool; dbh_ptr; dbh_ptr = dbh_ptr->next) {
if (dbh_ptr->hash == hash && !dbh_ptr->use_count && !switch_test_flag(dbh_ptr, CDF_PRUNE) &&
switch_mutex_trylock(dbh_ptr->mutex) == SWITCH_STATUS_SUCCESS) {
r = dbh_ptr;
r->thread_hash = thread_hash;
break;
}
}
}
if (r) {
r->use_count++;
r->total_used_count++;
sql_manager.total_used_handles++;
switch_set_string(r->last_user, user_str);
}
switch_mutex_unlock(sql_manager.dbh_mutex);
return r;
}
/*!
\brief Open the default system database
*/
SWITCH_DECLARE(switch_status_t) _switch_core_db_handle(switch_cache_db_handle_t **dbh, const char *file, const char *func, int line)
{
switch_status_t r;
char *dsn;
if (!sql_manager.manage) {
return SWITCH_STATUS_FALSE;
}
if (!zstr(runtime.odbc_dsn)) {
dsn = runtime.odbc_dsn;
} else if (!zstr(runtime.dbname)) {
dsn = runtime.dbname;
} else {
dsn = "core";
}
if ((r = _switch_cache_db_get_db_handle_dsn_ex(dbh, dsn, SWITCH_TRUE, file, func, line)) != SWITCH_STATUS_SUCCESS) {
*dbh = NULL;
}
return r;
}
#define SQL_CACHE_TIMEOUT 30
#define SQL_REG_TIMEOUT 15
static void sql_close(time_t prune)
{
switch_cache_db_handle_t *dbh = NULL;
int locked = 0;
int sanity = 10000;
switch_mutex_lock(sql_manager.dbh_mutex);
top:
locked = 0;
for (dbh = sql_manager.handle_pool; dbh; dbh = dbh->next) {
time_t diff = 0;
if (prune > 0 && prune > dbh->last_used) {
diff = (time_t) prune - dbh->last_used;
}
if (prune > 0 && (dbh->use_count || switch_test_flag(dbh, CDF_NONEXPIRING) || (diff < SQL_CACHE_TIMEOUT && !switch_test_flag(dbh, CDF_PRUNE)))) {
continue;
}
if (switch_mutex_trylock(dbh->mutex) == SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG10, "Dropping idle DB connection %s\n", dbh->name);
switch (dbh->type) {
case SCDB_TYPE_DATABASE_INTERFACE:
{
switch_database_interface_t *database_interface = dbh->native_handle.database_interface_dbh->connection_options.database_interface;
database_interface->handle_destroy(&dbh->native_handle.database_interface_dbh);
}
break;
case SCDB_TYPE_ODBC:
{
switch_odbc_handle_destroy(&dbh->native_handle.odbc_dbh);
}
break;
case SCDB_TYPE_CORE_DB:
{
switch_core_db_close(dbh->native_handle.core_db_dbh->handle);
dbh->native_handle.core_db_dbh->handle = NULL;
}
break;
}
del_handle(dbh);
switch_mutex_unlock(dbh->mutex);
destroy_handle(&dbh);
goto top;
} else {
if (!prune) {
if (!sanity) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "SANITY CHECK FAILED! Handle %s (%s;%s) was not properly released.\n",
dbh->name, dbh->creator, dbh->last_user);
} else {
locked++;
}
}
continue;
}
}
if (locked) {
if (!prune) {
switch_cond_next();
if (sanity) sanity--;
}
goto top;
}
switch_mutex_unlock(sql_manager.dbh_mutex);
}
SWITCH_DECLARE(switch_cache_db_handle_type_t) switch_cache_db_get_type(switch_cache_db_handle_t *dbh)
{
return dbh->type;
}
SWITCH_DECLARE(void) switch_cache_db_flush_handles(void)
{
sql_close(switch_epoch_time_now(NULL) + SQL_CACHE_TIMEOUT + 1);
}
SWITCH_DECLARE(void) switch_cache_db_release_db_handle(switch_cache_db_handle_t **dbh)
{
if (dbh && *dbh) {
switch((*dbh)->type) {
case SCDB_TYPE_DATABASE_INTERFACE:
{
switch_database_interface_t *database_interface = (*dbh)->native_handle.database_interface_dbh->connection_options.database_interface;
database_interface->flush((*dbh)->native_handle.database_interface_dbh);
}
break;
default:
break;
}
(*dbh)->last_used = switch_epoch_time_now(NULL);
if ((*dbh)->use_count) {
--(*dbh)->use_count;
}
switch_mutex_unlock((*dbh)->mutex);
*dbh = NULL;
switch_mutex_lock(sql_manager.dbh_mutex);
sql_manager.total_used_handles--;
switch_mutex_unlock(sql_manager.dbh_mutex);
}
}
SWITCH_DECLARE(void) switch_cache_db_dismiss_db_handle(switch_cache_db_handle_t **dbh)
{
switch_cache_db_release_db_handle(dbh);
}
#ifndef MIN
#define MIN(a,b) (((a) < (b)) ? (a) : (b))
#endif
SWITCH_DECLARE(switch_status_t) switch_database_available(char* dsn)
{
switch_status_t status = SWITCH_STATUS_FALSE;
switch_database_interface_t *database_interface;
if (!dsn) {
status = SWITCH_STATUS_SUCCESS;
}
else {
char *colon_slashes = NULL;
if (NULL != (colon_slashes = strstr(dsn, "://")))
{
char prefix[16] = "";
strncpy(prefix, dsn, MIN(colon_slashes - dsn, 15));
if (!strncasecmp(prefix, "odbc", 4)) {
if (switch_odbc_available()) status = SWITCH_STATUS_SUCCESS;
}
else if (!strncasecmp(prefix, "sqlite", 6)) {
status = SWITCH_STATUS_SUCCESS;
}
else if ((database_interface = switch_loadable_module_get_database_interface(prefix, NULL))) {
status = SWITCH_STATUS_SUCCESS;
UNPROTECT_INTERFACE(database_interface);
}
}
else if (strchr(dsn + 2, ':')) {
status = SWITCH_STATUS_SUCCESS;
}
}
return status;
}
SWITCH_DECLARE(switch_status_t) switch_core_check_core_db_dsn(void)
{
return switch_database_available(runtime.odbc_dsn);
}
SWITCH_DECLARE(switch_status_t) _switch_cache_db_get_db_handle_dsn(switch_cache_db_handle_t **dbh, const char *dsn,
const char *file, const char *func, int line)
{
return _switch_cache_db_get_db_handle_dsn_ex(dbh, dsn, SWITCH_FALSE, file, func, line);
}
SWITCH_DECLARE(switch_status_t) _switch_cache_db_get_db_handle_dsn_ex(switch_cache_db_handle_t **dbh, const char *dsn, switch_bool_t make_module_no_unloadable,
const char *file, const char *func, int line)
{
switch_cache_db_connection_options_t connection_options = { {0} };
switch_cache_db_handle_type_t type = SCDB_TYPE_CORE_DB;
switch_database_interface_t *database_interface = NULL;
char tmp[256] = "";
char *p;
switch_status_t status = SWITCH_STATUS_FALSE;
int i;
char *colon_slashes = NULL;
if ( NULL != (colon_slashes = strstr(dsn, "://")) )
{
char prefix[16] = "";
strncpy(prefix, dsn, MIN(colon_slashes - dsn, 15));
if ((database_interface = switch_loadable_module_get_database_interface(prefix, NULL))) {
type = SCDB_TYPE_DATABASE_INTERFACE;
connection_options.database_interface_options.make_module_no_unloadable = make_module_no_unloadable;
connection_options.database_interface_options.database_interface = database_interface;
connection_options.database_interface_options.original_dsn = dsn;
connection_options.database_interface_options.connection_string = colon_slashes + 3;
strcpy(connection_options.database_interface_options.prefix, prefix);
UNPROTECT_INTERFACE(database_interface);
}
}
if (!connection_options.database_interface_options.connection_string)
{
if (!strncasecmp(dsn, "sqlite://", 9)) {
type = SCDB_TYPE_CORE_DB;
connection_options.core_db_options.db_path = (char *)(dsn + 9);
if (!strncasecmp(connection_options.core_db_options.db_path, "memory://", 9)) {
connection_options.core_db_options.in_memory = SWITCH_TRUE;
connection_options.core_db_options.db_path = (char *)(connection_options.core_db_options.db_path + 9);
}
}
else if ((!(i = strncasecmp(dsn, "odbc://", 7))) || (strchr(dsn + 2, ':') && !colon_slashes)) {
type = SCDB_TYPE_ODBC;
if (i) {
switch_set_string(tmp, dsn);
}
else {
switch_set_string(tmp, dsn + 7);
}
connection_options.odbc_options.dsn = tmp;
if ((p = strchr(tmp, ':'))) {
*p++ = '\0';
connection_options.odbc_options.user = p;
if ((p = strchr(connection_options.odbc_options.user, ':'))) {
*p++ = '\0';
connection_options.odbc_options.pass = p;
}
}
}
else {
type = SCDB_TYPE_CORE_DB;
connection_options.core_db_options.db_path = (char *)dsn;
}
}
status = _switch_cache_db_get_db_handle(dbh, type, &connection_options, file, func, line);
if (status != SWITCH_STATUS_SUCCESS) *dbh = NULL;
return status;
}
SWITCH_DECLARE(switch_status_t) _switch_cache_db_get_db_handle(switch_cache_db_handle_t **dbh,
switch_cache_db_handle_type_t type,
switch_cache_db_connection_options_t *connection_options,
const char *file, const char *func, int line)
{
switch_thread_id_t self = switch_thread_self();
char thread_str[CACHE_DB_LEN] = "";
char db_str[CACHE_DB_LEN] = "";
char db_callsite_str[CACHE_DB_LEN] = "";
switch_cache_db_handle_t *new_dbh = NULL;
int waiting = 0;
uint32_t yield_len = 100000, total_yield = 0;
const char *db_name = NULL;
const char *odbc_user = NULL;
const char *odbc_pass = NULL;
const char *db_type = NULL;
while(runtime.max_db_handles && sql_manager.total_handles >= runtime.max_db_handles && sql_manager.total_used_handles >= sql_manager.total_handles) {
if (!waiting++) {
switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_WARNING, "Max handles %u exceeded, blocking....\n",
runtime.max_db_handles);
}
switch_yield(yield_len);
total_yield += yield_len;
if (runtime.db_handle_timeout && total_yield > runtime.db_handle_timeout) {
switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_ERROR, "Error connecting\n");
*dbh = NULL;
return SWITCH_STATUS_FALSE;
}
}
switch (type) {
case SCDB_TYPE_DATABASE_INTERFACE:
{
db_name = connection_options->database_interface_options.connection_string;
odbc_user = NULL;
odbc_pass = NULL;
db_type = "database_interface";
}
break;
case SCDB_TYPE_ODBC:
{
db_name = connection_options->odbc_options.dsn;
odbc_user = connection_options->odbc_options.user;
odbc_pass = connection_options->odbc_options.pass;
db_type = "odbc";
}
break;
case SCDB_TYPE_CORE_DB:
{
db_name = connection_options->core_db_options.db_path;
odbc_user = NULL;
odbc_pass = NULL;
db_type = "core_db";
}
break;
}
if (!db_name) {
return SWITCH_STATUS_FALSE;
}
if (odbc_user || odbc_pass) {
snprintf(db_str, sizeof(db_str) - 1, "db=\"%s\";type=\"%s\"user=\"%s\";pass=\"%s\"", db_name, db_type, odbc_user, odbc_pass);
} else {
snprintf(db_str, sizeof(db_str) - 1, "db=\"%s\",type=\"%s\"", db_name, db_type);
}
snprintf(db_callsite_str, sizeof(db_callsite_str) - 1, "%s:%d", file, line);
snprintf(thread_str, sizeof(thread_str) - 1, "thread=\"%lu\"", (unsigned long) (intptr_t) self);
if ((new_dbh = get_handle(db_str, db_callsite_str, thread_str))) {
if (type == SCDB_TYPE_DATABASE_INTERFACE) {
switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_DEBUG10,
"Reuse Unused Cached DB handle %s [Database interface prefix: %s]\n", new_dbh->name, connection_options->database_interface_options.prefix);
} else {
switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_DEBUG10,
"Reuse Unused Cached DB handle %s [%s]\n", new_dbh->name, switch_cache_db_type_name(new_dbh->type));
}
} else {
switch_core_db_t *db = NULL;
switch_odbc_handle_t *odbc_dbh = NULL;
switch_database_interface_handle_t *database_interface_dbh = NULL;
switch (type) {
case SCDB_TYPE_DATABASE_INTERFACE:
{
switch_database_interface_t *database_interface = connection_options->database_interface_options.database_interface;
if (SWITCH_STATUS_SUCCESS != database_interface->handle_new(connection_options->database_interface_options, &database_interface_dbh)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Failure! Can't create new handle! Can't connect to DSN %s\n", connection_options->database_interface_options.original_dsn);
goto end;
}
if (database_interface_dbh) {
database_interface_dbh->connection_options = connection_options->database_interface_options;
if (connection_options->database_interface_options.make_module_no_unloadable == SWITCH_TRUE)
{
PROTECT_INTERFACE(database_interface)
switch_loadable_module_protect(database_interface->parent->module_name);
UNPROTECT_INTERFACE(database_interface)
}
}
}
break;
case SCDB_TYPE_ODBC:
{
if (!switch_odbc_available()) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Failure! ODBC NOT AVAILABLE! Can't connect to DSN %s\n", connection_options->odbc_options.dsn);
goto end;
}
if ((odbc_dbh = switch_odbc_handle_new(connection_options->odbc_options.dsn,
connection_options->odbc_options.user, connection_options->odbc_options.pass))) {
if (switch_odbc_handle_connect(odbc_dbh) != SWITCH_ODBC_SUCCESS) {
switch_odbc_handle_destroy(&odbc_dbh);
}
}
}
break;
case SCDB_TYPE_CORE_DB:
{
if (!connection_options->core_db_options.in_memory) {
db = switch_core_db_open_file(connection_options->core_db_options.db_path);
} else {
db = switch_core_db_open_in_memory(connection_options->core_db_options.db_path);
}
}
break;
default:
goto end;
}
if (!db && !odbc_dbh && !database_interface_dbh) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Failure to connect to %s %s!\n", switch_cache_db_type_name(type), db_name);
goto end;
}
new_dbh = create_handle(type);
switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_DEBUG10,
"Create Cached DB handle %s [%s] %s:%d\n", new_dbh->name, switch_cache_db_type_name(type), file, line);
if (database_interface_dbh) {
new_dbh->native_handle.database_interface_dbh = database_interface_dbh;
} else if (db) {
if (!(new_dbh->native_handle.core_db_dbh = switch_core_alloc(new_dbh->pool, sizeof(*new_dbh->native_handle.core_db_dbh)))) {
destroy_handle(&new_dbh);
switch_core_db_close(db);
goto end;
}
new_dbh->native_handle.core_db_dbh->handle = db;
new_dbh->native_handle.core_db_dbh->in_memory = connection_options->core_db_options.in_memory;
} else if (odbc_dbh) {
new_dbh->native_handle.odbc_dbh = odbc_dbh;
}
add_handle(new_dbh, db_str, db_callsite_str, thread_str);
}
end:
if (new_dbh) {
new_dbh->last_used = switch_epoch_time_now(NULL);
}
*dbh = new_dbh;
return *dbh ? SWITCH_STATUS_SUCCESS : SWITCH_STATUS_FALSE;
}
static switch_status_t switch_cache_db_execute_sql_real(switch_cache_db_handle_t *dbh, const char *sql, char **err)
{
switch_status_t status = SWITCH_STATUS_FALSE;
char *errmsg = NULL;
char *tmp = NULL;
char *type = NULL;
if (err) {
*err = NULL;
}
switch (dbh->type) {
case SCDB_TYPE_DATABASE_INTERFACE:
{
switch_database_interface_t *database_interface = dbh->native_handle.database_interface_dbh->connection_options.database_interface;
type = (char *)dbh->native_handle.database_interface_dbh->connection_options.prefix;
status = database_interface_handle_exec(database_interface, dbh->native_handle.database_interface_dbh, sql, &errmsg);
}
break;
case SCDB_TYPE_ODBC:
{
type = "ODBC";
status = switch_odbc_handle_exec(dbh->native_handle.odbc_dbh, sql, NULL, &errmsg) == SWITCH_ODBC_SUCCESS ? SWITCH_STATUS_SUCCESS : SWITCH_STATUS_FALSE;
}
break;
case SCDB_TYPE_CORE_DB:
{
int ret = switch_core_db_exec(dbh->native_handle.core_db_dbh->handle, sql, NULL, NULL, &errmsg);
type = "NATIVE";
if (ret == SWITCH_CORE_DB_OK) {
status = SWITCH_STATUS_SUCCESS;
}
if (errmsg) {
switch_strdup(tmp, errmsg);
switch_core_db_free(errmsg);
errmsg = tmp;
}
}
break;
}
if (errmsg) {
if (!switch_stristr("already exists", errmsg) && !switch_stristr("duplicate key name", errmsg)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "[%s] %s SQL ERR [%s]\n%s\n", dbh->name, (type ? type : "Unknown"), errmsg, sql);
}
if (err) {
*err = errmsg;
} else {
switch_safe_free(errmsg);
}
}
return status;
}
/**
OMFG you cruel bastards. Who chooses 64k as a max buffer len for a sql statement, have you ever heard of transactions?
**/
static switch_status_t switch_cache_db_execute_sql_chunked(switch_cache_db_handle_t *dbh, char *sql, uint32_t chunk_size, char **err)
{
switch_status_t status = SWITCH_STATUS_FALSE;
char *p, *s, *e;
switch_size_t len;
switch_assert(chunk_size);
if (err)
*err = NULL;
len = strlen(sql);
if (chunk_size > len) {
return switch_cache_db_execute_sql_real(dbh, sql, err);
}
if (!(strlen(sql) / chunk_size)) {
return SWITCH_STATUS_FALSE;
}
e = end_of_p(sql);
s = sql;
while (s && s < e) {
p = s + chunk_size;
if (p > e) {
p = e;
}
while (p > s) {
if (*p == '\n' && *(p - 1) == ';') {
*p = '\0';
*(p - 1) = '\0';
p++;
break;
}
p--;
}
status = switch_cache_db_execute_sql_real(dbh, s, err);
if (p <= s || status != SWITCH_STATUS_SUCCESS || (err && *err)) {
break;
}
s = p;
}
return status;
}
SWITCH_DECLARE(switch_status_t) switch_cache_db_execute_sql(switch_cache_db_handle_t *dbh, char *sql, char **err)
{
switch_status_t status = SWITCH_STATUS_FALSE;
switch (dbh->type) {
default:
{
status = switch_cache_db_execute_sql_chunked(dbh, (char *) sql, 32768, err);
}
break;
}
return status;
}
SWITCH_DECLARE(int) switch_cache_db_affected_rows(switch_cache_db_handle_t *dbh)
{
switch (dbh->type) {
case SCDB_TYPE_CORE_DB:
{
return switch_core_db_changes(dbh->native_handle.core_db_dbh->handle);
}
break;
case SCDB_TYPE_ODBC:
{
return switch_odbc_handle_affected_rows(dbh->native_handle.odbc_dbh);
}
break;
case SCDB_TYPE_DATABASE_INTERFACE:
{
switch_database_interface_t *database_interface = dbh->native_handle.database_interface_dbh->connection_options.database_interface;
int affected_rows = 0;
database_interface->affected_rows(dbh->native_handle.database_interface_dbh, &affected_rows);
return affected_rows;
}
break;
}
return 0;
}
SWITCH_DECLARE(int) switch_cache_db_load_extension(switch_cache_db_handle_t *dbh, const char *extension)
{
switch (dbh->type) {
case SCDB_TYPE_CORE_DB:
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "try to load extension [%s]!\n", extension);
return switch_core_db_load_extension(dbh->native_handle.core_db_dbh->handle, extension);
}
break;
case SCDB_TYPE_ODBC:
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "load extension not supported by type ODBC!\n");
}
break;
case SCDB_TYPE_DATABASE_INTERFACE:
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "load extension not supported by type DATABASE_INTERFACE!\n");
}
break;
}
return 0;
}
SWITCH_DECLARE(char *) switch_cache_db_execute_sql2str(switch_cache_db_handle_t *dbh, char *sql, char *str, size_t len, char **err)
{
switch_status_t status = SWITCH_STATUS_FALSE;
memset(str, 0, len);
switch (dbh->type) {
case SCDB_TYPE_CORE_DB:
{
switch_core_db_stmt_t *stmt;
if (switch_core_db_prepare(dbh->native_handle.core_db_dbh->handle, sql, -1, &stmt, 0)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Statement Error [%s]!\n", sql);
goto end;
} else {
int running = 1;
while (running < 5000) {
int result = switch_core_db_step(stmt);
const unsigned char *txt;
if (result == SWITCH_CORE_DB_ROW) {
if (switch_core_db_column_count(stmt) > 0) {
if ((txt = switch_core_db_column_text(stmt, 0))) {
switch_copy_string(str, (char *) txt, len);
status = SWITCH_STATUS_SUCCESS;
}
}
break;
} else if (result == SWITCH_CORE_DB_BUSY) {
running++;
switch_cond_next();
continue;
}
break;
}
switch_core_db_finalize(stmt);
}
}
break;
case SCDB_TYPE_ODBC:
{
status = switch_odbc_handle_exec_string(dbh->native_handle.odbc_dbh, sql, str, len, err) == SWITCH_ODBC_SUCCESS ? SWITCH_STATUS_SUCCESS : SWITCH_STATUS_FALSE;
}
break;
case SCDB_TYPE_DATABASE_INTERFACE:
{
switch_database_interface_t *database_interface = dbh->native_handle.database_interface_dbh->connection_options.database_interface;
status = database_interface->exec_string(dbh->native_handle.database_interface_dbh, sql, str, len, err);
}
break;
}
end:
return status == SWITCH_STATUS_SUCCESS ? str : NULL;
}
SWITCH_DECLARE(switch_status_t) switch_cache_db_persistant_execute(switch_cache_db_handle_t *dbh, const char *sql, uint32_t retries)
{
char *errmsg = NULL;
switch_status_t status = SWITCH_STATUS_FALSE;
uint8_t forever = 0;
if (!retries) {
forever = 1;
retries = 1000;
}
while (retries > 0) {
switch_cache_db_execute_sql_real(dbh, sql, &errmsg);
if (errmsg) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "SQL ERR [%s]\n", errmsg);
switch_safe_free(errmsg);
switch_yield(100000);
retries--;
if (retries == 0 && forever) {
retries = 1000;
continue;
}
} else {
status = SWITCH_STATUS_SUCCESS;
break;
}
}
return status;
}
SWITCH_DECLARE(switch_status_t) switch_cache_db_persistant_execute_trans_full(switch_cache_db_handle_t *dbh,
char *sql, uint32_t retries,
const char *pre_trans_execute,
const char *post_trans_execute,
const char *inner_pre_trans_execute,
const char *inner_post_trans_execute)
{
char *errmsg = NULL;
switch_status_t status = SWITCH_STATUS_FALSE;
uint8_t forever = 0;
unsigned begin_retries = 100;
uint8_t again = 0;
if (!retries) {
forever = 1;
retries = 1000;
}
if (!zstr(pre_trans_execute)) {
switch_cache_db_execute_sql_real(dbh, pre_trans_execute, &errmsg);
if (errmsg) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "SQL PRE TRANS EXEC %s [%s]\n", pre_trans_execute, errmsg);
switch_safe_free(errmsg);
}
}
again:
while (begin_retries > 0) {
again = 0;
switch(dbh->type) {
case SCDB_TYPE_CORE_DB:
{
switch_cache_db_execute_sql_real(dbh, "BEGIN EXCLUSIVE", &errmsg);
}
break;
case SCDB_TYPE_ODBC:
{
switch_odbc_status_t result;
if ((result = switch_odbc_SQLSetAutoCommitAttr(dbh->native_handle.odbc_dbh, 0)) != SWITCH_ODBC_SUCCESS) {
char tmp[100];