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| version 1.18, 2001/10/27 10:14:45 | version 1.36, 2002/02/08 07:27:47 |
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| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: sql driver connection implementation. | Parser: sql driver connection implementation. |
| Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) | Copyright (c) 2001, 2002 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) |
| $Id$ | $Id$ |
| developed with LIBDB 2.7.4 | |
| */ | */ |
| #include "pa_config_includes.h" | #include "pa_config_includes.h" |
| #ifdef HAVE_LIBDB | #ifdef DB2 |
| #include "pa_db_connection.h" | #include "pa_db_connection.h" |
| #include "pa_db_table.h" | #include "pa_db_table.h" |
| Line 16 | Line 18 |
| #include "pa_threads.h" | #include "pa_threads.h" |
| #include "pa_stack.h" | #include "pa_stack.h" |
| #include "pa_common.h" | #include "pa_common.h" |
| #include "pa_vtable.h" | |
| // defines | // defines |
| #define DB_ERROR_PREFIX "db_err: " | |
| #define DB_EXCEPTION_NO_LOG_MESSAGE1 DB_ERROR_PREFIX"Ignoring log file" | |
| #define DB_EXCEPTION_NO_LOG_MESSAGE2 DB_ERROR_PREFIX"log_get: unable to find checkpoint record" | |
| // consts | // consts |
| /// @test increase | /// @test increase |
| Line 43 static void db_paniccall(DB_ENV *dbenv, | Line 42 static void db_paniccall(DB_ENV *dbenv, |
| static void db_errcall(const char *, char *buffer) { | static void db_errcall(const char *, char *buffer) { |
| throw Exception(0, 0, | throw Exception(0, 0, |
| 0, | 0, |
| DB_ERROR_PREFIX "%s", | "db_err: %s", |
| buffer); | buffer); |
| } | } |
| static void expire_table(const Hash::Key& key, Hash::Val *& value, void *info) { | static void expire_table(const Hash::Key& key, Hash::Val *& value, void *info) { |
| DB_Connection& table=*static_cast<DB_Connection *>(value); | DB_Table *table=static_cast<DB_Table *>(value); |
| time_t older_dies=reinterpret_cast<time_t>(info); | time_t older_dies=reinterpret_cast<time_t>(info); |
| if(table.expired(older_dies)) { | if(table->expired(older_dies)) { |
| table.~DB_Connection(); value=0; | table->~DB_Table(); value=0; |
| } | } |
| } | } |
| Line 60 static void expire_table(const Hash::Key | Line 59 static void expire_table(const Hash::Key |
| DB_Connection::DB_Connection(Pool& apool, const String& adb_home) : Pooled(apool), | DB_Connection::DB_Connection(Pool& apool, const String& adb_home) : Pooled(apool), |
| time_used(0), | time_used(0), |
| fdb_home(adb_home), | fdb_home(adb_home), used(0), |
| table_cache(apool), | table_cache(apool), |
| prev_expiration_pass_time(0) { | prev_expiration_pass_time(0) { |
| //_asm int 3; | //_asm int 3; |
| char DB_DATA_DIR__VALUE[MAX_STRING]; | char DB_DATA_DIR__VALUE[MAX_STRING]; |
| char DB_LOG_DIR__VALUE[MAX_STRING]; | |
| char DB_TMP_DIR__VALUE[MAX_STRING]; | char DB_TMP_DIR__VALUE[MAX_STRING]; |
| const char *db_home_cstr=fdb_home.cstr(String::UL_FILE_SPEC); | const char *db_home_cstr=fdb_home.cstr(String::UL_FILE_SPEC); |
| snprintf(DB_DATA_DIR__VALUE, MAX_STRING, "DB_DATA_DIR %s", db_home_cstr); | snprintf(DB_DATA_DIR__VALUE, MAX_STRING, "DB_DATA_DIR %s", db_home_cstr); |
| snprintf(DB_LOG_DIR__VALUE, MAX_STRING, "DB_LOG_DIR %s", db_home_cstr); | |
| snprintf(DB_TMP_DIR__VALUE, MAX_STRING, "DB_TMP_DIR %s", db_home_cstr); | snprintf(DB_TMP_DIR__VALUE, MAX_STRING, "DB_TMP_DIR %s", db_home_cstr); |
| char *db_config[] = { | char *db_config[] = { |
| DB_DATA_DIR__VALUE, | DB_DATA_DIR__VALUE, |
| DB_LOG_DIR__VALUE, | |
| DB_TMP_DIR__VALUE, | DB_TMP_DIR__VALUE, |
| 0 | 0 |
| }; | }; |
| u_int32_t flags= | u_int32_t flags= |
| DB_THREAD | (parser_multithreaded?DB_THREAD:0) |
| | DB_CREATE | | DB_CREATE |
| | DB_INIT_MPOOL | DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_TXN; | | DB_INIT_MPOOL; |
| // trying to open with SOFT RECOVER option set | // prepare dbenv structure |
| memset(&dbenv, 0, sizeof(dbenv)); | memset(&dbenv, 0, sizeof(dbenv)); |
| // error handlers | // error handlers |
| #if DB_VERSION_MINOR >= 7 | |
| dbenv.db_paniccall=db_paniccall; | dbenv.db_paniccall=db_paniccall; |
| #endif | |
| dbenv.db_errcall=db_errcall; | dbenv.db_errcall=db_errcall; |
| // lockdetector flags | |
| dbenv.lk_detect=DB_LOCK_RANDOM; | |
| // init | // init |
| check("db_appinit", &fdb_home, db_appinit( | check("db_appinit", &fdb_home, db_appinit( |
| db_home_cstr, | db_home_cstr, |
| Line 105 DB_Connection::DB_Connection(Pool& apool | Line 106 DB_Connection::DB_Connection(Pool& apool |
| DB_Connection::~DB_Connection() { | DB_Connection::~DB_Connection() { |
| // close tables | // close tables |
| table_cache.for_each(expire_table, | table_cache.for_each(expire_table, |
| reinterpret_cast<void *>(0/* =in the past = expire[close] all*/)); | reinterpret_cast<void *>(time(0)+1/* =future= expire[close] all*/)); |
| // destroy connection data | // destroy connection data |
| check("db_appexit", &fdb_home, db_appexit(&dbenv)); | check("db_appexit", &fdb_home, db_appexit(&dbenv)); |
| Line 119 void DB_Connection::check(const char *op | Line 120 void DB_Connection::check(const char *op |
| break; | break; |
| default: | default: |
| throw Exception(0, 0, | if(error<0) |
| source, | throw Exception(0, 0, |
| "db %s error: %s (%d)", | source, |
| operation, strerror(error), error); | "db %s error: %d", |
| operation, error); | |
| else | |
| throw Exception(0, 0, | |
| source, | |
| "db %s error: %s (%d)", | |
| operation, strerror(error), error); | |
| } | } |
| } | } |
| DB_Table_ptr DB_Connection::get_table_ptr(const String& request_file_name, const String *source) { | DB_Table_ptr DB_Connection::get_table_ptr(const String& request_file_name, const String *source) { |
| // checkpoint | |
| check("checkpoint", source, | |
| txn_checkpoint(dbenv.tx_info, 0/*kbyte*/, DB_CHECKPOINT_MINUTES/*min*/)); | |
| // first trying to get cached table | // first trying to get cached table |
| DB_Table *result=get_table_from_cache(request_file_name); | DB_Table *result=get_table_from_cache(request_file_name); |
| if(!result) { // no cached table | if(!result) { // no cached table |
| // make global_file_name C-string on global pool | // make global_file_name C-string on global pool |
| const char *request_file_name_cstr=request_file_name.cstr(String::UL_AS_IS); | const char *request_file_name_cstr=request_file_name.cstr(); |
| char *global_file_name_cstr=(char *)malloc(strlen(request_file_name_cstr)+1); | char *global_file_name_cstr=(char *)malloc(strlen(request_file_name_cstr)+1); |
| strcpy(global_file_name_cstr, request_file_name_cstr); | strcpy(global_file_name_cstr, request_file_name_cstr); |
| // make global_file_name string on global pool | // make global_file_name string on global pool |
| Line 180 void DB_Connection::maybe_expire_table_c | Line 183 void DB_Connection::maybe_expire_table_c |
| } | } |
| } | } |
| static void add_table_to_status_table(const Hash::Key& key, Hash::Val *& value, void *info) { | |
| DB_Table *db_table=static_cast<DB_Table *>(value); | |
| Table& status_table=*static_cast<Table *>(info); | |
| Pool& pool=status_table.pool(); | |
| Array& row=*new(pool) Array(pool); | |
| // name | |
| row+=&db_table->file_name(); | |
| // time | |
| time_t time_stamp=db_table->get_time_used(); | |
| const char *unsafe_time_cstr=ctime(&time_stamp); | |
| int time_buf_size=strlen(unsafe_time_cstr); | |
| char *safe_time_buf=(char *)pool.malloc(time_buf_size); | |
| memcpy(safe_time_buf, unsafe_time_cstr, time_buf_size); | |
| row+=new(pool) String(pool, safe_time_buf, time_buf_size); | |
| // users | |
| char *users_buf=(char *)pool.malloc(MAX_NUMBER); | |
| row+=new(pool) String(pool, | |
| users_buf, snprintf(users_buf, MAX_NUMBER, "%d", db_table->get_users_count())); | |
| status_table+=&row; | |
| } | |
| Value& DB_Connection::get_status(Pool& pool, const String *source) { | |
| Array& columns=*new(pool) Array(pool); | |
| columns+=new(pool) String(pool, "name"); | |
| columns+=new(pool) String(pool, "time"); | |
| columns+=new(pool) String(pool, "users"); | |
| Table& table=*new(pool) Table(pool, 0, &columns, table_cache.size()); | |
| table_cache.for_each(add_table_to_status_table, &table); | |
| return *new(pool) VTable(pool, &table); | |
| } | |
| #endif | #endif |