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| version 1.49, 2001/11/05 10:21:28 | version 1.57, 2001/12/13 15:13:57 |
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| Line 2 | Line 2 |
| Parser: sql driver manager implementation. | Parser: sql driver manager implementation. |
| Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) | Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) |
| Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) | Author: Alexander Petrosyan <paf@design.ru> (http://paf.design.ru) |
| $Id$ | $Id$ |
| */ | */ |
| Line 88 static void expire_connections(const Has | Line 88 static void expire_connections(const Has |
| // SQL_Driver_manager | // SQL_Driver_manager |
| SQL_Driver_manager::SQL_Driver_manager(Pool& apool) : Pooled(apool), | SQL_Driver_manager::SQL_Driver_manager(Pool& apool) : Cache_manager(apool), |
| driver_cache(apool), | driver_cache(apool), |
| connection_cache(apool), | connection_cache(apool), |
| prev_expiration_pass_time(0) { | prev_expiration_pass_time(0) { |
| status_providers->put(*NEW String(pool(), "sql"), this); | |
| } | } |
| SQL_Driver_manager::~SQL_Driver_manager() { | SQL_Driver_manager::~SQL_Driver_manager() { |
| connection_cache.for_each(expire_connections, | connection_cache.for_each(expire_connections, |
| reinterpret_cast<void *>((time_t)0/*=in past=expire all*/)); | reinterpret_cast<void *>(time(0)+1/*=in future=expire all*/)); |
| } | } |
| /// @param request_url protocol://[driver-dependent] | /// @param request_url protocol://[driver-dependent] |
| Line 155 SQL_Connection& SQL_Driver_manager::get_ | Line 153 SQL_Connection& SQL_Driver_manager::get_ |
| global_protocol_cstr); | global_protocol_cstr); |
| SQL_Driver *driver; | SQL_Driver *driver; |
| const String *dlopen_file_spec=0; | |
| // first trying to get cached driver | // first trying to get cached driver |
| if(!(driver=get_driver_from_cache(global_protocol))) { | if(!(driver=get_driver_from_cache(global_protocol))) { |
| // no cached | // no cached |
| const String *library=0; | const String *library=0; |
| const String *dlopen_file_spec=0; | |
| if(protocol2driver_and_client->locate(0, global_protocol)) { | if(protocol2driver_and_client->locate(0, global_protocol)) { |
| if(!(library=protocol2driver_and_client->item(1)) || library->size()==0) | if(!(library=protocol2driver_and_client->item(1)) || library->size()==0) |
| throw Exception(0, 0, | throw Exception(0, 0, |
| Line 204 SQL_Connection& SQL_Driver_manager::get_ | Line 202 SQL_Connection& SQL_Driver_manager::get_ |
| driver_api_version, SQL_DRIVER_API_VERSION); | 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 |
| bool specified_dlopen_file_spec=dlopen_file_spec && dlopen_file_spec->size(); | char *dlopen_file_spec_cstr= |
| const char *dlopen_file_spec_cstr= | dlopen_file_spec && dlopen_file_spec->size()? |
| specified_dlopen_file_spec? | dlopen_file_spec->cstr(String::UL_AS_IS):0; |
| dlopen_file_spec->cstr(String::UL_FILE_SPEC):0; | |
| if(const char *error=driver->initialize( | if(const char *error=driver->initialize( |
| dlopen_file_spec_cstr)) | dlopen_file_spec_cstr)) |
| throw Exception(0, 0, | throw Exception(0, 0, |
| library, | library, |
| "driver failed to initialize client library '%s', %s", | "driver failed to initialize client library '%s', %s", |
| specified_dlopen_file_spec?dlopen_file_spec_cstr:"unspecifed", | dlopen_file_spec_cstr?dlopen_file_spec_cstr:"unspecifed", |
| error); | error); |
| // cache it | // cache it |
| Line 263 void SQL_Driver_manager::put_driver_to_c | Line 260 void SQL_Driver_manager::put_driver_to_c |
| SQL_Connection *SQL_Driver_manager::get_connection_from_cache(const String& url) { | SQL_Connection *SQL_Driver_manager::get_connection_from_cache(const String& url) { |
| SYNCHRONIZED; | SYNCHRONIZED; |
| maybe_expire_connection_cache(); | |
| if(Stack *connections=static_cast<Stack *>(connection_cache.get(url))) | if(Stack *connections=static_cast<Stack *>(connection_cache.get(url))) |
| while(connections->top_index()>=0) { // there are cached connections to that 'url' | while(connections->top_index()>=0) { // there are cached connections to that 'url' |
| SQL_Connection *result=static_cast<SQL_Connection *>(connections->pop()); | SQL_Connection *result=static_cast<SQL_Connection *>(connections->pop()); |
| Line 287 void SQL_Driver_manager::put_connection_ | Line 282 void SQL_Driver_manager::put_connection_ |
| connections->push(&connection); | connections->push(&connection); |
| } | } |
| void SQL_Driver_manager::maybe_expire_connection_cache() { | void SQL_Driver_manager::maybe_expire_cache() { |
| time_t now=time(0); | time_t now=time(0); |
| if(prev_expiration_pass_time<now-CHECK_EXPIRED_CONNECTIONS_SECONDS) { | if(prev_expiration_pass_time<now-CHECK_EXPIRED_CONNECTIONS_SECONDS) { |
| Line 304 static void add_connection_to_status_cac | Line 299 static void add_connection_to_status_cac |
| if(connection.connected()) { | if(connection.connected()) { |
| Pool& pool=table.pool(); | Pool& pool=table.pool(); |
| Array& row=*new(pool) Array(pool, 3); | Array& row=*new(pool) Array(pool); |
| // url | |
| row+=&url_without_login(pool, connection.get_url()); | row+=&url_without_login(pool, connection.get_url()); |
| // time | |
| time_t time_stamp=connection.get_time_stamp(); | time_t time_stamp=connection.get_time_stamp(); |
| const char *unsafe_time_cstr=ctime(&time_stamp); | const char *unsafe_time_cstr=ctime(&time_stamp); |
| int time_buf_size=strlen(unsafe_time_cstr); | int time_buf_size=strlen(unsafe_time_cstr); |
| Line 323 static void add_connections_to_status_ca | Line 320 static void add_connections_to_status_ca |
| for(int countdown=stack.top_index(); countdown-->=0; ) | for(int countdown=stack.top_index(); countdown-->=0; ) |
| add_connection_to_status_cache_table(iter.next(), info); | add_connection_to_status_cache_table(iter.next(), info); |
| } | } |
| Value& SQL_Driver_manager::get_status(Pool& pool, const String *source) { | Value& SQL_Driver_manager::get_status(Pool& pool, const String *source) { |
| VHash& result=*new(pool) VHash(pool); | VHash& result=*new(pool) VHash(pool); |
| // cache | // cache |
| { | { |
| Array& columns=*new(pool) Array(pool, 3); | Array& columns=*new(pool) Array(pool); |
| columns+=new(pool) String(pool, "url"); | columns+=new(pool) String(pool, "url"); |
| columns+=new(pool) String(pool, "time"); | columns+=new(pool) String(pool, "time"); |
| Table& table=*new(pool) Table(pool, 0, &columns, connection_cache.size()); | Table& table=*new(pool) Table(pool, 0, &columns, connection_cache.size()); |
| Line 341 Value& SQL_Driver_manager::get_status(Po | Line 336 Value& SQL_Driver_manager::get_status(Po |
| } | } |
| return result; | return result; |
| } | |
| } |