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/*==LICENSE==*
CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
You can contact Cyan Worlds, Inc. by email legal@cyan.com
or by snail mail at:
Cyan Worlds, Inc.
14617 N Newport Hwy
Mead, WA 99021
*==LICENSE==*/
/*****************************************************************************
*
* $/Plasma20/Sources/Plasma/NucleusLib/pnOraLib/pnOraLib.cpp
*
***/
#include "Pch.h"
#pragma hdrstop
//#define ORACONN_TRACKING
//#define ORASTMT_TRACKING
#ifdef ORACONN_TRACKING
#pragma message("pnOraLib: Compiling with ORACONN_TRACKING")
#endif
#ifdef ORASTMT_TRACKING
#pragma message("pnOraLib: Compiling with ORASTMT_TRACKING")
#endif
/*****************************************************************************
*
* Private
*
***/
struct OraInitData {
unsigned OraStmtCacheSize;
wchar OraUsername[128];
wchar OraPassword[128];
wchar OraConnectString[256];
OraInitData(
unsigned stmtCacheSize,
const wchar username[],
const wchar password[],
const wchar connectString[]
);
};
struct OraEnv {
occi::Environment * occiEnv;
occi::StatelessConnectionPool * occiPool;
};
struct OraConnPool {
bool needReinit;
long perf[kOcciNumPerf];
CCritSect critsect;
OraEnv oraEnv;
OraInitData * data;
void Initialize_CS ();
void Shutdown_CS ();
void ReInitialize_CS ();
void Initialize (
const wchar username[],
const wchar password[],
const wchar connectString[],
unsigned stmtCacheSize
);
void Shutdown ();
OraConn * GetConn (const wchar tag[]);
void FreeConn (OraConn *& conn);
long GetPerf (long index);
};
/*****************************************************************************
*
* Private Data
*
***/
static const unsigned kDefaultConnTimeoutSecs = 60 * 30; // half-hour
static const unsigned kDefaultConnsPerEnv = 10;
enum {
kPerfOraConnCount,
kPerfOraStmtCount,
kNumPerf
};
static OraConnPool s_connPool;
static long s_perf[kNumPerf];
/*****************************************************************************
*
* Local functions
*
***/
/*****************************************************************************
*
* OraInitData
*
***/
//============================================================================
OraInitData::OraInitData (
unsigned stmtCacheSize,
const wchar username[],
const wchar password[],
const wchar connectString[]
) {
OraStmtCacheSize = stmtCacheSize;
StrCopy(OraUsername, username, arrsize(OraUsername));
StrCopy(OraPassword, password, arrsize(OraPassword));
StrCopy(OraConnectString, connectString, arrsize(OraConnectString));
}
/*****************************************************************************
*
* OraConnPool
*
***/
//============================================================================
void OraConnPool::ReInitialize_CS () {
Shutdown_CS();
Initialize_CS();
needReinit = false;
}
//============================================================================
void OraConnPool::Initialize_CS () {
ASSERT(data);
try {
const unsigned threads = AsyncThreadTaskGetThreadCount();
const unsigned maxConns = threads;
const unsigned minConns = 0;
const unsigned incConns = max(1, maxConns - 1);
// Some memory allocated by createEnvironment is leaked,
// so we disable memory tracking while calling it.
MemPushDisableTracking();
oraEnv.occiEnv = occi::Environment::createEnvironment(
"OCCIUTF16",
"OCCIUTF16",
occi::Environment::THREADED_MUTEXED,
nil
);
MemPopDisableTracking();
// Create the connection pool
oraEnv.occiPool = oraEnv.occiEnv->createStatelessConnectionPool(
data->OraUsername,
data->OraPassword,
data->OraConnectString,
maxConns,
minConns,
incConns,
occi::StatelessConnectionPool::HOMOGENEOUS
);
// Turn on statement caching
oraEnv.occiPool->setStmtCacheSize(data->OraStmtCacheSize);
oraEnv.occiPool->setTimeOut(kDefaultConnTimeoutSecs);
// If no connections are available, block until one becomes available
oraEnv.occiPool->setBusyOption(occi::StatelessConnectionPool::WAIT);
}
catch (exception & e) {
OraLogError(L"OraConnPool::Initialize", e);
ErrorFatal(__LINE__, __FILE__, "Failed to initialize occi connection pool");
}
}
//============================================================================
void OraConnPool::Shutdown_CS () {
if (oraEnv.occiEnv) {
try {
// If we aren't connected to oracle, then closing the connection
// pool causes oracle to make a pure virtual function call when
// closing the environment.
if (!needReinit)
oraEnv.occiEnv->terminateStatelessConnectionPool(oraEnv.occiPool, occi::StatelessConnectionPool::SPD_FORCE);
occi::Environment::terminateEnvironment(oraEnv.occiEnv);
}
catch (exception & e) {
OraLogError(L"OraConnPool::Shutdown", e);
}
oraEnv.occiEnv = nil;
oraEnv.occiPool = nil;
}
}
//============================================================================
void OraConnPool::Initialize (
const wchar username[],
const wchar password[],
const wchar connectString[],
unsigned stmtCacheSize
) {
data = NEW(OraInitData)(stmtCacheSize, username, password, connectString);
critsect.Enter();
{
Initialize_CS();
}
critsect.Leave();
}
//============================================================================
void OraConnPool::Shutdown () {
critsect.Enter();
{
Shutdown_CS();
}
critsect.Leave();
DEL(data);
}
//============================================================================
OraConn * OraConnPool::GetConn (const wchar tag[]) {
OraConn * oraConn = NEWZERO(OraConn);
if (tag)
StrCopy(oraConn->tag, tag, arrsize(oraConn->tag));
critsect.Enter();
for (;;) try {
if (needReinit) {
if (GetPerf(kOcciPerfBusyConns))
// Wait for all connections to be freed by the app
// before environment reinitialization.
break;
ReInitialize_CS();
}
if (!oraEnv.occiEnv)
break;
if (nil != (oraConn->occiConn = oraEnv.occiPool->getConnection()))
oraConn->oraEnv = &oraEnv;
break;
}
catch (exception & e) {
OraLogError(L"OraConnPool::GetConn", e);
oraConn = nil;
break;
}
critsect.Leave();
for (;;) {
if (!oraConn || !oraConn->occiConn) {
DEL(oraConn);
oraConn = nil;
LogMsg(kLogError, L"OraConnPool::GetConn: Failed to aquire a database connection");
break;
}
const unsigned connCount = AtomicAdd(&s_perf[kPerfOraConnCount], 1) + 1;
ref(connCount);
#ifdef ORACONN_TRACKING
LogMsg(kLogPerf, L"OraGetConn: %u, %p, %s", connCount, oraConn, oraConn->tag);
#endif
break;
}
return oraConn;
}
//============================================================================
void OraConnPool::FreeConn (OraConn *& oraConn) {
if (oraConn) try {
occi::Connection * occiConn = oraConn->occiConn;
occi::StatelessConnectionPool * occiPool = oraConn->oraEnv->occiPool;
const unsigned connCount = AtomicAdd(&s_perf[kPerfOraConnCount], -1) - 1;
ref(connCount);
#ifdef ORACONN_TRACKING
LogMsg(kLogPerf, L"OraFreeConn: %u, %p, %s", connCount, oraConn, oraConn->tag);
#endif
DEL(oraConn);
try {
occiConn->commit();
}
catch (exception & e) {
OraLogError(L"OraConnPool::FreeConn [commit]", e);
needReinit = true;
}
occiPool->releaseConnection(occiConn);
}
catch (exception & e) {
OraLogError(L"OraConnPool::FreeConn [release]", e);
}
oraConn = nil;
}
//============================================================================
long OraConnPool::GetPerf (long index) {
if (!oraEnv.occiEnv)
return 0;
if (!oraEnv.occiPool)
return 0;
switch (index) {
case kOcciPerfOpenConns: return oraEnv.occiPool->getOpenConnections();
case kOcciPerfBusyConns: return oraEnv.occiPool->getBusyConnections();
DEFAULT_FATAL(index);
}
}
/*****************************************************************************
*
* Exports
*
***/
//============================================================================
void OraLogError (const wchar sql[], const exception & e) {
wchar buffer[1024];
const char * tmp = e.what();
// Some exceptions we catch are actually unicode strings in a char buffer, but others aren't.
if (tmp[0] && !tmp[1]) {
const wchar * wtmp = (const wchar *)tmp;
StrCopy(buffer, wtmp, arrsize(buffer));
}
else {
StrToUnicode(buffer, tmp, arrsize(buffer));
}
LogMsg(kLogError, L"%s, %s", sql, buffer);
}
//============================================================================
void OraGetShaDigest (
occi::Statement * oraStmt,
unsigned index,
ShaDigest * digest
) {
occi::Bytes bytes = oraStmt->getBytes(index);
const unsigned length = bytes.length();
ASSERT(length == msizeof(ShaDigest, data));
bytes.getBytes((byte *)digest->data, length);
}
//============================================================================
void OraSetShaDigest (
occi::Statement * oraStmt,
unsigned index,
const ShaDigest & digest
) {
occi::Bytes bytes((byte *)&digest, sizeof(digest));
oraStmt->setBytes(index, bytes);
}
//============================================================================
void OraBindString (
occi::Statement * oraStmt,
unsigned index,
wchar * buffer,
unsigned chars,
ub2 * length,
sb2 * indicator
) {
oraStmt->setDataBuffer(
index,
buffer,
occi::OCCI_SQLT_STR,
chars * sizeof(buffer[0]),
length,
indicator
);
}
//============================================================================
void OraBindString (
occi::ResultSet * rs,
unsigned index,
wchar * buffer,
unsigned chars,
ub2 * length,
sb2 * indicator
) {
rs->setDataBuffer(
index,
buffer,
occi::OCCI_SQLT_STR,
chars * sizeof(buffer[0]),
length,
indicator
);
}
//============================================================================
void OraGetUuid (
occi::Statement * oraStmt,
unsigned index,
Uuid * uuid
) {
occi::Bytes bytes = oraStmt->getBytes(index);
if (const unsigned length = bytes.length()) {
ASSERT(length == msizeof(Uuid, data));
byte * buf = ALLOCA(byte, length);
bytes.getBytes(buf, length);
GuidFromHex(buf, length, uuid);
}
else {
GuidClear(uuid);
}
}
//============================================================================
void OraSetUuid (
occi::Statement * oraStmt,
unsigned index,
const Uuid & uuid
) {
occi::Bytes bytes((byte *)&uuid, sizeof(uuid));
oraStmt->setBytes(index, bytes);
}
//============================================================================
OraConn * OraGetConn (const wchar tag[]) {
// grabs a cached connection if available, otherwise creates a new one on-the-fly
return s_connPool.GetConn(tag);
}
//============================================================================
void OraFreeConn (OraConn *& oraConn) {
s_connPool.FreeConn(oraConn);
}
//============================================================================
occi::Statement * OraGetStmt (
OraConn * oraConn,
const wchar sql[]
) {
occi::Statement * oraStmt = nil;
try {
// grabs a matching cached statement if available, otherwise creates a new one
oraStmt = oraConn->occiConn->createStatement(sql);
// auto-commit causes an exception to be thrown when writing blobs: "ORA-01002: fetch out of sequence"
oraStmt->setAutoCommit(false);
const unsigned stmtCount = AtomicAdd(&s_perf[kPerfOraStmtCount], 1) + 1;
ref(stmtCount);
#ifdef ORASTMT_TRACKING
LogMsg(kLogPerf, L"OraGetStmt: %u, %p, %s", stmtCount, oraStmt, sql);
#endif
}
catch (exception & e) {
OraLogError(L"OraGetStmt", e);
}
return oraStmt;
}
//============================================================================
void OraFreeStmt (occi::Statement *& oraStmt) {
if (oraStmt) {
try {
// caches the statement
oraStmt->getConnection()->terminateStatement(oraStmt);
const unsigned stmtCount = AtomicAdd(&s_perf[kPerfOraStmtCount], -1) - 1;
ref(stmtCount);
#ifdef ORASTMT_TRACKING
LogMsg(kLogPerf, L"OraFreeStmt: %u, %p", stmtCount, oraStmt);
#endif
}
catch (exception & e) {
OraLogError(L"OraFreeStmt", e);
}
oraStmt = nil;
}
}
//============================================================================
void OraInitialize (
const wchar username[],
const wchar password[],
const wchar connectString[],
unsigned stmtCacheSize
) {
// Connect to the database
s_connPool.Initialize(
username,
password,
connectString,
stmtCacheSize
);
}
//============================================================================
void OraShutdown () {
}
//============================================================================
void OraDestroy () {
s_connPool.Shutdown();
}
//============================================================================
long OraLibGetOcciPerf (unsigned index) {
return s_connPool.GetPerf(index);
}