--- parser3/src/main/pa_sql_driver_manager.C 2003/12/11 09:22:09 1.78 +++ parser3/src/main/pa_sql_driver_manager.C 2020/12/10 23:21:09 1.99 @@ -1,12 +1,10 @@ /** @file Parser: sql driver manager implementation. - Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com) + Copyright (c) 2001-2017 Art. Lebedev Studio (http://www.artlebedev.com) Author: Alexandr Petrosian (http://paf.design.ru) */ -static const char * const IDENT_SQL_DRIVER_MANAGER_C="$Date: 2003/12/11 09:22:09 $"; - #include "pa_sql_driver_manager.h" #include "ltdl.h" #include "pa_threads.h" @@ -15,6 +13,9 @@ static const char * const IDENT_SQL_DRIV #include "pa_common.h" #include "pa_vhash.h" #include "pa_vtable.h" +#include "pa_charsets.h" + +volatile const char * IDENT_PA_SQL_DRIVER_MANAGER_C="$Id: pa_sql_driver_manager.C,v 1.99 2020/12/10 23:21:09 moko Exp $" IDENT_PA_SQL_DRIVER_MANAGER_H IDENT_PA_SQL_CONNECTION_H; // globals @@ -31,47 +32,82 @@ const String& SQL_Driver_services_impl:: String& result=*new String; result << furl->mid(0, furl->pos(':')) << "://****"; - size_t at_pos=furl->pos('@'); - if(at_pos!=STRING_NOT_FOUND) + size_t at_pos=0; + size_t new_at_pos; + while( (new_at_pos=furl->pos('@', at_pos+1))!=STRING_NOT_FOUND) + at_pos=new_at_pos; + if(at_pos) result << furl->mid(at_pos, furl->length()); return result; } +void SQL_Driver_services_impl::transcode(const char* src, size_t src_length, + const char*& dst, size_t& dst_length, + const char* charset_from_name, + const char* charset_to_name + ) +{ + try { + // to speed up sql transcode [lots of charsets::get-s -- twice for each cell] + // without complicating sql driver API + // we need to cache couple of name->charset pairs + // assuming pointers to names are are NOT to local vars + + struct cache_record { + const char* name; + Charset* object; + } cache[2]={{0,0}, {0,0}}; + + Charset* charset_from_object; + Charset* charset_to_object; + if(charset_from_name==cache[0].name) { + charset_from_object=cache[0].object; + } else { + cache[0].name=charset_from_name; + cache[0].object=charset_from_object=&pa_charsets.get_direct(charset_from_name); + } + if(charset_to_name==cache[1].name) { + charset_to_object=cache[1].object; + } else { + cache[1].name=charset_to_name; + cache[1].object=charset_to_object=&pa_charsets.get_direct(charset_to_name); + } + + String::C result=Charset::transcode(String::C(src, src_length), *charset_from_object, *charset_to_object); + dst=result.str; + dst_length=result.length; + } catch(const Exception& e) { + _throw(SQL_Error(e.type(), e.comment())); + } catch(...) { + _throw(SQL_Error("unknown error while transcoding in sql driver")); + } +} + // helpers static void expire_connection(SQL_Connection& connection, time_t older_dies) { if(connection.connected() && connection.expired(older_dies)) connection.disconnect(); } -static void expire_connections(SQL_Driver_manager::connection_cache_type::key_type /*key*/, - SQL_Driver_manager::connection_cache_type::value_type stack, - time_t older_dies) { +static void expire_connections(SQL_Driver_manager::connection_cache_type::key_type /*key*/, SQL_Driver_manager::connection_cache_type::value_type stack, time_t older_dies) { for(size_t i=0; itop_index(); i++) expire_connection(*stack->get(i), older_dies); } // SQL_Driver_manager -SQL_Driver_manager::SQL_Driver_manager(): - is_dlinited(false), prev_expiration_pass_time(0) { -} +SQL_Driver_manager::SQL_Driver_manager(): prev_expiration_pass_time(0) {} SQL_Driver_manager::~SQL_Driver_manager() { - connection_cache.for_each(expire_connections, time(0)+(time_t)1/*=in future=expire all*/); - - if(is_dlinited) - lt_dlexit(); + connection_cache.for_each(expire_connections, time(0)+(time_t)10/*=in future=expire all*/); } /// @param aurl protocol://[driver-dependent] -SQL_Connection* SQL_Driver_manager::get_connection(const String& aurl, - Table *protocol2driver_and_client) { +SQL_Connection* SQL_Driver_manager::get_connection(const String& aurl, Table *protocol2driver_and_client, const char* arequest_charset, const char* adocument_root) { // we have table for locating protocol's library if(!protocol2driver_and_client) - throw Exception("parser.runtime", - &aurl, - "$"MAIN_SQL_NAME":"MAIN_SQL_DRIVERS_NAME" table must be defined"); + throw Exception(PARSER_RUNTIME, &aurl, "$" MAIN_SQL_NAME ":" MAIN_SQL_DRIVERS_NAME " table must be defined"); // first trying to get cached connection SQL_Connection* connection=get_connection_from_cache(aurl); @@ -89,9 +125,7 @@ SQL_Connection* SQL_Driver_manager::get_ else { // no cached connection or it were unpingabe: connect/reconnect url_cstr=aurl.cstrm(); if(!strstr(url_cstr, "://")) - throw Exception("parser.runtime", - aurl.length()?&aurl:0, - "connection string must start with protocol://"); + throw Exception(PARSER_RUNTIME, aurl.length()?&aurl:0, "connection string must start with protocol://"); char *protocol_cstr=lsplit(&url_cstr, ':'); @@ -109,39 +143,24 @@ SQL_Connection* SQL_Driver_manager::get_ Table::Action_options options; if(protocol2driver_and_client->locate(0, protocol, options)) { if(!(library=protocol2driver_and_client->item(1)) || library->length()==0) - throw Exception("parser.runtime", - 0, - "driver library column for protocol '%s' is empty", - protocol_cstr); + throw Exception(PARSER_RUNTIME, 0, "driver library column for protocol '%s' is empty", protocol_cstr); dlopen_file_spec=protocol2driver_and_client->item(2); } else - throw Exception("parser.runtime", - &aurl, - "undefined protocol '%s'", - protocol_cstr); - - if(!is_dlinited) { - if(lt_dlinit()) - throw Exception(0, - library, - "prepare to dynamic loading failed, %s", lt_dlerror()); + throw Exception(PARSER_RUNTIME, &aurl, "undefined protocol '%s'", protocol_cstr); - is_dlinited=true; - } + pa_dlinit(); - const char* filename=library->cstr(String::L_FILE_SPEC); + const char* filename=library->taint_cstr(String::L_FILE_SPEC); lt_dlhandle handle=lt_dlopen(filename); - if (!handle) - throw Exception(0, - library, - "can not open the module, %s", lt_dlerror()); + if (!handle) { + const char* error=lt_dlerror(); + throw Exception(0, library, error ? error : "can not open the module"); + } - SQL_Driver_create_func create=(SQL_Driver_create_func)lt_dlsym(handle, - SQL_DRIVER_CREATE_NAME); + SQL_Driver_create_func create=(SQL_Driver_create_func)(lt_dlsym(handle, + SQL_DRIVER_CREATE_NAME)); if(!create) - throw Exception(0, - library, - "function '"SQL_DRIVER_CREATE_NAME"' was not found"); + throw Exception(0, library, "function '" SQL_DRIVER_CREATE_NAME "' was not found"); // create library-driver! driver=(*create)(); @@ -149,27 +168,20 @@ SQL_Connection* SQL_Driver_manager::get_ // validate driver api version int driver_api_version=driver->api_version(); if(driver_api_version!=SQL_DRIVER_API_VERSION) - throw Exception(0, - library, - "driver implements API version 0x%04X not equal to 0x%04X", - driver_api_version, SQL_DRIVER_API_VERSION); + throw Exception(0, library, "driver implements API version 0x%04X not equal to 0x%04X", driver_api_version, SQL_DRIVER_API_VERSION); // initialise by connecting to sql client dynamic link library char* dlopen_file_spec_cstr= dlopen_file_spec && dlopen_file_spec->length()? - dlopen_file_spec->cstrm(String::L_AS_IS):0; + dlopen_file_spec->taint_cstrm(String::L_AS_IS):0; if(const char* error=driver->initialize(dlopen_file_spec_cstr)) - throw Exception(0, - library, - "driver failed to initialize client library '%s', %s", - dlopen_file_spec_cstr?dlopen_file_spec_cstr:"unspecifed", - error); + throw Exception(0, library, "driver failed to initialize client library '%s', %s", dlopen_file_spec_cstr ? dlopen_file_spec_cstr : "unspecifed", error); // cache it put_driver_to_cache(protocol, driver); } - connection=new SQL_Connection(aurl, *driver); + connection=new SQL_Connection(aurl, *driver, arequest_charset, adocument_root); // associate with pool[request] (deassociates at close) connection->set_url(); } @@ -181,8 +193,7 @@ SQL_Connection* SQL_Driver_manager::get_ return connection; } -void SQL_Driver_manager::close_connection(connection_cache_type::key_type url, - SQL_Connection* connection) { +void SQL_Driver_manager::close_connection(connection_cache_type::key_type url, SQL_Connection* connection) { put_connection_to_cache(url, connection); } @@ -195,9 +206,7 @@ SQL_Driver *SQL_Driver_manager::get_driv return driver_cache.get(protocol); } -void SQL_Driver_manager::put_driver_to_cache( - driver_cache_type::key_type protocol, - driver_cache_type::value_type driver) { +void SQL_Driver_manager::put_driver_to_cache(driver_cache_type::key_type protocol, driver_cache_type::value_type driver) { SYNCHRONIZED; driver_cache.put(protocol, driver); @@ -205,7 +214,7 @@ void SQL_Driver_manager::put_driver_to_c // connection cache /// @todo get rid of memory spending Stack [zeros deep inside got accumulated] -SQL_Connection* SQL_Driver_manager::get_connection_from_cache(connection_cache_type::key_type url) { +SQL_Connection* SQL_Driver_manager::get_connection_from_cache(connection_cache_type::key_type url) { SYNCHRONIZED; if(connection_cache_type::value_type connections=connection_cache.get(url)) @@ -218,9 +227,7 @@ SQL_Connection* SQL_Driver_manager::get_ return 0; } -void SQL_Driver_manager::put_connection_to_cache( - connection_cache_type::key_type url, - SQL_Connection* connection) { +void SQL_Driver_manager::put_connection_to_cache(connection_cache_type::key_type url, SQL_Connection* connection) { SYNCHRONIZED; connection_cache_type::value_type connections=connection_cache.get(url); @@ -235,7 +242,7 @@ void SQL_Driver_manager::maybe_expire_ca time_t now=time(0); if(prev_expiration_pass_time(expire_connections, time_t(now-EXPIRE_UNUSED_CONNECTION_SECONDS)); prev_expiration_pass_time=now; } @@ -254,10 +261,7 @@ static void add_connection_to_status_cac *table+=&row; } } -static void add_connections_to_status_cache_table( - SQL_Driver_manager::connection_cache_type::key_type /*key*/, - SQL_Driver_manager::connection_cache_type::value_type stack, Table* table) -{ +static void add_connections_to_status_cache_table(SQL_Driver_manager::connection_cache_type::key_type /*key*/, SQL_Driver_manager::connection_cache_type::value_type stack, Table* table) { for(Array_iterator i(*stack); i.has_next(); ) add_connection_to_status_cache_table(*i.next(), table); } @@ -272,7 +276,7 @@ Value* SQL_Driver_manager::get_status() columns+=new String("time"); Table& table=*new Table(&columns, connection_cache.count()); - connection_cache.for_each(add_connections_to_status_cache_table, &table); + connection_cache.for_each(add_connections_to_status_cache_table, &table); result->get_hash()->put(*new String("cache"), new VTable(&table)); }