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| version 1.93, 2015/04/02 22:18:26 | version 1.106, 2026/04/25 13:38:46 |
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| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: sql driver manager implementation. | Parser: sql driver manager implementation. |
| Copyright (c) 2001-2012 Art. Lebedev Studio (http://www.artlebedev.com) | Copyright (c) 2001-2026 Art. Lebedev Studio (https://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | Authors: Konstantin Morshnev <moko@design.ru>, Alexandr Petrosian <paf@design.ru> |
| */ | */ |
| #include "pa_sql_driver_manager.h" | #include "pa_sql_driver_manager.h" |
| Line 23 SQL_Driver_manager* SQL_driver_manager=0 | Line 23 SQL_Driver_manager* SQL_driver_manager=0 |
| // consts | // consts |
| const time_t EXPIRE_UNUSED_CONNECTION_SECONDS=60; | const time_t EXPIRE_UNUSED_CONNECTION_SECONDS=10; |
| const time_t CHECK_EXPIRED_CONNECTIONS_SECONDS=EXPIRE_UNUSED_CONNECTION_SECONDS*2; | const time_t CHECK_EXPIRED_CONNECTIONS_SECONDS=EXPIRE_UNUSED_CONNECTION_SECONDS*2; |
| // helpers | // helpers |
| Line 65 void SQL_Driver_services_impl::transcode | Line 65 void SQL_Driver_services_impl::transcode |
| charset_from_object=cache[0].object; | charset_from_object=cache[0].object; |
| } else { | } else { |
| cache[0].name=charset_from_name; | cache[0].name=charset_from_name; |
| cache[0].object=charset_from_object=&charsets.get(charset_from_name); | cache[0].object=charset_from_object=&pa_charsets.get_direct(charset_from_name); |
| } | } |
| if(charset_to_name==cache[1].name) { | if(charset_to_name==cache[1].name) { |
| charset_to_object=cache[1].object; | charset_to_object=cache[1].object; |
| } else { | } else { |
| cache[1].name=charset_to_name; | cache[1].name=charset_to_name; |
| cache[1].object=charset_to_object=&charsets.get(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), | String::C result=Charset::transcode(String::C(src, src_length), *charset_from_object, *charset_to_object); |
| *charset_from_object, | |
| *charset_to_object); | |
| dst=result.str; | dst=result.str; |
| dst_length=result.length; | dst_length=result.length; |
| } catch(const Exception& e) { | } catch(const Exception& e) { |
| _throw(SQL_Error(e.type(), e.comment())); | _throw(SQL_Error(e.type(), e.comment())); |
| } catch(...) { | } catch(...) { |
| _throw(SQL_Error(0, "unknown error while transcoding in sql driver")); | _throw(SQL_Error("unknown error while transcoding in sql driver")); |
| } | } |
| } | } |
| Line 92 static void expire_connection(SQL_Connec | Line 90 static void expire_connection(SQL_Connec |
| if(connection.connected() && connection.expired(older_dies)) | if(connection.connected() && connection.expired(older_dies)) |
| connection.disconnect(); | connection.disconnect(); |
| } | } |
| static void expire_connections(SQL_Driver_manager::connection_cache_type::key_type /*key*/, | 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) { |
| SQL_Driver_manager::connection_cache_type::value_type stack, | |
| time_t older_dies) { | |
| for(size_t i=0; i<stack->top_index(); i++) | for(size_t i=0; i<stack->top_index(); i++) |
| expire_connection(*stack->get(i), older_dies); | expire_connection(*stack->get(i), older_dies); |
| } | } |
| Line 108 SQL_Driver_manager::~SQL_Driver_manager( | Line 104 SQL_Driver_manager::~SQL_Driver_manager( |
| } | } |
| /// @param aurl protocol://[driver-dependent] | /// @param aurl protocol://[driver-dependent] |
| SQL_Connection* SQL_Driver_manager::get_connection(const String& aurl, | SQL_Connection* SQL_Driver_manager::get_connection(const String& aurl, Table *protocol2driver_and_client, const char* arequest_charset, const char* adocument_root) { |
| Table *protocol2driver_and_client, | |
| const char* arequest_charset, | |
| const char* adocument_root) { | |
| // we have table for locating protocol's library | // we have table for locating protocol's library |
| if(!protocol2driver_and_client) | if(!protocol2driver_and_client) |
| throw Exception(PARSER_RUNTIME, | throw Exception(PARSER_RUNTIME, &aurl, "$" MAIN_SQL_NAME ":" MAIN_SQL_DRIVERS_NAME " table must be defined"); |
| &aurl, | |
| "$" MAIN_SQL_NAME ":" MAIN_SQL_DRIVERS_NAME " table must be defined"); | |
| // first trying to get cached connection | // first trying to get cached connection |
| SQL_Connection* connection=get_connection_from_cache(aurl); | SQL_Connection* connection=get_connection_from_cache(aurl); |
| Line 134 SQL_Connection* SQL_Driver_manager::get_ | Line 125 SQL_Connection* SQL_Driver_manager::get_ |
| else { // no cached connection or it were unpingabe: connect/reconnect | else { // no cached connection or it were unpingabe: connect/reconnect |
| url_cstr=aurl.cstrm(); | url_cstr=aurl.cstrm(); |
| if(!strstr(url_cstr, "://")) | if(!strstr(url_cstr, "://")) |
| throw Exception(PARSER_RUNTIME, | throw Exception(PARSER_RUNTIME, aurl.length()?&aurl:0, "connection string must start with protocol://"); |
| aurl.length()?&aurl:0, | |
| "connection string must start with protocol://"); | |
| char *protocol_cstr=lsplit(&url_cstr, ':'); | char *protocol_cstr=lsplit(&url_cstr, ':'); |
| Line 154 SQL_Connection* SQL_Driver_manager::get_ | Line 143 SQL_Connection* SQL_Driver_manager::get_ |
| Table::Action_options options; | Table::Action_options options; |
| if(protocol2driver_and_client->locate(0, protocol, options)) { | if(protocol2driver_and_client->locate(0, protocol, options)) { |
| if(!(library=protocol2driver_and_client->item(1)) || library->length()==0) | if(!(library=protocol2driver_and_client->item(1)) || library->length()==0) |
| throw Exception(PARSER_RUNTIME, | throw Exception(PARSER_RUNTIME, 0, "driver library column for protocol '%s' is empty", protocol_cstr); |
| 0, | |
| "driver library column for protocol '%s' is empty", | |
| protocol_cstr); | |
| dlopen_file_spec=protocol2driver_and_client->item(2); | dlopen_file_spec=protocol2driver_and_client->item(2); |
| } else | } else |
| throw Exception(PARSER_RUNTIME, | throw Exception(PARSER_RUNTIME, &aurl, "undefined protocol '%s'", protocol_cstr); |
| &aurl, | |
| "undefined protocol '%s'", | |
| protocol_cstr); | |
| pa_dlinit(); | pa_dlinit(); |
| Line 171 SQL_Connection* SQL_Driver_manager::get_ | Line 154 SQL_Connection* SQL_Driver_manager::get_ |
| lt_dlhandle handle=lt_dlopen(filename); | lt_dlhandle handle=lt_dlopen(filename); |
| if (!handle) { | if (!handle) { |
| const char* error=lt_dlerror(); | const char* error=lt_dlerror(); |
| throw Exception(0, | throw Exception(0, library, error ? error : "cannot open the module"); |
| library, | |
| error?error:"can not open the module"); | |
| } | } |
| SQL_Driver_create_func create=(SQL_Driver_create_func)(lt_dlsym(handle, | SQL_Driver_create_func create=(SQL_Driver_create_func)(lt_dlsym(handle, |
| SQL_DRIVER_CREATE_NAME)); | SQL_DRIVER_CREATE_NAME)); |
| if(!create) | if(!create) |
| throw Exception(0, | throw Exception(0, library, "function '" SQL_DRIVER_CREATE_NAME "' was not found"); |
| library, | |
| "function '" SQL_DRIVER_CREATE_NAME "' was not found"); | |
| // create library-driver! | // create library-driver! |
| driver=(*create)(); | driver=(*create)(); |
| Line 189 SQL_Connection* SQL_Driver_manager::get_ | Line 168 SQL_Connection* SQL_Driver_manager::get_ |
| // validate driver api version | // validate driver api version |
| int driver_api_version=driver->api_version(); | int driver_api_version=driver->api_version(); |
| if(driver_api_version!=SQL_DRIVER_API_VERSION) | if(driver_api_version!=SQL_DRIVER_API_VERSION) |
| throw Exception(0, | throw Exception(0, library, "driver implements API version 0x%04X not equal to 0x%04X", driver_api_version, SQL_DRIVER_API_VERSION); |
| 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 | // initialise by connecting to sql client dynamic link library |
| char* dlopen_file_spec_cstr= | char* dlopen_file_spec_cstr= |
| dlopen_file_spec && dlopen_file_spec->length()? | dlopen_file_spec && dlopen_file_spec->length()? |
| dlopen_file_spec->taint_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)) | if(const char* error=driver->initialize(dlopen_file_spec_cstr)) |
| throw Exception(0, | throw Exception(0, library, "driver failed to initialize client library '%s', %s", dlopen_file_spec_cstr ? dlopen_file_spec_cstr : "unspecifed", error); |
| library, | |
| "driver failed to initialize client library '%s', %s", | |
| dlopen_file_spec_cstr?dlopen_file_spec_cstr:"unspecifed", | |
| error); | |
| // cache it | // cache it |
| put_driver_to_cache(protocol, driver); | put_driver_to_cache(protocol, driver); |
| Line 221 SQL_Connection* SQL_Driver_manager::get_ | Line 193 SQL_Connection* SQL_Driver_manager::get_ |
| return connection; | return connection; |
| } | } |
| void SQL_Driver_manager::close_connection(connection_cache_type::key_type url, | void SQL_Driver_manager::close_connection(connection_cache_type::key_type url, SQL_Connection* connection) { |
| SQL_Connection* connection) { | |
| put_connection_to_cache(url, connection); | put_connection_to_cache(url, connection); |
| } | } |
| Line 235 SQL_Driver *SQL_Driver_manager::get_driv | Line 206 SQL_Driver *SQL_Driver_manager::get_driv |
| return driver_cache.get(protocol); | return driver_cache.get(protocol); |
| } | } |
| void SQL_Driver_manager::put_driver_to_cache( | void SQL_Driver_manager::put_driver_to_cache(driver_cache_type::key_type protocol, driver_cache_type::value_type driver) { |
| driver_cache_type::key_type protocol, | |
| driver_cache_type::value_type driver) { | |
| SYNCHRONIZED; | SYNCHRONIZED; |
| driver_cache.put(protocol, driver); | driver_cache.put(protocol, driver); |
| Line 245 void SQL_Driver_manager::put_driver_to_c | Line 214 void SQL_Driver_manager::put_driver_to_c |
| // connection cache | // connection cache |
| /// @todo get rid of memory spending Stack [zeros deep inside got accumulated] | /// @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; | SYNCHRONIZED; |
| if(connection_cache_type::value_type connections=connection_cache.get(url)) | if(connection_cache_type::value_type connections=connection_cache.get(url)) |
| Line 258 SQL_Connection* SQL_Driver_manager::get_ | Line 227 SQL_Connection* SQL_Driver_manager::get_ |
| return 0; | return 0; |
| } | } |
| void SQL_Driver_manager::put_connection_to_cache( | void SQL_Driver_manager::put_connection_to_cache(connection_cache_type::key_type url, SQL_Connection* connection) { |
| connection_cache_type::key_type url, | |
| SQL_Connection* connection) { | |
| SYNCHRONIZED; | SYNCHRONIZED; |
| connection_cache_type::value_type connections=connection_cache.get(url); | connection_cache_type::value_type connections=connection_cache.get(url); |
| Line 294 static void add_connection_to_status_cac | Line 261 static void add_connection_to_status_cac |
| *table+=&row; | *table+=&row; |
| } | } |
| } | } |
| static void add_connections_to_status_cache_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) { |
| SQL_Driver_manager::connection_cache_type::key_type /*key*/, | for(Array_iterator<SQL_Connection*> i(*stack); i; ) |
| SQL_Driver_manager::connection_cache_type::value_type stack, Table* table) | |
| { | |
| for(Array_iterator<SQL_Connection*> i(*stack); i.has_next(); ) | |
| add_connection_to_status_cache_table(*i.next(), table); | add_connection_to_status_cache_table(*i.next(), table); |
| } | } |